CN106655019B - A kind of 10-35KV cable intermediate joints shrinkage installation modified technique - Google Patents
A kind of 10-35KV cable intermediate joints shrinkage installation modified technique Download PDFInfo
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- CN106655019B CN106655019B CN201611044151.2A CN201611044151A CN106655019B CN 106655019 B CN106655019 B CN 106655019B CN 201611044151 A CN201611044151 A CN 201611044151A CN 106655019 B CN106655019 B CN 106655019B
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- cable
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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
-
- 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
- H02G1/16—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for repairing insulation or armouring of cables
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Abstract
The invention discloses a kind of 10-35KV cable intermediate joints shrinkages to install modified technique, it is wrapped in outer semiconductive shielding layer outer surface and cold shrink tube fracture outer surface respectively by using two layers of water-proof self-adhesion adhesive tape, and two layers of water-proof self-adhesion adhesive tape is bonded together, to which the good natural shrinking characteristic of cold shrink tube both be utilized, gap that may be present between cold shrink tube and cable can be thoroughly closed by the bonding between water-proof self-adhesion adhesive tape again, substantially increase the water resistance of the cable intermediate joint of technique making；Simultaneously by reserved transition gap between connecting tube and insulating layer, and semi-conductive adhesive band is wound on the transition gap and middle adapter, can solve the problems in insulating layer and middle adapter junction electric field height collection.
Description
Technical field
The present invention relates to technical field of electric power, modified technique is installed in especially a kind of 10-35KV cable intermediate joints shrinkage.
Background technology
It is well known that moisture and moisture are to endanger one of maximum factor to cable accessory insulation, once into inside it
Dielectric level will be caused to decline even to puncture, and cable intermediate joint is the weak spot of whole cable, so in cable indirectly
Requirement higher of the head to waterproof；Transition joint mounting process is mainly by pyrocondensation technique and chilling shrink process at present, and pyrocondensation technique is because needing
Heat-shrink tube is toasted using flame, it is same uniform to cannot be guaranteed that any position of heat-shrink tube all carries out in baking process
Heat shrinkable, such transition joint, there are bubble or gap in pipe, can cause water resistance because heat-shrink tube contraction is uneven
Difference, the defect of insulation performance difference；Traditional chilling shrink process is sealed cable connector both ends using cold shrink tube, utilizes cold shrink tube
Elastic compression power relies solely on elastic compression to be close to seal with the out semiconductor layer outer surface at cable connector
Power is difficult to ensure that there is no gaps, even if being also wound with adhesive waterproof tape outside cold shrink tube, but as long as moisture and moisture can enter
Outside cold shrink tube, it is possible to be entered inside transition joint by the gap between cold shrink tube and out semiconductor layer, and cause centre
The dielectric level of connector, which declines, even to be punctured.Moreover, because the thickness of insulating layer of 10-35KV cables is bigger, intermediate connection tube
Hierarchic structure can be formed between insulating layer, which can lead to electric field height concentration problem, be brought to the operation of cable
Security risk.
Invention content
For the above-mentioned prior art the problem of, the present invention provide a kind of 10-35KV cable intermediate joints shrinkage peace
Fill modified technique, in order to which the sealing performance and insulation performance for improving cable intermediate joint effectively solve intermediate connection tube
Electric field concentration problem between insulating layer, and higher mechanical strength can be born.
The present invention is realized by following technical proposals：
A kind of 10-35KV cable intermediate joints shrinkage installation modified technique, material therefor include：Water-proof self-adhesion adhesive tape, it is cold
The draw, middle adapter, constant force spring, ground wire, armoring tape, adhesive waterproof tape, PVC tape, insulating tape, silicone grease cream；Specific work
Steps are as follows for skill：
Step 1：Remove oversheath：Long cut cable peels off 700mm-800mm, and 500-600mm is peelled off at stub cable end；
Step 2：Remove steel armour：At oversheath fracture 20-30mm, steel armour is tied with constant force spring, then along steel armour
It packs tightly direction and saws a ring, lever up the cut edge of steel armour, pull down and turn Song Gangkai, deviate from steel armour, and handle the burr at sawed-off place well；
Step 3：Remove inner sheath：At steel armour fracture 90-100mm, inner sheath is shelled, when operation prevents from scratching copper shield
Layer；
Step 4：Band and filler are peeled off, each phase cable fork is operated；
Step 5：Remove copper strip shielding layer：At cable fracture 200mm ± 5mm, simultaneously mark position is tightened with insulating tape,
Copper strip shielding layer is removed, when operation prevents from scratching outer semiconducting layer；
Step 6：Remove out semiconductor layer:At copper strip shielding layer fracture 40-50mm, semi-conductive shield outside is removed
Layer, when operation, prevent from scratching insulating layer；
Step 7：Stripping insulation layer and inner semiconductor layer：Strip length is slightly larger than the half of middle adapter overall length, with
There is certain transition gap with insulating layer after so that connecting tube is crimped, when operation prevents from scratching copper conductor；
Step 8：Polishing cleaning：45 ° of chamferings for being multiplied by 2mm are cut on insulating layer notch, the notch for insulating layer of polishing is beaten
After mill, slope surface answers smooth bright and clean, clean copper conductor, insulating layer and out semiconductor layer, removal to be embedded in insulating layer table
The semiconductive particle in face, outer semiconducting layer fracture should be concordant, to improve the field distribution in transition joint, solve outer semiconducting layer
The problems in incision position electric field height collection；
Step 9：Wrapped first layer water-proof self-adhesion adhesive tape：Wrapped first layer waterproof is from viscose outside out semiconductor layer
Band；
Step 10：It is set with cold shrink tube and copper shield net cover：Cold shrink tube is sleeved on long cut cable, copper shield net cover is mounted in
Stub cable end.
Step 11：Crimp middle adapter：Middle adapter is sleeved on the outside of cable copper conductor and is crimped with by two cables
It connects, it is after crimping that the processing of the burr on middle adapter surface is clean；
Step 12：Semi-conductive adhesive band is wound on transition gap between middle adapter and insulating layer, and in connecting tube
Surface is wrapped with the semi-conductive tape of suitable thickness, makes middle adapter and insulating layer rounding off；
Step 13：Copper conductor and insulating layer are wiped clean, silicone grease cream is uniformly smeared；
Step 14：Location and installation cold shrink tube：Shrinkage pipe end is overlapped on the of cable out semiconductor layer outer surface
On one layer of water-proof self-adhesion adhesive tape, the plastic support item in pull cold shrink tube makes cold shrink tube envelope cable interface, and cold shrink tube
Two-port be bonded in respectively long cut cable, stub cable end first layer water-proof self-adhesion adhesive tape on；
Step 15：Wrapped second layer water-proof self-adhesion adhesive tape：It is anti-that the wrapped second layer is partly put up respectively in the two-port of cold shrink tube
Water is overlapped from the half of adhesive tape with cold shrink tube from adhesive tape, second layer waterproof, the other half is taken with first layer waterproof from adhesive tape
It connects；
Step 16：Copper shield net cover and interior ground wire are installed：It is covered mounted in the copper shield net cover at stub cable end before pulling out
The both ends of copper shield net cover and ground wire are fixed on copper strip shielding layer, with insulating tape packet by cable connector with constant force spring
Tight constant force spring；
Step 17：Backfill filler：By band of stripping and filler backfill, is packed tightly with PVC tape, marine glue is used in combination
Band puts up the entire cable connector of winding；
Step 18：External ground wire is installed：One end of external ground wire is fixed to the steel band armour of cable at one end with constant force spring
It loads onto, then wind cable with external ground wire and is fixed on the steel-tape armouring of another end cable using constant force spring, used
PVC tape packs tightly, and adhesive waterproof tape is used in combination to put up the entire cable connector of winding；
Step 19：Armoring tape is installed：After opening armoring tape packaging, its half overlapping overlap joint is wound into entire cable rapidly and is connect
Head；
Step 20：Installation is complete, and standing 30 minutes or more can removal cable.
A kind of advantageous effect of present invention 10-35KV cable intermediate joints shrinkage installation modified technique is：By using two
Layer water-proof self-adhesion adhesive tape is wrapped in outer semiconductive shielding layer outer surface and cold shrink tube fracture outer surface respectively, and two layers of water-proof self-adhesion
Adhesive tape is bonded together, to which the good natural shrinking characteristic of cold shrink tube not only be utilized, but also can be by between water-proof self-adhesion adhesive tape
Bonding and thoroughly close gap that may be present between cold shrink tube and cable, substantially increase the technique making cable among
The water resistance of connector；Simultaneously by reserved transition gap between connecting tube and insulating layer, and in the transition gap and centre
Winding semi-conductive adhesive band is taken over, the problems in insulating layer and middle adapter junction electric field height collection can be solved.
Specific implementation mode
The present invention is a kind of modified technique of 25-40mm diameter cables transition joint shrinkage installation, and material therefor includes：It is anti-
Water single-coated foam, cold shrink tube, middle adapter, constant force spring, ground wire, armoring tape, adhesive waterproof tape, PVC tape, insulating tape,
Silicone grease cream improves safety and the stabilization of cable to increase water-proof sealing performance, insulation performance, the mechanical performance of transition joint
Property.
Specific process step is as follows：
Step 1：Remove oversheath：Long cut cable peels off 800mm, and 600mm is peelled off at stub cable end；
Step 2：Remove steel armour：At oversheath fracture 30mm, steel armour is tied with constant force spring, is then packed tightly along steel armour
A ring is sawed in direction, levers up the cut edge of steel armour, pulls down and turn Song Gangkai after prying open with pliers, deviates from steel armour, and handle sawed-off place well
Burr；
Step 3：Remove inner sheath：At steel armour fracture 100mm, inner sheath is cut off, the cut mark of inner sheath should be less than interior shield
The thickness of set, to prevent from scratching copper shield；
Step 4：Band and filler are peeled off, each phase cable fork is operated；
Step 5：Remove copper strip shielding layer：At cable fracture 205mm, simultaneously mark position, stripping are tightened with insulating tape
Copper strip shielding layer, when cutting, one tool marks of first ring cutting cannot be cut through, and prevent from scratching outer semiconducting layer, when divesting, should be with tool marks at
Stripping is torn, mouth is disconnected and is divested to core end；
Step 6：Remove out semiconductor layer:At copper strip shielding layer fracture 50mm, out semiconductor layer, behaviour are removed
As when prevent scratch insulating layer；
Step 7：Stripping insulation layer and inner semiconductor layer：Strip length is slightly larger than the half of middle adapter overall length, with
There is certain transition gap with insulating layer after so that connecting tube is crimped, when operation prevents from scratching copper conductor；
Step 8：Polishing cleaning：45 ° of chamferings for being multiplied by 2mm are cut on insulating layer notch, the notch for insulating layer of polishing is beaten
After mill, slope surface answers smooth bright and clean, clean copper conductor, insulating layer and out semiconductor layer, removal to be embedded in insulating layer table
The semiconductive particle in face, outer semiconducting layer fracture should be concordant, to improve the field distribution in transition joint, solve outer semiconducting layer
The problems in incision position electric field height collection；
Step 9：Wrapped first layer water-proof self-adhesion adhesive tape：Wrapped first layer waterproof is from viscose outside out semiconductor layer
Band；
Step 10：It is set with cold shrink tube and copper shield net cover：Cold shrink tube is sleeved on long cut cable, copper shield net cover is mounted in
Stub cable end.
Step 11：Crimp middle adapter：Middle adapter is sleeved on the outside of cable copper conductor and is crimped with by two cables
It connects, it is after crimping that the processing of the burr on middle adapter surface is clean；
Step 12：Semi-conductive adhesive band is wound on transition gap between middle adapter and insulating layer, and in connecting tube
Surface is wrapped with the semi-conductive tape of suitable thickness, makes middle adapter and insulating layer rounding off, due to the thickness of insulating layer ratio of cable
It is larger, by reserved transition gap between connecting tube and insulating layer, and winds on the transition gap and middle adapter and partly lead
Electric adhesive tape can solve the problems in insulating layer and middle adapter junction electric field height collection；
Step 13：Copper conductor and insulating layer are wiped clean, silicone grease cream is uniformly smeared；
Step 14：Location and installation cold shrink tube：Shrinkage pipe end is overlapped on the of cable out semiconductor layer outer surface
On one layer of water-proof self-adhesion adhesive tape, the plastic support item that overlapped in preferred 20mm, pull cold shrink tube makes cold shrink tube envelope
Cable interface, and the two-port of cold shrink tube be bonded in respectively long cut cable, stub cable end first layer water-proof self-adhesion adhesive tape on；
Step 15：Wrapped second layer water-proof self-adhesion adhesive tape：It is anti-that the wrapped second layer is partly put up respectively in the two-port of cold shrink tube
Water is overlapped from the half of adhesive tape with cold shrink tube from adhesive tape, second layer waterproof, the other half is taken with first layer waterproof from adhesive tape
It connects；It is wrapped in outer semiconductive shielding layer outer surface and cold shrink tube fracture outer surface respectively by using two layers of water-proof self-adhesion adhesive tape,
And two layers of water-proof self-adhesion adhesive tape is bonded together, to which the good natural shrinking characteristic of cold shrink tube not only be utilized, but also can be by anti-
Bonding between water single-coated foam and thoroughly close gap that may be present between cold shrink tube and cable, substantially increase the technique
The water resistance of the cable intermediate joint of making；
Step 16：Copper shield net cover and interior ground wire are installed：It is covered mounted in the copper shield net cover at stub cable end before pulling out
The both ends of copper shield net cover and ground wire are fixed on copper strip shielding layer, with insulating tape packet by cable connector with constant force spring
Tight constant force spring；
Step 17：Backfill filler：By band of stripping and filler backfill, is packed tightly with PVC tape, marine glue is used in combination
Band puts up the entire cable connector of winding, to improve the insulation performance and water resistance of transition joint；
Step 18：External ground wire is installed：One end of external ground wire is fixed to the steel band armour of cable at one end with constant force spring
It loads onto, then wind cable with external ground wire and is fixed on the steel-tape armouring of another end cable using constant force spring, used
PVC tape packs tightly, and adhesive waterproof tape is used in combination to put up the entire cable connector of winding；
Step 19：Armoring tape is installed：After opening armoring tape packaging, its half overlapping overlap joint is wound into entire cable rapidly and is connect
Head, to improve the mechanical performance of transition joint；
Step 20：Installation is complete, and standing 30 minutes or more can removal cable.
In conclusion present disclosure is not limited in above-described embodiment, those skilled in the art can be at this
Other embodiments are proposed within the technological guidance's thought of invention, but these embodiments are included within the scope of the present invention.
Claims (1)
1. modified technique is installed in a kind of 10-35KV cable intermediate joints shrinkage, which is characterized in that material therefor includes：Semiconductive
Adhesive tape, water-proof self-adhesion adhesive tape, cold shrink tube, middle adapter, constant force spring, ground wire, armoring tape, adhesive waterproof tape, PVC tape, absolutely
Edge adhesive tape, silicone grease cream；Specific process step is as follows：
Step 1：Remove oversheath：Long cut cable peels off 700mm-800mm, and 500-600mm is peelled off at stub cable end；
Step 2：Remove steel armour：At oversheath fracture 20-30mm, steel armour is tied with constant force spring, is then packed tightly along steel armour
A ring is sawed in direction, levers up the cut edge of steel armour, pulls down and turn Song Gangkai, deviates from steel armour, and handle the burr at sawed-off place well；
Step 3：Remove inner sheath：At steel armour fracture 90-100mm, inner sheath is shelled, when operation prevents from scratching copper shield；
Step 4：Band and filler are peeled off, each phase cable fork is operated；
Step 5：Remove copper strip shielding layer：At cable fracture 200mm ± 5mm, simultaneously mark position, stripping are tightened with insulating tape
Copper strip shielding layer, when operation, prevent from scratching outer semiconducting layer；
Step 6：Remove out semiconductor layer:At copper strip shielding layer fracture 40-50mm, out semiconductor layer, behaviour are removed
As when prevent scratch insulating layer；
Step 7：Stripping insulation layer and inner semiconductor layer：Strip length is slightly larger than the half of middle adapter overall length, so that even
Take over after crimping has certain transition gap with insulating layer, and when operation prevents from scratching copper conductor；
Step 8：Polishing cleaning：45 ° of chamferings for being multiplied by 2mm, the notch for insulating layer of polishing, polishing are cut on insulating layer notch
Afterwards, slope surface answers smooth bright and clean, clean copper conductor, insulating layer and out semiconductor layer, removal to be embedded in surface of insulating layer
Semiconductive particle, outer semiconducting layer fracture should be concordant；
Step 9：Wrapped first layer water-proof self-adhesion adhesive tape：Wrapped first layer waterproof is from adhesive tape outside out semiconductor layer；
Step 10：It is set with cold shrink tube and copper shield net cover：Cold shrink tube is sleeved on long cut cable, copper shield net cover is mounted in short electricity
Cable-end；
Step 11：Crimp middle adapter：Middle adapter is sleeved on the outside of cable copper conductor and is crimped with by two cable connections
Get up, it is after crimping that the processing of the burr on middle adapter surface is clean；
Step 12：Semi-conductive adhesive band is wound on transition gap between middle adapter and insulating layer, and on the surface of connecting tube
It is wrapped with the semi-conductive tape of suitable thickness, makes middle adapter and insulating layer rounding off；
Step 13：Copper conductor and insulating layer are wiped clean, silicone grease cream is uniformly smeared；
Step 14：Location and installation cold shrink tube：Shrinkage pipe end is overlapped on to the first layer of cable out semiconductor layer outer surface
On water-proof self-adhesion adhesive tape, the plastic support item in pull cold shrink tube makes cold shrink tube envelope cable interface, and the both ends of cold shrink tube
Mouth be bonded in respectively long cut cable, stub cable end first layer water-proof self-adhesion adhesive tape on；
Step 15：Wrapped second layer water-proof self-adhesion adhesive tape：Wrapped second layer waterproof is partly put up respectively certainly in the two-port of cold shrink tube
Adhesive tape, second layer waterproof are overlapped from the half of adhesive tape with cold shrink tube, the other half is overlapped with first layer waterproof from adhesive tape；
Step 16：Copper shield net cover and interior ground wire are installed：The copper shield net cover covering cable at stub cable end is mounted in before pulling out
The both ends of copper shield net cover and ground wire are fixed on copper strip shielding layer with constant force spring, perseverance are packed tightly with insulating tape by connector
Power spring；
Step 17：Backfill filler：By band of stripping and filler backfill, is packed tightly with PVC tape, adhesive waterproof tape is used in combination to take
Lid winds entire cable connector；
Step 18：External ground wire is installed：One end of external ground wire is fixed on the steel-tape armouring of cable at one end with constant force spring,
Then it winds cable with external ground wire and is fixed on the steel-tape armouring of another end cable using constant force spring, with PVC glue
Band packs tightly, and adhesive waterproof tape is used in combination to put up the entire cable connector of winding；
Step 19：Armoring tape is installed：After opening armoring tape packaging, its half overlapping overlap joint is wound into entire cable connector rapidly；
Step 20：Installation is complete, and standing 30 minutes or more can removal cable.
Priority Applications (1)
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| CN201611044151.2A CN106655019B (en) | 2016-11-24 | 2016-11-24 | A kind of 10-35KV cable intermediate joints shrinkage installation modified technique |
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| CN201611044151.2A CN106655019B (en) | 2016-11-24 | 2016-11-24 | A kind of 10-35KV cable intermediate joints shrinkage installation modified technique |
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| CN106655019B true CN106655019B (en) | 2018-11-09 |
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Cited By (1)
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| CN109616962A (en) * | 2018-12-21 | 2019-04-12 | 吴江市华鼎热缩制品有限公司 | A kind of hot melten type cable centre connection mounting process |
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| CN109473944B (en) * | 2018-03-09 | 2020-06-16 | 东阳市光明电力建设有限公司 | Cable connection structure convenient to detect and connection method |
| CN108471092A (en) * | 2018-04-18 | 2018-08-31 | 日照港股份有限公司动力分公司 | The single-phase dry packet restorative procedure of high-tension cable |
| CN108988230A (en) * | 2018-07-31 | 2018-12-11 | 国网福建省电力有限公司 | Cable semi-conductive fracture chamfered method |
| CN109378775B (en) * | 2018-11-30 | 2021-06-18 | 国网江苏省电力有限公司无锡供电分公司 | Optimized manufacturing method for sealing and water-blocking of cable cold-shrinkage type joint |
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