Low-temperature-resistant cable

Abstract

The utility model relates to the technical field of power cables. The low-temperature-resistant cable comprises a main body structure, the main body structure comprises a filling layer and a plurality of groups of tensile ropes; and the protection structure comprises an insulating layer and a protection sleeve, and the insulating layer is fixedly connected to the outer surface of the filling layer. According to the utility model, through the arrangement of the protective sleeve and the filling layer, the electrical insulation performance of the cable in use can be improved, the phenomena of electric leakage and short circuit of the cable can be effectively prevented, and the crosslinked polyethylene can stably work in a wide temperature range, so that the use performance of the cable in a low-temperature environment can be enhanced; through the arrangement of the multiple groups of tensile ropes, the stability and safety of the cable in the use process can be ensured, and the anti-pulling capability of the cable when the cable is bent can be improved, so that the situation that the cable is broken or broken in the use process is avoided to a certain extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power cable, more particularly to a low temperature resistant cable. BACKGROUND

[0002] Power cable is a cable for transmitting and distributing electric energy, and is commonly used in urban underground power grid, power station outgoing line, internal power supply of industrial and mining enterprises and underwater power transmission line across rivers and seas. The power cable is an electrical conductor for transmitting electric energy, which is usually composed of a conductor, an insulation layer, an insulation sheath and an outer sheath, and is widely used in power systems, industrial fields and buildings for power transmission, distribution and control.

[0003] At present, the low temperature resistant cable in the prior art may become hard during use due to the low temperature, which may cause the outer skin of the cable to crack and the conductivity of the cable to decrease. Moreover, the anti-pulling and anti-bending performance of some existing cables may be affected when used in a low temperature environment, which may cause the cable to break or be broken during use. Therefore, there is an urgent need for a low temperature resistant cable to solve the above problems. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a low temperature resistant cable to solve the problems in the background art.

[0005] The utility model provides the following technical scheme: a low temperature resistant cable, comprising:

[0006] The main body structure comprises a filler layer and a tensile rope, and the tensile rope is provided with a plurality of groups.

[0007] The protective structure comprises an insulation layer and a protective sleeve, and the insulation layer is fixedly connected to the outer surface of the filler layer.

[0008] Preferably, the material of the filler layer is cross-linked polyethylene, and the filler layer is fixedly connected with an inner sheath inside, and the inner sheath is provided with a plurality of groups. The material of the plurality of inner sheaths is rubber. Cross-linked polyethylene has excellent electrical insulation performance, which effectively prevents the cable from leaking and short circuiting, and ensures the safety of the cable.

[0009] Preferably, the inner sheath is fixedly connected with a conductor inside, and the conductor is provided with a plurality of groups, and the material of the plurality of conductors is oxygen-free copper. The conductivity of oxygen-free copper is better than that of ordinary copper, and it also has good conductivity in severe cold environment, so as to ensure the conductivity of the cable.

[0010] Preferably, the filling layer is internally fixedly connected with the anti-tension ropes, and the anti-tension ropes are provided in multiple groups, and the material of the multiple groups of anti-tension ropes is nylon, since the nylon material is good in flexibility and wear resistance and can bear greater tension, the stability and safety of the cable during use can be ensured.

[0011] Preferably, the material of the insulation layer is cross-linked polyethylene, and the outer surface of the insulation layer is fixedly connected with the compression-resistant layer, and the material of the compression-resistant layer is rubber, since the rubber material has good elasticity, the compression resistance of the cable during use can be improved.

[0012] Preferably, the inner surface of the outer surface of the compression-resistant layer is provided with the compression-resistant grooves, and the outer surface of the compression-resistant layer is fixedly connected with the protective sleeve, and the material of the protective sleeve is cross-linked polyethylene, since the cross-linked polyethylene can stably work in a wide temperature range, the performance of the cable during use in a low-temperature environment can be improved.

[0013] The technical effects and advantages of the utility model are that: through the setting of the protective sleeve and the filling layer, the electrical insulation performance of the cable during use can be improved, the phenomenon of leakage and short circuit of the cable can be effectively prevented, since the cross-linked polyethylene can stably work in a wide temperature range, the performance of the cable during use in a low-temperature environment can be improved.

[0014] Through the setting of the multiple groups of anti-tension ropes, the stability and safety of the cable during use can be ensured, the anti-pulling ability of the cable when being bent can be improved, the cable can be prevented from being broken or broken to a certain extent during use, and through the setting of the compression-resistant layer, the compression resistance of the cable during use can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the main structure of the utility model.

[0016] Figure 2 It is a three-dimensional structure explosion schematic view of the main structure of the utility model.

[0017] Figure 3 It is a three-dimensional structure explosion schematic view of the main structure of the utility model.

[0018] Figure 4 It is a three-dimensional structure explosion schematic view of the protective structure of the utility model.

[0019] The figure mark is: 1, the main structure, 11, the filling layer, 12, the inner protective sleeve, 13, the conductor, 14, the anti-tension rope, 2, the protective structure, 21, the insulation layer, 22, the compression-resistant layer, 23, the compression-resistant groove, 24, the protective sleeve. DETAILED DESCRIPTION

[0020] The technical solutions in the utility model will be described clearly and completely below in combination with the drawings in the utility model, and additionally, the forms of each structure described in the following embodiments are only examples, and the low-temperature-resistant cable involved in the utility model is not limited to each structure described in the following embodiments, and all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] Embodiment one

[0022] As Figures 1 to 4 shown, the utility model provides a kind of low-temperature-resistant cable, including: main body structure 1, main body structure 1 includes filling layer 11 and tensile rope 14, and tensile rope 14 is equipped with multiple groups, the material of filling layer 11 is crosslinked polyethylene, and inside fixedly connected with inner sheath 12 of filling layer 11, and inner sheath 12 is equipped with multiple groups, the material of multiple groups inner sheath 12 is rubber, multiple groups inner sheath 12 are fixedly connected with conductor 13 in the inside, and conductor 13 is equipped with multiple groups, and the material of multiple groups conductor 13 is oxygen-free copper, filling layer 11 is fixedly connected with tensile rope 14 in the inside, and tensile rope 14 is equipped with multiple groups, and the material of multiple groups tensile rope 14 is nylon, since the conductivity of oxygen-free copper is superior to ordinary copper, and also have good conductivity in severe cold environment, so it can ensure the conductivity of cable, since there is no oxygen, oxygen-free copper is not easy to oxidize in long time use, keep good electrical connection, so as to improve the stability of multiple groups conductor 13 when conducting, by the setting of multiple groups inner sheath 12, the influence of external humidity and temperature can be resisted, so as to prolong the service life of multiple groups inner sheath 12 and conductor 13 as a whole, since crosslinked polyethylene has excellent electrical insulation performance, effectively prevent the phenomenon of cable leakage and short circuit, ensure the safety of cable, and by the setting of multiple groups tensile rope 14, the bending resistance of equipment can be improved, since the flexibility of nylon material is good, and wear-resistant, can withstand greater tension, so it can ensure the stability and safety of cable in use.

[0023] Embodiment two

[0024] As Figures 1 to 4As shown, the embodiment also proposes: the protective structure 2 comprises the insulating layer 21 and the protective sleeve 24, the insulating layer 21 is fixedly connected to the outer surface of the filling layer 11, the material of the insulating layer 21 is cross-linked polyethylene, the anti-pressure layer 22 is fixedly connected to the outer surface of the insulating layer 21, the material of the anti-pressure layer 22 is rubber, the anti-pressure grooves 23 are arranged in the inner part of the outer surface of the anti-pressure layer 22, the anti-pressure grooves 23 are arranged in multiple groups, the protective sleeve 24 is fixedly connected to the outer surface of the anti-pressure layer 22, and the material of the protective sleeve 24 is cross-linked polyethylene. Since the rubber material has good elasticity, the compression resistance of the cable during use can be improved, the external pressure can be uniformly distributed through the arrangement of multiple anti-pressure grooves 23, the local stress is reduced, the cable damage or performance degradation caused by stress concentration is prevented, the compression resistance of the cable during use can be improved to a certain extent, and since the cross-linked polyethylene can work stably in a wide temperature range, the performance of the cable during use in a low-temperature environment can be improved, so that the cable can be prevented from being hardened or the protective sleeve 24 can be prevented from being cracked when the equipment is used in an environment with excessively low temperature.

[0025] Working principle: when the cable is used in an environment with low temperature, the cable can still maintain good flexibility at low temperature and is not easy to be brittle through the arrangement of the protective sleeve 24 and the filling layer 11, the leakage and short circuit phenomena can be effectively prevented through the arrangement of the insulating layer 21, the safety of the cable is ensured, the protective sleeve 24 and the filling layer 11 have good moisture-proof performance, water penetration can be prevented, and the internal multiple groups of conductors 13 are protected from the influence of moisture;

[0026] The main body structure 1 in the cable can be protected through the anti-pressure grooves 23 when the cable is extruded, the bending resistance of the equipment can be improved through the multiple groups of anti-tension ropes 14 when the equipment is bent, and the possibility of breakage of the internal inner sheath 12 and the conductor 13 can be reduced. The above is the whole working principle of the utility model.

[0027] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0028] Secondly: the utility model discloses the embodiment in the drawing, only relates to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0029] Finally: the above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, and any modification, equivalent replacement, improvement and the like made in the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A low temperature resistant cable, characterized in that, Include: The main structure (1) includes a filling layer (11) and a tensile rope (14), and the tensile rope (14) is provided with a plurality of groups; The protection structure (2) includes an insulating layer (21) and a protective sleeve (24), and the insulating layer (21) is fixedly connected to the outer surface of the filling layer (11).

2. A low temperature resistant cable according to claim 1, characterized in that: The material of the filling layer (11) is cross-linked polyethylene, and the inside of the filling layer (11) is fixedly connected with an inner sheath (12), and the inner sheath (12) is provided with a plurality of groups, and the material of the plurality of groups of the inner sheath (12) is rubber.

3. A low temperature resistant cable according to claim 2, characterized in that: The inside of the plurality of groups of the inner sheath (12) is fixedly connected with a conductor (13), and the conductor (13) is provided with a plurality of groups, and the material of the plurality of groups of the conductor (13) is oxygen-free copper.

4. A low temperature resistant cable according to claim 2, characterized in that: The inside of the filling layer (11) is fixedly connected with a tensile rope (14), and the tensile rope (14) is provided with a plurality of groups, and the material of the plurality of groups of the tensile rope (14) is nylon.

5. A low temperature resistant cable according to claim 1, characterized in that: The material of the insulating layer (21) is cross-linked polyethylene, and the outer surface of the insulating layer (21) is fixedly connected with a compression layer (22), and the material of the compression layer (22) is rubber.

6. A low temperature resistant cable according to claim 5, characterized in that: The inside of the outer surface of the compression layer (22) is provided with a compression groove (23), and the compression groove (23) is provided with a plurality of groups, and the outer surface of the compression layer (22) is fixedly connected with a protective sleeve (24), and the material of the protective sleeve (24) is cross-linked polyethylene.

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