CN201190869Y - Integral insulating joint - Google Patents

Integral insulating joint Download PDF

Info

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
Authority
CN
China
Prior art keywords
insulation
joint
flange
connecting sleeve
insulating
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
Application number
CNU2008200742139U
Other languages
Chinese (zh)
Inventor
陈嘉兴
张学立
金璞
陈毓勃
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhonghai Chenxing Environmental Engrg Sci & Tech Co Tianjin City
Original Assignee
Zhonghai Chenxing Environmental Engrg Sci & Tech Co Tianjin City
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhonghai Chenxing Environmental Engrg Sci & Tech Co Tianjin City filed Critical Zhonghai Chenxing Environmental Engrg Sci & Tech Co Tianjin City
Priority to CNU2008200742139U priority Critical patent/CN201190869Y/en
Application granted granted Critical
Publication of CN201190869Y publication Critical patent/CN201190869Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Thermal Insulation (AREA)

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

The integrated type insulating joint
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.
CNU2008200742139U 2008-03-28 2008-03-28 Integral insulating joint Expired - Fee Related CN201190869Y (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN201190869Y (en) Integral insulating joint
CN203730957U (en) Insulated joint
CN2937706Y (en) Insulation metal valve
CN2128332Y (en) Lined insulation flange
CN209839418U (en) Flange for high-temperature steam pipeline
CN202901610U (en) Insulating dual-phase steel flange group
CN204437540U (en) Integral-type insulating joint
CN203656410U (en) Insulation joint applicable to oil-gas transmission pipeline
CN212564874U (en) Stainless steel multi-way joint
CN202383056U (en) High pressure and corrosion resistance probe installation device
CN112325006A (en) Environment-friendly directly-buried heat preservation pipe convenient to install quickly and using method thereof
CN107314176B (en) A kind of J-type hooks the insulating joint of circle with trapezoidal sealing
CN203730939U (en) Natural gas pipe
CN202901609U (en) High yield strength steel insulating flange set
CN206398226U (en) A kind of New insulated joint
CN206206852U (en) A kind of insulating flange
CN213629297U (en) Environment-friendly direct-buried heat preservation pipe convenient to install rapidly
CN205402023U (en) Integral insulating joint
CN217108797U (en) Polyethylene pipeline for water supply
CN206159682U (en) High pressure flexible hose
CN219659336U (en) Power transmission line pipeline
CN100460735C (en) Insulated metal valve
CN213117815U (en) High-sealing-performance anti-aging plastic pipe
CN216201295U (en) High-pressure rubber pipe assembly
CN209743796U (en) Corrosion-resistant oil and gas pipeline

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