CN2921523Y - High-temperature and high-pressure matched flange connecting structure - Google Patents
High-temperature and high-pressure matched flange connecting structure Download PDFInfo
- Publication number
- CN2921523Y CN2921523Y CN 200620105491 CN200620105491U CN2921523Y CN 2921523 Y CN2921523 Y CN 2921523Y CN 200620105491 CN200620105491 CN 200620105491 CN 200620105491 U CN200620105491 U CN 200620105491U CN 2921523 Y CN2921523 Y CN 2921523Y
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- high temperature
- temperature
- flange
- bolt
- linkage structure
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Abstract
The utility model discloses a high-temperature and high-pressure matched flange connecting structure. The prior structure adopts the ''O'' shape metal ring or gear cushion as a gasket, the high-temperature and high-pressure media is liable to leak from the mid cushion with the integrated rigid cushion patch when the temperature exceeds 450 Celsius system, which may cause a dangerous case. The utility model comprises a left flange, a right flange and a high-temperature bolt and nut used to connect the left flange and the right flange, which is characterized in that spirally wound flexible gasket of high-temperature and high-pressure resistance is arranged between the left flange and the right flange. The spirally wound flexible gasket adopted in the utility model has good airproof effect and avoids the leakage of media from the gasket under high-temperature and high-pressure conditions.
Description
Technical field
The utility model is a kind of linkage structure of High Temperature High Pressure companion flange.
Background technique
High temperature high pressure industries such as power station, chemical industry, metallurgy, China Petrochemical Industry, military project assembling, Aero-Space are in pipeline connects, under≤450 ℃, all use O shape metal ring or dentiform gasket to make pad, the left and right flanges that the High Temperature High Pressure screw bolt and nut will be connected on the pipeline connects, but after temperature surpassed 450 ℃, flange at first was heated expansion, and bolt heats up to relatively lag behind does not also have line to expand, thereby cause the flange tension, the distortion of compressing intermediate washer; After heat progressively passes to bolt from flange, bolt strained elongation, but middle pad can not rebound (because of it is the rigid pad of integral type) after compacted, thus high-temperature high-pressure medium is leaked from middle pad, cause dangerous situation.At present the high-temperature and pressure pipeline 〉=450 ℃ under connects and all adopts welding, but bring dismantle inconvenient and pipeline repeatedly to cut shortening etc. all multifactor, and heat screen and instrumentation can't be installed in pipeline.
The model utility content
Technical problem to be solved in the utility model is to overcome the defective that above-mentioned prior art exists, a kind of linkage structure of High Temperature High Pressure companion flange is provided, make convenient disassembly, avoid medium under High Temperature High Pressure, to leak, guarantee in the pipeline heat screen and instrumentation to be installed.
For this reason, the utility model adopts following technological scheme: the linkage structure of High Temperature High Pressure companion flange, comprise left and right flanges and the high temperature bolt and the nut that are used to be connected both, it is characterized in that being provided with between left and right flanges the wrap style flexible gasket of a high temperature high voltage resistant.
As further technological scheme, described wrap style flexible gasket is plane, and it is entwined mutually by multi-layer high-temperature alloy-layer and Expanded graphite layer, and the outermost surface of pad and innermost layer are the refractory alloy layer, guarantees the intensity of outermost surface and innermost layer.
Temperature when the utility model uses can rise to 850 ℃, and pressure is to 16.0MPa.When temperature rose, left and right two flanges expanded, and the wrap style flexible gasket that is between the two is compressed; By the time bolt is heated when elongating, and the wrap style flexible gasket is counter to expand, and good sealing effect has prevented that medium leaks from pad under the High Temperature High Pressure.
As further technological scheme, the end of left and right flanges joint is provided with radially coolant guiding channel, and coolant guiding channel communicates with the slotted eye that high temperature bolt is installed.Logical cooling water or other cooling medium in coolant guiding channel, the temperature of reduction bolt and flange joint.
As further technological scheme, the end of left and right flanges is provided with the cooling medium chuck, and it communicates with coolant guiding channel, reduces the temperature of flange end.
As further technological scheme, be provided with the high temperature spring sheet that is enclosed within on the bolt between high temperature nut and flange sidewall, be used for the adjustment of sealing.
The utility model is by adopting the wrap style flexible gasket of high temperature high voltage resistant between left and right flanges, have following beneficial effect: the pipeline that is suitable in the High Temperature High Pressure industry connects, convenient disassembly, the good sealing effect of pad, avoided under the High Temperature High Pressure medium to leak, in the pipeline heat screen and instrumentation can be installed from pad.
Below in conjunction with Figure of description and embodiment the utility model is further described.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
The linkage structure of High Temperature High Pressure companion flange as shown in the figure is connected left and right flanges 1,2 with nut 4 by high temperature bolt 3, and the wrap style flexible gasket 5 of a high temperature high voltage resistant is arranged between left and right flanges.Described wrap style flexible gasket 5 is plane, it is entwined mutually by multi-layer high-temperature alloy-layer and Expanded graphite layer, the used refractory alloy of the utility model is GH3044, and the outermost surface of pad and innermost layer are the refractory alloy layer, guarantees the intensity of outermost surface and innermost layer.The end of left and right flanges joint has radially coolant guiding channel 6, and coolant guiding channel 6 communicates with the slotted eye of placing high temperature bolt 3.The end of left and right flanges is provided with cooling medium chuck 7, and it communicates with coolant guiding channel 6.The high temperature spring sheet 8 that is enclosed within on the bolt 3 is arranged between high temperature nut 4 and flange sidewall.Heat screen 9 and surveying instrument 10 are housed in the pipeline.
Protection domain of the present utility model is not limited to the foregoing description.
Claims (5)
1, the linkage structure of High Temperature High Pressure companion flange comprises left and right flanges (1,2) and high temperature bolt that is used to be connected both (3) and nut (4), it is characterized in that being provided with between left and right flanges (1,2) the wrap style flexible gasket (5) of a high temperature high voltage resistant.
2, the linkage structure of High Temperature High Pressure companion flange according to claim 1, it is characterized in that described wrap style flexible gasket (5) is plane, it is entwined mutually by multi-layer high-temperature alloy-layer and Expanded graphite layer, and the outermost surface of pad and innermost layer are the refractory alloy layer.
3, the linkage structure of High Temperature High Pressure companion flange according to claim 1 and 2 is characterized in that the end of left and right flanges joint is provided with radially coolant guiding channel (6), and coolant guiding channel (6) communicates with the slotted eye that high temperature bolt (3) is installed.
4, the linkage structure of High Temperature High Pressure companion flange according to claim 3 is characterized in that the end of left and right flanges is provided with cooling medium chuck (7), and it communicates with coolant guiding channel (6).
5, the linkage structure of High Temperature High Pressure companion flange according to claim 4 is characterized in that being provided with between high temperature nut (4) and flange sidewall the high temperature spring sheet (8) that is enclosed within on the bolt (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620105491 CN2921523Y (en) | 2006-07-10 | 2006-07-10 | High-temperature and high-pressure matched flange connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620105491 CN2921523Y (en) | 2006-07-10 | 2006-07-10 | High-temperature and high-pressure matched flange connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2921523Y true CN2921523Y (en) | 2007-07-11 |
Family
ID=38254002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620105491 Expired - Lifetime CN2921523Y (en) | 2006-07-10 | 2006-07-10 | High-temperature and high-pressure matched flange connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2921523Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102783A (en) * | 2009-12-22 | 2011-06-22 | 株式会社东芝 | Flange fastening section and cooling system of flange fastening section |
| CN104555105A (en) * | 2014-11-27 | 2015-04-29 | 哈尔滨锅炉厂有限责任公司 | Companion flange fixing and packing device and fixing method |
-
2006
- 2006-07-10 CN CN 200620105491 patent/CN2921523Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102783A (en) * | 2009-12-22 | 2011-06-22 | 株式会社东芝 | Flange fastening section and cooling system of flange fastening section |
| CN102102783B (en) * | 2009-12-22 | 2013-10-30 | 株式会社东芝 | Flange fastening section and cooling system of flange fastening section |
| CN104555105A (en) * | 2014-11-27 | 2015-04-29 | 哈尔滨锅炉厂有限责任公司 | Companion flange fixing and packing device and fixing method |
| CN104555105B (en) * | 2014-11-27 | 2017-04-05 | 哈尔滨锅炉厂有限责任公司 | Companion flange fixing and packaging device and fixing meanss |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070711 |
|
| EXPY | Termination of patent right or utility model |