WATER SUPPLY SYSTEM

Abstract

A water supply system for delivering water from a water inlet manifold to a water outlet manifold, comprises a first water inlet pipe, an air pressure water tank and a first water pump; the first water inlet pipe is connected to the water inlet manifold; the air pressure water tank is connected between the first water inlet pipe and a water suction pipe of the first water pump; a water outlet pipe of the first water pump is connected to the water outlet manifold; the air pressure water tank is provided with a preset first water level; and the quantity of gas compressed in the air pressure water tank allows a pressure inside the air pressure water tank to be an atmospheric pressure when water in the air pressure water tank is in the first water level.

Claims

1. A water supply system for delivering water from a water inlet manifold to a water outlet manifold, comprising a first water inlet pipe, an air pressure water tank and a first water pump; wherein, the first water inlet pipe is connected to the water inlet manifold; the air pressure water tank is connected between the first water inlet pipe and a water suction pipe of the first water pump; a water outlet pipe of the first water pump is connected to the water outlet manifold; the air pressure water tank is provided with a preset first water level; and the quantity of gas compressed in the air pressure water tank allows a pressure inside the air pressure water tank to be an atmospheric pressure when water in the air pressure water tank is in the first water level.

2. The water supply system according to claim 1, further comprising a second water inlet pipe, wherein one end of the second water inlet pipe is connected to the water inlet manifold, and the other end is connected to the water suction pipe of the first water pump; and the air pressure water tank is further connected to the water outlet pipe of the first water pump.

3. The water supply system according to claim 1, further comprising a second water pump, wherein a water suction pipe of the second water pump is connected to the air pressure water tank, and a water outlet pipe of the second water pump is connected to the water suction pipe of the first water pump.

4. The water supply system according to claim 3, wherein, the water outlet pipe of the first water pump is connected with a first pipeline, and the water suction pipe of the second water pump is connected with a third pipeline; a second pipeline is connected between the water suction pipe of the first water pump and the water outlet pipe of the second water pump; the first, second and third pipelines are respectively connected among each other; the air pressure water tank is connected to the first, second or third pipeline.

5. The water supply system according to claim 4, wherein, the second water inlet pipe is connected to the third pipeline.

6. The water supply system according to claim 4, wherein, the first water pump and the second water pump adopt a frequency converting control manner; when the air pressure water tank is communicated with the first or third pipeline, the first water pump is controlled in a way of keeping a pressure on the water outlet pipe of the first water pump constant, and the second water pump is controlled in a way of keeping a pressure on the water outlet pipe of the second water pump constant; the second water pump operates in a frequency of no less than a preset frequency; and when the pressure of the water outlet pipe of the second water pump is higher than a certain preset value, the second water pump stops operating.

7. The water supply system according to claim 1, wherein, the air pressure water tank is further provided with a second water level higher than the preset first water level, and the second water level corresponds to a limited pressure of the first water inlet pipe; the air pressure water tank stores water between the preset first water level and the second water level under a pressure.

8. The water supply system according to claim 7, wherein, the air pressure water tank is further provided with a maximum level higher than the second water level, and the maximum water level corresponds to a maximum pressure of the first water inlet pipe.

9. The water supply system according to claim 7, wherein, the air pressure water tank is further provided with a third water level; the third water level corresponds to a pressure of the water outlet pipe of the first water pump; the air pressure water tank is further provided with a starting water level which corresponds to a minimum water supply pressure of the water outlet manifold and is a pressure for starting the first water pump.

10. The water supply system according to claim 7, wherein, the air pressure water tank is further provided with a minimum water level lower than the preset first water level, the air pressure water tank is communicated with an atmosphere when water in the air pressure water tank is between the first water level and the minimum water level, and is at atmospheric pressure.

11. The water supply system according to claim 7, wherein, a water outlet of the air pressure tank is provided with a vortex-preventing device; and the vortex-preventing device is a horizontally arranged round baffle.

12. The water supply system according to claim 11, wherein, the vortex-preventing device is a cyclone preventer.

13. The water supply system according to claim 11, wherein, a throttle pipe or a throttle plate is arranged between an intake valve arranged on the water inlet manifold and the air pressure water tank.

Description

DESCRIPTION OF THE DRAWINGS

[0063] In order to make the technical solutions in the disclosure or in the prior art described more clearly, the drawings associated to the description of the embodiments or the prior art will be illustrated concisely hereinafter. Obviously, the drawings described below are only some embodiments according to the disclosure. Numerous drawings therein will be apparent to one of ordinary skill in the art based on the drawings described in the disclosure without creative efforts.

[0064] FIG. 1 is a complete structural diagram of a water supply system according to embodiments of the disclosure;

[0065] FIG. 2 is a main structural diagram of a water supply system shown in FIG. 1.

[0066] FIG. 3 is a diagram showing water levels in an air pressure water tank according to embodiments of the disclosure;

[0067] FIG. 4 is a structural diagram of an air pressure water tank provided with a vortex-preventing facility;

[0068] FIG. 5, FIG. 6, and FIG. 7 are diagrams showing connections of pipelines between a first water pump, a second water pump and a third water pump according to the disclosure;

[0069] FIG. 8 and FIG. 9 are a diagram showing a connection structure of an intake valve and a vent valve according to embodiments of the disclosure.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0070] In order to make the objects, technical solution and advantages of the present disclosure more clear, the present disclosure will be further described in detail with reference to the accompanying drawings and embodiments below. It should be understood that embodiments described here are only for explaining the present disclosure and the disclosure, however, should not be constructed as limited to the embodiment as set forth herein.

[0071] FIG. 1 illustrates a water supply system for delivering water from a water inlet manifold 11 to a water outlet manifold 5, including a first water inlet pipe 2, an intake valve 1, an air pressure water tank 3, a first water pump 4, a second water inlet pipe 6, a second water pump 10, a first valve 7, a second valve 8, a third valve 9 and a pipeline 12 connecting the air pressure water tank 3.

[0072] The first water inlet pipe 2 and the second water inlet pipe 6 are connected with the water inlet manifold 11. The first water inlet pipe 2 and the second water inlet pipe 6 are each provided with a starting and closing valve. The high point of the pipeline of the water inlet manifold 11 or the first water inlet pipe 2 is provided with the intake valve 1. An intake valve 42 is further arranged in front of a backflow-preventing device 41, and this intake valve 42 allows the water inlet manifold 11 not to generate a negative pressure. The first water inlet pipe 2 is connected with the air pressure water tank 3, the air pressure water tank 3 is connected with the water suction pipe of the first water pump 4 through the second valve 8, and the water outlet pipe of the first water pump 4 is connected with the water outlet manifold 5.

[0073] The air pressure water tank 3 is provided with a preset first water level 101. In a certain volume of air pressure water tank 3, the preset first water level 101 determines compressed gas quantity which can be sucked by the intake valve 1 above the first water level 101 and discharged by the vent valve 14 below the first water level, and a pre-filling manner can further be adopted. Due to a limited pressure and a maximum pressure of the first water inlet pipe 2, this gas quantity determines a second water level 102 and a maximum water level 105. The water volume of the water outlet manifold 5 is random, and is different varying from seasons. The volume of water between the second water level 102 and the first water level 101 is at a barometric state and has the advantage of closing, and it is recommended that this water volume is determined by average daily water volume meeting the water outlet manifold 5. Preferably, the air pressure water tank 3 is further provided with a minimum water level 104, and the volume of water between the first water level 101 and the minimum water level 104 is determined by maximum daily water volume meeting the water outlet manifold 5.

[0074] At ordinary times, incoming water enters the air pressure water tank 3 through the water inlet manifold 11 and the first water inlet pipe 2, and water in the air pressure water tank 3 is pressurized by the first water valve 4 to be supplied to the water outlet manifold 5.

[0075] When the water pressure of the water inlet manifold 11 is reduced, it is indicated that the pipeline is connected with the water inlet manifold 11, or the traffic of the municipal pipe network is large, resistance is increased, which reflects that the water pressure of the water inlet manifold 11 is reduced, the pressure of the air pressure water tank 3 is correspondingly reduced, a gas in the air pressure water tank is expanded, the water storage is reduced, the reduced water storage is supplemented by water volume of the water outlet manifold 5, and its effects are to reduce water inlet volume, reduce the traffic of the municipal pipe network, decrease resistance and maintain water inlet pressure is maintained.

[0076] When the water pressure of the water inlet manifold is further reduced to a limited pressure, the water inlet manifold 11 stops water suction, at this moment, the water level in the air pressure water tank 3 corresponds to the second water level. The water storage in the air pressure water tank 3 from the second water level to the first water level is continuously supplemented with the water volume of the water outlet manifold 5, the pressure is continuously reduced with expansion of the gas in the air pressure water tank until the intake valve 1 arranged at the first water inlet pipe 2 performs air suction. If a minimum water level is further set in the air pressure water tank, the sucked air is supplemented to the air pressure tank 3, and the water storage in the air pressure water tank 3 from the first water level to the minimum water level is continuously supplemented with the water volume of the water outlet manifold 5, which is equivalent to the non-negative pressure water supply device being in a state of supply water by the water tank.

[0077] When the incoming water volume of the water inlet manifold 11 is reduced or the water pressure is decreased to the limited pressure, the second water inlet pipe 6 can be closed; when the water level in the air pressure water tank 3 is below the second water level, the third valve 9 can further be opened, in such a way, the air pressure water tank 3 is connected with not only the water suction pipe of the first water pump 4 but further the water suction pipe of the second water pump 10, and water supply lift can be increased at any time.

[0078] When the water pressure of the water inlet manifold 11 is relatively high, the incoming water volume is sufficient, and the air pressure water tank 3 corresponds to the maximum water level, the first water inlet pipe 2 can be closed, the second water inlet pipe 6 can be opened, the second water inlet pipe 6 is connected with the water suction pipe of the first water pump 4 through valves 45 and 44; the first valve 7 can further be opened, the second valve 8 is closed, and the air pressure water tank 3 is connected with the water outlet pipe of the first water pump 4, in such a way, the air pressure water tank 3 is used as a stabilizer of the first water pump 4, which is equivalent to a non-regulation device type non-negative pressure water supply device.

[0079] When the water pressure of the water inlet manifold 11 is higher than a pressure required by the water outlet manifold 5, the water inlet manifold 11 is connected with the water outlet manifold 5, for example, is communicated with the first water inlet pipe, and the first valve 7 is opened, which forms a direct supply system.

[0080] FIG. 2 is a structural diagram of a water supply system shown in FIG. 1, which is a basic water supply system form, including the first water inlet pipe 2, the air pressure water tank 3, the first water pump 4 and the water outlet manifold 5, reasonably, further including the intake valve 1 and an air pressure water tank 13.

[0081] The effects of the air pressure water tank 13 are that first, the pressure is maintained, so that the first water pump 4 stops when in spare times or when flow is too small; second, when the water volume of the water outlet manifold 5 significantly changes, the significantly changed flow can be supplemented or balanced, and the operation state of the first water pump is stabilized. According to demand of balancing the significantly changed flow, the air pressure water tank 3 is connected to the water outlet pipe of the first water pump.

[0082] FIG. 3 is a diagram of a water level in an air pressure water tank 3. The air pressure water tank 3 is provided with the first water level 101 and the second water level 102. Corresponding to the height of the first water level 101, the first water inlet pipe 2 is connected, and the vent valve 14 is further arranged. The air pressure water tank 3 is provided with a water outlet pipe 17. A minimum water level 104 is further set below the first water level 101; the third water level 103 is further set above the second water level 102. A maximum water level 105 and a starting water level 106 are further set between the second water level 102 and the third water level 103.

[0083] The first water level 101 corresponds to a atmospheric pressure, the second water level 102 corresponds to the limited pressure of the first water inlet pipe 2, the maximum water level 105 corresponds to a maximum pressure of the first water inlet pipe 2, the starting water level 106 corresponds to a minimum water supply pressure of the water outlet manifold, namely, a pressure for starting a booster pump; the third water level 103 corresponds to a pressure of the water outlet pipe of the first water pump. When the maximum water level 105 is higher than the starting water level 106, even the third water level 103, and a direct supply manner can be adopted to supply water.

[0084] It is recommended that the first water inlet pipe 2 is connected to the height of the first water level 101; the first water inlet pipe 2 can further be connected above or below the height of the first water level 101. If the first water inlet pipe 2 is connected above the maximum water level 105, when the actual water level is higher than the maximum water level 105, the first water inlet pipe 2 is at a closed state as described above, the air pressure water tank 3 is connected to the water outlet pipe of the first water pump; when the actual water level is lower than maximum water level 105, the first water inlet pipe 2 is connected with the gas in the air pressure water tank 3. After being approved by a water supply department, the backflow preventing device arranged on the water inlet manifold 11 can be canceled to reduce the resistance of the pipeline and sufficiently utilize an intake pressure.

[0085] A vent valve 15 can further be repeatedly arranged above the height of the vent valve 14; a vent valve 16 can further be repeatedly arranged below the height of the vent valve 14. The purpose of repeatedly arranging the vent valve 15 and the vent valve 16 is to regulate the quantity of the gas compressed in the air pressure water tank, namely, the height of the first water level 101 is regulated, for example, the valve of the vent valve 15 is opened, which is equivalent to reducing the compressed air quantity; the valve of the vent valve 16 is opened, which is equivalent to increasing the compressed air quantity. The first water level is set at the height of the vent valve 15 or the vent valve 16, the heights of the second water level and the third water level correspondingly vary with corresponding water storage volume, but corresponding pressures are unchanged.

[0086] The compressed gas quantity is reduced, which is equivalent to increasing the water storage of the water tank equivalent to the cabinet-type non-negative pressure water supply device; the compressed gas quantity is increased, which is equivalent to reducing the water storage of the water tank equivalent to the cabinet-type non-negative pressure water supply device. In such a way, the water storage in the air pressure water tank of the disclosure can further be regulated relative to the defined capacity.

[0087] The vent valve 14, the vent valve 15 and the vent valve 16 can be any proper vent valves in the prior art, and can further be a suction and exhaust valve.

[0088] FIG. 4 illustrates an air pressure water tank. A vortex preventing facility 18 is arranged in the air pressure water tank connected with the water outlet pipe 17.

[0089] FIG. 5 is a diagram of a pipeline of connecting a first water pump and a second water pump according to one embodiment of the disclosure. The water suction pipe 19 of the first water pump 4 is connected with a second water pump 10 in parallel, and a pipeline connected in parallel with the second water pump 10 is provided with a one-way valve 21 which is a span pipe of the second water pump 10; the second water pump 10 can further connected in parallel with the water outlet pipe 20 of the first water pump 4.

[0090] FIG. 6 is a diagram of a pipeline of connecting a first water pump with a second water pump according to another embodiment of the disclosure. A first pipeline 22 is connected with the water outlet pipe 20 of the first water pump 4, and the first pipeline 22 is provided with a first valve 7. A second pipeline 23 is connected with the water suction pipe of the first water pump 4 and the water outlet pipe of the second water pump 10, and the second pipeline 23 is provided with a second valve 8. A third pipeline 24 is connected with the water suction pipe 19 of the second water pump 10, and the third pipeline 24 is provided with a third valve 9. The first pipeline, 22, the second pipeline 23 and the third pipeline 24 are connected with the pipeline 12. The one-way valve 21 is arranged on the span pipe of the second water pump 10. The first pipeline 22 is further provided with a fourth valve 43, the second pipeline 23 is further provided with a fifth valve 44, the third pipeline 24 is further provided with a sixth valve 45, the fourth valve 43, the fifth valve 44 and the sixth valve 45 are respectively connected among each other 100.

[0091] FIG. 7 is a diagram of a first water pump connection pipeline according to yet another embodiment of the disclosure. The water suction pipe on the second water pump 10 can further be connected with a third water pump 27, and each segment of the connection pipeline can further be provided with the first pipeline 22, the second pipeline 23, the third pipeline and the pipeline 26 one by one.

[0092] Corresponding to FIG. 5 to FIG. 7, the second water pump 10 is connected to the water outlet pipe 20 of the first water pump 4, or the third water pump 27 is connected to the water outlet pipe 20 of the first water pump 4 or the effluent water of the second water pump 10, and the like, which can be done by a professional according to the above thought, and thus can not be illustrated one by one.

[0093] FIG. 8 is a diagram of a connection structure of an intake valve according to one embodiment of the disclosure. It can be seen that a capacity for storing water consisting of the first water inlet pipe 2 and the air pressure water tank 3 forms two system high spots, and can further form more than two system high spots. In a water stream direction, the intake valve 1 is arranged at a first system high spot; other system high spots form a capacity for storing and compressing gases. When the volume of water stored in the air pressure water tank is taken, air suction is performed from the intake valve 1; when stored water below the first water level is filled, venting is performed from the vent valve 14. The intake valve 1 is at high spot of the pipeline, the suction and exhaust valve can further be used to remove gases that are not generated when vacuum is destroyed; the vent valve 14 can further use the suction and exhaust valve to supplement intake quantity when stored water below the first water level is taken.

[0094] The system high spot is a low point relative to a static pressure, or a gas gathering position. The other system high spots can further be connected with the pipeline to balance the water surface height of the first water level.

[0095] The first water inlet pipe 2 forms a first system high spot, which is easily done.

[0096] FIG. 9 is a diagram of a connection structure of an intake valve according to another embodiment of the disclosure. Since the pressure of the air pressure water tank 3 corresponds to that of the first water inlet pipe 2, when the vent valve 14 discharge gases or the pressure of the compressed gases in the air pressure water tank 3 is increased, the first water inlet pipe 3 is at a water supplying state, and a water stream direction is opposite to a venting direction. However, when in a static state, when the first water inlet pipe 2 is connected to the gas gathering position in the air pressure water tank 3, and a gas inhibition measure should be taken. Alternatively, the intake valve 1 has no venting function, or a gas inhibition structure 28 is adopted outside the air pressure water tank, or a gas inhibition structure 29 is adopted inside the air pressure water tank.

[0097] As described above, the water supply system of the disclosure as well as connection of the air pressure water tank with the first water pump and the second water pump is a basic reflection of the thought of the disclosure, and any improvements disclosed by the water supply method are all included within the protection scope of the disclosure.