CN111237531A - Straight stroke gas-liquid linkage actuating mechanism suitable for quick isolating valve - Google Patents
Straight stroke gas-liquid linkage actuating mechanism suitable for quick isolating valve Download PDFInfo
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- CN111237531A CN111237531A CN201811433809.8A CN201811433809A CN111237531A CN 111237531 A CN111237531 A CN 111237531A CN 201811433809 A CN201811433809 A CN 201811433809A CN 111237531 A CN111237531 A CN 111237531A
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- quick
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- valve block
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- valve
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Classifications
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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
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1433—End caps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
Abstract
The invention belongs to the valve control technology, and particularly relates to a straight-stroke gas-liquid linkage actuating mechanism suitable for a quick isolating valve. The principle of independent pressure accumulation is adopted, the outlet of an oil pump is connected to the oil side of a piston type energy accumulator through a pipeline, hydraulic oil in the piston type energy accumulator is locked through a one-way valve, an oil port of the piston type energy accumulator is connected with two paths of quick-closing oil inlet valve blocks through pipelines, gas in the piston type energy accumulator serves as an air spring which never fails and serves as a power source of quick-closing action, and pressure accumulation is not required to be repeatedly performed in the subsequent slow opening and closing process of a valve after pressure accumulation is performed only once.
Description
Technical Field
The invention belongs to the valve control technology, and particularly relates to a linkage actuating mechanism of an isolation valve.
Background
The driving types of the actuating mechanism of the quick isolating valve are mainly divided into two types: media self-driven and gas-liquid driven. The medium self-driving power source is sourced from the system rather than from the outside. The rapid isolation valve of the million kilowatt pressurized water reactor nuclear power station is mainly of a large-caliber gate valve structure, an actuating mechanism needs to meet the reliable action requirements of long stroke (more than or equal to 600mm), high thrust (more than or equal to 1000KN), rapid closing (less than or equal to 5s), slow opening and slow closing of a main steam isolation valve under different working conditions, and the existing gas-liquid driving type becomes the mainstream type of the actuating mechanism of the rapid isolation valve.
After the actuating mechanism is quickly closed, the impact on devices, instruments and meters and the like is easily caused. Meanwhile, the problems of shock resistance, noise, aging, irradiation resistance, electromagnetic compatibility, safety and reliability and the like are also urgently needed to be solved.
Disclosure of Invention
The invention aims to provide a straight-stroke gas-liquid linkage actuating mechanism suitable for a quick isolating valve, which only needs to carry out pressure accumulation once, does not need to carry out pressure accumulation repeatedly in the subsequent slow opening and closing process of the valve and can meet the use requirement of a main steam isolating valve.
The technical scheme of the invention is as follows:
a straight-stroke gas-liquid linkage actuating mechanism suitable for a quick isolating valve comprises a valve support, a frame structural member and a hydraulic cylinder which are fixed above the valve support, a piston type energy accumulator which is fixedly arranged on the valve support, and an oil tank, an oil pump and a main valve block which are fixed on the frame structural member;
the two piston type energy accumulators are symmetrically arranged on two sides of the valve bracket;
the actuating mechanism also comprises a quick-closing oil inlet valve block A component and a quick-closing oil inlet valve block B component which are symmetrically and fixedly arranged at the upper ends of the two sides of the frame structural member and are communicated with the piston type energy accumulator on the corresponding side through a pipeline;
the actuating mechanism also comprises a quick-closing oil drain valve block A and a quick-closing oil drain valve block B which are arranged at the lower end of the oil tank, symmetrically fixed at the lower ends of the two sides of the frame structural member and connected with the lower cavity of the hydraulic cylinder through a pipeline;
the quick-closing oil inlet valve block A and the quick-closing oil outlet valve block A form a channel A; the fast-closing oil inlet valve block B and the fast-closing oil outlet valve block B form a channel B, and A, B channels are symmetrically arranged around the oil tank and the motor;
the oil pump is characterized in that an oil suction port of the oil pump is connected with an oil tank through a pipeline, an oil outlet of the oil pump is connected to a main valve block through a pipeline, and the main valve block is respectively connected with an upper cavity and a lower cavity of the hydraulic cylinder and the oil tank through pipelines.
The main valve block is connected with the oil side of the piston type energy accumulator through a pipeline, and the oil is filled in the piston type energy accumulator through a motor driving oil pump fixed on a frame structural member.
And a check valve is arranged on an oil side pipeline connecting the main valve block and the piston type energy accumulator to lock hydraulic oil in the piston type energy accumulator.
And the oil side pipeline of the main valve block connected with the piston type energy accumulator is provided with a pressure switch, and the main valve block is internally provided with two-position three-way electromagnetic valves which are respectively driven by a motor and switched on and off by the pressure switch.
And an inflation valve block is fixedly arranged on the frame structural member and is connected with the air sides of the two piston type energy accumulators through pipelines.
And a nitrogen pressure gauge and a pressure switch are arranged on a pipeline for connecting the inflation valve block and the piston type energy accumulator.
The frame structure on be equipped with the hinge door plant, its quantity is 4 ~ 8, every hinge door plant all passes through hinged joint, all rotates along the flange border of frame structure upper and lower extreme and opens and shut.
The hydraulic cylinder comprises a cylinder barrel and a cylinder cover which are fixedly connected, a cylinder head arranged below the cylinder barrel, a piston and a piston rod in the cylinder barrel, and the outer surface of the piston is in close contact with the inner surface of the cylinder barrel.
The piston rod is externally provided with a buffer sleeve and is positioned below the piston, the lower end of the piston rod is provided with a guide sleeve, and the guide sleeve is fixed inside the cylinder head.
The bottom of the cylinder head is provided with a check ring which is positioned below the guide sleeve and drags the guide sleeve.
The invention has the following remarkable effects:
the valve support is designed, the piston type energy accumulators are directly installed on two sides of the support, the frame structural member and the hydraulic cylinder are installed on the upper surface of the valve support, the motor and the pump are fixed on an upper flange of the valve support, all the other parts are installed in the frame structural member, and the frame structural member is installed at a lower position as much as possible, so that the size is reduced, the weight is reduced, the center of gravity is lowered, and the natural vibration frequency of the whole machine is improved.
The principle of independent pressure accumulation is adopted, the outlet of an oil pump is connected to the oil side of a piston type energy accumulator through a pipeline, hydraulic oil in the piston type energy accumulator is locked through a one-way valve, an oil port of the piston type energy accumulator is connected with two paths of quick-closing oil inlet valve blocks through pipelines, the oil outlet is connected to the upper cavity of a hydraulic cylinder through a pipeline, gas in the piston type energy accumulator serves as a gas spring which never fails and serves as a power source for quick-closing action, and pressure accumulation can be achieved only by once pressure accumulation, and the subsequent slow opening and closing process of a valve does not need to be repeated.
By adopting the design of the hinged door plate, the part ejected out of the inside of the actuating mechanism can be prevented from injuring human bodies or other equipment in case of accidents, and the assembly and disassembly are convenient.
The hydraulic control system adopts completely independent double-channel hydraulic control, meets the requirement of a single fault criterion, and simultaneously has a redundancy design to ensure the safety and reliability of functions.
The piston part is provided with a buffer structure, so that the impact force on the valve during quick closing is reduced, and the service performance and the reliability of the actuating mechanism are improved.
Drawings
FIG. 1 is a schematic view of a straight-stroke gas-liquid linkage actuator suitable for use in a quick isolation valve;
FIG. 2 is a front view of a straight stroke gas-liquid linkage actuator suitable for use with a quick isolating valve;
FIG. 3 is a schematic diagram of a dual fast-closing channel;
FIG. 4 is a schematic view of a hinged door panel;
FIG. 5 is a schematic view of a piston buffering structure of the hydraulic cylinder;
in the figure: 1. a support; 2. a frame structure; 3. a piston accumulator; 4. a hydraulic cylinder; 5. a main valve block assembly; 6. quickly closing the oil inlet valve block A; 7. quickly closing the oil inlet valve block B; 8. an inflation valve block; 9. a motor; 10. an oil pump; 11. a pressure switch; 12. an electrical junction box; 13. an oil tank; 14. quickly closing the oil drain valve block A; 15. quickly closing the oil drain valve block B; 16. an oil temperature gauge; 17. an oil pressure gauge; 18. a nitrogen pressure gauge; 19. a hinged door panel; 20. a cylinder cover; 21. a piston; 22. a buffer sleeve; 23. a piston rod; 24. a cylinder barrel; 25. a guide sleeve; 26. a cylinder head; 27. and a retainer ring.
Detailed Description
The invention is further illustrated by the accompanying drawings and the detailed description.
As shown in fig. 1 and 2, a piston accumulator 3 is fixed on each side of the valve bracket 1, and a hydraulic cylinder 4 and a frame structural member 2 are fixedly arranged above the valve bracket 1. The motor 9 and the pump 10 are respectively fixed on the upper surface and the lower surface of the flange on the valve bracket 1 through bolts. The hydraulic cylinder 4 is used for driving the isolating valve to open and close.
In addition, all other parts (including the oil tank 13) are arranged in the frame structural part 2 and are arranged at the lower position of the frame structural part 2 as much as possible, so that the volume is reduced, the weight is reduced, the center of gravity is lowered, and the natural vibration frequency of the whole machine is improved.
As shown in fig. 2 and 3, the frame structure 2 is a cylindrical frame structure, the quick-closing oil inlet valve block a assembly 6 and the quick-closing oil inlet valve block B assembly 7 are both communicated with the piston accumulator 3 on the corresponding side through pipelines and are mounted at the upper end of the frame structure 2, and the quick-closing oil inlet valve block a6 and the quick-closing oil inlet valve block B7 are respectively connected to the upper chamber of the hydraulic cylinder 4 through pipelines. The quick-closing oil drain valve block A14 and the quick-closing oil drain valve block B15 are both arranged at the lower end of the frame structural member 2 and distributed at two sides of the oil tank 13, and the quick-closing oil drain valve block A14 and the quick-closing oil drain valve block B15 are connected with the lower cavity of the hydraulic cylinder 4 through pipelines and are connected with the oil tank 13 through pipelines, so that the quick-closing action of an actuating mechanism is realized.
As shown in fig. 3, the actuator is designed with two quick-closing channels, namely a channel a composed of the quick-closing oil inlet valve block a6 and the quick-closing oil outlet valve block a 14; the fast-closing oil inlet valve block B7 and the fast-closing oil outlet valve block B15 form a channel B, a A, B channel is symmetrically arranged around the oil tank 13 and the motor 9, and the A, B channels are designed in a redundant mode, so that the reliability of the fast-closing function of the actuating mechanism is greatly improved.
As shown in fig. 1 and 2, an oil suction port of the oil pump 10 is connected to an oil tank 13 through a pipeline, an oil outlet of the oil pump 10 is connected to the main valve block 5 through a pipeline, and the main valve block 5 is connected to an upper chamber and a lower chamber of the hydraulic cylinder 4 and the oil tank 13 through pipelines, respectively.
An oil pressure gauge 17 is installed in a switch channel of the main valve block 5 and used for monitoring oil pressure, and an oil temperature gauge 16 is installed on a pipeline of the oil tank 13 and used for detecting the temperature of hydraulic oil in the oil tank 13.
The main valve block 5 is also connected with the oil side of the piston type energy accumulator 3 through a pipeline, an oil pump 10 is driven by a motor 9 to charge oil in the piston type energy accumulator 3, and hydraulic oil in the piston type energy accumulator 3 is locked through a one-way valve arranged in the pipeline so as to store high-pressure oil in the piston type energy accumulator 3. The gas in the piston type energy accumulator 3 serves as a gas spring which never fails and a power source for quick closing action, and after only once pressure accumulation is needed, the pressure accumulation is not needed to be carried out repeatedly in the opening and closing process of a subsequent valve.
An inflation valve block 8 is arranged in the frame structural member 2 and is positioned on one side of the motor 9, the inflation valve block 8 is connected with the air sides of the two piston type energy accumulators 3 through pipelines, and is connected with a nitrogen pressure gauge 18 and a pressure switch 11 through pipelines at one time. The inflation valve block 8 is provided with an inflation interface which is connected with an external air source to inflate the piston type energy accumulator 3, and the nitrogen pressure gauge 18 and the pressure switch 11 are used for monitoring the gas pressure in the piston type energy accumulator 3.
Two-position three-way electromagnetic valves are arranged in the main valve block 5 and are driven by a motor 9 to control the opening and closing of a pressure switch 11 on a pipeline of the main valve block 5.
A terminal box 12 is mounted in the frame structure 2 above the motor 9. The electric wires of the electromagnetic valve and the motor in the actuating mechanism are connected into the junction box 12, and the junction box 12 is connected with an external control cabinet through the electric wires.
As shown in fig. 4, the periphery of the frame structure 2 is designed with 6 hinged door panels 19, each hinged door panel 19 is connected to the frame structure 2 through a hinge, the hinged door panels 19 can rotate around the hinge along the circular flange edges of the upper and lower ends of the frame structure 2 to open and close, and the hinged door panels 19 are fixed on the frame structure 2 through screws after being closed. When an accident happens, the hinged door plate 19 can prevent parts popped out from the inside of the executing mechanism from injuring human bodies or other equipment, and the design scheme is more attractive and is also convenient to disassemble and assemble.
As shown in fig. 5, the hydraulic cylinder 4 is designed with a buffer structure, a cylinder barrel 24 of the hydraulic cylinder 4 is fixedly connected with the cylinder cover 20, a cylinder head 26 is installed below the cylinder barrel 24, the piston 21 and the piston rod 23 are installed in the cylinder barrel 24, and the outer surface of the piston 21 is in close contact with the inner surface of the cylinder barrel 24.
The buffer structure comprises a buffer sleeve 22 arranged outside a piston rod 23, the buffer sleeve 22 is positioned below the piston 21, and the lower end surface of the buffer sleeve 22 is processed into a conical surface. To position the piston rod 23, a guide sleeve 25 is attached to its lower end, the guide sleeve 25 being fixed inside the cylinder head 26. Meanwhile, in order to prevent the cylinder head 26 from falling, a retainer 27 is fixedly mounted at the bottom of the cylinder head 26, and the retainer 27 is positioned below the guide sleeve 25 to pull the guide sleeve 25.
When the piston 21, the buffer sleeve 22 and the piston rod 23 integrally move downwards rapidly, the conical structure of the buffer sleeve 22 is matched with the conical structure of the guide sleeve 25, so that the movement speeds of the piston 21, the buffer sleeve 22 and the piston rod 23 can be gradually reduced, and the rapid closing action of the actuating mechanism is buffered.
Claims (10)
1. A straight-stroke gas-liquid linkage actuating mechanism suitable for a quick isolating valve comprises a valve support (1), a frame structural member (2) and a hydraulic cylinder (4) which are fixed above the valve support (1), a piston type energy accumulator (3) which is fixedly arranged on the valve support (1), and an oil tank (13), an oil pump (10) and a main valve block (5) which are fixed on the frame structural member (2);
the method is characterized in that: the two piston type energy accumulators (3) are symmetrically arranged on two sides of the valve bracket (1);
the actuating mechanism also comprises a quick-closing oil inlet valve block A (6) and a quick-closing oil inlet valve block B (7), which are symmetrically and fixedly arranged at the upper ends of the two sides of the frame structural member (2) and are communicated with the piston type energy accumulator (30) at the corresponding side through a pipeline;
the actuating mechanism also comprises a quick-closing oil drain valve block A (14) and a quick-closing oil drain valve block B (15) which are arranged at the lower end of the oil tank (13), are symmetrically fixed at the lower ends of two sides of the frame structural member (2), and are connected with the lower cavity of the hydraulic cylinder (4) through pipelines;
the quick-closing oil inlet valve block A (6) and the quick-closing oil outlet valve block A (14) form a channel A; the quick-closing oil inlet valve block B (7) and the quick-closing oil outlet valve block B (15) form a channel B, and A, B channels are symmetrically arranged around the oil tank (13) and the motor (9);
an oil suction port of the oil pump (10) is connected with an oil tank (13) through a pipeline, an oil outlet of the oil pump (10) is connected with the main valve block (5) through a pipeline, and the main valve block (5) is respectively connected with an upper cavity and a lower cavity of the hydraulic cylinder (4) and the oil tank (13) through pipelines.
2. The linear gas-liquid linkage actuator suitable for the quick isolating valve as claimed in claim 1, wherein: the main valve block (5) is connected with the oil side of the piston type energy accumulator (3) through a pipeline, and an oil pump (10) is driven by a motor (9) fixed on the frame structural member (2) to charge oil in the piston type energy accumulator (3).
3. The linear gas-liquid linkage actuator suitable for the quick isolating valve as claimed in claim 2, wherein: and a check valve is arranged on an oil side pipeline connecting the main valve block (5) and the piston type energy accumulator (3) to lock hydraulic oil in the piston type energy accumulator (3).
4. The linear gas-liquid linkage actuator suitable for the quick isolating valve as claimed in claim 3, wherein: the oil side pipeline of the main valve block (5) connected with the piston type energy accumulator (3) is provided with a pressure switch (11), and the main valve block (5) is internally provided with two-position three-way electromagnetic valves which are respectively driven by a motor (9) and switched on and off the pressure switch (11).
5. The linear gas-liquid linkage actuator suitable for the quick isolating valve as claimed in claim 1, wherein: and an inflation valve block (8) is fixedly arranged on the frame structural member (2), and the inflation valve block (8) is connected with the air sides of the two piston type energy accumulators (3) through pipelines.
6. The linear gas-liquid linkage actuator suitable for the quick isolating valve as claimed in claim 5, wherein: and a nitrogen pressure gauge (18) and a pressure switch (11) are arranged on a pipeline connecting the inflation valve block (8) and the piston type energy accumulator (3).
7. The linear gas-liquid linkage actuator suitable for the quick isolating valve as claimed in claim 1, wherein: the frame structure spare (2) on be equipped with hinge door plant (19), its quantity is 4 ~ 8, every hinge door plant (19) all through hinged joint, all rotate along the flange border of frame structure spare (2) upper and lower extreme and open and shut.
8. The linear gas-liquid linkage actuator suitable for the quick isolating valve as claimed in claim 1, wherein: the hydraulic cylinder (4) comprises a cylinder barrel (24) and a cylinder cover (20) which are fixedly connected, a cylinder head (26) arranged below the cylinder barrel (24), a piston (21) and a piston rod (23) in the cylinder barrel (24), and the outer surface of the piston (21) is in close contact with the inner surface of the cylinder barrel (24).
9. The linear gas-liquid linkage actuator suitable for the quick isolating valve as claimed in claim 8, wherein: the piston rod (23) is externally provided with a buffer sleeve (22) and is positioned below the piston (21), the lower end of the piston rod (23) is provided with a guide sleeve (25), and the guide sleeve (25) is fixed inside the cylinder head (26).
10. The linear gas-liquid linkage actuator suitable for the quick isolating valve as claimed in claim 9, wherein: and a retainer ring (27) is arranged at the bottom of the cylinder head (26), and the retainer ring (27) is positioned below the guide sleeve (25) and drags the guide sleeve (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811433809.8A CN111237531A (en) | 2018-11-28 | 2018-11-28 | Straight stroke gas-liquid linkage actuating mechanism suitable for quick isolating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811433809.8A CN111237531A (en) | 2018-11-28 | 2018-11-28 | Straight stroke gas-liquid linkage actuating mechanism suitable for quick isolating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111237531A true CN111237531A (en) | 2020-06-05 |
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ID=70868704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811433809.8A Pending CN111237531A (en) | 2018-11-28 | 2018-11-28 | Straight stroke gas-liquid linkage actuating mechanism suitable for quick isolating valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN111237531A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032401A (en) * | 2020-09-24 | 2020-12-04 | 三门核电有限公司 | Control platform and method for nuclear power main steam isolation valve actuating mechanism |
| CN112145769A (en) * | 2020-09-27 | 2020-12-29 | 浙江君意文化传媒有限公司 | Special automatic valve for water eluting equipment and use method thereof |
-
2018
- 2018-11-28 CN CN201811433809.8A patent/CN111237531A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032401A (en) * | 2020-09-24 | 2020-12-04 | 三门核电有限公司 | Control platform and method for nuclear power main steam isolation valve actuating mechanism |
| CN112145769A (en) * | 2020-09-27 | 2020-12-29 | 浙江君意文化传媒有限公司 | Special automatic valve for water eluting equipment and use method thereof |
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