A new hydrogen break valve

Abstract

The utility model belongs to valve technical field especially a new -type hydrogen gas pull -off valve, including the flow divider, valve body and the shaft sleeve, the flow divider one end is equipped with the first connecting groove, the other end is equipped with the first installation groove and the flow channel hole, the valve body one end is equipped with the first valve cavity, the other end is equipped with the mounting hole, the shaft sleeve one end is equipped with the second installation groove, the middle part is equipped with the second valve cavity, the other end is equipped with the second connecting groove, is equipped with the valve core in the shaft sleeve, and the valve core penetrates the second installation groove, second valve cavity and second connecting groove, the valve core side wall is equipped with the valve block, is equipped with the sealing gasket, spring seat, second spring and tail wing on the valve core, the mounting hole side wall is embedded with the positioning assembly, and the shaft sleeve outer side wall is equipped with the arc groove. The shaft sleeve is separated from the valve body, the valve core in the shaft sleeve is under the action of second spring, and the valve block and sealing gasket move to the through -hole direction, so that the shaft sleeve is in the closed state, prevents the leakage, after the shaft sleeve and valve core insert into the valve body, position the shaft sleeve through the positioning assembly, and the pull -off valve can use, reduce the resource waste, save the cost input of enterprise.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a novel hydrogen break-off valve. Background Technology

[0002] A hydrogen disconnect valve (also known as a disconnector, emergency disconnect device, or emergency disconnector) is a passive safety device specifically designed for hydrogen energy applications (especially hydrogen refueling stations, on-board hydrogen supply systems, and hydrogen delivery pipelines). Its core function is to automatically, quickly, and safely cut off the hydrogen supply and simultaneously seal both sides of the pipeline when the hydrogen refueling nozzle or hose is accidentally subjected to excessive tension (e.g., the vehicle is started and driven away without disconnecting the nozzle). This prevents a large hydrogen leak from causing serious accidents such as fires or explosions, while also protecting expensive hydrogen refueling equipment and vehicle interfaces from damage.

[0003] Traditional hydrogen breakaway valves use self-breaking bolts or the valve itself having a breakable structure. When subjected to axial tensile force exceeding a preset threshold, the self-breaking bolt breaks or the valve itself breaks to trigger the leak prevention protection mechanism. However, the hydrogen breakaway valve will be damaged and cannot be used anymore, requiring replacement. This results in a significant waste of resources and increases the company's cost.

[0004] To address the above problems, this utility model document proposes a novel hydrogen break-off valve. Utility Model Content

[0005] This invention provides a novel hydrogen breakaway valve that can be reused, reducing resource waste and enterprise cost input.

[0006] This utility model provides the following technical solution:

[0007] A novel hydrogen breakaway valve includes a diversion valve, a valve body, and a bushing. The diversion valve has a first connecting groove on one end face and a first mounting groove and a flow channel hole communicating with the first connecting groove on the other end face. The valve body has a first valve cavity at one end and a mounting hole communicating with the valve cavity at the other end. The bushing has a second mounting groove at one end and a second valve cavity communicating with the second mounting groove in the middle. The bushing has a second connecting groove communicating with the second valve cavity at the other end. A valve core is provided inside the bushing and passes through the second mounting groove, the second valve cavity, and the second connecting groove.

[0008] An inner sleeve is fitted at the opening of the first mounting groove. A first spring is provided between the inner sleeve and the bottom surface of the first mounting groove. A pressure sleeve is fitted inside the inner sleeve. One end of the bushing with the second valve cavity passes through the mounting hole and is fitted inside the inner sleeve. One end of the pressure sleeve is fitted inside the second mounting groove. The other end of the pressure sleeve abuts against the first spring. The diameter of the second mounting groove is larger than the diameter of the second valve cavity. The connection between the second mounting groove and the second valve cavity is an inclined surface. The valve core is provided with a valve block that matches the inclined surface on the side wall of the second mounting groove. A sealing gasket, a spring seat, a second spring, and a tail wing are also fitted on the valve core. A retaining ring is fitted inside the second connecting groove. The tail wing abuts against the retaining ring. The second spring is located between the tail wing and the spring seat. The sealing gasket is located between the valve block and the spring seat.

[0009] The bushing has a through hole on the side wall corresponding to the second valve chamber;

[0010] The mounting hole sidewall is fitted with a positioning component, and the outer sidewall of the bushing is provided with an arc-shaped groove that matches the positioning component.

[0011] Furthermore, the positioning component includes a positioning steel ball and a third spring. The mounting hole has a locking hole on its side wall. A fixing ring is provided on the outer side wall of the valve body at the position corresponding to the locking hole. The positioning steel ball and the third spring are locked in the locking hole, with one end of the third spring abutting against the fixing ring and the other end abutting against the positioning steel ball. A protective plate is provided at the end of the locking hole located on the inner wall of the valve body to prevent the positioning steel ball from falling off.

[0012] Furthermore, the diverter valve has an external thread on the side wall of the end with the first mounting groove, and an internal thread on the inner wall of the first valve cavity near the opening. The diverter valve is threaded to the valve body, and a first O-ring is provided at the connection. A second O-ring is embedded in the contact surface between the inner wall of the inner bushing and the bushing. A third O-ring is embedded in the contact surface between the inner wall of the first mounting groove and the inner bushing.

[0013] Furthermore, the valve body has a threaded hole near the outer edge of the end face with the mounting hole, and a limit screw is provided in the threaded hole, which presses against the fixing ring.

[0014] Furthermore, an exhaust hole is provided on the side wall of the first mounting groove on the diversion valve at the position corresponding to the first spring.

[0015] Furthermore, the tail fin includes an annular body, and a plurality of support blocks are evenly provided on the outer side wall of the annular body.

[0016] In this invention, the breakaway valve is connected to an external pipeline via a first connecting groove and a second connecting groove. The bushing is secured inside the valve body by a positioning component in conjunction with an arc-shaped groove. When the axial tensile force on the breakaway valve exceeds the clamping force of the positioning component on the bushing, the bushing separates from the valve body. Under the action of a second spring, the valve core inside the bushing causes the valve block and the sealing gasket to move towards the through hole, sealing the connection between the second mounting groove and the second valve cavity, thereby keeping the bushing in a closed state to prevent leakage. After the bushing and valve core are inserted into the valve body, the bushing is positioned by the positioning component, and the breakaway valve is ready for use, reducing resource waste and saving costs for enterprises. Attached Figure Description

[0017] Figure 1 A cross-sectional structural schematic diagram of the usage state of a novel hydrogen break-off valve provided in an embodiment of this utility model;

[0018] Figure 2 is a cross-sectional structural diagram of the disconnected state of a novel hydrogen break valve provided in an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the main structure of the tail fin in a novel hydrogen breakaway valve provided in an embodiment of the present invention;

[0020] Figure 4 This is a side view of the diversion valve in a novel hydrogen breakaway valve provided in an embodiment of the present utility model.

[0021] Figure 5 This utility model provides a side view of the valve body of a novel hydrogen breakaway valve.

[0022] Figure label:

[0023] 1. Diverter valve; 101. First connecting groove; 102. First mounting groove; 103. Flow channel hole; 104. Exhaust hole; 2. Valve body; 201. First valve chamber; 202. Mounting hole; 203. Snap hole; 204. Threaded hole; 3. Bushing; 301. Second mounting groove; 302. Second valve chamber; 303. Second connecting groove; 4. Inner bushing; 5. Pressure sleeve; 6. Valve core; 7. Valve block; 8. Sealing gasket; 9. Spring seat; 10. Tail wing; 1001. Annular body; 1002. Support block; 11. Snap ring; 12. Positioning steel ball; 13. Third spring; 14. Fixing ring; 15. Limiting screw; 16. First O-ring; 17. Second O-ring; 18. Third O-ring; 19. First spring; 20. Second spring. Detailed Implementation

[0024] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0025] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0026] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0027] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0028] References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of the present invention include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0029] Example:

[0030] Reference Figure 1 Figure 2 Figure 3 , Figure 4 and Figure 5As shown, a novel hydrogen breakaway valve includes a diversion valve 1, a valve body 2, and a bushing 3. One end face of the diversion valve 1 is provided with a first connecting groove 101, and the other end face is provided with a first mounting groove 102 and a flow channel hole 103 communicating with the first connecting groove 101. One end of the valve body 2 is provided with a first valve cavity 201, and the other end is provided with a mounting hole 202 communicating with the valve cavity. One end of the bushing 3 is provided with a second mounting groove 301, and the middle part is provided with a second valve cavity 302 communicating with the second mounting groove 301. The other end is provided with a second connecting groove 303 communicating with the second valve cavity 302. A valve core 6 is provided inside the bushing 3, and the valve core 6 passes through the second mounting groove 301, the second valve cavity 302, and the second connecting groove 303.

[0031] An inner sleeve 4 is fitted into the opening of the first mounting groove 102. A first spring 19 is provided between the inner sleeve 4 and the bottom surface of the first mounting groove 102. A pressure sleeve 5 is fitted inside the inner sleeve 4. One end of the bushing 3, which has a second valve cavity 302, passes through the mounting hole 202 and is fitted into the inner sleeve 4. One end of the pressure sleeve 5 is fitted into the second mounting groove 301, and the other end of the pressure sleeve 5 abuts against the first spring 19. The diameter of the second mounting groove 301 is larger than the diameter of the second valve cavity 302. Furthermore, the connection between the second mounting groove 301 and the second valve cavity 302 is an inclined surface. The valve core 6 is located on the side wall of the second mounting groove 301 and is provided with a valve block 7 that matches the inclined surface. The valve core 6 is also fitted with a sealing gasket 8, a spring seat 9, a second spring 20, and a tail wing 10. A retaining ring 11 is inserted into the inner wall of the second connecting groove 303. The tail wing 10 abuts against the retaining ring 11. The second spring 20 is located between the tail wing 10 and the spring seat 9. The sealing gasket 8 is located between the valve block 7 and the spring seat 9.

[0032] The bushing 3 has a through hole on the side wall corresponding to the second valve chamber 302;

[0033] The mounting hole 202 has a positioning component embedded in its side wall, and the outer side wall of the bushing 3 has an arc-shaped groove that matches the positioning component.

[0034] The first connecting groove 101 connects one end of the diversion valve 1 of the breakaway valve to the pipeline on the external tank truck or hydrogen cylinder to be refueled, and the second connecting groove 303 connects it to the output pipeline of the external hydrogen refueling machine.

[0035] The valve core 6 abuts against the bottom surface of the first mounting groove 102, causing the valve block 7 to separate from the inner wall of the bushing 3. Hydrogen enters the second valve chamber 302 from the second connecting groove 303, enters the first valve chamber 201 through the through hole on the side wall of the second valve chamber 302, and enters the first connecting groove 101 through the flow channel hole 103 at the end of the diverter valve 1. The pull-off valve is in the normally open state.

[0036] When the hydrogen pipeline is subjected to excessive tension, the positioning component detaches from the arc-shaped groove, pulling the bushing 3 out of the valve body 2. The valve core 6, along with the valve sleeve, detaches from the inner bushing 4. The end of the valve core 6 separates from the bottom surface of the first mounting groove 102. At this time, the valve block 7 on the valve core 6 moves towards the second mounting groove 301 under the action of the second spring 20, so that the side wall of the valve block 7 engages with the inclined surface at the connection between the second mounting groove 301 and the second valve cavity 302. Simultaneously, the sealing gasket 8 makes the second mounting groove 301 inside the bushing 3... The connection between the first valve chamber 302 and the second valve chamber 302 is sealed, thereby blocking the passage of hydrogen and preventing hydrogen leakage at the hydrogen dispenser. At the same time, the elastic force of the first spring 19 acts on the inner liner 4, causing the inner liner 4 to abut against the side wall of the first valve chamber 201, sealing the first valve chamber 201 and preventing leakage of hydrogen already filled in the tank truck or hydrogen cylinder connected to the first connecting groove 101. When the hydrogen delivery mechanism is turned off, the hydrogen delivery pipeline needs to be reconnected. At this time, the bushing 3 is reinserted into the valve body 2, and the valve core 6 passes through the inner liner. After sleeve 4 and pressure sleeve 5 abut against the bottom surface of the first mounting groove 102, the valve core 6 moves towards the second connecting groove 303, causing the valve block 7 and sealing gasket to separate from the inner wall of the bushing 3. This allows the second connecting groove 303 inside the bushing 3 to communicate with the second valve cavity 302. At the same time, the positioning component on the side wall of the valve body 2 is re-engaged in the arc-shaped groove on the outer side wall of the bushing 3, so that the bushing 3 is locked inside the valve body 2. The valve can then be pulled off and used again. Simultaneously, the movement of the valve core 6 towards the second mounting groove 301 engages the second spring 20. The compression ensures the proper sealing effect within the bushing 3 of the breakaway valve. The bushing 3 is connected to the pressure sleeve 5. When the bushing 3 is inserted into the valve body 2, it compresses the pressure sleeve 5 and the inner bushing 4, causing the inner bushing 4 to separate from the inner wall of the valve body 2. Simultaneously, because the pressure sleeve 5 abuts against the first spring 19, it compresses the first spring 19, causing the elastic force of the first spring 19 to act on the inner bushing 4 and the pressure sleeve 5, ensuring the proper sealing effect within the valve body 2 of the breakaway valve. The breakaway valve can then be used normally without replacement.

[0037] The positioning assembly includes a positioning steel ball 12 and a third spring 13. A locking hole 203 is opened on the side wall of the mounting hole 202. A fixing ring 14 is provided on the outer side wall of the valve body 2 at the position corresponding to the locking hole 203. The positioning steel ball 12 and the third spring 13 are locked in the locking hole 203, with one end of the third spring 13 abutting against the fixing ring 14 and the other end abutting against the positioning steel ball 12. A protective plate is provided at the end of the locking hole 203 located on the inner wall of the valve body 2 to prevent the positioning steel ball 12 from falling off.

[0038] The spring force of the third spring 13 causes the positioning steel ball 12 to be locked in the arc-shaped groove on the outer wall of the bushing 3, preventing the bushing 3 from falling out of the valve body 2. When the axial tension is greater than the limiting force of the positioning steel ball 12 on the arc-shaped groove, the positioning steel ball 12 compresses the third spring 13 and retracts into the locking hole 203, allowing the bushing 3 to be pulled out of the valve body 2. When the external axial tension disappears, the worker inserts the bushing 3 into the valve body 2, and the positioning steel ball 12 is locked in the arc-shaped groove, thus repositioning the bushing 3 and connecting it to the valve body 2.

[0039] The locking hole 203 is provided on the side wall of the mounting hole 202, so that the third spring 13 abuts against the fixing ring 14, which facilitates the drilling of the locking hole 203.

[0040] The diverter valve 1 has an external thread on one side wall of the first mounting groove 102, and an internal thread on the inner wall of the first valve chamber 201 near the opening. The diverter valve 1 is threaded to the valve body 2, and a first O-ring 16 is provided at the connection. A second O-ring 17 is embedded in the contact surface between the inner wall of the inner bushing 4 and the bushing 3. A third O-ring 18 is embedded in the contact surface between the inner wall of the first mounting groove 102 and the inner bushing 4.

[0041] The flow divider valve 1 is threadedly connected to the valve body 2, which facilitates the connection between the flow divider valve 1 and the valve body 2, and also improves the stability of the connection structure between the flow divider valve 1 and the valve body 2.

[0042] The first O-ring 16 improves the sealing at the connection between the diverter valve 1 and the valve body 2, the second O-ring 17 improves the sealing at the contact surface between the diverter valve 1 and the inner bushing 4, and the third O-ring 18 improves the sealing at the contact surface between the inner bushing 4 and the bushing 3. The first O-ring 16, the second O-ring 17, and the third O-ring 18 ensure that hydrogen will not leak when it is transported in the breakaway valve, thereby improving the safety of the breakaway valve.

[0043] The valve body 2 has a threaded hole 204 near the outer edge of the end face with the mounting hole 202. A limit screw 15 is provided in the threaded hole 204, and the limit screw 15 presses the fixing ring 14.

[0044] The retaining ring 14 is sleeved on the outer side of the end of the valve body 2. The retaining ring 14 is pressed and positioned by the limiting screw 15 to prevent the retaining ring 14 from falling off the valve body 2. If the retaining ring 14 falls off, the third spring 13 will fall off from the locking hole 203. If the third spring 13 falls off, the positioning steel ball 12 will fall off from the arc groove on the outer side wall of the bushing 3. This will make the bushing 3 easily fall off from the valve body 2, causing the break-off valve to disconnect and affecting the normal delivery of hydrogen.

[0045] An exhaust hole 104 is provided on the side wall of the first mounting groove 102 on the diversion valve 1, corresponding to the position of the first spring 19.

[0046] The vent 104 facilitates the installation of the pressure sleeve 5 and inner bushing 4 inside the first mounting groove 102 of the diversion valve 1. Due to the strong internal sealing of the breakaway valve, when the inner bushing 4 and pressure sleeve 5 are installed into the first mounting groove 102, the air inside the first mounting groove 102 is compressed, and the air pressure increases, making it difficult to install the inner bushing 4 and pressure sleeve 5 in place. The vent 104 allows the first mounting groove 102 to communicate with the outside air, thereby making the air pressure inside the first mounting groove 102 the same as the outside air pressure, thus reducing the installation difficulty of the inner bushing 4 and pressure sleeve 5.

[0047] The tail fin 10 includes an annular body 1001, and a plurality of support blocks 1002 are evenly arranged on the outer side wall of the annular body 1001. The annular body 1001 is sleeved on the valve core 6, and the support blocks 1002 abut against the inner wall of the bushing 3, so that the tail fin 10 abuts against the snap ring 11 and can also support the second spring 20. The support blocks 1002 are used to transport hydrogen.

[0048] During hydrogen delivery, a disconnect valve is connected to the hydrogen delivery pipeline. One end of the diversion valve 1 is connected to the side of the tanker or hydrogen cylinder to be refueled, and the valve body 2 is connected to the side of the hydrogen dispenser. The disconnect valve is normally open. If the hydrogen delivery pipeline receives axial tension, when the axial tension exceeds the disconnect valve's separation threshold, the bushing 3 moves away from the valve body 2. Simultaneously, the arc-shaped groove squeezes the positioning steel ball 12, causing it to disengage from the arc-shaped groove and retract into the locking hole 203. The end of the bushing 3 separates from the pressure sleeve 5, thereby pulling the bushing 3 out of the valve body 2. Under the elastic force of the second spring 20, the valve core 6 moves towards the diversion valve 1. The valve block 7 and the sealing gasket 8 abut against the inner wall of the bushing 3, sealing the gap between the bushing 3 and the valve block 7, thereby sealing the inside of the bushing 3. When the hydrogen dispenser disconnects the valve, the hydrogen delivered by the hydrogen dispenser leaks from the bushing 3. At the same time, the elastic force of the first spring 19 acts on the inner liner 4, causing the inner liner 4 to abut against the side wall of the first valve chamber 201, sealing the first valve chamber 201 and preventing the leakage of hydrogen already filled in the tank truck or hydrogen cylinder connected to the first connecting groove 101. After the axial tension of the delivery pipeline is discharged, the breakaway valve needs to be reconnected. If the positioning steel ball 12 in the retaining hole 203 falls out, open the limit screw 15, then remove the retaining ring 14 from the valve body 2, and then remove the third spring 13 from the retaining hole 203. After placing the steel ball in the retaining hole 203, insert the third spring 13, then put the retaining ring 14 on the outside of the valve body 2. Finally, install the limit screw 15 on the end face of the valve body 2 and tighten the retaining ring 14. Then insert the bushing 3 and the valve core 6 into the valve body 2, so that the positioning steel ball 12 is locked in the arc groove on the side of the shaft. The bushing 3 is connected to the pressure sleeve 5, and the valve core 6 end... The valve core 6 abuts against the bottom surface of the first mounting groove 102, causing it to move towards the second connecting groove 303, which in turn moves the valve block 7 and the sealing gasket 8, thereby connecting the inside of the bushing 3 and connecting the delivery pipeline. At the same time, the second spring 20 is compressed, so that the second spring 20 maintains its elastic force on the pressure block. Meanwhile, the pressure sleeve 5 abuts against the first spring 19, thereby compressing the first spring 19. The elastic force of the first spring 19 acts on the inner bushing 4 and the pressure sleeve 5, so that the breakaway valve can be used normally. The breakaway valve can be reused without replacement, which improves the service life of the breakaway valve and reduces the cost of enterprise.

[0049] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A novel hydrogen breakaway valve, characterized in that, The device includes a flow divider valve, a valve body, and a bushing. The flow divider valve has a first connecting groove on one end face and a first mounting groove and a flow channel hole communicating with the first connecting groove on the other end face. The valve body has a first valve cavity at one end and a mounting hole communicating with the valve cavity at the other end. The bushing has a second mounting groove at one end and a second valve cavity communicating with the second mounting groove in the middle. The bushing has a second connecting groove communicating with the second valve cavity at the other end. A valve core is provided inside the bushing and passes through the second mounting groove, the second valve cavity, and the second connecting groove. An inner sleeve is fitted at the opening of the first mounting groove. A first spring is provided between the inner sleeve and the bottom surface of the first mounting groove. A pressure sleeve is fitted inside the inner sleeve. One end of the bushing with the second valve cavity passes through the mounting hole and is fitted inside the inner sleeve. One end of the pressure sleeve is fitted inside the second mounting groove. The other end of the pressure sleeve abuts against the first spring. The diameter of the second mounting groove is larger than the diameter of the second valve cavity. The connection between the second mounting groove and the second valve cavity is an inclined surface. The valve core is provided with a valve block that matches the inclined surface on the side wall of the second mounting groove. A sealing gasket, a spring seat, a second spring, and a tail wing are also fitted on the valve core. A retaining ring is fitted inside the second connecting groove. The tail wing abuts against the retaining ring. The second spring is located between the tail wing and the spring seat. The sealing gasket is located between the valve block and the spring seat. The bushing has a through hole on the side wall corresponding to the second valve chamber; The mounting hole sidewall is fitted with a positioning component, and the outer sidewall of the bushing is provided with an arc-shaped groove that matches the positioning component.

2. The novel hydrogen breakaway valve according to claim 1, characterized in that, The positioning component includes a positioning steel ball and a third spring. The mounting hole has a locking hole on its side wall. A fixing ring is provided on the outer side wall of the valve body at the position corresponding to the locking hole. The positioning steel ball and the third spring are locked in the locking hole, with one end of the third spring abutting against the fixing ring and the other end abutting against the positioning steel ball. A protective plate is provided at the end of the locking hole located on the inner wall of the valve body to prevent the positioning steel ball from falling off.

3. The novel hydrogen breakaway valve according to claim 1, characterized in that, The diverter valve has an external thread on one side wall with the first mounting groove, and an internal thread on the inner wall of the first valve cavity near the opening. The diverter valve is threaded to the valve body, and a first O-ring is provided at the connection. A second O-ring is embedded in the contact surface between the inner wall of the inner bushing and the bushing. A third O-ring is embedded in the contact surface between the inner wall of the first mounting groove and the inner bushing.

4. A novel hydrogen breakaway valve according to claim 2, characterized in that, The valve body has a threaded hole near the outer edge of the end face with the mounting hole, and a limit screw is provided in the threaded hole, which presses against the fixing ring.

5. A novel hydrogen breakaway valve according to claim 1, characterized in that, The first mounting groove sidewall of the diversion valve has an exhaust hole at the position corresponding to the first spring.

6. A novel hydrogen breakaway valve according to claim 1, characterized in that, The tail fin includes a ring-shaped body, and multiple support blocks are evenly distributed on the outer wall of the ring-shaped body.

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