Cold-proof weak current cable

Abstract

The utility model discloses a cold-proof weak current cable, comprising a sheath and a cable core, the sheath is located outside the cable core, the sheath comprises a wear-resistant layer, a thermal insulation layer, a first insulation layer, a waterproof layer and a second insulation layer, the wear-resistant layer is nitrile rubber, the first insulation layer is butadiene rubber, the waterproof layer is chloroprene rubber, and the second insulation layer is a rubber layer. The second insulating layer is ethylene propylene rubber, the heat preservation layer comprises a styrene butadiene rubber layer, a glass wool layer and an EPDM rubber layer, the styrene butadiene rubber layer is located outside the glass wool layer, the glass wool layer is located outside the EPDM rubber layer, the wear-resistant layer is located outside the heat preservation layer, and the heat preservation layer is located outside the first insulating layer. According to the utility model, the wear-resistant layer, the styrene butadiene rubber layer, the glass wool layer, the EPDM rubber layer, the first insulating layer, the waterproof layer and the second insulating layer cooperate with each other, so that the problem that the existing weak-current cable is easy to damage in a low-temperature environment due to poor cold-proof effect is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of weak-current cables, in particular to a cold-proof weak-current cable. Background Art

[0002] Cables are usually rope-like cables twisted together by several or several groups of wires (at least two in each group). Each group of wires is insulated from each other and often twisted around a center, with a highly insulating covering on the entire outside. Cables have the characteristics of being energized inside and insulated outside. Weak-current cables refer to cables used for security communications, electrical equipment, and related weak-current transmission purposes. There is no strict boundary between "wires" and "cables." Products with a small number of cores, small product diameters, and simple structures are usually called wires, those without insulation are called bare wires, and others are called cables; conductors with larger cross-sectional areas (greater than 6 square millimeters) are called large wires, and those with smaller cross-sectional areas (less than or equal to 6 square millimeters) are called small wires. Insulated wires are also called cloth wires, but the current weak-current cables are not well protected against cold, which makes them easily damaged in low-temperature environments. For this reason, we propose a cold-proof weak-current cable. Utility Model Content

[0003] The utility model aims to provide a cold-proof weak-current cable, which has the advantage of good cold-proof effect and solves the problem that the existing weak-current cable has poor cold-proof effect and is easily damaged in a low-temperature environment.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cold-proof weak-current cable, comprising an outer skin and a cable core, the outer skin is located outside the cable core, the outer skin comprises a wear-resistant layer, a thermal insulation layer, a first insulating layer, a waterproof layer and a second insulating layer, the wear-resistant layer is nitrile rubber, the first insulating layer is butadiene rubber, the waterproof layer is chloroprene rubber, the second insulating layer is ethylene-propylene rubber, and the thermal insulation layer comprises a styrene-butadiene rubber layer, a glass wool layer and an EPDM rubber layer.

[0005] Preferably, the styrene-butadiene rubber layer is located outside the glass wool layer, and the glass wool layer is located outside the EPDM rubber layer.

[0006] Preferably, the wear-resistant layer is located outside the thermal insulation layer, and the thermal insulation layer is located outside the first insulating layer.

[0007] Preferably, the first insulating layer is located outside the waterproof layer, and the waterproof layer is located outside the second insulating layer.

[0008] Preferably, the wear-resistant layer, the thermal insulation layer, the first insulating layer, the waterproof layer and the second insulating layer have the same thickness, and the styrene-butadiene rubber layer, the glass wool layer and the EPDM rubber layer have the same thickness.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The utility model can play a wear-resistant role through the wear-resistant layer, avoid the cable from being damaged by animals during long-term use, thereby increasing the service life; utilize the styrene-butadiene rubber layer, the glass wool layer and the EPDM rubber layer, and adopt a variety of thermal insulation materials to effectively improve the thermal insulation effect, so that the cable has good thermal insulation and cold-proof functions; utilize the first insulating layer to play an insulating role, thereby improving safety; utilize the second insulating layer to further improve the insulation effect; utilize the waterproof layer to play a waterproof role, avoid the penetration of external liquids such as rainwater, and solve the problem that the existing weak current cable has poor cold-proof effect and is easily damaged in a low temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the outer skin structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the insulation layer structure of the utility model.

[0014] In the figure: 1, outer skin; 2, cable core; 3, wear-resistant layer; 4, thermal insulation layer; 401, styrene-butadiene rubber layer; 402, glass wool layer; 403, EPDM rubber layer; 5, first insulating layer; 6, waterproof layer; 7, second insulating layer. DETAILED DESCRIPTION

[0015] 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.

[0016] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figure 1-3 A cold-proof weak-current cable, comprising an outer skin 1 and a cable core 2, wherein the outer skin 1 is located outside the cable core 2, the outer skin 1 comprises a wear-resistant layer 3, a thermal insulation layer 4, a first insulating layer 5, a waterproof layer 6, and a second insulating layer 7, wherein the wear-resistant layer 3 is nitrile rubber, the first insulating layer 5 is butadiene rubber, the waterproof layer 6 is chloroprene rubber, the second insulating layer 7 is ethylene-propylene rubber, the thermal insulation layer 4 comprises a styrene-butadiene rubber layer 401, a glass wool layer 402, and an EPDM rubber layer 403, wherein the styrene-butadiene rubber layer 401 is located above the glass wool layer 402, the glass wool layer 402 is located outside the EPDM rubber layer 403, the wear-resistant layer 3 is located outside the thermal insulation layer 4, the thermal insulation layer 4 is located outside the first insulating layer 5, the first insulating layer 5 is located outside the waterproof layer 6, the waterproof layer 6 is located outside the second insulating layer 7, the wear-resistant layer 3, the thermal insulation layer 4, the first insulating layer 5, the waterproof layer 6 and the second insulating layer 7 are of equal thickness, and the thickness of the styrene-butadiene rubber layer 401, the glass wool layer 402 and the EPDM rubber layer 403 are equal.

[0019] When in use, the wear-resistant layer 3 can play a wear-resistant role, preventing the cable from being torn by animals during long-term use, thereby increasing the service life. The styrene-butadiene rubber layer 401, the glass wool layer 402 and the EPDM rubber layer 403, and the use of a variety of thermal insulation materials can effectively improve the thermal insulation effect, so that the cable has good thermal insulation and cold-proof functions. The first insulating layer 5 can play an insulating role, thereby improving safety. The second insulating layer 7 can further improve the insulation effect. The waterproof layer 6 can play a waterproof role to prevent external liquids such as rainwater from penetrating, thereby solving the problem that the current weak current cable has a poor cold-proof effect and is easily damaged in a low temperature environment.

[0020] 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 cold-proof weak-current cable, comprising an outer sheath (1) and a cable core (2), characterized in that: The outer skin (1) is located outside the cable core (2), and comprises a wear-resistant layer (3), a thermal insulation layer (4), a first insulating layer (5), a waterproof layer (6), and a second insulating layer (7); the wear-resistant layer (3) is made of nitrile rubber, the first insulating layer (5) is made of butadiene rubber, the waterproof layer (6) is made of chloroprene rubber, the second insulating layer (7) is made of ethylene-propylene rubber, and the thermal insulation layer (4) comprises a styrene-butadiene rubber layer (401), a glass wool layer (402), and an EPDM rubber layer (403).

2. A cold-proof weak-current cable according to claim 1, characterized in that: The styrene-butadiene rubber layer (401) is located outside the glass wool layer (402), and the glass wool layer (402) is located outside the EPDM rubber layer (403).

3. A cold-proof weak-current cable according to claim 1, characterized in that: The wear-resistant layer (3) is located outside the thermal insulation layer (4), and the thermal insulation layer (4) is located outside the first insulating layer (5).

4. The cold-proof weak-current cable according to claim 1, characterized in that: The first insulating layer (5) is located outside the waterproof layer (6), and the waterproof layer (6) is located outside the second insulating layer (7).

5. The cold-proof weak-current cable according to claim 1, characterized in that: The wear-resistant layer (3), the heat-insulating layer (4), the first insulating layer (5), the waterproof layer (6) and the second insulating layer (7) have the same thickness, and the styrene-butadiene rubber layer (401), the glass wool layer (402) and the EPDM rubber layer (403) have the same thickness.

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