CN2388796Y - Single-phase coaxial eddy heating armored heating cable - Google Patents
Single-phase coaxial eddy heating armored heating cable Download PDFInfo
- Publication number
- CN2388796Y CN2388796Y CN 99216344 CN99216344U CN2388796Y CN 2388796 Y CN2388796 Y CN 2388796Y CN 99216344 CN99216344 CN 99216344 CN 99216344 U CN99216344 U CN 99216344U CN 2388796 Y CN2388796 Y CN 2388796Y
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- cable
- heating
- eddy
- layer
- iron sheet
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Abstract
The utility model relates to a single-phase coaxial eddy heating armored heating cable. The inner core wires of the single-phase coaxial eddy heating armored heating cable are copper wires, and then an insulating waterproof oil-resisting layer, an eddy heating iron sheet sleeve, a copper belt wrapping layer and a steel belt armored protective layer are arranged in the cable in order form inside to outside; all metal parts at the tail end of the cable are pressed and connected together, and core wires at the head end of the cable is connected with a fire wire; other metal layers are respectively connected with each other to be used as a ground wire, and a single-phase alternative current power supply is switched to form a cable heating device. When current flow flows through the core wires, the iron sheet sleeve generates eddy under the action of alternating magnetic field to heat, and then the heat is conveyed to crude oil in an oil delivery pipe.
Description
The utility model relates to interior heating cable of oil pumper hollow rod and the interior heating cable of petroleum pipeline in the oil well, particularly, is meant and establishes single-phase coaxial eddy-current heating armouring heating cable in a kind of hollow rod and the oil pipe.
Countries in the world all take much count of the exploitation of oil, the secondary oil recovery pumping production, height is thick, height is sticking, height contains cured, low temperature condition generation but have in a part of oil well, this crude oil is not easy to extract out, in order to improve the efficient of oil pumper, increases oil production rate, the way that has is to establish heating cable in hollow rod, mix heat in order to improve the oil temperature for the measuring station oil transportation with steam, fork-like farm tool used in ancient China is exploited the oil under three high one low certain situations like this, and the heating cable that uses is the internal resistance heating cable at present.
The basic structure of this cable is: inside is to be surrounded by the anti-profit heatproof sealant of insulation, outermost layer braided steel wire overcoat on three copper cores, every heart yearn, and the heating principle of this cable is to lean on the D.C. resistance of heart yearn to generate heat, conduct heat by insulating barrier and conduct heat to crude oil to hollow rod by alternating current.Square being directly proportional of electric current multiply by in the heat that sends and internal resistance, so this cable is internal resistance heating armouring heating cable, it has two shortcomings: conduct heat by insulating barrier in first heart yearn heating back, make insulating barrier aging easily, cable life reduction, second requires high temperature resistant senior again insulating material, and cost is very high.
The purpose of this utility model is to provide in a kind of hollow rod or the wide model of purposes in the petroleum pipeline, simple and reliable, the life-span is long, cost is low, easy to use single-phase coaxial eddy-current heating armouring heating cable, on the basis of common cable commonly used, done the basic improvement on the structural heating principle, made it improve heating efficiency, alleviate the most of heat transfer burden of insulation, strengthen mechanical strength, improve resistance to wear, self constitutes the loop, cuts the fault that connections such as latch, screw, soldering tip cause.
The purpose of this utility model is achieved in that
A kind of single-phase coaxial eddy-current heating armouring heating cable: this cable internal core is copper cash, secondly is that insulative water-proof oil resistant layer, eddy-current heating iron sheet cover, copper strips hold layer, ragged edge is a steel band armor protective layer; all metal part dividing potential drops of cable tail end are connected together; the head end heart yearn line of starting to exchange fire; other metal level links together separately and is ground wire, connects single phase alternating current power supply and has just constituted the cable heater.When heart yearn flow through electric current, iron sheet was enclosed within and must produces eddy current under the action of alternating magnetic field and generate heat, pass to crude oil in the petroleum pipeline.Being characterised in that has increased eddy-current heating iron sheet cover and copper strips holds layer outside cable insulation, eddy-current heating iron sheet cover, copper strips hold layer, steel band armor protective layer, and the three-layer metal layer is coaxial and parallel and require to pack tightly and also will contact well.
The utility model has following positive beneficial effect: 1, the utility model cable is because increased eddy-current heating iron sheet cover outside the core insulation layer, when heart yearn passes through alternating current, space around the heart yearn will form alternating magnetic field, this action of alternating magnetic field puts at this iron sheet, it is closed voluntarily in conductor just to produce induced current, therefore be its eddy current, the a large amount of heat of the iron sheet cover big generation of the little eddy current of internal resistance, give heating crude oil by the good metal-coating layer of heat conduction, it is good because so eddy-current heating does not pass through the insulating barrier heats, alleviated the heat transfer burden of insulating barrier greatly, delayed the aging progress of insulating barrier, improved cable useful life, insulating material can downgrade, and reduces cost.2, the utility model cable insulation has the three-layer metal layer outward, improved greatly anti-ly draw, wear-resisting mechanical strength, increased security reliability.3, cable has the conductive copper cortex himself to connect and compose the closed-loop path because of coaxial, has cut the fault that latch, screw, soldering tip etc. cause because of loose contact.
Now in conjunction with the accompanying drawings the utility model is described in further detail as follows with preferred embodiment:
Fig. 1, be the utility model construction of cable cross-sectional view:
Figure number is: 1, multiply copper stranded conductor: 25mm
22, insulating barrier: polypropylene or poly-four
Thick 1.5-2.5mm 3. glass wool cloths of fluoroplastics: the thick 4. waterproof oil resistant insulatings of 0.5mm
Sealant: alkene, poly-tetrafluoro or acrylonitrile-butadiene rubber in poly-: 1.5-2.5mm is thick
5. thick 6. copper strips of eddy-current heating iron sheet cover: 0.5-1.0mm hold layer: 20mm
2
7. steel band armor protective layer: apply this cable maximum cable external diameter in the wrapped overlap joint hollow rod of 0.5 thick galvanized steel strip less than 18mm
See also the single-phase coaxial eddy-current heating armouring heating cable of Fig. 1 the utility model; the nuclear core of this cable has the outside of a main heart yearn 1, main heart yearn to be wrapped with insulating barrier 2, glass wool cloth lining 3, waterproof oil resistant insulating sealant 4, eddy-current heating iron sheet cover 5 successively, copper strips holds layer 6, steel band armor protective layer 7, it is characterized in that: be wrapped with eddy-current heating iron sheet cover 5 and copper strips and hold layer 6 on insulated enclosure layer 4.
In preferred embodiment, on common single-core power cables insulating barrier, increased iron sheet cover 5, when main heart yearn 1 passes through alternating current, space around the heart yearn 1 will form alternating magnetic field, this action of alternating magnetic field is on iron sheet cover 5, because of iron sheet cover 5 is that good magnetic conductor is again an electric conductor, its enclose inside resistance is very little, can produce bigger eddy current, produce heat, by other two metal levels 6.7, pass to the crude oil in the oil pipe.
According to Ohm's law, Biot's sand cuts down law as can be known, the size of magnetic conductor induced currents is directly proportional with variation rate of magnetic flux, so eddy current is directly proportional with the frequency of alternating current in the iron sheet cover, the heat that is the eddy current generation is relevant with the frequency of alternating current, therefore, in the utility model if will improve the heat of heating cable output, can reach by the frequency that improves power supply, and original cable has only the electric current that passes through in the increase heart yearn 1 if will increase caloric value, the big more cable insulation of alternating current is easy more aging, therefore the life-span of the present utility model increases greatly, because of having alleviated cable insulation 2 greatly, 4 heat transfer burden.
Increase purpose that copper strips holds layer 6 and be and make cable have the sealing galvanic circle of one's own, reduce and take up room, simplify the cables manufacturing ordering, strengthen cable protection, and generate heat, reduce the fault that joint, latch etc. cause because of loose contact simultaneously.
The utility model cable has three-layer metal layer 5,6,7 fork-like farm tool used in ancient China protections insulating barrier 2,4, improved greatly anti-ly draw, anti-mechanical strength and security reliability of bumping mill, make cable life that very big prolongation be arranged.
Claims (3)
1. single-phase coaxial eddy-current heating armouring heating cable: this cable internal core is copper cash, secondly is that insulative water-proof oil resistant layer, eddy-current heating iron sheet cover, copper strips hold layer, ragged edge is a steel band armor protective layer, it is characterized in that: increased eddy-current heating iron sheet cover and copper strips and hold layer outside cable insulation.
2, cable according to claim 1 is characterized in that: eddy-current heating iron sheet cover, copper strips hold layer, outermost layer is a steel band armor protective layer.
3, cable according to claim 1 is characterized in that: eddy-current heating iron sheet cover, copper strips hold layer, steel band armor protective layer, the three-layer metal layer coaxial and parallel and also require to pack tightly also to contact good.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99216344 CN2388796Y (en) | 1999-07-06 | 1999-07-06 | Single-phase coaxial eddy heating armored heating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99216344 CN2388796Y (en) | 1999-07-06 | 1999-07-06 | Single-phase coaxial eddy heating armored heating cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2388796Y true CN2388796Y (en) | 2000-07-19 |
Family
ID=34008020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99216344 Expired - Fee Related CN2388796Y (en) | 1999-07-06 | 1999-07-06 | Single-phase coaxial eddy heating armored heating cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2388796Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235711B (en) * | 2007-01-31 | 2011-06-01 | 辽宁华孚石油高科技股份有限公司 | Hollow sucker rod electric heater unit |
| CN107100588A (en) * | 2017-07-10 | 2017-08-29 | 东营市凌通石油机械制业有限责任公司 | Reducing thick oil viscosity heater and reducing thick oil viscosity heating system |
| CN108566694A (en) * | 2017-12-08 | 2018-09-21 | 唯真（廊坊）石油科技股份有限公司 | A kind of client cables |
-
1999
- 1999-07-06 CN CN 99216344 patent/CN2388796Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235711B (en) * | 2007-01-31 | 2011-06-01 | 辽宁华孚石油高科技股份有限公司 | Hollow sucker rod electric heater unit |
| CN107100588A (en) * | 2017-07-10 | 2017-08-29 | 东营市凌通石油机械制业有限责任公司 | Reducing thick oil viscosity heater and reducing thick oil viscosity heating system |
| CN108566694A (en) * | 2017-12-08 | 2018-09-21 | 唯真（廊坊）石油科技股份有限公司 | A kind of client cables |
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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 |