CN112696610A - Novel general stopper seals up sealed hydrogenation rifle - Google Patents
Novel general stopper seals up sealed hydrogenation rifle Download PDFInfo
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- CN112696610A CN112696610A CN202011623017.4A CN202011623017A CN112696610A CN 112696610 A CN112696610 A CN 112696610A CN 202011623017 A CN202011623017 A CN 202011623017A CN 112696610 A CN112696610 A CN 112696610A
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- hydrogenation
- pressure
- rubber structural
- valve core
- gun
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
- F17C2270/0178—Cars
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a novel flooding plug sealed 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, a double mechanical locking mechanism is also arranged in the gun body, and a sealing structure is arranged on the hydrogenation mechanism. The sealing structure comprises a first rubber structural part and a second rubber structural part, the first rubber structural part is of a U-shaped structure, the second rubber structural part is arranged in the U-shaped structure, and the second rubber structural part is connected with the U-shaped structure in an interference fit mode. The novel flooding plug-sealed hydrogenation gun provided by the invention keeps good sealing performance in all working intervals from zero pressure to ultrahigh pressure, and a rubber part is adopted to replace a metal spring to serve as a middle tension providing part, so that the novel flooding plug-sealed hydrogenation gun can keep good sealing performance in the whole working pressure interval from zero pressure to ultrahigh pressure, and has good working performance and service life in a working environment where low-temperature high-pressure contacts with high-purity hydrogen for a long time.
Description
Technical Field
The invention relates to the technical field of new energy hydrogen fuel cell vehicles, in particular to a novel flooding plug seal 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 the core equipment for filling the produced hydrogen energy into the last important link of the 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 hydrogenation process, the hydrogenation port and the sealing element move relatively, the hydrogenation port can continuously rub with the sealing surface, the sealing performance of a hydrogenation gun researched and developed in China cannot meet the pressure requirement of 70MPa due to the limitation of a sealing technology, and then the service life is low if the wear resistance of a selected material is poor, the key sealing part has gas leakage potential safety hazard after being worn, and the actual use requirement cannot be met; the hydrogenation gun is a part which is frequently contacted by a worker in a hydrogenation station, and in order to ensure the use safety of the hydrogenation gun, the pressure resistance of a key part is not lower than 90MPa, particularly a sealing part.
Therefore, how to maintain good sealing performance in all the working intervals from zero pressure to ultrahigh pressure becomes a technical problem which is mainly solved by the scheme.
Disclosure of Invention
The invention aims to provide a novel flooding plug sealing hydrogenation gun, which solves the technical problem of maintaining good sealing performance in all working ranges from zero pressure to ultrahigh pressure, and adopts a rubber material part to replace a metal spring as a middle tension providing part, so that the rubber material part can maintain good sealing performance in the whole working pressure range from zero pressure to ultrahigh pressure, and simultaneously has good working performance and service life in a working environment where low temperature and high pressure are contacted with high-purity hydrogen for a long time.
The utility model provides a novel general stopper seals up sealed hydrogenation rifle, includes the rifle body, stock and handle, the internal hydrogenation mechanism that is provided with of rifle, the handle position is provided with pressure relief mechanism, the internal dual mechanical locking mechanism that still is provided with of rifle, be provided with seal structure in the hydrogenation mechanism.
The sealing structure comprises a first rubber structural part and a second rubber structural part, wherein the first rubber structural part is of a U-shaped structure, the second rubber structural part is arranged in the U-shaped structure, and the second rubber structural part is connected with the U-shaped structure in an interference fit manner; the second rubber structural part is also connected with the double mechanical locking mechanism.
When hydrogenation is carried out, high-pressure hydrogen is generated in the gun body, the high-pressure gas compresses the second rubber structural part to generate radial deformation expansion, and the second rubber structural part expands and extrudes two sealing surfaces of the external first structural part to be tightly attached to the sealing surface of the gun body to realize the sealing effect, and when the internal pressure of the hydrogenation gun is higher, the sealing property is higher.
The hydrogenation mechanism comprises a hydrogenation port, a valve core capable of axially sliding and a sealing element arranged on the outer side of the valve core, a hydrogenation channel is arranged in the gun body, the valve core is communicated with the hydrogenation channel, the hydrogenation port is arranged at the inlet position of the valve core, the wall surface of the valve core is also provided with an air hole, and the air hole is contacted with the sealing element;
the sealing structure is arranged on the outer side of the valve core and abutted against the sealing element, and the sealing structure is also in contact connection with the bushing.
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 tightening spring and a second tightening spring, wherein the first tightening spring and the second tightening spring are respectively arranged at two ends of the clamping jaw; and the outer end of the second shaft sleeve is also provided with a protective sleeve.
During gas filling, the gas filling port is inserted to push the clamping jaw open towards the periphery, the protrusion on the clamping jaw is embedded into the groove on the gas filling port, and meanwhile, the clamping jaw is continuously pressed under the action of the tightening spring to form first heavy locking. After the gas filling port is inserted, the protective sleeve moves forwards under the action of the compression spring, and the claw is extruded towards the middle through the contact of the inclined surface at the front end of the protective sleeve, so that secondary locking is formed.
Under the condition that the air inlet end is communicated, high-pressure air exists in the air passage, and the air pressure directly acts on the inner wall of the air cavity to push the protective sleeve to move forwards to generate locking force. This locking force superposes on the locking force that compression spring produced, and the cooperation plays a role, and the atmospheric pressure that lets in is higher, and locking force just is bigger.
The pressure relief mechanism comprises a pressure relief pipeline and a pressure relief pipe joint, and the pressure relief pipeline and the pressure relief pipe joint are arranged at the position of the handle.
The pressure relief mechanism is connected with the trigger.
The invention achieves the following remarkable effects:
(1) the novel rubber material is adopted, so that the novel rubber material has the characteristics of long-term working under a low-temperature condition, strong resistance to swelling caused by invasion and dissolution of hydrogen under a high-pressure high-purity hydrogen environment, low friction, high pressure resistance, long service life and the like, has self-sealing capability, can keep good sealing performance in all working intervals from zero pressure to ultrahigh pressure, and is simple and convenient to install;
(2) when hydrogenation is carried out, high-pressure hydrogen is generated in the gun body, the high-pressure gas compresses the second rubber structural part to generate radial deformation expansion, and the second rubber structural part expands and extrudes two sealing surfaces of the external first structural part to be tightly attached to the sealing surface of the gun body to realize the sealing effect, and when the internal pressure of the hydrogenation gun is higher, the sealing property is higher.
Drawings
FIG. 1 is a partial cross-sectional view of a hydrogenation lance in an embodiment of the invention.
Fig. 2 is a first structural view of a rubber structural member according to an embodiment of the present invention.
Fig. 3 is a structural diagram of a rubber structural member in the 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 tightening spring; 22. a claw; 23. a second tightening spring; 24. a bushing; 25. a first shaft sleeve; 26. a second shaft sleeve; 27. a return spring; 28. an airway; 41. a valve core; 42. a hydrogenation channel; 44. air holes; 45. a seal member; 51. a trigger; 61. a first rubber structural member; 62. a second rubber structural member.
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.
As shown in fig. 1 and 2, the interface during hydrogenation adopts a dual mechanical locking mechanism, which ensures safe connection of the interface, the dual mechanical locking mechanism comprises a second shaft sleeve 26, a jaw 22 arranged close to the inner wall of the second shaft sleeve 26, and a first tightening spring 21 and a second tightening spring 23 respectively arranged at two ends of the jaw 22, a bushing 24 is arranged in the second shaft sleeve 26, the bushing 24 is also connected with the jaw 22, the outer end of the second shaft sleeve 26 is connected with the first shaft sleeve 25, and the bushing 24 is connected to the inner wall of the shaft sleeve through a plurality of return springs; and the outer end of the second shaft sleeve is also provided with a protective sleeve 11.
A pressure relief mechanism is arranged in the hydrogenation gun, the pressure relief mechanism controls the opening and closing by controlling a trigger, and when hydrogenation is carried out, the trigger is pressed down, and a pressure relief pipeline is closed; after hydrogenation is finished, the trigger is restored, the pressure relief pipeline is opened, the left high-pressure gas in the hydrogenation gun can enter the pressure relief pipeline through the hydrogenation pipeline, the pressure relief pipeline is connected to the pressure relief pipe through the pressure relief pipe joint, and then the pressure relief pipe discharges the gun body 12, so that the left high-pressure gas in the cavity of the gun body 12 can be effectively subjected to pressure relief and discharge, the pressure relief is prevented from being discharged when the high-pressure gas is not in time, and the reuse of gas filling equipment is prevented from being influenced; the pressure relief mechanism is essentially prior art and will not be described in detail herein.
As shown in fig. 3, during hydrogenation, the valve core 41 is communicated with a hydrogenation pipeline, high-pressure gas exists in the valve core 41, the valve core 41 and the lining 24 need to be sealed to prevent hydrogen leakage, a novel flooding plug sealing type sealing structure is adopted at a sealing position between the valve core 41 and the lining 24, the valve core 41 needs to axially slide in the hydrogenation process, and relative motion exists between the valve core 41 and the sealing structure, which puts extremely high requirements on the sealing property and the material wear resistance of the sealing element; instead of a metal spring, a part of rubber material is now used as the intermediate tension provider. The novel flooding plug seal type seal structure is composed of a first rubber structural part 61 and a second rubber structural part 62, wherein the first rubber structural part 61 is in a U-shaped structure and made of super-wear-resistant materials, the second rubber structural part 62 is arranged in the U-shaped structure, and the second rubber structural part 62 is in interference fit with the U-shaped structure;
further, the first rubber structural part 61 contacts with two connected surfaces in the gun body 12 and plays a role in sealing, when hydrogenation is carried out, the pressure of high-pressure hydrogen generated in the gun body 12 reaches 70MPa, high-pressure gas acts on the second rubber structural part 62, the second rubber structural part 62 generates radial deformation expansion under pressure, and the second rubber structural part 62 expands to extrude two sealing surfaces of the external first structural part to expand so as to be tightly attached to the sealing surfaces of the gun body 12 and realize a sealing function, and when the internal pressure of the hydrogenation gun is higher, the sealing performance is higher;
when the hydrogenation gun works, the sealing structure can bear huge pressure while ensuring the sealing performance, the working conditions of the sealing part are poor in comparison, the thermal deformation is large, the device is often vibrated and impacted, the device is not tight, the tightening force is too large, the device is repeatedly used repeatedly and is contracted and deformed, the internal stress is gathered and damaged beyond the fatigue strength, and the material is aged and exfoliates to form damage and leakage. The analysis simulation sealing ring material adopts PTEF, the pressure is applied to 70MPa, the fatigue life of the initial simulation result is more than 90000min (about 1500 hours), and the safety and reliability of the used sealing ring structure and material are fully proved.
Under the non-aerated state, the first tightening spring 21 is in a relaxed state, and the second tightening spring 23 has a limiting effect on the clamping jaw 22; when gas is added, the hydrogenation port 13 is inserted into the connector at the end of the vehicle, and the clamping jaws 22 are pushed open towards the periphery. Under the action of the first tightening spring 21, the clamping jaw 22 has a radial tightening force, so that after the hydrogenation port 13 is inserted for a certain distance, the protrusion on the clamping jaw 22 is embedded into the groove on the vehicle end gas filling port, and meanwhile, the first locking is formed by continuous pressing under the action of the first tightening spring 21.
In addition, after the hydrogenation port 13 is inserted, the first sleeve 25 moves forwards under the action of the return spring 27, and the claw 22 is pressed towards the middle by the inclined surface contact of the front end of the first sleeve, which is secondary locking. The double locking system can provide an upper limit fixed locking force to prevent the hydrogenation gun from being released from the hydrogenation port 13.
Furthermore, the valve core 41 and the bush 24 are designed to be sealed, and the self-sealing air channel 28 is adopted, so that in order to prevent hydrogen from being released due to the fact that a hydrogenation button is opened by misoperation when the hydrogenation port 13 is not inserted, the air channel 28 near the hydrogen outlet is designed to be in a self-sealing mode.
The wall surface of the valve core 41 of the hydrogen outlet channel is provided with an air hole 44 which communicates the inside and the outside of the pipeline, when no hydrogenation port 13 is inserted, one end of the air hole 44 on the outer wall of the pipeline of the valve core 41 is put into the shell and matched with the outer wall of the shell and is sealed by a sealing element 45, at the moment, if a hydrogenation button is opened, hydrogen reaches a cavity behind the channel without an outlet and cannot be leaked;
during hydrogenation, the hydrogenation port 13 is inserted, the valve core 41 is pushed backwards, the air hole 44 at the rear end of the valve core 41 is moved out of the sealing element 45 and communicated with the cavity where the hydrogenation channel 42 is located, gas enters the valve core 41 from the cavity through the air hole, and hydrogen filling is started; after the filling is finished, the hydrogenation port 13 is drawn out, the valve core 41 is reset under the action of the reset spring 27, the air hole at the rear end of the valve core 41 enters the sealing element 45, the hydrogen passage is cut off, and the protection effect is formed again.
The self-closed gas channel 28 is designed, so that the gas channel 28 near the hydrogen outlet is designed to be self-closed in order to prevent hydrogen from being released due to the fact that a hydrogenation button is opened by misoperation when the hydrogenation port 13 is not inserted. The wall surface of the hydrogen outlet channel is provided with air holes which communicate the inside and the outside of the pipeline. When no hydrogenation mouth 13 inserts, the gas pocket is in the cooperation of casing outer wall in the one end income casing of pipeline outer wall, is sealed by the casing, if open the hydrogenation button this moment, hydrogen does not have the export in reaching the cavity at passageway rear, can't reveal.
Note: after the hydrogenation gun is connected with the car end, the hydrogenation channel is opened, and after the hydrogenation gun is removed from the car end, the hydrogenation channel is closed.
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 (6)
1. The utility model provides a novel general stopper seals up sealed hydrogenation rifle, includes the rifle body, stock and handle, its characterized in that, the internal hydrogenation mechanism that is provided with of rifle, the handle position is provided with pressure release mechanism, the internal dual mechanical locking mechanism that still is provided with of rifle, be provided with seal structure in the hydrogenation mechanism.
2. The novel flooding plug sealed hydrogenation gun according to claim 1, wherein the sealing structure comprises a first rubber structural member and a second rubber structural member, the first rubber structural member is a U-shaped structure, the second rubber structural member is arranged in the U-shaped structure, and the second rubber structural member is connected with the U-shaped structure in an interference fit manner; the second rubber structural part is also connected with the double mechanical locking mechanism.
3. The novel flooding plug sealed hydrogenation gun according to claim 2, wherein the hydrogenation mechanism comprises a hydrogenation port, a valve core capable of axially sliding, and a sealing element arranged outside the valve core, a hydrogenation channel is arranged in the gun body, the valve core is communicated with the hydrogenation channel, the hydrogenation port is arranged at the inlet position of the valve core, the wall surface of the valve core is further provided with an air hole, and the air hole is in contact with the sealing element;
the sealing structure is arranged on the outer side of the valve core and abutted against the sealing element, and the sealing structure is also in contact connection with the bushing.
4. The novel flooding plug sealed hydrogenation gun according to claim 3, characterized in that the dual mechanical locking structure comprises a second shaft sleeve, a jaw arranged close to the inner wall of the second shaft sleeve, a first tightening spring and a second tightening spring respectively arranged at two ends of the jaw, wherein a bushing is arranged in the second shaft sleeve, the bushing is further connected with the jaw, the outer end of the second shaft sleeve is connected with the first shaft sleeve, and the bushing is connected to the inner wall of the shaft sleeve through a plurality of return springs; and the outer end of the second shaft sleeve is also provided with a protective sleeve.
5. The new flood-plug sealed hydroblasting gun according to claim 4, wherein the pressure relief mechanism comprises a pressure relief conduit, a pressure relief union, the pressure relief conduit and the pressure relief union being disposed at the grip location.
6. The new flood-seal hydrogenation gun according to claim 5, wherein said pressure relief mechanism is connected to a trigger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011623017.4A CN112696610A (en) | 2020-12-31 | 2020-12-31 | Novel general stopper seals up sealed hydrogenation rifle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011623017.4A CN112696610A (en) | 2020-12-31 | 2020-12-31 | Novel general stopper seals up sealed hydrogenation rifle |
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| Publication Number | Publication Date |
|---|---|
| CN112696610A true CN112696610A (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011623017.4A Pending CN112696610A (en) | 2020-12-31 | 2020-12-31 | Novel general stopper seals up sealed hydrogenation rifle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464740A (en) * | 2021-07-21 | 2021-10-01 | 浙江浙能航天氢能技术有限公司 | Hydrogenation sealing device with leakage-proof mechanism |
| CN114811417A (en) * | 2022-04-22 | 2022-07-29 | 武汉中极氢能源发展有限公司 | Prevent hydrogenation rifle for hydrogenation station of static |
| CN117847406A (en) * | 2024-03-07 | 2024-04-09 | 中国特种设备检测研究院 | Hydrogen leakage detection device and method for hydrogen adding station |
-
2020
- 2020-12-31 CN CN202011623017.4A patent/CN112696610A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464740A (en) * | 2021-07-21 | 2021-10-01 | 浙江浙能航天氢能技术有限公司 | Hydrogenation sealing device with leakage-proof mechanism |
| CN113464740B (en) * | 2021-07-21 | 2024-05-31 | 浙江浙能航天氢能技术有限公司 | Hydrogenation sealing device with leak-proof mechanism |
| CN114811417A (en) * | 2022-04-22 | 2022-07-29 | 武汉中极氢能源发展有限公司 | Prevent hydrogenation rifle for hydrogenation station of static |
| CN114811417B (en) * | 2022-04-22 | 2024-04-16 | 武汉中极氢能源发展有限公司 | Antistatic hydrogenation gun for hydrogenation station |
| CN117847406A (en) * | 2024-03-07 | 2024-04-09 | 中国特种设备检测研究院 | Hydrogen leakage detection device and method for hydrogen adding station |
| CN117847406B (en) * | 2024-03-07 | 2024-06-18 | 中国特种设备检测研究院 | Hydrogen leakage detection device and method for hydrogen adding station |
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