CN201129562Y - Insulated / elastic stress material composite thermal contraction pipe - Google Patents
Insulated / elastic stress material composite thermal contraction pipe Download PDFInfo
- Publication number
- CN201129562Y CN201129562Y CNU2007201705683U CN200720170568U CN201129562Y CN 201129562 Y CN201129562 Y CN 201129562Y CN U2007201705683 U CNU2007201705683 U CN U2007201705683U CN 200720170568 U CN200720170568 U CN 200720170568U CN 201129562 Y CN201129562 Y CN 201129562Y
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- insulation
- elastic stress
- layer body
- shrinkable tube
- cable
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Abstract
The utility model discloses an insulation/flexible stress composite thermal contract pipe, belonging to electric material technical field, wherein the pipe comprises an inner layer and an outer layer, the surface of the inner layer is provided with a continuous flexible stress control material and the outer layer is a thermal contact material. The inner layer is provided with a continuous flexible stress control material which can be effectively adhered with the thermal contact material at outer layer, the flexible material can expand along with the expansion of a cable, and when the cable is cooled and contracts, the normal-temperature memory effect of the flexible material can accelerate the contraction and prevent clearance to tightly sheath the pipe on a cable terminal or a intermedium body to prevent clearance.
Description
Technical field
The utility model relates to a kind of heat-shrinkable tube, specifically is meant a kind of cable hot shrinkage terminal or middle insulation/compound heat-shrinkable tube of elastic stress material that connects of being applied to.
Background technique
In existing pyrocondensation cable accessory technology, in order to solve the problem that mesohigh power cable screen layer gap electric field stress is concentrated.Major part is to adopt the pyrocondensation stress tube of individual layer to be assemblied in above-mentioned jointing, insulation tube is installed as isolation layer above stress tube.But, continuous variation along with the cable load, because material contracting with heat does not have contracting property under the normal temperature state, power cable is after operation a period of time, do not paste because the jointing of pyrocondensation stress tube between insulation tube and cable is fixing, make easily between insulation tube and the stress tube and produce the slit, cause the generation of partial discharge, long-play can cause the generation of power cable breakdown.
The model utility content
The technical problem that the utility model embodiment will solve provides a kind of compound heat-shrinkable tube, and provide a kind of slit of avoiding producing between electric power stress tube and cable and the insulation tube, thereby prolong the pyrocondensation cable accessory insulation/compound heat-shrinkable tube of elastic stress material in working life.
For solving the problems of the technologies described above, the embodiment of insulation provided by the utility model/compound heat-shrinkable tube of elastic stress material is achieved through the following technical solutions:
A kind of insulation/compound the heat-shrinkable tube of elastic stress material, wherein said insulation/compound heat-shrinkable tube of elastic stress material is divided into internal layer body and outer layer body, described internal layer body is provided with continuous pyrocondensation elastic stress control material, and the outer layer body that is arranged on described internal layer outside is the heat shrinkage insulation material.
Technique scheme has following beneficial effect: because of the internal layer at the compound heat-shrinkable tube of insulation/elastic stress material is provided with continuous elastic stress control material, this stress control material can form effectively bonding with outer field pyrocondensation insulating material, and elastic material can expand along with the expansion of cable, when the cable cooling is shunk, the normal temperature memory effect of elastic material is impelled its contraction, prevent that effectively the gap from producing, take place thereby effectively reach the hidden danger of avoiding the power cable breakdown.
Description of drawings
Fig. 1 is the compound heat-shrinkable tube cross section structure of an insulation/elastic stress material schematic representation among the utility model embodiment;
Fig. 2 is applied to the schematic representation of midium voltage cable for the compound heat-shrinkable tube of insulation/elastic stress material among the utility model embodiment.
Embodiment
The utility model embodiment provides a kind of insulation/compound heat-shrinkable tube of elastic stress material.The internal layer body of the compound heat-shrinkable tube of insulation/elastic stress material is provided with continuous elastic stress control material, this continuous elastic stress control material can form effectively bonding with cable insulation and outer field material contracting with heat, compound heat-shrinkable tube is closely overlapped to be on cable termination or the intermediate host, prevent that effectively the gap from producing, take place thereby effectively reach the hidden danger of avoiding the power cable breakdown.Describe the utility model embodiment in detail below in conjunction with accompanying drawing.
With reference to figure 1, the outer layer body 2 that this insulation/the compound heat-shrinkable tube of elastic stress material comprises internal layer body 1 and places internal layer body 1 outside.Continuous elastic stress control material on the internal layer body 1.This elastic stress control material can be the blend that silicone rubber, ethylene propylene rubber or polyamide, fourth cyanogen glue, butadiene-styrene rubber or above-mentioned any two or more chemical substance are mixed, by adding organic or mineral filler, the colloid permittivity that makes its internal layer greater than 10, volume resistivity is greater than 10
8Ω .cm.Outer layer body 2 is made of crosslinking with radiation type crystalline polyolefin, and crosslinking with radiation type crystalline polyolefin can be the blend that the blend that mixes of high density polyethylene pipe (HDPE) or polyethylene from high pressure process (LDPE) or linear polyethylene (LLDPE) or polyethylene or dimly-ethyl acrylate (EEA) or above-mentioned any two kinds of chemical substances or above-mentioned chemical substance are mixed.By fusion co-extrusion technology or continuously coating technology above-mentioned colloid and the crosslinking with radiation type crystalline polyolefin with hot melt character are combined into compound heat-shrinkable tube.
With reference to figure 2, this mode of execution is that compound heat-shrinkable tube is applied in the midium voltage cable: described cable is followed successively by cable core 7, cable insulation 6, cable semiconductive layer 5, cable copper shield 4, cable jacket 3 from inside to outside, and cable termination is connected with the metal connection terminal.Directly over cable semiconductive layer 5 gaps, cable copper shield 4 gaps and cable insulation 6, use the compound heat-shrinkable tube of insulation/elastic stress material.
Because the continuous elastic stress control material of internal layer body 1 can form effectively bonding with cable insulation 6, and elastic material can expand along with the expansion of cable, when the cable cooling is shunk, the normal temperature memory effect of elastic material is impelled its contraction, preventing effectively that the gap from producing can avoid producing the slit between power cable and the heat-shrink tube, prolongs the pyrocondensation cable accessory purpose in working life thereby reach.
In addition, above-mentioned insulation/compound heat-shrinkable tube of elastic stress material can utilize high-power electron beam or high energy gamma ray, carries out crosslinking with radiation, and heating expands into insulation/compound heat-shrinkable tube of elastic stress material then, the feasible effect that reaches pyrocondensation.
More than a kind of insulation/compound heat-shrinkable tube of elastic stress material that the utility model embodiment is provided be described in detail, for one of ordinary skill in the art, thought according to the utility model embodiment, part in specific embodiments and applications all can change, in sum, this description should not be construed as restriction of the present utility model.
Claims (4)
1, a kind of insulation/compound heat-shrinkable tube of elastic stress material, it is characterized in that: described insulation/compound heat-shrinkable tube of elastic stress material is divided into internal layer body and outer layer body, described internal layer body is provided with continuous elastic stress control material, and the outer layer body that is arranged on described internal layer outside is the heat shrinkage insulation material.
2, the insulation as claimed in claim 1/compound heat-shrinkable tube of elastic stress material is characterized in that: described stress control material is for being silicone rubber, ethylene propylene rubber or polyamide, fourth cyanogen glue, butadiene-styrene rubber.
3, the insulation as claimed in claim 1/compound heat-shrinkable tube of elastic stress material, it is characterized in that: outer layer body is made of crosslinking with radiation type crystalline polyolefin insulating material, and crosslinking with radiation type crystalline polyolefin insulating material can be high density polyethylene pipe HDPE or polyethylene from high pressure process LDPE or linear polyethylene LLDPE or polyethylene or polythene-ethyl acrylate EEA.
4, as claim 1, the 2 or 3 described insulation/compound heat-shrinkable tube of elastic stress material, it is characterized in that, be added with the organic or inorganic filler in the colloidal materials of described internal layer body, the colloidal materials permittivity of described internal layer body greater than 10, volume resistivity is greater than 10
8Ω .cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201705683U CN201129562Y (en) | 2007-11-05 | 2007-11-05 | Insulated / elastic stress material composite thermal contraction pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201705683U CN201129562Y (en) | 2007-11-05 | 2007-11-05 | Insulated / elastic stress material composite thermal contraction pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201129562Y true CN201129562Y (en) | 2008-10-08 |
Family
ID=40017410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201705683U Expired - Lifetime CN201129562Y (en) | 2007-11-05 | 2007-11-05 | Insulated / elastic stress material composite thermal contraction pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201129562Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102558657A (en) * | 2010-12-27 | 2012-07-11 | 深圳市宏商材料科技股份有限公司 | Formula and production process of dual-layer thermal shrinkage-chilling shrinkage composite sleeve |
| CN104403179A (en) * | 2014-12-17 | 2015-03-11 | 天津金发新材料有限公司 | Polyethylene/ nylon heat shrink tubing and preparation method thereof |
-
2007
- 2007-11-05 CN CNU2007201705683U patent/CN201129562Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102558657A (en) * | 2010-12-27 | 2012-07-11 | 深圳市宏商材料科技股份有限公司 | Formula and production process of dual-layer thermal shrinkage-chilling shrinkage composite sleeve |
| CN102558657B (en) * | 2010-12-27 | 2016-03-30 | 深圳市宏商材料科技股份有限公司 | A kind of formula of dual-layer thermal shrinkage-chilling shrinkage composite sleeve and production technique thereof |
| CN104403179A (en) * | 2014-12-17 | 2015-03-11 | 天津金发新材料有限公司 | Polyethylene/ nylon heat shrink tubing and preparation method thereof |
| CN104403179B (en) * | 2014-12-17 | 2017-01-04 | 天津金发新材料有限公司 | A kind of polyethylene/nylon heat-shrink tube and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 2-3 building 7, building 9, 518000 Qilin Road, South Road, Bantian street, Longgang District, Guangdong, Shenzhen Patentee after: Hongshang Heat Shrinkable Materials Co., Ltd. Address before: First, 1-3 floor, Second South Industrial Park, Buji Town, Longgang District, Shenzhen District, Guangdong, Patentee before: Shenzhen Hongshang Heat Shrinkable Materials Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 8 Longgang District of Shenzhen City, Guangdong province 518000 Longgang Street Baolong Industrial City Jinlong Avenue Patentee after: Hongshang Heat Shrinkable Materials Co., Ltd. Address before: 2-3 building 7, building 9, 518000 Qilin Road, South Road, Bantian street, Longgang District, Guangdong, Shenzhen Patentee before: Hongshang Heat Shrinkable Materials Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081008 |