Hydrogen storage bottle tail valve for hydrogen energy vehicle

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By placing the heat relief port in the central position in the tail valve of the hydrogen storage bottle for hydrogen energy vehicles and equipped with a pressure relief component and a sealing component, the pipe twisting and stress increase caused by the non-center position of the heat relief port in the prior art is solved, and higher stability, adaptability and safety are achieved.

CN222911364UActive Publication Date: 2025-05-27CHANGZHOU SHENYING CARBON FIBER COMPOSITES CO LTD

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Patent Information

Application Number: CN202421226221.6
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-05-31
Publication Date: 2025-05-27
Estimated Expiration: 2034-05-31

AI Technical Summary

Technical Problem

The heat relief port of the tail valve of the existing hydrogen storage bottle for hydrogen energy vehicles is usually in a non-center position, resulting in the hydrogen storage pipeline that may be twisted or subjected to uneven force when rotating, increasing stress and wear, and reducing the stability and reliability of the connection.

Method used

A hydrogen storage bottle tail valve for hydrogen energy vehicles is designed. The heat relief port is placed in the center of the valve body of the bottle tail valve and is equipped with a pressure relief component, including TPRD glass bubbles and valve cores, ensuring that hydrogen can be discharged quickly in unexpected situations, and at the same time, the sealing component is used to adapt to the hydrogen storage bottle pressure of 35MPa and 70MPa.

Benefits of technology

By placing the heat relief port in the center, the problems of pipeline twisting and uneven stress are avoided, the stability and adaptability of the connection are enhanced, and hydrogen can be quickly discharged in unexpected situations, improving safety.

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Patent Text Reader

Abstract

The hydrogen storage bottle tail valve for the hydrogen energy vehicle comprises a bottle tail valve body, a third air channel is formed in the center of the interior of the bottle tail valve body, a heat pressure relief opening is formed in the center of the top of the third air channel, a fixing groove is formed in the bottle tail valve body, a pressure relief assembly is fixedly installed in the fixing groove, and a pressure relief valve is arranged in the pressure relief assembly. Belongs to the technical field of new energy automobiles. By the aid of the pressure relief component, when accidents such as fire disasters occur during running of the hydrogen energy vehicle, hydrogen in a bottle can be quickly released after the TPRD glass bulb is heated and broken, safety can be better guaranteed when accidents occur, the thermal pressure relief opening is positioned in the center of the valve body of the bottle tail valve, and the bottle tail valve is screwed to any angle when the thermal pressure relief opening is connected with a hydrogen storage pipeline, so that the safety of the hydrogen energy vehicle is guaranteed. According to the bottle tail valve, installation of a hydrogen storage pipeline is not affected when the bottle tail valve body is installed, adaptability is enhanced, by arranging the first sealing assembly and the second sealing assembly, the bottle tail valve body can be used for sealed connection of hydrogen storage bottles with the two pressures of 35 MPa and 70 MPa, and adaptability and diversity are enhanced.

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Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, in particular to a tail valve of a hydrogen storage bottle for a hydrogen energy vehicle. Background Technique

[0002] Hydrogen energy has always been the focus of attention in the global energy community. Fuel cell vehicles are one of the important fields on the road of hydrogen energy application and development. The thermal relief port in the tail valve of a hydrogen storage bottle for a hydrogen energy vehicle is a device designed to safely release overpressure hydrogen. When the temperature of the thermal relief port reaches a certain level, the thermal relief port will automatically open to release some hydrogen.

[0003] In the existing tail valve of a hydrogen storage bottle for a hydrogen energy vehicle, the thermal relief port is usually located at a non - central position of the valve body of the tail valve. When connected to the hydrogen storage pipeline, the hydrogen storage pipeline is at a non - central position of the tail valve. When the tail valve rotates, it may cause distortion or uneven stress at the pipeline connection, thereby increasing the stress and possible wear at the pipeline connection, reducing the stability and reliability of the connection. And the non - central position of the hydrogen storage pipeline may cause difficulties for operators during installation and maintenance, requiring more adjustments and attention, thus increasing the complexity and time consumption of the operation. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides a tail valve of a hydrogen storage bottle for a hydrogen energy vehicle, which solves the problem that the thermal relief port of the existing tail valve of a hydrogen storage bottle for a hydrogen energy vehicle is located at a non - central position of the valve body of the tail valve. When the tail valve rotates, it may cause distortion or uneven stress at the pipeline connection, thereby increasing the stress and possible wear at the pipeline connection, reducing the stability and reliability of the connection.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A tail valve of a hydrogen storage bottle for a hydrogen energy vehicle, including a valve body of the tail valve. An air passage one is opened at the inner bottom end of the valve body of the tail valve. An air passage two is opened inside the valve body of the tail valve. An air passage three is opened at the central part inside the valve body of the tail valve. A thermal relief port is opened at the central part of the top of the air passage three. A fixing groove is opened inside the valve body of the tail valve. A pressure relief component is fixedly installed inside the fixing groove. One of the first sealing component or the second sealing component is arranged at the bottom end of the outer surface of the valve body of the tail valve;

[0006] The pressure relief component includes a lock nut threadedly and fixedly installed inside the fixed groove. A first sealing ring is fixedly installed inside the valve body of the bottle tail valve. A TPRD glass bulb is placed inside the lock nut. A valve core is sleeved at one end of the TPRD glass bulb away from the lock nut. An installation groove is formed on the outer surface of the valve core. A gasket ring is fixedly sleeved inside the installation groove. A spring is movably sleeved on the outer surface of the valve core. One end of the valve core away from the lock nut is integrally connected with a valve core tail rod. A gasket is fixedly connected to one end of the valve core tail rod away from the valve core. A third sealing ring is fixedly connected to the end of the valve core tail rod.

[0007] Preferably, the outer surface of the valve core tail rod is inserted into the second air passage. The second air passage is connected to the top of the valve body of the bottle tail valve through a third air passage and a thermal pressure relief port.

[0008] Preferably, the second air passage is connected to the bottom of the valve body of the bottle tail valve through a first air passage. The gasket is hermetically and slidably connected inside the second air passage through the third sealing ring.

[0009] Preferably, under normal conditions, due to the elasticity of the spring, both ends of the TPRD glass bulb are respectively abutted against by the lock nut and the inner wall of the valve core.

[0010] Preferably, the top of the valve body of the bottle tail valve is hexagonal. The outer diameter of the bottom of the valve body of the bottle tail valve is smaller than the diagonal length of the top. The lock nut is hermetically connected inside the fixed groove through the first sealing ring. The inner wall of the first sealing ring is hermetically fitted on the outer surface of the lock nut.

[0011] Preferably, the first sealing component includes a thread provided on the outer surface of the valve body of the bottle tail valve and a sealing ring fixedly sleeved on the outer surface of the valve body of the bottle tail valve.

[0012] The second sealing component includes an external thread formed on the outer surface of the valve body of the bottle tail valve and a first retaining ring, a second retaining ring, and a fourth sealing ring sleeved on the outer surface of the valve body of the bottle tail valve.

[0013] Beneficial effects

[0014] The present utility model provides a bottle tail valve for a hydrogen energy vehicle hydrogen storage bottle. Compared with the prior art, the following

[0015] beneficial effects are achieved:

[0016] 1. For the bottle tail valve of the hydrogen energy vehicle hydrogen storage bottle, by providing a pressure relief component, when an accident such as a fire occurs during the driving of the hydrogen energy vehicle, after the TPRD glass bulb is heated and broken, the hydrogen in the bottle can be quickly discharged. It can better ensure safety in case of an accident. Since the thermal pressure relief port is located at the center of the valve body of the bottle tail valve, when the bottle tail valve is screwed to any angle when connected to the hydrogen storage pipeline, it does not affect the installation of the hydrogen storage pipeline, enhancing the adaptability.

[0017] 2. The hydrogen storage bottle tail valve for hydrogen energy vehicles can be hermetically connected to hydrogen storage bottles with two pressures of 35 MPa and 70 MPa by setting the first sealing component and the second sealing component, which enhances the adaptability and diversity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural view of the tail valve body and the first sealing component in the present utility model;

[0019] Figure 2 It is a sectional view of the present utility model;

[0020] Figure 3 It is a schematic structural view of the pressure relief component in the present utility model;

[0021] Figure 4 It is an exploded view of the pressure relief component in the present utility model;

[0022] Figure 5 It is a schematic structural view of the tail valve body and the second sealing component in the present utility model.

[0023] In the figure: 1. Tail valve body; 2. First air passage; 3. Second air passage; 4. Third air passage; 5. Thermal pressure relief port; 6. Fixed groove; 7. Pressure relief component; 71. Locking nut; 72. First sealing ring; 73. TPRD glass bulb; 74. Valve core; 75. Installation groove; 76. Pad ring; 77. Spring; 78. Valve core tail rod; 79. Gasket; 710. Third sealing ring; 8. First sealing component; 81. Thread; 82. Sealing ring; 9. Second sealing component; 91. External thread; 92. First retaining ring; 93. Second retaining ring; 94. Fourth sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] Please refer to Figures 1-4, the present utility model provides a technical solution: a hydrogen storage bottle tail valve for a hydrogen energy vehicle, including a tail valve body 1. The top of the tail valve body 1 is hexagonal, and the outer diameter of the bottom of the tail valve body 1 is smaller than the diagonal length of the top. An air passage 1 is opened at the inner bottom end of the tail valve body 1, and an air passage 2 is opened inside the tail valve body 1. The inside of the air passage 2 is connected to the bottom of the tail valve body 1 through the air passage 1. An air passage 3 is opened at the center inside the tail valve body 1, and a thermal relief port 4 is opened at the center of the top of the air passage 3. The inside of the air passage 2 is connected to the top of the tail valve body 1 through the air passage 3 and the thermal relief port 4. A fixing groove 5 is opened inside the tail valve body 1, and a pressure relief component 6 is fixedly installed inside the fixing groove 5. A first sealing component 7 is arranged at the outer bottom end of the tail valve body 1. The first sealing component 7 includes a thread 71 arranged on the outer surface of the tail valve body 1 and a sealing ring 72 fixedly sleeved on the outer surface of the tail valve body 1. By setting the first sealing component 7, the tail valve body 1 can be quickly and hermetically installed together with a hydrogen storage bottle with a pressure of 35 MPa;

[0027] The pressure relief component 6 includes a locking nut 61 fixedly installed inside the fixing groove 5 by threads. A first sealing ring 62 is fixedly installed inside the tail valve body 1. The inner wall of the first sealing ring 62 is hermetically attached to the outer surface of the locking nut 61. The locking nut 61 is hermetically connected to the inside of the fixing groove 5 through the first sealing ring 62. A TPRD glass bulb 63 is placed inside the locking nut 61. One end of the TPRD glass bulb 63 away from the locking nut 61 is sleeved with a valve core 64. An installation groove 65 is opened on the outer surface of the valve core 64, and a cushion ring 66 is fixedly sleeved inside the installation groove 65. A spring 67 is movably sleeved on the outer surface of the valve core 64. Under normal conditions, due to the elasticity of the spring 67, both ends of the TPRD glass bulb 63 are respectively abutted against the inner walls of the locking nut 61 and the valve core 64. One end of the valve core 64 away from the locking nut 61 is integrally connected with a valve core tail rod 68. The outer surface of the valve core tail rod 68 is inserted into the inside of the air passage 2. One end of the valve core tail rod 68 away from the valve core 64 is fixedly connected with a gasket 69. The end of the valve core tail rod 68 is fixedly connected with a third sealing ring 610. The gasket 69 is hermetically slidably connected to the inside of the air passage 2 through the third sealing ring 610. By setting the pressure relief component 6, when an accident such as a fire occurs during the driving of a hydrogen energy vehicle, the hydrogen inside the bottle can be quickly released after the TPRD glass bulb 63 is heated and broken, which can better ensure safety in case of an accident. Since the thermal relief port 4 is located at the center of the tail valve body 1, when the tail valve is screwed to any angle when connected to the hydrogen storage pipeline, it does not affect the installation of the hydrogen storage pipeline, which enhances the adaptability.

[0028] Embodiment 2

[0029] Please refer to Figure 1 、 2 and Figure 5, the utility model provides a technical solution: a hydrogen storage bottle tail valve for a hydrogen energy vehicle, including a tail valve body 1. The top of the tail valve body 1 is hexagonal, the outer diameter of the bottom of the tail valve body 1 is smaller than the diagonal length of the top, an air passage 1 2 is opened at the inner bottom end of the tail valve body 1, an air passage 2 3 is opened inside the tail valve body 1, and the inside of the air passage 2 3 is communicated with the bottom of the tail valve body 1 through the air passage 1 2. An air passage 3 4 is opened at the center inside the tail valve body 1, a thermal relief port 5 is opened at the center of the top of the air passage 3 4, and the inside of the air passage 2 3 is communicated with the top of the tail valve body 1 through the air passage 3 4 and the thermal relief port 5. A fixing groove 6 is opened inside the tail valve body 1, a pressure relief component 7 is fixedly installed inside the fixing groove 6, and a second sealing component 9 is arranged at the outer bottom end of the tail valve body 1. The second sealing component 9 includes an external thread 91 opened on the outer surface of the tail valve body 1, and a first retaining ring 92, a second retaining ring 93 and a fourth sealing ring 94 sleeved on the outer surface of the tail valve body 1. By setting the second sealing component 9, the tail valve body 1 can be installed and connected with a hydrogen storage bottle with a pressure of 70 MPa, which can improve its firmness and sealing performance.

[0030] When installing the tail valve body 1, the tail valve body 1 is hermetically connected with the hydrogen storage bottle by means of threaded connection. When in use, when an accident such as a fire occurs during the driving of a hydrogen energy vehicle, high temperature will be generated. After the temperature reaches a certain level, the TPRD glass bulb 73 is heated and broken, so that the valve core 74 loses support, and through the elasticity of the spring 77, it quickly slides in the direction close to the lock nut 71. At the same time, the spring 77 slides through the valve core tail rod 78, the gasket 79 and the third sealing ring 710. At this time, the air passages 1 2, 2 3 and 3 4 are in a connected state inside, and the hydrogen in the bottle can be quickly discharged. By setting the first sealing component 8 and the second sealing component 9, the tail valve body 1 can be used for the sealing connection of hydrogen storage bottles with two pressures of 35 MPa and 70 MPa, which enhances the adaptability and diversity, and can better ensure safety in case of an accident. Since the air passage 3 4 is located at the center of the tail valve body 1, when connecting with the hydrogen storage pipeline, no matter what angle the tail valve is screwed to, it will not affect the installation of the hydrogen storage pipeline, which enhances the adaptability.

[0031] At the same time, the content not described in detail in this specification belongs to the well-known prior art in the art.

Claims

1. A hydrogen storage bottle tail valve for a hydrogen energy vehicle, comprising a bottle tail valve body (1), characterized in that: An air channel 1 (2) is provided at the bottom of the bottle tail valve body (1), an air channel 2 (3) is provided inside the bottle tail valve body (1), an air channel 3 (4) is provided at the center of the bottle tail valve body (1), a thermal pressure relief port (5) is provided at the center of the top of the air channel 3 (4), a fixing groove (6) is provided inside the bottle tail valve body (1), a pressure relief component (7) is fixedly installed inside the fixing groove (6), and a first sealing component (8) or a second sealing component (9) is provided at the bottom of the outer surface of the bottle tail valve body (1); The pressure relief assembly (7) comprises a locking nut (71) threadedly fixedly mounted inside the fixing groove (6); a first sealing ring (72) is fixedly mounted inside the valve body (1) of the bottle tail valve; a TPRD glass bulb (73) is placed inside the locking nut (71); a valve core (74) is sleeved on one end of the TPRD glass bulb (73) away from the locking nut (71); a mounting groove (75) is provided on the outer surface of the valve core (74); a gasket (76) is fixedly sleeved inside the mounting groove (75); a spring (77) is movably sleeved on the outer surface of the valve core (74); a valve core tail rod (78) is integrally connected to one end of the valve core (74) away from the locking nut (71); a gasket (79) is fixedly connected to one end of the valve core tail rod (78) away from the valve core (74); a third sealing ring (710) is fixedly connected to the end of the valve core tail rod (78) 2. The tail valve of a hydrogen storage bottle for a hydrogen energy vehicle according to claim 1 is characterized in that: The outer surface of the valve core tail rod (78) is inserted into the interior of the second air channel (3), and the interior of the second air channel (3) is connected to the top of the bottle tail valve body (1) through the third air channel (4) and the thermal pressure relief port (5).

3. The tail valve of a hydrogen storage bottle for a hydrogen energy vehicle according to claim 1 is characterized in that: The interior of the second air channel (3) is connected to the bottom of the bottle tail valve body (1) through the first air channel (2), and the gasket (79) is sealingly slidably connected to the interior of the second air channel (3) through the third sealing ring (710).

4. The tail valve of a hydrogen storage bottle for a hydrogen energy vehicle according to claim 1 is characterized in that: Under normal conditions, the elasticity of the spring (77) causes the two ends of the TPRD glass bulb (73) to be pressed against the inner wall of the locking nut (71) and the valve core (74) respectively.

5. The tail valve of a hydrogen storage bottle for a hydrogen energy vehicle according to claim 1 is characterized in that: The top of the bottle tail valve body (1) is hexagonal, the bottom outer diameter of the bottle tail valve body (1) is smaller than the top diagonal length, the locking nut (71) is sealed and connected to the inside of the fixing groove (6) through a first sealing ring (72), and the inner wall of the first sealing ring (72) is sealingly fitted to the outer surface of the locking nut (71).

6. The tail valve of a hydrogen storage bottle for a hydrogen energy vehicle according to claim 1 is characterized in that: The first sealing assembly (8) comprises a thread (81) arranged on the outer surface of the bottle tail valve body (1) and a sealing ring (82) fixedly sleeved on the outer surface of the bottle tail valve body (1); The second sealing assembly (9) comprises an external thread (91) formed on the outer surface of the bottle tail valve body (1), and a first retaining ring (92), a second retaining ring (93) and a fourth sealing ring (94) sleeved on the outer surface of the bottle tail valve body (1).