CN211371398U - Relief device for high-pressure hydrogen integrated cylinder valve - Google Patents
Relief device for high-pressure hydrogen integrated cylinder valve Download PDFInfo
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- CN211371398U CN211371398U CN201922141713.0U CN201922141713U CN211371398U CN 211371398 U CN211371398 U CN 211371398U CN 201922141713 U CN201922141713 U CN 201922141713U CN 211371398 U CN211371398 U CN 211371398U
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Abstract
The utility model discloses a relief device for a high-pressure hydrogen integrated cylinder valve, which relates to the technical field of high-pressure hydrogen integrated cylinder valves and comprises a TPRD valve body, a fusible plug cap, a heat conducting cap, a bearing rod and a sealing conical head, wherein the TPRD valve body is internally provided with an accommodating cavity with an open upper part and a gas channel communicated with the outside; the bolt dissolving cap is in threaded connection with the upper part of the accommodating cavity, the lower end part of the bolt dissolving cap is provided with an alloy accommodating cavity, and fusible alloy is cast; the heat conducting cap is abutted against the fusible alloy, and a guide hole is formed in the lower end face of the heat conducting cap; the upper end of the pressure bearing rod is inserted into the guide hole, and a disc spring is arranged between the pressure bearing rod and the heat conducting cap; the upper end of the sealing conical head is embedded into the mounting groove at the bottom of the bearing rod; the utility model discloses an install on the valve body after each part of bleeder mechanism assembles, can save when the integrated cylinder valve of high-pressure hydrogen assembles, the powerful elasticity that multi-disc belleville spring produced can make sealed conical head take place permanent deformation back, still can realize sealedly with gas passage.
Description
Technical Field
The utility model relates to a technical field of the integrated cylinder valve of high-pressure hydrogen especially relates to a discharge device for the integrated cylinder valve of high-pressure hydrogen.
Background
The high-pressure hydrogen integrated cylinder valve is arranged on a hydrogen storage cylinder of a fuel cell automobile and used for controlling the on-off of hydrogen in the hydrogen storage cylinder. In view of safety, weight reduction, and cost reduction of the hydrogen fuel cell vehicle, and reduction of leakage points, the more functions the cylinder valve for the vehicle has, the fewer valves and pipes are required for the front end pipe of the fuel cell. The highly integrated cylinder valve is the optimal scheme of the whole vehicle. The discharge device belongs to a part of a high-pressure hydrogen integrated cylinder valve, is known as an important container safety matching device, and prevents serious accidents such as explosion of the hydrogen storage cylinder and the like under ultrahigh-pressure and ultrahigh-temperature operating environments.
The prior Chinese patent with publication number CN205715862U discloses a combined safety relief device for a high-pressure gas cylinder valve, which comprises a fusible plug valve, a heat conducting cap, a pressure-bearing rod and a spring, wherein an easily-soluble alloy block is arranged in an alloy containing cavity of the fusible plug valve, and the pressure-bearing rod is connected with an air vent through a sealing structure.
By adopting the scheme, the safety relief device is directly arranged in the shell of the high-pressure gas cylinder valve, and the fusible plug valve, the heat conducting cap, the pressure bearing rod, the spring and other components are not easy to install in the shell, so that the sealing performance is reduced after long-time use, and hydrogen leakage is caused.
SUMMERY OF THE UTILITY MODEL
To the problem of above-mentioned production, the utility model aims to provide a relief device for integrated cylinder valve of high-pressure hydrogen.
In order to realize the purpose, the utility model discloses the technical scheme who takes does:
a discharge Device for a high-pressure hydrogen integrated cylinder valve comprises a TPRD (thermal pressure relief Device) valve body, wherein an accommodating cavity with an open upper part is arranged inside the TPRD valve body, and a gas channel communicated with the outside is downwards arranged at the bottom of the accommodating cavity; the bolt dissolving cap is in threaded connection with the upper part of the accommodating cavity, an alloy accommodating cavity is formed in the lower end part of the bolt dissolving cap, and fusible alloy is cast in the alloy accommodating cavity; the heat conduction cap is arranged in the containing cavity, the upper end of the heat conduction cap is inserted into the alloy containing cavity, the upper end face of the heat conduction cap abuts against the lower end face of the fusible alloy, and a guide hole is formed in the middle of the lower end face of the heat conduction cap; the upper end of the pressure bearing rod is inserted into the guide hole, a disc spring is arranged between the pressure bearing rod and the heat conducting cap, one end of the disc spring is connected to the heat conducting cap, the other end of the disc spring is connected to the pressure bearing rod, and the bottom of the pressure bearing rod is provided with a mounting groove; the upper end of the sealing conical head is embedded into the mounting groove, the lower end of the sealing conical head is in an inverted cone shape, and sealing is formed between the sealing conical head and the gas channel.
The release device for the high-pressure hydrogen integrated cylinder valve is characterized in that the pressure-bearing rod is of an integrated structure, the pressure-bearing rod is in a shape like a Chinese character 'tu', the pressure-bearing rod comprises a pressure-bearing rod body and an installation limiting part, the installation limiting part is arranged at the lower end of the pressure-bearing rod body, the upper end of the pressure-bearing rod body is inserted into the guide hole, and the installation groove is formed in the bottom of the installation limiting part.
The above relief device for the high-pressure hydrogen integrated cylinder valve is characterized in that the disc spring is sleeved on the pressure bearing rod body, one end of the disc spring is connected to the lower end of the heat conducting cap, and the other end of the disc spring is connected to the upper end of the installation limiting part.
Preferably, the number of the disc springs is multiple, and the disc springs are all arranged between the heat conduction cap and the installation limiting part.
The relief device for the high-pressure hydrogen integrated cylinder valve is characterized in that the fusible plug cap is provided with an alloy discharge hole, and the alloy discharge hole is communicated with the alloy containing cavity.
The above-mentioned release device for high-pressure hydrogen integrated cylinder valve, wherein, the lateral wall of the TPRD valve body is provided with a gas release port, the gas release port penetrates through the lateral wall of the TPRD valve body, and the gas release port is communicated with the accommodating cavity.
The above-mentioned discharge device for the high-pressure hydrogen integrated cylinder valve, wherein, the outer wall at the middle part of the TPRD valve body is provided with a first groove, the first groove is located above the gas discharge port, and the first groove is internally provided with a first O-shaped ring.
The above-mentioned discharge device for high-pressure hydrogen integrated cylinder valve, wherein, set up slot two on the outer wall of the lower extreme of TPRD valve body, be provided with O type circle two and retaining ring in the slot two.
Preferably, the sealing cone head is made of plastic.
The utility model discloses owing to adopt above-mentioned technique, make it compare the positive effect that has with prior art and be:
1. the utility model discloses a bleeder mechanism is automatic to be released under hydrogen storage cylinder ultra-temperature operation environment, is applicable to the integrated cylinder valve of 70MPa high pressure hydrogen, installs again on the valve body of the integrated cylinder valve of valve body high pressure hydrogen after each part of bleeder mechanism assembles, and simple to operate can save when the integrated cylinder valve of high pressure hydrogen assembles.
2. The utility model discloses a discharge apparatus adopts multi-disc belleville spring, and the powerful elasticity of its production can make sealed conical head take place the permanent deformation back, still can realize sealing with gas passage, improves the sealing reliability.
3. The utility model discloses a discharge device increases area of contact, reduces the pressurized pressure through the heat conduction cap, can effectively solve the problem of fusible alloy creep.
Drawings
Fig. 1 is a cross-sectional view of a relief device for a high pressure hydrogen integrated cylinder valve of the present invention;
fig. 2 is the working principle schematic diagram of the high-pressure hydrogen integrated cylinder valve in the over-temperature working environment of the utility model.
In the drawings: 1. a TPRD valve body; 11. a gas channel; 12. a gas vent; 13. a first O-shaped ring; 14. an O-shaped ring II; 15. a retainer ring; 2. a bolt dissolving cap; 3. a fusible alloy; 4. a heat conducting cap; 5. a pressure-bearing rod; 51. a pressure-bearing rod body; 52. installing a limiting part; 6. a disc spring; 7. sealing the conical head; 8. a valve body; 81. a safety vent; 82. and (4) a vent hole.
Detailed Description
An object of the utility model is to provide a relief device for integrated cylinder valve of high-pressure hydrogen, this relief device's structural design is simple, and simple to operate, can save when the integrated cylinder valve of high-pressure hydrogen assembles, improves the work efficiency of assembly, and leakproofness and security are better.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 is a sectional view of a discharging device for a high pressure hydrogen integrated cylinder valve according to the present invention, and fig. 2 is a schematic view of the working principle of the high pressure hydrogen integrated cylinder valve in an over-temperature working environment according to the present invention.
The embodiment of the utility model provides a what a bleeder mechanism was used for integrated cylinder valve of high-pressure hydrogen installs on the valve body 8 of the integrated cylinder valve of high-pressure hydrogen, and the integrated cylinder valve of high-pressure hydrogen is installed on fuel cell car hydrogen storage cylinder, is equipped with the safe bleeder hole 81 with external intercommunication and accesss to the inside air vent 82 of high-pressure cylinder on the valve body 8, and bleeder mechanism is used for controlling the intercommunication state between safe bleeder hole 81 and the air vent 82.
Wherein, the bleeder device includes: TPRD valve body 1, the thrombolytic cap 2, heat conduction cap 4, pressure-bearing rod 5 and sealed conical head 7, TPRD valve body 1 sets up in valve body 8, TPRD valve body 1's lower extreme inserts in valve body 8's air vent 82, TPRD valve body 1's inside is provided with the open chamber that holds in upper portion, the bottom that holds the chamber is provided with gas passage 11 with outside intercommunication downwards, it is linked together with gas passage 11 to hold the chamber, thrombolytic cap 2 threaded connection holds chamber upper portion, thrombolytic cap 2's lower tip has been seted up the alloy and has been held the chamber, the alloy holds intracavity hot melt casting fusible alloy 3.
During installation, the vent device is prefabricated, after the valve body 8 is installed outside, the TPRD valve body 1 is installed in the valve body 8, the fusible plug cap 2 is rotated to move downwards in the TPRD valve body 1, the fusible alloy 3 drives the heat conducting cap 4, the pressure bearing rod 5 and the sealing conical head 7 to synchronously move downwards, the belleville spring 6 is in a compressed state, and the lower end of the sealing conical head 7 is inserted into the gas channel 11 to realize sealing.
This embodiment is through setting up heat conduction cap 4 in the upper end of pressure-bearing rod 5, can avoid pressure-bearing rod 5 and 3 direct contact of fusible gold, can increase area of contact through using heat conduction cap 4, reduce the pressure intensity, can effectively solve the problem of 3 creeps of fusible alloy, when 3 reaches melting temperature of fusible alloy, heat conduction cap 4 extrudees fusible alloy 3 under the 6 effort of belleville spring and makes it flow out fusible plug cap 2, heat conduction cap 4, pressure-bearing rod 5 and sealed conical head 7 all upwards move under the effect of the interior hydrogen pressure force of gas channel 11, heat conduction cap 4 pushes up the alloy and holds the intracavity, gas channel 11 is kept away from to sealed conical head 7, make the interior gas of bottle discharge to safe bleeder hole 81 from gas channel 11.
Further, sealed conical head 7 adopts the plastics material, and plastics material intensity is far less than the metal, is favorable to the laminating between sealed conical head 7 and the gas passage 11, and is sealed effectual, and the quantity of belleville spring 6 is the multi-disc, and a thrust towards gas passage 11 is applyed to sealed conical head 7 simultaneously to multi-disc belleville spring 6 for after sealed conical head 7 takes place permanent deformation, still can sticis on gas passage 11, improves sealed life-span and reliability.
It should be noted that the terms "upper" and "lower" as used herein are defined with reference to the relative positions of the components in fig. 1 and 2, and are used for clarity and convenience of description, and it should be understood that the scope of the present application is not limited by the use of the terms.
In addition, the pressure-bearing rod 5 is of an integrated structure, the pressure-bearing rod 5 is in a shape like a Chinese character 'tu', the pressure-bearing rod 5 comprises a pressure-bearing rod body 51 and an installation limiting part 52, the installation limiting part 52 is arranged at the lower end of the pressure-bearing rod body 51, the upper end of the pressure-bearing rod body 51 is inserted into the guide hole, the installation groove is formed in the bottom of the installation limiting part 52, the diameter of the installation limiting part 52 is larger than that of the pressure-bearing rod body 51, and the installation of the sealing conical head 7 is.
Further optimizing the above embodiment, the disc spring 6 is sleeved on the pressure-bearing rod body 51, one end of the disc spring 6 is connected to the lower end of the heat-conducting cap 4, the other end of the disc spring 6 is connected to the upper end of the installation limiting portion 52, and a part of the disc spring 6 acts on the installation limiting portion 52 to drive the sealing conical head 7 to seal the gas channel 11.
In the embodiment of the present invention, the thrombolytic cap 2 is provided with an alloy discharge hole (not shown in the figure), which is communicated with the alloy containing cavity, so as to enable the melted fusible alloy 3 to flow out faster and accelerate the release speed after over-temperature.
Further optimize above-mentioned embodiment, seted up gas escape hole 12 on the lateral wall of TPRD valve body 1, gas escape hole 12 runs through the lateral wall of TPRD valve body 1, and gas escape hole 12 is linked together with holding the chamber, and sealed conical head 7 keeps away from gas channel 11 back for gas in the bottle is discharged from air vent 82, gas channel 11, holds chamber, gas escape hole 12 and safe bleed hole 81 in proper order. The arrows in the figure indicate the direction of the air flow.
Further, groove one has been seted up on the outer wall at the middle part of TPRD valve body 1, groove one is located the top of gaseous discharge port 12, be provided with O type circle 13 in the groove one, it is sealed to form between O type circle 13 and the valve body 8, make hydrogen can not discharge from TPRD valve body 1, can only discharge from safe discharge hole 81, groove two has been seted up on the outer wall of TPRD valve body 1's lower extreme, be provided with O type circle two 14 and retaining ring 15 in the groove two, O type circle two 14 and retaining ring 15 all with air vent 82's inner wall between form sealedly, avoid hydrogen to take place to leak, leakproofness and security are better.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A relief device for a high pressure hydrogen integrated cylinder valve, comprising:
the TPRD valve body (1), an accommodating cavity with an open upper part is arranged inside the TPRD valve body (1), and a gas channel (11) communicated with the outside is downwards arranged at the bottom of the accommodating cavity;
the bolt dissolving cap (2) is in threaded connection with the upper portion of the accommodating cavity, an alloy accommodating cavity is formed in the lower end portion of the bolt dissolving cap (2), and fusible alloy (3) is cast in the alloy accommodating cavity;
the heat conduction cap (4) is arranged in the containing cavity, the upper end of the heat conduction cap (4) is inserted into the alloy containing cavity, the upper end face of the heat conduction cap (4) is abutted against the lower end face of the fusible alloy (3), and a guide hole is formed in the middle of the lower end face of the heat conduction cap (4);
the upper end of the pressure-bearing rod (5) is inserted into the guide hole, a disc spring (6) is arranged between the pressure-bearing rod (5) and the heat-conducting cap (4), one end of the disc spring (6) is connected to the heat-conducting cap (4), the other end of the disc spring is connected to the pressure-bearing rod (5), and the bottom of the pressure-bearing rod (5) is provided with a mounting groove;
the upper end of the sealing conical head (7) is embedded into the mounting groove, the lower end of the sealing conical head (7) is in an inverted cone shape, and the sealing conical head (7) and the gas channel (11) are sealed.
2. The relief device for the high-pressure hydrogen integrated cylinder valve according to claim 1, wherein the pressure-bearing rod (5) is of an integrated structure, the pressure-bearing rod (5) is of a convex shape, the pressure-bearing rod (5) comprises a pressure-bearing rod body (51) and an installation limiting portion (52), the installation limiting portion (52) is arranged at the lower end of the pressure-bearing rod body (51), the upper end of the pressure-bearing rod body (51) is inserted into the guide hole, and the installation groove is formed at the bottom of the installation limiting portion (52).
3. The relief device for the high-pressure hydrogen integrated cylinder valve according to claim 2, wherein the belleville spring (6) is sleeved on the pressure bearing rod body (51), one end of the belleville spring (6) is connected to the lower end of the heat conducting cap (4), and the other end of the belleville spring (6) is connected to the upper end of the installation limiting part (52).
4. The relief device for the high-pressure hydrogen integrated cylinder valve according to claim 1, wherein the fusible plug cap (2) is provided with an alloy discharge hole, and the alloy discharge hole is communicated with the alloy accommodating cavity.
5. The relief device for the high-pressure hydrogen integrated cylinder valve according to claim 1, wherein a gas relief port (12) is opened on a sidewall of the TPRD valve body (1), the gas relief port (12) penetrates through the sidewall of the TPRD valve body (1), and the gas relief port (12) is communicated with the accommodating cavity.
6. The relief device for the high-pressure hydrogen integrated cylinder valve according to claim 5, wherein a first groove is formed in the outer wall of the middle part of the TPRD valve body (1), the first groove is located above the gas release port (12), and a first O-ring (13) is arranged in the first groove.
7. The relief device for the high-pressure hydrogen integrated cylinder valve according to claim 1, wherein a second groove is formed in the outer wall of the lower end of the TPRD valve body (1), and an O-ring (14) and a retainer ring (15) are arranged in the second groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922141713.0U CN211371398U (en) | 2019-12-04 | 2019-12-04 | Relief device for high-pressure hydrogen integrated cylinder valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922141713.0U CN211371398U (en) | 2019-12-04 | 2019-12-04 | Relief device for high-pressure hydrogen integrated cylinder valve |
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| Publication Number | Publication Date |
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| CN211371398U true CN211371398U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922141713.0U Active CN211371398U (en) | 2019-12-04 | 2019-12-04 | Relief device for high-pressure hydrogen integrated cylinder valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198347A (en) * | 2021-12-15 | 2022-03-18 | 中国石化销售股份有限公司华南分公司 | Hydraulic control system of safety cut-off valve |
| CN114321466A (en) * | 2021-12-15 | 2022-04-12 | 中国石化销售股份有限公司华南分公司 | Fireproof relief valve |
| CN114370524A (en) * | 2021-12-15 | 2022-04-19 | 西安航天动力研究所 | Fireproof emergency shutdown electro-hydraulic control system |
| US11788638B2 (en) | 2022-02-22 | 2023-10-17 | Hyundai Motor Company | Pressure relief device |
-
2019
- 2019-12-04 CN CN201922141713.0U patent/CN211371398U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198347A (en) * | 2021-12-15 | 2022-03-18 | 中国石化销售股份有限公司华南分公司 | Hydraulic control system of safety cut-off valve |
| CN114321466A (en) * | 2021-12-15 | 2022-04-12 | 中国石化销售股份有限公司华南分公司 | Fireproof relief valve |
| CN114370524A (en) * | 2021-12-15 | 2022-04-19 | 西安航天动力研究所 | Fireproof emergency shutdown electro-hydraulic control system |
| CN114321466B (en) * | 2021-12-15 | 2024-03-19 | 中国石油化工股份有限公司 | Fireproof relief valve |
| CN114198347B (en) * | 2021-12-15 | 2024-03-19 | 中国石油化工股份有限公司 | Safety cut-off valve hydraulic control system |
| US11788638B2 (en) | 2022-02-22 | 2023-10-17 | Hyundai Motor Company | Pressure relief device |
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