Rotary locking type hydrogenation gun with anti-explosion function

Abstract

The application discloses a rotating locking type hydrogenation gun with an anti-explosion function, which comprises a hydrogenation gun shell, the hydrogenation gun shell comprises a protective sleeve, a rotating shaft sleeve and a rear cover which are sequentially connected, an axially movable thimble is arranged in the hydrogenation gun shell, a thimble spring is arranged behind the thimble in the hydrogenation gun shell, an axially movable claw is arranged at the front end of the hydrogenation gun shell, a cam connected with the claw is arranged in the hydrogenation gun shell, the cam is in transmission connection with the rotating shaft sleeve, the rotating shaft sleeve drives the cam to rotate, the claw is axially moved forward, is affected by the slope at the front end of the protective sleeve, and is radially contracted to tightly clamp a hydrogenation port; the cam and the arc-shaped sliding groove are used for driving the claw to lock the hydrogenation port, the O-shaped ring and the slider combination sealing and the back pressure hole are in communication, the movement mode is clear, the mechanical transmission efficiency is high, the O-shaped ring is effectively prevented from being extruded and damaged due to the rapid hydrogenation pressure sudden increase and the explosion reaction is effectively prevented from occurring due to the pressure sudden decrease.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of high-pressure hydrogenation guns, in particular to a rotary locking type hydrogenation gun with a blowout prevention function. BACKGROUND

[0002] With the increasing demand for clean energy around the world, hydrogen energy has become one of the new energy sources that are concerned due to its clean, efficient and sustainable characteristics. The application scenarios of hydrogen energy cover multiple fields such as transportation, industrial production and household energy supply, and the development of hydrogen refueling stations as the core component of hydrogen energy infrastructure is directly related to the promotion and popularization of hydrogen energy. In the operation process of the hydrogen refueling station, the hydrogenation gun is an important connecting component for filling hydrogen from the hydrogen refueling machine to the vehicle hydrogen storage tank. Because the hydrogen molecule is small and has high risk of explosion, the sealing performance and reliability of the hydrogenation gun under complex dynamic filling conditions are particularly important.

[0003] As an indispensable basic sealing element in industrial equipment, the rubber O-shaped sealing ring is widely used in various equipment such as hydrogenation and hydrogen storage due to its good resilience, chemical corrosion resistance and cost-effectiveness. However, under the working condition of high-pressure hydrogen filling, the rubber O-shaped sealing ring needs to withstand high pressure, variable temperature and material degradation and volume swelling caused by hydrogen diffusion under rapid pressure increase-decrease environment in a short time. Gas penetrates into the internal rubber sealing material through small sealing defects, especially when the pressure changes rapidly during hydrogenation, the hydrogen accumulated in the sealing ring expands rapidly and is prone to blowout reaction, cracks, cavities or obvious scab appear in the rubber O-shaped ring, which leads to sealing failure and causes equipment damage and even serious safety accidents.

[0004] Therefore, how to effectively prevent the blowout reaction of the rubber O-shaped ring during high-pressure hydrogen filling and ensure the reliable operation of the hydrogenation gun has become a technical problem to be solved by the present application. SUMMARY

[0005] The purpose of the present application is to provide a rotary locking type hydrogenation gun with a blowout prevention function, which solves the damage of pressure sudden change to the sealing ring during rapid hydrogenation and ensures the sealing reliability and safety performance of the hydrogenation gun.

[0006] To solve the above technical problems, the technical scheme adopted by the present application is:

[0007] A rotating locking type hydrogenation gun with anti-explosion function, comprising a hydrogenation gun shell, the hydrogenation gun shell comprises a protective sleeve, a rotating shaft sleeve and a rear cover connected in sequence; the hydrogenation gun shell is internally provided with an axially movable ejector pin, and the hydrogenation gun shell is internally provided with an ejector pin spring located behind the ejector pin; the hydrogenation gun shell is internally provided with a communication cavity connecting the hydrogenation hose and the hydrogenation gun shell; the tail of the ejector pin is provided with a plurality of through holes for communication with the communication cavity; the hydrogenation gun shell is internally provided with an axially movable claw at the front end; the hydrogenation gun shell is internally provided with a cam connected with the claw; the cam is in transmission connection with the rotating shaft sleeve; rotating the rotating shaft sleeve drives the cam to rotate, so that the claw moves axially forward and is radially contracted to clamp the hydrogenation port under the action of the front inclined surface of the protective sleeve.

[0008] Further, the rotating shaft sleeve and the ejector pin have a first sealing assembly, the first sealing assembly comprises a left O-shaped ring, a right O-shaped ring, axially movable left and right sliders and a spring; the left and right O-shaped rings are arranged outside the ejector pin and in contact with the end face of the cam; the tail of the rotating shaft sleeve is provided with an annular groove; the tails of the left and right sliders are provided with spring grooves; the spring is arranged in the spring grooves; one end of the left slider is in contact with the spring, and the other end is in contact with the left O-shaped ring; one end of the right slider is in contact with the spring, and the other end is in contact with the right O-shaped ring.

[0009] Further, the pressing ring, the rotating shaft sleeve and the rear cover have a second sealing assembly, the second sealing assembly comprises an O-shaped ring, an axially movable slider and a second spring; the O-shaped ring is arranged at the gap between the end faces of the rotating shaft sleeve and the rear cover; the rear cover is internally provided with a pressing ring, and the front end of the pressing ring is provided with a spring groove; 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-shaped ring.

[0010] Further, a plurality of back pressure holes are formed in the right end of the annular groove of the rotating shaft sleeve, for adjusting the pressure between the first and second combined seals and the communication cavity during hydrogen filling and pressure relief.

[0011] Further, the rotating shaft sleeve and the rear cover have a sliding lock, the outer part of the rotating shaft sleeve is provided with a main sliding lock groove, and the outer part of the rear cover is provided with a secondary sliding lock groove; further, the sliding lock can be axially moved to be locked or unlocked.

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

[0013] Further, the surface of the cam is provided with a plurality of arc-shaped sliding grooves, one end of the claw is connected with the arc-shaped sliding grooves, and rotating the cam makes the claw move axially.

[0014] Further, the rotating shaft sleeve and the cam are in transmission torque splines, and the splines, the cam and the rotating shaft sleeve are in interference fit.

[0015] Further, the ejector pin can move axially by compression or reset of the ejector pin spring.

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

[0017] Further, the left O-ring is in interference fit with the ejector pin and the rotating shaft sleeve; the right O-ring is in interference fit with the ejector pin and the rotating shaft sleeve; and the O-ring is in interference fit with the rotating shaft sleeve and the rear cover.

[0018] Compared with the prior art, the application has the following beneficial effects:

[0019] 1) The application adopts back-to-back O-ring-slider combination sealing, and the two sides of the slider are axially moved slowly to extrude the O-ring to realize self-tight sealing under the action of hydrogen pressure and spring force during high-pressure hydrogen filling. Moreover, dynamic self-balancing is realized through the compensation and rebounding action of the two sides of the O-ring and the spring when the hydrogen filling fluctuates, so that the sealing is continuously effective when the pressure and temperature change instantaneously during the filling period, and the O-ring extrusion damage caused by rapid hydrogen filling pressure increase and the pressure drop reaction caused by pressure drop are effectively avoided.

[0020] 2) The application ingeniously designs a plurality of back pressure holes to communicate the gas filling channel and the sealing cavity, and the throttle damping effect and the zigzag extension pressure increasing / decreasing path formed between the back pressure hole, the sealing cavity and the communication cavity, which not only significantly reduces the disturbance influence of sudden pressure change on the sealing assembly during pressure increasing / decreasing process, and fundamentally reduces the probability of O-ring explosion, but also effectively disperses and stabilizes the high-pressure filling gas flow in the communication cavity together with the through hole, solves the problem of local high flow rate and vortex of high-pressure gas, and optimizes the hydrogen filling gun performance.

[0021] 3) The application uses the cam and the arc-shaped sliding groove to drive the claw to lock the hydrogen filling port, and the structure is relatively simple, the movement mode is clear, and the mechanical transmission efficiency is high. Compared with the current hydrogen filling gun structure using spring force for locking, the number of internal complex mechanical parts can be reduced, the reliability of the device can be greatly improved, and the misoperation failure rate can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the hydrogen filling gun as a whole in the embodiment of the application.

[0023] Figure 2 It is a structural schematic diagram of the first sealing assembly in the embodiment of the application.

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

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

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

[0027] In the diagram: 1. Hydrogen refueling gun housing; 2. Protective sleeve; 3. Claw; 4. Ejector pin; 5. Cam; 6. Flat key; 7. Rotary bushing; 8. Slide lock; 9. First sealing assembly; 10. Communicating cavity; 11. Rear cover; 12. Ejector pin spring; 13. Second sealing assembly; 14. First sealing cavity; 15. Second sealing cavity; 16. Pressure 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 Implementation

[0028] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0029] like Figure 1 As shown, the hydrogen refueling gun housing 1 is composed of a protective sleeve 2, a rotating bushing 7, and a rear cover 11; the front end of the hydrogen refueling gun housing 1 has an axially movable pawl 3 and a ejector pin 4; inside the hydrogen refueling gun housing 1 is a cam 5 connected to the pawl 3; the cam 5 is sleeved on the outside of the ejector pin 4; there is a flat key 6 between the rotating bushing 7 and the cam 5 that can transmit torque; inside the rear cover 11 is a clamping ring 16;

[0030] The hydrogen refueling gun housing 1 contains a pin spring 12 located behind the pin 4; the hydrogen refueling gun housing 1 contains a communicating cavity 10 connecting the hydrogen refueling hose and the hydrogen refueling gun housing 1.

[0031] like Figure 2 As shown, the rotating bushing 7 and the ejector pin 4 form a first sealing cavity 14; a first sealing assembly 9 is provided in the first sealing cavity 14; an annular groove 71 is opened in the middle of the first sealing cavity 14; the first sealing assembly 9 includes 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 into the arc-shaped groove of the left slider 93, and the right O-ring 92 fits into the arc-shaped groove of the right slider 94;

[0032] The tail of the rotating sleeve 7 is provided with a plurality of back pressure holes 72, which are communicated with the annular groove 71 and the communication cavity 10 respectively, so as to form a gradient throttling damping effect, prolong the hydrogen flow path, and improve the pressure stability between the first sealing cavity 14 and the communication cavity 10 during the instantaneous pressure increasing and decreasing process during hydrogen filling. The back pressure holes 72 simultaneously feedback and adjust the hydrogen flow of the hydrogen filling channel, effectively prevent the local hydrogen pressure and flow rate from suddenly changing, and further improve the safety of the hydrogen filling gun in the working state.

[0033] The first sealing assembly 9 is mainly used for preventing hydrogen leakage between the rotating sleeve 7 and the thimble 4. Before the filling starts, the left slider 93 and the right slider 94 are tightly attached to the left O-ring 91 and the right O-ring 92 respectively under the action of the spring 95, and the left O-ring 91 and the right O-ring 92 are elastically deformed to realize initial sealing. After the hydrogen filling starts, the hydrogen in the fast pressure state enters the first sealing cavity 14 after being gradually stabilized through the communication cavity 10, the back pressure holes 72 and the annular groove 71, the left slider 93 and the right slider 94 slowly move axially to the two sides under the action of the middle hydrogen pressure, the growth rate of the internal stress of the left O-ring 91 and the right O-ring 92 is slowed down, and the left O-ring 91 and the right O-ring 92 are continuously deformed to tightly attach to the rotating sleeve 7, the cam 5 and the thimble 4, so as to realize the 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 92 jointly act with the spring 95 and mutually compensate, so as to realize dynamic self-balancing and adaptive sealing. In the fast pressure decreasing stage near the end of the filling, the hydrogen returns to the communication cavity 10 through the first sealing cavity 14, the annular groove 71 and the back pressure holes 72, which greatly slows down the hydrogen pressure drop gradient in the first sealing cavity 14, the left O-ring 91 and the right O-ring 92 gradually rebound, the left slider 93 and the right slider 94 slowly move axially to the middle part, and the rubber O-ring is effectively prevented from being subjected to the explosion effect under the condition of fast pressure decreasing, so as to avoid sealing failure.

[0034] As shown in Figure 3 The second sealing cavity 15 is enclosed between the pressing ring 16, the rotating sleeve 7 and the rear cover 11; the second sealing cavity 15 is provided with the second sealing assembly 13; 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 attached to the arc-shaped groove of the slider 132;

[0035] The second sealing assembly 13 is mainly used for preventing hydrogen leakage between the rotating shaft sleeve 7 and the rear cover 11. Before the filling starts, the compression ring 16 cooperates with the rotating shaft sleeve 7 to pre-tighten the second sealing assembly 13, and the O-shaped ring 131 is elastically deformed to realize initial sealing under the support of the sliding block 132 and the second spring 133. After the hydrogen filling starts, a small amount of hydrogen may enter the second sealing cavity 15 through the tiny annular gap between the rotating shaft sleeve 7 and the compression ring 16, the sliding block 132 slowly moves towards the O-shaped ring 131 under the action of hydrogen pressure, slows down the internal stress growth rate of the O-shaped ring 131, and the O-shaped ring 131 continuously deforms to tightly contact the rotating shaft sleeve 7 and the rear cover 11, thereby realizing axial and radial sealing of the hydrogen leakage channel. When the filling pressure fluctuates or is rapidly reduced near the end of the filling, the tiny annular gap between the second sealing cavity 15 and the rotating shaft sleeve 7 and the compression ring 16 forms a throttling effect, slows down the internal hydrogen pressure drop gradient of the second sealing cavity 15, the O-shaped ring 131 gradually rebounds, and the left sliding block 132 slowly moves to the right side in the axial direction, effectively avoiding the explosion effect of the rubber O-shaped ring under the condition of rapid pressure reduction, which leads to sealing failure.

[0036] As shown in Figure 1 , 4 , the rotating shaft sleeve 7 and the rear cover 11 have a slide lock 8 therebetween, the rotating shaft sleeve 7 is externally provided with a main slide lock groove 73, and the rear cover 11 is externally provided with a secondary slide lock groove 111; the rotating shaft sleeve 7 is rotated to a filling point, the slide lock 8 is axially moved backward, and the rear end of the slide lock 8 is placed in the secondary slide lock groove 111 to lock the rotating shaft 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 shaft sleeve.

[0037] As shown in Figure 2 , the tail of the thimble 4 has a plurality of through holes 41 connected inside and outside, the thimble 4 moves to the right during the filling process, the through holes 41 are communicated with the communication cavity 10, hydrogen enters the internal flow channel space of the thimble 4 through the through holes 41, and then hydrogen is added to the hydrogen storage tank through the external hydrogen inlet.

[0038] As shown in Figure 4 , 5 , the transmission mechanism implemented in the present application is composed of the rotating shaft sleeve 7, the flat key 6, the cam 5 and the arc-shaped slide groove 51, one end of the claw 3 is clamped to the slide groove 51, when the rotating shaft sleeve 7 rotates, the flat key 6 transmits torque to drive the cam 5 to rotate, and the axis of the claw 3 moves forward. After the claw 3 moves axially forward, it is radially contracted and clamped to the hydrogen inlet under the action of the protective sleeve 2, and the front end of the arc-shaped slide groove limits the claw 3, which can prevent the claw 3 from falling off.

[0039] The working process of the specific hydrogen filling and sealing assembly is as follows: before high-pressure hydrogen filling, the hydrogen filling gun is aimed at the external hydrogen storage tank hydrogen filling port, the external hydrogen filling port is inserted into the front end of the thimble 4, the thimble 4 moves along the axial direction to compress the thimble spring, and the thimble tail hole 41 is connected with the communication cavity 10. Rotating the rotating sleeve 7 drives the cam 5 to rotate, so that the claw 3 moves axially forward along the sliding groove 51 and is clamped to the external hydrogen filling port under the action of the front inclined surface of the protection sleeve 2. Then the slide lock 8 moves axially backward, the rotating sleeve 7 is locked, and the slide lock 8 and the thimble 4 return to the position of the hydrogen filling machine, the hydrogen filling machine is opened, hydrogen is filled into the vehicle-mounted hydrogen storage bottle, and a return signal is given to the hydrogen filling gun. When the hydrogen filling is completed, the pressure in the thimble 4 and the communication cavity 10 is balanced, the thimble spring 12 is reset, the thimble 4 automatically retracts to the initial position, the hydrogen filling channel is closed, a filling completion signal is returned to the hydrogen filling gun, the slide lock 8 moves axially forward, the rotating sleeve 7 is unlocked, the rotating sleeve 7 is rotated to rotate the cam, the claw 3 moves radially outward to the initial position, and the hydrogen filling gun is safely removed to prevent safety hazards caused by misoperation.

[0040] For the first sealing assembly 9, before filling starts, the left sliding block 93 and the right sliding block 94 are tightly attached to the left O-shaped ring 91 and the right O-shaped ring 92 respectively under the action of the spring 95, the left O-shaped ring 91 and the right O-shaped ring 92 are elastically deformed to achieve initial sealing. After hydrogen filling starts, hydrogen gas in the rapid pressurization state enters the first sealing cavity 14 through the communication cavity 10, the back pressure hole 72 and the annular groove 71, the left sliding block 93 and the right sliding block 94 move axially to both sides under the action of the middle hydrogen pressure, the growth rate of the internal stress of the left O-shaped ring 91 and the right O-shaped ring 92 is slowed down, the left O-shaped ring 91 and the right O-shaped ring 92 are continuously deformed and tightly attached to the rotating sleeve 7, the cam 5 and the thimble 4, and the hydrogen leakage channel is axially and radially sealed. When the filling pressure fluctuates or part of the hydrogen enters the leakage channel, the left O-shaped ring 91 and the right O-shaped ring 92 jointly act on the spring 95 and compensate each other to achieve dynamic self-balancing and adaptive sealing. In the rapid decompression stage near the end of filling, hydrogen gas returns to the communication cavity 10 through the first sealing cavity 14, the annular groove 71 and the back pressure hole 72, the internal hydrogen pressure in the first sealing cavity 14 is greatly reduced, the left O-shaped ring 91 and the right O-shaped ring 92 gradually rebound, the left sliding block 93 and the right sliding block 94 move axially to the middle part, and the rubber O-shaped ring is effectively prevented from being subjected to the explosion effect under the condition of rapid decompression to cause sealing failure.

[0041] For the second sealing assembly 13, the compression ring 16 is matched with the rotating sleeve 7 to pre-tighten the second sealing assembly 13 before the filling starts, and the O-ring 131 is elastically deformed to achieve initial sealing under the support of the slider 132 and the second spring 133. After the hydrogen filling starts, a small amount of hydrogen may enter the second sealing cavity 15 through the tiny annular gap between the rotating sleeve 7 and the compression ring 16, the slider 132 slowly moves towards the O-ring 131 under the action of hydrogen pressure, slows down the internal stress growth rate of the O-ring 131, and the O-ring 131 continuously deforms to tightly contact the rotating sleeve 7 and the rear cover 11, thereby achieving axial and radial sealing of the hydrogen leakage channel. When the filling pressure fluctuates or the filling is about to end and the pressure is rapidly reduced, the tiny annular gap between the second sealing cavity 15 and the rotating sleeve 7 and the compression ring 16 forms a throttling effect, slows down the internal hydrogen pressure drop gradient of the second sealing cavity 15, the O-ring 131 gradually rebounds, the left slider 132 slowly moves to the right side in the axial direction, and the rapid pressure relief condition is effectively avoided. The rubber O-ring is prevented from being subjected to a blowout effect to cause sealing failure.

[0042] The above embodiments are only preferred embodiments of the present application, and are not a limitation on the technical solutions of the present application. Any technical solutions that can be realized on the basis of the above embodiments without creative labor shall be considered to fall within the protection scope of the present application.

Claims

1. A rotary locking type hydrogenation gun with an anti-explosion function, comprising a hydrogenation gun shell (1), characterized in that, The hydrogenation gun shell (1) includes a protective sleeve (2), a rotating shaft sleeve (7) and a rear cover (11) connected in sequence; the hydrogenation gun shell (1) is internally provided with an axially movable thimble (4), and the hydrogenation gun shell (1) is internally provided with a thimble spring (12) located behind the thimble (4); the hydrogenation gun shell (1) has a communication cavity (10) connecting the hydrogenation hose and the hydrogenation gun shell (1); the thimble (4) has a plurality of through holes (41) at the tail portion, which are used for being connected with the communication cavity (10); the hydrogenation gun shell (1) has an axially movable claw (3) at the front end; the hydrogenation gun shell (1) has a cam (5) connected with the claw (3) inside; the cam (5) is in transmission connection with the rotating shaft sleeve (7); rotating the rotating shaft sleeve (7) drives the cam (5) to rotate, so that the claw (3) is axially moved forward and is radially contracted and clamped to the hydrogenation port under the action of the front end inclined surface of the protective sleeve; The rotating shaft sleeve (7) and the thimble (4) have a first sealing assembly (9); the first sealing assembly (9) comprises a left O-shaped ring (91), a right O-shaped ring (92), axially movable left and right sliding blocks (93) and (94) and a spring (95); the left and right O-shaped rings (91) and (92) are arranged outside the thimble (4) and are in contact with the end face of the cam (5); the rotating shaft sleeve (7) is provided with an annular groove (71) at the tail portion; the left sliding block (93) is provided with a left spring groove (931) at the back portion; the right sliding block (94) is provided with a right spring groove (941) at the back portion; the spring (95) is arranged in the left and right spring grooves (931) and (941); one end of the left sliding block (93) is in contact with the spring (95), and the other end is in contact with the left O-shaped ring (91); one end of the right sliding block (94) is in contact with the spring (95), and the other end is in contact with the right O-shaped ring (92); A plurality of back pressure holes (72) are formed in the rotating shaft sleeve (7) at the right end of the annular groove (71).

2. The rotating locking type hydrogenation gun with the anti-leakage explosion function according to claim 1, characterized in that, The communication cavity (10), the rotating shaft sleeve (7) and the rear cover (11) have a second sealing assembly (13); the second sealing assembly (13) comprises an O-shaped ring (131), an axially movable sliding block (132) and a second spring (133); the O-shaped ring (131) is arranged at the end face gap between the rotating shaft sleeve (7) and the rear cover (11); the rear cover (11) is internally provided with a compression ring (16), and the compression ring (16) is provided with a spring groove (161) at the front end; the second spring (133) is arranged in the spring groove (161); one end of the sliding block (132) is in contact with the second spring (133), and the other end is in contact with the O-shaped ring (131).

3. The rotating lock type hydrogenation gun with the anti-leakage explosion function according to claim 1, characterized in that, The rotating shaft sleeve (7) and the rear cover (11) have a sliding lock (8); the rotating shaft sleeve (7) is externally provided with a main sliding lock groove (73), and the rear cover (11) is externally provided with a secondary sliding lock groove (111).

4. The rotating lock type hydrogenation gun with the anti-leakage explosion function according to claim 2, characterized in that, The left slider (93) and the left O-shaped ring (91) contact end face is arc-shaped groove; the right slider (94) and the right O-shaped ring (92) contact end face is arc-shaped groove; the slider (132) and the O-shaped ring (131) contact end face is arc-shaped groove.

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

6. The rotating lock type hydrogenation gun with the anti-leakage explosion function according to claim 1, characterized in that, The rotating shaft sleeve (7) and the cam (5) have a driving torque flat key (6) therebetween.

7. The rotating lock type hydrogenation gun with the anti-leakage explosion function according to claim 2, characterized in that, The left O-shaped ring (91) and the thimble and the rotating shaft sleeve are in interference fit; the right O-shaped ring (92) and the thimble and the rotating shaft sleeve are in interference fit; the O-shaped ring (131) and the rotating shaft sleeve and the rear cover are in interference fit.

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