Heat-resistant cable used in high-temperature environment

Abstract

The utility model relates to the field of wire and cable industry, in particular to a heat-resistant cable used in a high-temperature environment. Technical problems are that an external sheath of a conventional cable is rapidly aged in a high-temperature environment, internal heat is not easy to lead out, and an internal lead is easy to break when the conventional cable is subjected to external impact or extrusion. According to the technical scheme, the heat-resistant cable used in the high-temperature environment comprises a shell assembly, a cable assembly, a compression-resistant assembly and a cooling assembly. According to the utility model, through the design that the shell assembly is composed of the glass fiber layer, the polytetrafluoroethylene layer and the silicone rubber layer, the heat insulation performance and the wear resistance are more excellent, the cable is not easy to age due to heating, and the cable is suitable for an external high-temperature working environment; heat accumulation in the cable is avoided, impact force can be absorbed in time through the arrangement of the miniature shock absorbers between the cables, the lead is prevented from being broken, and the problems are solved.

Description

Technical Field

[0001] The utility model belongs to the field of wire and cable industry, and particularly relates to a heat-resistant cable used in high-temperature environments. Background Art

[0002] In the wire and cable industry, a cable is an overall structure composed of multiple insulated wires or electric wires, and is usually used to transmit electricity, data or signals. With the development of industry and technological progress, industries such as petrochemical and steel have more stringent requirements for wire and cable used under high-temperature conditions. In the prior art, a conventional cable uses copper as the internal conductor and rubber and polyethylene as the external insulation sheath. Its high-temperature resistance performance is limited. In a high-temperature environment, the external sheath of the cable will age rapidly and the internal heat is not easily dissipated, resulting in a short service life and the need for frequent replacement, which has certain potential safety hazards. At the same time, due to the relatively soft texture of the copper conductor, during the process of pulling and threading the conventional cable, it is easily affected by external impacts or squeezes, resulting in the fracture of the internal copper conductor, which reduces the signal transmission ability of the cable. Therefore, a heat-resistant cable used in high-temperature environments is proposed to solve the above-mentioned problems. Content of the Utility Model

[0003] In order to overcome the problems that in the process of using a cable in a high-temperature environment, the external sheath of the conventional cable ages rapidly in a high-temperature environment and the internal heat is not easily dissipated, and at the same time, the internal conductor of the conventional cable is easily broken when it is affected by external impacts or squeezes.

[0004] The technical solution of the utility model is: a heat-resistant cable used in high-temperature environments, including a housing assembly, a cable assembly, a compression-resistant assembly and a temperature-lowering assembly; a cable assembly for power supply is arranged inside the housing assembly; a compression-resistant assembly for shock absorption and compression resistance is arranged inside the housing assembly; a temperature-lowering assembly for temperature reduction is arranged inside the housing assembly.

[0005] Preferably, through the design of the multi-layer protective and heat-insulating structure inside the housing assembly, compared with the conventional rubber-insulated sheath, the heat-insulating performance and anti-wear performance are more excellent, and it is not easily aged by heat. By arranging a temperature-lowering assembly inside the housing assembly, the relatively low ambient temperature inside the housing assembly can be maintained, solving the problems that the external sheath of the conventional cable ages rapidly in a high-temperature environment and the internal heat is not easily dissipated. By arranging a compression-resistant assembly on the cable assembly, when it is affected by external impacts or squeezes, the compression-resistant assembly can absorb the impact force in time to avoid damage to the cable assembly, solving the problem that the internal conductor of the conventional cable is easily broken when it is affected by external impacts or squeezes.

[0006] Preferably, the outer shell assembly includes a wear-resistant layer, a heat-insulating layer, a first protective layer, and a limiting groove; the inner wall of the wear-resistant layer is fixedly connected with the heat-insulating layer; the inner wall of the heat-insulating layer is fixedly connected with the first protective layer; the cross-sections of the wear-resistant layer, the heat-insulating layer, and the first protective layer are circular rings with gradually decreasing radii; the wear-resistant layer is made of fiberglass material, having excellent heat-insulating performance and good wear resistance, which can effectively prevent the skin of the cable from being damaged during the cable pulling and threading processes. The heat-insulating layer is made of polytetrafluoroethylene material, and polytetrafluoroethylene has excellent high-temperature tolerance and chemical stability, and can be used for a long time in the range of -100°C to +260°C. The first protective layer is a silicone rubber layer, and the silicone rubber material has excellent high-temperature resistance and can usually work at temperatures above 200°C without aging. The wear-resistant layer, the heat-insulating layer, and the first protective layer jointly form the outer protective layer of this cable, which is suitable for the working environment of external high temperature, can reduce the damage to the cable caused by the external environment and the internal heat generation of the cable, and extends the service life of the cable.

[0007] Preferably, the inner wall of the first protective layer is provided with limiting grooves that are evenly distributed in a circumferential manner about the center of the first protective layer; through the opening of the limiting grooves, the cable assembly can be wrapped and limited from the outside to prevent the cable assembly from deflecting inside the outer shell assembly.

[0008] Preferably, the cable assembly includes a second protective layer and a cable body; the second protective layer is movably arranged on the inner wall of the limiting groove; a plurality of mutually twisted cable bodies are movably arranged on the inner wall of the second protective layer; the second protective layer is made of silicone rubber material, which can provide external protection. The cable body is composed of a plurality of copper wires twisted together, making the cable body softer and more flexible, easier to bend and install, and adaptable to complex installation environments. At the same time, the twisted design is stronger than a single wire, can better resist tension and mechanical extrusion, improve the tensile strength and durability, and extend the service life.

[0009] Preferably, the compressive component includes a supporting block, a connecting block, a micro shock absorber, and a supporting block; the outer wall of the second protective layer is fixedly connected with evenly distributed supporting blocks at one end facing the center of the first protective layer; the cross-section of the supporting block is a semi-circular ring; one end of the supporting block facing the center of the first protective layer is fixedly connected with connecting blocks that are symmetrically distributed about the center of the supporting block; the fixed end of the micro shock absorber is fixedly connected to one end of the connecting block facing the center of the first protective layer; the output ends of eight micro shock absorbers distributed in a circumferential manner are jointly fixedly connected with a supporting block; installation grooves are formed through the front and rear ends of the supporting block; through the setting of the supporting block, it plays a role in supporting the cable assembly. There are micro shock absorbers arranged between the supporting block and the supporting block. When the cable is subjected to external impact or rolling, the cable assembly will displace inward under the action of pressure, and the micro shock absorbers will absorb and eliminate most of the impact force, preventing the force from directly acting on the cable assembly and causing the cable body to break, ensuring the smoothness of the cable connection, and solving the problem that the internal wires of conventional cables are easily broken when subjected to external impact or extrusion.

[0010] Preferably, the cooling component includes a guide rod, a through groove, a heat dissipation groove, and a cooling pipe; the inner walls of a plurality of mounting grooves are fixedly connected to the guide rod together; through grooves are formed through the front and rear ends of the guide rod; the inner wall of the through groove is fixedly connected to the cooling pipe; through the arrangement of the cooling pipe, when the cable is working in a high-temperature environment, by conducting the coolant along the inside of the cooling pipe, the coolant will be heated and evaporated to absorb heat, cooling the cable assembly, avoiding the accumulation of internal heat in the outer shell assembly, and solving the problem that the external rubber layer of a conventional cable will age rapidly in a high-temperature environment and the internal heat is not easily dissipated.

[0011] Preferably, a plurality of heat dissipation grooves evenly distributed in a circumferential manner are formed through the outer wall of the guide rod; the heat dissipation grooves are communicated with the internal spaces of the through groove and the first protective layer; through the arrangement of the heat dissipation grooves, a channel for heat exchange between the cooling pipe and the outside is provided, which helps to reduce the internal heat of the outer shell assembly and extend the service life of the cable assembly.

[0012] The beneficial effects of the present utility model:

[0013] 1. The wear-resistant layer is made of fiberglass material, having excellent heat insulation performance and good wear resistance, which can effectively prevent the surface of the cable from being damaged during the cable pulling and threading processes. The heat insulation layer is made of polytetrafluoroethylene material, and polytetrafluoroethylene has excellent high-temperature tolerance and chemical stability, and can be used for a long time in the range of -100°C to +260°C. The first protective layer is a silicone rubber layer, and the silicone rubber material has excellent high-temperature resistance and can usually work at a temperature above 200°C without aging. The wear-resistant layer, the heat insulation layer, and the first protective layer jointly form the outer protective layer of this cable, which is suitable for the external high-temperature working environment, can reduce the damage to the cable caused by the external environment and the internal heat generation of the cable, and extend the service life of the cable;

[0014] 2. Through the arrangement of the cooling pipe, when the cable is working in a high-temperature environment, by conducting the coolant along the inside of the cooling pipe, the coolant will be heated and evaporated to absorb heat, cooling the cable assembly, avoiding the accumulation of internal heat in the outer shell assembly, and solving the problem that the external sheath of a conventional cable will age rapidly in a high-temperature environment and the internal heat is not easily dissipated;

[0015] 3. By arranging a micro shock absorber between the supporting block and the supporting block, when the cable is impacted or rolled by the outside, the cable assembly will displace inward under the action of the pressure, and the micro shock absorber will absorb and eliminate most of the impact force, preventing the force from directly acting on the cable assembly and causing the cable body to break, ensuring the smooth connection of the cable, and solving the problem that the internal wires of a conventional cable are easily broken when being impacted or squeezed by the outside. Description of the Drawings

[0016] Figure 1The figure shows a three-dimensional structural schematic diagram of a heat-resistant cable used in a high-temperature environment according to the present utility model;

[0017] Figure 2 The figure shows a front-sectional three-dimensional structural schematic diagram of a heat-resistant cable used in a high-temperature environment according to the present utility model;

[0018] Figure 3 The figure shows a three-dimensional structural schematic diagram of a housing assembly of a heat-resistant cable used in a high-temperature environment according to the present utility model;

[0019] Figure 4 The figure shows a three-dimensional structural schematic diagram of a cable assembly and a compressive component of a heat-resistant cable used in a high-temperature environment according to the present utility model;

[0020] Figure 5 The figure shows a three-dimensional structural schematic diagram of a cooling component of a heat-resistant cable used in a high-temperature environment according to the present utility model.

[0021] The reference signs in the drawings are: 1 - housing assembly, 101 - wear-resistant layer, 102 - heat-insulating layer, 103 - first protective layer, 104 - limiting groove, 2 - cable assembly, 201 - second protective layer, 202 - cable body, 3 - compressive component, 301 - supporting block, 302 - connecting block, 303 - micro shock absorber, 304 - supporting block, 305 - installation groove, 4 - cooling component, 401 - guide rod, 402 - through groove, 403 - heat dissipation groove, 404 - cooling pipe. Detailed implementation manners

[0022] The present utility model will be further described below with reference to the drawings and embodiments.

[0023] Please refer to Figure 1 and Figure 2 , the present utility model provides an embodiment: a heat-resistant cable used in a high-temperature environment, including a housing assembly 1, a cable assembly 2, a compressive component 3, and a cooling component 4; a cable assembly 2 for power supply is arranged inside the housing assembly 1; a compressive component 3 for shock absorption and pressure resistance is arranged inside the housing assembly 1; a cooling component 4 for cooling is arranged inside the housing assembly 1.

[0024] Please refer to Figure 3 , in this embodiment, the housing assembly 1 includes a wear-resistant layer 101, a heat-insulating layer 102, a first protective layer 103, and a limiting groove 104; the heat-insulating layer 102 is fixedly connected to the inner wall of the wear-resistant layer 101; the first protective layer 103 is fixedly connected to the inner wall of the heat-insulating layer 102; the cross-sections of the wear-resistant layer 101, the heat-insulating layer 102, and the first protective layer 103 are circular rings with gradually decreasing radii; the inner wall of the first protective layer 103 is provided with limiting grooves 104 that are evenly distributed in a circumferential manner around the center of the first protective layer 103.

[0025] Please refer to Figure 4 , in this embodiment, the cable assembly 2 includes a second protective layer 201 and a cable body 202; the second protective layer 201 is movably arranged on the inner wall of the limiting groove 104; a plurality of mutually twisted cable bodies 202 are movably arranged on the inner wall of the second protective layer 201; the compression resistance assembly 3 includes a supporting block 301, a connecting block 302, a micro shock absorber 303 and a supporting block 304; uniformly distributed supporting blocks 301 are fixedly connected to one end of the outer wall of the second protective layer 201 facing the center of the first protective layer 103; the cross section of the supporting block 301 is in a semi-circular ring shape; connecting blocks 302 symmetrically distributed about the center of the supporting block 301 are fixedly connected to one end of the supporting block 301 facing the center of the first protective layer 103; the fixed end of the micro shock absorber 303 is fixedly connected to one end of the connecting block 302 facing the center of the first protective layer 103; the output ends of eight micro shock absorbers 303 distributed in a circumferential manner are commonly fixedly connected to a supporting block 304; mounting grooves 305 are formed through the front and rear ends of the supporting block 304.

[0026] Please refer to Figure 5 , in this embodiment, the temperature reduction assembly 4 includes a guide rod 401, a through groove 402, a heat dissipation groove 403 and a cooling pipe 404; guide rods 401 are fixedly connected to the inner walls of a plurality of mounting grooves 305; through grooves 402 are formed through the front and rear ends of the guide rod 401; a cooling pipe 404 is fixedly connected to the inner wall of the through groove 402; a plurality of heat dissipation grooves 403 uniformly distributed in a circumferential manner are formed through the outer wall of the guide rod 401; the heat dissipation grooves 403 are communicated with the through groove 402 and the internal space of the first protective layer 103.

[0027] When working, first complete the installation and laying of this cable. Since the wear-resistant layer 101 has good wear resistance, it can effectively prevent the skin from being damaged during the cable pulling and threading processes, and can also prevent the nibbling of insects and rodents after the installation is completed;

[0028] When this cable works in a high-temperature environment, the heat insulation layer 102 and the first protective layer 103 can effectively isolate the heat outside the housing assembly 1, prevent the heat from invading the cable assembly 2 and reducing the service life of the cable body 202. At the same time, coolant is introduced into the cooling pipe 404 to cool down multiple groups of cable assemblies 2 arranged around the cooling pipe 404, avoiding the heat accumulation inside the housing assembly 1;

[0029] When this cable is impacted or squeezed by the outside world, the cable assembly 2 will move inward to the housing assembly 1 due to the force and squeeze the micro shock absorber 303. The micro shock absorber 303 will absorb and eliminate most of the impact force to avoid the fracture of the cable body 202.

[0030] Through the above steps, due to the design of the multi-layer protective and heat-insulating structure within the outer shell component 1, compared with the conventional rubber-insulated sheath, the heat-insulating performance and abrasion resistance are more excellent, and it is not easily thermally aged. By arranging the cooling component 4 inside the outer shell component 1, the relatively low environmental temperature inside the outer shell component 1 can be maintained, solving the problem that the outer sheath of the conventional cable will quickly age in a high-temperature environment and the heat inside is not easily dissipated. By arranging the compressive component 3 on the cable component 2, when subjected to external impact or extrusion, the compressive component 3 can timely absorb the impact force to avoid damage to the cable component 2, solving the problem that the internal wires of the conventional cable are easily broken when subjected to external impact or extrusion.

[0031] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can also be made without departing from the purpose of the present invention.

Claims

1. A heat-resistant cable for use in a high-temperature environment, comprising a housing assembly (1); characterized in that: It also includes a cable assembly (2), a pressure-resistant assembly (3) and a cooling assembly (4); the housing assembly (1) is provided with a cable assembly (2) for power supply; the housing assembly (1) is provided with a pressure-resistant assembly (3) for shock absorption and pressure resistance; and the housing assembly (1) is provided with a cooling assembly (4) for cooling.

2. A heat-resistant cable for use in a high temperature environment according to claim 1, characterized in that: The housing component (1) comprises a wear-resistant layer (101), a heat-insulating layer (102), a first protective layer (103) and a limiting groove (104); the inner wall of the wear-resistant layer (101) is fixedly connected to the heat-insulating layer (102); the inner wall of the heat-insulating layer (102) is fixedly connected to the first protective layer (103); and the cross-sections of the wear-resistant layer (101), the heat-insulating layer (102) and the first protective layer (103) are in the shape of a circular ring with successively decreasing radii.

3. A heat-resistant cable for use in a high temperature environment according to claim 2, characterized in that: The inner wall of the first protective layer (103) is provided with limiting grooves (104) which are evenly distributed in a circumference about the center of the first protective layer (103).

4. A heat-resistant cable for use in a high temperature environment according to claim 3, characterized in that: The cable assembly (2) comprises a second protective layer (201) and a cable body (202); the inner wall of the limiting groove (104) is movably provided with the second protective layer (201); and the inner wall of the second protective layer (201) is movably provided with a plurality of cable bodies (202) twisted together.

5. The heat-resistant cable for use in a high temperature environment according to claim 1, characterized in that: The pressure-resistant component (3) comprises a support block (301), a connecting block (302), a micro shock absorber (303) and a support block (304); the outer wall of the second protective layer (201) is fixedly connected to one end facing the center of the first protective layer (103) with evenly distributed support blocks (301); the cross section of the support block (301) is semicircular; the end of the support block (301) facing the center of the first protective layer (103) is fixedly connected to the connecting block (302) symmetrically distributed about the center of the support block (301); the end of the connecting block (302) facing the center of the first protective layer (103) is fixedly connected to the fixed end of the micro shock absorber (303); the output ends of eight circumferentially distributed micro shock absorbers (303) are commonly fixedly connected to the support block (304); and mounting grooves (305) are provided through the front and rear ends of the support block (304).

6. A heat-resistant cable for use in a high temperature environment according to claim 5, characterized in that: The cooling component (4) comprises a guide rod (401), a through slot (402), a heat dissipation slot (403) and a cooling pipe (404); the inner walls of the plurality of mounting slots (305) are fixedly connected to the guide rod (401); the through slots (402) are provided through the front and rear ends of the guide rod (401); and the inner wall of the through slot (402) is fixedly connected to the cooling pipe (404).

7. A heat-resistant cable for use in a high temperature environment according to claim 6, characterized in that: The outer wall of the guide rod (401) is penetrated by a plurality of heat dissipation grooves (403) evenly distributed in a circumference; the heat dissipation grooves (403) are connected to the through grooves (402) and the internal space of the first protective layer (103).

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