CN101252266A - Mounting process of three-core cable shrink terminal - Google Patents
Mounting process of three-core cable shrink terminal Download PDFInfo
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- CN101252266A CN101252266A CNA2008101039785A CN200810103978A CN101252266A CN 101252266 A CN101252266 A CN 101252266A CN A2008101039785 A CNA2008101039785 A CN A2008101039785A CN 200810103978 A CN200810103978 A CN 200810103978A CN 101252266 A CN101252266 A CN 101252266A
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Abstract
The invention discloses installation technique of a cold shrinkable terminal of a three core cable, belonging to power transmission system in power cable installation field. The technique includes the following steps: unwrapping the outer cover of the cable, installing the mutually insulated ground wire and the reversely folded ground wire, sheathing a three-finger sleeve onto the root of the three core cable, respectively sheathing the cold shrinkable jackets onto the cable cores which are provided with copper shields, and finally installing the cold shrinkable terminal and crimping wiring terminals on the cable cores with copper shields. In the technique, sealing and insulation operations are critical to the long time safe operation of the power transmission system above 15kv, and the power transmission system the damp-proof, explosion-proof and flame-retardant safety properties. The installation technique is simple and easy and is highly efficient.
Description
Technical field
The invention belongs to power cable mounting technology field in the electrical power transmission system, particularly a kind of mounting process of three-core cable shrink terminal.
Background technology
Traditional thermal shrinkage type cable termination mostly is pottery greatly or other insulating material are made insulator, material does not have elasticity, adopt wrapped formula, combine not tight with cable core or cable sheathing, easy watered and wetting, electric lower with mechanical strength, the mounting process more complicated, parts damage easily in the installation process, thereby be subjected to the restriction of material behavior, the interface field intensity is on the low side, is difficult to satisfy the needs of the above electrical power transmission system long-term safety operation of 15kv, and traditional mounting technique does not possess protection against the tide, safety function such as explosion-proof and fire-retardant.
Summary of the invention
The purpose of this invention is to provide a kind of mounting process of three-core cable shrink terminal, it is characterized in that, concrete installation steps are as follows:
1) make moist in order to reduce cable end, pollution or the uneven influence that brings, the cable end strip off cable jacket 1 after the alignment is exposed three cable cores;
2) getting constant force spring 3 is clamped on ground wire 2 on the steel armour, and on constant force spring, cut the steel armour, excise inner sheath after measuring 10mm backward by excision steel armour end, and wrap up a circle PVC tape respectively in the end of cable core and mark 6, can prevent that copper shield 5 is scattered;
3) with single-coated foam 4 constant force spring 3 is twined some circles, make it and cable jacket 1 smooth connection, end volume one with another ground wire encloses again, insert the three-core cable root, and with screwdriver to the root push-tight, will remain ground wire and enclose the three-phase copper shield 5 outsides downward reflexed behind the circle of reeling, form reflexed ground wire 7, with a constant force spring 3 reflexed ground wire 7 is tightened again, with single-coated foam 4 constant force spring 3 is wrapped, and ground wire 2 and reflexed ground wire 7 separately are wrapped on the cable jacket 1;
4) get tri-finger stall 8,10 extractions of supporter core rope in the tri-finger stall pipe 9 are a bit of, be inserted in the three-core cable root then gently, extract supporter core ropes 10 in the tri-finger stall pipe 9 out, extract supporter core ropes 10 in the tri-finger stall 8 again out;
5) cable core that respectively shrinkage protecting pipe 11 is inserted in band copper shield 5 overlaps 10mm at least to fingerstall pipe 9;
6) along the last tip cut-off copper shield 5 of shrinkage protecting pipe 11, expose semi-conductive layer and main insulation, outwards the semiconductive layer incision position is whittled into the inclined-plane with guarded blade utility knife by main insulation respectively, and on shrinkage protecting pipe 11, carries out mark 6 location, note not polishing semiconductive layer with the PVC self-adhesive tape;
7) clean main insulation surface, confirm the no conductive particle in main insulation surface, evenly smear silicone grease on its surface, take out the shrinkage terminal then respectively, to carry out mark 6 location with the PVC self-adhesive tape on the shrinkage terminal termination aligning shrinkage protecting pipe 11, be inserted in the cable core of band main insulation 12, extract supporter core rope 10 out;
8) 5mm on the other end of shrinkage terminal is measured at the place terminal hole depth and add 5mm, excise unnecessary shrinkage protecting pipe and expose the cable core of being with main insulation 12, and divest main insulation, the main insulation incision position is whittled into fillet, expose the cable core of being with copper shield, and be inserted in binding post, crimping is firm, removes burr, and be whittled at crimping place and main insulation incision position and twine single-coated foam on the fillet, thickness is consistent with the top of shrinkage terminal, forms the tapered overlap joint of smooth excessiveness, and the sealed insulation end;
9) will seal mark tube core supporter core rope respectively and extract the termination out, be inserted in binding post then, and the top of cover part shrinkage terminal, extract supporter core rope 10 out, finish the installation of three-core cable shrink terminal.
The ground wire 2 of described step 3 and reflexed ground wire 7 will guarantee the two mutually insulated;
Described step 5 also comprises, when fruit shrinkage terminal mounting process is out of doors during terminal applies, then the fingerstall end after shrinking upwards to be dug, and digging the cable jacket winding single-coated foam 4 of part, after smearing a circle binding agent, turn back fingerstall, and twine single-coated foam 4 enhanced leaktightness in fingerstall end and cable jacket junction.
Described shrinkage terminal applies in step 5,7,8 and 9, is smeared binding agent in the junction of parts when the open air, or twines the single-coated foam enhanced leaktightness in the junction.
Effect intentionally of the present invention is to adopt shrinkage terminal assembling electrical power transmission system, characteristics according to the shrinkage terminal adopt new mounting process, this technology have mounting process simple, understand, grasp easily, high efficiency, can satisfy the needs of the above electrical power transmission system long-term safety of 15ky operation, possess protection against the tide, safety function such as explosion-proof and fire-retardant.
Description of drawings
Fig. 1 is the strip off cable jacket, exposes three cable core process schematic representations.
Fig. 2 is for installing the process schematic representation of tri-finger stall.
Fig. 3 is a cable core main insulating layer treatment process schematic diagram.
Fig. 4 is three-core cable shrink terminal mounting structure figure.
Embodiment
The invention provides a kind of mounting process of three-core cable shrink terminal.Below in conjunction with accompanying drawing, be example with the 15KV mounting process of three-core cable shrink terminal, specify installation steps of the present invention:
1) make moist in order to reduce cable end, pollution or the uneven influence that brings, the cable after the alignment is measured more than the 900mm backward by cable end, open stripping cable jacket 1 and expose three cable cores;
2) getting constant force spring 3 is clamped on ground wire 2 on the steel armour, and on constant force spring, cut the steel armour, after measuring 10mm backward, steel armour end excises inner sheath by excising, note not injuring copper shield 5, and wrap up red, yellow, the green three coloring agent bands of a circle PVC in the end of cable core respectively and mark 6, prevent that copper shield 5 is scattered (as shown in Figure 1);
3) with single-coated foam 4 constant force spring 3 is twined some circles, make it and cable jacket 1 smooth connection, thickness can not surpass cable jacket 2mm, end volume one with another ground wire encloses again, insert the three-core cable root, and with screwdriver to the root push-tight, to remain ground wire and enclose three-phase copper shield 5 outsides coiling one circle back reflexed downwards, form reflexed ground wire 7, with a constant force spring 3 reflexed ground wire 7 is tightened, pay special attention to, ground wire 2 and reflexed ground wire 7 are separately, not on same axis, guarantee the two mutually insulated;
4) with single-coated foam 4 constant force spring 3 is wrapped, and ground wire 2 and reflexed ground wire 7 separately are wrapped on the cable jacket 1, the thickness of single-coated foam 4 can not surpass cable jacket 2mm (as shown in Figure 1);
5) get tri-finger stall 8,10 extractions of supporter core rope in the tri-finger stall pipe 9 are a bit of, be inserted in the three-core cable root then gently, extract supporter core ropes 10 in the tri-finger stall pipe 9 out, extract supporter core ropes 10 in the tri-finger stall 8 again out; When fruit shrinkage terminal mounting process is out of doors during terminal applies, then the fingerstall end after shrinking upwards to be dug, and digging the cable jacket winding single-coated foam 4 of part, after smearing a circle binding agent, turn back fingerstall, and twine single-coated foam 4 enhanced leaktightness in fingerstall end and cable jacket junction.
6) extract out supporter core rope in the shrinkage protecting pipe 11 10 a bit of respectively, the cable core that is inserted in band copper shield 5 then gently overlaps 10mm at least to fingerstall pipe 9, extract supporter core rope 10 (as shown in Figure 2) in the shrinkage protecting pipe 11 out, if outdoor terminal will be smeared the binding agent enhanced leaktightness in lap-joint;
7) along the last tip cut-off copper shield 5 of shrinkage protecting pipe 11, but do not injure semi-conductive layer, again that the last tip cut-off 30mm of shrinkage sheath is long semi-conductive layer, note not injuring main insulation, outwards the semiconductive layer incision position is whittled into the inclined-plane with guarded blade utility knife by main insulation respectively, measure 50mm backward at the semiconductive layer incision position respectively then, carry out mark 6 location (as shown in Figure 3), note not polishing semiconductive layer with the PVC self-adhesive tape;
8) with emery cloth strip cleaning main insulation surface, confirm the no conductive particle in main insulation surface, then with cleaning paper cleaning main insulation surface, after careful inspection main insulation surface does not have no conductive particle and impurity, evenly smear silicone grease on its surface, take out the shrinkage terminal then respectively, extract supporter core rope 10 out termination, the direction that makes progress with shrinkage terminal termination is inserted in the cable core of band main insulation 12 respectively, to carry out mark 6 location with the PVC self-adhesive tape on the shrinkage terminal termination aligning shrinkage protecting pipe 11, extract supporter core rope 10 out, if outdoor terminal will be smeared the binding agent enhanced leaktightness in lap-joint:
9) measure the terminal hole depth and add 5mm at the other end of shrinkage terminal is made progress 5mm place, excise unnecessary shrinkage protecting pipe and expose the cable core of being with main insulation 12, and divest main insulation, the main insulation incision position is whittled into fillet, expose the cable core of being with copper shield, and be inserted in binding post, crimping is firm, remove burr, and be whittled at crimping place and main insulation incision position and twine single-coated foam on the fillet, thickness is consistent with the top of shrinkage terminal, forms the tapered overlap joint of smooth excessiveness, and the sealed insulation end, if outdoor terminal will be smeared the binding agent enhanced leaktightness in lap-joint.
10) will seal mark tube core supporter core rope respectively and extract the termination out, be inserted in binding post then, and the top of cover part shrinkage terminal, extract 10 (as shown in Figure 4) of supporter core rope out; If outdoor terminal will twine single-coated foam 4 enhanced leaktightness in lap-joint.
Claims (5)
1. a mounting process of three-core cable shrink terminal is characterized in that, concrete installation steps are as follows:
1) make moist in order to reduce cable end, pollution or the uneven influence that brings, the cable end strip off cable jacket (1) after the alignment is exposed three cable cores;
2) getting constant force spring (3) is clamped on ground wire (2) on the steel armour, and on constant force spring, cut the steel armour, excise inner sheath after measuring 10mm backward by excision steel armour end, and wrap up a circle single-coated foam respectively in the end of cable core and mark (6), can prevent that copper shield (5) is scattered;
3) with adhesive tape (4) constant force spring (3) is twined some circles, make it and cable jacket (1) smooth connection, end volume one with another ground wire encloses again, insert the three-core cable root, and with screwdriver to the root push-tight, to remain ground wire and enclose three-phase copper shield (5) outside coiling one circle back reflexed downwards, form reflexed ground wire (7), use a constant force spring (3) that reflexed ground wire (7) is tightened again, with single-coated foam (4) constant force spring (3) is wrapped, and ground wire (2) and reflexed ground wire (7) separately are wrapped on the cable jacket (1);
4) get tri-finger stall (8), tri-finger stall pipe (9) interior supporter core rope (10) extraction is a bit of, be inserted in the three-core cable root then gently, extract tri-finger stall pipe (9) interior supporter core rope (10) out, extract tri-finger stall (8) interior supporter core rope (10) again out;
5) cable core that respectively shrinkage protecting pipe (11) is inserted in band copper shield (5) overlaps 10mm at least to fingerstall pipe (9);
6) along the last tip cut-off copper shield (5) of shrinkage protecting pipe (11), expose semi-conductive layer and main insulation, outwards the semiconductive layer incision position is whittled into the inclined-plane with guarded blade utility knife by main insulation respectively, and on shrinkage protecting pipe (11), carries out mark (6) location, note not polishing semiconductive layer with self-adhesive tape;
7) clean main insulation surface, confirm the no conductive particle in main insulation surface, evenly smear silicone grease on its surface, take out the shrinkage terminal then respectively, aim at shrinkage protecting pipe (11) with shrinkage terminal termination and upward carry out mark (6) location with self-adhesive tape, be inserted in the cable core of band main insulation (12), extract supporter core rope (10) out;
8) 5mm on the other end of shrinkage terminal is measured at the place terminal hole depth and add 5mm, excise the cable core that unnecessary shrinkage protecting pipe exposes band main insulation (12), and divest main insulation, the main insulation incision position is whittled into fillet, expose the cable core of being with copper shield, and be inserted in binding post, crimping is firm, removes burr, and be whittled at crimping place and main insulation incision position and twine single-coated foam on the fillet, thickness is consistent with the top of shrinkage terminal, forms the tapered overlap joint of smooth excessiveness, and the sealed insulation end;
9) will seal mark tube core supporter core rope respectively and extract the termination out, be inserted in binding post then, and the top of cover part shrinkage terminal, extract supporter core rope (10) out, finish the installation of three-core cable shrink terminal.
2. according to the described mounting process of three-core cable shrink terminal of claim 1, it is characterized in that ground wire of described step 3 (2) and reflexed ground wire (7) will guarantee the two mutually insulated;
3. according to the described mounting process of three-core cable shrink terminal of claim 1, it is characterized in that, described step 5 also comprises, when fruit shrinkage terminal mounting process is out of doors during terminal applies, then the fingerstall end after shrinking upwards to be dug, and, after smearing a circle binding agent, turn back fingerstall, and twine single-coated foam (4) enhanced leaktightness in fingerstall end and cable jacket junction digging the cable jacket winding single-coated foam (4) of part.
4. according to the described mounting process of three-core cable shrink terminal of claim 1, it is characterized in that described shrinkage terminal applies in step 5,7,8 and 9, is smeared binding agent in the junction of parts when the open air, or twine the single-coated foam enhanced leaktightness in the junction.
5. according to the described mounting process of three-core cable shrink terminal of claim 1, it is characterized in that described single-coated foam is a PVC tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101039785A CN101252266B (en) | 2008-04-14 | 2008-04-14 | Mounting process of three-core cable shrink terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101039785A CN101252266B (en) | 2008-04-14 | 2008-04-14 | Mounting process of three-core cable shrink terminal |
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| CN101252266A true CN101252266A (en) | 2008-08-27 |
| CN101252266B CN101252266B (en) | 2010-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101039785A Expired - Fee Related CN101252266B (en) | 2008-04-14 | 2008-04-14 | Mounting process of three-core cable shrink terminal |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340116A (en) * | 2011-09-02 | 2012-02-01 | 巩义市供电公司 | Method for connecting ground wire of power cable terminal |
| 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 |
| CN103001104A (en) * | 2012-12-13 | 2013-03-27 | 辽宁省电力有限公司锦州供电公司 | Method for cutting copper shielding layer of 10kV/35kV electric power distribution cables |
| CN103124060A (en) * | 2012-12-28 | 2013-05-29 | 深圳市沃尔核材股份有限公司 | Cold shrink terminal for optical fiber composite medium-voltage cable and mounting method of cold shrink terminal |
| CN104113019A (en) * | 2014-05-30 | 2014-10-22 | 南通贝斯特船舶与海洋工程设计有限公司 | Manufacture method of multi-core high-voltage cable terminal |
| CN107611861A (en) * | 2017-10-26 | 2018-01-19 | 天津市金钟东大电力安装工程有限责任公司 | A kind of manufacturing cable head technique |
| CN108081567A (en) * | 2017-12-26 | 2018-05-29 | 深圳市沃尔核材股份有限公司 | The production method and production system of a kind of pyrocondensation branch fingerstall |
| CN110011232A (en) * | 2019-03-28 | 2019-07-12 | 北京首都机场动力能源有限公司 | A kind of interconnection method of 10kV three-core cable |
| CN110707611A (en) * | 2019-11-08 | 2020-01-17 | 南京聚联输变电安装有限责任公司 | Improved installation process for cold-shrinkage terminal of three-core cable |
-
2008
- 2008-04-14 CN CN2008101039785A patent/CN101252266B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340116A (en) * | 2011-09-02 | 2012-02-01 | 巩义市供电公司 | Method for connecting ground wire of power cable terminal |
| 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 |
| CN103001104A (en) * | 2012-12-13 | 2013-03-27 | 辽宁省电力有限公司锦州供电公司 | Method for cutting copper shielding layer of 10kV/35kV electric power distribution cables |
| CN103124060A (en) * | 2012-12-28 | 2013-05-29 | 深圳市沃尔核材股份有限公司 | Cold shrink terminal for optical fiber composite medium-voltage cable and mounting method of cold shrink terminal |
| CN104113019A (en) * | 2014-05-30 | 2014-10-22 | 南通贝斯特船舶与海洋工程设计有限公司 | Manufacture method of multi-core high-voltage cable terminal |
| CN104113019B (en) * | 2014-05-30 | 2016-09-07 | 南通贝斯特船舶与海洋工程设计有限公司 | A kind of preparation method of multicore hv cable termination |
| CN107611861A (en) * | 2017-10-26 | 2018-01-19 | 天津市金钟东大电力安装工程有限责任公司 | A kind of manufacturing cable head technique |
| CN108081567A (en) * | 2017-12-26 | 2018-05-29 | 深圳市沃尔核材股份有限公司 | The production method and production system of a kind of pyrocondensation branch fingerstall |
| CN110011232A (en) * | 2019-03-28 | 2019-07-12 | 北京首都机场动力能源有限公司 | A kind of interconnection method of 10kV three-core cable |
| CN110707611A (en) * | 2019-11-08 | 2020-01-17 | 南京聚联输变电安装有限责任公司 | Improved installation process for cold-shrinkage terminal of three-core cable |
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| Publication number | Publication date |
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| CN101252266B (en) | 2010-10-27 |
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Owner name: BEIJING GUODIAN RUIFENG ELECTRICAL CO., LTD. Free format text: FORMER NAME: GFE SYNTHETIC ELECTRIC (BEIJING) CO., LTD. |
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Address after: 101500, oasis Industrial Development Zone, 30-2 West Avenue, Beijing, Miyun Patentee after: BEIJING GUODIAN RUIFENG ELECTRIC CO., LTD. Address before: 101500, oasis Industrial Development Zone, 30-2 West Avenue, Beijing, Miyun Patentee before: Gfe Synthetic Electric (Beijing) Co., Ltd. |
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