Abstract
A rotary multiport greasing valve having an outer sleeve and an inner sleeve within the outer sleeve. The outer sleeve has at least one inlet port and at least 2 outlet ports. The inner sleeve has an inlet port, a central passageway, and an outlet port. The inner sleeves inlet port is fluidly connected to the outer sleeve's inlet port. The inner sleeve rotates within the outer sleeve so that the inner sleeves outlet port is circumferentially aligned with a selected outer sleeve outlet port creating a fluid pathway from the outer sleeve inlet port into the inner sleeve's inlet port through the central passageway through the inner sleeve's outlet port and finally through the outer sleeves outlet port to create an open flowpath. In certain instances, the inner sleeve inlet port is longitudinally shifted so as not to align with any portion of an outlet sleeve outlet port.
Claims
1. A rotary greasing valve comprising: an outer sleeve having an inlet port and at least 4 radially directed outlet ports, wherein, the inlet port is co-axial with the inner sleeve, an inner sleeve having a central fluid pathway, a radially directed fluid pathway, and is rotationally and longitudinally movable within the outer sleeve, wherein, upon alignment, a fluid pathway exists between the inner sleeve fluid pathway and at least two of the 4 radially directed outer sleeve outlet ports, further wherein a fluid flow pathway does not exist between the inner sleeve fluid pathway and all of the at least 4 radially directed out ports.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) FIG. 1 depicts a pod connected to various greasing points on a wellhead.
(2) FIG. 2 is a side view of a grease distributor.
(3) FIG. 3 is a top view of the grease distributor.
(4) FIG. 4 is an orthographic view of an alternate embodiment of a rotary multiport valve.
(5) FIG. 5 is a side cutaway view of rotary multiport valve.
(6) FIG. 6 is a cutaway view of the rotary multiport valve viewed from the upper end of the rotary multiport valve having an aligned fluid pathway.
(7) FIG. 7 is a cutaway view of the rotary multiport valve viewed from the upper end of the rotary multiport valve having a non-aligned fluid pathway.
(8) FIG. 8 is an orthographic view of an alternative arrangement of the invention.
(9) FIG. 9 is a side cutaway view of a rotary multiport valve.
(10) FIG. 10 is a side view of an alternative arrangement of the invention having an axially movable inner sleeve.
(11) FIG. 11 depicts the rotary multiport valve from FIG. 10 with inner sleeve shifted.
(12) FIG. 12 is a top-down cutaway view of a rotary multiport valve showing an inner sleeve having multiple fluid flowpaths.
(13) FIG. 13 is a group of rotary multiport valves schematically depicting multiple fluid pathways.
DETAILED DESCRIPTION
(14) The description that follows includes exemplary apparatus, methods, techniques, or instruction sequences that embody techniques of the inventive subject matter. However, it is understood that the described embodiments may be practiced without these specific details.
(15) FIG. 1 depicts a pod 300 connected to various greasing points, usually for each frack valve, on a wellhead. The pod 300 includes a storage tank 302. The storage tank 302 has an inlet 304 that is attached to any of the low-pressure grease supply lines. The storage tank 302 also includes a grease level indicator 306. In some instances, the grease level indicator may display lights 310 and or a mechanical indicator such as a flag 312 where a raised or visible flag may indicate a low grease level within the storage tank 302 and where a light or combination of lights that may be on or off or display various colors when illuminated to indicate the grease level within storage tank 302. The storage tank 302 is typically adjacent to the high-pressure grease pump 320 and supplies grease to high-pressure grease pump 320. An air supply line from the supply source (not shown) is also connected to high-pressure grease pump 320 and supplies the power to operate the high-pressure grease pump 320. The high-pressure grease pump 320 then supplies the grease from storage tank 302 at high-pressure, where the grease pressure from the high-pressure grease pump 320 is at least sufficient to overcome the pressure within the frack valve during fracking and in some instances to up to 15,000 psi, to grease distributor 330. Grease distributor also referred to as a rotary multiport valve 330 has an input and at least 2 outputs. In this case grease distributor 330 has output 332, 334, and 336. Each of the outputs 332, 334, and 336 may be connected to a high-pressure, capable of withstanding up to 15,000 psi, grease distribution hose, such as hose 340, 342, and 344. One or more of the outputs may be blocked and do not provide a connection to the wellhead 350.
(16) FIG. 2 is a side view of a grease distributor 400 while FIG. 3 is a top view of the grease distributor 400. The grease distributor 400 includes an input 402 that receives high-pressure grease from the high-pressure grease pump. The high-pressure grease then flows into the interior of grease distributor 400 where a movable flowpath 450 directs the grease to any one of the outputs such as output 404, 406, or 408. The movable flowpath 450 receives the grease from input 402 and is then rotated by a motor such as air-driven motor 410 to align the movable flowpath output 452 with any of the outputs 404-409. In the event that no output is desired or access to an output that is not adjacent to the previously supplied output the movable flowpath 450 may be raised or lowered within a bore within housing 420 such that housing 420 blocks the grease flowpath for as long as desired by the operator or during the movable flowpath's 450 rotation from a first flowpath to a second flowpath or non-adjacent flowpath.
(17) FIG. 4 is an orthographic view of an alternate embodiment of a rotary multiport valve 10 having an outer sleeve 11, an outer sleeve inlet port 12, a 1.sup.st outer sleeve outlet port 14, a 2.sup.nd outer sleeve outlet port 16, and 3.sup.rd outer sleeve outlet port 18. The outer sleeve 11 has 3 additional outlet ports that are not shown. Additionally, the outer sleeve 11 has a 1.sup.st indicator 20, a 2.sup.nd indicator 22, and a 3.sup.rd indicator 24. The outer sleeve 11 has 3 additional indicators that are not shown. At the distal end of the outer sleeve 11 is rotary actuator 30. Rotary actuator 30 may be pneumatic, hydraulic, or electric.
(18) When in use, a fluid supply line is attached to outer sleeve inlet port 12 so that the fluid is able to flow into the interior of the rotary multiport valve 10 where it is then directed to at least one of the outlet ports such as outer sleeve outlet ports 14, 16, or 18. Depending upon which outlet port 14, 16, or 18 the fluid is directed the indicator associated with the outlet port to which the fluid is directed will be actuated. In this case fluid is directed from outer sleeve inlet port 12 through the interior of the rotary multiport valve 10 to outlet port 16. Therefore, indicator 22 is actuated in this instance indicator 22 is retracted radially inward. In some cases the indicator 22 may be extended or may be a light, colored or otherwise. In some cases the indicator 22 may be an electrical switch that operates in conjunction with a mechanical or light indicator.
(19) FIG. 5 is a side cutaway view of rotary multiport valve 10. The outer sleeve 11 includes outer sleeve inlet port 12, outer sleeve outlet port 16, and in this case the radially opposed outer sleeve outlet port 17. Within the outer sleeve 11 is inner sleeve 40. Inner sleeve 40 includes a flowpath 42 that is axially aligned with the centerline 44 of inner sleeve 40 and in this case is also in coaxial alignment with the centerline of outer sleeve 11. In certain instances, the centerline of outer sleeve 11 and the centerline of outer sleeve 40 may not be coaxial. At the lower end 46 of inner sleeve 40, flowpath 42 is aligned with the flowpath of outer sleeve inlet port 12. At some point along the length of flowpath 42 is radial flowpath Radial flowpath 48 is longitudinally aligned with the flowpaths of the outer sleeve outlet ports such as outer sleeve outlet ports 16 and 17. However radial flowpath 48 is only circumferentially aligned with the desired flowpath associated with an outer sleeve outlet port such as outer sleeve outlet ports 16 and 17. In this case flowpaths 48 and the flowpath of outer sleeve outlet port 16 are aligned while a flow path between inner sleeve flowpath 42 and outer sleeve outlet port 17 is blocked or closed. In certain instances, inner sleeve 40 may have multiple radial flow paths formed within inner sleeve 40 so that 2 or more outer sleeve outlet ports may be accessed at the same time.
(20) Additionally, outer sleeve 11 includes indicators such as indicators 22 and 23. Inner sleeve 40 in this case includes recess 50. Recess 50 is circumferentially aligned with fluid flow path 48 such that when fluid flow path 48 is aligned with the fluid flowpath of outer sleeve outlet port 16 the radially inward portion 52 of indicator 22 is pushed radially inward into recess 50 within inner sleeve 40 by bias device 54. In this case bias device 54 is a spring however bias device 54 may be anything known in the industry that will apply sufficient force in the radially inward direction to cause indicator 22 to move radially inward into recess 50. At the same time indicator 23 is held radially outward by the outer surface of inner sleeve 40 until such time as recess 50 rotates into alignment with the radially inward end 55 of indicator 23. At the upper end 60 of the outer sleeve 11 is rotary actuator 30. Rotary actuator 30 is generally held rigidly with respect to outer sleeve 11 and applies torque to inner sleeve 40 in order to rotate inner sleeve 40 within outer sleeve 11.
(21) FIG. 6 is a cutaway view of the rotary multiport valve 10 from the upper end 60 of the rotary multiport valve 10. The outer sleeve 11 includes at least outlet ports 14, 16, and 18. Within the outer sleeve 11 is inner sleeve 40 inner sleeve 40 includes a coaxial fluid pathway 42 and intersecting coaxial fluid pathway 42 is fluid pathway 48 directed radially outward from fluid pathway 42. The inner sleeve 40 is able to rotate within outer sleeve 11. As shown in FIG. 6 fluid pathway 48 has been rotated within outer sleeve 11 such that fluid pathway 48 is aligned with outer port 16 in outer sleeve 11. When the fluid pathway 48 is aligned with the outer ports, such as outer port 14, 15, 16, 17, 18, or 19 the rotary multiport valve 10 is open with regard to the outer port with which the fluid pathway 48 is aligned. In certain instances, such as shown in FIG. 7 fluid pathway 48 is not aligned with any of the outer ports, such as outer ports 14, 16, or 18 such that the rotary multiport valve 10 is considered closed.
(22) FIG. 8 is an orthographic view of an alternative arrangement of the invention. Rotary multiport valve 100 has an outer sleeve 111, an outer sleeve inlet port 112, a 1.sup.st outer sleeve outlet port 114, a 2.sup.nd outer sleeve outlet port 116, and 3.sup.rd outer sleeve outlet port 118. The outer sleeve 111 has 3 additional outlet ports that are not shown. Additionally, the outer sleeve 111 has a 1.sup.st indicator 120, a 2.sup.nd indicator 122, and a 3.sup.rd indicator 124. The outer sleeve 111 has 3 additional indicators that are not shown. At the distal end of the outer sleeve 111 is rotary actuator 130.
(23) When in use, a fluid supply line is attached to outer sleeve inlet port 112 so that the fluid is able to flow into the interior of the rotary multiport valve 110 where it is then directed to at least one of the outlet ports such as outer sleeve outlet ports 114, 116, or 118. Depending upon which outlet port 114, 116, or 118 the fluid is directed the indicator associated with the outlet port to which the fluid is directed will be actuated. In this case fluid is directed from outer sleeve inlet port 112 through the interior of the rotary multiport valve 110 to outlet port 16. Therefore, indicator 122 is actuated and in this instance indicator 122 is retracted radially inward in other cases the indicated may be retracted and only the active indicator is extended.
(24) FIG. 9 is a side cutaway view of rotary multiport valve 100. The outer sleeve 111 includes outer sleeve inlet port 112 outer sleeve outlet port 116 and in this case the radially opposed outer sleeve inlet port 117. Within the outer sleeve 111 is inner sleeve 140. Inner sleeve 140 includes a flowpath 142 that is axially aligned with the centerline 144 of inner sleeve 140 and in this case is also in coaxial alignment centerline of outer sleeve 111. In certain instances, the centerline of outer sleeve 111 and the centerline of outer sleeve 140 may not be coaxial. At the lower end 146 of inner sleeve 140 is flowpath 142. At some point along the length of flowpath 142 is radial flowpath 148. Radial flowpath 148 is longitudinally aligned with the flowpath's of the outer sleeve outlet ports such as outer sleeve outlet ports 116 and 117. However radial flowpath 148 is only circumferentially aligned with the desired flowpath associated with an outer sleeve outlet port such as outer sleeve outlet ports 116 and 117. In this case flowpaths 148 and the flowpath of outer sleeve outlet port 116 are aligned while a flow path between inner sleeve flowpath 142 and outer sleeve outlet port 117 is blocked or closed. In certain instances, inner sleeve 40 may have multiple radial flow paths formed within inner sleeve 40 so that 2 or more outer sleeve outlet ports may be accessed at the same time. Inner sleeve flowpath 142 also includes radial flowpath 143. Radial flowpath 143 is longitudinally aligned with outer sleeve inlet port 112 when radial flowpath 148 is aligned with outer sleeve outlet port 116. A complete fluid circuit is created from outer sleeve inlet port 112 through radial flowpath 143, through flowpath 142, through radial flowpath 148, and to outer sleeve outlet port 116 when radial flowpath's 143 and 148 are aligned with the outer sleeve inlet 112 and the outer sleeve outlet 116. Additional radial flowpaths, including at least radial flowpath's 113 and 115, are provided so that as radial flowpath 148 may align with outer sleeve outlet 117, radial flowpath 113 is provided to allow fluid access between outer sleeve inlet port 112 and fluid flow path 142 and thus to radial flowpath 148 and outer sleeve outlet port 117.
(25) FIG. 10 is a side view of an alternative arrangement of the invention. The rotary multiport valve 200 has an outer sleeve 211 which includes outer sleeve inlet port 212, outer sleeve outlet port 216, and in this case the radially opposed outer sleeve inlet port 217. The outer sleeve 211 includes cavity 215. Within the cavity 215 of the outer sleeve 211 is inner sleeve 240. The inner sleeve 240 may rotate circumferentially within the cavity 215. Generally, motor 230 provides the circumferential force to rotate inner sleeve 240 within the outer sleeve 211. Outer sleeve 211 also has recess 237 within the interior of outer sleeve 211. The inner sleeve 240 includes a lug 219 that may be circumferential. The inner sleeve 240 may move longitudinally within the outer sleeve 211. The inner sleeve 240, in this case, is restrained by lug 219 reaching the upper shoulder 221 of cavity 237. In an embodiment of the invention the inner sleeve 240 is free to move longitudinally within motor 230. A linear actuator 231, which may be hydraulic, pneumatic, or electric, provides axial force to move sleeve 240 within both motor 230 and outer sleeve 211. Inner sleeve 240 includes a flowpath 242 that may be axially aligned with the centerline 244 of inner sleeve 240. The rotary multiport valve 200 has a lower end 246. At the lower end of inner sleeve 240, flowpath 242 is aligned with the flowpath of outer sleeve inlet port 212, although the outer sleeve inlet port 212 does not necessarily require alignment with the centerline of the inner sleeve 240 or with flowpath 242 as long as a flowpath exists between outer sleeve inlet port 212 and the inner sleeve flowpath 242. At some point along the length of flowpath 242 is radial flowpath 248. Radial flowpath 248 may be longitudinally aligned with the flowpaths of the outer sleeve outlet ports such as outer sleeve outlet ports 216 and 217 by linear actuator 231. While radial flowpath 248 may be circumferentially aligned as desired and longitudinally aligned within the travel limits of the inner sleeve 240 within the outer sleeve 211, in this instance radial flowpath 248 is circumferentially aligned with the desired flowpath associated with the outer sleeve outlet port 216. In this case flowpaths 248 and the flowpath of outer sleeve outlet port 216 are aligned while a flow path between inner sleeve flowpath 242 and outer sleeve outlet port 217 is blocked or closed.
(26) As depicted in FIG. 10, outer sleeve 211 includes indicators such as indicators 222 and 223. Inner sleeve 240 in this case includes recess 250. Recess 250 is circumferentially aligned with fluid flow path 248 such that when fluid flow path 248 is aligned with the fluid flowpath of outer sleeve outlet port 216 the radially inward portion 252 of indicator 222 is pushed radially inward into recess 250 within inner sleeve 240 by bias device 254. At the same time indicator 223 is held radially outward by the outer surface of inner sleeve 240 until such time as recess 250 rotates into alignment with the radially inward end 255 of indicator 223. At the upper end 260 of the outer sleeve 211 is rotary actuator 230. Rotary actuator 230 is generally held rigidly with respect to outer sleeve 211 and applies torque to inner sleeve 240 in order to rotate inner sleeve 240 within outer sleeve 211. Additionally, a linear actuator 231 is located adjacent to rotary actuator 230. Inner sleeve 240 is free to move longitudinally within rotary actuator 230 in order to allow linear actuator 231 to shift the inner sleeve 240 from an open position shown in FIG. 6 to a closed position that is longitudinally offset from outlet ports 216 and 217.
(27) FIG. 11 depicts the rotary multiport valve 200 from FIG. 10 after actuation of linear actuator 231 shifting the inner sleeve from a lower open position where inner sleeve port and flowpath 248 were longitudinally aligned with outer sleeve outlet port 216, to an upper closed position where flowpath 248 is longitudinally offset from outer sleeve outlet port 216. With flowpath 248 shifted upwards to a closed position the rotary actuator 230 may shift flowpath 248 to align with any of the desired ports about the circumference of outer sleeve 211. Once flowpath 248 is aligned with any of the desired ports linear actuator 231 is again actuated to shift the sleeve from the upper closed position to a lower open position such that flowpath 248 may be moved from an open position and alignment with outer sleeve flow port 216 to a closed position and then into alignment with outer sleeve flow port 217 while skipping any intermediate flow ports. Cavity 215 is formed by outer sleeve 211 and inner sleeve 240. The volume of cavity 215 may increase or decrease as inner sleeve 240 is moved longitudinally within outer sleeve 211.
(28) When in use, a fluid supply line is attached to outer sleeve inlet port 212 so that the fluid is able to flow into the interior of the rotary multiport valve 210 where it is then directed to at least one of the outlet ports such as outer sleeve outlet ports 216 or 217. Depending upon which outlet port 216 or 217 the fluid is directed the indicator associated with the outlet port to which the fluid is directed will be actuated. In this case fluid is directed from outer sleeve inlet port 212 through the interior of the rotary multiport valve 200 to outlet port 216. Therefore, indicator 222 is actuated and in this instance indicator 222 is retracted radially inward. In other cases, the indicated may be retracted and only the active indicator is extended.
(29) FIG. 12 is a top-down cutaway view of a rotary multiport valve 500 showing an inner sleeve 540. The outer sleeve 511 includes at least outer sleeve outlet ports 514, 515, 516, 517, 518, and 519. Within the outer sleeve 511 is inner sleeve 540. Inner sleeve 540 includes a coaxial fluid pathway 542 having multiple radial flow paths, in this case 1.sup.st flowpath 548 and 2.sup.nd flowpath 547 formed within inner sleeve 540 that intersect fluid pathway 542. Radial flow paths 548 and 547 are at some point longitudinally aligned with outer sleeve outlet ports 514, 515, 516, 517, 518, and 519 but not necessarily circumferentially aligned with outer sleeve outlet ports 514, 515, 516, 517, 518, and 519. In this case the inner sleeve 540 includes radial flow path 548 and 547 and is aligned so that 2 or more outer sleeve outlet ports, here outer sleeve port 516 and outer sleeve port 517 may be circumferentially and longitudinally aligned to provide at least two open fluid flow pathways at the same time. Additionally, an indicator may be provided for each outer sleeve outlet port to indicate whether the port is an open fluid pathway or closed fluid pathway. Here indicators 520, 521, 522, 523, 524, and 525 are provided. In this instance indicators 520, 521, 524, and 525 are extended radially outward to indicate a closed fluid pathway while indicators 522 and 523 remain recessed to indicate the open fluid pathways between radial flow paths 547 and 548 and outer sleeve outlet ports 517 and 516 respectively.
(30) FIG. 13 is a group of rotary multiport valves 600, 602, 604, and 606. Each rotary multiport valve includes an outer sleeve inlet port generally aligned to provide fluid access to the central fluid pathways 610, 612, 614, and 616 of each of the rotary multiport valve 600, 602, 604, and 606 respectively. The outer sleeve inlet port of the central rotary multiport valve 600 is, in this instance connected to a high-pressure fluid supply line. Rotary multiport valve 600 includes 3 outer sleeve outlet ports 620, 622, and 624. Outer sleeve outlet port 620 is connected to a fluid pathway 621 that is in turn connected to outer sleeve inlet port of rotary multiport valve 604. Outer sleeve outlet port 622 is connected to a fluid pathway 623 that is in turn connected to outer sleeve inlet port of rotary multiport valve 606. Outer sleeve outlet port 624 is connected to a fluid pathway 625 that is in turn connected to outer sleeve inlet port of rotary multiport valve 602. With each of rotary multiport valve 600's 3 outer sleeve outlet ports 620, 622, and 624 the inner sleeve 613 of rotor multiport valve 600 may be rotated to provide fluid to the outer sleeve inlet port of any of the rotary multiport valves 602, 604, or 606. In turn each of the inner sleeve's 611, 615, or 617 rotary multiport valve 602, 604, or 606 respectively may be rotated to provide fluid access or to deny fluid access to any of the outer sleeve outlet ports of the rotary multiport valves 602, 604, or 606. For instance, as shown in FIG. 13 is an open fluid pathway where the inner sleeve 613 of rotary multiport valve 600 has been rotated to circumferentially align with outer sleeve outlet port 622 so that fluid may be provided from rotary multiport valve 600s outer sleeve inlet port through the central fluid pathway 612 through the radio fluid pathway 640 the outer sleeve outlet port 622 then through fluid pathway 623 to rotary multiport valve 606 outer sleeve inlet port then through central fluid pathway 616 to radial fluid pathway 642 which is been rotated and a circumferential alignment with outer sleeve outlet port 650. In the configuration shown a single inlet port may be distributed to a possible 9 different outlets. In other configurations more or less outlet configurations are possible.
(31) Plural instances may be provided for components, operations or structures described herein as a single instance. In general, structures and functionality presented as separate components in the exemplary configurations may be implemented as a combined structure or component. Similarly, structures and functionality presented as a single component may be implemented as separate components. These and other variations, modifications, additions, and improvements may fall within the scope of the inventive subject matter.
