CN210378554U - Prevent electric wire and cable that ftractures in low temperature environment - Google Patents
Prevent electric wire and cable that ftractures in low temperature environment Download PDFInfo
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- CN210378554U CN210378554U CN201921491799.3U CN201921491799U CN210378554U CN 210378554 U CN210378554 U CN 210378554U CN 201921491799 U CN201921491799 U CN 201921491799U CN 210378554 U CN210378554 U CN 210378554U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model provides a prevent electric wire and cable that ftractures in low temperature environment, including protective layer, insulating layer and sinle silk, the insulating layer cladding is at the sinle silk surface, the insulating layer is located inside the protective layer, be provided with a plurality of ribs on the protective layer, the rib sets up along protective layer inner wall circumference, reserves the clearance between the adjacent rib, be formed with the cavity between rib and the insulating layer, it has layer, insulating layer, fire-retardant layer and the buffer layer of heating to set gradually between cavity and the insulating layer, it has quick lime powder to heat to fill in the layer, be provided with water absorption material polyacrylamide in the insulating layer, the utility model discloses simple structure, installation convenient to use has fine cold-resistant resistance's performance, has solved among the prior art electric wire and cable hardness increase electric wire and cable and has ftractureed under.
Description
Technical Field
The utility model relates to an electric wire technical field especially involves a prevent electric wire cable that ftractures in low temperature environment.
Background
The wire and cable industry is the second major industry in China, which is second to the automobile industry, the product variety satisfaction rate and the domestic market share both exceed ninety percent, and the total yield of the wire and cable in China exceeds that in the United states and becomes the first major wire and cable producing country in the world.
In winter in the north, the temperature is generally between 10 ℃ below zero and 20 ℃, but in the northeast, the temperature can reach about 30 ℃, so that the construction of general power cables, control cables and the like in the environment is easy to crack, and for example, the whole outer skin is crisp once the general BV line and the like lightly falls on the ground.
In the wire and cable industry, the traditional wire and cable usually adopts rubber as a sheath, the traditional wire and cable moves or bends at a high speed at a low temperature, the outer sheath is seriously damaged due to the increase of the hardness of the wire and cable in a low-temperature environment, the sheath is easily cracked under the bending or high-speed movement of external force, the wire core in the sheath is exposed, the normal use of the wire and cable is seriously influenced, and the electrical accident is easily caused.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at not enough in the prior art, provide a prevent ftractureing electric wire and cable among low temperature environment, its simple structure, installation convenient to use has fine cold-resistant resistance's performance, prevents that it from under low temperature environment, and hardness increase wire and cable appears ftractureing under low temperature environment for a long time, influences the technical problem of normal use.
The technical scheme is as follows: in order to achieve the above object, the utility model provides a prevent electric wire and cable that ftractures in low temperature environment, including protective layer, insulating layer and sinle silk, the insulating layer cladding is at the sinle silk surface, the insulating layer is located inside the protective layer, its characterized in that: be provided with a plurality of ribs on the protective layer, the rib sets up along protective layer inner wall circumference, reserves the clearance between the adjacent rib, be formed with the cavity between rib and the insulating layer, heating layer, insulating layer, fire-retardant layer and buffer layer have set gradually between cavity and the insulating layer, it has quick lime powder to heat to fill in the layer, be provided with absorbent material polyacrylamide in the insulating layer.
As an improvement of the scheme, the heat-insulating layer is further included, and the heat-insulating layer is sleeved on the outer surface of the protective layer.
As an improvement of the scheme, the ribs are made of heat-conducting and insulating elastic rubber.
As an improvement of the scheme, the heat-insulating layer is filled with a rubber and plastic heat-insulating material.
As a modification of the scheme, the flame-retardant layer is filled with alkali-free glass fibers.
As a modification of the scheme, the buffer layer is filled with polyethylene foam.
As an improvement of the scheme, the protective layer is a styrene-butadiene rubber layer.
Has the advantages that: the utility model discloses a be provided with wear-resisting, it is heat-resisting, the protective layer of the better butadiene styrene rubber material preparation of ageing-resistant and vulcanization speed efficiency can guarantee at electric wire and cable at high-speed drag and the in-process that pulls that can not produce wearing and tearing, and its good ageing-resistant and vulcanization efficiency, electric wire and cable's life has greatly been improved, increased the air volume in electric wire and cable through being provided with the cavity in the protective layer, it heats the layer to be provided with next on the cavity, it is quick lime powder to heat the layer, can produce the heat after moisture in the cavity and the contact of quick lime powder, can transmit the heat that the quick lime reaction produced to the protective layer through the heat conduction insulating elastic rubber that has good heat conductivility ability, prevent that the protective layer from hardening in the low temperature environment for a long time, thereby the condition of ftractureing appears, in fire-retardant layer, heat preservation, buffer layer and the insulating layer, guaranteed wire and cable's normal operating temperature, the problem that the sclerosis even appears in the low temperature environment also can not appear and split even.
Drawings
Fig. 1 is a schematic cross-sectional view of an anti-cracking wire and cable in a low temperature environment according to the present invention;
fig. 2 is a schematic view of the sectional structure of the hollow cavity of the present invention.
List of reference numerals: 1. a heat-insulating layer; 2. a protective layer; 3. heating the layer; 4. a thermal insulation layer; 5. a flame retardant layer; 6. a buffer layer; 7. an insulating layer; 8. a wire core; 31. quicklime powder; 32. a cavity; 33. and (4) ribs.
Detailed Description
The invention will be further elucidated by the following figures and embodiments, with the understanding that the embodiments described below are only intended to illustrate the invention and are not intended to limit the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
The electric wire and cable is generally used for power transmission, generally buries and applies at the bottom of the earth, temperature generally all between minus 10 to 20 degrees in winter in the north, but can reach about minus 30 degrees in the northeast three provinces, this will make general electric wire and control cable etc. construct and bury easy fracture after applying under this kind of environment, even the bottom of the earth temperature is lower and comparatively moist than ground temperature, but be in cold environment for a long time, receive low temperature invasion and attack, still can lead to the overcoat fracture to appear on electric wire and cable surface, lead to the sinle silk in the sheath to expose.
Fig. 1-2 a prevent electric wire and cable that ftractures in low temperature environment, including protective layer 2, insulating layer 7 and sinle silk 8, insulating layer 7 cladding is at sinle silk 8 surface, insulating layer 7 is located inside protective layer 2, be provided with a plurality of ribs 33 on the protective layer 2, rib 33 sets up along 2 inner wall circumferences of protective layer, reserves the clearance between the adjacent rib 33, be formed with cavity 32 between rib 33 and the insulating layer 4, it heats layer 3, insulating layer 4, fire-retardant layer 5 and buffer layer 6 to set gradually between cavity 32 and the insulating layer 7, it has quick lime powder to fill in the layer 3 that heats, be provided with water absorption material polyacrylamide in the insulating layer 4.
In this embodiment, the protective layer further comprises a heat insulation layer 1, and the heat insulation layer 1 is sleeved on the outer surface of the protective layer 2.
In this embodiment, the protective layer 2 is a styrene butadiene rubber layer.
In the present embodiment, the ribs 33 are made of heat-conducting insulating elastic rubber.
In this embodiment, the insulating layer 1 is filled with a rubber-plastic insulating material.
In the above structure: an anti-cracking electric wire and cable in a low-temperature environment comprises a protective layer 2 and a wire core 8 which is positioned in the protective layer 2 and is coated by an insulating layer 7, a heating layer 3, a heat insulation layer 4, a flame retardant layer 5 and a buffer layer 6 are sequentially arranged between the insulating layer 7 and the protective layer 2, a plurality of ribs 33 are connected on the inner wall of the protective layer 2, the ribs 33 are arranged along the circumferential direction of the inner wall of the protective layer 2, the heating layer 3 is sleeved in the protective layer 2, a gap is arranged between every two adjacent ribs 33 because the heating layer 3 is sleeved in the protective layer 2, a cavity 32 is formed between each rib 33 and the heating layer 3, quicklime powder 31 is filled in the heating layer 3, the cavity 32 is used for enabling the air in the electric wire and cable to become more, a certain amount of water is contained in the air and the electric wire and cable is buried in the ground, and has very, thereby the production of heat, the heat passes through the better rib 33 transmission to protective layer 2 that just is the preparation of heat conduction insulating elastic rubber of thermal conductivity, thereby make protective layer 2 can have certain temperature, still be provided with one deck heat preservation 1 in protective layer 2's outside, heat preservation 1 can prevent that the temperature on the protective layer 2 from running off fast under low temperature environment, owing to heat layer 3 still with the adjacent contact of insulating layer 4, so the heat that quick lime powder 31 produced also can be through insulating layer 4 to fire-retardant layer 5 and buffer layer 6 transmission, the inside temperature of cable wire has been guaranteed, thereby the protective layer 2 of having solved wire and cable is owing to the condition that the drily splits appears under low temperature environment.
In the above structure: constantly produce the reaction at the moisture in quick lime powder 31 and the air and produce the heat, superpose each other to the heat that 8 direction transmission of sinle silk and sinle silk 8 self produced for preventing the heat, lead to sinle silk 8 to burn out, still be provided with insulating layer 4 and fire-retardant layer 5, insulating layer 4 is used for keeping apart the heat, thereby make a large amount of heats can flow to protective layer 2 direction, and because protective layer 2 has certain heat-resisting for the butylbenzene rubber layer, ageing-resistant performance, the problem of accelerated ageing and spontaneous combustion does not worry to appear, and the rubber and plastic insulation material fire behavior that heat preservation 1 was filled is good, and close bubble formula structure, can guarantee that the temperature that is located its inside can not run off fast, guaranteed that protective layer 2 can not appear the problem of sclerosis even dry crack under low.
In this embodiment, the flame retardant layer 5 is filled with alkali-free glass fibers.
In this embodiment, the buffer layer 6 is filled with polyethylene foam.
In the above structure: buffer layer 6 is the preparation of polyethylene foam, has good buffering effect, can reduce the destruction that wire and cable produced when installation and burying apply, guarantees sinle silk 8 quality.
In the above structure: the flame-retardant layer 5 is made of alkali-free glass fiber materials and has a good flame-retardant function, so that the cable is well flame-retardant, and the wire and the cable are prevented from being damaged.
The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features.
Claims (7)
1. The utility model provides a prevent split electric wire and cable in low temperature environment, including protective layer (2), insulating layer (7) and sinle silk (8), the cladding of insulating layer (7) is at sinle silk (8) surface, inside insulating layer (7) are located protective layer (2), its characterized in that: be provided with a plurality of ribs (33) on protective layer (2), rib (33) set up along protective layer (2) inner wall circumference, and it has the clearance to reserve between adjacent rib (33), be formed with cavity (32) between rib (33) and insulating layer (4), it heats layer (3), insulating layer (4), fire-retardant layer (5) and buffer layer (6) to set gradually between cavity (32) and insulating layer (7), it has quick lime powder (31) to heat to fill in layer (3), be provided with water absorption material polyacrylamide in insulating layer (4).
2. The anti-cracking electric wire and cable in a low-temperature environment according to claim 1, wherein: the heat-insulating layer (1) is further included, and the outer surface of the protective layer (2) is sleeved with the heat-insulating layer (1).
3. The anti-cracking electric wire and cable in a low-temperature environment according to claim 1, wherein: the ribs (33) are made of heat-conducting insulating elastic rubber.
4. The anti-cracking electric wire and cable in a low-temperature environment according to claim 2, wherein: and rubber and plastic heat-insulating materials are filled in the heat-insulating layer (1).
5. The anti-cracking electric wire and cable in a low-temperature environment according to claim 1, wherein: and alkali-free glass fibers are filled in the flame-retardant layer (5).
6. The anti-cracking electric wire and cable in a low-temperature environment according to claim 1, wherein: the buffer layer (6) is filled with polyethylene foam.
7. The anti-cracking electric wire and cable in a low-temperature environment according to claim 1, wherein: the protective layer (2) is a styrene butadiene rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921491799.3U CN210378554U (en) | 2019-09-09 | 2019-09-09 | Prevent electric wire and cable that ftractures in low temperature environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921491799.3U CN210378554U (en) | 2019-09-09 | 2019-09-09 | Prevent electric wire and cable that ftractures in low temperature environment |
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| CN210378554U true CN210378554U (en) | 2020-04-21 |
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| CN201921491799.3U Active CN210378554U (en) | 2019-09-09 | 2019-09-09 | Prevent electric wire and cable that ftractures in low temperature environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071487A (en) * | 2020-08-05 | 2020-12-11 | 王伟 | Internal heating type anti-freezing cable for severe cold area and anti-freezing method thereof |
| CN113205908A (en) * | 2021-05-07 | 2021-08-03 | 安徽金环电气设备有限责任公司 | Self-differentiation low-temperature anti-cracking cable |
-
2019
- 2019-09-09 CN CN201921491799.3U patent/CN210378554U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071487A (en) * | 2020-08-05 | 2020-12-11 | 王伟 | Internal heating type anti-freezing cable for severe cold area and anti-freezing method thereof |
| CN113205908A (en) * | 2021-05-07 | 2021-08-03 | 安徽金环电气设备有限责任公司 | Self-differentiation low-temperature anti-cracking cable |
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Address after: No.3, mingui Road, Yandu street, Yandu District, Yancheng City, Jiangsu Province 224000 Patentee after: JIANGSU SHANQI ELECTRICAL Co.,Ltd. Address before: 224024 No. 1 Kaiyuan Road, Gangzhong Street, Yandu District, Yancheng City, Jiangsu Province Patentee before: JIANGSU SHINKEY ELECTRIC GROUP Co.,Ltd. |
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