CN2711496Y - Insulation joint for gas pipeline - Google Patents
Insulation joint for gas pipeline Download PDFInfo
- Publication number
- CN2711496Y CN2711496Y CN 200420028128 CN200420028128U CN2711496Y CN 2711496 Y CN2711496 Y CN 2711496Y CN 200420028128 CN200420028128 CN 200420028128 CN 200420028128 U CN200420028128 U CN 200420028128U CN 2711496 Y CN2711496 Y CN 2711496Y
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- China
- Prior art keywords
- gas pipeline
- utility
- convex tendon
- model
- flange
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- Expired - Fee Related
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Abstract
The utility model discloses an insulation joint for gas pipeline, comprising two butt jointed flanges and a sealing shim. The two side faces of the sealing shim are provided with convex ribs, and the end surfaces of the flanges are provided with flutes corresponding to the convex ribs. The convex ribs are inserted into the flutes, and therefore, the sealing property is more reliable. Since the sealing point of the utility model adopts the flexible structure, the ability of bending load-resistance is improved and the insulation joint for gas pipeline is not influenced when the pipe is depressed.
Description
Technical field
The utility model relates to a kind of gas pipeline insulating joint.
Background technique
Along with the development of combustion gas causes such as China's natural gas, liquefied petroleum gas (LPG), line transportation pressure improves constantly, and originally uses the cast iron tube on underground pipe network or new auxilliary establish pipeline and progressively replaced by steel tube place.Owing to there is free electric charge in the soil, therefore there is potential difference in various degree, therefore between the pipeline of long distance or each section pipes such as underground utility and voltage regulating station, there is not insulating part, steel pipe will be subjected to serious electrochemical corrosion phenomenon, and reduce working life greatly.Therefore and exist important potential safety hazard, each is intersegmental at the gas steel pipeline pipeline, must configuration insulation tube joint between buried pipeline and voltage regulating station; each that makes the gas transmission and distribution pipeline is intersegmental; isolate mutually between combustion gas voltage regulating station and transmission ﹠ distribution pipeline, protect it not to be subjected to electrochemical corrosion, guarantee its safe handling.
External product and domestic other produced the insulating joint that family produces in the past, in use, often had the external leakage phenomenon to produce.After main cause is insulating joint and steel pipe welding, the long line steel pipe effect of being expanded with heat and contract with cold, the stretching insulating joint reduces the suffered compressive force of the Sealing that compressed originally, and seal pressure is not enough, produces the external leakage phenomenon, perhaps produces seal failure because of pipe sedimentation.
Summary of the invention
The purpose of this utility model is: a kind of gas pipeline insulating joint is provided, and unaffected when its good seal performance, counter-bending load-carrying ability height, pipe sedimentation, and can strengthen to resist and wear voltage.
The technical solution of the utility model is: a kind of gas pipeline insulating joint, include the flange and the gasket seal of two butt joints, the bi-side of described gasket seal all are provided with a circle convex tendon at least, and the end face of flange is provided with and the convex tendon corresponding groove, and convex tendon embeds in the groove.
The further technological scheme of the utility model is: a kind of gas pipeline insulating joint, include the flange and the gasket seal of two butt joints, the bi-side of described gasket seal are equipped with two circle convex tendons, and the end face of flange is provided with two and convex tendon corresponding groove, and convex tendon embeds in the groove.
The utility model has the advantages that:
1. because gasket seal both side surface of the present utility model all is provided with two circle convex tendons, the end face of flange is provided with and the convex tendon corresponding groove, so sealability is more reliable.
2. because the utility model sealing part adopts flexible structure, improve the ability of its counter-bending load, and unaffected during pipe sedimentation.
Description of drawings
The utility model will be further described below in conjunction with drawings and Examples:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the stereogram of flange;
Fig. 3 is the stereogram of gasket seal.
Wherein: 1 flange; 2 gasket seals; 3 convex tendons; 4 grooves.
Embodiment
Embodiment: as Fig. 1, Fig. 2, shown in Figure 3, a kind of gas pipeline insulating joint, include the flange (1) and the gasket seal (2) of two butt joints, the bi-side of described gasket seal (2) are equipped with two circle convex tendons (3), the end face of flange (1) is provided with two and convex tendon (3) respective slot (4), and convex tendon (3) embeds in the groove (4).
Because gasket seal of the present utility model (2) bi-side are equipped with two circle convex tendons (3), the end face of flange (1) is provided with two and convex tendon (3) corresponding groove (4), convex tendon (3) embeds in the groove (4), therefore its sealability is more reliable, and because the utility model sealing part adopts flexible structure, improve the ability of its counter-bending load, and unaffected during pipe sedimentation.
Claims (2)
1. gas pipeline insulating joint, include the flange (1) and the gasket seal (2) of two butt joints, it is characterized in that: the bi-side of described gasket seal (2) all are provided with a circle convex tendon (3) at least, the end face of flange (1) is provided with and convex tendon (3) corresponding groove (4), and convex tendon (3) embeds in the groove (4).
2. gas pipeline insulating joint according to claim 1 is characterized in that: the bi-side of described gasket seal (2) are equipped with two circle convex tendons (3), and corresponding groove (4) also is provided with two, and convex tendon (3) embeds in the groove (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420028128 CN2711496Y (en) | 2004-06-17 | 2004-06-17 | Insulation joint for gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420028128 CN2711496Y (en) | 2004-06-17 | 2004-06-17 | Insulation joint for gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2711496Y true CN2711496Y (en) | 2005-07-20 |
Family
ID=36192600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420028128 Expired - Fee Related CN2711496Y (en) | 2004-06-17 | 2004-06-17 | Insulation joint for gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2711496Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346281B (en) * | 2005-12-23 | 2011-03-16 | 空客西班牙公司 | Current insulation apparatus used for fuel system |
| CN103438306A (en) * | 2013-08-23 | 2013-12-11 | 中国航天科技集团公司第六研究院第十一研究所 | Sealing device of electric heat transfer test pipe fitting |
| CN105114727A (en) * | 2015-09-13 | 2015-12-02 | 苏州市燃气设备阀门制造有限公司 | Insulating, truncating and subsidence compensation device for household gas pipe |
| CN105351651A (en) * | 2015-12-04 | 2016-02-24 | 湖北恒通石化设备有限公司 | Ultrahigh pressure insulating joint |
| CN107131367A (en) * | 2017-06-28 | 2017-09-05 | 贵州航天智慧农业有限公司 | A kind of anti-dropout flange rubber gasket and its application method |
| CN110864173A (en) * | 2019-11-01 | 2020-03-06 | 上海誉亿建筑安装工程有限公司 | Natural gas conveying pipeline joint structure and construction process thereof |
-
2004
- 2004-06-17 CN CN 200420028128 patent/CN2711496Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346281B (en) * | 2005-12-23 | 2011-03-16 | 空客西班牙公司 | Current insulation apparatus used for fuel system |
| CN103438306A (en) * | 2013-08-23 | 2013-12-11 | 中国航天科技集团公司第六研究院第十一研究所 | Sealing device of electric heat transfer test pipe fitting |
| CN103438306B (en) * | 2013-08-23 | 2016-08-24 | 中国航天科技集团公司第六研究院第十一研究所 | A kind of sealing device of fax heat test pipe fitting |
| CN105114727A (en) * | 2015-09-13 | 2015-12-02 | 苏州市燃气设备阀门制造有限公司 | Insulating, truncating and subsidence compensation device for household gas pipe |
| CN105351651A (en) * | 2015-12-04 | 2016-02-24 | 湖北恒通石化设备有限公司 | Ultrahigh pressure insulating joint |
| CN107131367A (en) * | 2017-06-28 | 2017-09-05 | 贵州航天智慧农业有限公司 | A kind of anti-dropout flange rubber gasket and its application method |
| CN110864173A (en) * | 2019-11-01 | 2020-03-06 | 上海誉亿建筑安装工程有限公司 | Natural gas conveying pipeline joint structure and construction process thereof |
| CN110864173B (en) * | 2019-11-01 | 2021-04-27 | 上海誉亿建筑安装工程有限公司 | Natural gas conveying pipeline joint structure and construction process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050720 Termination date: 20100617 |