CN217382074U - Hydrogen flange sealing device - Google Patents
Hydrogen flange sealing device Download PDFInfo
- Publication number
- CN217382074U CN217382074U CN202220846139.8U CN202220846139U CN217382074U CN 217382074 U CN217382074 U CN 217382074U CN 202220846139 U CN202220846139 U CN 202220846139U CN 217382074 U CN217382074 U CN 217382074U
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- Prior art keywords
- flange
- hydrogen
- sealing ring
- valve group
- threaded hole
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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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Abstract
The utility model relates to the technical field of hydrogen gas transmission and distribution, in particular to a hydrogen gas flange sealing device, which comprises a winding gasket arranged between two flanges, a fastening piece for fastening the flanges and a sealing ring, wherein the sealing ring is welded at the gap between the two flanges of the fastened flanges; a first threaded hole and a second threaded hole are formed in the sealing ring; the first threaded hole is connected with a pressure gauge partition valve group, and the other end of the pressure gauge partition valve group is connected with a pressure gauge; the second threaded hole is connected with a hydrogen diffusion valve group, and the other end of the hydrogen diffusion valve group is connected with a hydrogen diffusion pipe. The device adopts the form of a sealing ring to seal the fastened flange, so that the field workload is greatly reduced; even under the condition that the flange has trace leakage, the hydrogen gas transmission and distribution system can also run safely, and the shutdown caused by trace leakage of the flange is avoided, so that the economic loss caused by shutdown can be reduced.
Description
Technical Field
The utility model relates to a hydrogen transmission and distribution technical field especially relates to a hydrogen flange sealing device.
Background
At present, hydrogen energy is not only applied to the fields of aerospace, automobiles and the like, but also applied to the fields of distributed power generation, emergency power supply, hydrogen-blended natural gas power generation and the like. Three major heavy gas turbine main engines around the world are prepared to market pure hydrogen gas turbines, a hydrogen gas transmission and distribution system is complete and matched at the same time, a welding form is generally recommended for a hydrogen gas transmission pipeline, but if all pipelines between modules adopt the welding form, huge workload of welding, nondestructive testing and pickling passivation can be brought to the site; the problems can be solved by adopting flange connection, but because hydrogen molecules are very small, the flange connection is easy to leak, and shutdown maintenance is needed after the leakage, so that great economic loss is brought. Therefore, the problem of flange leakage can be solved by an urgently needed device, and then the hydrogen gas transmission and distribution system is perfected.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a hydrogen flange sealing device, the technical scheme of its adoption is:
a hydrogen flange sealing device comprises a winding gasket arranged between two flanges of a flange, a fastening piece for fastening the flange and a sealing ring, wherein the sealing ring is welded at the gap between the two flanges of the fastened flange; a first threaded hole and a second threaded hole are formed in the sealing ring; the first threaded hole is connected with a pressure gauge partition valve group, and the other end of the pressure gauge partition valve group is connected with a pressure gauge; and the second threaded hole is connected with a hydrogen diffusion valve group, and the other end of the hydrogen diffusion valve group is connected with a hydrogen diffusion pipe.
Further, the sealing ring is welded according to the height of the welding leg, and the height is 2 mm.
Compared with the prior art, the beneficial effects of the utility model are that:
the hydrogen flange sealing device disclosed by the utility model adopts the sealing ring form to seal the fastened flange, thereby greatly reducing the field workload; even under the condition that the flange has trace leakage, the hydrogen gas transmission and distribution system can also run safely, and the shutdown caused by trace leakage of the flange is avoided, so that the economic loss caused by shutdown can be reduced.
Drawings
FIG. 1 is a longitudinal sectional view of the structure of the present invention;
FIG. 2 is a schematic view of the connection among the pressure gauge partition valve set, the pressure gauge, the hydrogen diffusion valve set and the sealing ring;
in the figure: 1. a seal ring; 2. a pressure gauge partition valve group; 3. a pressure gauge; 4. a fastener; 5. a flange; 6. winding the gasket; 7. welding feet; 8. a hydrogen bleeding valve set; 9. a first threaded hole; 10. a second threaded hole; A. a first welding point; B. a second weld point.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in FIG. 1, the utility model discloses a hydrogen flange sealing device for use between each module and pipeline in hydrogen distribution system. Assembling a flange assembly on site, placing a winding gasket 6 between two flanges of a flange 5, fastening by using a fastening piece 4, carrying out a system air tightness test on the flange assembly, welding a sealing ring 1 at the gap between the two flanges of the flange 5 according to the height seal of a welding leg 7 after the flange assembly is qualified, wherein the height of the welding leg used in a common hydrogen gas transmission and distribution system is 2 mm. The method for welding the seal ring 1 is as follows: firstly, a half of the sealing ring 1 is welded at the gap between two flanges of the flange 5, then the other half of the sealing ring 1 is welded, and after the sealing ring 1 and the flange 5 are welded, the two half sealing rings 1 are welded together according to a first welding point A and a second welding point B shown in figure 2. After the sealing ring 1 is welded, the pressure gauge partition valve group 2 is connected with a first threaded hole 9 on the sealing ring 1, and the other end of the pressure gauge partition valve group 2 is connected with the pressure gauge 3. The hydrogen diffusion valve group 8 is connected with a second threaded hole 10 on the sealing ring 1, and the other end of the hydrogen diffusion valve group 8 is connected with a hydrogen diffusion pipe.
Open the manometer after the installation and cut off valves 2, close hydrogen and diffuse valves 8, the utility model discloses formally put into operation. After the hydrogen is filled into the system to formally operate, whether the reading of the pressure gauge 3 changes or not is observed, if the pressure continuously rises, the flange 5 is proved to be connected with trace leakage, the hydrogen diffusion valve group 8 is opened at the moment, the trace leakage hydrogen of the flange 5 is discharged through the hydrogen diffusion pipe, and the leakage point is processed when the system is stopped for maintenance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A hydrogen flange sealing device, includes the winding gasket (6) of arranging between two flanges of flange (5) and fastener (4) of fastening flange (5), its characterized in that: the sealing ring (1) is welded at the gap between two flanges of the fastened flange (5); a first threaded hole (9) and a second threaded hole (10) are formed in the sealing ring (1); the first threaded hole (9) is connected with a pressure gauge partition valve group (2), and the other end of the pressure gauge partition valve group (2) is connected with a pressure gauge (3); the second threaded hole (10) is connected with a hydrogen diffusion valve group (8), and the other end of the hydrogen diffusion valve group (8) is connected with a hydrogen diffusion pipe.
2. A hydrogen flange seal assembly according to claim 1 wherein: the sealing ring (1) is welded according to the height of the welding leg (7), and the height is 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220846139.8U CN217382074U (en) | 2022-04-13 | 2022-04-13 | Hydrogen flange sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220846139.8U CN217382074U (en) | 2022-04-13 | 2022-04-13 | Hydrogen flange sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217382074U true CN217382074U (en) | 2022-09-06 |
Family
ID=83108078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220846139.8U Active CN217382074U (en) | 2022-04-13 | 2022-04-13 | Hydrogen flange sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217382074U (en) |
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2022
- 2022-04-13 CN CN202220846139.8U patent/CN217382074U/en active Active
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