CN109256743A - A kind of cable intermediate joint and attaching method thereof - Google Patents
A kind of cable intermediate joint and attaching method thereof Download PDFInfo
- Publication number
- CN109256743A CN109256743A CN201811229693.6A CN201811229693A CN109256743A CN 109256743 A CN109256743 A CN 109256743A CN 201811229693 A CN201811229693 A CN 201811229693A CN 109256743 A CN109256743 A CN 109256743A
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- layer
- cable
- insulation
- repair
- repair layer
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000008439 repair process Effects 0.000 claims abstract description 74
- 238000009413 insulation Methods 0.000 claims abstract description 44
- 239000004020 conductor Substances 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 9
- 230000007704 transition Effects 0.000 claims description 25
- 238000009740 moulding (composite fabrication) Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000003032 molecular docking Methods 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 2
- 239000005864 Sulphur Substances 0.000 claims 2
- 230000008569 process Effects 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 239000000155 melt Substances 0.000 abstract 2
- 230000006872 improvement Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
Landscapes
- Processing Of Terminals (AREA)
- Cable Accessories (AREA)
Abstract
本发明公开一种电缆中间接头及其连接方法，电缆中间接头包括两电缆接头端，每一电缆接头端从接头端末尾向另一端方向依次切削形成从内到外依次裸露有导体、内半导电层、绝缘层和外半导电层的锥状端。绝缘层的外表面形成至少一凹状槽。内半导电修复层、两电缆接头的绝缘层外整体熔接有绝缘修复层，绝缘修复层在与绝缘层熔接时其熔液融入绝缘层的凹状槽，不仅使得电缆接头端的绝缘层与绝缘修复层有较大的熔接面积，而且使得绝缘修复层进入绝缘层的凹状槽内，这增强了电缆接头端的绝缘层与绝缘修复层的连接紧密度和连接强度，另外，绝缘层的凹状槽能够消除加热熔接过程中容易产生的活动界面，避免中间接头绝缘介质击穿，延长电缆中间接头的使用寿命。
The invention discloses a cable intermediate joint and a connecting method thereof. The cable intermediate joint comprises two cable joint ends, and each cable joint end is sequentially cut from the end of the joint end to the other end to form exposed conductors and semi-conductive inner parts. layer, insulating layer and tapered end of the outer semiconducting layer. At least one concave groove is formed on the outer surface of the insulating layer. The inner semi-conductive repair layer and the insulation layer of the two cable joints are integrally welded with an insulation repair layer. When the insulation repair layer is welded with the insulation layer, the melt melts into the concave groove of the insulation layer, which not only makes the insulation layer of the cable joint end and the insulation repair layer. It has a larger welding area, and makes the insulation repair layer enter the concave groove of the insulation layer, which enhances the connection tightness and connection strength between the insulation layer and the insulation repair layer at the cable connector end. In addition, the concave groove of the insulation layer can eliminate heating The movable interface that is easily generated during the welding process can avoid the breakdown of the insulating medium of the intermediate joint and prolong the service life of the intermediate joint of the cable.
Description
Technical field
The present invention relates to a kind of cable intermediate joints and attaching method thereof.
Background technique
When conventional power cable transition joint makes, insulated end portions must be whittled into cone, form reagency cone, connect to improve
The performance of head.But transition joint, when carrying out continued access recovery, the insulated end portions cone and moulded cable accessory are by environment and people
To be affected, it is easy to produce active interface, waterproof seal is poor, is easy layering, product at transition joint when cable being caused to run
Tired charge leads to transition joint dielectric breakdown caused by the distortion of insulating layer internal field, shortens cable service life.
Summary of the invention
It is a primary object of the present invention to overcome the deficiencies of the prior art and provide, a kind of simple process, insulation be reliable, welding
Even closer cable intermediate joint.
To achieve the above object, the invention adopts the following technical scheme:
A kind of cable intermediate joint, including two cable connector ends, each cable connector end is from tip side end to another
One extreme direction, which is successively cut, forms from inside to outside the successively exposed cone for having conductor, interior semi-conductive layer, insulating layer and outer semiconducting layer
Shape end, the outer surface of the insulating layer form an at least concave groove, wherein the conductor at a cable connector end with it is another described
The conductor at cable connector end, which is electrically connected, is electrically connected head, and the electric connection head is naked with two cable connector ends
Dew conductor is coated with interior semiconductive repair layer, and the both ends of the interior semiconductive repair layer are respectively in two cable connector ends half
Conductive layer overlap joint, the interior semiconductive repair layer, two cable connectors the outer Integral melting of insulating layer be connected to insulation repair layer, wherein
Described insulation repair layer its melt when with insulating layer welding incorporates the concave groove of insulating layer, and the insulation repair layer is coated with
Outer semiconductive repair layer, the both ends of the outer semiconductive repair layer are overlapped with the outer semiconducting layer at two cable connector ends respectively.
Preferably, the concave groove in the shape of a spiral, circular or circular hole.
Preferably, the concavity rooved face is rough surface.
Preferably, the surface that the insulation repair layer is docked with the insulating layer of cable connector is convexly equipped with and the cable connector
Insulating layer the corresponding convex architecture of concave groove.
Preferably, the insulation repair layer is two double of structure of prefabricated forming, described two prefabricated formings, double of structure difference
It is correspondingly sleeved on outside the insulating layer of the interior semiconductive repair layer, two cable connectors.
Preferably, the interior semiconductive repair layer, insulation repair layer it is integral prefabricated with outer semiconductive repair layer together with and
Form two docking prefabricated components.
The present invention also provides a kind of connection methods of cable intermediate joint, include the following steps:
Step 1, prefabricated formation transition joint attachment, transition joint attachment include the interior semiconductive set gradually from inside to outside
Repair layer, insulation repair layer and outer semiconductive repair layer, wherein interior semiconductive repair layer, insulation repair layer and outer semiconductive are repaired
Cladding respectively independent member or it is integral prefabricated together；
Step 2, each cable connector end is successively cut from tip side end to another extreme direction, is formed with from interior
To successively exposed conductor, interior semi-conductive layer, insulating layer and outer semiconducting layer outside, by the outer surface of the insulating layer at cable connector end
The concave groove for being formed with indent is set；
Step 3, the conductor at each cable connector end and the conductor at another cable connector end are electrically connected at
It is formed together electric connection head；
Step 4, transition joint attachment is covered into the conductor for being electrically connected head and two cable connectors formed in step 3, interior
Outside semi-conductive layer, insulating layer and outer semiconducting layer, transition joint attachment is fixed using heating vulcanizing mold and heats vulcanization；
Step 5, heating vulcanizing mold is removed, that is, completes the connection of cable intermediate joint.
Preferably, when step 4 heats transition joint attachment using heating vulcanizing mold and vulcanizes, to the two of heating vulcanizing mold
End is cooled down, and prevents heating from influencing cable other parts when vulcanizing.
The present invention also provides the connection methods of another cable intermediate joint, i.e., by the connection side of above-mentioned cable intermediate joint
Step 1 and step 2 replacement in method form the technical program.
As described above, the outer surface of the insulating layer at the cable connector end of cable intermediate joint of the present invention forms an at least concavity
Slot, described insulation repair layer its melt when with insulating layer heat welded incorporate the concave groove of insulating layer, not only cable are connect
The insulating layer of head end and insulation repair layer have biggish welding area, and the repair layer that insulate enters the concave groove of insulating layer
It is interior, which enhance the degree of being completely embedded and bonding strength of the insulating layer at cable connector end and insulation repair layer, and insulating layer
Concave groove can eliminate the active interface being easy to produce during heat welded, and transition joint dielectric is avoided to puncture, and extend
The service life of cable intermediate joint.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the cable intermediate joint of the present invention after conductor connection；
Fig. 2 is the cross section structure schematic diagram of cable intermediate joint shown in Fig. 1.
Specific embodiment
It elaborates below to a kind of embodiment of intermediate joint of electric cable insulating layer reparation of the present invention.It should be strong
It adjusts, following the description is only exemplary, the range and its application being not intended to be limiting of the invention.
Fig. 1 and Fig. 2 are please referred to, cable intermediate joint of the present invention includes two cable connector ends, each cable connector end
10 from tip side end to another extreme direction successively cut formation from inside to outside successively it is exposed have conductor 11, interior semi-conductive layer 12,
The conoid end of insulating layer 13 and outer semiconducting layer 14.
The outer surface of insulating layer 13 forms an at least concave groove 131, concave groove 131 can in the shape of a spiral, circular or circle
Poroid, 131 surface of concave groove is preferably rough surface, and rough surface can further improve welding tightness.
Wherein the conductor 11 at the conductor 11 at a cable connector end 10 and another cable connector end 10 is electrically connected shape
At head 15 is electrically connected, the bare exposed conductor 11 for being electrically connected head 15 and two cable connector ends 10 is coated with interior semiconductive repair layer
20, the both ends of interior semiconductive repair layer 20 are overlapped with the interior semi-conductive layer 12 at two cable connector ends 10 respectively, interior semiconductive reparation
Layer 20, two cable connector 10 the outer Integral melting of insulating layer 13 be connected to insulation repair layer 30, wherein insulate repair layer 30 with it is exhausted
Its melt incorporates the concave groove 131 of insulating layer 13 when 13 welding of edge layer.Insulation repair layer 30 is coated with outer semiconductive repair layer
40, the both ends of outer semiconductive repair layer 40 are overlapped with the outer semiconducting layer 14 at two cable connector ends 10 respectively.
As further improvement of this embodiment, what the insulation repair layer 30 was docked with the insulating layer 13 of cable connector 10
Surface is convexly equipped with convex architecture corresponding with the concave groove 131 of insulating layer 13 at the cable connector end 10.
As further improvement of this embodiment, the insulation repair layer 30 be two double of structure of prefabricated forming, described two
Double of structure of prefabricated forming, which respectively corresponds, to be socketed in outside the insulating layer 13 of the interior semiconductive repair layer 20, two cable connectors 10.
As further improvement of this embodiment, the interior semiconductive repair layer 20, insulation repair layer 30 and outer semiconductive
Repair layer 40 it is integral prefabricated together and formed two docking prefabricated components.
The present invention also provides a kind of connection methods of cable intermediate joint, include the following steps:
Step 1, prefabricated formation transition joint attachment, transition joint attachment include the interior semiconductive set gradually from inside to outside
Repair layer 20, insulation repair layer 30 and outer semiconductive repair layer 40, wherein interior semiconductive repair layer 20, insulation 30 and of repair layer
The respective independent member of outer semiconductive repair layer 40 or it is integral prefabricated together；
Step 2, each cable connector end 10 is successively cut from tip side end to another extreme direction, be formed with from
It is interior to outer successively exposed conductor 11, interior semi-conductive layer 12, insulating layer 13 and outer semiconducting layer 14, by the exhausted of cable connector end 10
The outer surface setting of edge layer 13 is formed with the concave groove 131 of indent；
Step 3, by 11 electricity of the conductor 11 at each cable connector end 10 and the conductor at another cable connector end 10
Property be joined together to form be electrically connected head 15；
Step 4, transition joint attachment is covered to leading for the electric connection head 15 and two cable connector ends 10 formed in step 3
Outside body 11, interior semi-conductive layer 11, insulating layer 13 and outer semiconducting layer, transition joint attachment is fixed using heating vulcanizing mold
And heat vulcanization；
Step 5, heating vulcanizing mold is removed, that is, completes the connection of cable intermediate joint.
As further improvement of this embodiment, transition joint attachment is heated using heating vulcanizing mold in step 4 and is vulcanized
When, the both ends of heating vulcanizing mold are cooled down, prevent heating from influencing cable other parts when vulcanizing.
The present invention also provides the connection methods of another cable intermediate joint, i.e., by the connection side of above-mentioned cable intermediate joint
Step 1 and step 2 replacement in method are formed.
In conclusion the outer surface of the insulating layer 13 at the cable connector end 10 of cable intermediate joint of the present invention forms at least one
Concave groove 131, described insulation repair layer 30 its melt when with 13 heat welded of insulating layer incorporate the concave groove of insulating layer 13
131, not only make the insulating layer 131 at cable connector end 10 and insulation repair layer 30 have biggish welding area, but also make absolutely
Edge reparation layer 30 enters in the concave groove 131 of insulating layer 13, enhances the insulating layer 13 and insulation repair layer at cable connector end 10
30 degree of being completely embedded and bonding strength, the concave groove 131 of insulating layer 13 can eliminate what heat welded was easy to produce in the process
Active interface avoids transition joint dielectric from puncturing, extends the service life of cable intermediate joint.
The above content is combine it is specific/further detailed description of the invention for preferred embodiment, cannot recognize
Fixed specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs,
Without departing from the inventive concept of the premise, some replacements or modifications can also be made to the embodiment that these have been described,
And these substitutions or variant all shall be regarded as belonging to protection scope of the present invention.
Claims (11)
1. a kind of cable intermediate joint, it is characterised in that: including two cable connector ends, each cable connector end is from tip side
End successively cuts to be formed to another extreme direction successively exposed from inside to outside to be had conductor, interior semi-conductive layer, insulating layer and partly leads outside
The conoid end of electric layer, the outer surface of the insulating layer form an at least concave groove, wherein the conductor at a cable connector end with
The conductor at another cable connector end, which is electrically connected, is electrically connected head, and the electric connection head connects with two cables
The bare exposed conductor of head end is coated with interior semiconductive repair layer, the both ends of the interior semiconductive repair layer respectively with two cable connectors
The interior semi-conductive layer overlap joint at end, the interior semiconductive repair layer, two cable connectors the outer Integral melting of insulating layer be connected to insulation and repair
Layer, wherein described insulation repair layer its melt when with insulating layer welding incorporates the concave groove of insulating layer, the insulation repair layer
It is coated with outer semiconductive repair layer, the both ends of the outer semiconductive repair layer outer semiconducting layer with two cable connector ends respectively
Overlap joint.
2. cable intermediate joint according to claim 1, it is characterised in that: the concave groove is in the shape of a spiral.
3. cable intermediate joint according to claim 1, it is characterised in that: the concave groove is annular in shape.
4. cable intermediate joint according to claim 1, it is characterised in that: the concave groove is in circular hole.
5. cable intermediate joint according to claim 1, it is characterised in that: the concavity rooved face is rough surface.
6. cable intermediate joint according to claim 1, it is characterised in that: it is described insulation repair layer and cable connector it is exhausted
The surface of edge layer docking is equipped with convex architecture corresponding with the concave groove of the insulating layer of the cable connector.
7. cable intermediate joint according to claim 1, it is characterised in that: the insulation repair layer is two prefabricated formings pair
Half structure, it is described two it is prefabricated forming double of structure respectively correspond be socketed in the interior semiconductive repair layer, two cable connectors it is exhausted
Outside edge layer.
8. cable intermediate joint according to claim 1, it is characterised in that: the interior semiconductive repair layer, insulation are repaired
Together with layer is integral prefabricated with outer semiconductive repair layer and form two docking prefabricated components.
9. a kind of connection method of cable intermediate joint, it is characterised in that include the following steps:
Step 1, prefabricated formation transition joint attachment, transition joint attachment include the interior semiconductive reparation set gradually from inside to outside
Layer, insulation repair layer and outer semiconductive repair layer, wherein interior semiconductive repair layer, insulation repair layer and outer semiconductive repair layer
Respective independent member or it is integral prefabricated together；
Step 2, each cable connector end is successively cut from tip side end to another extreme direction, is formed with from inside to outside
The outer surface of the insulating layer at cable connector end is arranged for successively exposed conductor, interior semi-conductive layer, insulating layer and outer semiconducting layer
It is formed with the concave groove of indent；
Step 3, the conductor at each cable connector end and the conductor at another cable connector end are electrically connected
It is electrically connected head；
Step 4, step 4, by transition joint attachment cover the conductor for being electrically connected head and two cable connectors formed in step 3,
Outside interior semi-conductive layer, insulating layer and outer semiconducting layer, transition joint attachment is fixed using heating vulcanizing mold and heats sulphur
Change；
Step 5, heating vulcanizing mold is removed, that is, completes the connection of cable intermediate joint.
10. the connection method of cable intermediate joint according to claim 8, it is characterised in that: utilize heating sulphur in step 4
When changing mould to the heating vulcanization of transition joint attachment, the both ends of heating vulcanizing mold are cooled down.
11. a kind of connection method of cable intermediate joint, it is characterised in that include the following steps:
Step 1, each cable connector end is successively cut from tip side end to another extreme direction, is formed with from inside to outside
The outer surface of the insulating layer at cable connector end is arranged for successively exposed conductor, interior semi-conductive layer, insulating layer and outer semiconducting layer
It is formed with the concave groove of indent；
Step 2, prefabricated formation transition joint attachment, transition joint attachment include the interior semiconductive reparation set gradually from inside to outside
Layer, insulation repair layer and outer semiconductive repair layer, wherein interior semiconductive repair layer, insulation repair layer and outer semiconductive repair layer
Respective independent member or it is integral prefabricated together；
Step 3, the conductor at each cable connector end and the conductor at another cable connector end are electrically connected
It is electrically connected head；
Step 4, transition joint attachment covered into the conductor of the electric connection head and two cable connectors that are formed in step 3, interior partly led
Outside electric layer, insulating layer and outer semiconducting layer, transition joint attachment is fixed using heating vulcanizing mold and heats vulcanization；
Step 5, heating vulcanizing mold is removed, that is, completes the connection of cable intermediate joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811229693.6A CN109256743A (en) | 2018-10-22 | 2018-10-22 | A kind of cable intermediate joint and attaching method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811229693.6A CN109256743A (en) | 2018-10-22 | 2018-10-22 | A kind of cable intermediate joint and attaching method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109256743A true CN109256743A (en) | 2019-01-22 |
Family
ID=65046517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811229693.6A Pending CN109256743A (en) | 2018-10-22 | 2018-10-22 | A kind of cable intermediate joint and attaching method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109256743A (en) |
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| CN201298725Y (en) * | 2008-05-26 | 2009-08-26 | 上海宝钢化工有限公司 | Fire-proof and explosion-proof unit for middle cable joint |
| CN201893446U (en) * | 2010-11-24 | 2011-07-06 | 比亚迪股份有限公司 | Connector with high-tension wire harness |
| CN201904597U (en) * | 2010-12-17 | 2011-07-20 | 上海市电力公司 | Precast connector of high-voltage direct-current cross-linked polyethylene cable |
| CN103296526A (en) * | 2012-03-02 | 2013-09-11 | 富士康(昆山)电脑接插件有限公司 | Cable connector assembly |
| CN104993443A (en) * | 2015-06-30 | 2015-10-21 | 张家港金海港电线电缆有限公司 | Rapid cable connector |
| CN107634497A (en) * | 2017-10-31 | 2018-01-26 | 清华大学 | Prefabricated cable intermediate joints using composite materials with self-adaptive regulation of conductivity |
| CN107994517A (en) * | 2017-11-22 | 2018-05-04 | 广东科启电力技术有限公司 | Manufacturing method of fusion-connection type straight-through joint for 10 kV-35 kV cable process |
| CN209016677U (en) * | 2018-10-22 | 2019-06-21 | 深圳市沃尔核材股份有限公司 | A kind of cable intermediate joint |
-
2018
- 2018-10-22 CN CN201811229693.6A patent/CN109256743A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201298725Y (en) * | 2008-05-26 | 2009-08-26 | 上海宝钢化工有限公司 | Fire-proof and explosion-proof unit for middle cable joint |
| CN201893446U (en) * | 2010-11-24 | 2011-07-06 | 比亚迪股份有限公司 | Connector with high-tension wire harness |
| CN201904597U (en) * | 2010-12-17 | 2011-07-20 | 上海市电力公司 | Precast connector of high-voltage direct-current cross-linked polyethylene cable |
| CN103296526A (en) * | 2012-03-02 | 2013-09-11 | 富士康(昆山)电脑接插件有限公司 | Cable connector assembly |
| CN104993443A (en) * | 2015-06-30 | 2015-10-21 | 张家港金海港电线电缆有限公司 | Rapid cable connector |
| CN107634497A (en) * | 2017-10-31 | 2018-01-26 | 清华大学 | Prefabricated cable intermediate joints using composite materials with self-adaptive regulation of conductivity |
| CN107994517A (en) * | 2017-11-22 | 2018-05-04 | 广东科启电力技术有限公司 | Manufacturing method of fusion-connection type straight-through joint for 10 kV-35 kV cable process |
| CN209016677U (en) * | 2018-10-22 | 2019-06-21 | 深圳市沃尔核材股份有限公司 | A kind of cable intermediate joint |
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Application publication date: 20190122 |
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