CN101339828A - Processing method of power cable - Google Patents
Processing method of power cable Download PDFInfo
- Publication number
- CN101339828A CN101339828A CNA2007100711342A CN200710071134A CN101339828A CN 101339828 A CN101339828 A CN 101339828A CN A2007100711342 A CNA2007100711342 A CN A2007100711342A CN 200710071134 A CN200710071134 A CN 200710071134A CN 101339828 A CN101339828 A CN 101339828A
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- Prior art keywords
- cable
- degassing
- degasification
- processing method
- layer
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Links
- 238000003672 processing method Methods 0.000 title claims abstract description 13
- 238000007872 degassing Methods 0.000 claims abstract description 36
- 238000004132 cross linking Methods 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 238000005491 wire drawing Methods 0.000 claims abstract description 4
- 239000006227 byproduct Substances 0.000 claims abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000001035 drying Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract 3
- 230000004888 barrier function Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
The invention discloses a power cable processing method which sequentially comprises the following steps: wire drawing, stranding, three-layer co-extrusion and crosslinking, copper strip shielding, cabling armoring and covering an oversheath; before the step of the three-layer co-extrusion and crosslinking and after the step of the copper strip shielding, the method further comprises a step of electrifying and degassing; the electrifying and degassing step means that the two ends of the cable are connected with a power source to form a closed loop, and the residual gas of the internal crosslinking by-product is removed after electrifying the cable for some time. The method of the invention electrifies and degasses the cable after the step of the three-layer co-extrusion and crosslinking; compared with most present degassing processes of drying rooms, the electrifying and degassing step of the invention greatly reduces the degassing time, and generally the degassing process can be finished in less than one day; the power cable processing method has the advantages that the degassing efficiency is high, the production efficiency of the whole cable processing is improved, the delivery period is shortened, the energy source and the production space are economized, and the production benefit of enterprises is improved.
Description
[technical field]
The present invention relates to the processing method of power cable.
[background technology]
Be used to transmit and distribute the cable of electric energy be usually used in the underground electrical network in city, power station lead line, industrial and mining enterprises in-line power and cross river, the submarine transmission line in sea excessively.In power circuit, the shared proportion of cable increases just gradually.
Power cable generally be embedded in the soil or be laid in indoor, raceway groove, in the tunnel, insulation distance is little between line, without shaft tower, takes up an area of fewly, space on the not occupation of land face is subjected to weather conditions and surrounding environment influence little substantially, transmission performance is stable, the reliability height.Therefore be widely used in every profession and trade.
High-voltage cross-linking polythene cable can produce some accessory substances in cross-linking process, inner if these accessory substances remain in insulation, can reduce the insulation quality, and the expansion of residual gas can influence cooperating of cable and joint, directly influences the safe operation of cable.All to carry out degasification in the cable course of processing to insulating barrier.Present processing technology is to carry out high-temperature degassing or natural degasification behind three-layer co-extruded cross-linking.High-temperature degassing is meant the semi-finished product behind the three-layer co-extruded cross-linking is placed in the drying room environment about 70 ℃, carries out the air heat degasification; The nature degasification is that the cable semi-products are placed the longer fate of atmosphere.
It is long that the defective of nature degasification maximum is exactly the degasification time.Insulating barrier is the time degasification fully that the cable of 4.5mm need be placed in the room temperature environment 4-5 days; Insulating barrier is the time degasification fully that the cable of 10.5mm need be placed in the room temperature environment 6-7 days.The degasification time has been shortened in the drying room degasification to a certain extent, and insulating barrier is the time degasification fully that the cable of 17mm need be placed in the environment about 70 ℃ 8-9 days; Along with the continuous increase of thickness of insulating layer, the time of required natural degasification or drying room degasification is just long more, and production efficiency is just low more, and product is also long more delivery date, often causes and delays delivery date, influences the performance of enterprises.
[summary of the invention]
Purpose of the present invention solves the problems of the prior art exactly, proposes a kind of processing method of power cable, can shorten the degasification time, and energy savings is enhanced productivity, and shortens delivery date.
For achieving the above object, the present invention proposes a kind of processing method of power cable, may further comprise the steps successively: wire drawing, twisted wire, three-layer co-extruded cross-linking, copper strips shielding, stranding armouring and cover oversheath, after the three-layer co-extruded cross-linking step, also comprise that energising deaeration step, described energising degasification are that two ends with cable are connected the formation closed-loop path with power supply before the copper strips mask steps, to cable energising some hrs, remove inner as the product residual gas.
As preferably, power supply adopts voltage regulator in the described energising deaeration step.
As preferably, also adopt ammeter in the described energising deaeration step and regulate resistance, described ammeter, adjusting resistance string are associated between cable and the power supply.
Beneficial effect of the present invention: the present invention behind three-layer co-extruded cross-linking to the cable degasification of switching on, the energising degasification is than the better effects if of nature degasification, and the degasification time shortens greatly, generally just can finish degassing procedure less than one day time, the degassing efficiency height, improve the production efficiency of whole cable processing, shortened delivery date.Improved enterprise's productivity effect.
Feature of the present invention and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the process chart of processing method of power cable of the present invention;
Fig. 2 is the connection diagram of energising deaeration step in the processing method of power cable of the present invention.
[embodiment]
As shown in Figure 1, processing method of power cable may further comprise the steps successively: wire drawing 1, twisted wire 2, three-layer co-extruded cross-linking 3, energising degasification 4, copper strips shielding 5, stranding armouring 6 and cover oversheath 7.
Energising degasification 4: as shown in Figure 2, the two ends of cable 21 are connected with power supply 22, the formation closed-loop path switched on 10-30 hour to cable, removed inner accessory substance residual gas.The power supply 22 preferred voltage regulators that adopt.Also adopt ammeter 23 and regulate resistance 24, described ammeter 23, adjusting resistance 24 are connected between cable 21 and the power supply 22.
The foregoing description is to explanation of the present invention, is not limitation of the invention, any scheme after the simple transformation of the present invention is all belonged to protection scope of the present invention.
Claims (3)
1. processing method of power cable, may further comprise the steps successively: wire drawing (1), twisted wire (2), three-layer co-extruded cross-linking (3), copper strips shielding (5), stranding armouring (6) and cover oversheath (7), it is characterized in that: after three-layer co-extruded cross-linking (3) step, also comprise energising degasification (4) step before copper strips shielding (5) step, described energising degasification (4) is that the two ends with cable (21) are connected with power supply (22), constitute the closed-loop path, to the cable energising regular hour, remove inner byproduct gas.
2. processing method of power cable as claimed in claim 1 is characterized in that: power supply (22) adopts voltage regulator in described energising degasification (4) step.
3. processing method of power cable as claimed in claim 1, it is characterized in that: also adopt ammeter (23) in described energising degasification (4) step and regulate resistance (24), described ammeter (23), adjusting resistance (24) are connected between cable (21) and the power supply (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100711342A CN101339828B (en) | 2007-09-14 | 2007-09-14 | Processing method of power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100711342A CN101339828B (en) | 2007-09-14 | 2007-09-14 | Processing method of power cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101339828A true CN101339828A (en) | 2009-01-07 |
| CN101339828B CN101339828B (en) | 2010-11-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100711342A Active CN101339828B (en) | 2007-09-14 | 2007-09-14 | Processing method of power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101339828B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013288A (en) * | 2010-10-09 | 2011-04-13 | 昆明电缆集团股份有限公司 | Method for effectively preventing sheath of high-pressure cross-linked cable from swelling |
| CN104637623A (en) * | 2015-02-03 | 2015-05-20 | 内蒙古仁达特种电缆有限公司 | Watertight power cable and processing technology thereof |
| CN104979051A (en) * | 2015-06-03 | 2015-10-14 | 浙江万马股份有限公司 | 66-500kV crosslinked cable short-degassing online treatment process |
| CN108948728A (en) * | 2018-07-02 | 2018-12-07 | 安徽坤和电气有限公司 | The preparation method of flame retardant cable |
| CN108962490A (en) * | 2018-07-02 | 2018-12-07 | 安徽坤和电气有限公司 | The preparation method of high-strength cable |
| CN108986960A (en) * | 2018-07-02 | 2018-12-11 | 安徽坤和电气有限公司 | The preparation method of soft oil resistant cable |
| CN109036707A (en) * | 2018-07-02 | 2018-12-18 | 安徽坤和电气有限公司 | The preparation method of anti-corrosion cable |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037638C (en) * | 1992-04-11 | 1998-03-04 | 刘剑鸣 | Cable with ventilating return passage and moisture-removing method thereof |
| CN1307654C (en) * | 2002-08-05 | 2007-03-28 | 住友电气工业株式会社 | Method of producing superconductive wire material |
| CN2622896Y (en) * | 2003-04-11 | 2004-06-30 | 上海南大集团有限公司 | Self-controlling cable blowoff closure head |
| CN1929224B (en) * | 2006-09-08 | 2010-11-03 | 江苏圣安电缆有限公司 | Switching method and mould for crosslinked polyethylene insulated power cable |
-
2007
- 2007-09-14 CN CN2007100711342A patent/CN101339828B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013288A (en) * | 2010-10-09 | 2011-04-13 | 昆明电缆集团股份有限公司 | Method for effectively preventing sheath of high-pressure cross-linked cable from swelling |
| CN104637623A (en) * | 2015-02-03 | 2015-05-20 | 内蒙古仁达特种电缆有限公司 | Watertight power cable and processing technology thereof |
| CN104979051A (en) * | 2015-06-03 | 2015-10-14 | 浙江万马股份有限公司 | 66-500kV crosslinked cable short-degassing online treatment process |
| CN104979051B (en) * | 2015-06-03 | 2017-01-11 | 浙江万马股份有限公司 | 66-500kV crosslinked cable short-degassing online treatment process |
| CN108948728A (en) * | 2018-07-02 | 2018-12-07 | 安徽坤和电气有限公司 | The preparation method of flame retardant cable |
| CN108962490A (en) * | 2018-07-02 | 2018-12-07 | 安徽坤和电气有限公司 | The preparation method of high-strength cable |
| CN108986960A (en) * | 2018-07-02 | 2018-12-11 | 安徽坤和电气有限公司 | The preparation method of soft oil resistant cable |
| CN109036707A (en) * | 2018-07-02 | 2018-12-18 | 安徽坤和电气有限公司 | The preparation method of anti-corrosion cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101339828B (en) | 2010-11-17 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG MORNING CABLE CO., LTD. Free format text: FORMER OWNER: ZHU SHUILIANG Effective date: 20110510 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110510 Address after: 314204 Chenguang Industrial Zone, Tong Town, Zhejiang, Pinghu Patentee after: Zhejiang Morning Cable Co., Ltd. Address before: 314204 Chenguang Industrial Zone, Tong Town, Zhejiang, Pinghu Patentee before: Zhu Shuiliang |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Power cable processing method Effective date of registration: 20201203 Granted publication date: 20101117 Pledgee: Dushangang sub branch of Zhejiang Pinghu Rural Commercial Bank Co., Ltd Pledgor: ZHEJIANG CHENGUANG CABLE Co.,Ltd. Registration number: Y2020330001100 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210617 Granted publication date: 20101117 Pledgee: Dushangang sub branch of Zhejiang Pinghu Rural Commercial Bank Co., Ltd Pledgor: ZHEJIANG CHENGUANG CABLE Co.,Ltd. Registration number: Y2020330001100 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |