Power Generation System
20200095985 ยท 2020-03-26
Inventors
Cpc classification
F03B17/00
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Y02E10/30
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
F04F5/10
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F03G7/04
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Y02E10/20
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
International classification
Abstract
The power plant disclosed is an engine that derives its usefulness in the pursuit of energy generation by utilizing hydrostatic pressure differentials found or created in various liquids, gases or solutions, such as but not limited to water and air. It is generally provided as a configuration designed to create a pressure differential, and to use the pressure differential to increase the effective head seen via a penstock and turbine system. Pump systems that are employed include venturi systems, jet pump systems and other comparable mixed-pressure vacuum pumps. Multiple power generating systems are interconnected to provide continuous and constant power generation through a penstock and turbine system.
Claims
1. (canceled)
2. A power generation system operating on a working fluid, comprising: an inlet receiving a first portion of the working fluid from a high head; a power generation component comprising: a penstock inlet receiving a second portion of the working fluid from an intermediate head; and a turbine generator; a vacuum pump system fluidly connected to the inlet and the power generation component to receive a combined working fluid, wherein the combined working fluid comprises a combination of the first portion of the working fluid and the second portion of the working fluid; and a connecting pipe fluidly connected to receive the combined working fluid from the vacuum pump system and transmit the combined working fluid to a point of discharge at a low head.
3. The power generation system of claim 2, wherein the intermediate head is less than or equal to the high head.
4. The power generation system of claim 3, wherein the intermediate head is greater than or equal to the low head.
5. The power generation system of claim 2, wherein the intermediate head is equal to the high head and the high head is greater than the low head.
6. The power generation system of claim 2, wherein a ratio of the first portion of the working fluid over the second portion of the working fluid is greater than 1.
7. The power generation system of claim 2, wherein the vacuum pump system is a venturi system.
8. The power generation system of claim 2, wherein: the vacuum pump system is a venturi system comprising: a convergent inlet cone fluidly connected to the inlet; a restriction fluidly connected to the convergent inlet cone; a low-pressure inlet fluidly connected to the power generation component and the restriction; and a divergent outlet cone fluidly connected to the restriction, wherein a combined working fluid is received comprising a combination of the first portion of the working fluid and the second portion of the working fluid, and wherein the connecting pipe is fluidly connected to receive the combined working fluid from the divergent outlet cone and transmit the combined working fluid to a point of discharge at a low head.
9. The power generation system of claim 2, wherein the vacuum pump system is an ejector system.
10. The power generation system of claim 2, wherein: the vacuum pump system is an ejector system comprising: a diffuser inlet fluidly connected to the inlet; a nozzle fluidly connected to the diffuser inlet; a low-pressure inlet fluidly connected to the power generation component and the nozzle; and a suction chamber fluidly connected to the nozzle and the low-pressure inlet, wherein a combined working fluid is received comprising a combination of the first portion of the working fluid and the second portion of the working fluid, and wherein the connecting pipe is fluidly connected to receive the combined working fluid from the suction chamber and transmit the combined working fluid to a point of discharge at a low head.
11. A power generation system operating on a working fluid, comprising: an inlet receiving a first portion of the working fluid from a high head; a power generation component comprising a power generator receiving a second portion of the working fluid from an intermediate head; a vacuum pump system fluidly connected to the inlet and the power generation component to receive a combined working fluid, wherein the combined working fluid comprises a combination of the first portion of the working fluid and the second portion of the working fluid; and a connecting pipe fluidly connected to receive the combined working fluid from the vacuum pump system and transmit the combined working fluid to a point of discharge at a low head.
12. The power generation system of claim 11, wherein the intermediate head is less than or equal to the high head.
13. The power generation system of claim 12, wherein the intermediate head is greater than or equal to the low head.
14. The power generation system of claim 11, wherein the intermediate head is equal to the high head and the high head is greater than the low head.
15. The power generation system of claim 11, wherein a ratio of the first portion of the working fluid over the second portion of the working fluid is greater than 1.
16. The power generation system of claim 11, wherein the vacuum pump system is a venturi system.
17. The power generation system of claim 11, wherein: the vacuum pump system is a venturi system comprising: a convergent inlet cone fluidly connected to the inlet; a restriction fluidly connected to the convergent inlet cone; a low-pressure inlet fluidly connected to the power generation component and the restriction; and a divergent outlet cone fluidly connected to the restriction, wherein a combined working fluid is received comprising a combination of the first portion of the working fluid and the second portion of the working fluid, and wherein the connecting pipe is fluidly connected to receive the combined working fluid from the divergent outlet cone and transmit the combined working fluid to a point of discharge at a low head.
18. The power generation system of claim 11, wherein the vacuum pump system is an ejector system.
19. The power generation system of claim 11, wherein: the vacuum pump system is an ejector system comprising: a diffuser inlet fluidly connected to the inlet; a nozzle fluidly connected to the diffuser inlet; a low-pressure inlet fluidly connected to the power generation component and the nozzle; and a suction chamber fluidly connected to the nozzle and the low-pressure inlet, wherein a combined working fluid is received comprising a combination of the first portion of the working fluid and the second portion of the working fluid, and wherein the connecting pipe is fluidly connected to receive the combined working fluid from the suction chamber and transmit the combined working fluid to a point of discharge at a low head.
20. The power generation system of claim 11, wherein the combination of the first portion and the second portion of the working fluid increases an effective head experienced across the power generation component.
Description
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0030] Novel features and advantages of the present invention, in addition to those mentioned above, will become apparent to those skilled in the art from a reading of the following detailed description in conjunction with the accompanying drawings wherein identical reference characters refer to identical parts and in which:
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DETAILED DESCRIPTION OF THE INVENTION
[0082] An exemplary embodiment of the present invention is shown in connection with
[0083] In
[0084] As illustrated in
[0085] A method of operation for ejector systems that have water entering through valve (V1A) are illustrated as follows: valve (VT) is opened allowing water from the high head (WL) to enter the penstock (PS). Valve (V5) is opened allowing water in (PS) to pass through the turbine/generator system (T/G) to generate power. Air vent (AV/T) is opened. Valve (V1A) is opened. Valves (VT), (V5), (V1A) and air vent (AV/T) preferably remain open during normal plant operation. However, any of those can be opened and closed as necessary for desired operation.
[0086] Water from the high head of water (WL) enters connecting pipe (CP-1A) through valve (V1A). It travels down to the ejector system (EJ). The nozzle effect from the ejector system (EJ) takes effect. Since the water in (TWC) is vented to atmosphere by (AV/T) it is low pressure water. Since the column of water in (CP-1A) entering (EJ) is higher than the column of water in the (TWC), the water entering the (EJ) system from (CP-1A) is at a higher pressure than the water in the (TWC). Thus, the entrained fluid in the (TWC) commingles with the water in (CP-1A). Connecting pipe (CP-1A) now carries water from the high head of water (WL) and water from the (TWC) up to and out of the invented system's point of discharge (POD) into the low head of water (WLL).
[0087] The point of discharge (POD) can be above, below or at the low head of water (WLL). Its exact location will need to be calculated and tested by an expert in the appropriate art. If required, the water pressure in the (TWC) can be controlled by opening and closing (AV/T). Closing (AV/T) builds up back pressure causing the water in (TWC) to be raised to a higher pressure. Opening (AV/T) can lower the water pressure in the (TWC) to atmospheric pressure.
[0088] A pump system (PTWC) may be optionally added to any (TWC) to evacuate water if necessary. Valve (VPTWC) may be opened when pump (PTWC) is in operation but closed when it is not pumping.
[0089]
[0090] Venturi vacuum pump systems that use water (or liquids generally) can be used to evacuate water from the invented system after that water was used to generate power. In this example, high pressure water is used to evacuate a lower pressure water. This is a very efficient method for evacuating water out of the invented system and provides for an increased effective head experienced by the penstock. This is especially useful, for example, in retrofitting low-head dams or reevaluating low-head dam project sites for new hydroelectric power plants.
[0091] A method of operation for venturi vacuum pump systems is illustrated as follows in connection with the exemplary embodiment shown in connection with
[0092] Water from the high head of water (WL) enters connecting pipe (CP-1A) through valve (V1A). It travels down to the venturi vacuum pump system (VS). Since the water in (TWC) is vented to atmosphere by (AV/T) it is low pressure water. Since the column of water in (CP-1A) entering (VS) is higher than the column of water in the (TWC), the water entering the (VS) system from (CP-1A) is at a higher pressure than the water in the (TWC). The venturi effect takes place, in which the low-pressure water in the turbine water chamber (TWC) passes through valve (VV) and commingles/mixes with the water from (CP-1A) via a connecting pipe (VCP). Connecting pipe (CP-1A) now carries water from the high head of water (WL) and water from the (TWC) up to and out of the invented system's point of discharge (POD) into the low head of water (WLL).
[0093] Note that the point of discharge (POD) can be above, below or at the low head of water. Its exact location should be calculated and tested by an expert in the appropriate art for a particular application. Furthermore, an optional pump system (PS-X) can be added at the point of discharge (POD) to help evacuate water from the invented system.
[0094] The exemplary embodiment shown in connection with
[0095] Note that dams are not required for the vacuum pump system embodiments if the head of water entering through valve (V1A) is sufficient to operate the system. Given the same head of water enters through valves (VT) and (V1A), that water can be evacuated into the same head of water. Additionally, whether or not a dam is used in vacuum pump systems a pumping system can be added at the point of discharge (POD) to help evacuate water from the invented system.
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[0097] When an air compressor (AC) is used to compress air entering valve (V1A) the method of operation for an ejector system (EJ) is the same as when water is entering through valve (V1A) with the following exceptions: (1) only compressed air enters through valve (V1A); (2) water from the turbine water chamber (TWC) mixes with air from (CP-1A) because of the nozzle effect; and (3) connecting pipe (CP-1A) carries water and air up to and out of the (POD). The same is true for any other comparable vacuum pump systems, wherein the specific vacuum pump system applied in a given application of the invention involves a vacuum pump effect, generally. Note also that in this example water does not enter connecting pipe (CP-1A) through valve (V1A). Only compressed air from air compressor (AC) enters through valve (V1A).
[0098] Since an air compressor is used in this exemplary embodiment to cause the venturi effect or the nozzle effect a dam is not strictly required, as will be evident upon the disclosure of further embodiments herein below. Water entering through valve (VT) to generate power (perform work, generally) can be discharged at the system's (POD) into the same head of water entering through valve (VT). A dam is used to increase the pressure differential between the matter entering through valve (V1A) and the water inside of the (TWC). A dam also allows a greater power generation.
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[0100] Q1 represents the flow of water passing through connecting pipe (CP-1A) after it passed through valve (V1A). Q2 signifies the flow of water that entered through valve (VT), passed through the turbine/generator system and was dropped into the turbine water chamber (TWC) after generating power. Flow (Q1+Q2) indicates the flow of water after the venturi effect in a venturi system, the nozzle effect in an ejector system, or other comparable vacuum pump systems. Flow (Q1+Q2) illustrates the mixing of matter/water between the water in the turbine water chamber (TWC) and the water that entered via valve (V1A).
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[0102] The exemplary embodiment shown in connection with
[0103] In operation, the exemplary embodiment shown in connection with
[0104] Water from water tower (WT) passes through valve (V1A) and enters connecting pipe (CP-1A). It travels down to venturi system (VS). Water from the evacuation chamber (EC) passes through valve (VT) and down the penstock (PS) to turbine/generator (T/G) where it generates power. Then that water passes through valve (V5) and drops into the turbine water chamber (TWC), which is vented to atmosphere by air vent system (AV/EC). (AV/EC) also vents evacuation chamber (EC) to atmosphere. Likewise, air vent (AV/T) vents the water tower (WT) to atmosphere. There can be an air space in the turbine water chamber (TWC) between valve (V5) and the water level in the (TWC). The water level in (TWC) is designated as (WLTWC). As water from (CP-1A) passes through venturi system (VS) the venturi effect takes place and water from the (TWC) passes through valve (VV) and connecting pipe (VCP) and mixes with the water from (CP-1A). Connecting pipe (VCP) is depicted in
[0105] In ejector technology systems (EJ): preferably, air vents (AV/EC) and (AV/T) are open during normal plant operations. Preferably, valves (VT), (V5) and (V1A) are open during normal system operations. Any of those vents and valves can be opened and closed as necessary. The high head of water in this scenario is (WL/WT) located in the water tower. The low head of water (WLL/EC) is located in the evacuation chamber (EC). Since the point of discharge (POD) is at or below (WLL/EC), (WLL/EC) becomes the low head of water.
[0106] Water from water tower (WT) passes through valve (V1A) and enters connecting pipe (CP-1A). It travels down to ejector system (EJ). Water from the evacuation chamber (EC) passes through valve (VT) and down the penstock (PS) to turbine/generator (T/G) where it generates power. Then that water passes through valve (V5) and drops into the turbine water chamber (TWC), which is vented to atmosphere by air vent system (AV/EC). (AV/EC) also vents evacuation chamber (EC) to atmosphere. Likewise, air vent (AV/T) vents the water tower (WT) to atmosphere. There is an air space in (TWC) between valve (V5) and the water level in the (TWC). The water level in (TWC) is designated as (WLTWC). As water from (CP-1A) passes through ejector system (EJ) the nozzle effect takes place and water from the (TWC) mixes with the water from (CP-1A). Since the column of water entering the ejector system (EJ) has a higher head of water than the water inside of (TWC), the water from (CP-1A) has a higher pressure. The combined flow of water exiting (EJ) travels up connecting pipe (CP-1A) and out of the point of discharge (POD) located in the evacuation chamber (EC). Pump system (PSEC) pumps water from (EC) back into the water tower (WT) preferably at the same rate as the water exiting the water tower (WT) through valve (V1A). Preferably, water from (EC) drops down (PS) at the same rate that water exits the (TWC) through the ejector system (EJ). Again, valve (VT) and/or valve (V5) control the flow of water down (PS) and valve (V1A) controls the flow of water entering connecting pipe (CP-1A).
[0107] Note that if necessary, a valve can be added to the ejector system (EJ) to control the flow of water between it and the turbine water chamber (TWC).
[0108] The embodiment shown in connection with
[0109] The embodiment shown in connection with
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[0111] This embodiment also illustrates that there can be more than one turbine water chamber supplying water to the vacuum pump system (VS). Although the (TWC) is vented to atmosphere by air vent (AV/T) both (TWCB) and (TWCA) are not vented to atmosphere in this scenario. As (TWCA) is being refilled with water from the penstock via valve (TVA), (TWCB) is supplying water to the venturi via valve (VVB). Valve (TVB) is closed when valve (VVB) is open and valve (VVA) is closed when valve (TVA) is opened. This shows how to operate this variation of the invented system with little if any intermittent power generation.
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[0113] The exemplary embodiment shown in connection with
[0114] This example further shows that the penstock, the connecting pipes supplying water to the ejector vacuum pump systems (EJ) and the point of discharge can have the same head of water. Preferably, the water being supplied to valves (V1A and V1B) is moving (like but not limited to water from a river, stream or canal system). If desired or necessary, then a dam system or water tower system can be added to increase the head of water supplying water to (V1A) and (VIB). This would increase the pressure differential between the water entering through intake valves (V1A and V1B) and the points of discharge (POD-A and POD-B). The examples in
[0115] The exemplary embodiment shown in connection with
[0116] Air compressor (AC) pumps air into the hammer bell (HB). After the desired amount of air is pumped into (HB) valve (VAVHB) is closed and the air compressor/air pump (AC/AP) is shut off. Valve (TVA) is opened to fill evacuation chamber (TWCA) with water from (TWC). Then it is closed. Preferably Valves (VT), (V1) and (V5) are open during normal plant operation. Valve (V5) is shown in
[0117] High pressure water from water level (WL) enters connecting pipe (CHP) and travels through that connecting pipe to valve (HV). Valves (HV) and (HVB) can be pressure operated, mechanically operated using springs and/or weights or electronically opened and closed. This scenario has them being operated using electronics. Meters can determine when those valves open and close.
[0118] This scenario has (TWCA) being filled with water from (TWC) via open valve (WA) while (TWCB)'s water content is being evacuated into the venturi via open valve (VVB). High pressure water from the high head of water (WL) entering valve (V1) enters the venturi system and mixes with water from (TWCB) and continues up connecting pipe (CHP) to valve (HV) causing the hammer effect. When the pressure is sufficient valve (HVB) opens allowing the high-pressure water to enter chamber (HB). The air in (HB) becomes pressurized as water from (CPH) enters (HB) and causes its water level (WLB) to rise. Valve (V2B) preferably remains open during normal plant operation but can be opened and closed as necessary. When the air pressure in (HB) is sufficient the water in (HB) travels up a connecting pipe and is discharged into the low head of water (WLL) at the point of discharge (POD-B). Valves (HVB), (VVB) and (WA) are closed after the desired amount of water has been evacuated and valve (HV) can be opened to reset the hammer effect. Then (HV) is closed.
[0119] Valves (TVB) and (VVA) are opened allowing chambers (TWCB) and (TWCA) to alternate duties. Now (TWCB) is being filled with water from (TWC) while water from (TWCA) is being evacuated via valve (VVA) into the venturi system.
[0120] This scenario only uses one chamber (TWCB) to operate the hammer effect. (TWCA) is not used in this example to demonstrate how a one chamber evacuation chamber like but not limited to (TWCB) can be used to evacuate water from the invented system using the hammer effect. Valve (TVB) is left open and (VVB) is left open. High pressure water entering through valve (V1) enters the venturi and draws water out from (TWCB) via valve (VVB) on account of the venturi effect vacuum. The mix of water from CHP and TWCB travels up (CHP) to (HV) creating the hammer effect. When the pressure is sufficient valve (HVB) opens allowing the high-pressure water to enter chamber (HB). The air in (HB) becomes pressurized as water from (CPH) enters (HB) and causes its water level (WLB) to rise. Valve (V2B) preferably remains open during normal plant operation but can be opened and closed as necessary. When the air pressure in (HB) is sufficient the water in (HB) travels up a connecting pipe and is discharged into the low head of water (WLL) at the point of discharge (POD-B). Valve (HV) opens after the pressure drop in HB and (HVB) and (HV) are closed to reset the hammer.
[0121] Auxiliary turbines like but not limited to: (ATHV), (ATB) and (ATV2B) can be added for additional power generation, if desired. (ATHV) and (ATB) preferably are positioned so they do not interfere with the water being discharged from the system.
[0122] With regard to the variability of various exemplary embodiments of the invention, turning to
[0123] Note that valve (V-AV/T) can be open to vent the turbine water chamber (TWC) to atmosphere. If (V-AV/T) is closed, then the turbine water chamber (TWC) is not vented to atmosphere. Valve (V-AV/T) can be opened and closed as necessary. The turbine water chamber (TWC) can have an air space between its water level (WLT) and valve (V5), or it/TWC can be filled with water and not have an air space.
[0124] The types of vacuum pump systems (such as but not limited to jet/ejector pumps, venturi systems, eductor systems, hammer pumps, double hammer pumps, and centrifugal pumps) that can be used in the disclosed systems are too numerous to list and their various designs for each type of pump system are too numerous to describe. The main purpose of the pumps is disclosed thoroughly herein, and it expected that comparable replacements may be substituted by those skilled in the art without departing from the scope of the invention herein.
[0125] Also seen in
[0126] In
[0127] Also illustrated in
[0128] In
[0129] Also depicted in
[0130] If desired, an air compressor (AC) can be added to force compressed (GAS) like but not limited to air down connecting pipe (CP-1A) to operate the venturi. Furthermore, any suitable pump system, like but not limited to: a venturi tube, a jet pump, a hammer pump, a double hammer pump and/or a centrifugal pump, can be used to move water through the system and to evacuate water from the system. This includes moving water that passed through turbine (TG) into connecting pipe (CP-1A) allowing it to be evacuated from the system at the point of discharge (POD) or reused.
[0131] In the exemplary embodiment shown in connection with
[0132] The exemplary embodiment shown in connection with
[0133] The exemplary embodiment shown in connection with
[0134] In this embodiment, the system has no turbine water chamber (TWC). The penstock feeds directly into the evacuation system (P Sys), which can have several different kinds of systems that will work such as but not limited to: a venturi, a jet pump/ejector system, a hammer pump, a double hammer pump and/or a centrifugal pump. The system that is ultimately employed in a given application will be calculated and tested by a skilled artisan in order to determine which type is best suited for the desired outcome.
[0135] Similarly, the design specifications of the penstock in characteristics such as diameter and length are too numerous to describe exhaustively herein but will be readily available in a particular application as applied by a skilled artisan. The invented Enhanced Hydroelectric Power Generator (EHPG) can be designed to have its penstock (PS) receive its supply of water from sources such as but not limited to: the low water head (WLL), the high-water head (WL), a water tower, and/or any other suitable source. Here, the penstock (PS) is shown drawing working fluid from the low water head (WLL).
[0136] In the exemplary embodiment shown in connection with
[0137] Turning to the exemplary embodiment shown in connection with
[0138] Turning to
[0139] As seen in
[0140] As illustrated in
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[0142] The exemplary embodiment depicted in connection with
[0143] (TWC) has no air space and is filled with water. It is not vented to atmosphere in this embodiment. This illustration shows the flow of water through the system. If desired, the turbine water chamber (TWC) can have an air space above the water level inside of the turbine water chamber (TWC). The turbine water chamber (TWC) can be vented to atmosphere by opening valve (V-AV/T) and closing that valve closes the turbine water chamber (TWC) to atmosphere.
[0144] The exemplary embodiment shown in connection with
[0145]
[0146] Also, in this example, a valve (VPOD) at the point of discharge is shown that can be opened and closed as needed. The discharge valve (VPOD) can be operated/adjusted to control the flow of water exiting (CP-1A) into (WLL) and if desired and also to control the flow of water entering (CP-1A) from the low head of water (WLL). Preferably, valve (VPOD) is open when the (EHPG) is operating.
[0147] In the exemplary embodiment shown in connection with
[0148] The illustrated innovation helps (drop, move and/or pull) water through the turbine/generator system (T/G) because the venturi effect (vacuum) lowers the pressure of the water below the (T/G). This creates a pressure differential between the water below the (T/G) and the water above the (T/G). The water below the (T/G) is now at a low pressure and the water above the (T/G) is at a high pressure. This pressure differential allows water to pass through the (T/G) to generate electricity.
[0149] The pressure differential allowing water to move through the (T/G) is generated by the venturi effect. High pressure water with slower velocity enters through valve (V1A) and travels through connecting pipe (CP-1) to the venturi system (VS). The high-water pressure is reduced to a lower pressure as it moves through the front (converging part) of the venturi. The low velocity of that same flow of water is increased to a higher velocity. The high-pressure water with a low velocity that entered the venturi system now has a low pressure and a high velocity moving through the venturi system's throat. The throat of a venturi is the narrow pipe between its front converging part, where water enters it from (CP-1) and its back diverging part, is where water exits the venturi and enters connecting pipe (CP-2). Water passing through the venturi system initiates the venturi effect (a vacuum) that not only causes a pressure differential between the water below the (T/G) system and the water above it, but it also allows the low-pressure water, that passed through (T/G) to be (sucked/drawn/moved) into the venturi via a vacuum port leading into the throat of the venturi system. The vacuum port of a venturi is a pipe connection that receives the low-pressure water that passed through the (T/G) allowing it to enter into the venturi system's throat. Now the combined flow of water in (CP-2) is delivered to the point of discharge where it is evacuated from the power plant. The low-pressure water is raised to a higher pressure as it travels through the back (diverging part) of the venturi. Likewise, the high velocity water is lowered to a low velocity flow as it travels through the back (diverging part) of the venturi. The combined flow of water that passed through the venturi now has a water pressure approximately equal to the water pressure that entered it. Likewise, the velocity of the combined flow of water exiting the venturi now has the same approximate velocity as the water that entered it (the venturi). The water pressure in the connecting pipe system is now able to move (lift it if required) the combined flow of water out of the point of discharge where it exits the power plant.
[0150] This model has the penstock's draft tube (DT) connected directly to the venturi system's vacuum port (VaP). The draft tube is the pipe connection that receives water being discharged from the turbine/generator system (T/G). It may be possible to connect the (T/G) directly to the venturi system's (vacuum port) that extends from the throat of the venturi. Here, the vacuum port would also be the draft tube.
[0151] The order of opening valve (V1A) which provides the flow from the high head (WL) of water into connecting pipe (CP-1) and valve (VT) which provides the flow of water that passes through the turbine generator system (T/G) can vary. They can occur simultaneously, valve (V1A) can be opened first or valve (VT) can be opened first. The best order for opening these valves needs to be calculated and tested by an expert in the appropriate arts. It is probably best to open valve (V1A) to initiate the vacuum effect and then open valve (VT). However, they can be opened as desired and/or necessary. Preferably, the penstock and draft tube are filled with water as is the connecting pipe system. However, the set up for the power plant needs to be calculated and tested by an expert in the appropriate arts for particular applications.
[0152] The high-pressure water entering the venturi from connecting pipe (CP-1) is reduced to a lower pressure as it moves through the front of the venturi and into the venturi system's throat; and its low velocity is increased to a higher velocity as it travels through the front of the venturi and into the throat of the venturi. Then as that water exits the venturi system's throat it begins to revert back to a high-pressure water flow with a low velocity. The venturi effect (vacuum) lowers the pressure of the water behind the (T/G) located in the draft tube which establishes a pressure differential. Accordingly, the water below the (T/G) is now at a lower pressure then the water above the (T/G). This pressure differential enables the high-pressure water above the (T/G) to move through it to generate electricity. Water passing through the (T/G) loses pressure operating the (T/G) system, as well. The venturi effect (vacuum) sucks/draws low pressure water from the draft tube and into the venturi via its vacuum port. Again, the combined flow of water entering the venturi system from the venturi system's vacuum port and from connecting pipe (CP-1) has its water pressure increased and its velocity decreased as it continues to move through the venturi system. Upon entering connecting pipe (CP-2) the pressure of the flow of water exiting the venturi should be approximately equal to the high pressure of the water that entered it from connecting pipe (CP-1). Likewise, the velocity of the water exiting the venturi system should be elevated to approximately the same low velocity of the water that entered it from connecting pipe (CP-1). This high-pressure water can now move the water to the point of discharge where it is evacuated from the power plant.
[0153] Jet pumpsor ejector systemsoperate under the similar modes of operation as the venturi systems. Jet pumps use a nozzle effect to lower the pressure behind the (T/G) to generate a pressure differential. The pressure differential allows the high-pressure water in front of the (T/G) system to pass through it and generate electricity. The jet pump's (ejector system's) nozzle effect also draws the low-pressure water that passed through the (T/G) system into the jet pump. There is a similar effect from using a jet pump compared to a venturi system. Water entering the jet pump from connecting pipe (CP-1) has its pressure reduced and its velocity increased. The nozzle effect replaces the venturi effect. Water that passed through the (T/G) is drawn into the jet pump via an opening because of the nozzle effect. The combined flow of water that entered the jet pump has its pressure increased and its velocity decreased. Its pressure becomes equal to or nearly equal to the high pressure of the water that entered the jet pump from connecting pipe (CP-1). Likewise, the velocity of the water exiting the venturi and entering (CP-2) has its velocity lowered to a point equal to or nearly equal to the velocity of the water that entered the jet pump from (CP-1).
[0154]
[0155] Turning to
[0156] This variation demonstrates that the venturi system (VS) or any other appropriate system (and any comparable component (P Sys) as mentioned above) is used to lower the pressure of the water in connecting pipe (CP-1). Accordingly, the combination of the venturi effect (or, e.g., the nozzle effect if a jet pump/ejector system is used) and the force of the water traveling through (CP-1) helps generate a pressure differential enabling the (T/G) to operate (generate power).
[0157] Water passing through the turbine/generator system (T/G) has its pressure reduced after operating (T/G). This allows the low-pressure water to enter the venturi (or any other appropriate system like but not limited to a (jet pump/ejector system). The high-pressure water in (CP-1) enters (VS) or any other appropriate system as previously stated. It has a relatively low velocity. However, after entering (VS)/(JP)/(PS) its pressure is reduced, and its velocity is increased. This allows the venturi (VS) or any other appropriate system as previously mentioned to draw the low-pressure water (entrained fluid) that passed through (T/G) into the venturi (VS) or any other appropriate system as previously mentioned. Here, the water that passed through (T/G) and the water from (CP-1) comingle. The velocity of the combined flow of water is reduced and its pressure increases as it travels through (VS) or any other appropriate system as previously mentioned. After exiting (VS) or any other appropriate system as previously mentioned, the velocity of the combined flow becomes equal to or nearly equal to the velocity of the flow of water from (CP-1) that entered (VS) or any other appropriate system as previously mentioned. Likewise, after exiting the venturi (VS) or any other appropriate system as previously mentioned, the pressure of the combined flow becomes equal to or nearly equal to the pressure of the flow of water from (CP-1) that entered (VS) or any other appropriate system as previously mentioned.
[0158] The combined flow of water travels through connecting pipe (CP-2) and exits the system through valve (V-POD). Valve (V-POD) can be opened and closed as necessary.
[0159] It may be necessary to prime (VS) or any other appropriate system as previously mentioned for it to operate in certain applications. To prime (VS) or any other appropriate system as previously mentioned, valve (V-POD) is closed and valves (VP), (V1-A) and (VT) are opened. Prime Pump System (PP) pumps water out from connecting pipe (CP-2). When (VS) begins operation valve (V-POD) is opened and pump system (PP) is shut off. Valve (VP) is closed. Valves (V-POD) and (VP) can be opened and closed as needed. Pump System (PP) can be used as desired.
[0160] (X) represents the depth of the water. This depth can vary. (B) and (C) represent the length of the penstock up to turbine/generator system (T/G). (D) represents the theoretical advantage of using the (VS) or any other appropriate system as previously mentioned. This advantage allows an increase in power generation than what can be expected from traditional hydroelectric power generation systems. The increase in the power generation is dependent upon many elements such as but not limited to the following: the size and specifications of the connecting pipes, the size and the specifications of the (T/G) system, the size and specification of the penstock (PS), the type and specifications of the system used to evacuate water that passed through (T/G) from the power plant, the specifications of pump system (PP), the flow of water through the system and the desired amount of power generation given the available amount of water.
[0161] This concept can be used for any desired amount of power generation given the appropriate supply of water (low head, moderate head and high heads of water). As in other variations, this embodiment can be operated in places such as but not limited to the following: ponds, creeks, streams, rivers, lakes and oceans.
[0162] The exemplary embodiment shown in connection with
[0163] As desired/necessary for a given application, the evacuation chamber (EC) can extend/travel any desired distance in order to drain its water content into a lower head of water. This method would replace having to pump the water from the evacuation chamber (EC). An optional auxiliary turbine (AT) can be placed at the (POD) to generate additional electricity if desired.
[0164] The exemplary embodiment depicted in connection with
[0165] This embodiment demonstrates that it can be added to existing hydroelectric power generating systems or replace them if desired. It can also be a new construction, too. The exemplary embodiment shown in connection with
[0166] (OIV) is the old intake valve for the old power plants penstock. (OPS) is the old penstock of the old power plant. This variation shows that the old power plant's dam is being reused. It also shows that parts of the penstock and the point of discharge of the old power plant can be used. The possible variations for modifying an older hydroelectric power plant with the new concept are too numerous to describe exhaustively herein, but these embodiments illustrate exemplary retrofit scenarios and their application in other comparable scenarios will be readily apparent to those skilled in the art when combined with the disclosure provided herein.
[0167]
[0168]
[0169] A connecting pipe (CP) is run from upstream to downstream taking advantage of the downward slope to generate an (elevation differential/pressure differential) between the high head (HH) of water upstream and the low head (LH) of water downstream. Thus, if the elevation drops 15 feet over a hundred yards then the system would have approximately a 10- to 15-foot head of water to drop down a penstock to operate a turbine system to generate power. If the decrease in elevation is 50 feet over a downward slope extending four miles, then there would be a potential of having an approximate (40- to 50-foot head of water) to drop down a penstock to generate electricity/perform work. The connecting pipe would need a support structure to keep the original elevation of the head of water to the penstock. The exact height of the connecting pipe's support structure will need to be calculated and tested by an expert in the appropriate arts taking into specific application topography and geological features, which is beyond the purview of this disclosure. Again, if the intake of the connecting pipe in the upstream head of water is 80 feet above sea level and the location of the penstock (which is five miles downstream) is 30 feet above sea level, then there would be about a 35- to 50-foot (elevation/pressure) differential that can be used to generate electricity. The exact elevation/pressure differential between the high head (HH) of water upstream and the low head (LH) of water downstream would need to be calculated by an expert in the appropriate arts depending upon applicable variables for a given installation. Consideration should be given to where the intake valve is positioned to receive upstream water and how much distance is required between the turbine and the low head of water downstream.
[0170] Consequently, if the intake valve (IV-1) is 80 feet above sea water (when positioned to receive water from the upstream high head (HH) of water and the low head (LH) of water is 30 feet above sea level then accommodation is necessary for the seasonal rise and fall of the water at the water at the downstream low head (LH) to ensure that power generation can occur as often as desired.
[0171] This exemplary embodiment has numerous advantages, such as the fact that dams are not required. Hydroelectric power plants could be placed in numerous locations even at sites where current hydroelectric power technology determined it was not feasible. The support structure for the connecting pipe can be designed to be environmentally friendly. It can also be used for recreational installations (e.g., walking, jogging, picnics, sports fields, fishing, bird watching, etc.).
[0172] In operation, the high head (HH) water enters intake valve (IV-1). It travels inside of connecting pipe (CP) to the penstock (PS), which is located downstream. Water drops down (PS) and operates turbine system (TGS) which is implied to be connected to a generator to generate electricity. The (PS) can be vented to atmosphere by air vent (AV/WT). Valve (V) controls whether (AV/WT) is opened or closed. Water passing through turbine system (TGS) empties into the low head (LH) of water. If desired an auxiliary turbine system (AT) can be positioned below the (PS) to capture the water dropping from (PS) and/or capture the force of the water moving downstream.
[0173]
[0174] Referring to the exemplary embodiment shown in connection with
[0175] This innovation allows for work to be done without the construction of a dam. This allows work, like power generation, to be accomplished at many additional sites where the head of water is too low, the elevation at the source is too low, or the construction of a dam would have adverse impact on the land use. Accordingly, the delivery system could send water form near, intermediate or faraway places to perform work, like generating power.
[0176] The delivery system or elevated structure (ESCP) allows water to be carried from a high head to a low head to perform work like generating power. The advantage here is that the elevated structure (ESCP) maintains a pressure differential between the high head (HH) and the turbine/generator (T/G) creating a pressure differential to perform work. The delivery system would maintain a high head from its high head source to the penstock (PS). Water would drop down the penstock to activate a turbine/generator system to generate power. The high head of water can be from a natural source or a manmade source. Natural sources can include but not be limited to: rivers, lakes, springs, and runoff water. Man-made sources of water can be but not limited to reservoirs, dams, tanks, over flow systems, flood control systems, catch basin systems and drain systems. Note that a catch basin system can be used to capture, run off, drainage, precipitation and water from a water fall to supply the delivery system's connecting pipe (CP) and or it's penstock (PS).
[0177] The types of delivery systems that can be used are too numerous to list but can include and are not limited to: pipe systems, tubing systems, canal systems, aqueducts, troughs, channels, drainage systems, run off systems, spillways, overflow systems and any combinations of these systems. These systems can be made of natural material, manmade/synthetic material and any combination of natural and manmade/synthetic materials. Natural materials that can be used include but not be limited to stone, dirt, clay, wood and/or any combination of those things. Manmade materials that can be used are too numerous to describe but can include but not be limited to: metal, cement/concrete, tile, and synthetic material/s (plastics/rubber/vinyl). Pumps can also be used to lift water up and into the connecting pipe. As long as the pump cost is lower than the power generation this can be a viable alternative. Refer to
[0178] Referring specifically to
[0179] The intake valve (IV) controls the flow of water entering connecting pipe (CP). Intake valve IV is opened allowing water from the high head (HH) of water, either natural and/or manmade, to travel through connecting pipe (CP). Water traveling through (CP) eventually drops down penstock (PS) to activate/operate a turbine/generator system (TG). The water then is evacuated from the power plant at the point of discharge, POD. The water exiting the system empties into the low head (LH) of water.
[0180]
[0181] Note that, it is entirely possible that some sections of the connecting pipe (CP) may need to travel through the earth like tunnels on a turnpike or an expressway have.
[0182] Note also that, referring to
[0183] Referring to
[0184] An elevation scale is provided in
[0185] Referring to
[0186] The exemplary embodiment shown in connection with
[0187] In
[0188] Additionally, existing power plants can be modified using the same principal described above to increase their power generation. Whether (TG1) is positioned inside of (CPD) or outside of it will need to be calculated and tested by an expert in the appropriate arts in a given application of the inventive principles set forth herein. Again, it can be placed at either location if desired.
[0189] Any embodiment of the present invention may include any of the optional or preferred features of the other embodiments of the present invention. The exemplary embodiments herein disclosed are not intended to be exhaustive or to unnecessarily limit the scope of the invention. The exemplary embodiments were chosen and described in order to explain the principles of the present invention so that others skilled in the art may practice the invention. Having shown and described exemplary embodiments of the present invention, those skilled in the art will realize that many variations and modifications may be made to the described invention. Many of those variations and modifications will provide the same result and fall within the spirit of the claimed invention. It is the intention, therefore, to limit the invention only as indicated by the scope of the claims.