CN205657854U - Oil well sucker rod carbon fiber heating cable - Google Patents
Oil well sucker rod carbon fiber heating cable Download PDFInfo
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- CN205657854U CN205657854U CN201620501003.8U CN201620501003U CN205657854U CN 205657854 U CN205657854 U CN 205657854U CN 201620501003 U CN201620501003 U CN 201620501003U CN 205657854 U CN205657854 U CN 205657854U
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Abstract
The utility model discloses an oil well sucker rod carbon fiber heating cable, including establishing copper conductor, conductor insulating layers, carbon fiber at the center generate heat layer, carbon fiber insulation layer and oversheath, conductor insulating layers and carbon fiber insulation in situ contain ceramic rubber layer respectively, and the carbon fiber generates heat the layer and through clamps in a plurality of and copper conductor electric connection, forms a plurality of resistance parallelly connected each other, the carbon fiber generates heat the layer and through a plurality of outer clamps and oversheath electric connection, forms through oversheath ground connection the parallel circuit of a plurality of resistance, outer clamp lies in the intermediate position of two adjacent clamps respectively, the oversheath is drawd along the longitudinal seam welding for the steel band and is formed. The beneficial effects of the utility model are that: electrothermal conversion efficiency is high, can reach 98%, the application temperature can reach 600 DEG C, and moisture -resistant insulating is effectual, and the security performance is high, intensity is high, and long service life, factory length can reach more than 2000 meters and not have the transverse joint welding, and tensile strength is strong, difficult fracture.
Description
Technical field
This utility model relates to one and adds electric heating cable, particularly to a kind of well rod carbon fiber heating cable and manufacture method thereof.
Background technology
Well rod heating cable application oil exploitation, especially in the recovery process of viscous crude.Because containing a large amount of paraffin, Colophonium in the crude oil of underground, along with crude oil sucker rod slowly promotes, closely the temperature of top layer crude oil declines accordingly, occurs that crude oil condenses phenomenon, and oil well crude oil flow reduces the most accordingly and stops production.In order to improve crude output, need in well rod, install one and add electric heating cable, promote crude oil temperature, to reach temperature-compensating, thus improve the mobile performance of crude oil.
As far back as the seventies in last century, China begins to apply beam hanger heat tracing technology.So far having more than 40 year, insulation single-core cable, mainly by kelvin effect principle, is namely put into hollow beam hanger by existing beam hanger heat tracing technology, cable bottom and hollow beam hanger short circuit, forming loop, after energising, cable generation eddy current makes beam hanger generate heat, and reaches thermal compensation effect.Thus find out cable quality and service life, determine oil recovery amount.
Traditional heating construction of cable is that steel strand wires are stranded with copper conductor, and outside is provided with polypropylene insulation layer.Its operating temperature can only achieve 150 DEG C, and owing to down-hole oil temperature is higher, up to about 280 DEG C, insulant heatproof gap is relatively big, and service life is shorter, easily punctures.The heating construction of cable after improvement includes that single copper conductor, Kapton are wrapped, fluorine plastic film is wrapped and steel tube dirt-proof boot the most successively.The heat resisting temperature that wherein fluorine plastic film is wrapped is up to 250 DEG C, and the insulated electric conductor being positioned at steel tube dirt-proof boot is docked by every section of 100m segmentation, and steel tube dirt-proof boot is welded by every section of 6-9m segmentation transverse joint.Copper conductor is made to generate heat by increase electric current during the work of this heating cable, and by steel tube dirt-proof boot, heat is passed to sucker rod, not only electric conversion efficiency is low, power consumption is big, although improve heat resisting temperature, but still not up to down-hole oil temperature, and there is cable laying easy fracture, insulate the wrapped non-moistureproof problem such as easily puncture.
Utility model content
It is high that technical problem to be solved in the utility model is to provide a kind of electric conversion efficiency, and energy-saving high-temperature-resistant, intensity are high, and damp proof insulation is effective, service life length well rod carbon fiber heating cable and manufacture method.
For solving the problems referred to above, this utility model adopts the following technical scheme that
A kind of well rod carbon fiber heating cable, including the copper conductor being located at center, it is characterized in that: be sequentially provided with insulating layer of conductor, carbon fiber heating layer, carbon fiber insulating barrier and oversheath outside copper conductor, ceramic-rubber layer is contained respectively in described insulating layer of conductor and carbon fiber insulating barrier, along being longitudinally laid with inner groove and being positioned on carbon fiber heating layer at each inner groove and be arranged with inside collar respectively on insulating layer of conductor, carbon fiber heating layer is electrically connected with copper conductor by multiple inside collars, forms multiple resistance parallel with one another；Being evenly equipped with outer groove on carbon fiber insulating barrier and be respectively equipped with outside collar in outer groove, carbon fiber heating layer is electrically connected with oversheath by multiple outside collars, is formed the shunt circuit of the plurality of resistance by oversheath ground connection；Described outside collar lays respectively at the centre position of adjacent two inside collars, and described oversheath is that steel band forms along longitudinal seam welding drawing.
As further preferably, described insulating layer of conductor is made up of described ceramic-rubber layer and insulation sheath the most successively.
As further preferably, described carbon fiber insulating barrier is made up of Mica tape layer, described ceramic-rubber layer and insulation outer jacket the most successively.
As further preferably, the axial width of described inner groove and outer groove is 20mm, and the spacing of adjacent two inner grooves or outer groove is 2～42M.
As further preferably, described carbon fiber heating layer is to be stranded on insulating layer of conductor by one or more carbon fiber exothermic part to be formed, stranded 25-28 times that pitch is carbon fiber heating layer external diameter of carbon fiber exothermic part.
The beneficial effects of the utility model are:
1, owing to being sequentially provided with insulating layer of conductor, carbon fiber heating layer, carbon fiber insulating barrier and oversheath outside copper conductor, carbon fiber heating layer is to be stranded on insulation sheath by carbon fiber exothermic part to be formed, form heating resistor by carbon fiber exothermic part after energising to generate heat, its electric conversion efficiency is high, can reach 98%, and use under carbon fiber heating floor height temperature state and do not aoxidize, the load of the electric current of its unit are does not changes.In addition, owing to heat conduction velocity is directly proportional to heater surface area, and the individual carbon fibers diameter constituting carbon fiber exothermic part only has 0.02mm, therefore carbon fiber exothermic part is generally made up of several ten thousand carbon fibers, and its surface area is big is that existing to add electric heating cable incomparable.Therefore, carbon fiber heating cable can realize energy-conservation reaching more than 30%.
2, ceramic-rubber layer is all contained in the insulating layer of conductor adding electric heating cable due to this and carbon fiber insulating barrier, this ceramic-rubber layer becomes porcelain tendre rubber below 300 DEG C, it is as temperature between 300-600 DEG C to improve, crust speed is made to accelerate, pottery insulation can be reached at 600 DEG C, i.e. reach inorganic matter mineral insulation, the electric heating cable that adds made as insulating barrier hence with this ceramic-rubber uses temperature to can reach 600 DEG C, damp proof insulation is effective, security performance is high, the immersion even if oversheath is worn, cable also will not be breakdown.
3, drawing owing to oversheath is steel band along longitudinal seam welding and form, therefore intensity is high, and service life is long, and factory length can reach more than 2000 meters and welds without transverse joint, tensile property by force, not easy fracture.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is A-A cutaway view Amplified image of the present utility model.
Fig. 3 is B-B cutaway view Amplified image of the present utility model.
Fig. 4 is C-C cutaway view Amplified image of the present utility model.
Fig. 5 is circuit theory diagrams of the present utility model.
In figure: copper conductor 1, ceramic-rubber layer 2, insulate sheath 3, carbon fiber heating layer 4, Mica tape layer 5, ceramic-rubber layer 6, and insulate outer jacket 7, oversheath 8, inner groove 9, inside collar 10, outer groove 11, outside collar 12.
Detailed description of the invention
Embodiment 1
As shown in Figure 1 to 4, a kind of well rod carbon fiber heating cable that this utility model relates to, including being located at the copper conductor 1 at center, this copper conductor 1 is to be extruded from by extruder by oxygen-free copper bar, a diameter of Φ 5.2mm of described copper conductor 1.Insulating layer of conductor, carbon fiber heating layer 4, carbon fiber insulating barrier and oversheath 8 it is sequentially provided with outside copper conductor 1.
Described insulating layer of conductor is made up of ceramic-rubber layer 2 and insulation sheath 3 the most successively.Described carbon fiber insulating barrier is made up of Mica tape layer 5, ceramic-rubber layer 6 and insulation outer jacket 7 the most successively.
Described ceramic-rubber layer 2 and 6 counts that to comprise composition as follows: 40 kilograms of silicone rubber, ceramics 25 kilograms, 15 kilograms of glass dust, silica flour 10 kilograms, mica powder 8 kilograms, Fumed silica 10 kilograms, coupling agent 0.5 kilogram, softening agent 5 kilograms, double two or five vulcanizing agent 0.8 kilogram by weight.
Described silicone rubber is preferably methyl silicone rubber, and its Mooney viscosity ML (1+4) 180 DEG C is 30～35, ethylene contents is 63%.It functions as material of main part, has low temperature resistant-50 DEG C and 180 DEG C of characteristics of high temperature, does not produce carbide for more than 300 DEG C at high temperature, to reach cable performance needed for this utility model.
Described ceramics granularity is 3000 mesh, and heatproof is 1200 DEG C.This ceramics acts primarily as filling, insulating effect below 300 DEG C, and when more than 300 DEG C of high temperature, ceramics has crust, high-temperature insulation, non-carbonized effect.
The purity of described glass dust is more than or equal to 95%, and granularity is 325 mesh, and heatproof is 400 DEG C.This glass dust has crust, high-temperature insulation characteristic when high temperature, the insulating barrier making formation has bigger mechanical strength, certain mechanical impact force can be born, at high temperature or the electrical insulation properties still in the case of making moist with excellence, it can be ensured that cable taps at high-temp combustion, machinery and keeps the normal work of a period of time under the conditions of trickle.
Described silica flour heatproof, up to 1250 DEG C, has and makes the quick encrustment of silicone rubber.Described mica powder granularity is 400 mesh, for improving the high-temperature insulation performance of cable.Described Fumed silica can provide best strengthening action to silicone rubber.Described coupling agent preferably with silane coupler, is used for making various raw material well combine.Described softening agent is stearic acid or methyl-silicone oil, for regulating the flexibility of ceramic-rubber layer so that it is be easy to extrusion processing.
Described double two or five vulcanizing agents can make rubber molecular chain play cross-linking reaction, makes linear molecule form space network, improves cable machinery performance and insulating properties.
Described insulation sheath 3 is to be formed by monolayer mica tape overlap joint is wrapped, and its overlapping rate is more than or equal to 15%.Described insulation outer jacket 7 is to be formed by double-deck mica tape overlap joint is wrapped.
As shown in Figure 1 and Figure 5, along being longitudinally laid with several inner grooves 9 on insulating layer of conductor, and be positioned at each inner groove 9 in carbon fiber heating layer 4 periphery and to be arranged with inside collar 10 respectively, carbon fiber heating layer 4 is electrically connected with copper conductor 1 by multiple inside collars 10, forms multiple resistance R parallel with one another；Carbon fiber insulating barrier is evenly equipped with outer groove 11, the outside collar 12 fixed on carbon fiber heating layer 4 it is respectively equipped with in outer groove 11, carbon fiber heating layer 4 is electrically connected with oversheath 8 by multiple outside collars 12, is formed the shunt circuit of multiple resistance R by oversheath 8 ground connection.Described outside collar 12 lays respectively at the centre position between adjacent two inside collars 10, and the axial width of described inner groove 9 and outer groove 11 is 20mm, and the spacing of adjacent two inner grooves 9 or outer groove 11 is 2～42M.
Described carbon fiber heating layer 4 is to be stranded on insulation sheath 3 by one or more carbon fiber exothermic part to be formed, and the pitch of carbon fiber exothermic part is 25-28 times of carbon fiber heating layer 4 external diameter.The present embodiment is as a example by 1 12K carbon fiber exothermic part, and the spacing of adjacent two inner grooves 9 is 9m.
Described oversheath 8 forms along longitudinal seam welding drawing for steel band, tight gapless between oversheath 8 and insulation outer jacket 7.
The manufacture method of the described well rod carbon fiber heating cable that the present embodiment relates to, comprises step as follows:
1, conductor extruding
Select the oxygen-free copper bar of a diameter of Φ 8mm, after high-temperature extruder is extruded, obtains the copper conductor 1 of Φ 5.2mm, the resistivity of copper conductor 1 after extruding, can be reduced.
2, insulating layer of conductor is made
1) the above-mentioned raw material preparing described ceramic-rubber layer 2 is put into rubber mixing machine is carried out mixing, control melting temperature be 50 DEG C, mixing time is 20min.Carry out being filtrated to get required ceramic-rubber by rubber strainer after mixing；The drainage screen of described rubber strainer is set to three layers, is followed successively by 20 mesh, 40 mesh, 60 mesh from the inside to the outside.
The ceramic-rubber of preparation being added Teh Extrusion Press for Extruding Silicone Rubber Products, by Teh Extrusion Press for Extruding Silicone Rubber Products, ceramic-rubber extrusion is wrapped in formation ceramic-rubber layer 2 outside copper conductor 1, the thickness controlling ceramic-rubber layer 2 is 0.8 ± 0.1mm so that it is smooth surface is smooth, the most eccentric；Continuous vulcanization is carried out subsequently into curing tube；Control curing tube pressure is 0.8 ± 0.05Mpa, temperature is 170 ± 5 DEG C.
2) carrying out spark bulge test, test voltage value 10Kv by power frequency spark tester, test rate to reach 100%；Forming insulation sheath 3 with monolayer mica tape overlap joint is wrapped again, control its overlapping rate >=15%, controlling insulation sheath 3 external diameter is Φ 7.1 ± 0.15mm；Insulating layer of conductor is formed by described ceramic-rubber layer 2 and insulation sheath 3.
3, carbon fiber heating layer is made
Being that 9m is uniform by spacing on insulating layer of conductor offers several inner grooves 9, copper conductor 1 outer rim is exposed by each inner groove 9, and the axial width controlling inner groove 9 is 20mm.1 12K carbon fiber exothermic part is stranded on insulation sheath 3 and forms carbon fiber heating layer 4.
Carbon fiber exothermic part and copper conductor 1 are blocked jail with inside collar 10 at corresponding each inner groove 9 by carbon fiber heating layer 4 respectively, guarantee inside collar 10 external diameters≤carbon fiber heating layer 4 external diameter simultaneously, make carbon fiber heating layer 4 be electrically connected with copper conductor 1 by multiple inside collars 10, form multiple resistance R parallel with one another.
4, carbon fiber insulating barrier is made
1) outside carbon fiber heating layer 4, overlap joint is wound around monolayer mica tape and forms Mica tape layer 5, controls overlapping rate >=15% of Mica tape layer 5, and external diameter is Φ 9.8 ± 0.15mm.
2) ceramic-rubber extrusion step 2 prepared by Teh Extrusion Press for Extruding Silicone Rubber Products is wrapped in formation ceramic-rubber layer 6 outside Mica tape layer 5, and the thickness controlling ceramic-rubber layer 6 is 0.8 ± 0.1mm, makes ceramic-rubber layer 6 smooth surface smooth, the most eccentric；Carrying out continuous vulcanization subsequently into curing tube, control curing tube pressure is 0.8 ± 0.05Mpa, temperature is 170 ± 5 DEG C.
3) carrying out spark bulge test, test voltage value 10Kv by power frequency spark tester, test rate to reach 100%；Forming insulation outer jacket 7 with double-deck mica tape overlap joint is wrapped again, controlling the insulation wrapped external diameter of outer jacket 7 is Φ 11.7 ± 0.15mm.Carbon fiber insulating barrier is formed by Mica tape layer 5, outside ceramic-rubber layer 6 and insulation outer jacket 7.
5, uniform on carbon fiber insulating barrier multiple outer groove 11 is offered, make the most corresponding centre position between adjacent two inner grooves 9 of each outer groove 11, the axial width controlling outer groove 11 is 20mm, by each outer groove 11, carbon fiber heating layer 4 is exposed a circle.In each outer groove 11, it is respectively clamped into outside collar 12 carbon fiber heating layer 4 is blocked jail, and make outside collar 12 external diameter external diameter 0.05～0.35mm slightly larger than insulation outer jacket 7.
6, oversheath is made
According to the insulation wrapped rear outside diameter of cable of outer jacket 7 and the external diameter of finished cable, determine required width of steel band and thickness；Steel band is indulged the longitudinal seam welding drawing formation oversheath 8 after bag bonding machine crimps and crimps along steel band by cable steel sheath and is set in the outside of insulation outer jacket 7, guarantee that oversheath 8 is in close contact with outside collar 12 after pressing, make carbon fiber heating layer 4 be electrically connected with oversheath 8 by multiple outside collars 12；It is finally reached finished cable requirement external diameter, reaches the tight gapless of the construction of cable simultaneously.
7, finally carry out the D.C. resistance detection of copper conductor 1 and oversheath 8, i.e. can be made into finished cable.
Embodiment 2
As shown in Figure 1 to 4, a kind of well rod carbon fiber heating cable that this utility model relates to, including being located at the copper conductor 1 at center, this copper conductor 1 is to be extruded from by extruder by oxygen-free copper bar, a diameter of Φ 5.2mm of described copper conductor 1.Insulating layer of conductor, carbon fiber heating layer 4, carbon fiber insulating barrier and oversheath 8 it is sequentially provided with outside copper conductor 1.
Described insulating layer of conductor is made up of ceramic-rubber layer 2 and insulation sheath 3 the most successively.Described carbon fiber insulating barrier is made up of Mica tape layer 5, ceramic-rubber layer 6 and insulation outer jacket 7 the most successively.
Described ceramic-rubber layer 2 and 6 counts that to comprise composition as follows: 45 kilograms of silicone rubber, ceramics 20 kilograms, 20 kilograms of glass dust, silica flour 5 kilograms, mica powder 10 kilograms, Fumed silica 5 kilograms, coupling agent 1 kilogram, softening agent 2 kilograms, double two or five vulcanizing agent 1 kilogram by weight.
Described carbon fiber heating layer 4 is to be stranded on insulation sheath 3 by one or more carbon fiber exothermic part to be formed, and the pitch of carbon fiber exothermic part is 25-28 times of carbon fiber heating layer 4 external diameter.The present embodiment is as a example by 6 12K carbon fiber exothermic parts, and the spacing of adjacent two inner grooves 9 is as a example by 30m.
Other structure of well rod carbon fiber heating cable disclosed in the present embodiment is with embodiment 1, and the present embodiment repeats no more.
The manufacture method of the described well rod carbon fiber heating cable that the present embodiment relates to, comprises step as follows:
1, conductor extruding
Select the oxygen-free copper bar of a diameter of Φ 8mm, after high-temperature extruder is extruded, obtains the copper conductor 1 of Φ 5.2mm, the resistivity of copper conductor 1 after extruding, can be reduced.
2, insulating layer of conductor is made
1) the above-mentioned raw material preparing described ceramic-rubber layer 2 is put into rubber mixing machine is carried out mixing, control melting temperature be 60 DEG C, mixing time is 15min.Carry out being filtrated to get required ceramic-rubber by rubber strainer after mixing；The drainage screen of described rubber strainer is set to three layers, is followed successively by 20 mesh, 40 mesh, 60 mesh from the inside to the outside.
The ceramic-rubber of preparation being added Teh Extrusion Press for Extruding Silicone Rubber Products, by Teh Extrusion Press for Extruding Silicone Rubber Products, ceramic-rubber extrusion is wrapped in formation ceramic-rubber layer 2 outside copper conductor 1, the thickness controlling ceramic-rubber layer 2 is 0.8 ± 0.1mm so that it is smooth surface is smooth, the most eccentric；Continuous vulcanization is carried out subsequently into curing tube；Control curing tube pressure is 0.8 ± 0.05Mpa, temperature is 170 ± 5 DEG C.
2) carrying out spark bulge test, test voltage value 10Kv by power frequency spark tester, test rate to reach 100%；Forming insulation sheath 3 with monolayer mica tape overlap joint is wrapped again, control its overlapping rate >=15%, controlling insulation sheath 3 external diameter is Φ 7.1 ± 0.15mm；Insulating layer of conductor is formed by described ceramic-rubber layer 2 and insulation sheath 3.
3, carbon fiber heating layer is made
Being that 30m is uniform by spacing on insulating layer of conductor offers several inner grooves 9, copper conductor 1 outer rim is exposed by each inner groove 9, and the axial width controlling inner groove 9 is 20mm；6 12K carbon fiber exothermic parts are stranded on insulation sheath 3 and form carbon fiber heating layer 4.
Carbon fiber exothermic part and copper conductor 1 are blocked jail with inside collar 10 at corresponding each inner groove 9 by carbon fiber heating layer 4 respectively, guarantee inside collar 10 external diameters≤carbon fiber heating layer 4 external diameter simultaneously, make carbon fiber heating layer 4 be electrically connected with copper conductor 1 by multiple inside collars 10, form multiple resistance R parallel with one another.
4, carbon fiber insulating barrier is made
1) outside carbon fiber heating layer 4, overlap joint is wound around monolayer mica tape and forms Mica tape layer 5, controls overlapping rate >=15% of Mica tape layer 5, and external diameter is Φ 9.8 ± 0.15mm.
2) ceramic-rubber extrusion step 2 prepared by Teh Extrusion Press for Extruding Silicone Rubber Products is wrapped in formation ceramic-rubber layer 6 outside Mica tape layer 5, and the thickness controlling ceramic-rubber layer 6 is 0.8 ± 0.1mm, makes ceramic-rubber layer 6 smooth surface smooth, the most eccentric；Carrying out continuous vulcanization subsequently into curing tube, control curing tube pressure is 0.8 ± 0.05Mpa, temperature is 170 ± 5 DEG C.
3) carrying out spark bulge test, test voltage value 10Kv by power frequency spark tester, test rate to reach 100%；Forming insulation outer jacket 7 with double-deck mica tape overlap joint is wrapped again, controlling the insulation wrapped external diameter of outer jacket 7 is Φ 11.7 ± 0.15mm.Carbon fiber insulating barrier is formed by Mica tape layer 5, outside ceramic-rubber layer 6 and insulation outer jacket 7.
5, uniform on carbon fiber insulating barrier multiple outer groove 11 is offered, make the most corresponding centre position between adjacent two inner grooves 9 of each outer groove 11, the axial width controlling outer groove 11 is 20mm, by each outer groove 11, carbon fiber heating layer 4 is exposed a circle.In each outer groove 11, it is respectively clamped into outside collar 12 carbon fiber heating layer 4 is blocked jail, and make outside collar 12 external diameter external diameter 0.05～0.35mm slightly larger than insulation outer jacket 7.
6, oversheath is made
According to the insulation wrapped rear outside diameter of cable of outer jacket 7 and the external diameter of finished cable, determine required width of steel band and thickness；Steel band is indulged the longitudinal seam welding drawing formation oversheath 8 after bag bonding machine crimps and crimps along steel band by cable steel sheath and is set in the outside of insulation outer jacket 7, guarantee that oversheath 8 is in close contact with outside collar 12 after pressing, make carbon fiber heating layer 4 be electrically connected with oversheath 8 by multiple outside collars 12；It is finally reached finished cable requirement external diameter, reaches the tight gapless of the construction of cable simultaneously.
7, finally carry out the D.C. resistance detection of copper conductor 1 and oversheath 8, i.e. can be made into finished cable.
Embodiment 3
As shown in Figure 1 to 4, a kind of well rod carbon fiber heating cable that this utility model relates to, including being located at the copper conductor 1 at center, this copper conductor 1 is to be extruded from by extruder by oxygen-free copper bar, a diameter of Φ 5.2mm of described copper conductor 1.Insulating layer of conductor, carbon fiber heating layer 4, carbon fiber insulating barrier and oversheath 8 it is sequentially provided with outside copper conductor 1.
Described insulating layer of conductor is made up of ceramic-rubber layer 2 and insulation sheath 3 the most successively.Described carbon fiber insulating barrier is made up of Mica tape layer 5, ceramic-rubber layer 6 and insulation outer jacket 7 the most successively.
Described ceramic-rubber layer 2 and 6 counts that to comprise composition as follows: 42 kilograms of silicone rubber, ceramics 18 kilograms, 17 kilograms of glass dust, silica flour 8 kilograms, mica powder 9 kilograms, Fumed silica 8 kilograms, coupling agent 0.8 kilogram, softening agent 4 kilograms, double two or five vulcanizing agent 0.9 kilogram by weight.
Described carbon fiber heating layer 4 is to be stranded on insulation sheath 3 by one or more carbon fiber exothermic part to be formed, and the pitch of carbon fiber exothermic part is 25-28 times of carbon fiber heating layer 4 external diameter.The present embodiment is as a example by 12 12K carbon fiber exothermic parts, and the spacing of adjacent two inner grooves 9 is as a example by 42m.
Other structure of well rod carbon fiber heating cable disclosed in the present embodiment is with embodiment 1, and the present embodiment repeats no more.
The manufacture method of the described well rod carbon fiber heating cable that the present embodiment relates to, comprises step as follows:
1, conductor extruding
Select the oxygen-free copper bar of a diameter of Φ 8mm, after high-temperature extruder is extruded, obtains the copper conductor 1 of Φ 5.2mm, the resistivity of copper conductor 1 after extruding, can be reduced.
2, insulating layer of conductor is made
1) the above-mentioned raw material preparing described ceramic-rubber layer 2 is put into rubber mixing machine is carried out mixing, control melting temperature be 55 DEG C, mixing time is 18min.Carry out being filtrated to get required ceramic-rubber by rubber strainer after mixing；The drainage screen of described rubber strainer is set to three layers, is followed successively by 20 mesh, 40 mesh, 60 mesh from the inside to the outside.
The ceramic-rubber of preparation being added Teh Extrusion Press for Extruding Silicone Rubber Products, by Teh Extrusion Press for Extruding Silicone Rubber Products, ceramic-rubber extrusion is wrapped in formation ceramic-rubber layer 2 outside copper conductor 1, the thickness controlling ceramic-rubber layer 2 is 0.8 ± 0.1mm so that it is smooth surface is smooth, the most eccentric；Continuous vulcanization is carried out subsequently into curing tube；Control curing tube pressure is 0.8 ± 0.05Mpa, temperature is 170 ± 5 DEG C.
2) carrying out spark bulge test, test voltage value 10Kv by power frequency spark tester, test rate to reach 100%；Forming insulation sheath 3 with monolayer mica tape overlap joint is wrapped again, control its overlapping rate >=15%, controlling insulation sheath 3 external diameter is Φ 7.1 ± 0.15mm；Insulating layer of conductor is formed by described ceramic-rubber layer 2 and insulation sheath 3.
3, carbon fiber heating layer is made
Offering several inner grooves 9 by spacing 42m is uniform on insulating layer of conductor, copper conductor 1 outer rim exposed by each inner groove 9, the axial width controlling inner groove 9 is 20mm；12 12K carbon fiber exothermic parts are stranded on insulation sheath 3 and form carbon fiber heating layer 4.
Carbon fiber exothermic part and copper conductor 1 are blocked jail with inside collar 10 at corresponding each inner groove 9 by carbon fiber heating layer 4 respectively, guarantee inside collar 10 external diameters≤carbon fiber heating layer 4 external diameter simultaneously, make carbon fiber heating layer 4 be electrically connected with copper conductor 1 by multiple inside collars 10, form multiple resistance parallel with one another.
4, carbon fiber insulating barrier is made
1) outside carbon fiber heating layer 4, overlap joint is wound around monolayer mica tape and forms Mica tape layer 5, controls overlapping rate >=15% of Mica tape layer 5, and external diameter is Φ 9.8 ± 0.15mm.
2) ceramic-rubber extrusion step 2 prepared by Teh Extrusion Press for Extruding Silicone Rubber Products is wrapped in formation ceramic-rubber layer 6 outside Mica tape layer 5, and the thickness controlling ceramic-rubber layer 6 is 0.8 ± 0.1mm, makes ceramic-rubber layer 6 smooth surface smooth, the most eccentric；Carrying out continuous vulcanization subsequently into curing tube, control curing tube pressure is 0.8 ± 0.05Mpa, temperature is 170 ± 5 DEG C.
3) carrying out spark bulge test, test voltage value 10Kv by power frequency spark tester, test rate to reach 100%；Forming insulation outer jacket 7 with double-deck mica tape overlap joint is wrapped again, controlling the insulation wrapped external diameter of outer jacket 7 is Φ 11.7 ± 0.15mm.Carbon fiber insulating barrier is formed by Mica tape layer 5, outside ceramic-rubber layer 6 and insulation outer jacket 7.
5, uniform on carbon fiber insulating barrier multiple outer groove 11 is offered, make the most corresponding centre position between adjacent two inner grooves 9 of each outer groove 11, the axial width controlling outer groove 11 is 20mm, by each outer groove 11, carbon fiber heating layer 4 is exposed a circle.In each outer groove 11, it is respectively clamped into outside collar 12 carbon fiber heating layer 4 is blocked jail, and make outside collar 12 external diameter external diameter 0.05～0.35mm slightly larger than insulation outer jacket 7.
6, oversheath is made
According to the insulation wrapped rear outside diameter of cable of outer jacket 7 and the external diameter of finished cable, determine required width of steel band and thickness；Steel band is indulged the longitudinal seam welding drawing formation oversheath 8 after bag bonding machine crimps and crimps along steel band by cable steel sheath and is set in the outside of insulation outer jacket 7, guarantee that oversheath 8 is in close contact with outside collar 12 after pressing, make carbon fiber heating layer 4 be electrically connected with oversheath 8 by multiple outside collars 12；It is finally reached finished cable requirement external diameter, reaches the tight gapless of the construction of cable simultaneously.
7, finally carry out the D.C. resistance detection of copper conductor 1 and oversheath 8, i.e. can be made into finished cable.
The electric heating cable that adds made by above-described embodiment adds the performance parameter contrast of electric heating cable as shown in table 1 with existing:
Table 1
Can be drawn by table 1 data, its electric conversion efficiency of well rod carbon fiber heating cable disclosed in this utility model is high, can reach 98%, can realize energy-conservation reaching more than 30%.Using temperature to can reach 600 DEG C, damp proof insulation is effective, and security performance is high.Factory length can reach more than 2000 meters and welds without transverse joint, and tensile property is strong, not easy fracture.
Although embodiment of the present utility model is disclosed as above, but it is not restricted in description and embodiment listed utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, it is easily achieved other amendment, therefore, under the general concept limited without departing substantially from claim and equivalency range, this utility model is not limited to specific details and shown here as the legend with description.
Claims (5)
1. a well rod carbon fiber heating cable, including being located at the copper conductor at center, is characterized in that:
Insulating layer of conductor, carbon fiber heating layer, carbon fiber insulating barrier and oversheath it is sequentially provided with outside copper conductor,
Contain ceramic-rubber layer respectively, in described insulating layer of conductor and carbon fiber insulating barrier on insulating layer of conductor all
It is laid with inner groove and is positioned on carbon fiber heating layer at each inner groove and is arranged with inside collar, carbon respectively
Fiber heating layer is electrically connected with copper conductor by multiple inside collars, forms multiple resistance parallel with one another；?
It is evenly equipped with outer groove on carbon fiber insulating barrier and in outer groove, is respectively equipped with outside collar, carbon fiber heating layer
Electrically connected with oversheath by multiple outside collars, formed the parallel connection of the plurality of resistance by oversheath ground connection
Loop；Described outside collar lays respectively at the centre position of adjacent two inside collars, and described oversheath is steel band
Draw along longitudinal seam welding and form.
Well rod carbon fiber heating cable the most according to claim 1, is characterized in that: described
Insulating layer of conductor is made up of described ceramic-rubber layer and insulation sheath the most successively.
Well rod carbon fiber heating cable the most according to claim 1, is characterized in that: described
Carbon fiber insulating barrier is the most successively by Mica tape layer, described ceramic-rubber layer and insulation outer jacket
Constitute.
Well rod carbon fiber heating cable the most according to claim 1, is characterized in that: described
The axial width of inner groove and outer groove is 20mm, the spacing of adjacent two inner grooves or outer groove be 2～
42M。
Well rod carbon fiber heating cable the most according to claim 1, is characterized in that: described
Carbon fiber heating layer is to be stranded on insulating layer of conductor by one or more carbon fiber exothermic part to be formed, and carbon is fine
Dimension stranded 25-28 times that pitch is carbon fiber heating layer external diameter of heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620501003.8U CN205657854U (en) | 2016-05-30 | 2016-05-30 | Oil well sucker rod carbon fiber heating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620501003.8U CN205657854U (en) | 2016-05-30 | 2016-05-30 | Oil well sucker rod carbon fiber heating cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105848321A (en) * | 2016-05-30 | 2016-08-10 | 沈兴线缆集团有限公司 | Oil well sucker rod carbon fiber heating cable and manufacturing method of the cable |
| CN110536495A (en) * | 2019-09-24 | 2019-12-03 | 秦皇岛津峰线缆制造有限公司 | A kind of bimetallic sheath carbon fiber anti-explosion heating cable and its manufacturing method and special equipment |
| CN113374447A (en) * | 2021-07-09 | 2021-09-10 | 沈阳工业大学 | Step power electrical heating oil production device |
-
2016
- 2016-05-30 CN CN201620501003.8U patent/CN205657854U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105848321A (en) * | 2016-05-30 | 2016-08-10 | 沈兴线缆集团有限公司 | Oil well sucker rod carbon fiber heating cable and manufacturing method of the cable |
| CN110536495A (en) * | 2019-09-24 | 2019-12-03 | 秦皇岛津峰线缆制造有限公司 | A kind of bimetallic sheath carbon fiber anti-explosion heating cable and its manufacturing method and special equipment |
| CN113374447A (en) * | 2021-07-09 | 2021-09-10 | 沈阳工业大学 | Step power electrical heating oil production device |
| CN113374447B (en) * | 2021-07-09 | 2022-12-02 | 沈阳工业大学 | Step power electrical heating oil production device |
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