CN110011232A - A kind of interconnection method of 10kV three-core cable - Google Patents
A kind of interconnection method of 10kV three-core cable Download PDFInfo
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- CN110011232A CN110011232A CN201910243903.5A CN201910243903A CN110011232A CN 110011232 A CN110011232 A CN 110011232A CN 201910243903 A CN201910243903 A CN 201910243903A CN 110011232 A CN110011232 A CN 110011232A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
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Abstract
The present invention relates to a kind of interconnection methods of 10kV three-core cable, it meets the requirements according to the junction of two cables after interconnection method of the present invention docking, the permanent docking of cable can be achieved, in the interim reconstruction and extension project of cable run, remove the junction of existing cable, it recycles original cable terminal and the permanent docking of two cables can be realized using the interconnection method of 10kV three-core cable of the present invention, be not necessarily to sawed-off terminals；It when needing to restore original method of operation, can restore after removing the connector of two cables, avoid saving reconstruction cost because of loss caused by cutting stripping cable.
Description
Technical field
The present invention relates to field of cable technology, in particular to a kind of interconnection method of 10kV three-core cable.
Background technique
When the interim reorganization and expansion of cable run, need to remove the equipment such as transformer cabinet, and make after the original terminals of cable are removed
Make transition joint, then temporary line is docked by transition joint, if desired restores original method of operation, then it is intermediate eventually to need to cut stripping
Connector simultaneously docks after remaking terminals again, and cable, which cuts stripping, will cause the loss of cable length, results even in cable
Surplus is insufficient, improves reconstruction cost.
Summary of the invention
The main object of the present invention is to provide a kind of cable butting method convenient for facilitating docking and dismantling, the technology of use
Scheme are as follows:
A kind of interconnection method of 10kV three-core cable, comprising the following steps:
Step S1. prepares two cables, and one end to be docked is respectively provided with terminals, the end of every cable on two cables
End respectively includes shielded layer ground wire, armor ground wire, A phase core, B phase core and C phase core, wherein A phase core and C phase line
Core is located at the two sides of the B phase core, the corresponding shielded layer ground wire of every cable, armor ground wire, A phase core, B phase core and
The end of C phase core is separately installed with line nose；
Step S2. is inserted into A phase core, B phase core and C phase core pair on the basis of step S1, by three bolts respectively
In the nose inner hole for the two line noses answered, three bolts pass through nut respectively mutually compresses its corresponding two line nose；
Step S3. is provide with grading shield on the basis of step S2, in the periphery of every phase core junction respectively, and exists respectively
Semi-conductive tape is wound on each grading shield；
Step S4. winds polytetrafluoroethyl-ne between two major insulation of isopen core respectively on the basis of step S3
Alkene band；
It is exhausted that step S5. winds waterproof on the basis of step S4, respectively between the incision position of the tri-finger stall of isopen core
Marginal zone carries out insulation processing；
Step S6. winds marine glue between the incision position of the tri-finger stall of isopen core respectively on the basis of step S5
Band carries out water-proofing treatment；
Step S7. winds inviscid modeling between the incision position of two cable tri-finger stalls respectively on the basis of step S6
Material strip；
Bolt is inserted into the nose inner hole of two shielded layer ground wires by step S8. on the basis of step S7, and is led to
Crossing nut mutually compresses the line nose of two shielded layer ground wires on bolt；With being inserted into two armors by bolt
In the nose inner hole of line, and mutually compress the line nose of two armor ground wires on bolt by nut；
Step S9. is on the basis of step S8, between one end that two shielded layer ground wires are located remotely from each other and two
Waterproof insulation band is wound between one end that the armor ground wire is located remotely from each other respectively and carries out insulation processing；
Step S10. is on the basis of step S9, between one end for being located remotely from each other of shielded layer ground wire of two cables
Wind inviscid plastic tape；
Step S11. winds waterproof between one end that two tri-finger stalls are located remotely from each other on the basis of step S10
Adhesive tape carries out water-proofing treatment；
Step S12. winds armouring between one end that two tri-finger stalls are located remotely from each other on the basis of step S11
Layer.
Preferably, round and smooth with corner polishing of the sand paper to each line nose after completing step S1.
Preferably, each grading shield respectively includes two cone-shaped hoods, described in each grading shield is two corresponding
The cone bottom surface of cone-shaped hood is bonded to each other.
Preferably, each cone-shaped hood respectively includes two arc groove bodies, and two arc groove bodies are respectively sleeved at
On the corresponding core and piece together the cone-shaped hood.
Preferably, silicone grease layer is smeared between three grading shields and corresponding core respectively.
Preferably, the number of plies of the polytetrafluoroethylene tape winding is not less than 30 layers, and the thickness of polytetrafluoroethylene tape is not less than
4.5mm。
Preferably, in step s3, one layer of semi-conductive tape of every winding, smears silicone grease on the semi-conductive tape respectively
Layer；In at step S4, one layer of polytetrafluoroethylene tape of every winding smears silicone grease on the polytetrafluoroethylene (PTFE) band respectively
Layer.
Preferably, in step s 2, two A phase cores are symmetrical in the two sides of the two junction, and the two it
Between angle be 120 °, two B phase cores are symmetrical in the two sides of the two junction, and angle between the two is
120 °, two C phase cores are symmetrical in the two sides of the two junction, and angle between the two is 120 °.
Preferably, after completing step S5, prepare an insulating bar, after completing step S5, prepare an insulating bar, it is described exhausted
Arc groove there are three being set on the end face of edge bar one end, and the both ends of three arc grooves extend respectively to the outer of the insulating bar
Edge, and the central angle of three arc grooves is 120 °, and the insulating bar is vertically placed on to the junction of three-phase core, institute
The junction for stating the junction of A phase core, the junction of the B phase core and the C phase core is respectively contained in described in three
In arc groove.
Preferably, further include step S13: brushing waterproof protective layer carries out water-proofing treatment on the outside of the armor.
The interconnection method of 10kV three-core cable of the present invention removes existing electricity in the interim reconstruction and extension project of cable run
The junction of cable, the electricity for recycling original cable terminal to dock using the interconnection method of 10kV three-core cable of the present invention
Cable meet the requirements, it can be achieved that cable permanent docking, be not necessarily to sawed-off terminals；It needs to restore original method of operation, removes two
It can restore behind the junction of cable, avoid saving reconstruction cost because of loss caused by cutting stripping cable.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
A specific embodiment of the invention is shown in detail by following embodiment and its attached drawing.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is that the embodiment of the present invention completes the schematic diagram after step S1；
Fig. 2 is that the embodiment of the present invention completes the schematic diagram after step S2；
Fig. 3 is that the embodiment of the present invention completes the schematic diagram after step S4；
Fig. 4 is that the embodiment of the present invention completes the schematic diagram after step S5；
Fig. 5 is the scheme of installation of insulating bar described in the embodiment of the present invention；
Fig. 6 is that the embodiment of the present invention completes the schematic diagram after step S7；
Fig. 7 is that the embodiment of the present invention completes the schematic diagram after step S8；
Fig. 8 is that the embodiment of the present invention completes the schematic diagram after step S11.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Principles and features of the present invention are described below in conjunction with attached drawing 1-8, the given examples are served only to explain the present invention,
It is not intended to limit the scope of the present invention.The present invention is more specifically described by way of example referring to attached drawing in the following passage.Root
According to following explanation and claims, advantages and features of the invention will be become apparent from.It should be noted that attached drawing be all made of it is very simple
The form of change and use non-accurate ratio, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Referring to Fig.1-8, one embodiment of the invention is proposed, the interconnection method of 10kV three-core cable described in the present embodiment includes
Following steps:
Step S1. prepares two cables 100, and one end to be docked is respectively provided with terminals, every electricity on two cables 100
The terminals of cable 100 respectively include shielded layer ground wire 101, armor ground wire 102, A phase core, B phase core and C phase core,
Middle A phase core and C phase core are located at the two sides of the B phase core, the every corresponding shielded layer ground wire 101 of cable 100, armor
Ground wire 102, A phase core, B phase core and C phase core end be separately installed with line nose；
Step S2. is inserted into A phase core, B phase core and C phase core pair on the basis of step S1, by three bolts respectively
In the nose inner hole for the two line noses answered, three bolts pass through nut respectively mutually compresses its corresponding two line nose；
Two A phase cores are symmetrical in the two sides of the two junction, and angle between the two is 120 °, two B phases
Core is symmetrical in the two sides of the two junction, and angle between the two is 120 °, and two C phase cores connect in the two
The two sides for meeting place are symmetrical, and angle between the two is 120 °；
Step S3. is provide with grading shield on the basis of step S2, in the periphery of every phase core junction respectively, and exists respectively
Semi-conductive tape is wound on each grading shield；And each semi-conductive tape is respectively from one end of corresponding grading shield to the other end with half
The mode of overlapping winds one back and forth；
Step S4. winds polytetrafluoroethyl-ne between two major insulation of isopen core respectively on the basis of step S3
Alkene band, and each polytetrafluoroethylene tape is respectively from a wherein core to another core with phase with half weight
Folded mode winds one back and forth；
It is exhausted that step S5. winds waterproof on the basis of step S4, respectively between the incision position of the tri-finger stall of isopen core
Marginal zone carries out insulation processing, and each waterproof insulation band from a core to another core with phase with half
The mode of overlapping winds one back and forth, to increase the waterproof performance of three-phase core, equably smears in the periphery of waterproof insulation band
Silicone grease, to fill the gap of waterproof insulation band, to guarantee the waterproof performance of three-phase core；
Step S6. is wound between the incision position of the tri-finger stall of the both threads core of same phase respectively on the basis of step S5
Inviscid adhesive waterproof tape carries out water-proofing treatment；
Step S7. is wound between the incision position of two cable tri-finger stalls inviscid respectively on the basis of step S6
Plastic tape, and fixed with PVC tape；
Bolt is inserted into the nose inner hole of two shielded layer ground wires 101 by step S8. on the basis of step S7,
And mutually compress the line nose of two shielded layer ground wires 101 on bolt by nut；Bolt is inserted into described in two
In the nose inner hole of armor ground wire 102, and the line nose of two armor ground wires 102 phase on bolt is made by nut
Mutually compress；
Step S9. is on the basis of step S8, between one end that two shielded layer ground wires 101 are located remotely from each other and two
Waterproof insulation band is wound between one end that armor ground wire 102 is located remotely from each other described in root respectively and carries out insulation processing；The shielding
The corresponding waterproof insulation band of layer ground wire 101 from the wherein one shielded layer ground wire 101 to another shielded layer
Line 101 winds one back and forth in such a way that half is overlapped, and the corresponding waterproof insulation band of the armor ground wire 102 is by wherein one
Armor ground wire 102 described in root winds one back and forth in such a way that half is overlapped to another armor ground wire 102；
Step S10. is twined between one end for being located remotely from each other of ground wire of two cables 100 on the basis of step S9
Around inviscid plastic tape；
Step S11. winds waterproof between one end that two tri-finger stalls are located remotely from each other on the basis of step S10
Adhesive tape carries out water-proofing treatment；And the adhesive waterproof tape is by another of the one end of cable earth wire far from another cable institute
It states cable and winds two back and forth in such a way that half is overlapped；
Step S12. winds armouring between one end that two tri-finger stalls are located remotely from each other on the basis of step S11
Layer completes the docking of two cables 100.
The interconnection method of 10kV three-core cable of the present invention connects the core with phase using screw bolt and nut, and in 10kV
The junction of three-core cable terminals successively winds semi-conductive tape, polytetrafluoroethylene tape, waterproof insulation band, adhesive waterproof tape and without viscous
Property plastic tape, and in ground wire and three-phase core periphery winding waterproof insulation band, inviscid plastic tape, adhesive waterproof tape and armouring
Layer guarantees that the electric property of two 100 junctions of cable is greater than the dielectric strength of 100 ontology of cable, while guaranteeing two electricity
100 junction of cable has good waterproofness, provides armor conduct for the junction of two 100 terminals of cable in step S9
The protection of mechanical force, so that the junction of 100 terminals of cable meets the requirements.
It is met the requirements using two cables 100 that the interconnection method of 10kV three-core cable of the present invention docks, in cable
In the interim reconstruction and extension project of route, the terminals of original cable 100 are removed, recycle original cable terminal and use this hair
The interconnection method of the bright 10kV three-core cable can dock two cables 100, and can realize the permanent docking of cable 100, nothing
Sawed-off terminals are needed, when needing to restore original method of operation, the junction for cutting decorticating work can restore, and avoid because cutting stripping electricity again
Cable 100 and caused by lose, save cost.
Preferably, it after completing step S1, is finely polished with corner of the sand paper to each line nose, so that line nose
Corner it is mellow and full；
When speckling with spot and non-wiped clean on line nose, the spot on line nose can remove by sand paper polishing, with
The spot of line nose is avoided to influence the electric conductivity of line nose.
The sand paper is the high aluminum oxide sand paper of resistance, to guarantee the performance of line nose.
Preferably, it after completing step S2, is polished with sand paper the tip of each screw bolt and nut and corner angle, is avoided
Electric field stress concentration causes line nose, screw bolt and nut point discharge.
Preferably, each grading shield respectively includes two cone-shaped hoods, described in each grading shield is two corresponding
The cone bottom surface of cone-shaped hood is bonded to each other, the central axes of corresponding two cone-shaped hoods of the B phase core on same straight line,
Angle of the central axes of corresponding two cone-shaped hoods of the A phase core between the side of two B phase cores be
120 °, folder of the central axes of corresponding two cone-shaped hoods of the C phase core between the side of two B phase cores
Angle is 120 °, and corresponding two cone-shaped hoods of the A phase core and corresponding two cone-shaped hoods pair of the C phase core
Claim the two sides for being distributed in the B phase core.
The grading shield is made of metal material, and grading shield is located at core periphery, make each grading shield with it is corresponding
Core current potential it is consistent, prevent air suspension from discharging.
Preferably, each cone-shaped hood respectively includes two arc groove bodies, and two arc groove bodies are respectively sleeved at
On the corresponding core and the cone-shaped hood is pieced together, and the semi-conductive tape by winding keeps each cone-shaped hood corresponding
Two arc groove body splits.
Uniform silicone grease layer is smeared between three grading shields and three-phase core again, silicone grease fills gap, to prevent gap
Shelf depreciation and air suspension electric discharge.
Preferably, in step s 4, the thickness of polytetrafluoroethylene tape is not less than 4.5mm, the layer of polytetrafluoroethylene tape winding
Number is not less than 30 layers, and the reinforcement of electric stress is carried out with the terminal to every phase battery core, and enhances the resistance of every phase battery core unit volume
Dielectric strength, it is ensured that the piece electrical dielectric strength of junction is greater than 1.5 times of 100 ontology dielectric strength of cable, to eliminate
Electric field stress due to caused by the not isometrical and out-of-flatness of electrical connection axially and radially.
In step s 4, at its major insulation of the both threads core of same phase is located remotely from each other a lateral extent between the position of 50mm
Wind polytetrafluoroethylene tape.
Preferably, in step s3, one layer of semi-conductive tape of every winding, smears silicone grease on the semi-conductive tape respectively
Layer；In step s 4, one layer of polytetrafluoroethylene tape of every winding smears silicone grease layer on the polytetrafluoroethylene (PTFE) band respectively.
Silicone grease can fill the gap between semi-conductive tape, polytetrafluoroethylene tape respectively, with prevent gap shelf depreciation and
Air suspension electric discharge.
Preferably, after completing step S4, the both threads core with phase is in the taper that cone bottom end is bonded to each other；After step S5,
The taper being bonded to each other with the both threads core of phase in cone bottom end；After completing step S6, the both threads core with phase is mutual in cone bottom end
The taper of fitting, and the angle between two A phase cores is 120 °, the angle between two C phase cores is 120 °,
Two B phase cores are on same straight line.
The polytetrafluoroethylene tape of each taper constitutes stress cone on the corresponding core respectively, improves absolutely
The field distribution of edge shielded layer, reduces the destruction of insulation, to ensure that the safe operation of cable run.
Preferably, after completing step S6, prepare an insulating bar 1, after completing step S5, prepare an insulating bar 1, it is described
Arc groove there are three being set on 1 one end end face of insulating bar, and the both ends of three arc grooves extend respectively to the insulating bar 1
Outer rim, and the central angle of three arc grooves is 120 °, and the insulating bar 1 is vertically placed on to the connection of three-phase core
Place, the junction of the junction of the A phase core, the junction of the B phase core and the C phase core is respectively contained in three
In the arc groove.
The A phase core, the B phase core and the C phase core are respectively contained in three arc grooves and fix,
Making the junction of 100 terminals of cable will not be deformed under by external force, to guarantee the A phase core, the B phase line
Angle and position between core and the C phase core, prevent phase insulation from damaging, and guarantee that the vector sum of three-phase core alternating current is
Zero；The insulating bar 1 increases the electrical insulation strength between three-phase core simultaneously.
The insulating bar 1 is made of wood materials, between shape and A phase core and B phase core, the B phase core with
The shape in gap matches between the C phase core.
After completing step S6, the both threads core with phase in the taper that is bonded to each other of cone bottom end, A phase core and B phase core it
Between with taper gap, between the B phase core and the C phase core with taper gap.
After placing insulating bar 1, high-voltage isulation band is wound in the tri-finger stall incision position of two cables 100, to enhance electricity
Gas dielectric strength guarantees the stability of 1 structure of insulating bar.
Preferably, after completing step S8, with sand paper to each bolt on shielded layer ground wire 101 and armor ground wire 102
It polishes with the tip of nut and corner angle, keeps the tip of each screw bolt and nut and corner angle smooth, electric field stress is avoided to concentrate
Cause line nose, screw bolt and nut point discharge.
Preferably, in step S2 and S8, the length of bolt is selected according to the thickness in the nose aperture of each line nose and hole
Degree makes the both ends of each bolt stretch out corresponding 1-2 screw thread of the line nose inner hole, to guarantee each bolt pair
The nut answered two line noses will compress thereon, thus guarantee that two line noses on each bolt mutually compress,
Guarantee passing through for high current.
Preferably, in step slo, one end that the ground wire of two cables is located remotely from each other respectively away from its 30mm between twine
Around inviscid adhesive waterproof tape, to restore the waterproof layer of 100 ground wire of cable.
In step slo, the waterproof insulation band makes two cables have four layers of fine and close waterproof layer, has excellent
Waterproof performance.
Preferably, further include step S13: on the outside of the armor brushing waterproof protective layer carry out water-proofing treatment, with into
The waterproof performance of one step guarantee transition joint.
Ac voltage withstanding test examination is carried out at 46kV to using two 10kV three-core cables after the docking of above-mentioned interconnection method
Test 30min, not flashover, do not puncture；Two 10kV three-core cables after docking carry out DC break down voltage testing experiment at 65kV
30min, Leakage Current be less than or equal to 1 μ A, not flashover, do not puncture；Two 10kV three-core cables after docking are in 1.73U0Under into
The test of row shelf depreciation, partial discharge quantity 1-2pC；Carry out shock-testing in the case where exchanging 105kV, not flashover, do not puncture, do not put
Electricity, after testing experiment, stripping cable connector, observation cable terminal does not find electric discharge phenomena.
By above-mentioned test result it is found that the terminals of two cables after the interconnection method docking connect through the invention
The electric property at the place of connecing is significantly larger than power cable test standard.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the present invention in any form；It is all
The those of ordinary skill of the industry can be shown in by specification attached drawing and described above and swimmingly implement the present invention；But it is all
Those skilled in the art without departing from the scope of the present invention, are done using disclosed above technology contents
The equivalent variations of a little variation, modification and evolution out is equivalent embodiment of the invention；Meanwhile it is all according to the present invention
The variation, modification and evolution etc. of substantial technological any equivalent variations to the above embodiments, still fall within skill of the invention
Within the protection scope of art scheme.
Claims (10)
1. a kind of interconnection method of 10kV three-core cable, which comprises the following steps:
Step S1. prepares two cables (100), and one end to be docked is respectively provided with terminals, every electricity on two cables (100)
The terminals of cable (100) respectively include shielded layer ground wire (101), armor ground wire (102), A phase core, B phase core and C phase line
Core, wherein A phase core and C phase core are located at the two sides of the B phase core, the corresponding shielded layer ground wire of every cable (100)
(101), the end of armor ground wire (102), A phase core, B phase core and C phase core is separately installed with line nose；
It is corresponding that step S2. is inserted into A phase core, B phase core and C phase core on the basis of step S1, by three bolts respectively
In the nose inner hole of two line noses, three bolts pass through nut respectively mutually compresses its corresponding two line nose；
Step S3. is provide with grading shield on the basis of step S2, in the periphery of every phase core junction respectively, and respectively each
Semi-conductive tape is wound on grading shield；
Step S4. winds polytetrafluoroethylene tape between two major insulation of isopen core respectively on the basis of step S3；
Step S5. winds waterproof insulation band on the basis of step S4 between the incision position of the tri-finger stall of isopen core respectively
Carry out insulation processing；
Step S6. on the basis of step S5, respectively between the incision position of the tri-finger stall of isopen core wind adhesive waterproof tape into
Row water-proofing treatment；
Step S7. winds inviscid plastics on the basis of step S6 between the incision position of two cable tri-finger stalls respectively
Band；
Bolt is inserted into the nose inner hole of two shielded layer ground wires (101) by step S8. on the basis of step S7, and
The line nose of two shielded layer ground wires (101) is mutually compressed on bolt by nut；Bolt is inserted into described in two
In the nose inner hole of armor ground wire (102), and make the line nose of two armor ground wires (102) in bolt by nut
On mutually compress；
Step S9. is on the basis of step S8, between one end that two shielded layer ground wires (101) are located remotely from each other and two
Waterproof insulation band is wound between one end that the armor ground wire (102) is located remotely from each other respectively and carries out insulation processing；
Step S10. on the basis of step S9, one end that two shielded layer ground wires (101) of two cables are located remotely from each other it
Between wind inviscid plastic tape；
Step S11. winds adhesive waterproof tape between one end that two tri-finger stalls are located remotely from each other on the basis of step S10
Carry out water-proofing treatment；
Step S12. winds armor between one end that two tri-finger stalls are located remotely from each other on the basis of step S11.
2. the interconnection method of 10kV three-core cable according to claim 1, which is characterized in that after completing step S1, use sand
Paper is round and smooth to the corner polishing of each line nose.
3. the interconnection method of 10kV three-core cable according to claim 1, which is characterized in that each grading shield difference
Including two cone-shaped hoods, the cone bottom surface of corresponding two cone-shaped hoods of each grading shield is bonded to each other.
4. the interconnection method of 10kV three-core cable according to claim 3, which is characterized in that each cone-shaped hood difference
Including two arc groove bodies, two arc groove bodies are respectively sleeved on the corresponding core and piece together the taper
Cover.
5. the interconnection method of 10kV three-core cable according to claim 4, which is characterized in that described pressed at three respectively
It covers and smears silicone grease layer between corresponding core.
6. the interconnection method of 10kV three-core cable according to claim 1, which is characterized in that the polytetrafluoroethylene tape twines
Around the number of plies be not less than 30 layers, the thickness of polytetrafluoroethylene tape is not less than 4.5mm.
7. the interconnection method of 10kV three-core cable according to claim 1, which is characterized in that in step s3, every winding
One layer of semi-conductive tape smears silicone grease layer on the semi-conductive tape respectively；In step s 4, every one layer described poly- four of winding
Vinyl fluoride band smears silicone grease layer on the polytetrafluoroethylene (PTFE) band respectively.
8. the interconnection method of 10kV three-core cable according to claim 1-7, which is characterized in that in step S2
In, two A phase cores are symmetrical in the two sides of the two junction, and angle between the two is 120 °, two B
Phase core is symmetrical in the two sides of the two junction, and angle between the two is 120 °, and two C phase cores are in the two
The two sides of junction are symmetrical, and angle between the two is 120 °.
9. the interconnection method of 10kV three-core cable according to claim 8, which is characterized in that after completing step S5, prepare
A piece insulating bar (1), sets that there are three arc grooves, and the both ends of three arc grooves point on insulating bar (1) one end end face
The outer rim of the insulating bar (1) is not extended to, and the central angle of three arc grooves is 120 °, by the insulating bar (1)
Vertically it is placed on the junction of three-phase core, the junction of the A phase core, the junction of the B phase core and the C phase line
The junction of core is respectively contained in three arc grooves.
10. the interconnection method of 10kV three-core cable according to claim 1, which is characterized in that further include step S13:
Brushing waterproof protective layer carries out water-proofing treatment on the outside of the armor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910243903.5A CN110011232B (en) | 2019-03-28 | 2019-03-28 | Butting method of 10kV three-core cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910243903.5A CN110011232B (en) | 2019-03-28 | 2019-03-28 | Butting method of 10kV three-core cable |
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| CN110011232B CN110011232B (en) | 2020-09-25 |
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| CN205681090U (en) * | 2016-06-16 | 2016-11-09 | 北京首都机场动力能源有限公司 | A kind of multicore cable shrinkage full casting type transition joint |
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