Rotary locking type hydrogenation gun with explosion venting prevention function

Abstract

The invention discloses a rotary locking type hydrogenation gun with an explosion venting prevention function. The rotary locking type hydrogenation gun comprises a hydrogenation gun shell, and the hydrogenation gun shell comprises a protective sleeve, a rotary shaft sleeve and a rear cover which are connected in sequence; an ejector pin capable of axially moving is arranged in the hydrogenation gun shell, and an ejector pin spring is arranged behind the ejector pin in the hydrogenation gun shell; a clamping jaw capable of axially moving is arranged at the front end in the hydrogenation gun shell, a cam connected with the clamping jaw is arranged in the hydrogenation gun shell, the cam is in transmission connection with the rotating shaft sleeve, the rotating shaft sleeve is rotated to drive the cam to rotate, so that the clamping jaw axially moves forwards, and the clamping jaw radially contracts to clamp the hydrogenation port under the action of the inclined surface at the front end of the protective sleeve; the design that the cam and the arc-shaped sliding groove drive the clamping jaw to lock the hydrogenation port and the O-shaped ring-sliding block combined seal is communicated with the back pressure hole is adopted, the movement mode is clear, the mechanical transmission efficiency is high, and the situation that due to sudden increase of the rapid hydrogenation pressure, the O-shaped ring is extruded and damaged, and due to sudden drop of the pressure, the explosion venting reaction occurs is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of high-pressure hydrogenation guns, and in particular to a rotary locking type hydrogenation gun with an explosion-proof function. Background Art

[0002] With the growing global demand for clean energy, hydrogen energy has become one of the most popular new energy sources due to its clean, efficient and sustainable characteristics. The application scenarios of hydrogen energy cover many fields such as transportation, industrial production and household energy supply. As a core component of hydrogen energy infrastructure, the development of hydrogen refueling stations is directly related to the promotion and popularization of hydrogen energy. During the operation of the hydrogen refueling station, the hydrogen refueling gun is an important connecting component for filling hydrogen from the hydrogen refueling machine to the vehicle's hydrogen storage tank. Because hydrogen molecules are small in size and have a high risk of combustion and explosion, the sealing performance and reliability of the hydrogen refueling gun under complex dynamic filling conditions are particularly important.

[0003] As an indispensable basic seal in industrial equipment, rubber O-rings are widely used in various equipment such as hydrogenation and storage due to their good resilience, chemical corrosion resistance and cost-effectiveness. However, under high-pressure hydrogen filling conditions, rubber O-rings need to withstand severe challenges such as material degradation and volume swelling caused by high pressure, temperature changes and hydrogen diffusion in a short period of time under rapid pressure-pressure conditions. Gas penetrates into the rubber sealing material through tiny sealing defects. Especially when the pressure changes rapidly during hydrogenation, the hydrogen accumulated in the sealing ring expands rapidly and is prone to explosion reactions. Cracks, holes or obvious blisters appear inside the rubber O-ring, resulting in sealing failure, which in turn causes equipment damage or even serious safety accidents.

[0004] Therefore, how to effectively prevent the rubber O-ring from exploding during the high-pressure hydrogen filling process and ensure the reliable operation of the hydrogen filling gun has become a key technical problem to be solved in this solution. Summary of the invention

[0005] The purpose of the present invention is to provide a rotary locking hydrogenation gun with an explosion-proof function, which solves the destructive effect of sudden pressure changes during rapid hydrogenation on the sealing ring and ensures the sealing reliability and safety performance of the hydrogenation gun.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A rotary locking hydrogenation gun with an explosion-proof function comprises a hydrogenation gun housing, wherein the hydrogenation gun housing comprises a protective sleeve, a rotating sleeve and a rear cover connected in sequence; an axially movable ejector is arranged inside the hydrogenation gun housing, and an ejector spring is arranged inside the hydrogenation gun housing behind the ejector, a connecting cavity connecting a hydrogenation hose and the hydrogenation gun housing is arranged inside the hydrogenation gun housing, and a tail of the ejector has a plurality of through holes for communicating with the connecting cavity; an axially movable claw is arranged at the front end of the hydrogenation gun housing, a cam connected to the claw is arranged inside the hydrogenation gun housing, the cam is transmission-connected to the rotating sleeve, the rotating sleeve drives the cam to rotate, so that the claw moves axially forward, and is acted on by the inclined surface of the front end of the protective sleeve, so that the claw contracts radially to clamp the hydrogenation port.

[0008] Furthermore, there is a first sealing assembly between the rotating sleeve and the ejector pin, and the first sealing assembly includes a left O-ring, a right O-ring, an axially movable left slider, a right slider and a spring; the left and right O-rings are arranged outside the ejector pin and contact the cam end surface, the rear portion of the rotating sleeve is provided with an annular groove, the rear portions of the left and right sliders are provided with spring grooves, the spring is arranged in the spring groove, one end of the left slider contacts the spring, and the other end contacts the left O-ring, and one end of the right slider contacts the spring, and the other end contacts the right O-ring.

[0009] Furthermore, there is a second sealing assembly between the clamping ring, the rotating sleeve and the rear cover, and the second sealing assembly includes an O-ring, an axially movable slider and a second spring; the O-ring is arranged at the end face gap between the rotating sleeve and the rear cover, and a clamping ring is arranged inside the rear cover, a spring groove is arranged at the front end of the clamping ring, and the second spring is arranged in the spring groove, one end of the slider is in contact with the second spring, and the other end is in contact with the O-ring.

[0010] Furthermore, the rotating sleeve is provided with a plurality of back pressure holes at the right end of the annular groove, which are used to adjust the pressure between the first and second combined seals and the connecting cavity during the hydrogen filling and pressure relief process.

[0011] Furthermore, a slide lock is provided between the rotating sleeve and the rear cover, a main slide lock groove is provided on the outside of the rotating sleeve, and a secondary slide lock groove is provided on the outside of the rear cover; further, the slide lock can be axially moved to lock or unlock.

[0012] Furthermore, the contact end surface of the left slider and the left O-ring is an arc-shaped groove; the contact end surface of the right slider and the right O-ring is an arc-shaped groove; the contact end surface of the slider and the O-ring is an arc-shaped groove.

[0013] Furthermore, the cam surface is provided with a plurality of arc-shaped sliding grooves, one end of the clamping claw is connected to the arc-shaped sliding groove, and the clamping claw is moved axially by rotating the cam.

[0014] Furthermore, a flat key capable of transmitting torque is provided between the rotating sleeve and the cam. Furthermore, an interference fit is provided between the flat key, the cam and the rotating sleeve.

[0015] Furthermore, the ejector pin can be axially moved by compression or reset of an ejector pin spring.

[0016] Furthermore, after the ejector pin moves axially backward, the gas in the communication cavity can enter the ejector pin through the through hole.

[0017] Furthermore, the left O-ring, the ejector pin and the rotating sleeve are in interference fit; the right O-ring, the ejector pin and the rotating sleeve are in interference fit; and the O-ring, the rotating sleeve and the rear cover are in interference fit.

[0018] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0019] 1) The present invention adopts a back-to-back O-ring-slider combination seal. During the high-pressure hydrogen filling process, the sliders on both sides slowly move axially under the action of hydrogen pressure and spring force to squeeze the O-ring to achieve self-tightening sealing. In addition, when the hydrogen fluctuates during filling, dynamic self-balancing is achieved through the compensating rebound effect of the O-rings and springs on both sides, ensuring that the seal remains effective when the pressure-temperature changes instantaneously during the filling cycle, effectively avoiding the extrusion damage of the O-ring caused by the sudden increase in pressure due to rapid hydrogenation and the explosion reaction caused by the sudden drop in pressure.

[0020] 2) The present invention cleverly designs a number of back-pressure holes to connect the gas filling channel and the sealing cavity. Through the throttling damping effect and the tortuous extension of the injection / decompression path formed between the back-pressure hole and the sealing cavity and the connecting cavity, the disturbance effect of the sudden pressure change on the sealing component during the injection / decompression process is significantly weakened, and the probability of rubber O-ring explosion is fundamentally reduced. It also works together with the through hole to effectively disperse and stabilize the flow of high-pressure filling gas in the connecting cavity, solve the problems of excessive local flow velocity of high-pressure gas and frequent vortexes, and optimize the filling performance of the hydrogenation gun.

[0021] 3) The present invention utilizes a cam and an arc-shaped slide groove to drive the claw to lock the hydrogenation port. The structure is relatively simple, the movement mode is clear, and the mechanical transmission efficiency is high. Compared with the current hydrogenation gun structure that uses spring force for locking, the number of complex internal mechanical parts can be reduced, which greatly improves the reliability of the device and reduces the failure rate of misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the entire hydrogenation gun in an embodiment of the present invention;

[0023] Figure 2 This is a schematic structural diagram of a first sealing assembly in an embodiment of the present invention;

[0024] Figure 3is a schematic structural diagram of a second sealing assembly in an embodiment of the present invention;

[0025] Figure 4 Schematic diagram of a mechanical locking mechanism in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of a hydrogenation gun nozzle in an embodiment of the present invention;

[0027] In the figure: 1, hydrogenation gun housing; 2, protective cover; 3, claw; 4, ejector; 5, cam; 6, flat key; 7, rotating sleeve; 8, slide lock; 9, first sealing assembly; 10, connecting chamber; 11, rear cover; 12, ejector spring; 13, second sealing assembly; 14, first sealing chamber; 15, second sealing chamber; 16 clamping ring; 41, through hole; 51, arc-shaped slide groove; 71, annular groove; 72, back pressure hole; 73, main slide lock groove; 91, left O-ring; 92, right O-ring; 93, left slider; 94, right slider; 95, spring; 111, secondary slide lock groove; 131, O-ring; 132, slider; 133, second spring; 161, spring groove; 931, left spring groove; 941, right spring groove. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0029] like Figure 1 As shown, the hydrogenation gun housing 1 is composed of a protective sleeve 2, a rotating sleeve 7 and a rear cover 11; the front end of the hydrogenation gun housing 1 is provided with an axially movable claw 3 and an ejector pin 4; the inside of the hydrogenation gun housing 1 is provided with a cam 5 connected to the claw 3; the cam 5 is sleeved on the outside of the ejector pin 4; a flat key 6 capable of transmitting torque is provided between the rotating sleeve 7 and the cam 5; and a clamping ring 16 is provided inside the rear cover 11;

[0030] The hydrogenation gun housing 1 includes an ejector spring 12 behind the ejector 4; the hydrogenation gun housing 1 includes a connecting cavity 10 for connecting the hydrogenation hose and the hydrogenation gun housing 1;

[0031] like Figure 2 As shown, a first sealing chamber 14 is enclosed between the rotating sleeve 7 and the ejector pin 4; a first sealing assembly 9 is provided in the first sealing chamber 14; an annular groove 71 is provided in the middle of the first sealing chamber 14; the first sealing assembly 9 comprises a left O-ring 91, a right O-ring 92, an axially movable left slider 93, a right slider 94 and a spring 95; the left and right ends of the spring 95 are respectively embedded in the spring grooves of the left slider 93 and the right slider 94; the left O-ring 91 fits in the arc groove of the left slider 93, and the right O-ring 92 fits in the arc groove of the right slider 94;

[0032] A plurality of back pressure holes 72 are provided at the rear of the rotating sleeve 7, and the back pressure holes 72 are respectively connected with the annular groove 71 and the connecting cavity 10, forming a gradient throttling damping effect, extending the hydrogen flow path, and improving the pressure stability between the first sealed cavity 14 and the connecting cavity 10 during the instantaneous pressure-pressure reduction process during hydrogen filling. The back pressure holes 72 also feedback and adjust the hydrogen flow in the hydrogen filling channel, effectively preventing sudden changes in local hydrogen pressure and flow rate, and further improving the safety of the hydrogen filling gun in the working state.

[0033] The first sealing assembly 9 is mainly used to prevent hydrogen leakage between the rotating sleeve 7 and the ejector pin 4. Before the filling begins, the left slider 93 and the right slider 94 are respectively pressed against the left O-ring 91 and the right O-ring 92 under the force of the spring 95, and the left O-ring 91 and the right O-ring 92 are elastically deformed to achieve initial sealing. After the hydrogen filling begins, the hydrogen in a rapidly pressurized state enters the first sealing chamber 14 after step-by-step pressure stabilization through the connecting chamber 10, the back pressure hole 72 and the annular groove 71. The left slider 93 and the right slider 94 are slowly moved axially to both sides under the action of the hydrogen pressure in the middle, slowing down the internal stress growth rate of the left O-ring 91 and the right O-ring 92. The left O-ring 91 and the right O-ring 92 are continuously deformed and pressed against the rotating sleeve 7, the cam 5 and the ejector pin 4, achieving axial and radial sealing of the hydrogen leakage channel. When the filling pressure fluctuates or part of the hydrogen enters the leakage channel, the left O-ring 91 and the right O-ring and the spring 95 work together and compensate each other to achieve dynamic self-balancing and adaptive sealing. In the rapid decompression stage near the end of filling, the hydrogen returns to the connecting cavity 10 through the first sealing cavity 14, the annular groove 71, and the back pressure hole 72, which greatly slows down the pressure drop gradient of the hydrogen in the first sealing cavity 14. The left O-ring 91 and the right O-ring 92 gradually rebound, and the left slider 93 and the right slider 94 slowly move axially toward the middle, effectively avoiding the explosion effect of the rubber O-ring under rapid decompression conditions, resulting in sealing failure.

[0034] like Figure 3 As shown, the clamping ring 16, the rotating sleeve 7 and the rear cover 11 enclose a second sealing cavity 15; a second sealing assembly 13 is arranged in the second sealing cavity 15; the second sealing assembly 13 includes an O-ring 131, an axially movable slider 132 and a second spring 133; the O-ring 131 fits the arc-shaped groove of the slider 132;

[0035] The second sealing assembly 13 is mainly used to prevent hydrogen leakage between the rotating sleeve 7 and the rear cover 11. Before the filling begins, the clamping ring 16 cooperates with the rotating sleeve 7 to pre-tighten the second sealing assembly 13, and the O-ring 131 is elastically deformed under the support of the slider 132 and the second spring 133 to achieve initial sealing. After the hydrogen filling begins, a small amount of hydrogen may enter the second sealing chamber 15 through the tiny annular gap between the rotating sleeve 7 and the clamping ring 16. The slider 132 moves slowly toward the O-ring 131 under the action of hydrogen pressure, slowing down the growth rate of the internal stress of the O-ring 131. The O-ring 131 is constantly deformed and pressed against the rotating sleeve 7 and the rear cover 11, achieving axial and radial sealing of the hydrogen leakage channel. When the filling pressure fluctuates or the pressure is reduced rapidly near the end of filling, a throttling effect is formed between the second sealing chamber 15 and the tiny annular gap between the rotating sleeve 7 and the clamping ring 16, which slows down the gradient of the hydrogen pressure drop inside the second sealing chamber 15, and the O-ring 131 gradually rebounds, and the left slider 132 slowly moves axially to the right, effectively avoiding the explosion effect of the rubber O-ring under rapid decompression conditions, which leads to sealing failure.

[0036] like Figure 1 , 4 As shown, there is a slide lock 8 between the rotating sleeve 7 and the rear cover 11, a main slide lock groove 73 is provided on the outside of the rotating sleeve 7, and an auxiliary slide lock groove 111 is provided on the outside of the rear cover 11; the rotating sleeve 7 is rotated to the filling point, the slide lock 8 is axially moved backward, and the rear end of the slide lock 8 is placed in the auxiliary slide lock groove 111 to lock the rotating sleeve; after the filling is completed, the slide lock 8 is axially moved forward, and the slide lock 8 is placed in the main slide lock groove 73 to unlock the rotating sleeve.

[0037] like Figure 2 As shown, the tail of the ejector pin 4 has a plurality of through holes 41 connected inside and outside. During the filling process, the ejector pin 4 moves to the right, and the through hole 41 is connected with the connecting cavity 10. The hydrogen enters the internal flow channel space of the ejector pin 4 through the through hole 41, and then the hydrogen storage tank is filled with hydrogen through the external hydrogen filling port.

[0038] like Figure 4 , 5 As shown, the transmission mechanism implemented in the present invention is composed of a rotating sleeve 7, a flat key 6, a cam 5 and an arc-shaped slide groove 51. One end of the claw 3 clamps the slide groove 51. When the rotating sleeve 7 rotates, the flat key 6 transmits torque, drives the cam 5 to rotate, and the axis of the claw 3 moves forward. After the claw 3 moves forward axially, it is radially contracted by the protective sleeve 2 to clamp the hydrogenation port, and the front end of the arc-shaped slide groove has a limiting effect on the claw 3 to prevent the claw 3 from falling off.

[0039] The specific working process of the hydrogen filling and sealing assembly implemented in the present invention is as follows: before filling with high-pressure hydrogen, the hydrogen filling gun is aimed at the hydrogen filling port of the external hydrogen storage tank, and the external hydrogen filling port is pushed in from the front end of the ejector pin 4. The ejector pin 4 moves axially to compress the ejector spring, and the through holes 41 at the tail of the ejector pin are connected to the connecting cavity 10. The rotating sleeve 7 drives the cam 5 to rotate, so that the claw 3 moves axially forward along the slide groove 51, and the claw 3 is radially contracted and clamped to the external hydrogen filling port by the inclined surface of the front end of the protective sleeve 2. Then, the slide lock 8 is moved axially backward to lock the rotating sleeve 7. At the same time, the slide lock 8 and the ejector pin 4 return the in-position signal to the hydrogen filling machine, and the hydrogen filling button is turned on the hydrogen filling machine to fill hydrogen into the vehicle-mounted hydrogen storage bottle. When hydrogenation is completed, the pressure in the hydrogenation gun ejector pin 4 and the connecting chamber 10 is balanced, the ejector pin spring 12 is reset, the ejector pin 4 automatically retracts to the initial position, the hydrogenation channel is closed, and a filling completion signal is returned to the hydrogenation gun. The slide lock 8 is moved axially forward to unlock the rotating sleeve 7, and the rotating sleeve 7 is rotated to rotate the cam. The claw 3 moves radially outward to the initial position, and the hydrogenation gun is safely removed to prevent safety hazards caused by misoperation.

[0040] For the first sealing assembly 9, before the filling starts, the left slider 93 and the right slider 94 are respectively pressed against the left O-ring 91 and the right O-ring 92 under the force of the spring 95, and the left O-ring 91 and the right O-ring 92 are elastically deformed to achieve initial sealing. After the hydrogen filling starts, the hydrogen in the rapid pressurized state enters the first sealing chamber 14 through the connecting chamber 10, the back pressure hole 72 and the annular groove 71 after step-by-step pressure stabilization. The left slider 93 and the right slider 94 are slowly moved axially to both sides under the action of the hydrogen pressure in the middle, slowing down the internal stress growth rate of the left O-ring 91 and the right O-ring 92. The left O-ring 91 and the right O-ring 92 are continuously deformed and pressed against the rotating sleeve 7, the cam 5 and the ejector pin 4, realizing axial and radial sealing of the hydrogen leakage channel. When the filling pressure fluctuates or part of the hydrogen enters the leakage channel, the left O-ring 91 and the right O-ring and the spring 95 work together and compensate each other to achieve dynamic self-balancing and adaptive sealing. In the rapid decompression stage near the end of filling, the hydrogen is throttled back to the connecting chamber 10 step by step through the first sealing chamber 14, the annular groove 71, and the back pressure hole 72, which greatly slows down the pressure drop gradient of the hydrogen inside the first sealing chamber 14. The left O-ring 91 and the right O-ring 92 gradually rebound, and the left slider 93 and the right slider 94 slowly move axially toward the middle, effectively avoiding the explosion effect of the rubber O-ring under rapid decompression conditions, resulting in sealing failure.

[0041] For the second sealing assembly 13, before the filling begins, the clamping ring 16 cooperates with the rotating sleeve 7 to pre-tighten the second sealing assembly 13, and the O-ring 131 is elastically deformed under the support of the slider 132 and the second spring 133 to achieve initial sealing. After the hydrogen filling begins, a small amount of hydrogen may enter the second sealing chamber 15 through the tiny annular gap between the rotating sleeve 7 and the clamping ring 16. The slider 132 moves slowly toward the O-ring 131 under the action of the hydrogen pressure, slowing down the growth rate of the internal stress of the O-ring 131. The O-ring 131 is constantly deformed and pressed against the rotating sleeve 7 and the rear cover 11, achieving axial and radial sealing of the hydrogen leakage channel. When the filling pressure fluctuates or the pressure is reduced rapidly near the end of filling, a throttling effect is formed between the second sealing chamber 15 and the tiny annular gap between the rotating sleeve 7 and the clamping ring 16, which slows down the gradient of the hydrogen pressure drop inside the second sealing chamber 15, and the O-ring 131 gradually rebounds, and the left slider 132 slowly moves axially to the right, effectively avoiding the explosion effect of the rubber O-ring under rapid decompression conditions, which leads to sealing failure.

[0042] The above embodiments are only preferred embodiments of the present invention and are not limitations of the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A rotary locking hydrogenation gun with explosion-proof function, comprising a hydrogenation gun housing (1), characterized in that: The hydrogenation gun housing (1) comprises a protective sleeve (2), a rotating sleeve (7) and a rear cover (11) which are connected in sequence; an axially movable ejector pin (4) is arranged inside the hydrogenation gun housing (1), and an ejector pin spring (12) is arranged inside the hydrogenation gun housing (1) behind the ejector pin (4); a connecting cavity (10) is arranged inside the hydrogenation gun housing (1) for connecting the hydrogenation hose and the hydrogenation gun housing (1); a plurality of through holes (41) are arranged at the tail of the ejector pin (4) for communicating with the connecting cavity (10); an axially movable claw (3) is arranged at the front end of the hydrogenation gun housing 1, a cam (5) connected to the claw (3) is arranged inside the hydrogenation gun housing (1), the cam (5) and the rotating sleeve (7) are transmission-connected, the rotating sleeve (7) drives the cam (5) to rotate, so that the claw (3) moves axially forward, and under the action of the inclined surface at the front end of the protective sleeve, the claw (3) contracts radially to clamp the hydrogenation port.

2. A rotary locking hydrogenation gun with explosion-proof function according to claim 1, characterized in that: A first sealing assembly (9) is provided between the rotating sleeve (7) and the ejector pin (4). The first sealing assembly (9) comprises a left O-ring (91), a right O-ring (92), an axially movable left slider (93), a right slider (94) and a spring (95); the left O-ring (91) and the right O-ring (92) are arranged outside the ejector pin (4) and in contact with the end surface of the cam (5); an annular groove (71) is provided at the rear of the rotating sleeve (7); a left spring groove (931) is provided at the back of the left slider (93); a right spring groove (941) is provided at the back of the right slider (94); the spring (95) is arranged in the left spring groove (931) and the right spring groove (941); one end of the left slider (93) is in contact with the spring (95) and the other end is in contact with the left O-ring (91); one end of the right slider (94) is in contact with the spring (95) and the other end is in contact with the right O-ring (92).

3. The rotary locking hydrogenation gun with explosion-proof function according to claim 2, characterized in that: A second sealing assembly (13) is provided between the connecting cavity (10), the rotating sleeve (7) and the rear cover (11), and the second sealing assembly (13) comprises an O-ring (131), an axially movable slider (132) and a second spring (133); the O-ring (131) is arranged at the end surface gap between the rotating sleeve (7) and the rear cover (11), a clamping ring (16) is provided inside the rear cover (11), a spring groove (161) is provided at the front end of the clamping ring (16), the second spring (133) is arranged in the spring groove (161), one end of the slider (132) contacts the second spring (133), and the other end contacts the O-ring (131).

4. The rotary locking hydrogenation gun with explosion-proof function according to claim 2, characterized in that: The rotating sleeve (7) is provided with a plurality of back pressure holes (72) at the right end of the annular groove (71).

5. The rotary locking hydrogenation gun with explosion-proof function according to claim 1, characterized in that: A slide lock (8) is provided between the rotating sleeve (7) and the rear cover (11), a main slide lock groove (73) is provided on the outside of the rotating sleeve (7), and a secondary slide lock groove (111) is provided on the outside of the rear cover (11).

6. The rotary locking hydrogenation gun with explosion-proof function according to claim 3, characterized in that: The contact end surface of the left slider (93) and the left O-ring (91) is an arc-shaped groove; the contact end surface of the right slider (94) and the right O-ring (92) is an arc-shaped groove; and the contact end surface of the slider (132) and the O-ring (131) is an arc-shaped groove.

7. The rotary locking hydrogenation gun with explosion-proof function according to claim 1, characterized in that: The surface of the cam (5) is provided with a plurality of arc-shaped sliding grooves (51), one end of the clamping claw (3) is connected to the arc-shaped sliding groove (51), and the clamping claw (3) is moved axially by rotating the cam (5).

8. The rotary locking hydrogenation gun with explosion-proof function according to claim 1, characterized in that: A flat key (6) capable of transmitting torque is arranged between the rotating sleeve (7) and the cam (5).

9. The rotary locking hydrogenation gun with explosion-proof function according to claim 3, characterized in that: The left O-ring (91) is in interference fit with the ejector pin and the rotating sleeve; the right O-ring (92) is in interference fit with the ejector pin and the rotating sleeve; and the O-ring (131) is in interference fit with the rotating sleeve and the rear cover.

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