CN217444086U - Magnesium oxide mineral insulation rigid heating special cable - Google Patents
Magnesium oxide mineral insulation rigid heating special cable Download PDFInfo
- Publication number
- CN217444086U CN217444086U CN202220905664.2U CN202220905664U CN217444086U CN 217444086 U CN217444086 U CN 217444086U CN 202220905664 U CN202220905664 U CN 202220905664U CN 217444086 U CN217444086 U CN 217444086U
- Authority
- CN
- China
- Prior art keywords
- magnesium oxide
- oxide mineral
- cable
- layer
- insulating layer
- 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.)
- Active
Links
Images
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a magnesium oxide mineral insulation rigid heating special type cable, including solid conductor, magnesium oxide mineral insulating layer, magnetism steel tape layer and FEP sheath, magnesium oxide mineral insulating layer parcel is in on the solid conductor, magnesium oxide mineral insulating layer's periphery is provided with magnetism steel tape layer, the periphery cladding of magnetism steel tape layer has the FEP sheath. The utility model has the advantages of simple structure, better corrosion resistance and heat resistance, and small cable brittleness; when the electric heating device is electrified, the conductor and the magnetic steel belt layer generate a strong eddy current effect, so that the magnetic steel belt layer generates heat, the oil pumping well pipe is heated and warmed, the oil pumping efficiency is ensured, the effect is particularly obvious in cold winter, and the electric heating device is particularly suitable for heating operation of the oil pumping well pipe of the oil well.
Description
Technical Field
The utility model relates to a special type cable field especially relates to a magnesium oxide mineral insulation rigid heating special type cable.
Background
The crude petroleum oil is very viscous, and the flow rate of the crude oil is slower when the crude oil is pumped in the well along with the reduction of the environmental temperature, so that the pumping efficiency and the crude oil yield of each well are greatly influenced. At present, most oil wells adopt no measures naturally. How to develop a mineral insulated rigid heating special cable, so that heat generated by the heating cable is transferred into an oil pipe, thereby solving the problems of unsmooth oil pumping, low flow rate, low yield and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a magnesium oxide mineral insulation rigid heating special cable solves the problem that the oil pumping is not smooth, the velocity of flow is low.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model relates to a magnesium oxide mineral insulation rigidity heating special type cable, including solid conductor, magnesium oxide mineral insulating layer, magnetism steel tape layer and FEP sheath, magnesium oxide mineral insulating layer parcel is in on the solid conductor, magnesium oxide mineral insulating layer's periphery is provided with magnetism steel tape layer, the periphery cladding of magnetism steel tape layer has the FEP sheath.
Furthermore, the solid conductor is a single solid copper wire.
Furthermore, the magnesium oxide mineral insulating layer is formed by heating and calcining compacted magnesium oxide powder.
Further, the magnetic steel belt layer is wrapped on the magnesium oxide mineral insulating layer after longitudinal continuous rolling and continuous electric arc welding treatment.
Further, the FEP sheath is coated on the magnetic steel belt layer through an extrusion method.
Further, the thickness of the FEP sheath is 0.8-1.2 mm.
Furthermore, constitute single core cable behind solid conductor, magnesium oxide mineral insulating layer, magnetic steel strip layer and the FEP nylon sheath combined connection, during the use with mated single core cable closely laminate on oil pumping oil pipe's outer wall and symmetric distribution, single core cable's periphery is passed through the location casing chucking and is connected oil pumping oil pipe is last.
Furthermore, the single-core cable and the oil pumping pipe are arranged in parallel and the outer diameter of the single-core cable is tangent.
Compared with the prior art, the utility model discloses a beneficial technological effect:
the utility model relates to a magnesium oxide mineral insulation rigid heating special cable, through the solid conductor, magnesium oxide mineral insulating layer, magnetism steel tape layer and FEP sheath complex connection that from inside to outside arrange together, specifically, 1) the solid conductor is electrolytic copper material, ensures that electrically conductive effectual, soft and big length; 2) the magnesium oxide mineral insulating layer is formed by a continuous powder filling process, has an insulating effect and high temperature resistance, and can realize long-length production; 3) the magnetic steel strip layer is formed by longitudinally and continuously coiling a synthetic tube and continuously welding by electric arc welding, so that the steel strip layer is airtight and continuously rolled to meet the requirement of the outer diameter by a medium-frequency softening process; 4) the FEP sheath is designed to resist high temperature and protect the magnetic steel band layer from corrosion, and can be continuously used within the temperature range of-85 to +200 ℃.
The utility model discloses a magnesium oxide mineral insulation rigid heating special cable principle of generating heat: the current passes through the solid conductor of the copper material in the cable, and the solid conductor and the magnetic steel belt layer generate strong eddy current action, so that the magnetic steel belt layer generates heat; the heating temperature of the cable can be controlled to be 150 ℃ or below according to needs by controlling the magnitude of the current so as to control the heating quantity of the cable. The magnesium oxide mineral insulated rigid heating special cable transfers heat generated by the heating cable into an oil pipe by a method of clinging to an oil pumping well pipe, thereby solving the problems of unsmooth oil pumping, low flow rate, low yield and the like.
The utility model has the advantages of simple structure, better corrosion resistance and heat resistance, and small cable brittleness; when the electric heating device is electrified, the conductor and the magnetic steel belt layer generate a strong eddy current effect, so that the magnetic steel belt layer generates heat, the oil pumping well pipe is heated and warmed, the oil pumping efficiency is ensured, the effect is particularly obvious in cold winter, and the electric heating device is particularly suitable for heating operation of the oil pumping well pipe of the oil well.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
FIG. 1 is a schematic cross-sectional view of the magnesium oxide mineral insulated rigid heating special cable of the present invention;
FIG. 2 is a schematic view of the present invention in use;
description of reference numerals: 1. a solid conductor; 2. a magnesium oxide mineral insulating layer; 3. a magnetic steel tape layer; 4. an FEP sheath; 10. a single core cable; 11. an oil pumping pipe; 12. the housing is positioned.
Detailed Description
As shown in fig. 1-2, a magnesium oxide mineral insulation rigid heating special cable comprises a solid conductor 1, a magnesium oxide mineral insulation layer 2, a magnetic steel tape layer 3 and an FEP sheath 4, wherein the solid conductor 1 is wrapped by the magnesium oxide mineral insulation layer 2, the magnetic steel tape layer 3 is arranged on the periphery of the magnesium oxide mineral insulation layer 2, and the FEP sheath 4 is wrapped on the periphery of the magnetic steel tape layer 3.
Specifically, the solid conductor 1 is a single solid copper wire.
Specifically, the magnesium oxide mineral insulating layer 2 is formed by heating and calcining compacted magnesium oxide powder, and specifically, the magnesium oxide mineral insulating layer is a mixture of magnesium oxide and any one or more of silicon dioxide, mica powder and kaolin. The mixture can be applied to a cable, and is coated on the outer peripheral surface of the solid conductor 1 through filling molding and calcining. During manufacturing, two sides of the magnetic steel belt layer 3 are longitudinally and continuously rolled for welding and fixing, meanwhile, magnesia powder is canned and tamped between the inner cavity of the roller pipe and the solid conductor 1, the magnesia powder is subjected to cable medium-frequency heating, re-rolling and re-medium-frequency heating to realize the calcining process, and finally, the magnesia powder and the solid conductor are combined and connected together.
And the magnetic steel belt layer 3 is wrapped on the magnesium oxide mineral insulating layer 2 after longitudinal continuous rolling and continuous electric arc welding treatment. Through the cooperation of magnetic steel tape layer 3 and solid conductor 1 who adopts single solid copper line, improve the rigidity of cable, anti striking ability is very strong, intensity when guaranteeing to use, the equipment of being convenient for.
The FEP sheath 4 is coated on the magnetic steel band layer 3 through an extrusion method, the thickness of the FEP sheath 4 is 0.8-1.2mm, and different thicknesses are set according to the size of the cross section of the cable. Specifically, FEP is an FEP material, which is translated into perfluoroethylene propylene, and is a copolymer of tetrafluoroethylene and hexafluoropropylene, and the content of hexafluoropropylene is about 15%, and is a modified material of polytetrafluoroethylene. The FEP has a crystalline melting point of 304 ℃ and a density of 2.15g/CC (grams per cubic centimeter). FEP can be applied to soft plastics, and has lower tensile strength, abrasion resistance and creep resistance than many engineering plastics; it is chemically inert, having a low dielectric constant (2.1) over a wide range of temperatures and frequencies; the material has excellent chemical stability and weather resistance. In general, the FEP sheath 4 has good water resistance, oil resistance, and high temperature resistance.
The utility model discloses the use as follows:
as shown in fig. 2, the solid conductor 1, the magnesium oxide mineral insulating layer 2, the magnetic steel band layer 3 and the FEP nylon sheath 4 are compositely connected to form a single core cable 10, when in use, the paired single core cables 10 are tightly attached to the outer wall of the oil pumping pipe 11 and symmetrically distributed, the periphery of the single core cable 10 is tightly clamped and connected to the oil pumping pipe 11 through the positioning shell 12, and the single core cable 10 and the oil pumping pipe 11 are arranged in parallel and have a tangent outer diameter; after the power is on, the heat generated by the heating special cable is transferred to the oil pumping pipe 11, and the crude oil in the pipe is heated through heat transfer, so that the viscosity of the crude oil is reduced, the flowing speed of the crude oil during oil pumping is improved, the problems of unsmooth oil pumping, low flow rate, low yield and the like are solved, and the oil conveying efficiency of the oil pumping pipe is ensured. In addition, the heating value of the cable is controlled by controlling the current, the heating temperature of the cable can be controlled to be 150 ℃ or below according to needs, and the use safety is ensured.
The magnesium oxide mineral insulation rigid heating special cable is circular in shape, can be smoothly inserted into a gap between the oil pumping pipe 11 and the positioning shell 12 during installation, and is communicated with a power supply connector at two ends after being inserted. Specifically, the positioning shell 12 is configured to be semicircular or circular and is sleeved on the oil pumping pipe 11, when the positioning shell is semicircular, two ends of the positioning shell are welded on the outer side wall of the oil pumping pipe 11, or two ends of the positioning shell are provided with flanges which are butted and then are fastened and connected through a bolt assembly; or the single-core cable 10 can be directly arranged into a hoop structure or other fastening structures as long as the positioning and fastening of the single-core cable 10 can be realized.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (8)
1. The utility model provides a magnesium oxide mineral insulation rigid heating special type cable which characterized in that: including solid conductor (1), magnesium oxide mineral insulating layer (2), magnetic steel band layer (3) and FEP sheath (4), magnesium oxide mineral insulating layer (2) parcel is in on the solid conductor (1), the periphery of magnesium oxide mineral insulating layer (2) is provided with magnetic steel band layer (3), the periphery cladding of magnetic steel band layer (3) has FEP sheath (4).
2. The magnesium oxide mineral insulated rigid heating specialty cable of claim 1, wherein: the solid conductor (1) adopts a single solid copper wire.
3. The magnesium oxide mineral insulated rigid heating specialty cable of claim 1, wherein: the magnesium oxide mineral insulating layer (2) is formed by heating and calcining compacted magnesium oxide powder.
4. The magnesium oxide mineral insulated rigid heating specialty cable of claim 1, wherein: the magnetic steel belt layer (3) is wrapped on the magnesium oxide mineral insulating layer (2) after longitudinal continuous rolling and continuous electric arc welding treatment.
5. The magnesium oxide mineral insulated rigid heating specialty cable of claim 1, wherein: the FEP sheath (4) is coated on the magnetic steel belt layer (3) through an extrusion method.
6. The magnesium oxide mineral insulated rigid heating specialty cable of claim 5, wherein: the thickness of the FEP sheath (4) is 0.8-1.2 mm.
7. The magnesium oxide mineral insulated rigid heating specialty cable of claim 1, wherein: constitute single core cable (10) after solid conductor (1), magnesia mineral insulating layer (2), magnetic steel strip layer (3) and FEP nylon sheath (4) composite connection, closely laminate mated single core cable (10) during the use on the outer wall of oil pumping pipe (11) and symmetric distribution, the periphery of single core cable (10) is connected through location casing (12) chucking on oil pumping pipe (11).
8. The magnesium oxide mineral insulated rigid heating specialty cable of claim 7, wherein: the single-core cable (10) and the oil pumping pipe (11) are arranged in parallel and have tangent outer diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220905664.2U CN217444086U (en) | 2022-04-19 | 2022-04-19 | Magnesium oxide mineral insulation rigid heating special cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220905664.2U CN217444086U (en) | 2022-04-19 | 2022-04-19 | Magnesium oxide mineral insulation rigid heating special cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217444086U true CN217444086U (en) | 2022-09-16 |
Family
ID=83217659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220905664.2U Active CN217444086U (en) | 2022-04-19 | 2022-04-19 | Magnesium oxide mineral insulation rigid heating special cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217444086U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114758815A (en) * | 2022-04-19 | 2022-07-15 | 明达线缆集团有限公司 | Magnesium oxide mineral insulation rigid heating special cable |
-
2022
- 2022-04-19 CN CN202220905664.2U patent/CN217444086U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114758815A (en) * | 2022-04-19 | 2022-07-15 | 明达线缆集团有限公司 | Magnesium oxide mineral insulation rigid heating special cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217444086U (en) | Magnesium oxide mineral insulation rigid heating special cable | |
| CN104170028A (en) | Coaxial cable, and method for producing coaxial cable | |
| US10770199B2 (en) | Concentric wireline cable | |
| CN105474329A (en) | Transmission line | |
| CN113380464A (en) | Method for processing submarine cable conductor for cost saving and efficiency improvement | |
| CN107071941B (en) | Steel belt sheath variable-frequency heating cable for oil well | |
| CN201017704Y (en) | Special electric cable for heating oil well with steel tube dirt-proof boot | |
| CN217444096U (en) | Mineral insulation flexible heating special cable | |
| KR101158018B1 (en) | Copper clad aluminum wire and menufacturing method thereof | |
| CN114758815A (en) | Magnesium oxide mineral insulation rigid heating special cable | |
| CN201499333U (en) | Heating cable | |
| CN206601987U (en) | A kind of answering machine data transmission cable | |
| US3909501A (en) | Hollow conductor power cable | |
| US3916078A (en) | Skid wire for pipe type electric cables | |
| US3080446A (en) | High voltage cable | |
| CN2406440Y (en) | Skin-effect heating cable | |
| CN210897828U (en) | Cable connector | |
| CN210518890U (en) | Carbon fiber heating cable with double metal sheaths | |
| CN211509310U (en) | Armored self-temperature-limiting heating element | |
| CN114898917A (en) | Mineral insulation flexible heating special cable | |
| CN202720959U (en) | Bending-resistance high-frequency digital cable | |
| CN106816222A (en) | Power transmission cable | |
| CN207264827U (en) | A kind of optoelectronic composite cable | |
| CN114334253A (en) | Heat tracing cable and preparation method and application thereof | |
| CN210200330U (en) | Ethylene-propylene insulating chlorosulfonated polyethylene sheath polyurethane protective layer degaussing cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |