Cold-resistant and anti-freezing silicone rubber special cable

Abstract

The utility model relates to a cold-resistant anti-freezing silicone rubber special cable, which comprises a plurality of conductor inner cores, an insulating inner layer is wrapped outside each conductor inner core, a filling layer is arranged outside the insulating inner layers of the plurality of conductor inner cores, a metal shielding layer is arranged outside the filling layer, a polystyrene foam cold-resistant layer and a silicone rubber outer sheath are sequentially arranged outside the metal shielding layer, and the polystyrene foam cold-resistant layer and the silicone rubber outer sheath are wrapped outside the silicone rubber outer sheath. An anti-freezing heat tracing band is embedded in the outer wall of the silicone rubber outer sheath, and the silicone rubber outer sheath is uniformly wrapped by a plurality of heat conduction protection steel sheets along the length direction of the cable. According to the utility model, the polystyrene foam cold-resistant layer is arranged, so that cold can be well isolated, normal work of the inner conductor core is ensured, if the cable is frozen or in extremely cold weather, heating can be carried out through the anti-freezing heat tracing band, ice melting operation is carried out on the surface of the cable to avoid freezing, and the service life of the cable is prolonged. The plurality of heat conduction protection steel sheets wrapped outside the silicone rubber outer sheath can better uniformly distribute heat generated by the anti-freezing heat tracing band to other positions of the cable, thereby ensuring better heating and heat preservation effects.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wires and cables, in particular to a cold-resistant and frost-proof special silicone rubber cable. Background Art

[0002] With the development of social economy, the power and telecommunications industries have penetrated into daily life, and cables are widely used as the transmission carrier of electrical signals. At present, during the use of cables, in cold weather, the cables are prone to ice, which increases the weight of the cables and easily causes the cables to be crushed, or the cables are prone to cracks in cold weather, resulting in a short service life and affecting normal use. Utility Model Content

[0003] The utility model aims to solve the deficiencies of the prior art and provide a cold-resistant and frost-proof silicone rubber special cable.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A cold-resistant and frost-proof silicone rubber special cable comprises a plurality of conductor inner cores, each of which is wrapped with an insulating inner layer, a filling layer is arranged outside the insulating inner layer of the plurality of conductor inner cores, a metal shielding layer is arranged outside the filling layer, a polystyrene foam cold-resistant layer and a silicone rubber outer sheath are arranged outside the metal shielding layer in sequence, an antifreeze heating belt is embedded on the outer wall of the silicone rubber outer sheath, and a plurality of heat-conducting protective steel sheets are evenly wrapped outside the silicone rubber outer sheath along the length direction of the cable.

[0006] The thermally conductive protection steel sheet is wrapped around the silicone rubber outer sheath through two connecting end packages, a middle connecting steel sheet is provided in the middle position of one connecting end face of the thermally conductive protection steel sheet, the inner and outer side faces of the middle connecting steel sheet are provided with a plurality of connecting protrusions, the other connecting end face of the thermally conductive protection steel sheet is provided with an inner connecting steel sheet on the inner side and an outer connecting steel sheet on the outer side, a plurality of connecting slots are provided on the outer side face of the inner connecting steel sheet and the inner side face of the outer connecting steel sheet, and the connecting protrusions are inserted into the corresponding connecting slots.

[0007] A heat-insulating cotton mesh layer is arranged between the polystyrene foam cold-resistant layer and the metal shielding layer.

[0008] A plurality of tensile ropes are evenly distributed around the circumference between the metal shielding layer and the filling layer.

[0009] An asbestos fiber flame retardant layer is arranged between the silicone rubber outer sheath and the polystyrene foam cold-resistant layer.

[0010] The beneficial effects of the utility model are as follows: the utility model can well insulate against severe cold by arranging a polystyrene foam cold-resistant layer, thereby ensuring the normal operation of the inner core of the internal conductor; if the cable is frozen or extremely cold weather occurs, the antifreeze heating tape can be used for heating to melt the ice on the cable surface or prevent it from being over-frozen; the plurality of heat-conducting protective steel sheets wrapped outside the silicone rubber outer sheath can better evenly distribute the heat generated by the antifreeze heating tape to other positions of the cable, thereby ensuring a better heating and heat preservation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional view of the utility model;

[0012] Figure 2 It is a side view of the utility model;

[0013] Figure 3 It is a schematic diagram of a heat-conducting protective steel sheet;

[0014] In the figure: 1-conductor core; 2-insulating inner layer; 3-filling layer; 4-metal shielding layer; 5-polystyrene foam cold-resistant layer; 6-silicone rubber outer sheath; 7-antifreeze heating belt; 8-thermal protection steel sheet; 9-insulating cotton mesh layer; 10-tension rope;

[0015] 81-middle connecting steel sheet; 82-connecting protrusion; 83-inner connecting steel sheet; 84-outer connecting steel sheet; 85-connecting slot;

[0016] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0018] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0021] A cold-resistant and frost-proof silicone rubber special cable, such as Figure 1 , Figure 2 As shown, it includes several conductor cores 1, each of which is wrapped with an insulating inner layer 2, a filling layer 3 is arranged outside the insulating inner layer of several conductor cores 1, a metal shielding layer 4 is arranged outside the filling layer 3, a polystyrene foam cold-resistant layer 5 and a silicone rubber outer sheath 6 are arranged outside the metal shielding layer 4 in sequence, an antifreeze heating belt 7 is embedded on the outer wall of the silicone rubber outer sheath 6, and a plurality of heat-conducting protective steel sheets 8 are evenly wrapped outside the silicone rubber outer sheath 6 along the length direction of the cable.

[0022] A heat-insulating cotton mesh layer 9 is provided between the polystyrene foam cold-resistant layer 5 and the metal shielding layer 4. The heat-insulating cotton mesh layer 9 can enhance the cold-resistant and antifreeze capability of the cable.

[0023] A plurality of tensile ropes 10 are evenly distributed around the circumference between the metal shielding layer 4 and the filling layer 3, which can improve the overall tensile strength of the cable and reduce the probability of breakage during the pulling process.

[0024] An asbestos fiber flame retardant layer is provided between the silicone rubber outer sheath 6 and the polystyrene foam cold-resistant layer 5. The asbestos fiber flame retardant layer can play a good flame retardant effect.

[0025] The conductor core 1 is formed by twisting a number of copper wires.

[0026] The thickness of the silicone rubber outer sheath 6 is 2-6 mm.

[0027] The utility model is provided with a polystyrene foam cold-resistant layer 5, which can well insulate against severe cold and ensure the normal operation of the internal conductor core 1. If the cable is frozen or extremely cold weather occurs, the antifreeze heating tape 7 can be used for heating to melt the ice on the cable surface or prevent it from being over-frozen. The plurality of heat-conducting protective steel sheets 8 wrapped around the silicone rubber outer sheath 6 can better evenly distribute the heat generated by the antifreeze heating tape 7 to other positions of the cable, thereby ensuring a better heating and heat preservation effect.

[0028] The heat-conducting protective steel sheet 8 may be an integrated structure, which is entirely sleeved on the outside of the cable.

[0029] Of course, the heat-conducting protective steel sheet 8 can also be a disconnected structure, such as Figure 3 As shown, the heat-conducting protection steel sheet 8 is wrapped around the outside of the silicone rubber outer sheath 6 through two connecting end packages, a middle steel sheet 81 is provided in the middle position of one connecting end face of the heat-conducting protection steel sheet 8, and the inner and outer side faces of the middle steel sheet 81 are provided with a plurality of connecting protrusions 82, and the other connecting end face of the heat-conducting protection steel sheet 8 is provided with an inner steel sheet 83 on the inner side and an outer steel sheet 84 on the outer side, and a plurality of connecting grooves 85 are provided on the outer side face of the inner steel sheet 83 and the inner side face of the outer steel sheet 84, and the connecting protrusions 82 are inserted into the corresponding connecting grooves 85.

[0030] When installing the heat-conducting protection steel sheet 8, since the steel sheet is flexible, the outer steel sheet 84 can be rotated and unfolded, and then the middle steel sheet 81 can be installed on the outer side of the inner steel sheet 83 accordingly, and then the outer steel sheet 84 can be reset and connected to the middle steel sheet 81.

[0031] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A cold-resistant and frost-proof silicone rubber special cable, characterized in that: The invention comprises a plurality of conductor cores (1), each of which is wrapped with an insulating inner layer (2), a filling layer (3) is arranged outside the insulating inner layer of the plurality of conductor cores (1), a metal shielding layer (4) is arranged outside the filling layer (3), a polystyrene foam cold-resistant layer (5) and a silicone rubber outer sheath (6) are arranged outside the metal shielding layer (4), an antifreeze heating belt (7) is embedded on the outer wall of the silicone rubber outer sheath (6), and a plurality of heat-conducting protective steel sheets (8) are uniformly wrapped outside the silicone rubber outer sheath (6) along the length direction of the cable.

2. The cold-resistant and frost-proof silicone rubber special cable according to claim 1, characterized in that: The heat-conducting protective steel sheet (8) is wrapped around the outside of the silicone rubber outer sheath (6) through two connection end packages; a middle connecting steel sheet (81) is provided at the middle position of one connecting end surface of the heat-conducting protective steel sheet (8); the inner side surface and the outer side surface of the middle connecting steel sheet (81) are both provided with a plurality of connecting protrusions (82); the inner side surface of the other connecting end surface of the heat-conducting protective steel sheet (8) is provided with an inner connecting steel sheet (83) and the outer side surface is provided with an outer connecting steel sheet (84); the outer side surface of the inner connecting steel sheet (83) and the inner side surface of the outer connecting steel sheet (84) are both provided with a plurality of connecting slots (85); and the connecting protrusions (82) are inserted into the corresponding connecting slots (85).

3. A cold-resistant and frost-proof silicone rubber special cable according to claim 2, characterized in that: A heat-insulating cotton mesh layer (9) is provided between the polystyrene foam cold-resistant layer (5) and the metal shielding layer (4).

4. The cold-resistant and frost-proof silicone rubber special cable according to claim 3, characterized in that: A plurality of tension-resistant ropes (10) are evenly distributed around the circumference between the metal shielding layer (4) and the filling layer (3).

5. The cold-resistant and frost-proof silicone rubber special cable according to claim 4, characterized in that: An asbestos fiber flame retardant layer is provided between the silicone rubber outer sheath (6) and the polystyrene foam cold-resistant layer (5).

6. The cold-resistant and frost-proof silicone rubber special cable according to claim 5, characterized in that: The conductor inner core (1) is formed by twisting a plurality of copper wires.

7. The cold-resistant and frost-proof silicone rubber special cable according to claim 6, characterized in that: The thickness of the silicone rubber outer sheath (6) is 2-6 mm.

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