CN112728400A

CN112728400A - Atmospheric pressure active locking type hydrogenation rifle

Info

Publication number: CN112728400A
Application number: CN202011618145.XA
Authority: CN
Inventors: 贾海峰; 徐扬; 宋夫玉; 毕见宁; 张士明
Original assignee: Weihai Honglin Electric Power Technology Co ltd
Current assignee: Weihai Honglin Electric Power Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-04-30

Abstract

The invention provides an air pressure active locking type hydrogenation gun which comprises a gun body, a gun seat and a handle, wherein a hydrogenation mechanism and a pressure relief mechanism are arranged in the gun body, the hydrogenation mechanism is connected with a discharge pipeline in the pressure relief mechanism through an air charging pipeline, the hydrogenation mechanism is connected with a vehicle end, a blowing mechanism is arranged in a hydrogenation port of the gun body, and a double mechanical locking structure and an air pressure active locking mechanism are also arranged in the gun body. The air pressure active locking mechanism comprises a first shaft sleeve, a lock rod, a second return spring and a sealing ring, wherein a gear boss is arranged at one end of the lock rod, the other end of the lock rod is movably matched with a groove formed in the first shaft sleeve, the second return spring is sleeved on the outer side of the lock rod, and two ends of the second return spring are respectively abutted against the inner sides of the gear boss and the first shaft sleeve. The air pressure active locking type hydrogenation gun provided by the invention not only avoids the danger of gun jumping, but also removes ice blocks, and avoids the damage of the ice blocks to a first sealing element inside a vehicle interface.

Description

Atmospheric pressure active locking type hydrogenation rifle

Technical Field

The invention relates to the technical field of new energy hydrogen fuel cell vehicles, in particular to an air pressure active locking type hydrogenation gun.

Background

The new energy industry is the trend of the current social development, the hydrogen energy technology industry is rapidly developed under the condition that the energy problem is increasingly highlighted and the strong support of the government is provided, and then the key technology breakthrough of a hydrogen fuel cell power system and a whole vehicle is driven, the hydrogen fuel cell vehicle gradually enters the market, and particularly more and more citizens in developed cities accept and use hydrogen fuel cell vehicles. The hydrogenation gun is a core device of an important link and is used for filling the produced hydrogen energy into a hydrogen fuel cell automobile. In order to realize the rapid and safe addition of hydrogen energy into a hydrogen fuel automobile, the filling pressure standard of hydrogen is gradually improved, 25MPa, 35MPa and 70MPa hydrogenation guns have been developed abroad, and 35MPa hydrogenation guns have been developed domestically.

In the application of the prior hydrogenation machine, most hydrogenation guns are connected with a vehicle and then are locked in a mechanical mode, but the upper limit of the locking force is a fixed value, so that the danger of falling off can be caused under the condition that the pressure is continuously increased, the risk of gun jumping can be caused under the condition that the manual external force or misoperation cannot be prevented, and the great potential safety hazard is caused; in addition, hydrogen is generally cooled to-10 ℃ or-40 ℃ during hydrogen filling, the low-temperature hydrogen can cool the hydrogenation port and the gun body, after hydrogenation is finished, the hydrogenation port is moved out from the vehicle end and exposed in the air, the temperature of the gun body is far lower than that of the surrounding environment, the inner wall of the hydrogenation port can be rapidly condensed and frozen, and if hydrogenation is carried out on the next vehicle, the ice block can scratch the sealing part inside the vehicle port under the pushing of the high-speed flowing hydrogen, so that the potential safety hazard of hydrogenation leakage is caused.

Therefore, in order to solve the problems of the existing products in the market, the invention provides the air pressure active locking type hydrogenation gun, which can well solve the problems.

Disclosure of Invention

The invention aims to provide an air pressure active locking type hydrogenation gun, which solves the technical problem of how to avoid large potential safety hazard in the hydrogenation process, not only avoids the danger of gun jumping, but also removes ice blocks and avoids the damage of the ice blocks to a first sealing part in a vehicle interface.

The utility model provides an atmospheric pressure initiative locking type hydrogenation rifle, includes the rifle body, rifle seat and handle, internal hydrogenation mechanism and the pressure relief mechanism of being provided with of rifle, hydrogenation mechanism pass through the gas filling pipeline with discharge pipe among the pressure relief mechanism connects, hydrogenation mechanism is connected with the vehicle end, be provided with in the rifle body hydrogenation mouth and blow off the mechanism, the rifle is internal still to be provided with and to be used for fixing the dual mechanical locking structure and the atmospheric pressure initiative locking mechanism of hydrogenation mechanism, pressure relief mechanism with the trigger that sets up on the handle is connected.

The air pressure active locking mechanism comprises a first shaft sleeve, a lock rod, a second return spring and a sealing ring, wherein a gear boss is arranged at one end of the lock rod, the other end of the lock rod is movably matched with a groove formed in the first shaft sleeve, the second return spring is sleeved on the outer side of the lock rod, and two ends of the second return spring are respectively abutted against the inner sides of the gear boss and the first shaft sleeve.

The blowing mechanism comprises a blowing air passage, an air injection loop and an air injection mechanism, the hydrogenation mechanism comprises a hydrogenation valve core, and the blowing air passage is connected with the hydrogenation valve core.

The blowing air passages are parallel to the hydrogenation passage, the joint of the blowing air passages and the valve core is an L-shaped through hole, a second sealing element is arranged between the L-shaped through hole and the hydrogenation valve core, and the hydrogenation valve core is movably connected with the hydrogenation passage or the blowing air passages.

The air injection loop blows off condensed water and ice in the hydrogenation port in time after hydrogenation, so that the pipeline is prevented from being damaged, or the reuse of air entrainment equipment is prevented from being influenced, and the problem of low use efficiency of the traditional hydrogenation gun is solved.

Further, hydrogenation machine inside is equipped with solitary blowdown power and air drying system, carries out the drying and provides the power of blowing with the air, and the inside blowdown system gas blow pipe of hydrogenation machine is connected with the blowdown air flue of hydrogenation rifle afterbody, and hydrogenation mouth inside is equipped with the blowdown mechanism, through blowdown air flue to hydrogenation case inner wall jetting dry air or nitrogen gas, will hydrogenate the end in the air instantaneous formation condensation that freezes in the hydrogenation mouth exposes the air clean.

Be equipped with two blowdown air flues in the rifle, hydrogenation case passageway rear side is equipped with the gas pocket, and the case shifts backward during hydrogenation and the air entrainment passageway switch-on, and the case shifts forward after the hydrogenation is finished and blows off the air flue switch-on to its inside comdenstion water.

The double mechanical locking structure comprises a second shaft sleeve, a clamping jaw arranged close to the inner wall of the second shaft sleeve, a first fastening spring and a second fastening spring, wherein the first fastening spring and the second fastening spring are respectively arranged at two ends of the clamping jaw;

the outer end of the second shaft sleeve is connected with the first shaft sleeve, the outer side of the bushing is connected to the inner wall of the second shaft sleeve through a plurality of return springs, the center of the bushing is provided with a valve core in a penetrating mode, and a second sealing element is arranged between the valve core and the bushing.

The double mechanical locking mechanism is that after the claw lug boss is embedded into the hydrogenation port groove at the vehicle end, two pairs of claws of the shaft sleeve are radially locked, and the trigger is pressed to lock the shaft sleeve II.

When the gas is added, the fastening spring is compressed to generate pressure to push the protective sleeve to move forwards, and the clamping jaw is extruded towards the middle until the limiting position can complete mechanical locking.

The first shaft sleeve is connected with the second shaft sleeve, and the first shaft sleeve is locked by a lock cylinder of the air pressure active locking mechanism and cannot slide axially.

The shaft sleeve is provided with a groove matched with the locking rod, the shaft sleeve can slide in the axial direction of the hydrogenation pipe, the locking rod is provided with a gear boss, the front end of the gear boss is provided with a return spring, and the first return spring is in a pre-compression state and the locking rod is in a reset state under the condition of no gas filling; under the condition that the air inlet end is communicated, high-pressure gas exists in the air passage, the gas pressure directly acts on the inner wall of the air cavity and further acts on the bottom of the locking rod in the air cavity, the locking rod is pushed by the high-pressure gas to move forwards to enter the groove of the shaft sleeve, the shaft sleeve is fixed to enable the shaft sleeve to be fixed in the axial direction, and at the moment, the spring is in a further compressed state; further, after high pressure in the hydrogenation finishing gun is released, pressure acting on the bottom of the lock rod is eliminated, and the first return spring rebounds; the locking rod is reset under the action of the reset spring and is separated from the groove of the shaft sleeve, the pressure active locking system is released, and the shaft sleeve can move axially.

The pressure relief mechanism comprises a pressure relief valve core, a first sealing element and a third reset spring, wherein the first sealing element and the third sealing element are arranged on the outer wall of the pressure relief valve core, the third reset spring is arranged on the outer side of the pressure relief valve core in a sleeved mode, two ends of the third reset spring are respectively abutted against a first fixing element and a second fixing element, a T-shaped through hole is formed in the pressure relief valve core, the T-shaped through hole is communicated with a relief loop, the relief loop is connected with a low-pressure gas storage tank in a hydrogen.

The residual high-pressure gas in the hydrogenation gun can enter the low-pressure gas storage tank in the station through the gas exhaust pipeline, and the residual high-pressure gas in the gun body cavity can be effectively decompressed and discharged;

before hydrogenation, a hydrogenation gun interface is connected with a vehicle end, a trigger is pressed down after the hydrogenation gun interface is connected with the vehicle end, the trigger pushes a shaft sleeve to perform mechanical locking firstly, the trigger pushes a pressure relief valve core to move forwards, a T-shaped through hole is formed in the pressure relief valve core, the outer wall of the pressure relief valve core is sealed by a sealing element II, and the pressure relief valve core moves forwards and then closes a relief loop; further, after hydrogenation is finished, the trigger is restored, the pressure relief valve core is reset under the action of a second reset spring, the T-shaped through hole in the pressure relief valve core is communicated with a relief circuit, and high-pressure gas is released into a low-pressure gas storage tank in the hydrogenation station through the relief circuit;

further, the air pressure in the gun is in a normal pressure state after the high-pressure gas is released, the trigger is further reset, the shaft sleeve is pushed to move backwards, the mechanical locking function is removed, at the moment, the hydrogenation gun can be safely moved out from the vehicle end interface, and the hydrogenation is finished.

The invention achieves the following remarkable effects:

(1) the reliability of the locking mechanism and the internal high-pressure release mechanism is ensured by arranging the double mechanical locking structure and the pneumatic active locking mechanism and utilizing the combined action of the clamping jaw and the locking rod;

(2) be provided with and blow off the mechanism, through blowing off air flue to hydrogenation case inner wall jetting dry air or nitrogen gas, will hydrogenate the end in the air instantaneous inside formation condensation that freezes and blow off totally in the hydrogenation mouth exposes, avoided the ice-cube can fish tail vehicle interface inner seal piece one under the hydrogen promotion of high-speed flow, avoided the potential safety hazard that hydrogenation revealed.

Drawings

FIG. 1 is a schematic diagram of a hydrogenation gun according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a hydrogenation lance in an embodiment of the invention.

Fig. 3 is a structural diagram of an air pressure active locking mechanism in an embodiment of the invention.

FIG. 4 is an external structural view of a hydrogenation gun in an embodiment of the present invention.

Wherein the reference numerals are: 11. a protective sleeve; 12. a gun body; 13. a hydrogenation port; 21. a first fastening spring; 22. a claw; 23. a second fastening spring; 24. a bushing; 25. a first shaft sleeve; 26. a second shaft sleeve; 27. a first return spring; 32. a groove; 33. a lock lever; 34. a seal ring; 35. a second return spring; 41. a valve core; 42. a hydrogenation channel; 43. a spool spring; 44. a main air passage; 50. a pressure relief channel; 51. a pressure relief mechanism; 52. a trigger; 53. a first fixing part; 54. a third return spring; 55. a pressure relief valve core; 56. a first sealing element; 57. a second fixing part; 61. a second sealing element; 62. an airway; 63. a liner airway; 64. the air passage is blown off.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is described below by way of specific embodiments.

The hydrogenation mechanism is composed of a valve core 41, a valve core spring 43 and a sealing structure, the valve core is of a hollow tubular structure, an air passage is arranged at the tail part of the valve core, the valve core spring 43 is arranged at the rear end of the valve core, the valve core spring is in a reset state before hydrogenation, the air passage at the tail part of the valve core is communicated with a blowing air passage 64 of the hydrogenation gun, the blowing air passage is connected with a lining air passage 63, an air passage 62 is arranged on a second sealing element 61, and the valve core and a main air passage; the head of the valve core 41 is connected with the hydrogenation port at the vehicle end during hydrogenation, the hydrogenation port at the vehicle end props against the valve core 41 and moves backwards during connection, the valve core 41 moves backwards to compress the valve core spring 43, the tail air passage of the valve core 41 moves backwards to be communicated with the main air passage 44, the hydrogenation gun blowing air passage 64 is closed, after hydrogenation is finished, the valve core 41 is removed from the hydrogenation port at the vehicle end, the valve core spring 43 is restored, the valve core 41 moves forwards under the action of the valve core spring 43, is closed with the hydrogenation main air passage and is communicated with the blowing air passage 64.

Under the non-aerated state, the first fastening spring 21 is in a relaxed state, and the second fastening spring 23 has a limiting effect on the clamping jaw 22; when gas is added, the hydrogenation port 13 is inserted into the vehicle end connector, and the clamping jaws 22 are pushed open towards the periphery. Under the action of the first fastening spring 21, the clamping jaw 22 has a radial tightening force, so that the protrusion on the clamping jaw 22 is embedded into the groove 32 on the gas filling port after the hydrogenation port 13 is inserted into a certain distance; after the hydrogenation port 13 is inserted, the first shaft sleeve 25 moves forwards under the action of the return spring, the claw 22 is pressed towards the middle through the inclined surface contact of the front end of the first shaft sleeve, the vehicle end port is locked, and a hydrogenation gun is prevented from being separated from the hydrogenation port 13.

As shown in fig. 1, further, by adopting a dual mechanical locking structure and a pneumatic active locking mechanism, the upper limit of the locking force is a fixed value, and in case of increasing pressure, there may be a risk of disengagement;

the double mechanical locking structure comprises a second shaft sleeve 26, a clamping jaw 22 arranged close to the inner wall of the second shaft sleeve 26, a first fastening spring 21 and a second fastening spring 23 which are respectively arranged at two ends of the clamping jaw 22, a bushing 24 is arranged in the second shaft sleeve 26, the bushing 24 is also connected with the clamping jaw 22, the outer end of the second shaft sleeve 26 is connected with a first shaft sleeve 25, the bushing 24 is connected to the inner wall of the shaft sleeve through a plurality of first return springs 27, a valve core 41 penetrates through the center of the bushing 24, and a valve core spring 43 is arranged at the inner end of the valve.

The air pressure active locking mechanism consists of a lock rod 33, a seal ring 34 and a second return spring 35, a first shaft sleeve 25 groove 32 matched with the lock rod 33 is arranged on a first shaft sleeve 25 corresponding to the position of the lock rod 33, the first shaft sleeve 25 can slide in the axial direction of the hydrogenation pipe, a gear boss is arranged on the lock rod 33, the second return spring 35 is arranged at the front end of the gear boss, and in the state of no gas filling, the second return spring 35 is in a pre-compression state and the lock rod 33 is in a return state;

under the condition that the air inlet end is communicated, high-pressure gas exists in the air passage 28, the gas pressure directly acts on the inner wall of the air cavity and further acts on the bottom of the locking rod 33 in the air cavity, the locking rod 33 is perpendicular to the direction of the hydrogen adding port 13, the high-pressure gas pushes the locking rod 33 to move forwards to enter the groove 32 of the first shaft sleeve 25, the first shaft sleeve 25 is fixed to enable the axial direction of the first shaft sleeve to be fixed, and at the moment, the second reset spring 35 is in a.

Further, after high pressure in the hydrogenation finishing gun is released, the pressure acting on the bottom of the lock rod 33 is eliminated, and the second return spring 35 rebounds; the lock rod 33 is reset under the action of the second reset spring 35 and is separated from the groove 32 of the first shaft sleeve 25, the pressure active locking system is released, the first shaft sleeve 25 can axially move to drive the second shaft sleeve 26 to move, and the locking device is released.

As shown in fig. 1 and 3, the gun body 12 is further provided with a pressure relief mechanism 51, the pressure relief mechanism 51 includes a pressure relief valve core 55, a first sealing element 56 sealed on the outer wall of the pressure relief valve core 55, and a third return spring 54 sleeved on the outer side of the pressure relief valve core 55, two ends of the third return spring 54 respectively abut against the first fixing element 53 and the second fixing element 57, a T-shaped through hole is provided in the pressure relief valve core 55, the T-shaped through hole is communicated with a discharge loop, the discharge loop is connected with a low-pressure gas storage tank in the hydrogen station, and the outer end of the pressure relief valve core 55.

Before hydrogenation, a hydrogenation gun interface is connected with a vehicle end, a trigger 52 is pressed down after the hydrogenation gun interface is connected with the vehicle end, the trigger 52 pushes a shaft sleeve to perform mechanical locking firstly, then the trigger 52 pushes a pressure relief valve core 55 to move forwards, a T-shaped through hole is formed in the pressure relief valve core, the outer wall of the pressure relief valve core is sealed by a sealing element I, and the pressure relief valve core moves forwards and then closes a relief loop; further, after hydrogenation is finished, the trigger 52 is restored, the pressure relief valve core 55 is reset under the action of the three reset springs 43, the T-shaped through hole in the pressure relief valve core is communicated with the relief circuit, and high-pressure gas is released into the low-pressure gas storage tank in the hydrogenation station through the relief circuit.

Further, after the high-pressure gas is released, the air pressure in the gun is in a normal pressure state, the trigger 52 is further reset to push the first shaft sleeve 25 to move backwards, the first shaft sleeve 25 is fixedly connected with the second shaft sleeve 26, the second shaft sleeve 26 moves backwards, the inner plane is separated from the head limiting plane of the clamping jaw 22, the clamping jaw 22 can move radially, the mechanical locking function is relieved, the hydrogenation gun can be safely moved out of the vehicle end port at the moment, and the hydrogenation is finished.

As shown in fig. 2, further, a blowing mechanism is arranged inside the hydrogenation port 13, two blowing air passages 64 are arranged in the gun body, two blowing air passages 64 are arranged at positions corresponding to the bushing 24, the two blowing air passages 64 are parallel, the two blowing air passages are symmetrically distributed on two sides of the air filling passage, the blowing air passages 64 are L-shaped through holes, a first sealing element is arranged between the L-shaped short through hole and the valve core air passage 28, an air passage 28 is arranged on the first sealing element, the valve core is moved backwards to be communicated with the air filling passage during hydrogenation, the valve core is moved forwards to be communicated with the blowing air passages after hydrogenation is finished, dry air or nitrogen blows dry air or nitrogen to the inner wall of the hydrogenation valve core through the blowing air passages, and condensation icing blowing cleaning is instantly formed in the exposed air of the.

Note: the external structure of the hydrogenation gun is schematically shown in FIG. 4.

Although the embodiments of the present invention have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the scope of the embodiments of the present invention.

Claims

1. The utility model provides an atmospheric pressure initiative locking type hydrogenation rifle, includes the rifle body, stock and handle, its characterized in that, internal hydrogenation mechanism and the pressure relief mechanism of being provided with of rifle, hydrogenation mechanism through the air entrainment pipeline with discharge pipe among the pressure relief mechanism connects, hydrogenation mechanism is connected with the vehicle end, be provided with in the rifle body hydrogenation mouth and blow off the mechanism, the rifle is internal still to be provided with and to be used for fixing the dual mechanical locking structure and the atmospheric pressure initiative locking mechanism of hydrogenation mechanism, pressure relief mechanism with the trigger that sets up on the handle is connected.

2. The atmospheric pressure actively-locked hydrogenation rifle of claim 1, wherein the atmospheric pressure actively-locked mechanism comprises the first shaft sleeve, a lock rod, a second return spring and a seal ring, wherein a gear boss is arranged at one end of the lock rod, the other end of the lock rod is movably matched with a groove arranged on the first shaft sleeve, the second return spring is sleeved outside the lock rod, and two ends of the second return spring respectively abut against the inner sides of the gear boss and the first shaft sleeve.

3. The atmospheric-pressure active-locking type hydrogenation gun as claimed in claim 2, wherein the blowing mechanism comprises a blowing air passage, an air injection loop and an air injection mechanism, the hydrogenation mechanism comprises a hydrogenation valve core, and the blowing air passage is connected with the hydrogenation valve core.

4. The air pressure active locking type hydrogenation gun according to claim 3, wherein the number of the blowing air passages is two, the blowing air passages are parallel to the hydrogenation passage, the joint of the blowing air passages and the valve core is an L-shaped through hole, a second sealing element is arranged between the L-shaped through hole and the hydrogenation valve core, and the hydrogenation valve core is movably connected with the hydrogenation passage or the blowing air passages.

5. The gas pressure active locking type hydrogenation gun according to claim 4, wherein the double mechanical locking structure comprises a second shaft sleeve, a jaw arranged close to the inner wall of the second shaft sleeve, a first fastening spring and a second fastening spring respectively arranged at two ends of the jaw, a bushing is arranged in the second shaft sleeve, and a boss at one end of the jaw is embedded in the bushing;

6. The air pressure active locking type hydrogenation gun according to claim 5, wherein the pressure release mechanism comprises a pressure release valve core, a first sealing element arranged on the outer wall of the pressure release valve core, and a third return spring sleeved on the outer side of the pressure release valve core, two ends of the third return spring respectively abut against the first fixing element and the second fixing element, a T-shaped through hole is arranged in the pressure release valve core, the T-shaped through hole is communicated with a release loop, the release loop is connected with a low-pressure air storage tank in the hydrogenation station, and the outer end of the pressure release valve core is connected with a trigger.