CN220551642U - Self-sealing quick plug for fuel cell stack activation test - Google Patents
Self-sealing quick plug for fuel cell stack activation test Download PDFInfo
- Publication number
- CN220551642U CN220551642U CN202323591497.2U CN202323591497U CN220551642U CN 220551642 U CN220551642 U CN 220551642U CN 202323591497 U CN202323591497 U CN 202323591497U CN 220551642 U CN220551642 U CN 220551642U
- Authority
- CN
- China
- Prior art keywords
- sealing
- core body
- core
- spring
- sealing plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 151
- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 239000000446 fuel Substances 0.000 title claims abstract description 39
- 230000004913 activation Effects 0.000 title claims abstract description 37
- 239000000498 cooling water Substances 0.000 claims description 29
- 210000001503 joint Anatomy 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003570 air Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 150000002431 hydrogen Chemical class 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 238000011056 performance test Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- Y02E60/50—Fuel cells
Landscapes
- Fuel Cell (AREA)
Abstract
The utility model relates to a self-sealing quick connector for fuel cell stack activation test, comprising: first interface assembly and second interface assembly, first interface assembly includes: first interface main part, first core, first sealing plug, first spring, ball support, ball, lock sleeve and second spring, first sealing plug include first spring butt portion, first sealed cooperation portion and first to the top, and first core is equipped with second step portion, and first spring sets up between first spring butt portion and second step portion, and first core is equipped with sealed cooperation portion of second, and second interface assembly includes: the second interface main part, second core, second sealing plug and third spring, the second sealing plug includes second spring butt portion, third sealed cooperation portion and second to the top, and the second core is equipped with fourth sealed cooperation portion, and the second core is equipped with the draw-in groove with ball matched with to the problem of remaining water outflow in the interface when having solved the disconnection.
Description
Technical Field
The utility model relates to the field of fuel cells, in particular to a self-sealing quick connector for fuel cell stack activation test.
Background
In order to ensure the manufacturing quality of the fuel cells, all fuel cell stacks need to be connected to a test bench for stack activation test and performance test after the manufacturing is completed. The test bench is provided with medium interfaces required by fuel cell stack activation test and performance test, namely an air inlet and outlet interface, a hydrogen inlet and outlet interface and a cooling water inlet and outlet interface, and the quick-connection device is also provided with medium interfaces required by fuel cell stack activation test and performance test, namely an air inlet and outlet interface, a hydrogen inlet and outlet interface and a cooling water inlet and outlet interface. In the prior art, a medium interface of a test board and a medium interface on a quick-connection device are generally connected by adopting a clamp. Please refer to the existing document (patent application number 202120638662.7), the first hydrogen, air and cooling water inlet and outlet pipe fittings on the testing device and the second hydrogen, air and cooling water inlet and outlet pipe fittings on the quick connection device are connected by adopting a clamp, when the last pile test is completed, the clamp needs to be loosened to separate the first hydrogen, air and cooling water inlet and outlet pipe fittings on the testing device from the second hydrogen, air and cooling water inlet and outlet pipe fittings on the quick connection device, and the defect of the structure is that: the loosening of the clamp can lead to the residual cooling water in the interface flowing to the ground, thereby not only causing the waste of water resources, but also causing the ground to be wet and slippery and forming potential safety hazards.
Therefore, there is a need for a self-sealing quick connector for fuel cell stack activation test that solves the above-mentioned problems.
Disclosure of Invention
In order to solve the above problems, an object of the present utility model is to provide a self-sealing quick connector for fuel cell stack activation test, which can prevent cooling water from flowing out during disconnection.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a self-sealing quick connector for fuel cell stack activation testing, comprising: a first interface assembly and a second interface assembly, the first interface assembly comprising: the ball lock comprises a first interface main body part, a first core body, a first sealing plug, a first spring, a ball support, a plurality of balls, a lock sleeve and a second spring, wherein the first interface main body part is provided with a first step part, the first core body is arranged in the first interface main body part, the end part of the first core body is in butt joint with the first step part of the first interface main body part, the first sealing plug is arranged in the first core body, the first sealing plug comprises a first spring butt part, a first seal fit part and a first pair of tops, a plurality of first through holes are formed in the first spring butt part, the first core body is provided with a second step part, the first spring is arranged between the first spring butt part of the first sealing plug and the second step part of the first core body, the first core body is provided with a second seal fit part matched with the first seal fit part of the first sealing plug, the first core body is provided with a mounting groove for mounting the ball support, the first sealing plug is arranged in the mounting groove, the first spring support comprises a first spring butt part, the first seal fit part and the first step part is arranged between the first core body and the first lock sleeve, the first core body is provided with a plurality of ball limit sleeve assembly, and the first core body is arranged between the first step part and the first core body, and the first core body is provided with a limit sleeve, and the first step part is arranged between the first core body and the limit sleeve, and the first core body is arranged between the first core: the second interface main part, second core, second sealing plug and third spring, adopt threaded connection between second interface main part and the second core, the second sealing plug sets up in the second core, the second sealing plug includes second spring butt portion, third seal cooperation portion and second to the top, be equipped with a plurality of second through-hole on the second spring butt portion, the second of second sealing plug cooperatees to the first to the top of first sealing plug to the top, second interface main part is equipped with third step portion, the third spring sets up between the third step portion of second interface main part and the second spring butt portion of second sealing plug, the second core inboard be equipped with the third seal cooperation portion matched with fourth seal cooperation portion of second sealing plug, the second core outside be equipped with ball matched with draw-in groove.
Preferably, a self-sealing quick connector for fuel cell stack activation test in the present utility model is further provided as: the outer side of the first interface main body part is provided with a limiting block matched with the lock sleeve.
Preferably, a self-sealing quick connector for fuel cell stack activation test in the present utility model is further provided as: when the second spring is compressed, a space for the balls to move along the direction away from the clamping groove is arranged between the lock sleeve and the first core body.
Preferably, a self-sealing quick connector for fuel cell stack activation test in the present utility model is further provided as: when the first interface assembly and the second interface assembly are in butt joint, when the ball of the first interface assembly is buckled in the clamping groove of the second interface assembly, the first pair of tops of the first interface assembly and the second pair of tops of the second interface assembly are mutually propped, so that a first cooling water circulation gap is formed between the second sealing fit part of the first core body and the first sealing fit part of the first sealing plug, and a second cooling water circulation gap is formed between the fourth sealing fit part of the second core body and the third sealing fit part of the second sealing plug.
Preferably, a self-sealing quick connector for fuel cell stack activation test in the present utility model is further provided as: when the first interface assembly is disconnected with the second interface assembly, the second sealing matching part of the first core body is tightly attached to the first sealing matching part of the first sealing plug to realize sealing, and the fourth sealing matching part of the second core body is tightly attached to the third sealing matching part of the second sealing plug to realize sealing.
Preferably, a self-sealing quick connector for fuel cell stack activation test in the present utility model is further provided as: the sealing surface formed by the second sealing matching part of the first core body and the first sealing matching part of the first sealing plug is a conical surface, and the sealing surface formed by the fourth sealing matching part of the second core body and the third sealing matching part of the second sealing plug is a conical surface.
Preferably, a self-sealing quick connector for fuel cell stack activation test in the present utility model is further provided as: one of the first interface assembly and the second interface assembly is connected with the cooling water inlet and outlet interface of the quick-connection device through threads, and the other is connected with the hose through a clamp.
Preferably, a self-sealing quick connector for fuel cell stack activation test in the present utility model is further provided as: the balls are uniformly distributed along the circumferential direction of the ball support.
Preferably, a self-sealing quick connector for fuel cell stack activation test in the present utility model is further provided as: the ball support is provided with an opening.
Compared with the prior art, the utility model has the following beneficial effects: the self-sealing quick connector for the fuel cell stack activation test is simple in structure and convenient to install, cooling water is communicated in the connectors when the quick connectors are in butt joint, and the cooling water is blocked in the connectors and does not flow outwards when the quick connectors are disconnected.
Drawings
Fig. 1 is a schematic perspective view of a self-sealing quick connector for fuel cell stack activation test according to the present utility model, wherein the first interface assembly and the second interface assembly are disclosed in the case of docking.
Fig. 2 is a schematic perspective view of a self-sealing quick connector for fuel cell stack activation test according to the present utility model, wherein the first interface assembly and the second interface assembly are disclosed in a disconnected state.
FIG. 3 is a schematic cross-sectional view of a self-sealing quick connector for fuel cell stack activation testing according to the present utility model, wherein the first interface assembly is shown docked with the second interface assembly.
FIG. 4 is a schematic cross-sectional view of a self-sealing quick connector for fuel cell stack activation testing according to the present utility model, wherein the first interface assembly is shown disconnected from the second interface assembly.
Fig. 5 is a schematic diagram of an explosion structure of a self-sealing quick connector for fuel cell stack activation test according to the present utility model.
In fig. 1 to 5: 1. the first interface assembly, 10, the first interface body portion, 100, the first step portion, 101, the stopper, 11, the first core, 110, the second step portion, 111, the second seal mating portion, 112, the mounting groove, 113, the ball receiving hole, 114, the first stopper step portion, 12, the first sealing plug, 120, the first spring abutment portion, 1200, the first through hole, 121, the first seal mating portion, 122, the first pair of tops, 13, the first spring, 14, the ball holder, 140, the opening, 15, the ball, 16, the lock sleeve, 160, the second stopper step portion, 17, the second spring, 2, the second interface assembly, 20, the second interface body portion, 200, the third step portion, 21, the second core, 210, the fourth seal mating portion, 211, the clamping groove, 22, the second sealing plug, 220, the second spring abutment portion, 2200, the second through hole, 221, the third seal mating portion, 222, the second pair of tops, 23, the third spring, 3, the first cooling water gap, 4, the second cooling water gap, and 5, the cooling water gap.
Detailed Description
The self-sealing quick connector for fuel cell stack activation test according to the present utility model is described in further detail below by way of specific examples.
Referring to fig. 1 to 5, a self-sealing quick connector for fuel cell stack activation test includes: in this embodiment, the first interface assembly 1 is in threaded connection with the cooling water inlet and outlet interface on the quick-connection device, the second interface assembly 2 is in clamp connection with one free end of the hose, and the other free end of the hose is in clamp connection with the cooling water inlet and outlet interface on the test bench. Of course, in other embodiments, the second connector assembly 2 is connected with the cooling water inlet and outlet connector of the quick-connection device by adopting screw threads, and the first connector assembly 1 is connected with one free end of the hose by adopting a clamp.
The first interface assembly 1 includes: the ball joint comprises a first interface main body part 10, a first core 11, a first sealing plug 12, a first spring 13, a ball support 14, a plurality of balls 15, a lock sleeve 16 and a second spring 17, wherein the first interface main body part 10 is provided with a first step part 100, the first core 11 is arranged in the first interface main body part 10, the end part of the first core 11 is abutted against the first step part 100 of the first interface main body part 10, the first sealing plug 12 is arranged in the first core 11, the first sealing plug 12 comprises a first spring abutting part 120, a first sealing matching part 121 and a first pair of top parts 122, the first spring abutting part 120 is provided with a plurality of first through holes 1200, the first core 11 is provided with a second step part 110, the first spring 13 is arranged between the first spring abutting part 120 of the first sealing plug 12 and the second step part 110 of the first core 11, the first core 11 is provided with a first sealing matching part 111 matched with the first sealing matching part 121 of the first sealing plug 12, the first sealing plug 12 is provided with a plurality of ball support 14 and the ball support 14 is arranged in the circumferential direction of the ball support 14, and the ball support 14 is provided with a plurality of ball support 14. The first core 11 is provided with a plurality of ball receiving holes 113 matched with the balls 15, and the balls 15 are received in the ball receiving holes 113 of the first core 11. The lock sleeve 16 is arranged on the outer sides of the first interface main body part 10 and the first core 11, the second spring 17 is sleeved on the first core 11 and is positioned between the lock sleeve 16 and the first interface main body part 10, the first core 11 is provided with a first limiting step part 114, the lock sleeve 16 is provided with a second limiting step part 160 matched with the first limiting step part 114, the first limiting step part 114 is arranged to limit the leftward movement distance of the lock sleeve 16, the outer side of the first interface main body part 10 is provided with a limiting block 101 matched with the lock sleeve 16, and the limiting block 101 is arranged to limit the rightward movement distance of the lock sleeve 16.
The second interface assembly 2 includes: the second interface main body portion 20, the second core 21, the second sealing plug 22 and the third spring 23, the second interface main body portion 20 and the second core 21 are connected by threads, the second sealing plug 22 is disposed in the second core 21, the second sealing plug 22 includes a second spring abutting portion 220, a third sealing matching portion 221 and a second pair of top portions 222, a plurality of second through holes 2200 are disposed on the second spring abutting portion 220, the second pair of top portions 222 of the second sealing plug 22 are matched with the first pair of top portions 122 of the first sealing plug 12, the second interface main body portion 20 is provided with a third step portion 200, the third spring 23 is disposed between the third step portion 200 of the second interface main body portion 20 and the second spring abutting portion 220 of the second sealing plug 22, a fourth sealing matching portion 210 matched with the third sealing matching portion 221 of the second sealing plug 22 is disposed on the inner side of the second core 21, a clamping groove 211 matched with the ball 15 is disposed on the outer side of the second core 21, and in this embodiment, the clamping groove 211 is in a circular arc shape.
The working principle of the self-sealing quick connector for the fuel cell stack activation test in the utility model is as follows: when the first interface assembly 1 and the second interface assembly 2 are abutted, the balls 15 of the first interface assembly 1 are clamped in the clamping grooves 211 of the second interface assembly 2 to realize locking therebetween, the first pair of top parts 122 of the first interface assembly 1 and the second pair of top parts 222 of the second interface assembly 2 are mutually propped, the first springs 13 are compressed to form a first cooling water circulation gap 3 between the second sealing matching part 111 of the first core 11 and the first sealing matching part 121 of the first sealing plug 12, the third springs 23 are compressed to form a second cooling water circulation gap 4 between the fourth sealing matching part 210 of the second core 21 and the third sealing matching part 221 of the second sealing plug 22, cooling water enters from the first interface main body part 10, then passes through the first through holes 1200 on the first spring abutting part 120, then passes through the first cooling water circulation gap 3 and the second cooling water circulation gap 4, then passes through the second through holes on the second spring abutting part 220, finally reaches the second interface main body part 20 and finally flows out of the second interface main body part 20. When the first interface assembly 1 and the second interface assembly 2 need to be disconnected, the lock sleeve 16 is moved rightward, the second spring 17 is compressed, a space 5 for the balls 15 to move along a direction away from the clamping groove 211 (i.e. a direction away from the center of a circle) is formed between the lock sleeve 16 and the first core 11, then the second interface assembly 2 is pulled out leftward, in the pulling process, the balls 15 are pushed into the space 5 formed between the lock sleeve 16 and the first core 11, the balls 15 are separated from the clamping groove 211, the lock catch is released, after the first interface assembly 1 and the second interface assembly 2 are disconnected, the second sealing fit portion 111 of the first core 11 is tightly attached to the first sealing fit portion 121 of the first sealing plug 12 to realize sealing, and a sealing surface formed by the second sealing fit portion 111 of the first core 11 and the first sealing fit portion 121 of the first sealing plug 12 is a conical surface. The fourth sealing matching part 210 of the second core 21 is tightly attached to the third sealing matching part 221 of the second sealing plug 22 to realize sealing, and the sealing surface formed by the fourth sealing matching part 210 of the second core 21 and the third sealing matching part 221 of the second sealing plug 22 is a conical surface, so that the water remained in the first interface assembly 1 is sealed in the first interface assembly 1, the water remained in the second interface assembly 2 is sealed in the second interface assembly 2, and the water is prevented from flowing on the ground.
In summary, the self-sealing quick connector for fuel cell stack activation test has simple structure and convenient installation, and the inside of the connector is communicated with cooling water when the quick connector is in butt joint, and the cooling water is blocked in the connectors and does not flow outwards when the quick connector is disconnected.
The above-described embodiments are merely illustrative of the principles and functions of the present utility model, and some of the practical examples, not intended to limit the utility model; it should be noted that modifications and improvements can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the present utility model.
Claims (9)
1. A self-sealing quick connector for fuel cell stack activation test is characterized in that: comprising the following steps: a first interface assembly and a second interface assembly, the first interface assembly comprising: the ball lock comprises a first interface main body part, a first core body, a first sealing plug, a first spring, a ball support, a plurality of balls, a lock sleeve and a second spring, wherein the first interface main body part is provided with a first step part, the first core body is arranged in the first interface main body part, the end part of the first core body is in butt joint with the first step part of the first interface main body part, the first sealing plug is arranged in the first core body, the first sealing plug comprises a first spring butt part, a first seal fit part and a first pair of tops, a plurality of first through holes are formed in the first spring butt part, the first core body is provided with a second step part, the first spring is arranged between the first spring butt part of the first sealing plug and the second step part of the first core body, the first core body is provided with a second seal fit part matched with the first seal fit part of the first sealing plug, the first core body is provided with a mounting groove for mounting the ball support, the first sealing plug is arranged in the mounting groove, the first spring support comprises a first spring butt part, the first seal fit part and the first step part is arranged between the first core body and the first lock sleeve, the first core body is provided with a plurality of ball limit sleeve assembly, and the first core body is arranged between the first step part and the first core body, and the first core body is provided with a limit sleeve, and the first step part is arranged between the first core body and the limit sleeve, and the first core body is arranged between the first core: the second interface main part, second core, second sealing plug and third spring, adopt threaded connection between second interface main part and the second core, the second sealing plug sets up in the second core, the second sealing plug includes second spring butt portion, third seal cooperation portion and second to the top, be equipped with a plurality of second through-hole on the second spring butt portion, the second of second sealing plug cooperatees to the first to the top of first sealing plug to the top, second interface main part is equipped with third step portion, the third spring sets up between the third step portion of second interface main part and the second spring butt portion of second sealing plug, the second core inboard be equipped with the third seal cooperation portion matched with fourth seal cooperation portion of second sealing plug, the second core outside be equipped with ball matched with draw-in groove.
2. The self-sealing quick connector for fuel cell stack activation test as claimed in claim 1, wherein: the outer side of the first interface main body part is provided with a limiting block matched with the lock sleeve.
3. The self-sealing quick connector for fuel cell stack activation test as claimed in claim 1, wherein: when the second spring is compressed, a space for the balls to move along the direction away from the clamping groove is arranged between the lock sleeve and the first core body.
4. The self-sealing quick connector for fuel cell stack activation test as claimed in claim 1, wherein: when the first interface assembly and the second interface assembly are in butt joint, when the ball of the first interface assembly is buckled in the clamping groove of the second interface assembly, the first pair of tops of the first interface assembly and the second pair of tops of the second interface assembly are mutually propped, so that a first cooling water circulation gap is formed between the second sealing fit part of the first core body and the first sealing fit part of the first sealing plug, and a second cooling water circulation gap is formed between the fourth sealing fit part of the second core body and the third sealing fit part of the second sealing plug.
5. The self-sealing quick connector for fuel cell stack activation test as claimed in claim 1, wherein: when the first interface assembly is disconnected with the second interface assembly, the second sealing matching part of the first core body is tightly attached to the first sealing matching part of the first sealing plug to realize sealing, and the fourth sealing matching part of the second core body is tightly attached to the third sealing matching part of the second sealing plug to realize sealing.
6. The self-sealing quick connector for fuel cell stack activation test as claimed in claim 5, wherein: the sealing surface formed by the second sealing matching part of the first core body and the first sealing matching part of the first sealing plug is a conical surface, and the sealing surface formed by the fourth sealing matching part of the second core body and the third sealing matching part of the second sealing plug is a conical surface.
7. The self-sealing quick connector for fuel cell stack activation test as claimed in claim 1, wherein: one of the first interface assembly and the second interface assembly is connected with the cooling water inlet and outlet interface of the quick-connection device through threads, and the other is connected with the hose through a clamp.
8. The self-sealing quick connector for fuel cell stack activation test as claimed in claim 1, wherein: the balls are uniformly distributed along the circumferential direction of the ball support.
9. The self-sealing quick connector for fuel cell stack activation test as claimed in claim 1, wherein: the ball support is provided with an opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323591497.2U CN220551642U (en) | 2023-12-28 | 2023-12-28 | Self-sealing quick plug for fuel cell stack activation test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323591497.2U CN220551642U (en) | 2023-12-28 | 2023-12-28 | Self-sealing quick plug for fuel cell stack activation test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220551642U true CN220551642U (en) | 2024-03-01 |
Family
ID=90009084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323591497.2U Active CN220551642U (en) | 2023-12-28 | 2023-12-28 | Self-sealing quick plug for fuel cell stack activation test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220551642U (en) |
-
2023
- 2023-12-28 CN CN202323591497.2U patent/CN220551642U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110513553B (en) | Floating fluid connector and fluid connector assembly | |
| CN113124248B (en) | Panel connecting quick connector for vehicle power battery cooling pipeline | |
| CN109058629B (en) | Blind-mate fluid connector capable of being plugged under pressure | |
| CN104500887B (en) | Fluid connector | |
| CN208474747U (en) | A kind of double self-locking plug quick couplings | |
| CN220551642U (en) | Self-sealing quick plug for fuel cell stack activation test | |
| CN109519629B (en) | Floating fluid connection plug, socket, and connector and cooling system comprising same | |
| CN104565629B (en) | Fluidly connect device assembly | |
| CN201875333U (en) | Slave and master quick joint | |
| CN216279978U (en) | A joint Assembly and trade electric vehicle for trading electric vehicle | |
| CN212616940U (en) | Quick-operation joint and automatic test equipment | |
| CN201177128Y (en) | Multi-channel quick joint | |
| CN211875380U (en) | Novel valve core structure capable of being plugged under pressure | |
| CN204901160U (en) | Integrative quick change coupler of liquid electricity | |
| CN212246202U (en) | Oil leak intelligence joint that drops is prevented dragging by filling station's oil gun | |
| CN221300471U (en) | Floating quick connector | |
| CN218972097U (en) | Fluid connector | |
| CN211530104U (en) | Fuel cell stack inlet and outlet structure | |
| CN219734581U (en) | Quick sealing connector with lock | |
| CN218972096U (en) | Quick connector for fluid pipeline | |
| CN210860211U (en) | Water pipe interfacing apparatus and new energy automobile | |
| CN215981355U (en) | Gas interface mechanism with safety protection | |
| CN220816920U (en) | Quick connector for anti-corrosion flame-retardant rubber tube | |
| CN112549509A (en) | Quick interfacing apparatus of step shaping runner | |
| CN221075648U (en) | Quick fluid joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |