CN113719658A - Flow-regulating pressure-regulating valve - Google Patents
Flow-regulating pressure-regulating valve Download PDFInfo
- Publication number
- CN113719658A CN113719658A CN202111063656.4A CN202111063656A CN113719658A CN 113719658 A CN113719658 A CN 113719658A CN 202111063656 A CN202111063656 A CN 202111063656A CN 113719658 A CN113719658 A CN 113719658A
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- valve body
- ring
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 10
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 9
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 9
- 241001330002 Bambuseae Species 0.000 claims description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 9
- 239000011425 bamboo Substances 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000006872 improvement Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention provides a flow-regulating pressure-regulating valve, which comprises a valve body, a guide cylinder and a valve core cylinder, wherein a water inlet and a water outlet are arranged at two ends of the valve body, the guide cylinder is fixedly arranged in the valve body and forms an annular flow passage, one side of the guide cylinder is opened, the valve core cylinder is axially and slidably arranged in the guide cylinder and is positioned at the opening, a piston for opening and closing the water outlet of the valve body is fixedly arranged at the outer end of the valve core cylinder, a flow limiting device is assembled in the annular flow passage and comprises an annular seat and an annular rotor, the annular seat is fixedly arranged in the annular flow passage, an annular blind groove is formed at one end of the annular seat, a plurality of first through holes are annularly formed at the bottom of the annular seat, the first through holes are communicated with the annular blind groove on the annular seat, the annular rotor is rotatably arranged in the annular blind groove, second through holes which are the same as the first through holes in number and correspond to the size are uniformly formed in the annular rotor in the annular direction, when the second through holes rotate along with the annular rotor to realize annular displacement, and the overlapping area of the second through hole and the first through hole is adjusted.
Description
Technical Field
The invention relates to a valve, in particular to a flow-regulating pressure-regulating valve.
Background
The flow-regulating pressure-regulating valve mainly comprises a valve body, a piston guide rail, a built-in crank spacer mechanism and other internal parts. The crank spacer is mainly adopted to drive the piston to move, axially symmetrical annular flow channels are formed in the valve body, the flow area is effectively controlled, and the flow channels with the sections decreasing from the inlet to the outlet are formed, so that the flow velocity of the fluid gradually increases, and jet flow collision is formed towards the center direction of the pipeline through multiple holes in the circumferential direction, and the purposes of energy dissipation, pressure reduction and flow regulation are achieved.
In the prior art, for example, the invention patent with patent number 201710132224.1 discloses a self-operated piston flow-regulating pressure-regulating valve, which comprises a self-operated piston flow-regulating pressure-regulating valve body; the self-operated piston flow and pressure regulating valve body consists of a connecting pipeline, a ball valve, a valve back pressure gauge, a valve front pressure gauge, a piston flow and pressure regulating valve, a pilot valve, a needle valve, a throttle valve, a filter valve, a telescopic joint, a clutchable gear box and a hydraulic cylinder; the filter valve is arranged, so that large particles can be removed, and blockage and energy efficiency reduction of the whole system caused by pollutants are prevented; the hydraulic cylinder is pushed by the pipeline liquid pressure to adjust the pressure difference, and external electric power or other energy sources are not needed, so that the convenience is greatly improved; the motion direction of the piston is consistent with the fluid direction, and the flow channel is simple, so that the cavitation erosion coefficient is obviously improved, and the cavitation erosion prevention effect under high pressure difference is obvious; the invention has reasonable design, simple structure and convenient operation.
However, the above-mentioned valves have disadvantages in that: the valve drives the piston to slide by taking the differential pressure as power and an executing mechanism, and the executing mechanism adopts a single-action angle stroke hydraulic cylinder, so that on one hand, whether the power source provided by the differential pressure in the valve can sufficiently drive the hydraulic cylinder to carry out angular motion and drive the piston to move is uncertain; on the other hand, even can confirm that the pressure differential in the valve can drive the pneumatic cylinder and carry out angular motion, its final effect is the piston, the opening and closing member of valve body promptly to lead to the piston to be in the motion state of constantly adjusting pressure always, increase the wearing and tearing between piston and the guide pin bushing, and then can seriously influence the valve life-span.
Disclosure of Invention
Therefore, in order to solve the above problems, the present invention provides a flow regulating pressure regulating valve.
In order to realize the technical problem, the invention adopts the solution that the flow regulating and pressure regulating valve 1 comprises a valve body, a guide cylinder and a valve core cylinder, wherein a water inlet and a water outlet are arranged at two ends of the valve body, the guide cylinder is fixedly arranged in the valve body and forms an annular flow passage, one side of the guide cylinder is opened, the valve core cylinder is axially and slidably arranged in the guide cylinder and is positioned at the opening, a piston for opening and closing the water outlet of the valve body is fixedly arranged at the outer end of the valve core cylinder, a flow limiting device is assembled in the annular flow passage and comprises a ring seat and an annular rotor, the ring seat is fixedly arranged in the annular flow passage, one end of the ring seat is provided with an annular blind groove, the bottom of the ring seat is annularly provided with a plurality of first through holes which are communicated with the annular blind groove on the ring seat, the annular rotor is rotatably arranged in the annular blind groove, and the annular rotor is annularly and uniformly provided with second through holes which have the same number and size corresponding to the first through holes, when the second through hole rotates along with the annular rotor, annular displacement is realized, and the overlapping area of the second through hole and the first through hole is adjusted.
The further improvement is that: and a flow stabilizing piece is rotatably arranged in the second through hole, and a shaft piece is arranged on the flow stabilizing piece.
The further improvement is that: at least two arc walls have been seted up to the periphery side of annular rotor, and this arc wall forms the seal groove with the ring seat jointly, and the spacer is installed to the intermediate position that lies in the arc wall on the annular rotor, and first slot portion and second slot portion are separated into with the seal groove to the spacer, are provided with reset spring in the second slot portion, fixed mounting has the feed liquor pipe with first slot portion intercommunication on the ring seat, and the other end of feed liquor pipe is connected near the position of water inlet on with the valve body.
The further improvement is that: and a first sealing ring is embedded on the inner ring surface of the opening of the guide cylinder, the first sealing ring is pressed against the outer wall of the valve core cylinder, and a second sealing ring is embedded on the outer peripheral side of the piston.
The further improvement is that: the periphery of the valve core cylinder is provided with a ring groove which is inwardly reduced in diameter, and the inner ring surface of the opening of the guide cylinder is embedded into the ring groove.
The further improvement is that: the outer end face of the piston is provided with a flow-limiting cover, a plurality of flow-limiting holes are uniformly formed in the ring face of the flow-limiting cover, and the flow-limiting holes are strip-shaped.
By adopting the technical scheme, the invention has the beneficial effects that:
the flow regulating and pressure regulating valve is characterized in that a flow limiting device is arranged in the annular flow passage, the flow limiting device comprises a ring seat and an annular rotor which rotate mutually, a plurality of first through holes which are distributed circumferentially are formed in the ring seat, a plurality of second through holes are formed in the annular rotor, and the flow in the annular flow passage is cut off by regulating the overlapping area of the second through holes and the first through holes, so that the flow stabilizing effect is achieved.
Drawings
Fig. 1 is a schematic structural diagram of a flow regulating and pressure regulating valve according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a ring seat in the flow regulating pressure regulating valve according to the embodiment of the invention.
Fig. 3 is a schematic view of the installation of the ring rotor in the flow-regulating pressure-regulating valve according to the embodiment of the invention.
Fig. 4 is a schematic cross-sectional view of fig. 3.
In the figure: the valve comprises a valve body 1, a water inlet 2, a water outlet 3, a guide cylinder 4, an annular flow passage 5, a valve core cylinder 6, a first sealing ring 7, a second sealing ring 8, an annular groove 9, a rotating shaft 10, a rocker arm 11, a connecting rod 12, a piston 13, a flow limiting cover 14, a flow limiting hole 15, a ring seat 16, a liquid inlet pipe 17, a first through hole 18, a central hole 19, an annular rotor 20, a second through hole 21, a flow stabilizing sheet 22, a shaft piece 23, a first groove part 24, a spacer 25, a return spring 26 and a second groove part 27.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and specific embodiments.
The first embodiment is as follows:
referring to fig. 1, the flow regulating and pressure regulating valve disclosed in the embodiment of the present invention includes a valve body 1, a guide cylinder 4 and a valve core cylinder 6, a water inlet 2 and a water outlet 3 are provided at two ends of the valve body 1, the guide cylinder 4 is fixedly installed in the valve body 1, and the guide cylinder 4 is installed in the same manner as the flow regulating and pressure regulating valve in the prior art, i.e., a guide sleeve (not shown in the figure) is fixedly installed at the outer side of the guide cylinder 4, the end of the guide sleeve passes through an annular flow passage 5 formed between the guide cylinder 4 and the valve body 1 and is placed outside the valve body 1, a rotating shaft 10 is rotatably installed in the guide sleeve, and the rotating shaft 10 serves as a driving member for the flow regulating and pressure regulating valve to perform telescopic regulation on the valve core cylinder.
The draft tube 4 is close to one end opening of delivery port 3, and 6 axial slidable of valve core section of thick bamboo installs in the draft tube 4 and lie in this opening one side, and the outer end fixed mounting of valve core section of thick bamboo 6 has the piston 13 that is used for opening and close delivery port 3 to valve body 1, drives piston 13 and 6 common axial slip along draft tube 4 of valve core section of thick bamboo through pivot 10, and then realizes opening and close of piston 13 to delivery port 3, and the indentation distance through control piston 13 is in order to realize the aperture regulation to delivery port 3 department simultaneously, and then adjusts water flow and velocity to going out water. A second seal ring 8 is fitted around the outer peripheral side of the piston 13, and the second seal ring 8 seals the water outlet 3 when the valve is closed.
Inlay on the 4 open-ended interior anchor rings of draft tube and be equipped with first sealing ring 7, first sealing ring 7 presses on the outer wall of valve core section of thick bamboo 6, and then prevents that the water in the annular flow path 5 from getting into in the draft tube 4, the annular 9 of inside undergauge is seted up to the periphery of valve core section of thick bamboo 6, in the 4 open-ended interior anchor rings of draft tube 9 annular 9 to play spacing guide effect to the valve core section of thick bamboo 6.
In this embodiment, specifically, the inner end of the rotating shaft 10 extends into the guide shell 4, a rocker arm 11 is fixedly mounted on the rotating shaft 10, an end of the rocker arm 11 is hinged to a connecting rod 12, and the other end of the connecting rod 12 is hinged to an end surface of the valve core shell 6. When the rotating shaft 10 rotates, the rocker arm 11 is driven to rotate, and the valve core cylinder 6 is pushed and pulled through the connecting rod 12, so that the valve core cylinder 6 slides axially.
The outer end face of the piston 13 is provided with a flow-limiting cover 14, a plurality of flow-limiting holes 15 are uniformly formed in the ring face of the flow-limiting cover 14, and the flow-limiting holes 15 are strip-shaped. When the valve is opened, water is jetted out from the center of the flow-limiting cover 14 through the flow-limiting hole 15, so that the impact of the water flow on a connecting pipeline is reduced.
In the adjusting process of the valve, the pressure of a water inlet 2 of the valve is always greater than the pressure of a water outlet 3, in order to perform steady flow buffering on an annular flow passage 5 in the valve body 1 and avoid the impact in the valve caused by overlarge pressure difference in the valve body 1 when a valve core cylinder 6 is adjusted, a flow limiting device is assembled in the annular flow passage 5.
Referring to fig. 2, 3 and 4, the current limiting device includes a ring seat 16 and an annular rotor 20, the ring seat 16 is fixedly installed in the annular flow channel 5, a central hole 19 for the draft tube 4 to pass through is formed in the center of the ring seat 16, an annular blind groove is formed in one end of the ring seat 16, a plurality of first through holes 18 are circumferentially formed in the bottom of the ring seat 16, the first through holes 18 are communicated with the annular blind groove formed in the ring seat 16, the annular rotor 20 is rotatably installed in the annular blind groove, second through holes 21 corresponding to the first through holes 18 in the same number and size are uniformly formed in the annular rotor 20, when the second through holes 21 rotate along with the annular rotor 20, the annular displacement is realized, the overlapping area of the second through holes 21 and the first through holes 18 is adjusted, and the flow speed and the flow stabilization are further realized.
Preferably, the second through hole 21 is rotatably mounted with a flow stabilizing piece 22, the flow stabilizing piece 22 is provided with a shaft 23, and when the overlapping area of the second through hole 21 and the first through hole 18 is continuously adjusted, the pressure in the second through hole 21 is also continuously changed, and through the rotation setting of the flow stabilizing piece 22, the bottom of the ring seat 16 is prevented from being impacted during the adjustment process.
At least two arc walls have been seted up to annular rotor 20's periphery side, and this arc wall forms the seal groove with ring seat 16 jointly, and the spacer 25 is installed to the intermediate position that lies in the arc wall on annular rotor 20, and first slot portion 24 and second slot portion 27 are separated into with the seal groove to spacer 25, are provided with reset spring 26 in the second slot portion 27, fixed mounting has the feed liquor pipe 17 with first slot portion 24 intercommunication on the ring seat 16, and the other end of feed liquor pipe 17 is connected near the position of water inlet 2 on with valve body 1. It should be reminded that in this embodiment, first slot part 24 and second slot part 27 ring anticlockwise distribute, when the water inlet 2 of annular runner 5 and delivery port 3 formed pressure differential, the water of water inlet 2 department pours into first slot part 24 into through feed liquor pipe 17, and then promotes spacer 25 to realize the rotation of annular rotor 20, and further realize the self-adaptation stationary flow, after the rivers in annular runner 5 are steady, under the effect of reset spring 26, annular rotor 20 resets, at this moment, first through-hole 18 and second through-hole 21 coincide completely. The flow rate in the valve body 1 reaches the maximum.
Modifications and variations of the present invention are within the scope of the claims and are not limited by the disclosure of the embodiments.
Claims (6)
1. The utility model provides a pressure regulating valve of shunting, includes valve body, draft tube and a case section of thick bamboo, and the both ends of valve body have water inlet and delivery port, and draft tube fixed mounting forms annular flow channel in the valve body, and one side opening of draft tube, case section of thick bamboo axial slidable mounting draft tube are interior and lie in the opening part, and the outer end fixed mounting of case section of thick bamboo has the piston that is used for opening and close the delivery port of valve body, its characterized in that: the annular runner is internally equipped with a current limiting device, the current limiting device comprises a ring seat and an annular rotor, the ring seat is fixedly installed in the annular runner, an annular blind groove is formed in one end of the ring seat, a plurality of first through holes are formed in the annular direction of the bottom of the ring seat, the first through holes are communicated with the annular blind groove formed in the ring seat, the annular rotor is rotatably installed in the annular blind groove, second through holes which correspond to the first through holes in the same number and in the same size are uniformly formed in the annular direction of the annular rotor, and the second through holes are rotated along with the annular rotor to realize annular displacement and adjust the coincidence area of the second through holes and the first through holes.
2. The flow regulating pressure regulating valve according to claim 1, wherein: and a flow stabilizing piece is rotatably arranged in the second through hole, and a shaft piece is arranged on the flow stabilizing piece.
3. The flow regulating pressure regulating valve according to claim 1, wherein: at least two arc walls have been seted up to the periphery side of annular rotor, and this arc wall forms the seal groove with the ring seat jointly, and the spacer is installed to the intermediate position that lies in the arc wall on the annular rotor, and first slot portion and second slot portion are separated into with the seal groove to the spacer, are provided with reset spring in the second slot portion, fixed mounting has the feed liquor pipe with first slot portion intercommunication on the ring seat, and the other end of feed liquor pipe is connected near the position of water inlet on with the valve body.
4. The flow regulating pressure regulating valve according to claim 1, wherein: and a first sealing ring is embedded on the inner ring surface of the opening of the guide cylinder, the first sealing ring is pressed against the outer wall of the valve core cylinder, and a second sealing ring is embedded on the outer peripheral side of the piston.
5. The flow regulating pressure regulating valve according to claim 1, wherein: the periphery of the valve core cylinder is provided with a ring groove which is inwardly reduced in diameter, and the inner ring surface of the opening of the guide cylinder is embedded into the ring groove.
6. The flow regulating pressure regulating valve according to claim 1, wherein: the outer end face of the piston is provided with a flow-limiting cover, a plurality of flow-limiting holes are uniformly formed in the ring face of the flow-limiting cover, and the flow-limiting holes are strip-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111063656.4A CN113719658B (en) | 2021-09-10 | 2021-09-10 | Flow-regulating pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111063656.4A CN113719658B (en) | 2021-09-10 | 2021-09-10 | Flow-regulating pressure regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113719658A true CN113719658A (en) | 2021-11-30 |
| CN113719658B CN113719658B (en) | 2024-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111063656.4A Active CN113719658B (en) | 2021-09-10 | 2021-09-10 | Flow-regulating pressure regulating valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN113719658B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4327757A (en) * | 1979-07-20 | 1982-05-04 | Machinefabriek Mokveld B.V. | Control valve |
| US4638832A (en) * | 1978-05-16 | 1987-01-27 | Mokveld Valves Bv. | Nonreturn piston slide valve |
| JP2002215243A (en) * | 2001-01-16 | 2002-07-31 | Kurimoto Ltd | Automatic pressure control valve |
| US20030196698A1 (en) * | 2002-04-17 | 2003-10-23 | Metal Industries Research & Development Centre | Axial flow control valve |
| WO2008151565A1 (en) * | 2007-06-11 | 2008-12-18 | Yanwei Chi | A pressure control valve |
| CN205118348U (en) * | 2015-11-09 | 2016-03-30 | 五洲阀门有限公司 | Axial compressor check valve |
| KR20160072556A (en) * | 2014-12-15 | 2016-06-23 | 동아대학교 산학협력단 | Stopper Check Valve |
| CN205559971U (en) * | 2016-02-03 | 2016-09-07 | 石家庄三环阀门股份有限公司 | Modular pressure regulating valves of making an uproar falls in damping |
| CN205715868U (en) * | 2016-04-21 | 2016-11-23 | 福建西河卫浴科技有限公司 | A kind of double adjustable type current-limiting apparatus |
| CN107061777A (en) * | 2016-02-10 | 2017-08-18 | Vag阀门有限公司 | Regulation or blocking device |
| WO2018130422A1 (en) * | 2017-01-11 | 2018-07-19 | Truttenbach Asset Management Gbr (Vertretungsberechtigter Gesellschafter: Andreas Truttenbach, 77866 Rheinau) | Axial control valve for controlling the volume flow in a gas line |
| CN210566632U (en) * | 2019-09-18 | 2020-05-19 | 沪航科技集团有限公司 | Flow-regulating pressure-regulating valve |
| US20200240533A1 (en) * | 2019-01-30 | 2020-07-30 | Fisher Jeon Gas Equipment (Chengdu) Co., Ltd. | Balance structure for a regulator |
| CN111828692A (en) * | 2020-08-11 | 2020-10-27 | 中国水利水电科学研究院 | Differential pressure runner air valve for preventing water hammer and water hammer preventing method |
| CN111895098A (en) * | 2020-07-10 | 2020-11-06 | 陕西省引汉济渭工程建设有限公司 | Throttling device for flow-regulating pressure-regulating valve |
-
2021
- 2021-09-10 CN CN202111063656.4A patent/CN113719658B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4638832A (en) * | 1978-05-16 | 1987-01-27 | Mokveld Valves Bv. | Nonreturn piston slide valve |
| US4327757A (en) * | 1979-07-20 | 1982-05-04 | Machinefabriek Mokveld B.V. | Control valve |
| JP2002215243A (en) * | 2001-01-16 | 2002-07-31 | Kurimoto Ltd | Automatic pressure control valve |
| US20030196698A1 (en) * | 2002-04-17 | 2003-10-23 | Metal Industries Research & Development Centre | Axial flow control valve |
| WO2008151565A1 (en) * | 2007-06-11 | 2008-12-18 | Yanwei Chi | A pressure control valve |
| KR20160072556A (en) * | 2014-12-15 | 2016-06-23 | 동아대학교 산학협력단 | Stopper Check Valve |
| CN205118348U (en) * | 2015-11-09 | 2016-03-30 | 五洲阀门有限公司 | Axial compressor check valve |
| CN205559971U (en) * | 2016-02-03 | 2016-09-07 | 石家庄三环阀门股份有限公司 | Modular pressure regulating valves of making an uproar falls in damping |
| CN107061777A (en) * | 2016-02-10 | 2017-08-18 | Vag阀门有限公司 | Regulation or blocking device |
| CN205715868U (en) * | 2016-04-21 | 2016-11-23 | 福建西河卫浴科技有限公司 | A kind of double adjustable type current-limiting apparatus |
| WO2018130422A1 (en) * | 2017-01-11 | 2018-07-19 | Truttenbach Asset Management Gbr (Vertretungsberechtigter Gesellschafter: Andreas Truttenbach, 77866 Rheinau) | Axial control valve for controlling the volume flow in a gas line |
| US20200240533A1 (en) * | 2019-01-30 | 2020-07-30 | Fisher Jeon Gas Equipment (Chengdu) Co., Ltd. | Balance structure for a regulator |
| CN210566632U (en) * | 2019-09-18 | 2020-05-19 | 沪航科技集团有限公司 | Flow-regulating pressure-regulating valve |
| CN111895098A (en) * | 2020-07-10 | 2020-11-06 | 陕西省引汉济渭工程建设有限公司 | Throttling device for flow-regulating pressure-regulating valve |
| CN111828692A (en) * | 2020-08-11 | 2020-10-27 | 中国水利水电科学研究院 | Differential pressure runner air valve for preventing water hammer and water hammer preventing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113719658B (en) | 2024-06-18 |
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