CN104751988A - Medium voltage power cable installable under low temperature - Google Patents
Medium voltage power cable installable under low temperature Download PDFInfo
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- CN104751988A CN104751988A CN201510136437.2A CN201510136437A CN104751988A CN 104751988 A CN104751988 A CN 104751988A CN 201510136437 A CN201510136437 A CN 201510136437A CN 104751988 A CN104751988 A CN 104751988A
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- layer
- polypropylene
- wrapping tape
- conductor
- polyvinyl chloride
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Abstract
The invention discloses a medium voltage power cable installable under low temperature, and relates to the technical field of cables. The medium voltage power cable installable under the low temperature comprises a conductor, a polypropylene wrapping tape and a cold resistant type polyvinyl chloride outer sheath layer, wherein a conductor shield layer, a cross-linked polyethylene insulation layer and an insulation shielding layer are sequentially arranged on the exterior of the conductor, a copper strip shielding layer wraps the insulation shielding layer under pressure so as to form a cable core, the cable core is filled with a polypropylene filler yarn, the polypropylene wrapping tape wraps the exterior of the cable core, a cold resistant type polyvinyl chloride inner sheath layer wraps the exterior of the polypropylene wrapping tape under pressure, a polypropylene wrapping tape layer wraps the exterior of the inner sheath layer, and the cold resistant type polyvinyl chloride outer sheath layer wraps the exterior of the polypropylene wrapping tape layer under pressure. The medium voltage power cable installable under the low temperature is reasonable in design, guarantees flexibility of cable structure and is easy to bend due to the fact that a second type stranding copper conductor is used as the conductor, and guarantees stressed uniformity of an outer sheath when bent by using the polypropylene wrapping tape on the wrapping tape layer and arranging the wrapping tape layer on the exterior of an armor layer. The medium voltage power cable installable under the low temperature is suitable for safe installation under minus 20 degree centigrade due to the fact that an inner sheath and the outer sheath are made of cold resistant type polyvinyl chloride sheath material, and arranged in extrusion mode.
Description
Technical field
The present invention relates to cable, particularly relate to a kind of can the medium-pressure power cable of low-temperature mounting.
Background technology
Set point of temperature during major part electric wire product mounting and installation is generally all not less than 0 DEG C, lower than needing when 0 DEG C, heat treated is carried out to cable body, ensure that cable body temperature is not less than 0 DEG C, with prevent when mounting and installation due to insulation and sheath material hardening and occur brittle cracking, cause installation accident.Chinese Regional is wide, especially western and the northern territory cycle in winter is long, and the requirement of laying of cable is not less than 0 DEG C, cannot carry out after one side causes electric wire installing engineering in the winter time, affects to execute project progress; Electric wire is all pack with hophornbeam compound dish on the other hand, and profile is huge, more difficult to electric cable heating, and the heating tool specially do not come, misoperation causes damage to cable quality.
Summary of the invention
For solving above-mentioned technological deficiency, the object of the invention be to provide a kind of can the medium-pressure power cable of low-temperature mounting.
The solution of the present invention is as follows: a kind of can the medium-pressure power cable of low-temperature mounting, comprise conductor, polypropylene band and cold resistance polyvinyl chloride external sheath layer, outside conductor, set gradually conductor shield, crosslinked polyetylene insulated layer, insulation screen; Copper strip shielding layer is extruded on insulation screen and becomes cable core, filler/polypropylene gasket for packing in cable core, the outer wrapped polypropylene band of cable core, cold resistance polyvinyl chloride inner restrictive coating is extruded outside polypropylene band, the outer wrapped polypropylene belting layer of inner restrictive coating, extrudes cold resistance polyvinyl chloride external sheath layer outside polypropylene belting layer.
Steel-tape armouring layer is provided with between described inner restrictive coating and polypropylene belting layer.
The present invention is reasonable in design, conductor is 2 class twisted copper conductors, ensure that the flexibility of the construction of cable, be easy to bending, reduce the destructive power of insulation time bending, belting layer adopts polypropylene band, the uniformity that when belting layer outside armour ensure that cable bend, oversheath is stressed, prevent steel band lap-joint local stress excessive, cause external sheath layer to ftracture.Inner sheath of the present invention and oversheath adopt cold-resistant polrvinyl chloride protective cover material, adopt and extrude mode, are applicable to safety in-20 DEG C of temperature ranges and install.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Wherein: 1, conductor; 2, conductor shield; 3, crosslinked polyetylene insulated layer; 4, insulation screen; 5, copper strip shielding layer; 6, polypropylene gasket for packing; 7, polypropylene band; 8, inner restrictive coating; 9, steel-tape armouring layer; 10, polypropylene belting layer; 11, cold resistance polyvinyl chloride external sheath layer.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described;
As shown in Figure 1, a kind of can the medium-pressure power cable of low-temperature mounting, comprise conductor 1, polypropylene band 7 and cold resistance polyvinyl chloride external sheath layer 11, outside conductor layer 1, set gradually conductor shield 2, crosslinked polyetylene insulated layer 3, insulation screen 4; Copper strip shielding layer 5 is extruded on insulation screen 4 and becomes cable core, filler/polypropylene gasket for packing 6 in cable core, the outer wrapped polypropylene band 7 of cable core, cold resistance polyvinyl chloride inner restrictive coating 8 is extruded outside polypropylene band 7, the outer wrapped polypropylene belting layer 10 of inner restrictive coating 8, extrudes cold resistance polyvinyl chloride external sheath layer 11 outside polypropylene belting layer 10.
Steel-tape armouring layer 9 is provided with between described inner restrictive coating 8 and polypropylene belting layer 10.
Although give detailed description and explanation to the specific embodiment of the present invention above; but what should indicate is; we can carry out various equivalence according to conception of the present invention to above-mentioned execution mode and change and amendment; its function produced do not exceed that specification contains yet spiritual time, all should within protection scope of the present invention.
Claims (2)
1. can the medium-pressure power cable of low-temperature mounting, comprise conductor, polypropylene band and cold resistance polyvinyl chloride external sheath layer, it is characterized in that: outside conductor, set gradually conductor shield, crosslinked polyetylene insulated layer, insulation screen; Copper strip shielding layer is extruded on insulation screen and becomes cable core, filler/polypropylene gasket for packing in cable core, the outer wrapped polypropylene band of cable core, cold resistance polyvinyl chloride inner restrictive coating is extruded outside polypropylene band, the outer wrapped polypropylene belting layer of inner restrictive coating, extrudes cold resistance polyvinyl chloride external sheath layer outside polypropylene belting layer.
2. according to claim 1 a kind of can the medium-pressure power cable of low-temperature mounting, it is characterized in that: between described inner restrictive coating and polypropylene belting layer, be provided with steel-tape armouring layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136437.2A CN104751988A (en) | 2015-03-27 | 2015-03-27 | Medium voltage power cable installable under low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136437.2A CN104751988A (en) | 2015-03-27 | 2015-03-27 | Medium voltage power cable installable under low temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104751988A true CN104751988A (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510136437.2A Pending CN104751988A (en) | 2015-03-27 | 2015-03-27 | Medium voltage power cable installable under low temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104751988A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128615A (en) * | 2016-08-31 | 2016-11-16 | 杭州电缆股份有限公司 | Low line loss conductor manufacture method and low line loss medium-pressure power cable |
| CN107180676A (en) * | 2017-05-09 | 2017-09-19 | 四川新东方电缆集团有限公司 | A kind of anti-freeze cable and its production method |
| CN108281220A (en) * | 2017-11-28 | 2018-07-13 | 安徽卓越电缆有限公司 | A kind of steel-tape armouring pvc sheath cold resistant cable |
| CN114613532A (en) * | 2022-04-25 | 2022-06-10 | 远东电缆有限公司 | Oil-resistant cold-resistant flexible cable and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201213080Y (en) * | 2008-06-27 | 2009-03-25 | 湖南华菱线缆股份有限公司 | Ultra-high temperature shielding control cable |
| CN202711748U (en) * | 2012-08-09 | 2013-01-30 | 天津亿鑫通科技股份有限公司 | Mining 7-core fire-retarding low temperature resistant light-weight signal cable |
| CN203631167U (en) * | 2013-10-30 | 2014-06-04 | 杭州电缆股份有限公司 | Medium-voltage wind energy power cable |
| CN204130202U (en) * | 2014-10-27 | 2015-01-28 | 江苏江扬电缆有限公司 | Thermoplasticity ethylene propylene diene rubber insulated high-strength low temperature resistant cable |
| CN204178768U (en) * | 2014-11-26 | 2015-02-25 | 深圳市东佳信电线电缆有限公司 | A kind of Novel weaved shielding steel-tape armouring environment protection control cable |
| CN204480792U (en) * | 2015-03-27 | 2015-07-15 | 安徽华电线缆集团有限公司 | A kind of can the medium-pressure power cable of low-temperature mounting |
-
2015
- 2015-03-27 CN CN201510136437.2A patent/CN104751988A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201213080Y (en) * | 2008-06-27 | 2009-03-25 | 湖南华菱线缆股份有限公司 | Ultra-high temperature shielding control cable |
| CN202711748U (en) * | 2012-08-09 | 2013-01-30 | 天津亿鑫通科技股份有限公司 | Mining 7-core fire-retarding low temperature resistant light-weight signal cable |
| CN203631167U (en) * | 2013-10-30 | 2014-06-04 | 杭州电缆股份有限公司 | Medium-voltage wind energy power cable |
| CN204130202U (en) * | 2014-10-27 | 2015-01-28 | 江苏江扬电缆有限公司 | Thermoplasticity ethylene propylene diene rubber insulated high-strength low temperature resistant cable |
| CN204178768U (en) * | 2014-11-26 | 2015-02-25 | 深圳市东佳信电线电缆有限公司 | A kind of Novel weaved shielding steel-tape armouring environment protection control cable |
| CN204480792U (en) * | 2015-03-27 | 2015-07-15 | 安徽华电线缆集团有限公司 | A kind of can the medium-pressure power cable of low-temperature mounting |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128615A (en) * | 2016-08-31 | 2016-11-16 | 杭州电缆股份有限公司 | Low line loss conductor manufacture method and low line loss medium-pressure power cable |
| CN107180676A (en) * | 2017-05-09 | 2017-09-19 | 四川新东方电缆集团有限公司 | A kind of anti-freeze cable and its production method |
| CN108281220A (en) * | 2017-11-28 | 2018-07-13 | 安徽卓越电缆有限公司 | A kind of steel-tape armouring pvc sheath cold resistant cable |
| CN114613532A (en) * | 2022-04-25 | 2022-06-10 | 远东电缆有限公司 | Oil-resistant cold-resistant flexible cable and preparation method and application thereof |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150701 |