CN115325188A - Double-safety intelligent safety valve - Google Patents
Double-safety intelligent safety valve Download PDFInfo
- Publication number
- CN115325188A CN115325188A CN202210965072.4A CN202210965072A CN115325188A CN 115325188 A CN115325188 A CN 115325188A CN 202210965072 A CN202210965072 A CN 202210965072A CN 115325188 A CN115325188 A CN 115325188A
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- valve
- seat
- safety
- clack
- double
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- 238000004891 communication Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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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
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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
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
- Safety Valves (AREA)
Abstract
The invention provides a double-insurance intelligent safety valve which comprises a valve seat and a valve body, wherein a valve clack, a valve clack seat and a valve rod are sequentially arranged above the valve seat, a valve cap is arranged above the valve body, an auxiliary cylinder is arranged at the upper end of the valve cap, a piston rod of the auxiliary cylinder is connected with the upper end of the valve rod, and the auxiliary cylinder is connected with a three-position four-way electromagnetic reversing valve; the inner cavity of the valve seat is communicated with a pressure sensor; the auxiliary cylinder and the pressure sensor are added, the valve clack can be opened quickly by the auxiliary cylinder, the system can release pressure in time, the problem that the valve clack cannot be opened in time due to increase of friction resistance between the valve clack seat and the guide sleeve is solved, the system can release pressure quickly, and potential safety hazards are avoided.
Description
Technical Field
The invention belongs to the technical field of valve equipment, and particularly relates to a double-safety intelligent safety valve.
Background
The safety valve is an important safety accessory on pressure equipment such as a boiler, a pressure container and the like, is widely used for steam boilers, pressure pipelines, pressure containers and the like, and plays a safety protection role in a system. When the pressure in the equipment or the pipeline exceeds the set pressure of the safety valve, the safety valve automatically opens to release the pressure so as to ensure that the medium pressure in the equipment and the pipeline is below the set pressure, so that the equipment and the pipeline can normally work, the equipment is prevented from being damaged or accidents occur, and the safety valve plays a vital role in the process of protecting the equipment in view of the requirement of the pressure release of the equipment.
At present, spring type safety valves are most commonly used, and the existing spring type safety valves comprise a valve body, a valve seat, a valve clack, a valve rod and a spring, wherein the valve clack, a valve clack seat and the valve rod are sequentially arranged above the valve seat, the valve clack seat is arranged in a guide sleeve and can move up and down along the guide sleeve, the spring is sleeved outside the valve rod, and in a normal state, the valve rod pushes the valve clack seat to enable the valve clack to be attached to the valve seat under the action of the elastic force of the spring to be in a sealing state. When the pressure of medium is raised enough to overcome the spring force, the medium pushes the valve clack to move upwards, further pushes the valve clack seat to move upwards and compress the spring, the valve clack is separated from the valve seat, the valve is opened, the medium in the system is discharged outwards, and when the pressure in the system is lowered to a set value, the valve clack is closed with the valve seat again under the action of the spring force, and the valve is closed. The prior spring type safety valve has the following technical defects when in use: when the safety valve is just used, the safety valve can reach the design standard, the frictional resistance between the valve flap seat and the guide sleeve is small, the opening and closing sensitivity of the valve flap is high, the response time is short, after the safety valve is used for a period of time, the safety valve is influenced by factors such as severe working conditions and medium corrosion, the frictional resistance between the valve flap seat and the guide sleeve is increased, the phenomenon that the valve flap is still not opened when the medium pressure reaches the set pressure is caused, the pressure can not be relieved when the medium pressure in the system reaches the set pressure, the medium pressure in the system can be continuously increased until the medium pressure can overcome the sum of the frictional resistance and the spring force, the opening and closing sensitivity of the valve flap is low, the response time is long, the larger the frictional resistance is, the larger the medium pressure for opening the valve flap is, the larger the damage to system equipment and pipelines is caused, even explosion accidents occur, and larger potential safety hazards exist.
Disclosure of Invention
In order to solve the technical problem, the invention provides a double-insurance intelligent safety valve, which adopts the specific technical scheme that:
a double-insurance intelligent safety valve comprises a valve seat and a valve body, wherein a valve clack, a valve clack seat and a valve rod are sequentially arranged above the valve seat, the valve clack seat is arranged in a guide sleeve and can move up and down along the guide sleeve, a spring is sleeved on the periphery of the valve rod, a valve cap is arranged above the valve body, an auxiliary cylinder is arranged at the upper end of the valve cap, a piston rod of the auxiliary cylinder is connected with the upper end of the valve rod, the auxiliary cylinder is connected with a three-position four-way electromagnetic reversing valve, the action of the three-position four-way electromagnetic reversing valve is controlled by an electrical control system, and the lower end of the valve rod is connected with the valve clack seat; the pressure sensor can detect the medium pressure in the valve seat inner cavity and feed back a pressure signal to an electric control system of the three-position four-way electromagnetic directional valve.
Further, an air inlet pipe is fixed at the lower end of the valve seat, an exhaust pipe is fixed at one side of the valve body, and the air inlet pipe is connected with the three-position four-way electromagnetic directional valve through a first communicating pipe; and the exhaust pipe is connected with the three-position four-way electromagnetic directional valve through a second communicating pipe.
Further, the pressure sensor is mounted on a side wall of the intake pipe.
Furthermore, a piston rod of the auxiliary cylinder is connected with a valve rod through a connecting sleeve, two corresponding strip-shaped grooves are axially formed in the side wall of the connecting sleeve, a pin shaft is transversely and fixedly arranged at the upper end of the valve rod, and two ends of the pin shaft are respectively located in the two strip-shaped grooves; the length of the strip-shaped groove is not less than the opening height of the valve clack, and the stroke of a piston rod of the auxiliary cylinder is not less than 2 times of the opening height of the valve clack.
Furthermore, the lower end of the valve rod is provided with an annular groove, two symmetrical semicircular annular connecting sheets are arranged in the annular groove, and the connecting sheets are connected with the valve clack seat through screws.
Furthermore, the lower end of the valve rod is provided with a conical table, the upper end face of the valve clack seat is provided with a conical groove, the conical table is located in the conical groove, and the conical angle of the conical table is smaller than that of the conical groove.
Furthermore, a gap is reserved between the connecting sheet and the side wall of the annular groove, the lower end of the conical table is arc-shaped, and the bottom of the conical groove is also arc-shaped.
The invention has the beneficial effects that:
the auxiliary cylinder and the pressure sensor are added, the valve clack can be quickly opened by the auxiliary cylinder, the system can timely release pressure, the problem that the valve clack cannot be opened timely due to the fact that friction resistance between the valve clack seat and the guide sleeve is increased is solved, the system can quickly release pressure, and potential safety hazards are eliminated.
Drawings
Fig. 1 is a structural sectional view of the present invention.
Fig. 2 is a hydraulic schematic of the present invention.
Fig. 3 is a sectional view showing a connection structure of the valve rod 4 and the auxiliary cylinder 9 in the present invention.
Fig. 4 is a sectional view of the connection structure of the valve stem 4 and the valve flap seat 6 in the present invention.
In the figure: 1. a valve body; 2. a valve seat; 3. a valve flap; 4. a valve stem; 5. a spring; 6. a valve flap seat; 7. a guide sleeve; 8. a bonnet; 9. an auxiliary cylinder; 10. a three-position four-way electromagnetic directional valve; 11. a pressure sensor; 12. an air inlet pipe; 13. an exhaust pipe; 14. a first communication pipe; 15. a second communicating pipe; 16. connecting sleeves; 17. a strip-shaped groove; 18. a pin shaft; 19. an annular groove; 20. connecting sheets; 21. a screw; 22. a conical table; 23. and a tapered groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected, or integral; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.
As shown in fig. 1 to 4, a double-insurance intelligent safety valve comprises a valve seat 2 and a valve body 1, wherein a valve clack 3, a valve clack seat 6 and a valve rod 4 are sequentially arranged above the valve seat 2, the valve clack seat 6 is positioned in a guide sleeve 7 and can move up and down along the guide sleeve 7, a spring 5 is sleeved on the periphery of the valve rod 4, the spring 5 ensures that the valve rod 4 is reset after pressure relief is completed, a valve bonnet 8 is arranged above the valve body 1, an auxiliary cylinder 9 is installed at the upper end of the valve bonnet 8, a piston rod of the auxiliary cylinder 9 is connected with the upper end of the valve rod 4, the auxiliary cylinder 9 is connected with a three-position four-way electromagnetic directional valve 10, the action of the three-position four-way electromagnetic directional valve 10 is controlled by an electrical control system, and the lower end of the valve rod 4 is connected with the valve clack seat 6; an air inlet pipe 12 is fixed at the lower end of the valve seat 2, a pressure sensor 11 is installed on the side wall of the air inlet pipe 12, an air outlet pipe 13 is fixed on one side of the valve body 1, and the air inlet pipe 12 is connected with a three-position four-way electromagnetic directional valve 10 through a first communicating pipe 14; the exhaust pipe 13 is connected with the three-position four-way electromagnetic directional valve 10 through a second communication pipe 15.
The auxiliary cylinder 9 is connected with the three-position four-way electromagnetic directional valve 10, the auxiliary cylinder 9 utilizes pressure medium in the system as a power air source, an air source does not need to be independently arranged, the structure is simplified, the cost is reduced, the implementation is facilitated, and the pressure sensor 11 can detect the medium pressure in the inner cavity of the valve seat 2 and feed back the pressure signal to the electric control system of the three-position four-way electromagnetic directional valve 10. In the course of the work, if the medium pressure of system surpasses the set pressure value that the safety valve opened, valve clack 3 did not open this moment, then pressure sensor 11 detects system pressure and has surpassed the set pressure value, then pressure sensor 11 feeds back pressure signal to the electrical control system of tribit four-way electromagnetic directional valve 10, make tribit four-way electromagnetic directional valve 10 commutate, assist cylinder 9 work, and upwards force through valve rod 4 and mention valve clack seat 6, make valve clack 3 open fast, the system accomplishes quick pressure release, the problem of valve clack 3 can not in time open because of the frictional resistance is too big between valve clack seat 6 and the uide bushing 7 has been solved, make the system in time release pressure, the potential safety hazard has been stopped.
The auxiliary cylinder 9 is characterized in that a piston rod is connected with a valve rod 4 through a connecting sleeve 16, two corresponding strip-shaped grooves 17 are axially arranged on the side wall of the connecting sleeve 16, a pin shaft 18 is transversely and fixedly arranged at the upper end of the valve rod 4, two ends of the pin shaft 18 are respectively positioned in the two strip-shaped grooves 17, an annular groove 19 is arranged at the lower end of the valve rod 4, two symmetrical semicircular annular connecting sheets 20 are arranged in the annular groove 19, a gap is reserved between the connecting sheets 20 and the side wall of the annular groove 19, and the connecting sheets 20 are connected with the valve clack seat 6 through screws 21; when the auxiliary cylinder 9 is operated, the valve flap seat 6 can be lifted up by the valve rod 4 and the connecting piece 20. The length of the strip-shaped groove 17 is not less than the opening height of the valve clack 3, and the stroke of the piston rod of the auxiliary cylinder 9 is not less than 2 times of the opening height of the valve clack 3. If the valve clack 3 can be normally opened when the medium pressure in the system reaches the set pressure, the auxiliary cylinder 9 does not work, and the pin shaft 18 on the valve rod 4 can move up and down in the strip-shaped groove, which is the same as the working principle of the existing safety valve; if the valve clack 3 can not be normally opened when the medium pressure in the system reaches the set pressure, the piston rod of the auxiliary cylinder 9 is formed to meet the requirement of the valve clack 3 for opening height.
The lower end of the valve rod 4 is provided with a conical table 22, the upper end face of the valve flap seat 6 is provided with a conical groove 23, the conical table 22 is located in the conical groove 23, the lower end of the conical table 22 is arc-shaped, the bottom of the conical groove 23 is also arc-shaped, and the cone angle of the conical table 22 is smaller than that of the conical groove 23. The lower extreme center of valve rod 4 can be adjusted well with the center of the up end of valve clack seat 6 automatically when having guaranteed that valve clack 3 returns valve clack seat 6, and the lower extreme of valve rod 4 slips into the center of the bottom of bell groove 23 easily, avoids valve clack 3 atress uneven when reducing wear, can also strengthen the sealed effect of valve clack 3.
The working principle is as follows:
setting a pressure value of the safety valve, and in a normal working state, when the medium pressure in an air inlet pipe 12 in the safety valve reaches the set pressure value, namely the pressure is enough to overcome the force of a spring 5 on a valve rod 4 through a valve clack 3 and a valve clack seat 6, the medium pressure pushes the valve clack 3 to move upwards to further push the valve clack seat 6 to move upwards and compress the spring 5, the valve clack 3 is separated from a valve seat 2, the valve is opened, the medium in the system is discharged outwards, and when the pressure in the system is reduced to a set value, the valve clack 3 is closed with the valve seat 2 under the force of the spring 5, and the valve is closed; when the medium pressure in the air inlet pipe 12 exceeds a set pressure value, the valve clack 3 is not opened for pressure relief at the moment, the pressure sensor 11 detects that the system pressure exceeds a set value, the pressure sensor 11 feeds a pressure signal back to an electrical control system of the three-position four-way electromagnetic directional valve 10, the three-position four-way electromagnetic directional valve 10 is reversed, the auxiliary cylinder 9 is connected with the air inlet pipe 12 and the exhaust pipe 13 through the three-position four-way electromagnetic directional valve 10, an air source of the auxiliary cylinder 9 is obtained, then the auxiliary cylinder 9 works, the valve clack seat 6 is forcibly lifted upwards through the valve rod 4, the valve clack 3 is rapidly opened, the system can timely relieve the pressure, the problem that the valve clack 3 cannot be timely opened due to the fact that the friction resistance between the valve clack seat 6 and the guide sleeve 7 is increased is solved, the system can rapidly relieve the pressure, and potential safety hazards are avoided.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (7)
1. A double-insurance intelligent safety valve comprises a valve seat and a valve body, wherein a valve clack, a valve clack seat and a valve rod are sequentially arranged above the valve seat, the valve clack seat is arranged in a guide sleeve and can move up and down along the guide sleeve, and a spring is sleeved on the periphery of the valve rod; the pressure sensor can detect the medium pressure in the inner cavity of the valve seat and feed back a pressure signal to an electric control system of the three-position four-way electromagnetic directional valve.
2. A double-safety intelligent safety valve according to claim 1, wherein: an air inlet pipe is fixed at the lower end of the valve seat, an exhaust pipe is fixed at one side of the valve body, and the air inlet pipe is connected with the three-position four-way electromagnetic directional valve through a first communicating pipe; and the exhaust pipe is connected with the three-position four-way electromagnetic directional valve through a second communicating pipe.
3. A double-safety intelligent safety valve according to claim 2, wherein: the pressure sensor is arranged on the side wall of the air inlet pipe.
4. A double-safety smart safety valve according to claim 1, 2 or 3, wherein: the piston rod of the auxiliary cylinder is connected with the valve rod through a connecting sleeve, two corresponding strip-shaped grooves are axially formed in the side wall of the connecting sleeve, a pin shaft is transversely and fixedly arranged at the upper end of the valve rod, and two ends of the pin shaft are respectively located in the two strip-shaped grooves; the length of the strip-shaped groove is not less than the opening height of the valve clack, and the stroke of a piston rod of the auxiliary cylinder is not less than 2 times of the opening height of the valve clack.
5. A double-safety smart safety valve according to claim 1, 2 or 3, wherein: the lower end of the valve rod is provided with an annular groove, two symmetrical semicircular annular connecting sheets are arranged in the annular groove, and the connecting sheets are connected with the valve clack seat through screws.
6. A double-safety intelligent safety valve according to claim 5, wherein: the lower end of the valve rod is provided with a conical table, the upper end face of the valve clack seat is provided with a conical groove, the conical table is located in the conical groove, and the conical angle of the conical table is smaller than that of the conical groove.
7. A double-safety intelligent safety valve according to claim 6, wherein: a gap is reserved between the connecting sheet and the side wall of the annular groove, the lower end of the conical table is arc-shaped, and the bottom of the conical groove is also arc-shaped.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210965072.4A CN115325188A (en) | 2022-08-12 | 2022-08-12 | Double-safety intelligent safety valve |
| PCT/CN2023/104531 WO2024032240A1 (en) | 2022-08-12 | 2023-06-30 | Double-safety intelligent safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210965072.4A CN115325188A (en) | 2022-08-12 | 2022-08-12 | Double-safety intelligent safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115325188A true CN115325188A (en) | 2022-11-11 |
Family
ID=83924595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210965072.4A Withdrawn CN115325188A (en) | 2022-08-12 | 2022-08-12 | Double-safety intelligent safety valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115325188A (en) |
| WO (1) | WO2024032240A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024032240A1 (en) * | 2022-08-12 | 2024-02-15 | 上海电子信息职业技术学院 | Double-safety intelligent safety valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216128A (en) * | 2008-01-16 | 2008-07-09 | 江南大学 | Security valve and its on-line calibration technology |
| CN108223856A (en) * | 2017-12-27 | 2018-06-29 | 成都锦汇科技有限公司 | A kind of control method for automatically shutting down safety-valve |
| CN209856413U (en) * | 2019-04-27 | 2019-12-27 | 江苏宏泰石化机械有限公司 | Quick cut-off safety valve |
| DE102019111981A1 (en) * | 2019-05-08 | 2020-11-12 | Pittway Sarl | Pressure reducer |
| CN210770473U (en) * | 2019-10-08 | 2020-06-16 | 永一阀门集团有限公司 | Safety valve with pneumatic device |
| CN113915386A (en) * | 2021-11-11 | 2022-01-11 | 温州职业技术学院 | Intelligent double-safety piston balanced type pressure release valve |
| CN115325188A (en) * | 2022-08-12 | 2022-11-11 | 上海电子信息职业技术学院 | Double-safety intelligent safety valve |
-
2022
- 2022-08-12 CN CN202210965072.4A patent/CN115325188A/en not_active Withdrawn
-
2023
- 2023-06-30 WO PCT/CN2023/104531 patent/WO2024032240A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024032240A1 (en) * | 2022-08-12 | 2024-02-15 | 上海电子信息职业技术学院 | Double-safety intelligent safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024032240A1 (en) | 2024-02-15 |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20221111 |
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| WW01 | Invention patent application withdrawn after publication |