Pressure-resistant and heat-resistant wire cable

Abstract

The utility model discloses a pressure-resistant and heat-resistant wire cable, relates to the field of cables, and aims to solve the problems that although the cable is protected in the prior art, when the cable is used in a high-pressure and high-temperature environment for a long time, the performance of the cable is reduced, the insulation is aged and the like, and the normal operation of a system is influenced. The cable comprises a plurality of cable cores, the cable cores are arranged in an annular array mode, the cable cores are wrapped by a shielding layer, a tensile layer is arranged on the outer side of the shielding layer, a heat-resistant composite layer is arranged on the outer side of the tensile layer, and the heat-resistant composite layer is composed of a heat insulation layer, a reinforcing layer and a fireproof layer. A composite corrosion-resistant layer is arranged on the outer side of the heat-resistant composite layer, and the composite corrosion-resistant layer is composed of a corrosion-resistant layer, a reinforcing layer and a wear-resistant layer, so that the influence of an external high-temperature environment on the interior of the cable can be isolated, the cable can still operate normally at a high temperature, meanwhile, the fireproof performance of the cable is enhanced, and the safety of the cable is improved.

Description

Technical Field

[0001] This utility model relates to the field of cables, specifically a pressure-resistant and heat-resistant wire and cable. Background Technology

[0002] A cable is a conductor used for transmitting electricity or information. It typically consists of one or more insulated conductors encased in an outer insulating layer. These conductors can be non-ferrous metals with excellent conductivity, such as copper or aluminum. Cables ensure the safe and stable transmission of electricity or information from one location to another and are widely used in various fields including power, communications, construction, industry, and transportation. They are characterized by internal conductivity and external insulation, enabling them to maintain stable performance in complex environments.

[0003] For example, CN212907177U describes an overhead cable comprising: a carbon fiber core, an inner buffer layer covering the outer side of the carbon fiber core, multiple circular conductive aluminum conductors twisted together on the outer side of the inner buffer layer, a first conductive core forming a ring structure with the multiple circular conductive aluminum conductors, multiple fan-shaped conductive aluminum conductors arranged on the outer side of the circular conductive aluminum conductors, a second conductive core forming a ring structure with the multiple fan-shaped conductive aluminum conductors, and an insulation layer, a fiber braided layer, an outer buffer layer, and an outer sheath sequentially covering the outer side of the fan-shaped conductive aluminum conductors. The cable of this utility model is lightweight, has a load-bearing structure, low laying cost, strong tensile strength, and high reliability.

[0004] While the aforementioned technologies provide cable protection, considering that cables are used in high-voltage and high-temperature environments for extended periods, they often experience performance degradation and insulation aging, which can affect the normal operation of the system. Therefore, there is an urgent market need to develop a pressure-resistant and heat-resistant wire and cable to help people solve these existing problems. Utility Model Content

[0005] The purpose of this utility model is to provide a pressure-resistant and heat-resistant wire and cable to solve the problem mentioned in the background art that although the prior art achieves cable protection, considering that the cable is used in a high-voltage and high-temperature environment for a long time, the cable will often experience problems such as performance degradation and insulation aging, which will affect the normal operation of the system.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure-resistant and heat-resistant wire and cable, comprising cable cores, wherein multiple sets of cable cores are arranged in a ring array, and a shielding layer is wrapped around the outside of the multiple cable cores. A tensile layer is provided outside the shielding layer, and a heat-resistant composite layer is provided outside the tensile layer. The heat-resistant composite layer is composed of a heat insulation layer, a reinforcing layer, and a fireproof layer. A composite corrosion-resistant layer is provided outside the heat-resistant composite layer, and the composite corrosion-resistant layer is composed of a corrosion-resistant layer, a reinforcing layer, and a wear-resistant layer.

[0007] Preferably, the cable core consists of an inner insulation layer and a conductor. The inner insulation layer is disposed on the outside of the conductor, and the conductor is made of multiple copper wires twisted together. The inner insulation layer is wrapped around the outside of the conductor by extrusion.

[0008] Preferably, a filling layer is provided between the shielding layer and the outer side of the plurality of cable cores, the shielding layer material is semiconductor rubber tape, and the shielding layer is fixed to the outside of the filling layer by wrapping.

[0009] Preferably, the tensile layer is woven from aramid fibers and is fixed to the outside of the shielding layer by spiral winding.

[0010] Preferably, the heat insulation layer is made of highly flexible nitrile rubber sleeve, the heat insulation layer is fixed to the outside of the tensile layer by extrusion, the reinforcing layer is made of asbestos tape and fixed to the outside of the heat insulation layer by wrapping, and the fireproof layer is made of halogen-free low-smoke flame-retardant polyolefin material and is wrapped to the outside of the reinforcing layer by an extrusion device.

[0011] Preferably, the corrosion-resistant layer is made of polytetrafluoroethylene and is fixed to the outside of the reinforcing and fireproof layers by extrusion, and the reinforcing layer is made of glass fiber and is fixed to the outside of the corrosion-resistant layer by mesh weaving.

[0012] Preferably, the wear-resistant layer is made of thermoplastic polyurethane material and is fixed to the outside of the reinforcing layer by extrusion.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, the heat-resistant composite layer is composed of a heat insulation layer, a reinforcing layer and a fireproof layer. It can isolate the influence of the external high temperature environment on the inside of the cable, protect the cable from running normally at high temperature, and enhance the fire resistance of the cable and improve the safety of the cable.

[0015] (2) In this utility model, the composite corrosion-resistant layer is composed of a corrosion-resistant layer, a reinforcing layer and a wear-resistant layer. The corrosion-resistant layer is made of polytetrafluoroethylene, which has extremely strong corrosion resistance and chemical stability and can effectively resist the erosion of various strong acids, strong alkalis and organic solvents. The reinforcing layer is made of glass fiber, which further enhances the mechanical strength and wear resistance of the cable. The wear-resistant layer is made of thermoplastic polyurethane, which has excellent wear resistance and tear resistance and can resist the friction and wear of the cable during laying and use, thus extending the service life of the cable.

[0016] (3) In this utility model, multiple sets of cable cores are arranged in a ring array and a filling layer is set to tightly fill the gaps between the cable cores, which effectively improves the cable's resistance to pressure and impact and structural stability. At the same time, the conductor is made of multiple copper wires twisted together, which not only ensures excellent conductivity but also enhances the cable's mechanical strength and flexibility, so that the cable can still maintain good transmission performance in complex environments. Attached Figure Description

[0017] Figure 1 This is a perspective view of a pressure-resistant and heat-resistant wire and cable according to the present invention.

[0018] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the heat-resistant composite layer structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the composite corrosion-resistant layer structure of this utility model.

[0021] In the diagram: 1. Cable core; 101. Inner insulation layer; 102. Conductor; 2. Filler layer; 3. Shielding layer; 4. Tensile layer; 5. Heat-resistant composite layer; 501. Heat insulation layer; 502. Reinforcing layer; 503. Fireproof layer; 6. Composite corrosion-resistant layer; 601. Corrosion-resistant layer; 602. Reinforcing layer; 603. Wear-resistant layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 The present invention provides an embodiment of a pressure-resistant and heat-resistant wire and cable, comprising a cable core 1, wherein multiple sets of cable cores 1 are arranged in a ring array, and the cable core 1 is composed of an inner insulation layer 101 and a conductor 102. The inner insulation layer 101 is disposed outside the conductor 102, and the conductor 102 is formed by multiple copper wires twisted together. The inner insulation layer 101 is wrapped around the conductor 102 by extrusion. The conductor formed by multiple copper wires twisted together not only has excellent conductivity, but also enhances the mechanical strength and flexibility of the cable.

[0024] Please see Figure 1-2Multiple cable cores 1 are wrapped with a shielding layer 3. A filler layer 2, made of asbestos rope, is placed between the shielding layer 3 and the outer surfaces of the cable cores 1, forming a barrier that effectively protects the cable cores from external physical impacts and mechanical bending, improving the cable's resistance to pressure and impact. The shielding layer 3 is made of semiconductor rubber tape and is fixed to the outside of the filler layer 2 by wrapping. It effectively shields against external electromagnetic interference, protecting the internal signal transmission of the cable from interference. Simultaneously, the semiconductor rubber tape also has a certain degree of elasticity and wear resistance, resisting external mechanical damage and abrasion. A tensile layer 4, made of aramid fiber, is placed outside the shielding layer 3. This tensile layer 4 has extremely high tensile strength and wear resistance, effectively resisting the tensile and torsional forces experienced by the cable during laying and use, ensuring the cable's structural integrity and service life. The tensile layer 4 is fixed to the outside of the shielding layer 3 by spiral winding.

[0025] Please see Figure 1 , Figure 2 and Figure 3 The tensile layer 4 is surrounded by a heat-resistant composite layer 5, which consists of a heat insulation layer 501, a reinforcing layer 502, and a fireproof layer 503. The heat insulation layer 501 uses a highly flexible nitrile rubber sheath, possessing excellent heat insulation and oil resistance. It effectively isolates the cable from the effects of high-temperature environments, protecting it and ensuring normal operation even at high temperatures. The oil resistance of nitrile rubber also prevents damage from contact with oily substances. The heat insulation layer 501 is fixed to the outside of the tensile layer 4 by extrusion. The reinforcing layer 502 uses asbestos tape, fixed to the outside of the heat insulation layer 501 by wrapping, further enhancing the cable's mechanical strength and heat resistance. The asbestos tape has good high-temperature resistance and fire resistance, maintaining the cable's structural stability in extreme high-temperature environments. The fireproof layer 503 uses halogen-free, low-smoke, flame-retardant polyolefin material, extruded over the outside of the reinforcing layer 502, providing excellent fire resistance and environmental performance, effectively preventing the spread of fire and smoke.

[0026] Please see Figure 1 , Figure 2 and Figure 4A composite corrosion-resistant layer 6 is provided on the outside of the heat-resistant composite layer 5. The composite corrosion-resistant layer 6 consists of a corrosion-resistant layer 601, a reinforcing layer 602, and a wear-resistant layer 603. The corrosion-resistant layer 601 is made of polytetrafluoroethylene (PTFE) and is fixed to the outside of the reinforcing and fire-resistant layer 503 by extrusion, exhibiting extremely strong corrosion resistance and chemical stability. It can resist the erosion of various strong acids, strong alkalis, and organic solvents, protecting the cable's interior from external corrosive substances. The reinforcing layer 602 is made of glass fiber and is fixed to the outside of the corrosion-resistant layer 601 by mesh weaving, further enhancing the cable's mechanical strength and wear resistance. Glass fiber is characterized by high strength, lightweight, and corrosion resistance, improving the overall structural stability and service life of the cable. The wear-resistant layer 603 is made of thermoplastic polyurethane and is fixed to the outside of the reinforcing layer 602 by extrusion, possessing excellent wear resistance and tear resistance. It can resist friction and wear experienced by the cable during laying and use, protecting the cable surface from damage and extending the cable's service life.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pressure-resistant and heat-resistant wire and cable, comprising a cable core (1), characterized in that: The cable cores (1) are arranged in multiple sets in a ring array. Each cable core (1) is wrapped with a shielding layer (3). A tensile layer (4) is provided on the outside of the shielding layer (3). A heat-resistant composite layer (5) is provided on the outside of the tensile layer (4). The heat-resistant composite layer (5) is composed of a heat insulation layer (501), a reinforcing layer (502), and a fireproof layer (503). A composite corrosion-resistant layer (6) is provided on the outside of the heat-resistant composite layer (5). The composite corrosion-resistant layer (6) is composed of a corrosion-resistant layer (601), a reinforcing layer (602), and a wear-resistant layer (603).

2. The voltage-resistant and heat-resistant wire and cable according to claim 1, characterized in that: The cable core (1) consists of an inner insulation layer (101) and a conductor (102). The inner insulation layer (101) is disposed outside the conductor (102). The conductor (102) is made of multiple copper wires twisted together. The inner insulation layer (101) is wrapped around the conductor (102) by extrusion.

3. The voltage-resistant and heat-resistant wire and cable according to claim 1, characterized in that: A filling layer (2) is provided between the shielding layer (3) and the outer side of the multiple cable cores (1). The shielding layer (3) is made of semiconductor rubber tape and is fixed to the outside of the filling layer (2) by wrapping.

4. The voltage-resistant and heat-resistant wire and cable according to claim 1, characterized in that: The tensile layer (4) is woven from aramid fibers and is fixed to the outside of the shielding layer (3) by spiral winding.

5. The voltage-resistant and heat-resistant wire and cable according to claim 1, characterized in that: The heat insulation layer (501) is made of highly flexible nitrile rubber sleeve. The heat insulation layer (501) is fixed to the outside of the tensile layer (4) by extrusion. The reinforcing layer (502) is made of asbestos tape and fixed to the outside of the heat insulation layer (501) by wrapping. The fireproof layer (503) is made of halogen-free low-smoke flame-retardant polyolefin material and is wrapped to the outside of the reinforcing layer (502) by extrusion device.

6. The voltage-resistant and heat-resistant wire and cable according to claim 1, characterized in that: The corrosion-resistant layer (601) is made of polytetrafluoroethylene and is fixed to the outside of the fireproof layer (503) by extrusion. The reinforcement layer (602) is made of glass fiber and is fixed to the outside of the corrosion-resistant layer (601) by mesh weaving.

7. The voltage-resistant and heat-resistant wire and cable according to claim 1, characterized in that: The wear-resistant layer (603) is made of thermoplastic polyurethane material and is fixed to the outside of the reinforcing layer (602) by extrusion.

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