CN111677924A - Plug-in type pressure relief safety valve - Google Patents
Plug-in type pressure relief safety valve Download PDFInfo
- Publication number
- CN111677924A CN111677924A CN202010614177.6A CN202010614177A CN111677924A CN 111677924 A CN111677924 A CN 111677924A CN 202010614177 A CN202010614177 A CN 202010614177A CN 111677924 A CN111677924 A CN 111677924A
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- valve body
- pressure relief
- type pressure
- safety valve
- sealing
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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
- F16K17/06—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 special arrangements for adjusting the opening 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a plug-in type pressure relief safety valve which comprises a valve body, a sealing joint, a first sealing ring and a second sealing ring, wherein the first sealing ring is arranged on the valve body; the sealing joint seals the top end opening of the valve body; the side wall of the valve body is sequentially provided with a first annular mounting groove, an auxiliary port and a second annular mounting groove along the axial direction of the valve body; the first sealing ring and the second sealing ring are respectively arranged in the first annular mounting groove and the second annular mounting groove; when the plug-in type pressure relief safety valve is plugged into a system to be plugged, the first sealing ring and the second sealing ring are respectively sealed with the system to be plugged, and the auxiliary port is in conduction connection with an external discharge flow channel of the system to be plugged; when the pressure in the system to be plugged is higher than the opening pressure of the plug-in type pressure relief safety valve, the main port and the auxiliary port at the bottom end of the valve body are communicated. When the pressure in the system to be plugged is higher than the opening pressure of the plug-in type pressure relief safety valve, the main port at the bottom end is communicated with the auxiliary port, so that the problem that the pressure relief safety valve needs a special exhaust pipeline for combustible or harmful gas is solved.
Description
Technical Field
The invention relates to the technical field of automobiles and industry, in particular to a plug-in type pressure relief safety valve.
Background
The pressure relief safety valve is arranged in a pneumatic or hydraulic system and used for protecting the safety of closed system equipment or pipelines. The pressure relief safety valve can be opened and closed automatically according to the working pressure of the system, when the system pressure is higher than the opening pressure of the pressure relief safety valve, the pressure relief safety valve opens to release the pressure in the system, and when the pressure in the system is reduced to the return pressure of the pressure relief safety valve, the pressure relief safety valve is closed.
For combustible or hazardous gas, the safety valve is opened and then is discharged by using a special exhaust pipeline, the safety valve needs to be provided with a pipeline interface for connection under the condition, and the design of an external pipeline increases the complexity of structural design.
Therefore, how to avoid the problem that a pressure relief safety valve needs a special exhaust pipeline for combustible or hazardous gas is a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of this, the present invention provides a plug-in type pressure relief safety valve, which can avoid the need of a special exhaust pipeline for combustible or hazardous gas.
In order to achieve the above object, the present invention provides the following solutions:
a plug-in type pressure relief safety valve comprises a valve body, a sealing joint, a first sealing ring and a second sealing ring;
the sealing joint seals the top end opening of the valve body;
along the axial direction of the valve body, a first annular mounting groove, an auxiliary port and a second annular mounting groove are sequentially formed in the side wall of the valve body;
the first sealing ring and the second sealing ring are respectively arranged in the first annular mounting groove and the second annular mounting groove;
when the plug-in type pressure relief safety valve is plugged into a system to be plugged, the first sealing ring and the second sealing ring are respectively sealed with the system to be plugged, and the auxiliary port is in conduction connection with an external discharge flow channel of the system to be plugged;
when the pressure in the system to be plugged is higher than the opening pressure of the plug-in type pressure relief safety valve, the main port at the bottom end of the valve body is communicated with the auxiliary port.
In a specific embodiment, the cartridge type pressure relief and safety valve further comprises a third sealing ring;
the lateral wall of sealing joint be provided with valve body top open-ended threaded connection's screw thread portion, just third annular mounting groove has been seted up on the top of screw thread portion, the third sealing washer is installed in the third annular mounting groove, just the third sealing washer with top open-ended inner wall butt is sealed.
In a specific embodiment, the outer wall of the valve body is provided with an outer limiting bulge, and the outer limiting bulge is used for abutting and limiting with the system to be plugged;
and the bottom end of the valve body is provided with an external thread which is used for being in threaded connection with the system to be plugged.
In another specific embodiment, the cartridge type pressure relief safety valve further comprises a switch valve rod, a sealing gasket, an adjusting spring and a locking sheath;
the sealing gasket is arranged at the main port at the bottom end of the valve body;
the switch valve rod and the adjusting spring are arranged in the valve body;
the adjusting spring is in a compressed state and sleeved outside the switch valve rod, and the bottom end of the switch valve rod is pressed on the sealing gasket to seal the bottom end main port;
the locking sheath is connected in the valve body and can adjust the pretightening force of the adjusting spring.
In another specific embodiment, the bottom end of the switch valve rod is spherical, and the sealing gasket and the sealing surface at the bottom end of the switch valve rod are in reverse conical surfaces.
In another specific embodiment, a guide part is arranged on the locking sheath, and a guide hole is formed in the guide part;
the switching valve rod moves along the guide hole.
In another specific embodiment, the guide is in the shape of a polygon prism.
In another specific embodiment, the locking sheath is threadably connected to the inner wall of the valve body.
In another specific embodiment, the seal is an annular seal;
the inner wall of the valve body is provided with an inner limiting bulge, and the bottom end of the sealing gasket is provided with a limiting part abutted against the inner limiting bulge.
In another specific embodiment, the cartridge type pressure relief and safety valve further comprises a base;
the base is connected in the valve body, just the top of base with the bottom butt of sealed pad.
The various embodiments according to the invention can be combined as desired, and the embodiments obtained after these combinations are also within the scope of the invention and are part of the specific embodiments of the invention.
In one embodiment of the invention, the plug-in type pressure relief safety valve is disclosed, when in use, the plug-in type pressure relief safety valve is plugged into a system to be plugged, so that a first sealing ring and a second sealing ring are respectively sealed with the system to be plugged, a secondary port is positioned in a sealed cavity defined by the first sealing ring, the second sealing ring, the outer wall of the valve body and the system to be plugged, and the secondary port is in conduction connection with a flow passage of the system to be plugged. When the pressure in the system to be plugged is higher than the opening pressure of the plug-in type pressure relief safety valve, the main port and the auxiliary port at the bottom end of the valve body are communicated, so that the problem that the pressure relief safety valve needs a special exhaust pipeline for combustible or harmful gas is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a cartridge type pressure relief valve provided by the present invention inserted into a system to be inserted;
FIG. 2 is a schematic cross-sectional view of the cartridge type pressure relief valve according to the present invention;
fig. 3 is an explosion structure diagram of the cartridge type pressure relief safety valve provided by the invention.
Wherein, in fig. 1-3:
the valve comprises a valve body 1, a sealing joint 2, a first sealing ring 3, a second sealing ring 4, a first annular mounting groove 101, an auxiliary port 102, a second annular mounting groove 103, a third sealing ring 5, an external discharge flow channel 11, a bottom end main port 104, a threaded portion 201, a third annular mounting groove 202, an external limiting protrusion 105, a switch valve rod 6, a sealing gasket 7, an adjusting spring 8, a locking sheath 9, a guide portion 901, an internal limiting protrusion 106, a limiting portion 701 and a base 10.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying fig. 1-3 and the detailed description.
As shown in fig. 1, the present invention provides a cartridge type pressure relief safety valve, wherein the cartridge type pressure relief safety valve includes a valve body 1, a sealing joint 2, a first sealing ring 3, and a second sealing ring 4.
The top of valve body 1 is provided with the top opening that switches on with the inner chamber of valve body 1, and the bottom of valve body 1 is provided with the bottom main port 104 that switches on with the inner chamber of valve body 1.
Along the axial of valve body 1, first annular mounting groove 101, vice port 102 and second annular mounting groove 103 have been seted up in proper order to the lateral wall of valve body 1, and vice port 102 switches on with the inner chamber of valve body 1.
Specifically, the secondary port 102 includes a plurality of through holes that are evenly distributed along the circumferential direction of the valve body 1.
The first sealing ring 3 and the second sealing ring 4 are respectively installed in the first annular installation groove 101 and the second annular installation groove 103, when the plug-in type pressure relief safety valve is plugged into a system to be plugged, the outer wall of the first sealing ring 3 and the outer wall of the second sealing ring 4 are respectively abutted to the inner wall of the system to be plugged, so that the first sealing ring 3 and the second sealing ring 4 are sealed with the system to be plugged, and the auxiliary port 102 is in conduction connection with the flow channel 11 of the system to be plugged.
When the pressure in the system to be plugged is higher than the opening pressure of the plug-in type pressure relief safety valve, the main port 104 at the bottom end of the valve body 1 is communicated with the auxiliary port 102.
The invention discloses a plug-in type pressure relief safety valve, which is plugged into a system to be plugged when in use, so that a first sealing ring 3 and a second sealing ring 4 are respectively sealed with the system to be plugged, an auxiliary port 102 is positioned in a closed cavity surrounded by the first sealing ring 3, the second sealing ring 4, the outer wall of a valve body 1 and the system to be plugged, and the auxiliary port 102 is in conduction connection with a flow passage 11 of the system to be plugged. When the pressure in the system to be plugged is higher than the opening pressure of the plug-in type pressure relief safety valve, the main port 104 and the auxiliary port 102 at the bottom end of the valve body 1 are communicated, so that the problem that the pressure relief safety valve needs a special exhaust pipeline for combustible or harmful gas is solved.
In a specific embodiment, the cartridge type pressure relief safety valve further comprises a third sealing ring 5, and the side wall of the sealing joint 2 is provided with a threaded part 201 in threaded connection with the top opening of the valve body 1, so that the sealing joint 2 can be conveniently assembled and disassembled. In order to facilitate screwing the sealing joint 2, the sealing joint 2 is in a hexahedral shape, similar to a nut structure.
Third annular mounting groove 202 has been seted up at the top of screw thread portion 201, and third sealing washer 5 is installed in third annular mounting groove 202, and third sealing washer 5 is sealed with the open-ended inner wall butt in top to realize sealing joint 2 and valve body 1's sealed. Namely, the bottom of the valve body 1 is sealed in a radial direction, and the third sealing ring 5 is matched and sealed with the inner cavity of the valve body 1, so that the medium in the system is ensured to leak from the bottom end main port 104 to the auxiliary port 102.
The sealing joint 2 may also seal the valve body 1 by a sealing strip.
After the plug-in type pressure relief safety valve is installed in a to-be-plugged system, the bottom main port 104 corresponds to an inner cavity flow channel of the to-be-plugged system, the auxiliary port 102 corresponds to the outer discharge flow channel 11, the first sealing ring 3, the second sealing ring 4 and the third sealing ring 5 guarantee the sealing performance between the bottom main port 104 and the auxiliary port 102 and the outside, when the pressure of the inner cavity of the to-be-plugged system rises to the opening pressure, after the medium pressure at the bottom main port 104 pushes the switch valve rod 6 open, the medium is discharged into the discharge flow channel 11 through the auxiliary port 102, the pressure relief of the medium is achieved, and the integration level of the plug-in type pressure relief valve and the reliability of the system are.
In a specific embodiment, the outer wall of the valve body 1 is provided with an outer limiting protrusion 105, and the outer limiting protrusion 105 is used for being abutted and limited with a system to be inserted, so that the installation of the plug-in type pressure release valve is facilitated. Specifically, the outer limiting protrusion 105 is hexahedral, i.e., similar to a nut structure, so that a wrench can conveniently screw the outer limiting protrusion 105 to install the plug-in type pressure relief safety valve in place.
The bottom end of the valve body 1 is provided with external threads for being in threaded connection with a system to be plugged, and specifically, the valve body 1 is in threaded connection with a valve main body of the system to be plugged.
In a specific embodiment, the cartridge type pressure relief safety valve further comprises a switch valve rod 6, a sealing gasket 7, a regulating spring 8 and a locking sheath 9.
The hole of sealed pad 7 switches on the inner chamber of bottom main port 104 and valve body 1, and sealed pad 7 is installed in the bottom main port 104 department of valve body 1, and switch valve rod 6 and adjusting spring 8 are all arranged in valve body 1, and adjusting spring 8 is in compression state, and overcoat switch valve rod 6 for compress tightly switch valve rod 6's bottom on sealed pad 7, with sealed bottom main port 104.
The locking sheath 9 is connected in the valve body 1 and can adjust the pretightening force of the adjusting spring 8. Specifically, locking sheath 9 compresses tightly regulating spring 8's top, regulating spring 8's bottom and switch valve seat butt, through the distance of adjusting locking sheath 9 and switch valve seat, realize the regulation of 8 compression of regulating spring, and then realize the regulation of 8 pretightning forces of regulating spring, avoid cartridge formula pressure release relief valve to seal up inefficacy, and then avoided switch valve rod 6 and sealed 7 that seal up that the sealing up leads to be less than the opening pressure of settlement and open, lead to the unusual leakage of medium in the system to discharge and switch valve rod 6 and normally open exceeding the opening pressure of settlement, lead to the unusual superelevation of system internal pressure, damage the problem of all the other spare parts of system.
The locking sheath 9 can be in threaded connection with the inner wall of the valve body 1, and the control on the compression amount of the adjusting spring 8 is realized by screwing the locking sheath 9; also can set up a plurality of draw-in grooves along the axle center of valve body 1 on the inner wall of valve body 1, the outer wall of locking sheath 9 is provided with the joint arch, and the joint arch can block to the draw-in groove in, through the protruding card of joint of adjusting locking sheath 9 in different draw-in grooves, realizes the control to adjusting spring 8's decrement.
In a specific embodiment, the invention specifically discloses that the locking sheath 9 is provided with a guide portion 901, a guide hole is formed in the guide portion 901, and the switch valve rod 6 moves along the guide hole, so that the linear motion of the switch valve rod 6 is ensured. Specifically, 9 inner chambers of locking sheath and guiding hole set up with the axle center, and the size of inner chamber is greater than the guiding hole size for inner chamber and guiding hole form the echelonment, and adjusting spring 8 imbeds 9 inner chambers of locking sheath, and guarantees that there is small clearance, and protecting spring's linear motion, adjusting spring 8's top and the roof butt of locking sheath 9 inner chambers.
In a specific embodiment, the guiding portion 901 has a polygonal column shape, so that the locking sheath 9 can be easily adjusted by holding the locking sheath 9 by hand or by using a tool.
In a specific embodiment, the invention specifically discloses that the bottom end of the switch valve rod 6 is spherical, the sealing gasket 7 and the sealing surface at the bottom end of the switch valve rod 6 are in an inverted conical surface, and the reliable sealing of the switch valve rod 6 and the sealing gasket 7 is realized by the cooperation of the spherical surface and the inverted conical surface.
In a specific embodiment, the seal 7 is specifically disclosed as an annular seal, and it should be noted that the shape of the seal 7 is not limited, and may be other shapes.
The inner wall of the valve body 1 is provided with an inner limiting bulge 106, and the bottom end of the sealing gasket 7 is provided with a limiting part 701 abutted against the inner limiting bulge 106, so that the sealing gasket 7 can be conveniently installed in place. Specifically, the limiting portion 701 on the gasket 7 and the inner limiting protrusion 106 on the inner wall of the valve body 1 are both stepped. It should be noted that the limiting portion 701 and the inner limiting protrusion 106 may also be formed by surrounding a plurality of arc-shaped pieces.
In a specific embodiment, the invention discloses that the cartridge type pressure relief safety valve further comprises a base 10, wherein the base 10 is connected in the valve body 1, and the top end of the base 10 is abutted against the bottom end of the sealing gasket 7. Specifically, the base 10 may be screwed to the valve body 1, or may be clamped to the valve body.
The invention has the following advantages:
(1) when the plug-in type pressure relief safety valve is used, the sealing gasket 7 is installed from the bottom end of the valve body 1, the limiting part 701 on the sealing gasket 7 is attached to the inner limiting part 701 of the valve body 1, the base 10 compresses the sealing gasket 7 from the bottom end of the valve body 1, and sealing of the sealing gasket 7 and the attachment part inside the valve body 1 is guaranteed;
(2) the bottom of the switch valve rod 6 is designed into a spherical structure, is attached to an inverted conical surface on the sealing gasket 7 and is tightly pressed by the adjusting spring 8, so that the sealing between the switch valve rod 6 and the sealing gasket 7 is ensured;
(3) the locking sheath 9 is provided with a guide part 901 which is used as a guide mechanism of the switch valve rod 6 to ensure the linear motion of the switch valve rod 6;
(4) the adjusting spring 8 is embedded into the inner cavity of the locking sheath 9, a tiny gap is ensured, and the linear motion of the adjusting spring 8 is protected;
(5) the outer wall of the locking sheath 9 is provided with a thread part 201 which is matched with the thread inside the valve body 1, and the pressure of the spring 8 on the switch valve rod 6 can be adjusted through thread assembly.
It should be noted that the words indicating the orientation herein, such as upper, lower, left, right, etc., are only for convenience of description and have no other specific meaning with respect to the position of the illustrated structure in the corresponding drawings.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A plug-in type pressure relief safety valve is characterized by comprising a valve body (1), a sealing joint (2), a first sealing ring (3) and a second sealing ring (4);
the sealing joint (2) seals the top end opening of the valve body (1);
along the axial direction of the valve body (1), the side wall of the valve body (1) is sequentially provided with a first annular mounting groove (101), an auxiliary port (102) and a second annular mounting groove (103);
the first sealing ring (3) and the second sealing ring (4) are respectively arranged in the first annular mounting groove (101) and the second annular mounting groove (103);
when the plug-in type pressure relief safety valve is plugged into a system to be plugged, the first sealing ring (3) and the second sealing ring (4) are respectively sealed with the system to be plugged, and the auxiliary port (102) is in conduction connection with an external discharge flow channel (11) of the system to be plugged;
when the pressure in the system to be plugged is higher than the opening pressure of the plug-in type pressure relief safety valve, the bottom end main port (104) of the valve body (1) is communicated with the auxiliary port (102).
2. The cartridge type pressure relief and safety valve according to claim 1, further comprising a third sealing ring (5);
the lateral wall of sealing joint (2) be provided with valve body (1) top end opening threaded connection's screw thread portion (201), just third annular mounting groove (202) have been seted up on the top of screw thread portion, third sealing washer (5) are installed in third annular mounting groove (202), just third sealing washer (5) with top end opening's inner wall butt is sealed.
3. The cartridge type pressure relief and safety valve according to claim 1, wherein the outer wall of the valve body (1) is provided with an outer limiting bulge (105), and the outer limiting bulge (105) is used for limiting the abutment with the system to be inserted;
and the bottom end of the valve body (1) is provided with an external thread which is used for being in threaded connection with the system to be plugged.
4. A cartridge type pressure relief and safety valve according to any one of claims 1 to 3, further comprising a switch valve rod (6), a sealing gasket (7), an adjusting spring (8) and a locking sheath (9);
the sealing gasket (7) is arranged at a bottom end main port (104) of the valve body (1);
the switch valve rod (6) and the adjusting spring (8) are both arranged in the valve body (1);
the adjusting spring (8) is in a compressed state and sleeved outside the switch valve rod (6) and is used for pressing the bottom end of the switch valve rod (6) on the sealing gasket (7) so as to seal the bottom end main port (104);
the locking sheath (9) is connected in the valve body (1) and can adjust the pretightening force of the adjusting spring (8).
5. A cartridge type pressure relief and safety valve according to claim 4, wherein the bottom end of the switch valve rod (6) is spherical, and the sealing gasket (7) and the bottom end sealing surface of the switch valve rod (6) are reverse conical surfaces.
6. The cartridge type pressure relief and safety valve according to claim 4, wherein the locking sheath (9) is provided with a guide part (901) in which a guide hole is formed;
the switching valve rod (6) moves along the guide hole.
7. The cartridge type pressure relief and protection valve according to claim 6, wherein the guide portion is polygonal prism-shaped.
8. The cartridge type pressure relief and safety valve according to claim 4, wherein the locking sheath (9) is in threaded connection with the inner wall of the valve body (1).
9. A cartridge type pressure relief and safety valve according to claim 4, wherein the sealing gasket (7) is an annular sealing gasket;
the inner wall of the valve body (1) is provided with an inner limiting bulge (106), and the bottom end of the sealing gasket (7) is provided with a limiting part (701) abutted against the inner limiting bulge (106).
10. A cartridge pressure relief safety valve according to any of claims 5-9, further comprising a seat (10);
the base (10) is connected in the valve body (1), and the top end of the base (10) is abutted against the bottom end of the sealing gasket (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010614177.6A CN111677924A (en) | 2020-06-30 | 2020-06-30 | Plug-in type pressure relief safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010614177.6A CN111677924A (en) | 2020-06-30 | 2020-06-30 | Plug-in type pressure relief safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111677924A true CN111677924A (en) | 2020-09-18 |
Family
ID=72437424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010614177.6A Pending CN111677924A (en) | 2020-06-30 | 2020-06-30 | Plug-in type pressure relief safety valve |
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| Country | Link |
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| CN (1) | CN111677924A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682596A (en) * | 2021-01-12 | 2021-04-20 | 上海亚大汽车塑料制品有限公司 | Connecting joint capable of discharging high-pressure fluid and method for discharging high-pressure fluid |
| CN114607815A (en) * | 2020-12-08 | 2022-06-10 | 未势能源科技有限公司 | Pressure reducing valve assembly |
| CN119373905A (en) * | 2024-12-31 | 2025-01-28 | 天正阀门有限公司 | Shockproof built-in safety valve |
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| CN108561360A (en) * | 2018-06-04 | 2018-09-21 | 中国石油化工股份有限公司 | A kind of overflow valve |
| CN109737227A (en) * | 2019-01-29 | 2019-05-10 | 湖北三江航天红峰控制有限公司 | Safety valve |
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- 2020-06-30 CN CN202010614177.6A patent/CN111677924A/en active Pending
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| US4003401A (en) * | 1974-03-28 | 1977-01-18 | Haring Rolf A | Liquid outlet valve |
| CN2694015Y (en) * | 2003-12-25 | 2005-04-20 | 上海亿力电器有限公司 | Closing gun stopping machine type relief valve decompressing by pinhole used in high pressure washer pump |
| DE102004043966A1 (en) * | 2004-04-24 | 2005-11-17 | Continental Teves Ag & Co. Ohg | Pressure regulating valve especially for vehicle's stabilizing system has control piston installed in bush fastened to plug sealing housing, whereby bush with plug forms independently manageable and pre-testable sub-assembly |
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|---|---|---|---|---|
| CN114607815A (en) * | 2020-12-08 | 2022-06-10 | 未势能源科技有限公司 | Pressure reducing valve assembly |
| CN112682596A (en) * | 2021-01-12 | 2021-04-20 | 上海亚大汽车塑料制品有限公司 | Connecting joint capable of discharging high-pressure fluid and method for discharging high-pressure fluid |
| CN119373905A (en) * | 2024-12-31 | 2025-01-28 | 天正阀门有限公司 | Shockproof built-in safety valve |
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Address after: 201800 No. 1788, xiechun Road, Anting Town, Jiading District, Shanghai Applicant after: Shanghai jiehydrogen Technology Co.,Ltd. Address before: 201804 unit 10, No.17, Lane 56, Antuo Road, Jiading District, Shanghai Applicant before: Shanghai Jet Hydrogen Technology Co.,Ltd. |
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Application publication date: 20200918 |