Anti-freezing cable

Abstract

The utility model relates to the technical field of cables, in particular to an anti-freezing cable which comprises a metal net layer, a protective layer is arranged in the metal net layer, a third insulating layer is arranged in the protective layer, an inner sheath layer is arranged on the inner side of the third insulating layer, a conductor is arranged in the inner sheath layer, and an outer sheath layer is arranged in the inner sheath layer. A second insulating layer is arranged outside the metal net layer; a metal shielding layer is arranged outside the second insulating layer, a first insulating layer is arranged outside the metal shielding layer, a waterproof layer is arranged outside the first insulating layer, and an outer protective layer is arranged outside the waterproof layer. According to the utility model, the outer protective layer and the protective layer are matched for use, the outer protective layer and the protective layer respectively adopt the polyethylene sheath and the low-temperature crosslinked polyethylene, and the polyethylene sheath and the low-temperature crosslinked polyethylene can provide excellent cold resistance, so that the cable can still flexibly and reliably operate in an extremely low-temperature environment.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a freeze-resistant cable. Background Art

[0002] Cable is a combination of conductive materials used to transmit electricity, telecommunication signals or data, usually composed of conductors, insulation layers, sheaths and other accessories. Cables can be divided into different types according to their uses. For example, power cables are used to transmit electricity, including low-voltage cables, medium-voltage cables and high-voltage cables, etc. Communication cables are used to transmit telephone, Internet and other communication signals, including fiber optic cables, coaxial cables, etc. Control cables are used to connect control devices and transmit control signals. Instrument cables are used to connect various instruments and transmit measurement signals. Electronic cables are used to connect electronic equipment such as computers, audio systems, etc.

[0003] For example, a cable disclosed in the authorization announcement number CN218826236U includes a sheath layer, a metal layer, a biochemical layer and an inner lining layer are arranged in sequence on the inner side of the sheath layer, the biochemical layer is arranged between the metal layer and the inner lining layer, a center line and a plurality of conductors are arranged in the inner lining layer, the plurality of conductors are twisted around the center line, an insulating sleeve is arranged on the outer side of the conductor, and the sheath layer is made of waterproof rubber. After adopting the above technical solution, the beneficial effects of the utility model are: the cable is not easily damaged by being bitten by mice, thereby increasing the stability of the cable when in use, and at the same time, it can also reduce the time spent by the staff to find the source of cable damage, thereby reducing the burden on the staff.

[0004] The above device has a simple structure and reasonable design, can meet the needs of users, and has great promotion value;

[0005] Although the above patent makes the cable less likely to be damaged by mice, thereby increasing the stability of the cable when in use, the insulation layer may be damaged when the cable is exposed to low temperature environment without sufficient anti-freeze protection. In the case of freezing, the insulation layer may become brittle or crack, thereby increasing the risk of short circuit or insulation failure of the cable. Utility Model Content

[0006] The purpose of the utility model is to provide a freeze-resistant cable to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A freeze-resistant cable, comprising

[0009] A metal mesh layer, wherein a protective layer is disposed inside the metal mesh layer, a third insulating layer is disposed inside the protective layer, an inner sheath layer is disposed inside the third insulating layer, a conductor is disposed inside the inner sheath layer, and a second insulating layer is disposed outside the metal mesh layer;

[0010] A metal shielding layer is arranged outside the second insulating layer, a first insulating layer is arranged outside the metal shielding layer, a waterproof layer is arranged outside the first insulating layer, and an outer protective layer is arranged outside the waterproof layer.

[0011] Preferably, the metal mesh layer comprises a copper mesh and a tin-plated layer, and the surface of the copper mesh is coated with the tin-plated layer;

[0012] Preferably, the metal shielding layer comprises an aluminum tape and a polyethylene film, and the polyethylene film is arranged outside the aluminum tape;

[0013] Preferably, the protective layer is made of low-temperature cross-linked polyethylene;

[0014] Preferably, the first insulating layer, the second insulating layer and the third insulating layer are made of cross-linked polyvinyl chloride;

[0015] Preferably, the conductor is made of copper or aluminum.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. This antifreeze cable is used in combination with an outer sheath and a protective layer. The outer sheath and the protective layer are respectively made of polyethylene sheath and low-temperature cross-linked polyethylene. The polyethylene sheath and low-temperature cross-linked polyethylene can provide excellent cold resistance and ensure that the cable can still operate softly and reliably in extreme low temperature environments.

[0018] 2. This antifreeze cable is used in combination with a first insulating layer, a second insulating layer, a third insulating layer and a waterproof layer. The first insulating layer, the second insulating layer and the third insulating layer use cross-linked polyethylene as insulating layers, have excellent electrical insulation properties, and can effectively prevent current leakage and failure. The waterproof layer can effectively prevent moisture penetration and ensure the stable operation of the electrical system, especially in humid environments or underwater application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the copper mesh structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the aluminum strip structure of the utility model;

[0022] Figure 4 For the utility model Figure 1 Enlarged schematic diagram at point A in the middle.

[0023] In the figure: 1, metal mesh layer; 101, copper mesh; 102, tinned layer; 2, protective layer; 3, third insulating layer; 4, inner sheath layer; 5, conductor; 6, second insulating layer; 7, metal shielding layer; 701, aluminum tape; 702, polyethylene film; 8, first insulating layer; 9, waterproof layer; 10, outer sheath. DETAILED DESCRIPTION

[0024] 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.

[0025] like Figure 1-4 As shown, a technical solution provided by the utility model:

[0026] A freeze-resistant cable comprises a metal mesh layer 1, a protective layer 2 is arranged inside the metal mesh layer 1, the protective layer 2 is made of low-temperature cross-linked polyethylene, a third insulating layer 3 is arranged inside the protective layer 2, an inner sheath layer 4 is arranged inside the third insulating layer 3, a conductor 5 is arranged inside the inner sheath layer 4, the conductor 5 is made of copper or aluminum, a second insulating layer 6 is arranged outside the metal mesh layer 1; a metal shielding layer 7 is arranged outside the second insulating layer 6, a first insulating layer 8 is arranged outside the metal shielding layer 7, a waterproof layer 9 is arranged outside the first insulating layer 8, and an outer sheath 10 is arranged outside the waterproof layer 9; the first insulating layer 8, the second insulating layer 6 and the third insulating layer 3 are made of cross-linked polyvinyl chloride;

[0027] In this embodiment, the first insulating layer 8, the second insulating layer 6 and the third insulating layer 3 use cross-linked polyethylene as the insulating layer, which has excellent electrical insulation performance and can effectively prevent current leakage and failure. The waterproof layer 9 can effectively prevent moisture penetration and ensure the stable operation of the electrical system, especially in a humid environment or underwater application scenario;

[0028] The outer sheath 10 and the protective layer 2 are made of polyethylene sheath and low-temperature cross-linked polyethylene respectively. The polyethylene sheath and low-temperature cross-linked polyethylene can provide excellent cold resistance and ensure that the cable can still operate flexibly and reliably in an extremely low temperature environment.

[0029] like Figure 2As shown, the metal mesh layer 1 includes a copper mesh 101 and a tin-plated layer 102, and the surface of the copper mesh 101 is coated with the tin-plated layer 102;

[0030] In this embodiment, the copper mesh 101 is a mesh structure made of copper, which has good conductivity and flexibility. The copper mesh 101 is in a woven or meshed form, which can effectively guide external electromagnetic interference to the ground, thereby protecting the inside of the cable from interference. A layer of tin is covered on the surface of the copper mesh 101 to form a tin plating layer 102. The tin plating layer 102 helps to improve the corrosion resistance and mechanical strength of the copper mesh 101, while reducing oxidation and extending the service life. In addition, the tin plating layer 102 also helps to improve the connection performance of the copper mesh 101, making it easier to connect with other cable components.

[0031] like Figure 3 As shown, the metal shielding layer 7 includes an aluminum tape 701 and a polyethylene film 702, and the polyethylene film 702 is disposed outside the aluminum tape 701;

[0032] In this embodiment, the aluminum tape 701 is a thin sheet made of aluminum. The aluminum tape 701 has good conductivity and flexibility, and can effectively guide external electromagnetic interference to the ground. The aluminum tape 701 is thin and soft so as to adapt to the bending and shape of the cable. The polyethylene film 702 refers to a layer of polymer film covering the surface of the aluminum tape 701. The function of the polymer film is to protect the aluminum tape 701 from corrosion and damage by the external environment, and to provide additional mechanical protection, which also helps the aluminum tape 701 to better resist external pressure and physical damage.

[0033] Working principle: The first insulating layer 8, the second insulating layer 6 and the third insulating layer 3 use cross-linked polyethylene as the insulating layer, which has excellent electrical insulation performance and can effectively prevent current leakage and failure. The waterproof layer 9 can effectively prevent moisture penetration and ensure the stable operation of the electrical system, especially in humid environments or underwater application scenarios; the outer sheath 10 and the protective layer 2 respectively use polyethylene sheath and low-temperature cross-linked polyethylene. The polyethylene sheath and low-temperature cross-linked polyethylene can provide excellent cold resistance, ensuring that the cable can still operate softly and reliably in extreme low temperature environments.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A freeze-resistant cable, characterized in that: include A metal mesh layer (1), wherein a protective layer (2) is arranged inside the metal mesh layer (1), a third insulating layer (3) is arranged inside the protective layer (2), an inner sheath layer (4) is arranged inside the third insulating layer (3), a conductor (5) is arranged inside the inner sheath layer (4), and a second insulating layer (6) is arranged outside the metal mesh layer (1); A metal shielding layer (7) is arranged outside the second insulating layer (6), a first insulating layer (8) is arranged outside the metal shielding layer (7), a waterproof layer (9) is arranged outside the first insulating layer (8), and an outer protective layer (10) is arranged outside the waterproof layer (9).

2. A freeze-resistant cable according to claim 1, characterized in that: The metal mesh layer (1) comprises a copper mesh (101) and a tin-plated layer (102), and the surface of the copper mesh (101) is coated with the tin-plated layer (102).

3. A freeze-resistant cable according to claim 1, characterized in that: The metal shielding layer (7) comprises an aluminum tape (701) and a polyethylene film (702), and the polyethylene film (702) is arranged outside the aluminum tape (701).

4. The antifreeze cable according to claim 1, characterized in that: The protective layer (2) is made of low-temperature cross-linked polyethylene.

5. The antifreeze cable according to claim 1, characterized in that: The first insulating layer (8), the second insulating layer (6) and the third insulating layer (3) are made of cross-linked polyvinyl chloride.

6. The antifreeze cable according to claim 1, characterized in that: The conductor (5) is made of copper or aluminum.

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