CN105244817B - A kind of 10kV three-core cable shrinks transition joint improves mounting process - Google Patents
A kind of 10kV three-core cable shrinks transition joint improves mounting process Download PDFInfo
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- CN105244817B CN105244817B CN201510626756.1A CN201510626756A CN105244817B CN 105244817 B CN105244817 B CN 105244817B CN 201510626756 A CN201510626756 A CN 201510626756A CN 105244817 B CN105244817 B CN 105244817B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000007704 transition Effects 0.000 title claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052802 copper Inorganic materials 0.000 claims abstract description 40
- 239000010949 copper Substances 0.000 claims abstract description 40
- 239000000853 adhesive Substances 0.000 claims abstract description 32
- 230000001070 adhesive effect Effects 0.000 claims abstract description 32
- 238000009413 insulation Methods 0.000 claims abstract description 26
- 239000010410 layer Substances 0.000 claims abstract description 24
- 239000004698 Polyethylene Substances 0.000 claims abstract description 15
- 229920000573 polyethylene Polymers 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- -1 polyethylene Polymers 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 9
- 230000001680 brushing effect Effects 0.000 claims abstract description 5
- 239000002344 surface layer Substances 0.000 claims abstract description 5
- 238000002788 crimping Methods 0.000 claims abstract description 4
- 239000000945 filler Substances 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 244000137852 Petrea volubilis Species 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 3
- 239000003599 detergent Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004519 grease Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 229920001296 polysiloxane Polymers 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Abstract
The present invention relates to a kind of 10kV three-core cable shrinks transition joints to improve mounting process, includes the following steps：(1), filler between cable jacket, steel band, sheath and core is peelled off by size；(2), the copper shield and outer semiconducting layer of cable are peelled off by size；(3), cable major insulation is cleaned；(4) copper connecting tube, is crimped, and is inserted in shrinkage connector and copper shield net cover respectively, with hydraulic tongs crimping copper connecting tube and both ends conducting wire, is extremely highly flushed with major insulation with semi-conductive adhesive band winding copper conductor；(5), brushing polyethylene special type special-purpose adhesive；(6), two-component RTV is smeared；(7), shrinkage connector is installed；(8), it is set with copper shield net cover and overlaps flat copper braid over braid；(9), waterproof protective and mechanical protection are done.The present invention substitutes traditional silicone grease application process using the technique for smearing polyethylene special type special-purpose adhesive and RTV, can effectively smooth crosslinked polyetylene insulated surface layer, improve attachment insulation performance, save raw material consumptive material and simultaneously improve working efficiency.
Description
Technical field
The present invention relates to power cable field, especially a kind of 10kV three-core cable shrinks transition joint improves erector
Skill.
Background technology
Power cable is generally made of conductor, insulating layer and sheath three parts, and wherein sheath includes metal sheath and rubber and plastic
Sheath is respectively used to ensure the mechanical strength of power cable and prevents extraneous erosiveness.
It is limited to traffic condition, power cable is usually produced as 500 meter of one axis, when cable length needed for scene is more than 500
Meter Shi connects two cables by making transition joint.Transition joint be mainly used for restoring the conductor of power cable, insulating layer and
Sheath three-decker.Transition joint at present, if cable is caused to scratch when exploiting cable insulation, needs diameter in installation process
The whole section of cable scratched to excision, not only causes that cable consumption is big, financial cost is high, and returns staff and bring not
Just, working efficiency is reduced.
Invention content
In place of making up the deficiencies in the prior art, raw materials consumption can be reduced and add by providing one kind
The 10kV three-core cable shrinks transition joint of fast operating rate improves mounting process.
The purpose of the present invention is what is realized by following technological means：
A kind of 10kV three-core cable shrinks transition joint improves mounting process, it is characterised in that：Include the following steps：
(1), peelled off between cable jacket, sheath and core according to size as defined in the instruction for mounting of attachment manufactory
Filler if any steel band, also needs to peel off steel band, steel band stripping length mainly allows bending radius and defined phase spacing by core
To determine, and need to consider to be adapted with the shrinkage set length provided；
(2), defined size peels off the copper shield and outer semiconducting layer of cable to specifications, is removed in outer semiconducting layer
It should prevent plowing from major insulation as possible in the process；
(3) cable major insulation, is cleaned with detergent, but is sure not to be allowed to touch outer semiconducting layer；
(4), crimp copper connecting tube, and be inserted in shrinkage connector and copper shield net cover respectively, with the matched liquid of conductor cross-section
Pressing tongs point left, center, right crimp copper connecting tube and both ends conducting wire three times；After the completion of crimping, with semi-conductive adhesive band winding copper conductor extremely
It is highly flushed with major insulation；
(5), brushing polyethylene special type special-purpose adhesive：Polyethylene special type special-purpose adhesive is uniformly applied to centre for 360 °
Joint surface, application area are advisable so that major insulation is completely covered but does not contact the semi-conductive layers of both sides；
(6), two-component RTV is smeared：Reconciliation A, B bi-component RTV according to a certain percentage, the RTV after reconciliation is uniformly smeared
On polyethylene special type special-purpose adhesive surface layer, after smearing RTV about half an hours, RTV can solidify completely；
(7) a mark, is made on semi-conductive screen according to shrinkage joint length, positioning baseline is installed as shrinkage connector；It will
Shrinkage connector alignment positioning baseline, taking out core rope shrinks connector, and connector center label and baseline distance are verified in contraction process
From whether meet the requirements and in time left and right adjustment joint location；
(8), the copper shield net cover on connector exterior set, and flat copper braid over braid is overlapped on copper shield net cover, with constant force bullet
Spring is fixed on copper shield net cover；
(9) wrapped water blocking tape partly, is overlapped outside entire connector and does waterproof protective, belt armour is finally wound and does mechanical protection.
Moreover, step (2) in, after copper shield and outer semiconducting layer are removed, preferably outer semiconducting layer edge is fallen
Angle handles or gradient winding semi-conductive adhesive band, and major insulation edge preferably carries out chamfered.
Moreover, step (3) in, if there are residual semiconductive particle, cut or pit in major insulation surface, before cleaning
Grinding process is carried out with the sand paper that nonconducting, divided by maximum granularity is 120.
Moreover, step (4) in, copper conductor winding semi-conductive adhesive band height should not be higher by major insulation, to avoid generate gas
Gap.
Moreover, (5) the polyethylene special type special-purpose adhesive should within an hour use step after ingress of air.
Moreover, step, (6) in the bi-component RTV, component A is adhesive, and B component is curing agent, two component of A, B
Weight ratio is 1~1.5:100, two kinds of components should stand 10 minutes or so to discharge bubble, Ying Jie after being mixed evenly
It is used within 4 hours after touching air.
The advantages and positive effects of the present invention are：
1st, the present invention provides a kind of 10kV three-core cable shrinks transition joints to improve flow of installation, poly- using smearing
The technique of ethylene special type special-purpose adhesive and RTV substitute traditional silicone grease application process, can effectively smooth crosslinked polyethylene it is exhausted
Attachment insulation performance is improved on edge surface layer.
2nd, using technological process of the present invention, scuffing insulating layer can be realized certain by smearing two-component RTV
Consumptive material is saved in reparation in degree.
3rd, operation difficulty can be reduced using technological process of the present invention, improves working efficiency.
Specific embodiment
Describe the embodiment of the present invention in detail below in conjunction with the accompanying drawings；It should be noted that the present embodiment is narrative, no
It is limited, it is impossible to which protection scope of the present invention is limited with this.
A kind of 10kV three-core cable shrinks transition joint improves mounting process, includes the following steps：
(1), peelled off between cable jacket, sheath and core according to size as defined in the instruction for mounting of attachment manufactory
Filler if any steel band, also needs to peel off steel band, steel band stripping length mainly allows bending radius and defined phase spacing by core
To determine, and need to consider to be adapted with the shrinkage set length provided；
(2), defined size peels off the copper shield and outer semiconducting layer of cable to specifications, is removed in outer semiconducting layer
It should prevent plowing from major insulation as possible in the process；After copper shield and outer semiconducting layer are removed, preferably to outer semiconducting layer edge into
Row chamfered or gradient winding semi-conductive adhesive band, major insulation edge preferably carries out chamfered；
(3) cable major insulation, is cleaned with detergent, but is sure not to be allowed to touch outer semiconducting layer；If major insulation surface has
Semiconductive particle, cut or pit are remained, is polished before cleaning with the sand paper that nonconducting, divided by maximum granularity is 120
Processing；
(4), crimp copper connecting tube, and be inserted in shrinkage connector and copper shield net cover respectively, with the matched liquid of conductor cross-section
Pressing tongs point left, center, right crimp copper connecting tube and both ends conducting wire three times；After the completion of crimping, with semi-conductive adhesive band winding copper conductor extremely
It is highly flushed with major insulation；The semi-conductive adhesive band height of copper conductor winding should not be higher by major insulation, to avoid air gap is generated；
(5), brushing polyethylene special type special-purpose adhesive：Polyethylene special type special-purpose adhesive should after ingress of air 1 hour it
Interior use.360 ° of adhesive is uniformly applied to transition joint surface, application area is to be completely covered major insulation but not contact two
The semi-conductive layer of side is advisable, and (polyethylene special type special-purpose adhesive is insulating materials, can absolutely not be applied to outer semiconducting layer and lead
On the semi-conductive adhesive band wound on body)；
(6) two-component RTV (room temperature vulcanized silicone rubber), is smeared：Reconciliation A, B bi-component RTV according to a certain percentage, component A
For adhesive, B component is curing agent, and the weight ratio of two component of A, B is 1~1.5:100, two kinds of components are after being mixed evenly
10 minutes or so should be stood to discharge bubble, should be used within 4 hours after ingress of air；
RTV after reconciliation is uniformly applied to polyethylene special type special-purpose adhesive surface layer, after smearing RTV about half an hours,
RTV can solidify completely；Polyethylene special type special-purpose adhesive smearing can smear bi-component RTV after ten minutes, and bi-component RTV smears 30
It is solidified after minute, cold-shrinkable terminal or connector can be inserted in；Bi-component RTV uses application process, avoids, using brushing technique, avoiding applying
Apply blocked up influence setting time；Bi-component RTV is insulating materials, can absolutely not be applied to what is wound on outer semiconducting layer and conductor
On semi-conductive adhesive band；
(7) a mark, is made on semi-conductive screen according to shrinkage joint length, positioning baseline is installed as shrinkage connector；It will
Shrinkage connector alignment positioning baseline, taking out core rope shrinks connector, and connector center label and baseline distance are verified in contraction process
From whether meet the requirements and in time left and right adjustment joint location；
(8), the copper shield net cover on connector exterior set, and flat copper braid over braid is overlapped on copper shield net cover, with constant force bullet
Spring is fixed on copper shield net cover；
(9) wrapped water blocking tape partly, is overlapped outside entire connector and does waterproof protective, belt armour is finally wound and does mechanical protection.
Claims (4)
1. a kind of 10kV three-core cable shrinks transition joint improves mounting process, it is characterised in that：Include the following steps：
(1), filler between cable jacket, sheath and core is peelled off according to size as defined in the instruction for mounting of attachment manufactory,
If any steel band, also need to peel off steel band, steel band stripping length mainly allows bending radius and defined phase spacing to determine by core
It is fixed, and need to consider to be adapted with the shrinkage set length provided；
(2), defined size peels off the copper shield and outer semiconducting layer of cable to specifications, in outer semiconducting layer stripping process
In should prevent plowing from major insulation as possible；
(3) cable major insulation, is cleaned with detergent, but is sure not to be allowed to touch outer semiconducting layer；
(4), crimp copper connecting tube, and be inserted in shrinkage connector and copper shield net cover respectively, with the matched hydraulic tongs of conductor cross-section
Point left, center, right crimp copper connecting tube and both ends conducting wire three times；After the completion of crimping, with semi-conductive adhesive band winding copper conductor to master
Insulation height flushes；
(5), brushing polyethylene special type special-purpose adhesive：Polyethylene special type special-purpose adhesive is uniformly applied to transition joint for 360 °
Surface, application area are completely covered major insulation but do not contact the semi-conductive layer of both sides；
(6), two-component RTV is smeared：Reconciliation A, B bi-component RTV according to a certain percentage, the RTV after reconciliation is uniformly applied to poly-
Ethylene special type special-purpose adhesive surface layer, after smearing RTV about half an hours, RTV can solidify completely；
(7) a mark, is made on semi-conductive screen according to shrinkage joint length, positioning baseline is installed as shrinkage connector；By shrinkage
Connector alignment positioning baseline, taking out core rope shrinks connector, and connector center label is verified in contraction process is with parallax range
It is no to meet the requirements and control adjustment joint location in time；
(8), the copper shield net cover on connector exterior set, and flat copper braid over braid is overlapped on copper shield net cover, it will with constant force spring
It is fixed on copper shield net cover；
(9) wrapped water blocking tape partly, is overlapped outside entire connector and does waterproof protective, belt armour is finally wound and does mechanical protection；
(5) the polyethylene special type special-purpose adhesive should within an hour use step after ingress of air；
For step (6) in the bi-component RTV, component A is adhesive, and B component is curing agent, and the weight ratio of two component of A, B is 1
~1.5:100, two kinds of components should stand 10 minutes or so to discharge bubble after being mixed evenly, should be 4 after ingress of air
It is used within hour.
2. a kind of 10kV three-core cable shrinks transition joint according to claim 1 improves mounting process, it is characterised in that：
Step (2) in, after copper shield and outer semiconducting layer is removed, chamfered is carried out to outer semiconducting layer edge or gradient is wound
Semi-conductive adhesive band, major insulation edge carry out chamfered.
3. a kind of 10kV three-core cable shrinks transition joint according to claim 1 improves mounting process, it is characterised in that：
Step (3) in, if there are residual semiconductive particle, cut or pit in major insulation surface, before cleaning with nonconducting, most
The sand paper that bulky grain degree is 120 carries out grinding process.
4. a kind of 10kV three-core cable shrinks transition joint according to claim 1 improves mounting process, it is characterised in that：
Step (4) in, copper conductor winding semi-conductive adhesive band height should not be higher by major insulation, to avoid generate air gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510626756.1A CN105244817B (en) | 2015-09-28 | 2015-09-28 | A kind of 10kV three-core cable shrinks transition joint improves mounting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510626756.1A CN105244817B (en) | 2015-09-28 | 2015-09-28 | A kind of 10kV three-core cable shrinks transition joint improves mounting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105244817A CN105244817A (en) | 2016-01-13 |
| CN105244817B true CN105244817B (en) | 2018-07-03 |
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| CN201510626756.1A Active CN105244817B (en) | 2015-09-28 | 2015-09-28 | A kind of 10kV three-core cable shrinks transition joint improves mounting process |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111092395B (en) * | 2019-12-26 | 2021-03-19 | 杭州矽能新材料有限公司 | Fusion type cold-shrink intermediate joint and installation method of cold-shrink terminal |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780195A (en) * | 2012-07-27 | 2012-11-14 | 中国二十二冶集团有限公司 | 10-35KV cold-shrink cable terminal and manufacture method thereof |
| CN103337813B (en) * | 2013-05-30 | 2016-03-30 | 国家电网公司 | Low-voltage cable intermediate joint cold contraction technology |
| CN104242174A (en) * | 2013-06-24 | 2014-12-24 | 鲍震 | Manufacturing method of intermediate cable joint |
| CN103944117A (en) * | 2014-03-11 | 2014-07-23 | 汕头市南帆电器有限公司 | Manufacturing method for intermediate connector of high voltage cable |
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| CN105244817A (en) | 2016-01-13 |
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