CN2406440Y - Skin-effect heating cable - Google Patents
Skin-effect heating cable Download PDFInfo
- Publication number
- CN2406440Y CN2406440Y CN 99250313 CN99250313U CN2406440Y CN 2406440 Y CN2406440 Y CN 2406440Y CN 99250313 CN99250313 CN 99250313 CN 99250313 U CN99250313 U CN 99250313U CN 2406440 Y CN2406440 Y CN 2406440Y
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- CN
- China
- Prior art keywords
- utility
- wire core
- cable
- protective sleeve
- metal
- 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 skin-effect heating cable which comprises a conducting body wire core 1, an insulating layer 2 and a metal armouring protective sleeve 3. The utility model is characterized in that the wire core 1 is a single wire core; the insulating layer 2 is mineral powder; the metal protective sleeve 3 at the outer layer is a seamless steel tube; the wire core 1 and the protective sleeve 3 are in short-circuit connection by an endpoint. The utility model enables the metal protective sleeve 3 to become a heating body which directly heats media inside and outside a well tube, thereby, the heat efficiency is obviously improved. Insulating materials adopt mineral substances without the problem of aging. The seamless metal outer protective tube improves the cable mechanical properties, such as tensile strength, abrasive resistance, etc. Consequently, the utility model can guarantee that the service life of the cable is prolonged.
Description
The utility model relates to the flexible heating cable of H05B 3/56 class, a kind of heating cable that utilizes kelvin effect.
At present, general oil well heating cable mainly is to utilize the copper core to make resistance both at home and abroad, insulate with organic materials such as poly-tetrafluoros, and skin is made tensile-resistant reinforcing rib with wire.During use, power connection copper core makes three cores have the loop of one's own, and the copper core becomes the resistive element of heating, and the metal of cable outer layer is just done protective ground.The heat of copper core must conduct out by the insulating barrier of organic material, and the heat efficiency is low, and it is aging that organic insulator is produced, and cable reduces useful life.
The design's purpose provides a kind of with copper core and metal armouring sheath formation loop, makes the kelvin effect heating cable of oversheath as heater element.
The design's kelvin effect heating cable comprises conductor thread core 1, insulating barrier 2 and metal armouring sheath 3, it is characterized in that core 1 is the single line core, and insulating barrier 2 is a mineral powders, and outer layer metal sheath 3 is a seamless steel pipe, and 3 short circuits are connected end points with sheath with core 1.
According to the kelvin effect principle of electric current and the ferromagnetic characteristic of low carbon steel pipe, make the metallic jacket of heating cable become heater, directly give well casing inside and outside medium heating, significantly improved the heat efficiency.Insulating material adopts the mineral powders of first machine thing, has not had the problem of aging of organic insulating material, and cable has not been influenced by it can useful life.This product is mainly used in the viscous crude heating to the down-hole, the pumped caliber restriction of the sectional area specification of this cable can not strengthen, and requirement of strength is that copper material was insurmountable in the past, adopts the outer pillar of seamless metal to improve the mechanical performances such as tensile strength, resistance to wear of cable.
Accompanying drawing 1 is the schematic cross-section of kelvin effect heating cable:
Embodiment:
This kelvin effect heating cable comprises conductor thread core 1, insulating barrier 2 and metal armouring sheath 3, it is characterized in that core 1 is copper single line core, insulating barrier 2 is a mineral powders, as magnesium oxide powder, outer layer metal sheath 3 is a seamless steel pipe, preferably adopts the good low carbon steel pipe of ferromagnetic effects; End points will 3 short circuits be connected with the steel pipe sheath with core 1.
Claims (1)
1, a kind of kelvin effect heating cable, comprise conductor thread core (1), insulating barrier (2) and metal armouring sheath (3), it is characterized in that core (1) is the single line core, insulating barrier (2) is a mineral powders, outer layer metal sheath (3) is a seamless steel pipe, and short circuit is connected end points with sheath (3) with core (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99250313 CN2406440Y (en) | 1999-11-15 | 1999-11-15 | Skin-effect heating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99250313 CN2406440Y (en) | 1999-11-15 | 1999-11-15 | Skin-effect heating cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2406440Y true CN2406440Y (en) | 2000-11-15 |
Family
ID=34035070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99250313 Expired - Fee Related CN2406440Y (en) | 1999-11-15 | 1999-11-15 | Skin-effect heating cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2406440Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543292A (en) * | 2012-03-26 | 2012-07-04 | 江苏新远程电缆股份有限公司 | Low-skin-effect extra-high-voltage cross-linked cable |
| CN107892103A (en) * | 2017-11-09 | 2018-04-10 | 中国成达工程有限公司 | The preheating device of large-scale storage tank bottom plate |
| CN108777891A (en) * | 2018-07-03 | 2018-11-09 | 山东华宁电伴热科技有限公司 | A kind of integration kelvin effect heating cable |
| CN109416145A (en) * | 2016-05-10 | 2019-03-01 | 恩文特服务有限责任公司 | The conducting wire of shielding for the tracking heating of high voltage kelvin effect |
| CN111364962A (en) * | 2020-04-01 | 2020-07-03 | 辽宁华孚石油高科技股份有限公司 | Electric heating method and device for enhancing oil production of SAGD well |
-
1999
- 1999-11-15 CN CN 99250313 patent/CN2406440Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543292A (en) * | 2012-03-26 | 2012-07-04 | 江苏新远程电缆股份有限公司 | Low-skin-effect extra-high-voltage cross-linked cable |
| CN109416145A (en) * | 2016-05-10 | 2019-03-01 | 恩文特服务有限责任公司 | The conducting wire of shielding for the tracking heating of high voltage kelvin effect |
| CN107892103A (en) * | 2017-11-09 | 2018-04-10 | 中国成达工程有限公司 | The preheating device of large-scale storage tank bottom plate |
| CN108777891A (en) * | 2018-07-03 | 2018-11-09 | 山东华宁电伴热科技有限公司 | A kind of integration kelvin effect heating cable |
| CN111364962A (en) * | 2020-04-01 | 2020-07-03 | 辽宁华孚石油高科技股份有限公司 | Electric heating method and device for enhancing oil production of SAGD well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |