CN112879633B - Mechanical pilot type safe Y-shaped water attack relief valve directly driven by vane motor - Google Patents
Mechanical pilot type safe Y-shaped water attack relief valve directly driven by vane motor Download PDFInfo
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- CN112879633B CN112879633B CN202110174162.7A CN202110174162A CN112879633B CN 112879633 B CN112879633 B CN 112879633B CN 202110174162 A CN202110174162 A CN 202110174162A CN 112879633 B CN112879633 B CN 112879633B
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- vane motor
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- external thread
- oil
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- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
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- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
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- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
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- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention relates to the technical field of water hammer relief valves, in particular to a mechanical pilot type safe Y-shaped water hammer relief valve directly driven by a vane motor, which comprises a hand wheel, the vane motor, a valve cover, a mechanical pilot valve, a special-shaped external thread plug and a Y-shaped main valve body, wherein the hand wheel is connected with the vane motor through a bolt; one end of the special-shaped external thread plug sequentially penetrates through the blade motor and the valve cover from top to bottom, extends into the Y-shaped main valve body and is in sealing fit with the Y-shaped main valve body, the special-shaped external thread plug is rotatably connected with the valve cover, and the blade motor is used for driving the special-shaped external thread plug to rotate; the inlet of the Y-shaped main valve body is connected to the oil inlet of the mechanical pilot valve through a first stop valve, and the oil outlet of the mechanical pilot valve is connected to the oil outlet of the Y-shaped main valve body; two oil ports of the vane motor are respectively connected to two working ports of the mechanical pilot valve through pipelines. The invention provides a mechanical pilot type safe Y-shaped water hammer relief valve directly driven by a vane motor, which solves the problem that the conventional Y-shaped water hammer relief valve cannot automatically relieve pressure.
Description
Technical Field
The invention relates to the technical field of water hammer relief valves, in particular to a mechanical pilot type safe Y-shaped water hammer relief valve directly driven by a vane motor.
Background
In a long-distance petroleum pipeline, water hammer can be caused by conditions of accidental pump stop or abnormal opening and closing of a valve, and pipe explosion accidents caused by local overpressure in the pipeline can be caused. In order to ensure safe operation of long oil pipelines and associated equipment, surge relief valves are typically used to relieve surge pressure.
When water hammer occurs in the pipeline, the pressure release valve can be quickly opened and releases high-pressure medium, so that the pressure of the pipeline is restored to a normal range, and the aim of protecting the pipeline and equipment in the pipeline is fulfilled. Therefore, the opening speed of the pressure release valve in the water hammer is of great significance to the safe operation of the whole pipeline.
At present, the traditional water hammer pressure relief valve mainly comprises three structural forms of an angle type structure, an axial flow type structure and a Y-type structure. The normal action of the main valve is ensured by the pressure change in the valve cavity of the main valve and the spring of the main valve in principle. It has the following disadvantages:
1. the main valve cavity is communicated with the front pipeline and the rear pipeline through the pilot valve, liquid in the main valve cavity needs to be discharged during action, the liquid is limited by the structure of the pilot valve and the diameter of the pressure guiding pipe, and the liquid discharging speed in the main valve cavity is low, so that the main valve cannot be opened quickly.
2. Oil liquid needs to flow through the main valve cavity, so the requirement on a liquid medium is high, and a filter needs to be installed, so that the traditional water hammer pressure release valve can only be used for a finished oil long delivery pipeline, and the application scene of the traditional water hammer pressure release valve is limited.
3. Because of the existence of the main valve spring, the valve core vibrates during working, the abrasion of the valve core is aggravated, and the service life is short.
Disclosure of Invention
The invention provides a mechanical pilot-operated type safe Y-shaped water hammer pressure relief valve directly driven by a vane motor, which aims to solve the problem that the conventional Y-shaped water hammer pressure relief valve cannot automatically relieve pressure.
The technical scheme for solving the problems is as follows: a mechanical pilot type safety Y-shaped water hammer relief valve directly driven by a vane motor comprises a hand wheel, the vane motor, a valve cover, a mechanical pilot valve and a Y-shaped main valve body;
the bottom of the hand wheel is provided with a special-shaped external thread plug, one end of the special-shaped external thread plug sequentially penetrates through the vane motor and the valve cover from top to bottom, extends into the Y-shaped main valve body and is in sealing fit with the Y-shaped main valve body, the special-shaped external thread plug is rotatably connected with the valve cover, and the vane motor is used for driving the special-shaped external thread plug to rotate;
an included angle between the special-shaped external thread plug and the axis of the oil inlet of the Y-shaped main valve body is larger than 90 degrees;
the inlet of the Y-shaped main valve body is connected to the oil inlet of the mechanical pilot valve through a first stop valve, and the oil outlet of the mechanical pilot valve is connected to the oil outlet of the Y-shaped main valve body; two oil ports of the vane motor are respectively connected to two working ports of the mechanical pilot valve through pipelines, and a second stop valve is arranged between the two pipelines.
Preferably, the vane motor includes an upper cavity and a lower cavity; the vane motor comprises an upper cavity and a lower cavity; the upper cavity and the lower cavity are both provided with oil ports, and the two oil ports are symmetrically arranged relative to the axis of the blade motor;
the oil distribution device is characterized in that an upper oil distribution disc, a stator ring and a lower oil distribution disc are sequentially arranged in a containing cavity formed by the lower cavity and the upper cavity, a rotor is arranged inside the stator ring, and a plurality of blades are uniformly distributed on the outer wall of the rotor.
Preferably, the rotor is sleeved on the outer wall of the special-shaped external thread plug and is connected with the special-shaped external thread plug through a spline.
Preferably, the valve cover comprises a sealing end cover and a supporting cylinder, threads are formed in two ends of the supporting cylinder, one end of the supporting cylinder is connected with the special-shaped external thread plug through an internal thread, and the other end of the supporting cylinder is connected with the sealing end cover through an external thread.
Preferably, a first sealing ring is arranged between the outer wall of the special-shaped external thread plug and the inner wall of the supporting cylinder; the supporting cylinder is connected with the Y-shaped main valve body through threads, and a second sealing ring is installed at the meshing position of the supporting cylinder and the inner threads of the Y-shaped main valve body.
Preferably, the hand wheel is connected with the special-shaped external thread plug through a nut and a gasket.
Preferably, the lower oil distribution pan is sealed by a sealing ring at the contact with the lower cavity.
Preferably, the upper cavity is connected with the lower cavity through a bolt and sealed through a sealing ring.
Compared with the prior art, the invention has the beneficial effects that:
1) The invention can realize the purpose of automatic pressure relief through the mechanical pilot valve, and can protect an oil way through manually operating the stop valve when the valve body fails.
2) The invention has low requirement on the liquid medium, allows a certain amount of impurities to exist in the liquid medium, and widens the application scene of the water hammer relief valve.
3) The manual operation device of the water hammer relief valve is arranged, and when the mechanical pilot valve fails, the normal work of the water hammer relief valve can be guaranteed in a manual operation mode.
4) The mechanical pilot valve is not connected with the main valve body but directly connected with the oil inlet and outlet pipes, so that liquid in the main valve cavity does not need to be discharged during action, the mechanical pilot valve is not limited by the structure of the mechanical pilot valve and the diameter of the pressure leading pipe during working, the liquid discharge speed in the main valve cavity is high, and the main valve body can be quickly opened.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a vane motor structure.
FIG. 3 is a schematic diagram of the opening of the main valve spool.
In the figure: 1. y type main valve body, 2, blade motor, 21, lower cavity, 22, lower oil distribution disc, 23, stator ring, 24, rotor, 25, blade, 26, upper oil distribution disc, 27, upper cavity, 3, hand wheel, 4, gasket, 5, nut, 6, sealing end cover, 7, first sealing ring, 8, supporting cylinder, 9, second sealing ring, 10, special-shaped external thread choke plug, 11, second stop valve, 12, mechanical pilot valve, 13, first stop valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Example 1: a mechanical guide type safe Y-shaped water hammer relief valve directly driven by a vane motor refers to fig. 1 and comprises a hand wheel 3, a vane motor 2, a sealing end cover 6, a supporting cylinder 8 and a Y-shaped main valve body 1 which are sequentially arranged from top to bottom.
The bottom of the hand wheel 3 is provided with a special-shaped external thread plug 10, one end of the special-shaped external thread plug 10 sequentially penetrates through the vane motor 2, the sealing end cover 6 and the supporting cylinder 8 from top to bottom, extends into the Y-shaped main valve body 1 and is in sealing fit with the Y-shaped main valve body 1, the special-shaped external thread plug 10 is rotatably connected with the valve cover, and the vane motor 2 is used for driving the special-shaped external thread plug 10 to rotate. A second sealing ring 9 is arranged between the supporting cylinder 8 and the Y-shaped main valve body 1, both ends of the supporting cylinder 8 are provided with threads, an internal thread part at one end of the supporting cylinder 8 is meshed with and provided with a special-shaped external thread plug 10, a first sealing ring 7 is arranged on the outer wall of the special-shaped external thread plug 10 and inside the supporting cylinder 8, and a sealing end cover 6 is arranged at the upper ends of the first sealing ring 7 and the special-shaped external thread plug 10; the upper end of the special-shaped external thread plug 10 is provided with a hand wheel 3, and the hand wheel 3 is connected with the special-shaped external thread plug 10 through a bolt 5 and a gasket 4.
The included angle between the special-shaped external thread plug 10 and the axis of the oil inlet of the Y-shaped main valve body 1 is larger than 90 degrees, so that the impact force of water impact on the valve body and the valve rod can be reduced.
An inlet of the Y-shaped main valve body 1 is connected to an oil inlet of a mechanical pilot valve 12 through a first stop valve 13, and an oil outlet of the mechanical pilot valve 12 is connected to an oil outlet of the Y-shaped main valve body 1; two oil ports of the vane motor 2 are respectively connected to two working ports of the mechanical pilot valve 2 through pipelines, and a second stop valve 11 is installed between the two pipelines.
Referring to fig. 2, the vane motor 2 includes an upper cavity 27 and a lower cavity 21; the vane motor 2 includes an upper cavity 27 and a lower cavity 21; the upper cavity 27 and the lower cavity 21 are both provided with oil ports, and the two oil ports are symmetrically arranged relative to the axis of the vane motor 2; an upper oil distribution disc 26, a stator ring 23 and a lower oil distribution disc 22 are sequentially arranged in the accommodating cavity formed by the lower cavity 21 and the upper cavity 27 from top to bottom, a rotor 24 is arranged inside the stator ring 23, and a plurality of blades 25 are uniformly distributed on the outer wall of the rotor 24.
The rotor 24 is sleeved on the outer wall of the special-shaped external thread plug 10 and is connected with the special-shaped external thread plug 10 through a spline; the lower oil distribution disc 22 is sealed by a sealing ring at the contact part with the lower cavity body 21; the upper chamber 27 is bolted to the lower chamber 21 and sealed by a gasket.
The working principle of the invention is as follows:
in the process of normally conveying oil in the pipeline, the water hammer relief valve is in a closed state, when the water hammer phenomenon occurs in the pipeline, the oil at the position where the water hammer occurs is compressed due to the volume, and the oil pressure rapidly rises and is transmitted along the pipeline. The inlet end of the Y-shaped main valve body 1 is connected with a main oil pipeline, and the outlet end of the Y-shaped main valve body is connected with an oil tank and used for receiving oil discharged by pressure relief.
Normally, the first cut valve 13 is opened and the second cut valve 11 is closed; the mechanical pilot valve 12 is set with a certain oil pressure threshold. When the oil pressure at the inlet of the Y-shaped main valve body 1 is low and does not reach the set oil pressure threshold, the mechanical pilot valve 12 works in the left position.
When the oil pressure at the inlet with the water hammer phenomenon exceeds the oil pressure threshold value, the high-pressure oil pressure can drive the mechanical pilot valve 12 to change from the left position to the right position, the high-pressure oil enters the mechanical pilot valve 12 from the inlet of the Y-shaped main valve body 1 after passing through the first stop valve 13, flows out of the mechanical pilot valve 12, enters the oil port of the upper cavity 27 of the vane motor 2, passes through the oil port of the lower cavity 21 of the vane motor 2, and then flows back to the outlet oil way of the Y-shaped main valve body 1 through the oil outlet of the mechanical pilot valve 12, and the pressure relief is completed. When hydraulic oil passes through the vane motor 2, the rotor 24 of the vane motor 2 is pushed to rotate anticlockwise, the spline on the rotor 24 drives the special-shaped external thread plug 10 to rotate anticlockwise, the special-shaped external thread plug is made to ascend under the action of a lead screw formed between the special-shaped external thread plug 10 and the supporting cylinder 8, an oil inlet of the Y-shaped main valve body 1 is made to be communicated with an oil outlet, and the oil flows to the oil outlet from the oil inlet, so that the oil pressure in a pipeline is lowered.
When the mechanical pilot valve 12 fails, the first stop valve 13 can be manually closed and the second stop valve 11 can be opened, and the special-shaped external thread plug 10 is displaced upwards in the support cylinder 8 by rotating the hand wheel 3, so that the oil inlet of the Y-shaped main valve body 1 is communicated with the oil outlet, and high-pressure oil flows from the oil inlet to the oil outlet, so that the oil pressure in the pipeline is reduced.
When the pressure relief is completed, the pressure of the oil path is smaller than the oil pressure threshold, the mechanical pilot valve 12 is in the left position, the high-pressure oil enters the mechanical pilot valve 12 from the inlet of the Y-shaped main valve body 1 through the first stop valve 13, flows out of the mechanical pilot valve 12, enters the oil port of the lower cavity 21 of the vane motor 2, passes through the oil port of the upper cavity 27 of the vane motor 2, and then flows back to the outlet oil path of the Y-shaped main valve body 1 through the oil outlet of the mechanical pilot valve 12. When hydraulic oil passes through the vane motor 2, the rotor 24 of the vane motor 2 is pushed to rotate clockwise, the spline on the rotor 24 drives the special-shaped external thread plug 10 to rotate clockwise, and the special-shaped external thread plug 10 descends under the action of a lead screw formed between the special-shaped external thread plug 10 and the supporting cylinder 8, so that a valve in the Y-shaped main valve body 1 is closed, and oil is prevented from flowing out.
When the mechanical pilot valve 12 fails, the first stop valve 13 can be manually closed, the second stop valve 11 can be opened, the special-shaped external thread plug 10 can be displaced downwards in the support cylinder 8 by rotating the hand wheel 3, the valve is closed, and the pressure relief is stopped.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related system fields are also included in the scope of the present invention.
Claims (7)
1. The utility model provides a mechanical guide formula safety Y type water hammer relief valve that vane motor directly driven which characterized in that: comprises a hand wheel (3), a vane motor (2), a valve cover, a mechanical pilot valve (12) and a Y-shaped main valve body (1);
an external thread plug (10) is arranged at the bottom of the hand wheel (3), one end of the external thread plug (10) sequentially penetrates through the vane motor (2) and the valve cover from top to bottom, extends into the Y-shaped main valve body (1) and is in sealing fit with the Y-shaped main valve body (1), the external thread plug (10) is rotatably connected with the valve cover, and the vane motor (2) is used for driving the external thread plug (10) to rotate;
an included angle between the external thread plug (10) and the axis of the oil inlet of the Y-shaped main valve body (1) is larger than 90 degrees;
an oil inlet of the Y-shaped main valve body (1) is connected to an oil inlet of the mechanical pilot valve (12) through a first stop valve (13), and an oil outlet of the mechanical pilot valve (12) is connected to an oil outlet of the Y-shaped main valve body (1); two oil ports of the vane motor (2) are respectively connected to two working ports of the mechanical pilot valve (1) through pipelines, and a second stop valve (11) is arranged between the two pipelines;
the vane motor (2) comprises an upper cavity (27) and a lower cavity (21); the upper cavity (27) and the lower cavity (21) are both provided with oil ports, and the two oil ports are symmetrically arranged relative to the axis of the blade motor (2);
an upper oil distribution disc (26), a stator ring (23) and a lower oil distribution disc (22) are sequentially arranged in an accommodating cavity formed by the lower cavity (21) and the upper cavity (27), a rotor (24) is arranged inside the stator ring (23), and a plurality of blades (25) are uniformly distributed on the outer wall of the rotor (24).
2. The mechanical pilot type safety Y-shaped water hammer relief valve directly driven by the vane motor as claimed in claim 1, is characterized in that: the rotor (24) is sleeved on the outer wall of the external thread plug (10) and is connected with the external thread plug (10) through a spline.
3. The mechanical pilot operated type safety Y-shaped water hammer relief valve directly driven by the vane motor as claimed in claim 2, wherein: the valve gap includes a seal end cover (6) and a support section of thick bamboo (8), the both ends of a support section of thick bamboo (8) are all seted up threadedly, the one end of a support section of thick bamboo (8) pass through the internal thread with external screw thread end cap (10) are connected, and the other end passes through the external screw thread and is connected with seal end cover (6).
4. The mechanical pilot operated type safety Y-shaped water hammer relief valve directly driven by the vane motor as claimed in claim 3, wherein: a first sealing ring (7) is arranged between the outer wall of the external thread plug (10) and the inner wall of the supporting cylinder (8); the support cylinder (8) is in threaded connection with the Y-shaped main valve body (1), and a second sealing ring (9) is installed at the meshing position of the support cylinder (8) and the inner thread of the Y-shaped main valve body (1).
5. The mechanical pilot type safety Y-shaped water hammer relief valve directly driven by the vane motor as claimed in claim 4, is characterized in that: the hand wheel (3) is connected with the external thread plug (10) through a nut (5) and a gasket (4).
6. The mechanical pilot type safety Y-shaped water hammer relief valve directly driven by the vane motor as claimed in claim 5, is characterized in that: the contact part of the lower oil distribution disc (22) and the lower cavity body (21) is sealed by a sealing ring.
7. The mechanical pilot type safety Y-shaped water hammer relief valve directly driven by the vane motor as claimed in claim 6, is characterized in that: the upper cavity (27) and the lower cavity (21) are connected through bolts and sealed through sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110174162.7A CN112879633B (en) | 2021-02-09 | 2021-02-09 | Mechanical pilot type safe Y-shaped water attack relief valve directly driven by vane motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110174162.7A CN112879633B (en) | 2021-02-09 | 2021-02-09 | Mechanical pilot type safe Y-shaped water attack relief valve directly driven by vane motor |
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| Publication Number | Publication Date |
|---|---|
| CN112879633A CN112879633A (en) | 2021-06-01 |
| CN112879633B true CN112879633B (en) | 2023-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110174162.7A Active CN112879633B (en) | 2021-02-09 | 2021-02-09 | Mechanical pilot type safe Y-shaped water attack relief valve directly driven by vane motor |
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| CN (1) | CN112879633B (en) |
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| CN201354872Y (en) * | 2009-02-26 | 2009-12-02 | 王华铭 | High-temperature resistant Y-shaped safety relief valve used for aluminium manufacturer molten salt pipeline |
| CN101608701A (en) * | 2008-06-20 | 2009-12-23 | 深圳市中科力函热声技术工程研究中心有限公司 | Rotary valve |
| CN201747409U (en) * | 2010-08-06 | 2011-02-16 | 佳木斯大学 | Vane motor with rotary oil distribution device |
| CN203421240U (en) * | 2013-07-18 | 2014-02-05 | 中国航天科技集团公司第六研究院第十一研究所 | Y type pilot-operated type water-attack pressure release valve system |
| CN204493977U (en) * | 2015-03-11 | 2015-07-22 | 李云昌 | The built-in angie type surge reliever of a kind of dual control |
| CN105545860A (en) * | 2016-01-20 | 2016-05-04 | 浙江大学 | Hydraulic control reversing rotating valve |
| CN207848441U (en) * | 2018-01-19 | 2018-09-11 | 浙江金锋自动化仪表有限公司 | Pilot operated pressure relief valve |
| CN109340041A (en) * | 2018-11-20 | 2019-02-15 | 兰州理工大学 | A kind of sliding-vane motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10697558B2 (en) * | 2013-08-02 | 2020-06-30 | Daniel Measurement And Control, Inc. | Flow control system and control valve having closure assistance |
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2021
- 2021-02-09 CN CN202110174162.7A patent/CN112879633B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608701A (en) * | 2008-06-20 | 2009-12-23 | 深圳市中科力函热声技术工程研究中心有限公司 | Rotary valve |
| CN201354872Y (en) * | 2009-02-26 | 2009-12-02 | 王华铭 | High-temperature resistant Y-shaped safety relief valve used for aluminium manufacturer molten salt pipeline |
| CN201747409U (en) * | 2010-08-06 | 2011-02-16 | 佳木斯大学 | Vane motor with rotary oil distribution device |
| CN203421240U (en) * | 2013-07-18 | 2014-02-05 | 中国航天科技集团公司第六研究院第十一研究所 | Y type pilot-operated type water-attack pressure release valve system |
| CN204493977U (en) * | 2015-03-11 | 2015-07-22 | 李云昌 | The built-in angie type surge reliever of a kind of dual control |
| CN105545860A (en) * | 2016-01-20 | 2016-05-04 | 浙江大学 | Hydraulic control reversing rotating valve |
| CN207848441U (en) * | 2018-01-19 | 2018-09-11 | 浙江金锋自动化仪表有限公司 | Pilot operated pressure relief valve |
| CN109340041A (en) * | 2018-11-20 | 2019-02-15 | 兰州理工大学 | A kind of sliding-vane motor |
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| CN112879633A (en) | 2021-06-01 |
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