CN117483288B - Leak-proof joint for hydrogen-conveying pipeline - Google Patents
Leak-proof joint for hydrogen-conveying pipeline Download PDFInfo
- Publication number
- CN117483288B CN117483288B CN202311848406.0A CN202311848406A CN117483288B CN 117483288 B CN117483288 B CN 117483288B CN 202311848406 A CN202311848406 A CN 202311848406A CN 117483288 B CN117483288 B CN 117483288B
- Authority
- CN
- China
- Prior art keywords
- wall
- bushing
- pipeline
- hydrogen
- joint
- 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.)
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Links
- 239000001257 hydrogen Substances 0.000 claims abstract description 31
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 18
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 13
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 10
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 claims description 9
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 4
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 23
- 238000011084 recovery Methods 0.000 abstract description 9
- 210000002445 nipple Anatomy 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 description 55
- 239000000463 material Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 150000002431 hydrogen Chemical class 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000027455 binding Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Cleaning In General (AREA)
Abstract
The invention relates to the technical field of hydrogen delivery pipes, and discloses a leakage-proof joint of a hydrogen delivery pipeline, which comprises a joint assembly, wherein the joint assembly comprises: an inner liner; the outer wall of the inner bushing is fixedly connected with the inner wall of the outer bushing; a pipeline connecting groove is formed between the outer lining sleeve and the inner lining sleeve; the outer wall of the inner bushing and the inner wall of the outer bushing are provided with inclined annular blocks; and a pipeline is arranged in a pipeline connecting groove formed by the inner lining sleeve and the outer lining sleeve, and the side wall of the pipeline is tightly connected with the inclined annular block. After the hydrogen is blocked for a plurality of times by each leakage-proof measure, redundant escaping hydrogen enters the leakage flow annular cavity from the gap, residual recovery is carried out through the leakage flow annular cavity, and finally the escaping hydrogen enters the gas collecting bottle through the gas nipple and the leakage flow pipe, so that recovery of escaping gas is completed.
Description
Technical Field
The invention relates to the technical field of hydrogen delivery pipes, in particular to a leakage-proof joint of a hydrogen delivery pipeline.
Background
The hydrogen pipeline is one of the important ways to solve the hydrogen storage and transportation, and the current hydrogen pipeline mainly faces several important problems from the technical point of view: including material problems, sealing problems, etc., for problems encountered in hydrogen delivery, there is a need for a joint that reduces the occurrence of leaks in hydrogen delivery, while collecting hydrogen to reduce the concentration of hydrogen in air, and to reduce the risk factor.
Disclosure of Invention
The invention provides the following technical scheme:
The cleaning equipment for the anti-leakage joint of the hydrogen transmission pipeline comprises a cleaning component, wherein the cleaning component is arranged in a pipeline joint groove of a joint assembly;
The cleaning assembly includes:
a drive ring;
The end part of the cleaning rod is fixed on the driving ring, the outer wall of the cleaning rod is provided with cleaning bristles, the cleaning rod stretches into the pipeline connecting groove, and the cleaning bristles are propped against the inner wall of the pipeline connecting groove;
The driving device is arranged at one end of the driving ring and drives the driving ring to rotate along the central axis of the joint assembly.
Preferably, the joint assembly includes:
an inner liner;
The outer wall of the inner bushing is fixedly connected with the inner wall of the outer bushing;
a pipeline connecting groove is formed between the outer lining sleeve and the inner lining sleeve;
the outer wall of the inner bushing and the inner wall of the outer bushing are provided with inclined annular blocks;
And a pipeline is arranged in a pipeline connecting groove formed by the inner lining sleeve and the outer lining sleeve, and the side wall of the pipeline is tightly connected with the inclined annular block.
Preferably, a drainage annular cavity is formed between the inner wall of the outer bushing and the outer wall of the inner bushing, a drainage hole is formed in the outer bushing at the position of the drainage annular cavity, and an air tap is fixedly arranged in the drainage hole.
Preferably, the other end of the air tap is connected with a bleeder tube, the other end of the bleeder tube is fixedly provided with a gas collecting bottle, and the bleeder tube is spirally wound on the outer wall of the outer bushing.
Preferably, the pipe comprises a first PA layer, a first adhesive, an EVOH layer, a second adhesive, and a second PA layer from inside to outside, and EVOH (ethylene-vinyl alcohol copolymer ) is a copolymer of ethylene and vinyl alcohol, and is generally used for packaging materials. The material has good barrier property, and particularly has strong barrier capability to oxygen, fragrance, solvent, grease and the like;
The pipeline adopts a high-barrier five-layer coextrusion structure, the first PA layer, the first adhesive, the EVOH layer, the second adhesive and the second PA layer are coated with the aluminum pipe with the thickness of 1mm to further separate hydrogen, so that the effect of double separation is effectively realized;
The pipeline is connected with the joint assembly through inner hole reaming equipment, the inner hole of the joint assembly is expanded and deformed through the reaming equipment, and under the joint expansion and constraint actions of the inner lining sleeve and the outer lining sleeve, after each layer of the pipeline is deformed from the inner material to the outer material, the pipeline is fully combined with the joint assembly material, and gaps are filled, so that the sealing connection effect is achieved;
meanwhile, the inner bushing is provided with two sealing rings which are tightly matched with the inner wall of the pipeline to realize double-line sealing;
The joint surface of the end part of the pipeline and the inner bushing is also provided with a sealing ring for blocking;
After the hydrogen is blocked for a plurality of times by each leakage prevention measure, redundant escaping hydrogen enters the leakage annular cavity from the gap, residual recovery is carried out by the leakage annular cavity, and finally the escaping hydrogen enters the gas collecting bottle through the gas nipple and the leakage pipe, so that recovery of escaping gas is completed;
the bleeder pipes are arranged in a spiral winding way along the axis direction of the nonmetallic composite pipeline, and after winding is completed, the bleeder pipes with proper lengths are reserved to ensure that the bleeder pipes can be normally connected with the gas collecting bottle;
and then the whole pipe system is coated with the outer coating so as to protect the bleeder pipe and reduce the generation of external blocking damage.
Preferably, a protecting cover is further installed at one end of the inner bushing, the inner wall of the protecting cover is fixedly connected with the inner bushing and is sealed through a sealing ring, and the protecting cover covers the air tap.
Preferably, the middle part of the driving ring is connected with a fixing frame, the middle part of the fixing frame is connected with a driving device, and the driving device is a motor.
Preferably, the middle part of cleaning rod is hollow setting, the inside one end of cleaning rod has seted up the feed port, the feed port link up with the one end of actuating ring, the feed port is used for injecting the outside cleaning solution to the inside of cleaning rod, cleaning rod outer wall connection has first brush hair.
Preferably, an extension rod is further arranged in the cleaning rod, one end of the extension rod is in sliding connection with the inside of the cleaning rod, a limiting structure is arranged in a cavity in the end part of the extension rod and the inside of the cleaning rod, the inside of the extension rod is hollow, the outer wall of the extension rod is connected with second bristles, and through holes are formed in the side walls of the extension rod and the cleaning rod;
Because the inner lining and the outer lining are affected by the processing environment when being assembled, oily substances or other impurities possibly enter a pipeline joint groove formed by the inner lining and the outer lining, so that the pipeline can slip or be blocked when being matched with the pipeline joint groove, the pipeline joint groove is required to be cleaned, and the interior is ensured to be clean, so that the oil-free substances and other impurities are not contained;
The specific operation steps are as follows: before using reaming equipment, clean the inside of pipeline joint groove earlier, adopt clean subassembly, pour into clean pole and extension pole with the cleaning solution from the feed port in, then the motor drive ring of rethread outside rotates, let drive ring move clean pole and extension pole synchronous rotation, and place whole joint assembly and clean subassembly vertically, under the drive of motor, produce centrifugal force, let clean pole and the inside cleaning solution of extension pole throw away from the through-hole, then scrape the inner wall of pipeline joint groove through first brush hair and second brush hair, thereby let oily material and impurity decompose, take out clean subassembly at last, invert whole joint assembly, pour inside cleaning solution, reuse clear water washes, thereby accomplish the cleanness to pipeline joint groove, let the frictional force of pipeline joint groove inner wall strengthen, thereby let joint assembly better with the pipeline gomphosis.
Compared with the prior art, the invention provides the leakage-proof joint of the hydrogen transmission pipeline, which has the following beneficial effects:
1. According to the invention, the pipeline adopts a high-barrier five-layer co-extrusion structure, the first PA layer, the first adhesive, the EVOH layer, the second adhesive and the second PA layer, and meanwhile, the hydrogen is further blocked by wrapping the pipeline with the aluminum pipe with the thickness of 1mm, so that the effect of double blocking is effectively realized.
2. In the invention, the pipeline and the joint assembly are connected through the reaming equipment, the reaming equipment expands and deforms the inner hole of the joint assembly, and under the joint expansion and binding action of the inner lining and the outer lining, after each layer of the pipeline is deformed from the inner material to the outer material, the pipeline and the joint assembly material are fully combined, and the gap is filled, so that the sealing connection effect is achieved.
3. After the hydrogen is blocked for a plurality of times by each leakage-proof measure, redundant escaping hydrogen enters the leakage flow annular cavity from the gap, residual recovery is carried out through the leakage flow annular cavity, and finally the escaping hydrogen enters the gas collecting bottle through the gas nipple and the leakage flow pipe, so that recovery of escaping gas is completed.
Drawings
FIG. 1 is a perspective view of a joint assembly of the present invention;
FIG. 2 is a cross-sectional view of the joint assembly of the present invention;
FIG. 3 is a cross-sectional view of the inner and outer liners of the present invention;
FIG. 4 is a layered construction of the pipe of the present invention;
FIG. 5 is a block diagram of the installation of the joint assembly and cleaning components of the present invention;
FIG. 6 is a cross-sectional view of the joint assembly and cleaning component of the present invention;
FIG. 7 is a partial perspective view of a cleaning assembly of the present invention;
Fig. 8 is a partial structural cross-sectional view of the cleaning assembly of the present invention.
In the figure: 100. a joint assembly; 101. an inner liner; 102. an outer liner; 103. a protective cover; 104. a pipe; 1041. a first PA layer; 1042. a first adhesive; 1043. an EVOH layer; 1044. a second adhesive; 1045. a second PA layer; 105. a drainage annular cavity; 106. an air tap; 107. a bleeder tube; 108. a gas collecting bottle; 109. a sloped annular block; 110. a drain hole; 200. a cleaning assembly; 201. a drive ring; 202. a fixing frame; 203. a cleaning lever; 204. a first bristle; 205. an extension rod; 206. a feed hole; 207. and second bristles.
Detailed Description
Examples
Referring to fig. 1-8, the present embodiment discloses a cleaning apparatus for a leak-proof joint of a hydrogen transfer line, comprising a cleaning assembly 200 installed in a pipe joint groove of a joint assembly 100;
The cleaning assembly 200 includes:
a drive ring 201;
The end part of the cleaning rod 203 is fixed on the driving ring 201, the outer wall of the cleaning rod 203 is provided with cleaning bristles, the cleaning rod 203 stretches into the pipeline connecting groove, and the cleaning bristles are propped against the inner wall of the pipeline connecting groove;
The driving device is installed at one end of the driving ring 201, and drives the driving ring 201 to rotate along the central axis of the joint assembly 100.
As a possible embodiment, a fixing frame 202 is connected to the middle part of the driving ring 201, and the middle part of the fixing frame 202 is connected to a driving device, and the driving device is a motor.
As a possible embodiment, the middle portion of the cleaning rod 203 is hollow, one end inside the cleaning rod 203 is provided with a feeding hole 206, the feeding hole 206 is communicated with one end of the driving ring 201, the feeding hole 206 is used for injecting the external cleaning liquid into the cleaning rod 203, and the outer wall of the cleaning rod 203 is connected with the first bristles 204.
As a possible embodiment, an extension rod 205 is further disposed inside the cleaning rod 203, one end of the extension rod 205 is slidably connected with the inside of the cleaning rod 203, a limit structure is disposed in the end of the extension rod 205 and the cavity inside the cleaning rod 203, the inside of the extension rod 205 is hollow, the outer wall of the extension rod 205 is connected with a second bristle 207, and through holes are formed in the side walls of the extension rod 205 and the cleaning rod 203;
Because the inner bushing 101 and the outer bushing 102 are affected by the processing environment during assembly, oily substances or other impurities possibly enter a pipeline joint groove formed by the inner bushing 101 and the outer bushing 102, so that the pipeline 104 can slip or be blocked when being matched with the pipeline joint groove, the pipeline joint groove needs to be cleaned, and the interior is ensured to be clean, so that the oil substances and other impurities are not contained;
The specific operation steps are as follows: before using reaming equipment, firstly cleaning the inside of a pipeline connecting groove, adopting a cleaning component 200, injecting cleaning liquid into a cleaning rod 203 and an extension rod 205 from a feeding hole 206, then driving a driving ring 201 to rotate through an external motor, enabling the driving ring 201 to drive the cleaning rod 203 and the extension rod 205 to synchronously rotate, vertically placing the whole joint assembly 100 and the cleaning component 200, generating centrifugal force under the driving of the motor, throwing the cleaning liquid inside the cleaning rod 203 and the extension rod 205 out of a through hole, scraping the inner wall of the pipeline connecting groove through a first bristle 204 and a second bristle 207, thereby decomposing oily substances and impurities, finally taking out the cleaning component 200, inverting the whole joint assembly 100, pouring out the internal cleaning liquid, flushing with clear water, thereby finishing the cleaning of the pipeline connecting groove, enhancing the friction force of the inner wall of the pipeline connecting groove, and enabling the joint assembly 100 to be better embedded with a pipeline 104.
Examples
As shown in fig. 1-3, the present embodiment discloses a leak-proof joint for a hydrogen transfer line, which comprises the following structure:
An inner liner 101;
an outer bushing 102, wherein the outer wall of the inner bushing 101 is fixedly connected with the inner wall of the outer bushing 102;
A pipeline joint groove is formed between the outer bushing 102 and the inner bushing 101;
The outer wall of the inner bushing 101 and the inner wall of the outer bushing 102 are provided with inclined annular blocks 109;
a pipe 104 is installed in a pipe joint groove formed by the inner bushing 101 and the outer bushing 102, and the side wall of the pipe 104 is tightly connected with an inclined annular block 109.
As a possible embodiment, a drainage annular cavity 105 is formed between the inner wall of the outer liner 102 and the outer wall of the inner liner 101, a drainage hole 110 is formed on the outer liner 102 at the position of the drainage annular cavity 105, and an air tap 106 is fixedly installed in the drainage hole 110.
As a possible embodiment, the other end of the air tap 106 is connected with a bleeder pipe 107, the other end of the bleeder pipe 107 is fixedly provided with a gas collecting bottle 108, and the bleeder pipe 107 is spirally wound on the outer wall of the outer liner 102.
As a possible embodiment, a protecting cover 103 is further installed at one end of the inner bushing 101, the inner wall of the protecting cover 103 is fixedly connected with the inner bushing 101 and is sealed by a sealing ring, and the protecting cover 103 covers the air tap 106;
When the pipeline 104 is connected with the joint assembly 100, reaming equipment is needed to be used for reaming, the reaming equipment is used for carrying out expansion deformation on the inner hole of the joint assembly 100, under the co-expansion and binding actions of the inner lining 101 and the outer lining 102, after each layer of the pipeline 104 is deformed from the inner material to the outer material, the pipeline 104 and the joint assembly 100 are fully combined, and gaps are filled, so that the sealing connection effect is achieved;
Meanwhile, the inner bushing 101 is provided with two sealing rings which are tightly matched with the inner wall of the pipeline 104 to realize double-line sealing; the joint surface of the end part of the pipeline 104 and the inner bushing 101 is also provided with a sealing ring for blocking;
after the hydrogen is blocked for a plurality of times by each leakage prevention measure, redundant escaping hydrogen enters the leakage annular cavity 105 from the gap, residual recovery is carried out by the leakage annular cavity 105, and finally the residual recovery enters the gas collecting bottle 108 by the gas nipple 106 and the leakage pipe 107, so that the recovery of escaping gas is completed;
The bleeder pipes 107 are arranged by spiral winding along the axis direction of the nonmetallic composite pipeline, and after winding is completed, the bleeder pipes 107 with proper lengths are reserved to ensure that the bleeder pipes can be normally connected with the gas collecting bottle 108; the entire system is then over-coated to protect the bleeder 107 and reduce the occurrence of external blocking damage.
Examples
As shown in fig. 4, this embodiment discloses a hydrogen-transporting pipe, the pipe 104 is sequentially provided with a first PA layer 1041, a first adhesive 1042, an EVOH layer 1043, a second adhesive 1044, and a second PA layer 1045 from inside to outside, and EVOH is a copolymer of ethylene and vinyl alcohol, which is generally used for packaging materials. The material has good barrier property, particularly has strong barrier capability to oxygen, fragrance, solvent, grease and the like, and the PA material is polyamide commonly known as nylon, and is a synthetic fiber formed by polycondensation of dibasic acid and diamine;
the pipeline 104 adopts a high-barrier five-layer coextrusion structure, and the first PA layer 1041, the first adhesive 1042, the EVOH layer 1043, the second adhesive 1044 and the second PA layer 1045 are wrapped with the aluminum pipe with the thickness of 1mm to further separate hydrogen, so that the effect of double barrier is effectively realized.
Claims (2)
1. A leak-proof joint for a hydrogen transfer line, comprising a joint assembly (100), wherein the joint assembly (100) comprises:
An inner liner (101);
The outer wall of the inner bushing (101) is fixedly connected with the inner wall of the outer bushing (102);
a pipeline connecting groove is formed between the outer bushing (102) and the inner bushing (101);
the outer wall of the inner bushing (101) and the inner wall of the outer bushing (102) are provided with inclined annular blocks (109);
A pipeline (104) is arranged in a pipeline connecting groove formed by the inner bushing (101) and the outer bushing (102), and the side wall of the pipeline (104) is tightly connected with an inclined annular block (109);
a drainage annular cavity (105) is formed between the inner wall of the outer bushing (102) and the outer wall of the inner bushing (101), a drainage hole (110) is formed in the outer bushing (102) at the position of the drainage annular cavity (105), and an air tap (106) is fixedly arranged in the drainage hole (110);
The other end of the air tap (106) is connected with a bleeder tube (107), the other end of the bleeder tube (107) is fixedly provided with a gas collecting bottle (108), and the bleeder tube (107) is spirally wound on the outer wall of the outer liner (102);
The inner liner is characterized in that a protective cover (103) is further arranged at one end of the inner liner (101), the inner wall of the protective cover (103) is fixedly connected with the inner liner (101) and is sealed through a sealing ring, and the protective cover (103) covers the air tap (106).
2. The leak-proof joint for hydrogen transfer lines according to claim 1, wherein the pipe (104) comprises, in order from inside to outside, a first PA layer (1041), a first adhesive (1042), an EVOH layer (1043), a second adhesive (1044), and a second PA layer (1045).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311848406.0A CN117483288B (en) | 2023-12-29 | 2023-12-29 | Leak-proof joint for hydrogen-conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311848406.0A CN117483288B (en) | 2023-12-29 | 2023-12-29 | Leak-proof joint for hydrogen-conveying pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117483288A CN117483288A (en) | 2024-02-02 |
| CN117483288B true CN117483288B (en) | 2024-04-16 |
Family
ID=89680434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311848406.0A Active CN117483288B (en) | 2023-12-29 | 2023-12-29 | Leak-proof joint for hydrogen-conveying pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117483288B (en) |
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| CN218340556U (en) * | 2022-10-13 | 2023-01-20 | 无锡高尔德机械制造有限公司 | High accuracy pump body convenient to clearance |
| CN218863551U (en) * | 2022-10-27 | 2023-04-14 | 台州杏诺科技股份有限公司 | F-shaped gas pipe joint |
| CN116494061A (en) * | 2023-06-19 | 2023-07-28 | 苏州上良自动化设备有限公司 | Multi-station rotary cleaning mechanism |
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| IL295282B1 (en) * | 2020-03-10 | 2025-01-01 | Fujikin Kk | Pipe joint |
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