CN201190869Y - Integral insulating joint - Google Patents
Integral insulating joint Download PDFInfo
- Publication number
- CN201190869Y CN201190869Y CNU2008200742139U CN200820074213U CN201190869Y CN 201190869 Y CN201190869 Y CN 201190869Y CN U2008200742139 U CNU2008200742139 U CN U2008200742139U CN 200820074213 U CN200820074213 U CN 200820074213U CN 201190869 Y CN201190869 Y CN 201190869Y
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- Prior art keywords
- insulation
- joint
- flange
- connecting sleeve
- insulating
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Abstract
The utility model discloses an electric insulator for metal pipes, in particular to an integral insulation joint, wherein a left flange and a right flange are respectively welded with a short pipe, the left and the right flanges are distanced by a non-asbestos compression plate and insulation liner board, two outers surfaces of the right flange contacted with a connecting sleeve are provided with non-asbestos compression plates, insulation liner boards and insulation stuff, the short pipe and the connecting sleeve are stuffed with insulation stuff therebetween, the left flange is welded with the connecting sleeve, the connecting sleeve 6 and the short pipe 3 are provided with insulation stuff 7 therebtweeen and sealed by resins, the surface of each non-asbestos compression plate contacted with the insulation liner board is provided with a plurality of annular slots. The utility model adopts a reliable insulation sealing structure to improve the advantages of the insulation joint in the application of high temperature high pressure medium system, which can work in the oil pipelines, chemical pipelines and high pressure steam pipelines of high temperature and high pressure for long time.
Description
Technical field
The utility model relates to a kind of electrical insulation equipment that is used for metallic conduit.
Background technique
Conveyance conduits such as the oil of buried metal matter, gas, water, steam are impaired because of the corrosion in soil, and its result has not only reduced the life-span, and even more serious is will be accidents caused.When pipeline installation, except that on pipeline, doing the protective coating protection, also taked cathodic protection, thereby can effectively prevent and control corrosion for this reason based on electrochemical principle.The relevant rule and standard of China are clearly stipulated pipeline cathode protection: " pipeline should be established seal, the cathodic protection system separate to form, that system is unified." electrical insulation of pipes in past mainly realizes by insulated flange.Short and need to take up an area of reason such as building flange well because of its poor reliability, service life, replaced by the non-maintaining insulating joint that can directly bury ground of integrated type.But its insulation and sealing structure of existing insulating joint is made up of epoxy resins insulation plate and nitrile rubber or fluorine rubber usually, thereby operating temperature, pressure are not high, usually operating temperature is at the withstand voltage 10Mpa that is no more than below 70 ℃, thereby limited the application of insulating joint.
So just need a kind of i.e. insulation can satisfy the device of the various medium requirements of line transportation again.In view of the above, the utility model proposes a kind of new electrical insulation equipment that is exclusively used in metallic conduit, make the problems referred to above obtain desirable solution.
Summary of the invention
The utility model provides a kind of integrated type insulating joint.Both had general insulating joint integrated type, non-maintaining, can directly bury advantage such as ground, simultaneously because of adopting novel insulation and sealing structure, thereby operating temperature and pressure are very high.Expanded the application of insulating joint greatly.
Below in conjunction with accompanying drawing structural principle of the present utility model is described.The integrated insulating joint has: flange, short tube, compressed board, insulating lining, joint sleeve, insulating packing etc.Concrete structure is: left side flange 1 and right side flange 2 weld together with short tube 3 respectively.Separate by no asbestos compressed board 4 and insulating lining 5 between left side flange 1 and the right side flange 2; Right side flange 2 is equipped with no asbestos compressed board 4, insulating lining 5 and insulation filling material 7 with joint sleeve 6 contacted two outer side surfaces; Also be equipped with insulation filling material 7 between short tube 3 and the joint sleeve 6, guaranteed axial and radially insulation and sealing between the flange.Left side flange 1 and joint sleeve 6 welding.Insulation filling material 7 is set between joint sleeve 6 and the short tube 3 and uses the resin shutoff.
No asbestos compressed board 4 and the one side that insulating lining 5 contacts are processed with several annular concave grooves.The material of insulating lining 5 is polyimide (PI).
Characteristics of the present utility model and beneficial effect are embodied in, owing to adopted reliable insulation and sealing structure, make this insulating joint when being applied to the high-temperature high-pressure medium system, have shown its superiority.But long-term work is in oil well head pipeline, chemical process pipeline and the high pressure steam line etc. of High Temperature High Pressure.
Description of drawings
Accompanying drawing is the utility model structural drawing (the black triangle shown in the figure is represented welding).
Embodiment
Assembling mode of the present utility model is (with reference to an accompanying drawing): at first left side flange 1 and right side flange 2 are welded together with short tube 3 respectively, when insulating joint uses short tube and main are welded as a whole.And then fill no asbestos compressed board and insulating lining between the flange of the left and right sides; Also place insulation filling material 7 between right side flange 2 and joint sleeve 6 contacted two sides and short tube 3 and the joint sleeve 6, reached the insulation purpose.Then left side flange 1 and joint sleeve 6 are welded together.Fill in the 7 back resin shutoff of insulation filling material between joint sleeve 6 and the short tube 3.It is the insulated enclosure material that present embodiment adopts polyimide (PI) insulating lining and no asbestos compressed board, and its heat decomposition temperature is more than 600 ℃, and low temperature can anti--269 ℃ of liquid heliums and can embrittlement.Its mechanical property tensile breaking strength is up to more than the 100Mp after tested; fibrous PI Young's modulus is only second to carbon fiber up to 500GP; surface resistivity can reach 1014 Ω, and volume resistivity can reach 1016 Ω/cm, satisfies cathodic protection electrical insulation of pipes standard (SY/T0086-2003).Adopt the insulating joint working pressure of this structure can reach 40Mpa, can the 3KV of anti-50Hz alternating voltage, can long-term work under 200 ℃ high temperature.
The key technical indexes of the present utility model after tested is:
1. insulation resistance: through 2500V megohmmeter test two ends resistance greater than 5M Ω;
2. anti-ac breakdown voltage: greater than 50Hz 3KV;
3. working pressure: 40Mpa;
4. operating temperature :-40～200 ℃;
5. mechanical property: bear moment of flexure can with the pipeline equal strength;
6. projected life: identical working life with pipeline;
7. working method: directly bury ground, non-maintaining.
Claims (2)
1. integrated type insulating joint, has flange, short tube, compressed board, insulating lining, joint sleeve, insulating packing, it is characterized in that left side flange (1) and right side flange (2) weld together with short tube (3) respectively, separate by no asbestos compressed board (4) and insulating lining (5) between left side flange (1) and the right side flange (2), right side flange (2) is equipped with no asbestos compressed board (4) with contacted two sides of joint sleeve (6), insulating lining (5) and insulation filling material (7), also be equipped with insulation filling material (7) between short tube (3) and the joint sleeve (6), left side flange (1) and joint sleeve (6) welding are provided with insulation filling material (7) and use the resin shutoff between joint sleeve (6) and the short tube (3).
2. according to the described integrated type insulating joint of claim 1, it is characterized in that described no asbestos compressed board (4) and the one side that insulating lining (5) contacts, be processed with several annular concave grooves, the material of described insulating lining (5) is a polyimide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200742139U CN201190869Y (en) | 2008-03-28 | 2008-03-28 | Integral insulating joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200742139U CN201190869Y (en) | 2008-03-28 | 2008-03-28 | Integral insulating joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201190869Y true CN201190869Y (en) | 2009-02-04 |
Family
ID=40335031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200742139U Expired - Fee Related CN201190869Y (en) | 2008-03-28 | 2008-03-28 | Integral insulating joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201190869Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178667A (en) * | 2017-06-05 | 2017-09-19 | 中国工程物理研究院材料研究所 | A kind of metal tube insulation sealing device and metal tube insulation encapsulating method |
-
2008
- 2008-03-28 CN CNU2008200742139U patent/CN201190869Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178667A (en) * | 2017-06-05 | 2017-09-19 | 中国工程物理研究院材料研究所 | A kind of metal tube insulation sealing device and metal tube insulation encapsulating method |
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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: 20090204 Termination date: 20120328 |