CN210245095U

CN210245095U - Light temperature-resistant shielded cable

Info

Publication number: CN210245095U
Application number: CN201921274413.3U
Authority: CN
Inventors: Chaoyang Liu; 柳朝阳
Original assignee: Xiangtan Special Cable Co ltd
Current assignee: Xiangtan special cable Co., Ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-04-03
Anticipated expiration: 2029-08-07

Abstract

The utility model provides a light temperature-resistant shielding cable, which consists of a cable core and a total composite coating layer coating the cable core; the cable core comprises three independent shielded cables with different functions, and each independent shielded cable further comprises a first wire core and a sub-composite coating layer coating the first wire core; each first wire core is formed by twisting a plurality of groups of second wire cores, and the number of the second wire cores in the three first wire cores is not equal; the total composite coating layer and each sub-composite coating layer are internally provided with a shielding layer woven by tinned copper wires respectively; the outermost layer of the total composite coating layer is a temperature-resistant thermoplastic polyester elastomer. The utility model discloses the cable is high, low temperature resistant, light in weight, and the shielding nature is good, and is small, but wide application in ground control system.

Description

Light temperature-resistant shielded cable

Technical Field

The utility model relates to a wire and cable field, concretely relates to light-duty, temperature resistant shielded cable.

Background

Cables are generally rope-like cables made up of several or groups of conductors twisted together to transmit power or information from one location to another, each group being insulated from one another and often twisted around a center, the entire outer surface being covered with a highly insulating coating. The cable has the characteristics of internal electrification and external insulation, the cable comprises a power cable, a control cable, a compensation cable, a shielding cable, a high-temperature cable, a computer cable, a signal cable, a coaxial cable, a fire-resistant cable, a marine cable, a mining cable, a wind power cable and the like, the cable is mostly a direct-current cable, the outdoor laying is more, moisture resistance, insolation resistance, cold resistance, heat resistance and ultraviolet resistance are required, and chemical substances such as acid and alkali resistance are required under certain special environments.

At present, the low-temperature impact embrittlement temperature of a common cable is-15 ℃ to-20 ℃, the temperature of the common cable in winter is lower in high latitude areas, such as northeast, inner Mongolia, Qinghai-Tibet areas and other areas of China, and if the low-temperature resistance of the cable can not meet the requirement, the insulation and the protective sleeve of the cable are often damaged in the laying process, so that the protective layer cracks, even the cable breaks and other phenomena, and the normal power supply is seriously influenced. Meanwhile, the high temperature resistance of the cable is also important, and if the high temperature resistance is insufficient, serious power supply accidents can be caused.

The cable conductor is changed to be a conventional project of distribution lines maintenance, because the cable conductor all twines on preventing the drum in whole bundle, manual operation during the defence line, when unit cable conductor weight is great, it will be very heavy to be whole bundle ground cable, is unfavorable for manual operation, has both reduced efficiency, also causes bodily injury easily.

In addition, the cable shielding layer structure has a plurality of structures, but the cable which can be applied to the occasion of strong electromagnetic field at present has the problems of complex structure and poor shielding effect.

SUMMERY OF THE UTILITY MODEL

Various defects to above-mentioned prior art cable, the utility model aims at providing a subtract heavy, subtract volume, high temperature resistant and low temperature, full shielding property's special shielded cable for ground control system.

The utility model provides an above-mentioned technical problem specifically adopt following technical scheme:

a light temperature-resistant shielding cable is composed of a cable core and a total composite coating layer coating the cable core; the cable core comprises three independent shielded cables with different functions, and each independent shielded cable further comprises a first wire core and a sub-composite coating layer coating the first wire core; each first wire core is formed by twisting a plurality of groups of second wire cores, and the number of the second wire cores in the three first wire cores is not equal; the total composite coating layer and each sub-composite coating layer are internally provided with a shielding layer woven by tinned copper wires respectively; the outermost layer of the total composite coating layer is a temperature-resistant thermoplastic polyester elastomer.

The utility model discloses in the preferred scheme, the independent shielded cable that three kinds of functions are different be power cord, control monitoring line and communication cable respectively, correspondingly, first core second core quantity be 3 groups or 3 groups more than, 10 groups or 10 groups more than, 30 groups or 30 groups more than respectively.

The utility model discloses in the preferred scheme, total compound coating layer be polyester film layer, tinned wire weave total shield layer and temperature resistant thermoplasticity polyester elastomer oversheath layer from inside to outside in proper order.

The utility model discloses in the preferred scheme, branch compound coating layer from inside to outside be polyester film layer and tinned wire weave branch shielding layer in proper order.

In the preferred scheme of the utility model, the second wire core is composed of a tinned copper wire coated with a thermoplastic elastomer insulating layer; the tin-plated copper conducting wire is further formed by stranding three or more than three thin tin-plated copper wires.

In the preferred embodiment of the present invention, the cable core further comprises a filling material.

In the scheme of the utility model, the thermoplastic elastomer insulating layer of second sinle silk preferably adopt the polyolefin thermoplastic elastomer insulating layer material of low density, for example styrene (SBS, SIS, SEBS, SEPS), olefin (TP0, TPV), divinyl (TPB, TPI), vinyl chloride (TPVC) etc..

In the scheme of the utility model, polyester film layer preferably adopt temperature resistant thermoplasticity polyester elastomer, for example, ammonia ester (TPU), ester (TPEE) etc..

The technical scheme of the utility model following beneficial effect has:

the utility model discloses in, the tinned copper wire is formed by the tinned copper wire hank system more than three, and its outer crowded package has polyolefin thermoplastic elastomer insulating layer, makes the heart yearn keep good electrical property, ageing resistance, softness can under low temperature environment.

The inside cable core is provided with a layer of tinned braided shielding layer, so that static electricity generated by the cable can be removed in time, and electromagnetic interference of the cable on other cable cores and other cable cores can be eliminated.

The tinned copper wire braided shielding layer is braided outside the assembly cable wrapping polyester film band, so that the electromagnetic interference of an electromagnetic field of the assembly cable to the external environment and the electromagnetic field of the external environment to the operation of the whole cable are eliminated.

The outermost layer of the product is extruded with the temperature-resistant thermoplastic polyester elastomer, so that the product has excellent mechanical properties and electrical properties such as softness, flexibility, wear resistance, environmental aging resistance, salt mist resistance, ultraviolet resistance, temperature resistance and the like.

Finally, the shielded cable of the utility model has good high and low temperature resistance, and the environmental temperature of the product can reach-80 ℃ to 200 ℃ after long-term use; the weight is light, the insulating sheath is made of low-density thermoplastic material, and the weight is reduced by more than 20%; the shielding property is good, the shielding is non-directional, the shielding rate reaches more than 99.9% in a high-frequency environment, and the electromagnetic field interference among independent units is avoided; the volume is small, the power line, the control monitoring line and the communication cable are integrated in a mixed mode, the occupied space of laying of each line is greatly reduced, and laying and maintenance are convenient.

The utility model discloses the product is high, low temperature resistant, production efficiency is high, the energy consumption is low, with low costs, mechanical properties and electrical property are excellent, but wide application in ground control system.

Drawings

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments:

fig. 1 is a schematic cross-sectional structure diagram of the shielded cable according to embodiment 1 of the present invention.

In the figure:

the cable comprises a power line 1, a control detection line 2, a communication cable 3, a filling material 4, a polyester film layer 5, a tinned copper wire braided shielding layer 6, a polyolefin thermoplastic elastomer insulating layer 7, a tinned copper wire 8 and a temperature-resistant thermoplastic polyester elastomer outer sheath layer 9.

Detailed Description

Example 1

As shown in fig. 1, an internal cable core of the light temperature-resistant shielding cable comprises three independent shielding cables, namely a power line 1, a control monitoring line 2 and a communication cable 3, and a filling material 4, wherein the power line 1, the control monitoring line 2 and the communication cable 3 are all formed by sequentially wrapping a polyester film layer 5 and a tinned copper wire braided shielding layer 6 from inside to outside by stranded wire cores; all the twisted wire cores are formed by twisting a plurality of groups of tinned copper wires 8 wrapped by polyolefin thermoplastic elastomer insulating layers 7, wherein the tinned copper wires 8 twisted in the power line 1, the control monitoring line 2 and the communication cable 3 are respectively 3 groups, 12 groups and 37 groups; all the independent shielding cables are wrapped in the polyester film layer 5 after being mutually attached, and the tinned copper wire braided shielding layer 6 and the temperature-resistant thermoplastic polyester elastomer outer sheath layer 9 are sequentially wrapped outside the polyester film layer 5.

In the light temperature-resistant shielding cable, all the tinned copper wires 8 are respectively twisted by three or more than three small tinned copper wires.

In the light temperature-resistant shielding cable, the polyolefin thermoplastic elastomer insulating layer 7 may be made of a low-density polyolefin thermoplastic elastomer insulating layer material, such as styrene (SBS, SIS, SEBS, SEPS), olefin (TP0, TPV), diene (TPB, TPI), vinyl chloride (TPVC), or the like.

In the light temperature-resistant shielding cable, the polyester film layer 5 may be a temperature-resistant thermoplastic polyester elastomer, such as urethane (TPU), ester (TPEE), or the like.

In the light temperature-resistant shielding cable, the temperature-resistant thermoplastic polyester elastomer outer sheath layer 9 can be made of a high temperature-resistant TPE material in the prior art.

It should be understood by those skilled in the art that the above embodiments are only used for illustrating the book utility model and not as a limitation of the present invention, and that the changes and modifications to the above embodiments are all within the scope of the claims of the present invention as long as they are within the spirit of the present invention.

Claims

1. A light temperature-resistant shielding cable is composed of a cable core and a total composite coating layer coating the cable core; the method is characterized in that: the cable core comprises three independent shielding cables with different functions, and each independent shielding cable further comprises a first wire core and a sub-composite coating layer coating the first wire core; each first wire core is formed by twisting a plurality of groups of second wire cores, and the number of the second wire cores in the three first wire cores is not equal; the total composite coating layer and each sub-composite coating layer are internally provided with a shielding layer woven by tinned copper wires respectively; the outermost layer of the total composite coating layer is a temperature-resistant thermoplastic polyester elastomer.

2. The shielded electrical cable of claim 1, wherein: the three independent shielding cables with different functions are respectively a power line, a control monitoring line and a communication cable, and correspondingly, the number of the second wire cores in the first wire core is respectively more than 3 groups or 3 groups, more than 10 groups or 10 groups, more than 30 groups or more than 30 groups.

3. The shielded electrical cable of claim 1, wherein: the total composite coating layer comprises a polyester film layer, a tinned copper wire woven total shielding layer and a temperature-resistant thermoplastic polyester elastomer outer sheath layer from inside to outside in sequence.

4. The shielded electrical cable of claim 1, wherein: the sub-composite coating layer is sequentially provided with a polyester film layer and a tinned copper wire braided sub-shielding layer from inside to outside.

5. The shielded electrical cable of claim 1, wherein: the second wire core is composed of a tin-plated copper wire coated thermoplastic elastomer insulating layer; the tin-plated copper conducting wire is further formed by stranding three or more than three thin tin-plated copper wires.

6. The shielded electrical cable of claim 1, wherein: the cable core further comprises a filling material.

7. The shielded electrical cable of claim 1, wherein: the thermoplastic elastomer insulating layer of the second wire core is made of a low-density polyolefin thermoplastic elastomer insulating layer material selected from any one of styrenes, olefins, dienes or vinyl chloride.

8. The shielded electrical cable of any one of claims 3 or 4, wherein: the polyester film layer adopts a temperature-resistant thermoplastic polyester elastomer selected from urethane or ester.