CN210039709U

CN210039709U - Low temperature resistant anti-freezing cable

Info

Publication number: CN210039709U
Application number: CN201921164697.0U
Authority: CN
Inventors: 林春龙
Original assignee: Shenzhen South China Xinxing Cable Co Ltd
Current assignee: Shenzhen South China Xinxing Cable Co Ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-02-07
Anticipated expiration: 2029-07-24

Abstract

The utility model relates to a wire and cable technical field specifically is a low temperature resistant anti-freezing cable conductor, including there being no halogen sheath, there is not inside cold-resistant cover of cup jointing of halogen sheath, the inside aerogel carpet veneer that cup joints of cold-resistant cover, and the inside shielding weaving layer that cup joints of aerogel carpet veneer, and the inner sheath is cup jointed to the shielding weaving layer, is equipped with the conductor in the inner sheath, and conductor periphery cladding has no halogen insulation cover. The beneficial effects are that: the utility model discloses a cold-resistant cover and inner sheath constitute double-deck low temperature resistant structure, and the device is connected closely, but effective mode moisture gets into, and the freeze-proof ability is strong, can be under winter cold condition, normal installation uses, even receive the exogenic action under the ultra-low temperature state, still has fine elasticity performance, bending property and ageing-resistant performance, can not ftracture, has improved the security and the life of cable greatly, is applicable to among the ultra-low temperature outdoor environment.

Description

Low temperature resistant anti-freezing cable

Technical Field

The utility model relates to a wire and cable technical field specifically is a low temperature resistant anti-freezing cable conductor.

Background

The wire and cable is used for transmitting electric (magnetic) energy, information and wire products for realizing electromagnetic energy conversion. A wire cable in a broad sense, also referred to as a cable for short, refers to an insulated cable, which can be defined as: an aggregate consisting of; one or more insulated wire cores, and their respective possible coatings, total protective layers and outer jackets, the cable may also have additional conductors without insulation.

Generally, in the case of a cable made of a conventional insulating material, an insulating sheath becomes hard and fragile when exposed to severe cold, and therefore, it is of great technical and economic significance to develop a low-temperature-resistant anti-freezing cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low temperature resistant anti-freezing cable conductor to solve the problem of proposing in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a low temperature resistant anti-freezing cable conductor, includes no halogen sheath, the inside cold-resistant cover that cup joints of no halogen sheath, the aerogel felt layer is cup jointed to the inside of cold-resistant cover, the shielding weaving layer is cup jointed to aerogel felt in situ portion, the inner sheath is cup jointed to the shielding weaving layer, be equipped with the conductor in the inner sheath, the cladding of conductor periphery has no halogen insulation cover.

Preferably, the expansion and contraction rate of the halogen-free sheath is smaller than that of the cold-resistant sheath, the halogen-free sheath is provided with an annular tooth block extending towards the center of the halogen-free sheath, the outer surface of the cold-resistant sheath is provided with a groove matched with the annular tooth block, and the annular tooth block is just completely embedded into the groove.

Preferably, the surface of the cold-resistant sleeve is coated with a TPU cold-resistant paint, and the color of the paint is any one of black, gray and orange.

Preferably, the shielding braid is braided by using tinned copper, and the braiding density of the shielding braid is more than 80%.

Preferably, the conductor is formed by finely twisting a plurality of strands of anaerobic copper wires into a bundle, the number of the conductors is three, the three conductors are uniformly distributed in an annular manner by taking the circle center of the inner sheath as the center, a core body is arranged at the circle center of the inner sheath, and the core body is abutted to the halogen-free insulating sleeve.

Preferably, three filling ropes are filled between the inner sheath and the halogen-free insulating sheath, and the three filling ropes are respectively abutted with the inner sheath and the halogen-free insulating sheath.

Preferably, the main body of the halogen-free insulating sleeve is black, and a white digital identification number is arranged on the surface of the halogen-free insulating sleeve.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a cold-resistant cover and inner sheath constitute double-deck low temperature resistant structure, and the device is connected closely, can effective mode moisture get into, and the freeze-proof ability is strong, can be under the cold condition in winter, normally install and use, even receive external force effect under the ultra-low temperature state, still have fine elasticity performance, bending property and ageing resistance, can not ftracture, have improved the security and the life of cable greatly, be applicable to in the ultra-low temperature outdoor environment;

2. the halogen-free sheath is used as a protective layer of the cold-resistant sheath, is safe and nontoxic, and can prevent the cold-resistant sheath from being damaged by external factors, such as freezing injury, scratch, animal bite and the like;

3. the expansion and contraction rate of the halogen-free sheath is smaller than that of the cold-resistant sleeve, so that the contraction situation of the groove in the cold-resistant sleeve is larger than that of the annular tooth block, and the groove can clamp the annular tooth block, so that the halogen-free sheath and the cold-resistant sleeve are connected more closely, and the cracking of the halogen-free sheath is avoided.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: the insulation cable comprises a halogen-free sheath 1, a cold-resistant sheath 2, an aerogel felt layer 3, a shielding braid layer 4, a sheath 5, a conductor 6, a halogen-free insulation sheath 7, a core 8, a filling rope 9 and an annular tooth block 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a low-temperature-resistant anti-freezing cable comprises a halogen-free sheath 1, and a cold-resistant sleeve 2 is sleeved inside the halogen-free sheath 1. The halogen-free sheath 1 is provided with an annular tooth block 10 extending towards the center of the sheath, the outer surface of the cold-resistant sleeve 2 is provided with a groove matched with the annular tooth block 10, and the annular tooth block 10 is just completely embedded into the groove. Because the thermal expansion and cold shrinkage rate of the halogen-free sheath 1 is less than that of the cold-resistant sheath 2, when the halogen-free sheath 1 and the cold-resistant sheath 2 are in a cold environment, the cold shrinkage condition of the groove on the cold-resistant sheath 2 is greater than that of the annular tooth block 10, and the groove can clamp the annular tooth block 10, so that the halogen-free sheath 1 and the cold-resistant sheath 2 are connected more closely, and the cracking of the halogen-free sheath 1 is avoided.

In the embodiment, the cold-resistant sleeve 2 is made of a cold-resistant TPU material, the surface of the cold-resistant sleeve 2 is coated with cold-resistant TPU material paint, the paint is orange in color, the cold-resistant sleeve 2 is high in cold resistance, and the cold-resistant sleeve 2 still has good elastic performance and bending performance even if the cold-resistant sleeve is subjected to external force action in an ultralow temperature state.

The halogen-free sheath 1 is made of high-mechanical-property special cross-linked EM7 rubber, the halogen-free sheath 1 is used as a protective layer of the cold-resistant sheath 2, and the halogen-free sheath 1 is safe and non-toxic and can prevent the cold-resistant sheath 2 from being damaged by external factors, such as freezing damage, scratching, animal bite and the like.

Cold-resistant 2 inside aerogel carpet veneer 3 that cup joint of cover, 3 heat preservation capacities on aerogel carpet veneer are strong, avoid its inner structure to receive the frostbite, and 3 inside shield braid 4 that cup joint of aerogel carpet veneer are adopted tin-plated copper to weave to form, and its weaving density is greater than 80%, and not only resistant torsion is strong but also shielding capacity, is the radial mechanical protection layer of this kind of low temperature resistant anti-freezing cable conductor.

The shielding braid 4 cup joints inner sheath 5, is equipped with conductor 6 in the inner sheath 5, and the cladding of conductor 6 periphery has halogen-free insulating cover 7, and halogen-free insulating cover 7 adopts the formula of extruding halogen-free rubber material EI8, and halogen-free insulating cover 7 main part colour is black, and halogen-free insulating cover 7 surface is equipped with white digital identification number. The inner sheath 5 protects the halogen-free insulating sheath 7 from being scratched by the shielding braid 4, in the embodiment, the material selected for use by the inner sheath 5 is the same as that of the cold-resistant sheath 2, so the cold-resistant sheath 2 and the inner sheath 5 form a double-layer low temperature resistant structure, the device is connected tightly, water can enter in an effective mode, and the anti-freezing capacity is strong.

The conductor 6 is formed by finely twisting a plurality of anaerobic copper wires into a bundle, the number of the conductors 6 is three, the three conductors 6 are uniformly distributed in an annular shape by taking the circle center of the inner sheath 5 as the center, a core body 8 is arranged at the circle center of the inner sheath 5, the core body 8 is abutted to the halogen-free insulating sleeve 7, and the core body 8 is a nylon reinforced core. The inner sheath 5 and the halogen-free insulating sheath 7 are filled with three filling ropes 9, and the three filling ropes 9 are respectively abutted with the inner sheath 5 and the halogen-free insulating sheath 7. The core body 8 and the filling rope 9 can ensure the compact and round appearance of the electric cable.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a low temperature resistant anti-freezing cable conductor which characterized in that: including halogen-free sheath (1), cold-resistant cover (2) is cup jointed to halogen-free sheath (1) inside, aerogel felt layer (3) is cup jointed to cold-resistant cover (2) inside, the shielding weaving layer (4) is cup jointed to aerogel felt layer (3) inside, inner sheath (5) is cup jointed to shielding weaving layer (4), be equipped with conductor (6) in inner sheath (5), conductor (6) periphery cladding has halogen-free insulating cover (7).

2. The low temperature resistant anti-freezing cable line according to claim 1, wherein: the thermal expansion and cold shrinkage of the halogen-free sheath (1) is smaller than that of the cold-resistant sleeve (2), the halogen-free sheath (1) is provided with an annular tooth block (10) extending towards the center of the halogen-free sheath, the outer surface of the cold-resistant sleeve (2) is provided with a groove matched with the annular tooth block (10), and the annular tooth block (10) is just completely embedded into the groove.

3. The low temperature resistant anti-freezing cable line according to claim 1, wherein: the surface of the cold-resistant sleeve (2) is coated with TPU cold-resistant material paint, and the color of the paint is any one of black, gray and orange.

4. The low temperature resistant anti-freezing cable line according to claim 1, wherein: the shielding braid (4) is braided by tinned copper, and the braiding density is more than 80%.

5. The low temperature resistant anti-freezing cable line according to claim 1, wherein: the conductor (6) is formed by finely twisting multiple strands of anaerobic copper wires into a bundle, the number of the conductors (6) is three, the three conductors (6) are uniformly distributed in an annular mode with the circle center of the inner sheath (5) as the center, a core body (8) is arranged at the circle center of the inner sheath (5), and the core body (8) is abutted to the halogen-free insulating sleeve (7).

6. The low temperature resistant anti-freezing cable line according to claim 5, wherein: the halogen-free insulating sleeve is characterized in that filling ropes (9) are filled between the inner sheath (5) and the halogen-free insulating sleeve (7), the number of the filling ropes (9) is three, and the filling ropes (9) are respectively abutted to the inner sheath (5) and the halogen-free insulating sleeve (7).

7. The low temperature resistant anti-freezing cable line according to claim 1, wherein: the main body of the halogen-free insulating sleeve (7) is black, and the surface of the halogen-free insulating sleeve (7) is provided with a white digital identification number.