High and low temperature resistant and bending resistant cable

Abstract

The utility model relates to a cable resistant to high and low temperature and bending, which belongs to the field of cables and comprises a cable body, and the cable body comprises cable cores, an insulating layer, a first elastic rubber layer, a filling layer, a flame-retardant layer, a second elastic rubber layer and a wear-resistant layer. According to the high-low-temperature-resistant and bending-resistant cable, the first elastic rubber layer and the second elastic rubber layer are installed, so that the bending performance of the cable can be effectively improved, the cable can be quickly recovered after being bent, the condition that an outgoing line of the cable is broken is reduced, meanwhile, the second elastic rubber layer can provide waterproof protection for the cable, and the service life of the cable is prolonged. The service life of the cable can be prolonged, the heated high-temperature resistance of the cable can be effectively improved by installing the first elastic rubber layer and the second elastic rubber layer, the corrosion resistance of the cable core can be improved by installing the filling layer, the heat conduction performance of the cable core can be improved, and the filling layer can provide heat preservation protection for the cable core. The low temperature resistance of the cable core is improved, and the use quality and the service life of the cable core are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a high and low temperature resistant and bending resistant cable. Background Art

[0002] Cables are usually rope-like cables made of several or several groups of wires twisted together. Each group of wires is insulated from each other and often twisted around a central core. The entire cable is covered with a highly insulating covering. They are often installed in the air or underground or underwater for telecommunications or power transmission.

[0003] Please refer to the announcement number CN218384571U, a high and low temperature resistant signal cable, including four signal wires, the outer sides of the four signal wires are fixedly connected with a heat insulation layer, the outer sides of the heat insulation layer are fixedly connected with an anti-corrosion layer, the outer sides of the anti-corrosion layer are fixedly connected with a flame retardant layer, the signal wire includes a central filling layer and four conductors, the outer sides of the conductors are fixedly connected with an insulation layer, and the outer sides of the insulation layer are fixedly connected with a shielding layer; the high and low temperature resistant signal cable, the heat insulation layer is made of soft polyurethane composite material, it is not easy to age, harden and crack due to high and low temperature environmental factors, thereby resulting in reduced high and low temperature resistance of the cable, under low temperature conditions of minus sixty degrees Celsius, it can still maintain good bending performance, solves the problem of poor performance of signal cables and high and low temperature resistance, makes their electrical performance little affected by temperature and frequency, greatly improves the electrical performance and insulation performance of the cable.

[0004] In the above patent, the internal structure of the cable is relatively simple, mainly consisting of an outer sheath and an inner core conductor, which can protect the cable from low and high temperatures. However, the cable has poor bending resistance, fire resistance and water resistance, and the transmission attenuation in harsh outdoor scenes is severe. The cable has low bending resistance and is prone to breakage after multiple bending, which affects the reuse of the cable and reduces the quality of the cable. This application proposes another technical solution to solve this technical problem. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a high and low temperature resistant cable that is resistant to bending, has the advantages of being resistant to bending, etc., and solves the problems of the cable's poor resistance to bending, fire and water resistance, severe transmission attenuation in harsh outdoor scenes, low cable resistance to bending, and easy breakage after multiple bendings, which affects the reuse of the cable and reduces the quality of the cable.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-low temperature resistant and bending-resistant cable, comprising a cable body, wherein the cable body comprises a cable core, an insulating layer, a first elastic rubber layer, a filling layer, a flame retardant layer, a second elastic rubber layer and a wear-resistant layer;

[0007] An insulating layer is arranged on the outer side of the cable core, a first elastic rubber layer is sleeved on the outer side of the insulating layer, the filling layer is arranged between the flame retardant layer and the first elastic rubber layer, a second elastic rubber layer is arranged on the outer side of the flame retardant layer, and a wear-resistant layer is arranged on the outer side of the second elastic rubber layer.

[0008] Furthermore, the number of the cable cores is five, and the filling layer is epoxy resin particles.

[0009] Furthermore, the insulating layer is made of polyvinyl chloride and has a thickness of two millimeters, and the flame retardant layer is made of composite phenolic resin and has a thickness of four millimeters.

[0010] Furthermore, the thickness of the first elastic rubber layer is three millimeters, and the thickness of the second elastic rubber layer is five millimeters.

[0011] Furthermore, the wear-resistant layer is polyurethane, and the thickness of the wear-resistant layer is two millimeters.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The high and low temperature resistant and bending resistant cable can effectively improve the bending performance of the cable by installing a first elastic rubber layer and a second elastic rubber layer, and can quickly recover after the cable is bent, thereby reducing the breakage of the cable outlet. At the same time, the second elastic rubber layer can also provide waterproof protection for the cable, thereby extending the service life of the cable. By installing the first elastic rubber layer and the second elastic rubber layer, the heat resistance and high temperature resistance of the cable can be effectively improved. By installing a filling layer, the corrosion resistance of the cable core can be improved, and the thermal conductivity of the cable core can be improved. The filling layer can provide thermal insulation protection for the cable core, improve the low temperature resistance of the cable core, and thus extend the service quality and life of the cable core. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0015] Figure 2 It is a three-dimensional diagram of the structure of the utility model.

[0016] In the figure: 1. cable body; 2. cable core; 3. insulation layer; 4. first elastic rubber layer; 5. filling layer; 6. flame retardant layer; 7. second elastic rubber layer; 8. wear-resistant layer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-2 In this embodiment, a high and low temperature resistant and bending-resistant cable includes a cable body 1, and the cable body 1 includes a cable core 2, an insulating layer 3, a first elastic rubber layer 4, a filling layer 5, a flame retardant layer 6, a second elastic rubber layer 7 and a wear-resistant layer 8.

[0019] In this embodiment, an insulating layer 3 is provided on the outside of the cable core 2. The number of cable cores 2 is five. The insulating layer 3 is made of polyvinyl chloride and has a thickness of two millimeters. The installation of the insulating layer 3 can provide insulation isolation between the cable cores 2, prevent leakage, improve the safety of cable use, and improve the practicability of the cable.

[0020] Among them, the outer side of the insulating layer 3 is sleeved with a first elastic rubber layer 4, and the filling layer 5 is arranged between the flame retardant layer 6 and the first elastic rubber layer 4. The filling layer 5 is epoxy resin particles, which can improve the corrosion resistance of the cable core 2 and the thermal conductivity of the cable core 2, thereby extending the service quality and life of the cable core 2.

[0021] In addition, a reinforcing core is provided inside the filling layer 5, which can improve the overall strength of the cable, increase its tensile strength, and thus improve the quality of the cable.

[0022] It should be noted that the flame retardant layer 6 is a composite phenolic resin, and the thickness of the flame retardant layer 6 is four millimeters, which provides fire protection for the cable. When a fire occurs around the cable or the cable catches fire, fire retardant treatment can be performed to reduce the spread of fire and burn the cable, improve the quality and effect of the cable, and increase the service life of the cable.

[0023] In this embodiment, a second elastic rubber layer 7 is provided on the outside of the flame retardant layer 6, the thickness of the first elastic rubber layer 4 is three millimeters, and the thickness of the second elastic rubber layer 7 is five millimeters, which can effectively improve the bending performance of the cable, and can quickly recover after the cable is bent, thereby reducing the breakage of the cable outlet. The first elastic rubber layer 4 has a certain elasticity, and when the cable core 2 and the insulating layer 3 expand and contract due to heat and cold, the filling layer 5 can have a certain expansion space, and the first elastic rubber layer 4 can be compressed and stretched to a certain extent according to the temperature.

[0024] The second elastic rubber layer 7 can not only improve the bending resistance of the cable, but also provide waterproof protection for the cable to a certain extent, reduce the erosion and damage of the cable, and improve the quality and service life of the cable.

[0025] The first elastic rubber layer 4 and the second elastic rubber layer 7 can improve the high temperature resistance of the cable to a certain extent. The filling layer 5 provides a certain thermal insulation and protection performance for the cable core 2, so that the cable core 2 can be used and operated normally in a low temperature environment, thereby improving the overall high and low temperature resistance of the cable and extending the service life of the cable.

[0026] In this embodiment, a wear-resistant layer 8 is provided on the outside of the second elastic rubber layer 7. The wear-resistant layer 8 is polyurethane and has a thickness of two millimeters. It provides safety protection for the outer surface of the cable, reduces the wear of the cable during dragging, affects the use of the cable, and improves the use effect of the cable.

[0027] It should be noted that the high and low temperature resistant and bending-resistant cable can effectively improve the bending performance of the cable by installing a first elastic rubber layer 4 and a second elastic rubber layer 7. The cable can be quickly restored after being bent, reducing the breakage of the cable outlet. At the same time, the second elastic rubber layer 7 can also provide waterproof protection for the cable, which is convenient for extending the service life of the cable. By installing the first elastic rubber layer 4 and the second elastic rubber layer 7, the heat and high temperature resistance of the cable can be effectively improved. By installing a filling layer 5, the corrosion resistance of the cable core 2 is improved, and the thermal conductivity of the cable core 2 can be improved. The filling layer 5 can provide thermal insulation protection for the cable core, improve the low temperature resistance of the cable core 2, and thus extend the service quality and life of the cable core 2.

[0028] Specifically, the high and low temperature resistant and bending resistant cable can effectively improve the bending performance of the cable through the first elastic rubber layer 4 and the second elastic rubber layer 7, and can quickly recover after the cable is bent, reducing the breakage of the cable outlet. At the same time, the second elastic rubber layer 7 can also provide waterproof protection for the cable, which is convenient for extending the service life of the cable. The filling layer 5 can improve the corrosion resistance of the cable core 2 and the thermal conductivity of the cable core 2, thereby extending the service quality and life of the cable core 2. A reinforcing core is provided inside the filling layer 5, which can improve the overall strength of the cable and increase its tensile strength, thereby improving the quality of the cable and the service life of the cable body 1. The flame retardant layer 6 can improve the fire retardant performance of the cable. The wear-resistant layer 8 provides wear-resistant protection for the outer surface of the cable, so that the cable has a better use effect and reduces the wear of the outer surface.

[0029] The working principle of the above embodiment is:

[0030] (1) The high and low temperature resistant and bending resistant cable can effectively improve the bending performance of the cable by installing a first elastic rubber layer 4 and a second elastic rubber layer 7. The cable can be quickly restored after being bent, reducing the breakage of the cable outlet. At the same time, the second elastic rubber layer 7 can also provide waterproof protection for the cable, which is convenient for extending the service life of the cable. By installing a filling layer 5, the corrosion resistance of the cable core 2 is improved, and the thermal conductivity of the cable core 2 can be improved, thereby extending the service quality and life of the cable core 2. By installing a flame retardant layer 6, the fire retardant performance of the cable is improved. By installing a wear-resistant layer 8, the outer surface of the cable is provided with wear-resistant protection, so that the use effect of the cable is better and the wear of the outer surface is reduced.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-low temperature resistant and bending-resistant cable, comprising a cable body (1), characterized in that: The cable body (1) comprises a cable core (2), an insulating layer (3), a first elastic rubber layer (4), a filling layer (5), a flame retardant layer (6), a second elastic rubber layer (7) and a wear-resistant layer (8); An insulating layer (3) is arranged on the outer side of the cable core (2), a first elastic rubber layer (4) is sleeved on the outer side of the insulating layer (3), the filling layer (5) is arranged between the flame retardant layer (6) and the first elastic rubber layer (4), a second elastic rubber layer (7) is arranged on the outer side of the flame retardant layer (6), and a wear-resistant layer (8) is arranged on the outer side of the second elastic rubber layer (7).

2. The high and low temperature resistant and bending resistant cable according to claim 1, characterized in that: The number of the cable cores (2) is five, and the filling layer (5) is epoxy resin particles.

3. The high and low temperature resistant and bending resistant cable according to claim 1, characterized in that: The insulating layer (3) is made of polyvinyl chloride and has a thickness of two millimeters. The flame retardant layer (6) is made of composite phenolic resin and has a thickness of four millimeters.

4. The high and low temperature resistant and bending resistant cable according to claim 1, characterized in that: The thickness of the first elastic rubber layer (4) is three millimeters, and the thickness of the second elastic rubber layer (7) is five millimeters.

5. The high and low temperature resistant and bending resistant cable according to claim 1, characterized in that: The wear-resistant layer (8) is polyurethane, and the thickness of the wear-resistant layer (8) is two millimeters.

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