CN112555478B - Thermally activated pressure relief valve - Google Patents
Thermally activated pressure relief valve Download PDFInfo
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- CN112555478B CN112555478B CN201910917027.XA CN201910917027A CN112555478B CN 112555478 B CN112555478 B CN 112555478B CN 201910917027 A CN201910917027 A CN 201910917027A CN 112555478 B CN112555478 B CN 112555478B
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- communication port
- temperature sensing
- side communication
- valve
- sensing unit
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
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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
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a heat-activated pressure relief valve which comprises a valve body, a bearing piece, a temperature sensing unit and a first valve core, wherein the valve body is provided with a high-pressure side communication port and a low-pressure side communication port, a fluid channel is connected between the high-pressure side communication port and the low-pressure side communication port, the first valve core is positioned in the fluid channel, the temperature sensing unit is suitable for limiting the bearing piece at a locking position on the radial inner side of the bearing piece in the valve body, the bearing piece limited at the locking position is used for plugging the fluid channel by the first valve core, and the temperature sensing unit is suitable for being heated to deform so as to remove the limiting force on the bearing piece, so that fluid at the high-pressure side communication port pushes the first valve core to move and the high-pressure side communication port is communicated with the low-pressure side communication port. According to the thermal activation pressure relief valve, the bearing piece can replace a temperature sensing unit to bear the gas pressure from a high-pressure container or a pipeline in the axial direction of the thermal activation pressure relief valve, and the working reliability of the thermal activation pressure relief valve is higher.
Description
Technical Field
The invention relates to the field of valve bodies, in particular to a thermally activated pressure relief valve.
Background
In the related art, with the development of new energy vehicles, the hydrogen-oxygen fuel cell has the characteristics of high energy conversion efficiency, environmental friendliness and the like, and is more and more widely applied to the new energy vehicles. In a vehicle equipped with a hydrogen-oxygen fuel cell, a high-pressure hydrogen cylinder is generally preset in the vehicle, and the hydrogen in the high-pressure hydrogen cylinder and oxygen in the air are subjected to an electrochemical reaction in the hydrogen-oxygen fuel cell to generate electric energy, so as to realize the power supply of the hydrogen-oxygen fuel cell to the vehicle.
Because the hydrogen in the high-pressure hydrogen cylinder is easy to ignite at high temperature to explode, a heat-activated pressure relief valve is arranged on the high-pressure hydrogen cylinder or/and a pipeline connected with the high-pressure hydrogen cylinder. When the vehicle bumps or the vehicle breaks out a fire and the like and high temperature occurs, the temperature sensing unit of the thermal activation pressure relief valve can open the thermal activation pressure relief valve in time, so that hydrogen is released to the atmosphere in time, the vehicle is prevented from exploding due to the combustion of the hydrogen, and the safety of personnel in the vehicle is ensured.
The temperature sensing unit of current thermal activation pressure relief valve is at the opening of the thermal activation pressure relief valve of the axial shutoff thermal activation of the valve body of thermal activation pressure relief valve, and when the thermal activation pressure relief valve was heated, the temperature sensing unit took place the deformation under high temperature and opened the opening of thermal activation pressure relief valve and send hydrogen.
In the technical scheme, the temperature sensing unit is stressed in the axial direction of the heat activation pressure relief valve and is directly stressed by the pressure of the high-pressure hydrogen cylinder or the pipeline. Meanwhile, the temperature sensing unit needs to deform when the temperature rises, the strength of the temperature sensing unit is generally low, and the temperature sensing unit is easy to damage under the action of high pressure, so that hydrogen escapes from the thermally activated pressure relief valve in the normal work of the vehicle, and the use reliability is poor.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a thermally activated pressure relief valve which is at least to some extent more reliable in use.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a heat-activated pressure relief valve comprises a valve body, a bearing piece, a temperature sensing unit and a first valve core, wherein the valve body is provided with a high-pressure side communication port and a low-pressure side communication port, a fluid channel is connected between the high-pressure side communication port and the low-pressure side communication port, the first valve core is positioned in the fluid channel, and the temperature sensing unit is suitable for being arranged in the valve body relatively, the radial inner side of the bearing piece limits the bearing piece at a locking position, so that the first valve core is blocked by the fluid channel.
Further, the fluid channel includes: the flow cross-sectional area of the first flow passage is smaller than that of the second flow passage, the first flow passage is communicated with the high-pressure side communication port, the second flow passage is communicated with the low-pressure side communication port, and the bearing part limited at the locking position is used for enabling the first valve core to be blocked in the first flow passage.
Furthermore, a second valve core is arranged in the second flow passage, a second accommodating groove suitable for accommodating the first valve core is formed in the second valve core, an opening of the second accommodating groove is opposite to the first valve core, at least part of the first valve core extends into the second accommodating groove, and the bearing piece in the locking position is positioned between groove walls of the first valve core and the second accommodating groove.
Further, the first valve core is provided with a first accommodating groove and an accommodating through hole suitable for accommodating the bearing piece, and at least part of the temperature sensing unit is located in the first accommodating groove and suitable for limiting the bearing piece at the locking position.
Further, the opening of the first receiving groove is opposite to the second receiving groove.
Further, the temperature sensing unit is adapted to be supported between the bottom wall of the first receiving groove and the bottom wall of the second receiving groove.
Further, the second valve spool is provided with a first seal member provided with a first vent hole on a side facing the low pressure side communication port, the second valve spool being adapted to be supported on the first seal member.
Further, the second valve core has a valve body flow passage, both ends of the valve body flow passage are respectively communicated with the side wall of the second valve core and the bottom wall of the side of the second valve core facing the low-pressure side communication port, and the valve body flow passage is adapted to be communicated with the first vent hole.
Further, a second seal is provided around the peripheral wall of the first valve body on a side facing the high-pressure-side communication port.
Furthermore, the temperature sensing unit is a glass temperature sensing ball or a fusible alloy piece.
Compared with the prior art, the heat activated pressure relief valve has the following advantages:
1) according to the thermally-activated pressure relief valve, the bearing piece is arranged, and the temperature sensing unit is arranged on the radial inner side of the bearing piece to limit the bearing piece to the locking position, so that the bearing piece can replace the temperature sensing unit to receive gas pressure from a high-pressure container or a pipeline in the axial direction of the thermally-activated pressure relief valve, and the working reliability of the thermally-activated pressure relief valve is higher.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a thermally activated pressure relief valve according to a first embodiment of the present invention in the normal operation of a pressure vessel;
FIG. 2 is a schematic structural view of a thermally activated pressure relief valve according to a first embodiment of the present invention, which opens when heated;
fig. 3 is a schematic structural diagram of a second valve core according to the first embodiment of the invention;
FIG. 4 is a schematic diagram of a second embodiment of a thermally activated pressure relief valve according to the present invention during normal operation of a pressure vessel;
fig. 5 is a schematic structural view of a thermally activated pressure relief valve according to a second embodiment of the present invention, which is opened when heated.
Description of reference numerals:
the thermally activated pressure relief valve 100, the valve body 1, the high pressure side communication port 11, the low pressure side communication port 12, the fluid passage 13, the first flow passage 131, the second flow passage 132, the first spool 2, the first accommodation groove 21, the accommodation through hole 22, the second spool 3, the second accommodation groove 31, the valve body flow passage 32, the bearing member 4, the temperature sensing unit 5, the first sealing member 6, the first vent hole 61, and the second sealing member 7.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A thermally activated pressure relief valve 100 according to an embodiment of the present invention is described below with reference to fig. 1-5 in conjunction with an embodiment.
As shown in fig. 1 to 5, the thermally activated pressure relief valve 100 may include a valve body 1, a bearing member 4, a temperature sensing unit 5, and a first valve element 2, where the valve body 1 has a high pressure side communication port 11 and a low pressure side communication port 12, the high pressure side communication port 11 and the low pressure side communication port 12 are respectively located at two axially opposite sides of the thermally activated pressure relief valve 100, a fluid passage 13 is connected between the high pressure side communication port 11 and the low pressure side communication port 12, the high pressure side communication port 11 is communicated with a high pressure gas cylinder or a high pressure pipeline of a pressure vessel of a vehicle, and the low pressure side communication port 12 may be communicated with an external atmosphere. Note that, as not particularly specified, "high temperature" in the present invention is described as a temperature lower than the combustion point of the high-pressure gas on the high-pressure side communication port 11 side.
As shown in fig. 1 and 4, the first valve element 2 is located in the fluid passage 13, and the temperature sensing unit 5 is adapted to restrain the carrier 4 in a lock position in the valve body 1 radially inward relative to the carrier 4.
In other words, when the thermally activated pressure relief valve 100 is at the normal operating temperature, the temperature sensing unit 5 is located inside the valve body 1, and in the radial direction of the valve body 1, the temperature sensing unit 5 is located inside the bearing member 4 to press and fix the bearing member 4 at the locking position. When the carrier 4 is located at the lock position, the carrier 4 can fix the first valve element 2 in the fluid passage 13 and block the fluid passage 13, whereby the static friction force of the temperature sensing unit 5 against the carrier 4 can be balanced with the pressure of the high-pressure gas on the high-pressure side communication port 11 side received by the carrier 4 in the axial direction of the valve body 1. Therefore, the bearing piece 4 can replace the temperature sensing unit 5 to receive the gas pressure from the high-pressure container or the pipeline in the axial direction of the thermal activation pressure relief valve 100, the bearing piece 4 does not need to be subjected to high temperature to generate change, and the bearing piece 4 which is higher in strength than the temperature sensing unit 5 and is made of metal pieces can enable the working reliability of the thermal activation pressure relief valve 100 to be higher.
When a high temperature condition occurs in a vehicle collision or the like, as shown in fig. 2 and 5, the temperature sensing unit 5 is deformed under the influence of the high temperature, so that the limiting force on the bearing member 4 is removed, the fluid at the high-pressure side communication port 11 pushes the first valve element 2 to move, the first valve element 2 does not block the fluid channel 13 any longer, the high-pressure side communication port 11 is communicated with the low-pressure side communication port 12, the fluid at the high-pressure side communication port 11 can be discharged to a safe position (shown by an arrow in fig. 2 and 5) such as the external atmosphere in time through the low-pressure side communication port 12 under the action of a pressure difference, the fluid is prevented from being accumulated at the high-pressure side communication port 11 to generate explosion, and the safety of personnel in the vehicle is ensured.
Specifically, as shown in fig. 1, 2, 4 and 5, the fluid passage 13 includes: a first flow passage 131 and a second flow passage 132, the first flow passage 131 communicating with the high pressure side communication port 11, the second flow passage 132 communicating with the low pressure side communication port 12, and the carrier 4 restricted in the lock position for blocking the first spool 2 in the first flow passage 131. When the carrier 4 is in the locking position, the temperature sensing unit 5 blocks the fluid passage 13 in the first flow passage 131. The flow section of the first flow path 131 is the same as the cross-sectional area and shape of the temperature sensing unit 5, and the flow section of the first flow path 131 is larger than the flow section of the second flow path 132.
When the temperature sensing unit 5 deforms under the influence of high temperature, the first valve element 2 is no longer limited by the bearing element 4, the fluid at the high-pressure side communication port 11 pushes the first valve element 2 to move from the first flow passage 131 to the second flow passage 132 under the action of pressure difference, and because the cross-sectional area of the temperature sensing unit 5 is smaller than the flow cross-sectional area of the second flow passage 132, a fluid passage 13 is formed between the second flow passage 132 and the temperature sensing unit 5 in the second flow passage 132, so that the fluid at the high-pressure side communication port 11 is discharged to a safe position such as the external atmosphere through the low-pressure side communication port 12.
Specifically, as shown in fig. 1 to 5, the second valve core 3 is disposed in the second flow passage 132, the second valve core 3 may be fixed or positioned in the second flow passage 132 by bonding with an inner wall of the second flow passage 132, the second valve core 3 is provided with a second receiving groove 31 adapted to receive the first valve core 2, the second receiving groove 31 is a blind groove, an opening of the second receiving groove 31 faces the first valve core 2, at least a portion of the first valve core 2 extends into the second receiving groove 31, and the carrier 4 in the locking position is positioned between groove walls of the first valve core 2 and the second receiving groove 31, so that the first valve core 2 can be fixed in the fluid passage 13 to block the first flow passage 131. Meanwhile, after the temperature sensing unit 5 is deformed due to the influence of high temperature, the high-pressure fluid of the high-pressure side communication port 11 can push the first valve element 2 into the second accommodating groove 31, and thus the second accommodating groove 31 can prevent the high-pressure fluid from pushing the first valve element 2 out of the fluid channel 13.
Specifically, as shown in fig. 1 and 4, the first valve element 2 is provided with a first receiving groove 21 and a receiving through hole 22 adapted to receive the bearing element 4, the bearing element 4 is positioned in the receiving through hole 22, the receiving through hole 22 is communicated with the first receiving groove 21, and at least a part of the temperature sensing unit 5 is located in the first receiving groove 21, so that the temperature sensing unit 5 can press the bearing element 4 in the first receiving groove 21, so that the bearing element 4 is pressed and fixed against a groove wall of the second receiving groove 31 outside the first valve element 2, the limitation of the bearing element 4 at the locking position is ensured, and the first valve element 2 is ensured to block the first flow channel 131. For example, when the thermally activated pressure relief valve 100 is at a normal operating temperature, in some specific embodiments, as shown in fig. 1, the temperature sensing unit 5 is only located in the first receiving groove 21. In other specific embodiments, as shown in fig. 4, the temperature sensing unit 5 can also be located in both the first receiving groove 21 and the second receiving groove 31.
Specifically, as shown in fig. 1, 2, 4 and 5, the opening of the first receiving groove 21 is opposite to the second receiving groove 31. Therefore, the first receiving groove 21 and the second receiving groove 31 provide a larger space for the movement of the temperature sensing unit 5, and the temperature sensing unit 5 which is deformed in the first receiving groove 21 can move into the second receiving groove 31.
Specifically, as shown in fig. 1, the temperature sensing unit 5 is adapted to be supported between the bottom wall of the first receiving groove 21 and the bottom wall of the second receiving groove 31 when the thermally activated pressure relief valve 100 is at the normal operating temperature. Therefore, the temperature sensing unit 5 is firmly positioned, and effective stopping and fixing of the temperature sensing unit 5 to the bearing piece 4 are further ensured.
Specifically, as shown in fig. 2 and 5, the second spool 3 is provided with a first seal 6 on a side toward the low-pressure side communication port 12, the first seal 6 is provided with a first vent hole 61, and the second spool 3 is adapted to be supported on the first seal 6. Thereby, the first seal 6 can prevent the second spool 3 from coming out of the low pressure side communication port 12, and the first vent hole 61 can provide a flow passage for the fluid at the high pressure side communication port 11 to flow out of the low pressure side communication port 12. More specifically, the first seal 6 may be a rubber seal.
Specifically, as shown in fig. 2 and 5, the second spool 3 has a valve body flow passage 32, both ends of the valve body flow passage 32 communicate with the side wall of the second spool 3 and the bottom wall of the second spool 3 on the side toward the low-pressure side communication port 12, respectively, and the valve body flow passage 32 is adapted to communicate with the first vent hole 61. When the fluid on the high-pressure side communication port 11 side flows to the space between the second flow passage 132 and the second spool 3, it can further flow to the first vent port through the valve body flow passage 32, and the valve body flow passage 32 can provide a smoother outflow passage for the fluid on the high-pressure side communication port 11 side.
Specifically, as shown in fig. 1 and 4, the peripheral wall of the first valve body 2 is provided with the second seal 7 around on the side toward the high-pressure side communication port 11. When the first valve spool 2 blocks the fluid passage 13, the second seal 7 can provide better sealing between the first valve spool 2 and the peripheral wall of the flow passage, preventing fluid on the high-pressure-side communication port 11 side from escaping from the thermally activated pressure relief valve 100 at normal operating temperatures. More specifically, the second seal 7 may be a rubber seal.
In some embodiments, the temperature sensing unit 5 is a glass temperature sensing ball, which has a better supporting strength at a normal operating temperature, and is broken by heating at a high temperature, so that the glass temperature sensing ball is deformed to be separated from the bearing member 4, and the limiting force of the glass temperature sensing ball on the bearing member 4 is removed.
In other specific embodiments, the temperature sensing unit 5 may also be a fusible alloy piece, the fusible alloy piece has a better supporting strength at a normal operating temperature, and the fusible alloy piece is heated and melted at a high temperature, so that the fusible alloy piece deforms to separate from the bearing member 4, and the limiting force of the fusible alloy piece on the bearing member 4 is removed.
The pressure vessel of the embodiment of the present invention is described below.
The pressure vessel of the embodiments of the present invention is provided with a thermally activated pressure relief valve 100 according to any of the above embodiments of the present invention, and the thermally activated pressure relief valve 100 may be installed on a high pressure gas cylinder or/and a pipeline of the pressure vessel.
According to the pressure container provided by the embodiment of the invention, the thermal activation pressure relief valve 100 is arranged, so that gas can be prevented from escaping through the thermal activation pressure relief valve 100 when the pressure container works normally, and the pressure container works reliably.
In some specific embodiments, the pressure vessel may be part of a vehicle's hydrogen-oxygen fuel cell, such as a high pressure hydrogen cylinder.
A vehicle of an embodiment of the invention is described below.
The vehicle of the embodiment of the invention is provided with the pressure vessel as in any one of the above-described embodiments of the invention.
According to the vehicle provided by the embodiment of the invention, the operation of the vehicle is reliable by arranging the pressure container.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A thermally activated pressure relief valve (100), comprising: the temperature sensing valve comprises a valve body (1), a bearing piece (4), a temperature sensing unit (5), a first valve core (2) and a second valve core (3), wherein the valve body is provided with a high-pressure side communication port (11) and a low-pressure side communication port (12), a fluid channel (13) is connected between the high-pressure side communication port (11) and the low-pressure side communication port (12), and the first valve core (2) is positioned in the fluid channel (13);
the first valve core (2) is provided with a first accommodating groove (21) and an accommodating through hole (22) for accommodating the bearing piece (4), the second valve core (3) is provided with a second accommodating groove (31) suitable for accommodating the first valve core (2), and an opening of the first accommodating groove (21) is opposite to the second accommodating groove (31);
when the temperature sensing unit (5) is in a normal state, the temperature sensing unit (5) is axially supported between the first valve core (2) and the second valve core (3), the bearing piece (4) is located at a locking position, the first valve core (2) blocks the fluid channel (13), the bearing piece (4) is positioned in the accommodating through hole (22), at least part of the bearing piece (4) protrudes out of the accommodating through hole (22) and abuts against the second valve core (3) to axially support the bearing piece (4), and the first valve core (2) and the second valve core (3) jointly limit the axial balance of the bearing piece (4); one side of the bearing piece (4) facing the temperature sensing unit (5) is stopped against the temperature sensing unit (5) to limit the radial movement of the bearing piece (4), and the temperature sensing unit (5) and the second valve core (3) jointly limit the radial balance of the bearing piece (4);
when the temperature sensing unit (5) deforms, the bearing piece (4) loses the radial limitation of the temperature sensing unit (5), the bearing piece (4) moves towards the first accommodating groove (21), and the first valve core (2) moves relative to the second valve core (3) along the axial direction under the action of external force so as to enable the high-pressure side communication port (11) to be communicated with the low-pressure side communication port (12).
2. A thermally activated pressure relief valve (100) as claimed in claim 1 wherein the fluid passage (13) comprises: the valve body comprises a first flow passage (131) and a second flow passage (132), the flow cross-sectional area of the first flow passage (131) is smaller than that of the second flow passage (132), the first flow passage (131) is communicated with the high-pressure side communication port (11), the second flow passage (132) is communicated with the low-pressure side communication port (12), and the bearing piece (4) limited at the locking position is used for enabling the first valve core (2) to be blocked in the first flow passage (131).
3. A thermally activated pressure relief valve (100) as claimed in claim 1 wherein the second receiving groove (31) is a blind groove, the second receiving groove (31) opening opposite the first spool (2), at least a portion of the first spool (2) extending into the second receiving groove (31), the carrier (4) in the locked position being positioned between the first spool (2) and a groove wall of the second receiving groove (31).
4. A thermally activated pressure relief valve (100) as claimed in claim 3 wherein at least part of the temperature sensitive unit (5) is adapted to locate within the first receiving groove (21) and restrain the carrier (4) in the locked position.
5. A thermally activated pressure relief valve (100) as claimed in claim 1 wherein the temperature sensing unit (5) is adapted to be supported between the bottom wall of the first receiving tank (21) and the bottom wall of the second receiving tank (31).
6. A thermally activated pressure relief valve (100) as claimed in claim 3, wherein the second spool (3) is provided with a first seal (6) on a side facing the low pressure side communication port (12), the first seal (6) being provided with a first vent hole (61), the second spool (3) being adapted to be supported on the first seal (6).
7. A thermally activated pressure relief valve (100) as claimed in claim 6 wherein the second spool (3) has a valve body flow passage (32), both ends of the valve body flow passage (32) communicating with a side wall of the second spool (3) and a bottom wall of a side of the second spool (3) facing the low pressure side communication port (12), respectively, the valve body flow passage (32) being adapted to communicate with the first vent hole (61).
8. A thermally activated pressure relief valve (100) as claimed in claim 1 wherein the peripheral wall of the first spool (2) is provided with a second seal (7) around the side facing the high pressure side communication port (11).
9. A thermally activated pressure relief valve (100) as claimed in any of claims 1 to 8, wherein the temperature sensing unit (5) is a glass temperature sensing bulb or a piece of fusible alloy.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917027.XA CN112555478B (en) | 2019-09-26 | 2019-09-26 | Thermally activated pressure relief valve |
| PCT/CN2020/116804 WO2021057716A1 (en) | 2019-09-26 | 2020-09-22 | Thermally activated pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917027.XA CN112555478B (en) | 2019-09-26 | 2019-09-26 | Thermally activated pressure relief valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112555478A CN112555478A (en) | 2021-03-26 |
| CN112555478B true CN112555478B (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910917027.XA Active CN112555478B (en) | 2019-09-26 | 2019-09-26 | Thermally activated pressure relief valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112555478B (en) |
| WO (1) | WO2021057716A1 (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29820264U1 (en) * | 1998-11-12 | 1999-01-14 | Streif, Hans, Magliaso, Lugano | Temperature sensitive shut-off valve |
| CN101031743A (en) * | 2004-09-17 | 2007-09-05 | 博世力士乐股份有限公司 | Sealing bush, hydraulic unit, and check valve |
| CN202315055U (en) * | 2011-11-04 | 2012-07-11 | 洪雄科 | Temperature sensing valve |
| CN103443517A (en) * | 2011-03-14 | 2013-12-11 | 艾莫股份公司 | Relief device, in particular for gas systems |
| CN204083410U (en) * | 2014-10-15 | 2015-01-07 | 常景泓 | Multifunctional fire-proof safety valves for gas |
| RU157231U1 (en) * | 2015-04-24 | 2015-11-27 | Елена Сергеевна Лазарева | THERMAL VALVE |
| CN105757292A (en) * | 2016-04-15 | 2016-07-13 | 厦门松霖科技有限公司 | Bathtub cold water drainage device |
| CN206159588U (en) * | 2016-10-25 | 2017-05-10 | 日丰企业集团有限公司 | Thalposis stop valve |
| CN109236614A (en) * | 2018-11-01 | 2019-01-18 | 南京尚爱机械制造有限公司 | A kind of thermostat valve of piston compressor control cylinder cooling water flow |
| CN208919425U (en) * | 2018-08-02 | 2019-05-31 | 上海舜华新能源系统有限公司 | A kind of high pressure gas cylinder safety relief device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1394323B1 (en) * | 2009-05-25 | 2012-06-06 | Cavagna Group Spa | SAFETY DEVICE FOR VALVES AND / OR VESSELS IN PRESSURE |
| EP3215782A4 (en) * | 2014-11-05 | 2018-07-04 | Luxfer Canada Limited | Thermal pressure relief device |
| DE102016106328B4 (en) * | 2016-04-06 | 2021-12-16 | Mesa Parts GmbH | Device for the temperature-dependent reduction of the pressure of a medium stored in a pressure tank |
| CN207161809U (en) * | 2017-06-17 | 2018-03-30 | 嘉兴依相动力科技有限公司 | A kind of temperature safety apparatus of cylinder valve |
| CN107289163A (en) * | 2017-06-30 | 2017-10-24 | 上海百图低温阀门有限公司 | Automobile-used high pressure compressed hydrogen cylinder safety device |
| CN207454847U (en) * | 2017-11-24 | 2018-06-05 | 丹阳市飞轮气体阀门有限公司 | A kind of safe pressure relief device for gas cylinder |
-
2019
- 2019-09-26 CN CN201910917027.XA patent/CN112555478B/en active Active
-
2020
- 2020-09-22 WO PCT/CN2020/116804 patent/WO2021057716A1/en active Application Filing
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29820264U1 (en) * | 1998-11-12 | 1999-01-14 | Streif, Hans, Magliaso, Lugano | Temperature sensitive shut-off valve |
| CN101031743A (en) * | 2004-09-17 | 2007-09-05 | 博世力士乐股份有限公司 | Sealing bush, hydraulic unit, and check valve |
| CN103443517A (en) * | 2011-03-14 | 2013-12-11 | 艾莫股份公司 | Relief device, in particular for gas systems |
| CN202315055U (en) * | 2011-11-04 | 2012-07-11 | 洪雄科 | Temperature sensing valve |
| CN204083410U (en) * | 2014-10-15 | 2015-01-07 | 常景泓 | Multifunctional fire-proof safety valves for gas |
| RU157231U1 (en) * | 2015-04-24 | 2015-11-27 | Елена Сергеевна Лазарева | THERMAL VALVE |
| CN105757292A (en) * | 2016-04-15 | 2016-07-13 | 厦门松霖科技有限公司 | Bathtub cold water drainage device |
| CN206159588U (en) * | 2016-10-25 | 2017-05-10 | 日丰企业集团有限公司 | Thalposis stop valve |
| CN208919425U (en) * | 2018-08-02 | 2019-05-31 | 上海舜华新能源系统有限公司 | A kind of high pressure gas cylinder safety relief device |
| CN109236614A (en) * | 2018-11-01 | 2019-01-18 | 南京尚爱机械制造有限公司 | A kind of thermostat valve of piston compressor control cylinder cooling water flow |
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| Publication number | Publication date |
|---|---|
| WO2021057716A1 (en) | 2021-04-01 |
| CN112555478A (en) | 2021-03-26 |
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