CN105552791B - A kind of preparation method of the core twisted polyethylene cable transition joint of 10KV pyrocondensations three - Google Patents
A kind of preparation method of the core twisted polyethylene cable transition joint of 10KV pyrocondensations three Download PDFInfo
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- CN105552791B CN105552791B CN201510903142.3A CN201510903142A CN105552791B CN 105552791 B CN105552791 B CN 105552791B CN 201510903142 A CN201510903142 A CN 201510903142A CN 105552791 B CN105552791 B CN 105552791B
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- 230000007704 transition Effects 0.000 title claims abstract description 31
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 13
- -1 polyethylene Polymers 0.000 title claims abstract description 13
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 48
- 239000010949 copper Substances 0.000 claims abstract description 48
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000000853 adhesive Substances 0.000 claims abstract description 25
- 239000002390 adhesive tape Substances 0.000 claims abstract description 22
- 230000001070 adhesive effect Effects 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 7
- 230000035882 stress Effects 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 24
- 238000004804 winding Methods 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 20
- 230000004888 barrier function Effects 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000006071 cream Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000008642 heat stress Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Abstract
The present invention relates to a kind of preparation method of the core twisted polyethylene cable transition joint of 10kV pyrocondensations three, comprise the following steps, S1 cuts cable to direct join, S2 divests external sheath layer and armouring, S3 divests inner restrictive coating and filler layer, S4 divests copper shield and outer semiconductive layer, S5 fixed stress pipes, S6 sleeve pipes, S7 crimps connecting tube, S8 wraps half conduction band, S9 wrapping filling adhesive tapes, S10：Fixed multiple tube, S11：Wrap adhesive waterproof tape, S12：Wrap semi-conductive tape, S13：The conductive wedge rod of Rhizoma Sparganii, S14 are installed：Copper shield net and ground wire, S15 are installed：Fixing seal protecting pipe.Using transition joint made from this method, the appearance of micro gap or hole can be prevented effectively from, the safety coefficient of transition joint is greatly improved.
Description
Technical field
The invention belongs to the manufacture craft field of power cable connector, it is related to a kind of manufacture craft of cable intermediate joint,
Especially a kind of preparation method of the core twisted polyethylene cable transition joint of 10kV pyrocondensations three；By in made from this method indirectly
Head is prevented effectively from the possibility of the generation of micro gap and hole, fully reduction transition joint infiltration, and security performance is obviously improved.
Background technology
Power cable is indispensable element in electric power system, and the security performance of power cable not only concerns electrical equipment
Normal operation, it is and same most important for the life security of staff.
The power cable of electric power system is present by various extraneous factors（Such as mechanical force）The possibility of destruction, causes cable
The use of transition joint inevitably increases.Due to the own service level and site environment of cable intermediate joint producer
The influence of factor, the cable with transition joint come into operation is possible to because making moist, by external force, the destruction of itself stress and
Occurs the failure of short circuit or ground connection, it is impossible to ensure the normal operation of electrical equipment and the personal safety of staff.
China started to apply domestic isolating shrinkable material and technology into the making in intermediate joint of electric cable in 1987
On, domestic isolating shrinkable material has the usage history of nearly 30 years so far, and its fabrication and installation technique does not have big improvement always, to tide
Using the cable intermediate joint of operation under wet, ponding environmental condition, manufacture craft has no particular/special requirement
Cable intermediate joint is constructed according to original technological standards, and the operation starting stage is safe and feasible.But with electricity
Cable transition joint long-play in the environment for having ponding or humidity, adds former manufacture craft not to cable metal material
The influence of stress carries out early stage processing, while because of cable long term overloading, surrounding occur for the major insulation material of transition joint
The insulation ag(e)ing that the reasons such as environment temperature rise, instantaneous short-circuit are caused is single or collective effect under, the insulating materials that causes and close
Closure sleeve pipe material ageing, its material property changes, and is formed after micro gap or hole, the transition joint moisture absorption and intake,
Easily cause the accident.This is the deficiencies in the prior art part.
Therefore it provides a kind of preparation method of the core twisted polyethylene cable transition joint of 10kV pyrocondensations three is designed, to solve
Above-mentioned technical problem, is necessary.
The content of the invention
It is an object of the present invention to be directed to present in above-mentioned prior art because cable intermediate joint is by moist or product
The influence of water environment and there is micro gap or hole, then cause power cable can not normal work and staff people
There is provided design a kind of making side of the core twisted polyethylene cable transition joint of 10kV pyrocondensations three for the defect that body can not ensure safely
Method, to solve above-mentioned technical problem, it is to avoid the generation of micro gap and hole, so as to improve the security performance of transition joint.
To achieve the above object, the present invention provides following technical scheme：
A kind of preparation method of the core twisted polyethylene cable transition joint of 10kV pyrocondensations three, comprises the following steps：
S1：Cable is cut to direct join, two cables for doing transition joint eliminated after its own metal stress respectively, by two
Cable 200-300mm overlapping to direct join, determines transition joint center and aligns cable core, then cut off two in central spot
Cable；
S2：External sheath layer and armouring are divested, the size for divesting external sheath layer is measured according to real needs, external sheath layer is divested
To expose armouring, the length that two cables divest external sheath layer is different, is tied up on the armouring at external sheath layer fracture 50mm
Copper wiring is pricked, and remaining armouring is divested, exposes inner restrictive coating；
S3：Inner restrictive coating and filler are divested, is retained close to the inner restrictive coating wide 20mm of copper wiring, divests in remaining and protects
Jacket layer and filler, expose copper shield；
S4：Copper shield and outer semiconductive layer are divested, is respectively measured to two ends cable core along central point described in step S1
The core length of 230mm length, divests copper shield to expose outer semiconductive layer, reservation is apart from the 15mm length of copper shield fracture side
Outer semiconductive layer, by its besides semiconductive layer divest, expose core insulating barrier, then remove the burr of each phase line and be polished flat
It is sliding, remove the semiconductive matter of core surface of insulating layer, and with being dried after washes of absolute alcohol two to three times；
S5：Fixed stress pipe, is inserted in stress tube in each phase line of two cables, and stress tube covers exposed outer partly lead
Layer, and copper shield 25mm is overlapped, heating stress tube is fixed；
S6：Sleeve pipe, is inserted in first segment sealing sheath pipe in the one end for divesting the longer cable of external sheath layer, and by the cable
Every phase cored wire on be inserted in multiple tube and copper shield net, be then inserted in second section in the one end for divesting the shorter cable of external sheath layer
Sealing sheath pipe；
S7：Connecting tube is crimped, the metal stresses per phase cored wire is eliminated, 1/2 connecting tube pipe range is measured in cored wire end and is added again
The core insulating barrier of 5mm length, and being divested, exposes core, from the incision position of core insulating barrier to the direction of copper shield
The core insulating barrier of 35mm length is measured, and is whittled into the cone of 30mm length, exposes 5mm length in the side close to cored wire end
Interior semiconductive layer, crimps connecting tube；
S8：Half conduction band is wrapped, half conduction band is wound in connecting tube, and be fully connected with the interior semiconductive layer at two ends；
S9：Wrapping filling adhesive tape and insulating self-adhesive band, the first wrapping filling adhesive tape between the cone of two end cables；Wrap again
Winding is taken in 10kV insulating self-adhesive bands, stretching 200% half, overlaps the thickness of core insulating barrier 20-25mm, 10kV insulating self-adhesive band winding
Degree is not less than 3mm；
S10：Fixed multiple tube, it is uniform on the core insulating barrier of each phase cored wire to smear silicone grease cream, silicone grease layer of paste is formed, so
Multiple tube is enclosed between the stress tube of two ends afterwards, by multiple tube from centre to both sides heat shrink to fixation
S11：Adhesive waterproof tape is wrapped, adhesive waterproof tape is wrapped at the step of multiple tube two ends, multiple tube 15mm is overlapped, makes step
Into seamlessly transitting；
S12：Wrap semi-conductive tape, on adhesive waterproof tape half lap scarf joint wrap semi-conductive tape, two ends respectively overlap copper shield and
Multiple tube 30mm, then wrapping water-proof seal adhesive tape overlaps multiple tube 40mm again, then partly takes coiled composite tube with plastic colloidal cloth
Two ends, each overlap joint copper shield and multiple tube 50mm；
S13：The conductive wedge rod of Rhizoma Sparganii is installed, the conductive wedge rod of Rhizoma Sparganii is placed in the middle of three-phase composite pipe, and is tied with cotton strap；
S14：Copper shield net and ground wire are installed, two ends copper shield is connected with copper shield net, end banding is welded, and respectively
Welding is per phase copper shield；Property-line, which curls up, tightens cored wire, and ground wire two ends are tightened on armouring to be welded；
S15：Fixing seal protecting pipe, each winding twice width on two cable socket external sheath layers is anti-not less than 40mm
Watertight sealed adhesive tape, is not less than after the heating of first segment cable seal sleeve pipe first is finished into cooling in its proximal end surface winding width
25mm, spacing is not less than 45mm water-proof seal adhesive tape twice, then second section sealing sheath pipe is shunk into fixation, sealing sheath pipe
150mm is overlapped with cable outer layer, heating is fixed, and winds adhesive waterproof tape after cooling respectively at sealing sheath pipe two ends, form smooth
Cone, thickness is not less than 4mm, and spliced cables crust and sealing sheath pipe are not less than 30mm respectively, with high-voltage isulation self-adhesive tape half
Three to five layers of winding is taken, spliced cables crust and sealing sheath pipe are not less than 50mm respectively, finally with the PVC tape of conspicuous color
Three layers of winding is partly taken, spliced cables crust and sealing sheath pipe are not less than 70mm respectively.
Preferably, itself internal stress for eliminating two cables with the following method is adopted in described step S1：
Using heating tape or heating blanket by electric cable heating to 60 degree, and kept for 180 minutes.
Preferably, in described step S9, the thickness of 10kV insulating self-adhesive band windings is 5mm.
Preferably, the thickness of smooth cone is 5mm in described step S15.
Preferably, in described step S15, it is 30mm, spacing that the heating of cable seal sleeve pipe, which finishes winding width after cooling,
For 50mm water-proof seal adhesive tape twice.
The beneficial effects of the present invention are, using transition joint made from this method, can be prevented effectively from micro gap or
The appearance of person's hole, greatly improves the safety coefficient of transition joint.In addition, design principle of the present invention is reliable, with very
It is widely applied prospect.
As can be seen here, the present invention compared with prior art, improves with prominent substantive distinguishing features and significantly, and it is implemented
Beneficial effect be also obvious.
Brief description of the drawings
Fig. 1 is the structural representation that cable of the present invention is divested.
Wherein, 1- external sheath layers, 2- armourings, 3- inner restrictive coatings, 4- copper shields, the outer semiconductive layers of 5-, 6- core insulating barriers,
Semiconductive layer in 7-, 8- cores.
Embodiment
Below in conjunction with the accompanying drawings and the present invention will be described in detail by specific embodiment, following examples are to the present invention
Explanation, and the invention is not limited in implementation below.
Fig. 1 gives the structural representation that cable of the present invention is divested.
The present embodiment provides a kind of preparation method of the core twisted polyethylene cable transition joint of 10kV pyrocondensations three, including as follows
Step：
S1：Cable is cut to direct join, two cables for doing transition joint eliminated after its own metal stress respectively, by two
Cable 200-300mm overlapping to direct join, determines transition joint center and aligns cable core, then cut off two in central spot
Cable；
S2：External sheath layer and armouring are divested, the size for divesting external sheath layer is measured according to real needs, external sheath layer is divested
To expose armouring, the length that two cables divest external sheath layer is different, is tied up on the armouring at external sheath layer fracture 50mm
Copper wiring is pricked, and remaining armouring is divested, exposes inner restrictive coating；
S3：Inner restrictive coating and filler are divested, is retained close to the inner restrictive coating wide 20mm of copper wiring, divests in remaining and protects
Jacket layer and filler, expose copper shield；
S4：Copper shield and outer semiconductive layer are divested, is respectively measured to two ends cable core along central point described in step S1
The core length of 230mm length, divests copper shield to expose outer semiconductive layer, reservation is apart from the 15mm length of copper shield fracture side
Outer semiconductive layer, by its besides semiconductive layer divest, expose core insulating barrier, then remove the burr of each phase line and be polished flat
It is sliding, remove the semiconductive matter of core surface of insulating layer, and with being dried after washes of absolute alcohol two to three times；
S5：Fixed stress pipe, is inserted in stress tube in each phase line of two cables, and stress tube covers exposed outer partly lead
Layer, and copper shield 25mm is overlapped, heating stress tube is fixed；
S6：Sleeve pipe, is inserted in first segment sealing sheath pipe in the one end for divesting the longer cable of external sheath layer, and by the cable
Every phase cored wire on be inserted in multiple tube and copper shield net, be then inserted in second section in the one end for divesting the shorter cable of external sheath layer
Sealing sheath pipe；
S7：Connecting tube is crimped, the metal stresses per phase cored wire is eliminated, 1/2 connecting tube pipe range is measured in cored wire end and is added again
The core insulating barrier of 5mm length, and being divested, exposes core, from the incision position of core insulating barrier to the direction of copper shield
The core insulating barrier of 35mm length is measured, and is whittled into the cone of 30mm length, exposes 5mm length in the side close to cored wire end
Interior semiconductive layer, crimps connecting tube；
S8：Half conduction band is wrapped, half conduction band is wound in connecting tube, and be fully connected with the interior semiconductive layer at two ends；
S9：Wrapping filling adhesive tape and insulating self-adhesive band, the first wrapping filling adhesive tape between the cone of two end cables；Wrap again
Winding is taken in 10kV insulating self-adhesive bands, stretching 200% half, overlaps the thickness of core insulating barrier 20-25mm, 10kV insulating self-adhesive band winding
Degree is not less than 3mm；
S10：Fixed multiple tube, it is uniform on the core insulating barrier of each phase cored wire to smear silicone grease cream, silicone grease layer of paste is formed, so
Multiple tube is enclosed between the stress tube of two ends afterwards, by multiple tube from centre to both sides heat shrink to fixation
S11：Adhesive waterproof tape is wrapped, adhesive waterproof tape is wrapped at the step of multiple tube two ends, multiple tube 15mm is overlapped, makes step
Into seamlessly transitting；
S12：Wrap semi-conductive tape, on adhesive waterproof tape half lap scarf joint wrap semi-conductive tape, two ends respectively overlap copper shield and
Multiple tube 30mm, then wrapping water-proof seal adhesive tape overlaps multiple tube 40mm again, then partly takes coiled composite tube with plastic colloidal cloth
Two ends, each overlap joint copper shield and multiple tube 50mm；
S13：The conductive wedge rod of Rhizoma Sparganii is installed, the conductive wedge rod of Rhizoma Sparganii is placed in the middle of three-phase composite pipe, and is tied with cotton strap；
S14：Copper shield net and ground wire are installed, two ends copper shield is connected with copper shield net, end banding is welded, and respectively
Welding is per phase copper shield；Property-line, which curls up, tightens cored wire, and ground wire two ends are tightened on armouring to be welded；
S15：Fixing seal protecting pipe, each winding twice width on two cable socket external sheath layers is anti-not less than 40mm
Watertight sealed adhesive tape, is not less than after the heating of first segment cable seal sleeve pipe first is finished into cooling in its proximal end surface winding width
25mm, spacing is not less than 45mm water-proof seal adhesive tape twice, then second section sealing sheath pipe is shunk into fixation, sealing sheath pipe
150mm is overlapped with cable outer layer, heating is fixed, and winds adhesive waterproof tape after cooling respectively at sealing sheath pipe two ends, form smooth
Cone, thickness is not less than 4mm, and spliced cables crust and sealing sheath pipe are not less than 30mm respectively, with high-voltage isulation self-adhesive tape half
Three to five layers of winding is taken, spliced cables crust and sealing sheath pipe are not less than 50mm respectively, finally with the PVC tape of conspicuous color
Three layers of winding is partly taken, spliced cables crust and sealing sheath pipe are not less than 70mm respectively.
In the present embodiment, " near-end " described in step S15 refers to close to one end of transition joint.
In the present embodiment, itself internal stress for eliminating two cables with the following method is adopted in described step S1：
Using heating tape or heating blanket by electric cable heating to 60 degree, and kept for 180 minutes.
In the present embodiment, in described step S9, the thickness of 10kV insulating self-adhesive band windings is 5mm.
In the present embodiment, the thickness of smooth cone is 5mm in described step S15.
In the present embodiment, in described step S15, it is 30mm that the heating of cable seal sleeve pipe, which finishes winding width after cooling,
Spacing is 50mm water-proof seal adhesive tape twice.
Disclosed above is only the preferred embodiment of the present invention, but the present invention is not limited to this, any this area
What technical staff can think does not have a creative change, and some improvement made without departing from the principles of the present invention and
Retouching, should all be within the scope of the present invention.
Claims (5)
1. a kind of preparation method of the core twisted polyethylene cable transition joint of 10kV pyrocondensations three, comprises the following steps：
S1：Cable is cut to direct join, two cables for doing transition joint eliminated after its own metal stress respectively, by two cables
200-300mm overlapping to direct join, determines transition joint center and aligns cable core, then cuts off two electricity in central spot
Cable；
S2：External sheath layer and armouring are divested, the size for divesting external sheath layer is measured according to real needs, divests external sheath layer to reveal
Go out armouring, the length that two cables divest external sheath layer is different, the colligation copper on the armouring at external sheath layer fracture 50mm
Wiring, and remaining armouring is divested, expose inner restrictive coating；
S3：Inner restrictive coating and filler are divested, retains close to the inner restrictive coating wide 20mm of copper wiring, divests remaining inner restrictive coating
And filler, expose copper shield；
S4：Copper shield and outer semiconductive layer are divested, 230mm length is respectively measured along central point described in step S1 to two ends cable core
Core length, divest copper shield to expose outer semiconductive layer, retain the outer of 15mm length apart from copper shield fracture side and partly lead
Layer, by its besides semiconductive layer divest, expose core insulating barrier, then remove the burr of each phase line and polish smooth, remove
The semiconductive matter of core surface of insulating layer, and with being dried after washes of absolute alcohol two to three times；
S5：Fixed stress pipe, is inserted in stress tube in each phase line of two cables, and stress tube covers exposed outer semiconductive layer, and
And overlap joint copper shield 25mm, heat stress tube and be fixed；
S6：Sleeve pipe, is inserted in first segment sealing sheath pipe in the one end for divesting the longer cable of external sheath layer, and by the every of the cable
Multiple tube and copper shield net are inserted on phase cored wire, second section sealing is then inserted in the one end for divesting the shorter cable of external sheath layer
Protecting pipe；
S7：Connecting tube is crimped, the metal stresses per phase cored wire is eliminated, 1/2 connecting tube pipe range is measured in cored wire end and adds 5mm length again
The core insulating barrier of degree, and divested, expose core, measured from the incision position of core insulating barrier to the direction of copper shield
The core insulating barrier of 35mm length, and the cone of 30mm length is whittled into, expose in the side close to cored wire end half in 5mm length
Conducting shell, crimps connecting tube；
S8：Half conduction band is wrapped, half conduction band is wound in connecting tube, and be fully connected with the interior semiconductive layer at two ends；
S9：Wrapping filling adhesive tape and insulating self-adhesive band, the first wrapping filling adhesive tape between the cone of two end cables；10kV is wrapped again
Winding is taken in insulating self-adhesive band, stretching 200% half, overlaps the thickness of core insulating barrier 20-25mm, 10kV insulating self-adhesive band winding not
Less than 3mm；
S10：Fixed multiple tube, it is uniform on the core insulating barrier of each phase cored wire to smear silicone grease cream, silicone grease layer of paste is formed, then will
Multiple tube is enclosed between the stress tube of two ends, by multiple tube from centre to both sides heat shrink to fixation；
S11：Adhesive waterproof tape is wrapped, adhesive waterproof tape is wrapped at the step of multiple tube two ends, multiple tube 15mm is overlapped, makes step Cheng Ping
Slip over and cross；
S12：Semi-conductive tape is wrapped, half lap scarf joint wraps semi-conductive tape on adhesive waterproof tape, and two ends respectively overlap copper shield and compound
Pipe 30mm, then wrapping water-proof seal adhesive tape overlap joint multiple tube 40mm again, then partly take with plastic colloidal cloth coiled composite tube two ends,
Each overlap joint copper shield and multiple tube 50mm；
S13：The conductive wedge rod of Rhizoma Sparganii is installed, the conductive wedge rod of Rhizoma Sparganii is placed in the middle of three-phase composite pipe, and is tied with cotton strap；
S14：Copper shield net and ground wire are installed, two ends copper shield is connected with copper shield net, end banding is welded, and is respectively welded
Per phase copper shield；Property-line, which curls up, tightens cored wire, and ground wire two ends are tightened on armouring to be welded；
S15：Fixing seal protecting pipe, each winding twice width on two cable socket external sheath layers is not less than 40mm anti-watertight
Sealed adhesive tape, first finishes the heating of first segment cable seal sleeve pipe after cooling in its proximal end surface winding width not less than 25mm,
Fixation, sealing sheath pipe and cable are shunk away from the water-proof seal adhesive tape twice not less than 45mm, then by second section sealing sheath pipe
Outer layer overlaps 150mm, and heating is fixed, and winds adhesive waterproof tape after cooling respectively at sealing sheath pipe two ends, forms smooth cone, thick
Degree is not less than 4mm, and spliced cables crust and sealing sheath pipe are not less than 30mm respectively, and winding three is partly taken with high-voltage isulation self-adhesive tape
To five layers, spliced cables crust and sealing sheath pipe are not less than 50mm respectively, finally partly take winding with the PVC tape of conspicuous color
Three layers, spliced cables crust and sealing sheath pipe are not less than 70mm respectively.
2. a kind of preparation method of the core twisted polyethylene cable transition joint of 10kV pyrocondensations three according to claim 1, its
It is characterised by：Itself internal stress for eliminating two cables with the following method is adopted in described step S1：
Using heating tape or heating blanket by electric cable heating to 60 degree, and kept for 180 minutes.
3. a kind of preparation method of the core twisted polyethylene cable transition joint of 10kV pyrocondensations three according to claim 1 or 2,
It is characterized in that：In described step S9, the thickness of 10kV insulating self-adhesive band windings is 5mm.
4. a kind of preparation method of the core twisted polyethylene cable transition joint of 10kV pyrocondensations three according to claim 3, its
It is characterised by：The thickness of smooth cone is 5mm in described step S15.
5. a kind of preparation method of the core twisted polyethylene cable transition joint of 10kV pyrocondensations three according to claim 4, its
It is characterised by：In described step S15, it is 30mm that the heating of cable seal sleeve pipe, which finishes winding width after cooling, and spacing is 50mm
Water-proof seal adhesive tape twice.
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| CN201510903142.3A CN105552791B (en) | 2015-12-09 | 2015-12-09 | A kind of preparation method of the core twisted polyethylene cable transition joint of 10KV pyrocondensations three |
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| CN201510903142.3A CN105552791B (en) | 2015-12-09 | 2015-12-09 | A kind of preparation method of the core twisted polyethylene cable transition joint of 10KV pyrocondensations three |
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| CN109066499A (en) * | 2018-08-31 | 2018-12-21 | 北部湾港防城港码头有限公司 | A kind of restorative procedure of multicore high-pressure heavy Plastic-sheathed Cable |
| CN109861141A (en) * | 2019-03-28 | 2019-06-07 | 国网江苏省电力有限公司徐州供电分公司 | A kind of production method of three-core cable transition joint |
| CN111029992A (en) * | 2019-12-04 | 2020-04-17 | 中国船舶重工集团公司第七一五研究所 | Cable water blocking method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200973011Y (en) * | 2006-11-13 | 2007-11-07 | 深圳市长园新材料股份有限公司 | Heat-shrinkable cable joint structure |
| CN100555784C (en) * | 2007-05-22 | 2009-10-28 | 宁波东方电缆股份有限公司 | A kind of preparation method of twisted polyethylene cable connecting hose |
| CN101465527A (en) * | 2008-12-12 | 2009-06-24 | 河南省电力公司信阳供电公司 | Method for first-aid repair of cable middle joint ground fault winding package |
| CN102570374B (en) * | 2012-03-27 | 2014-11-26 | 齐齐哈尔电业局 | Connecting method of lengthened 10kV thermal shrinkable three-core cross-linked polyethylene cable intermediate joint |
| CN103915811A (en) * | 2014-01-23 | 2014-07-09 | 汕头市南帆电器有限公司 | Method for manufacturing 35 kV thermal shrinkage intermediate cable head |
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