CN204512725U - Resistant to hydrogen steel special flange - Google Patents
Resistant to hydrogen steel special flange Download PDFInfo
- Publication number
- CN204512725U CN204512725U CN201420859723.2U CN201420859723U CN204512725U CN 204512725 U CN204512725 U CN 204512725U CN 201420859723 U CN201420859723 U CN 201420859723U CN 204512725 U CN204512725 U CN 204512725U
- Authority
- CN
- China
- Prior art keywords
- flange
- resistant
- disk
- hydrogen steel
- annular groove
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a kind of resistant to hydrogen steel special flange, it comprises the integrated flange body of resistant to hydrogen steel, the bottom of flange body is disk, the top of flange body is pipe connection portion, disk is distributed with several pilot holes, on the bottom surface of disk and the middle part being positioned at disk is provided with annular groove, the radial cross section of annular groove is semicircle.Resistant to hydrogen steel special flange of the present utility model can realize the sealing of flange under high-temperature and high-pressure conditions, and structure is simple, easy to assembly, effectively can improve efficiency and the precision of assembling.
Description
Technical field
The utility model relates to pipeline connecting device field, is specifically related to a kind of resistant to hydrogen steel special flange.
Background technique
Resistant to hydrogen steel is special special steel, for High Temperature High Pressure such as petrochemical industry, nuclear power, steam turbine cylinder, thermoelectricitys, connects true main equipment with hydrogen or hydrogen mixed medium, and resistant to hydrogen steel special flange is the special flange connected for the pipeline in these fields.The normally integrated cast member of existing resistant to hydrogen steel flange or forge piece, bottom is disk, top is conical or columniform pipe, disk is distributed with multiple pilot hole, flange passes through bolts assemblies, during assembling, mating face needs arrange seal ring, by the mating face of the flange of both sides, sealing is realized to the pressure of seal ring.This flange uses at high temperature under high pressure, and sealing can decline, and therefore, needs to make improvements.
Summary of the invention
When the purpose of this utility model is that the temperature difference that exists for existing resistant to hydrogen steel flange pointed in background technique is larger, sealing declines, and affects the problem that it normally uses, uses the resistant to hydrogen steel special flange of good airproof performance under providing a kind of High Temperature High Pressure.
The technological scheme realizing goal of the invention of the present utility model is as follows:
A kind of resistant to hydrogen steel special flange, it comprises the integrated flange body of resistant to hydrogen steel, the bottom of flange body is disk, the top of flange body is pipe connection portion, disk is distributed with several pilot holes, on the bottom surface of disk and the middle part being positioned at disk is provided with annular groove, the radial cross section of annular groove is semicircle.
Stretch in pipeline for the ease of pipe connection portion, described pipe connection portion is conical tubular, one-body molded with disk bottom it.
End face for the ease of pipeline welds with pipe connection portion, and described pipe connection portion outer wall is provided with protruding circle.
The advantage of resistant to hydrogen steel special flange of the present utility model is: resistant to hydrogen steel special flange of the present utility model is provided with annular groove on the disk bottom surface of flange body, the radial cross section of annular groove is semicircle, during flange assembling, by the semi-cylindrical hill of seal ring both sides respectively correspondence to be contained in annular groove and then by bolt by Flange joint together.Because be provided with annular groove in disk bottom, enhance the combination force of flange and seal ring, be more convenient for seal ring location, when preventing from assembling, seal ring departs from central position and cannot seal simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of resistant to hydrogen steel special flange of the present utility model;
In figure, 1 is flange body, and 11 is disk, and 12 is pipe connection portion, and 2 is pilot hole, and 3 is annular groove, and 4 is protruding circle.
Embodiment
With reference to a kind of resistant to hydrogen steel special flange shown in Fig. 1, it comprises the integrated flange body 1 of resistant to hydrogen steel, the bottom of flange body 1 is disk 11, the top of flange body 1 is pipe connection portion 12, disk 11 is distributed with several pilot holes 2, on the bottom surface of disk 11 and the middle part being positioned at disk 11 is provided with annular groove 3, the radial cross section of annular groove 3 is semicircle.
Stretch in pipeline for the ease of pipe connection portion, described pipe connection portion 12 is conical tubular, one-body molded with disk 11 bottom it.
End face for the ease of pipeline welds with pipe connection portion, and described pipe connection portion 12 outer wall is provided with protruding circle 4.
Resistant to hydrogen steel special flange of the present utility model is provided with annular groove 3 on the disk bottom surface of flange body, the radial cross section of annular groove 3 is semicircle, during flange assembling, by the semi-cylindrical hill of seal ring both sides respectively correspondence to be contained in annular groove 3 and then by bolt by Flange joint together.Because be provided with annular groove 3 bottom disk 11, enhance the combination force of flange and seal ring, be more convenient for seal ring location, when preventing from assembling, seal ring departs from central position and cannot seal simultaneously.Resistant to hydrogen steel special flange of the present utility model can realize the sealing of flange under high-temperature and high-pressure conditions, and structure is simple, easy to assembly, effectively can improve efficiency and the precision of assembling.
Above embodiment is the explanation to embodiment of the present utility model; but not to restriction of the present utility model; person skilled in the relevant technique is not when departing from spirit and scope of the present utility model; can also make various conversion and change and obtain corresponding equivalent technological scheme, therefore all equivalent technological schemes all should be included into scope of patent protection of the present utility model.
Claims (3)
1. a resistant to hydrogen steel special flange, it comprises the integrated flange body of resistant to hydrogen steel, it is characterized in that: the bottom of flange body (1) is disk (11), the top of flange body (11) is pipe connection portion (12), disk (11) is distributed with several pilot holes (2), on the bottom surface of disk (11) and the middle part being positioned at disk (11) is provided with annular groove (3), the radial cross section of annular groove (3) is semicircle.
2. resistant to hydrogen steel special flange according to claim 1, is characterized in that: described pipe connection portion (12) is conical tubular, one-body molded with disk bottom it.
3. resistant to hydrogen steel special flange according to claim 1, is characterized in that: described pipe connection portion (12) outer wall is provided with protruding circle (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420859723.2U CN204512725U (en) | 2014-12-29 | 2014-12-29 | Resistant to hydrogen steel special flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420859723.2U CN204512725U (en) | 2014-12-29 | 2014-12-29 | Resistant to hydrogen steel special flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204512725U true CN204512725U (en) | 2015-07-29 |
Family
ID=53710703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420859723.2U Expired - Fee Related CN204512725U (en) | 2014-12-29 | 2014-12-29 | Resistant to hydrogen steel special flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204512725U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439310A (en) * | 2016-08-30 | 2017-02-22 | 无锡神意环件法兰有限公司 | High-neck stainless steel welding neck flange |
| CN109027471A (en) * | 2018-08-06 | 2018-12-18 | 上海时鉴工程技术有限公司 | A kind of easy centering pressure-proof flange |
-
2014
- 2014-12-29 CN CN201420859723.2U patent/CN204512725U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439310A (en) * | 2016-08-30 | 2017-02-22 | 无锡神意环件法兰有限公司 | High-neck stainless steel welding neck flange |
| CN109027471A (en) * | 2018-08-06 | 2018-12-18 | 上海时鉴工程技术有限公司 | A kind of easy centering pressure-proof flange |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20151229 |
|
| EXPY | Termination of patent right or utility model |