Flame-retardant high-temperature-resistant compensation cable

Abstract

The invention discloses a flame-retardant and high-temperature-resistant compensation cable which comprises a protection assembly, a second high-temperature-resistant layer is wrapped in the protection assembly, a groove is formed in the second high-temperature-resistant layer, a heat conduction piece is arranged in the groove, a plurality of holes are formed in the heat conduction piece, a cable body is inserted into the holes in a penetrating mode, and the cable body is arranged in the groove in a penetrating mode. A hollow cavity used for heat dissipation is formed between the heat conduction piece and the second high-temperature-resistant layer, and the second high-temperature-resistant layer is connected with the heat conduction piece through a connecting piece. According to the graded heat management mechanism, internal active heat dissipation is achieved, specifically, a three-dimensional heat conduction network is formed by an annular part of a heat conduction piece and a connecting structure, heat of a cable body is rapidly conducted to a hollow cavity, the stability of the cavity is maintained in cooperation with hard particle connecting pieces arranged in a linear mode, and dual heat dissipation of heat uniform spreading and air convection is achieved; and external double-layer protection: the first high-temperature-resistant layer resists external heat radiation, and the second high-temperature-resistant layer blocks internal heat diffusion, so that a gradient temperature-resistant barrier is formed. And the safety and the reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to a flame-retardant and high-temperature resistant compensating cable. Background Art

[0002] Compensating cables, as key components of industrial temperature measurement systems, are widely used in high-temperature applications such as metallurgy, chemical industry, and electric power. In existing technologies, compensating cables generally have the following defects:

[0003] Insufficient high-temperature stability: Traditional insulation materials are prone to aging and cracking in long-term high-temperature environments, leading to insulation failure (for example, the temperature resistance of polyvinyl chloride insulation is only 105°C);

[0004] Inefficient heat dissipation: When cables are densely arranged, local overheating occurs, accelerating material degradation and causing temperature measurement errors (existing technologies rely on increasing sheath thickness, which actually hinders heat dissipation);

[0005] Conflict between fire prevention and flexibility: Although adding rigid flame retardant materials such as ceramic fiber improves fire resistance, it seriously reduces the bending performance of the cable, making it difficult to adapt to complex laying environments. Summary of the Invention

[0006] The purpose of the present invention is to solve the above-mentioned problems of the background technology and to provide a flame-retardant and high-temperature resistant compensating cable.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A flame-retardant and high-temperature resistant compensating cable includes a protective component, the protective component is covered with a second high-temperature resistant layer, a groove is provided in the second high-temperature resistant layer, a heat conductor is provided in the groove, a plurality of holes are provided in the heat conductor, a cable body is inserted into the plurality of holes, a hollow cavity for heat dissipation is formed between the heat conductor and the second high-temperature resistant layer, and the second high-temperature resistant layer and the heat conductor are connected to each other by a connecting member.

[0009] As a further solution of the present invention: the protective component is sequentially covered with an insulating layer, a shielding layer, a flame retardant layer and a first high temperature resistant layer from the inside to the outside.

[0010] As a further solution of the present invention: the shape and structure of the heat conducting member match the groove.

[0011] As a further solution of the present invention: the heat conducting member includes a plurality of annular portions and a connecting structure, and the connecting structure is used to connect the plurality of annular portions to each other.

[0012] As a further solution of the present invention: the holes are opened on the annular portion and the connecting structure.

[0013] As a further solution of the present invention: the connecting member is a granular block, and a plurality of the connecting members are evenly distributed between the connecting structure and the second high-temperature resistant layer.

[0014] As a further solution of the present invention, a plurality of granular blocks are arranged in a straight line at equal intervals along the length direction of the cable.

[0015] As a further solution of the present invention: the granular blocks are made of hard material.

[0016] As a further solution of the present invention: the heat conducting member is made of heat conducting silicone material.

[0017] As a further solution of the present invention: the heat conducting member is a metal-based flexible composite material.

[0018] Beneficial effects of the present invention:

[0019] Hierarchical thermal management mechanism:

[0020] Internal active heat dissipation: The annular portion of the heat conductor and the connecting structure form a three-dimensional heat conduction network, which quickly transfers the heat from the cable body to the hollow cavity. The inline hard particle connectors maintain the stability of the cavity, achieving dual heat dissipation through heat distribution and air convection.

[0021] External double-layer protection: the first high-temperature resistant layer resists external heat radiation, and the second high-temperature resistant layer blocks internal heat diffusion, forming a gradient temperature-resistant barrier.

[0022] Improved security and reliability:

[0023] Flame retardant and high temperature resistant synergy: the flame retardant layer inhibits the spread of open flames;

[0024] Optimized anti-electromagnetic interference: The shielding layer tightly covers the insulation layer to avoid signal distortion caused by high temperature deformation.

[0025] Structural innovation and flexibility

[0026] Modular heat conduction design: The annular parts of the heat conducting parts are flexibly interconnected through a connection structure, and combined with the heat-conducting silicone / metal-based flexible composite material, the cable bending radius is reduced;

[0027] Anti-collapse of granular connectors: The equidistant arrangement of granular connectors allows axial deformation while maintaining the cavity gap to adapt to thermal expansion and contraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 It is a schematic cross-sectional structure diagram of the present invention;

[0030] Figure 2 yes Figure 1 Front view in

[0031] Figure 3 It is a schematic structural diagram of the protection assembly of the present invention;

[0032] Figure 4 Schematic diagram of the structure of the second high temperature resistant layer of the present invention;

[0033] Figure 5 It is a schematic structural diagram of the heat conducting member of the present invention.

[0034] In the figure: 1. Protective component; 101. Insulation layer; 102. Shielding layer; 103. Flame retardant layer; 104. First high-temperature resistant layer; 2. Second high-temperature resistant layer; 201. Groove; 202. Connector; 3. Heat-conducting member; 301. Ring portion; 302. Connection structure; 303. Hole; 4. Cable body. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] For example 1, please refer to Figure 1-5 As shown, the present invention is a flame-retardant and high-temperature resistant compensating cable, including a protective component 1, wherein the protective component 1 is coated with a second high-temperature resistant layer 2, a groove 201 is provided in the second high-temperature resistant layer 2, a heat-conducting member 3 is provided in the groove 201, a plurality of holes 303 are provided in the heat-conducting member 3, a cable body 4 is inserted into the plurality of holes 303, a hollow cavity for heat dissipation is formed between the heat-conducting member 3 and the second high-temperature resistant layer 2, and the second high-temperature resistant layer 2 and the heat-conducting member 3 are connected to each other by a connecting member 202.

[0037] For example 2, please refer to Figure 1-5 As shown, the present invention is a flame-retardant and high-temperature resistant compensating cable, comprising a protective component 1, which is sequentially covered with an insulating layer 101, a shielding layer 102, a flame-retardant layer 103 and a first high-temperature resistant layer 104 from the inside to the outside.

[0038] The protective component 1 is covered with a second high-temperature resistant layer 2, a groove 201 is provided in the second high-temperature resistant layer 2, a heat conductor 3 is provided in the groove 201, the shape structure of the heat conductor 3 matches the groove 201, a plurality of holes 303 are provided in the heat conductor 3, the heat conductor 3 includes a plurality of annular portions 301 and a connecting structure 302, the connecting structure 302 is used to connect the plurality of annular portions 301 to each other, the holes 303 are provided on the annular portions 301 and the connecting structure 302, a plurality of the holes 303 are inserted with cable bodies 4, a hollow cavity for heat dissipation is formed between the heat conductor 3 and the second high-temperature resistant layer 2, and the second high-temperature resistant layer 2 and the heat conductor 3 are connected to each other through the connecting member 202.

[0039] For example three, please refer to Figure 1-5 As shown, the present invention is a flame-retardant and high-temperature resistant compensating cable, comprising a protective component 1, which is sequentially covered with an insulating layer 101, a shielding layer 102, a flame-retardant layer 103 and a first high-temperature resistant layer 104 from the inside to the outside.

[0040] The protective component 1 comprises the following layered structure from the inside to the outside:

[0041] Insulation layer 101: the innermost layer, providing electrical insulation.

[0042] Shielding layer 102: Covered on the outside of the insulating layer 101, used for electromagnetic shielding.

[0043] The flame retardant layer 103 is coated on the outside of the shielding layer 102 and provides flame retardant properties.

[0044] The first high temperature resistant layer 104 is the outermost layer, providing basic high temperature protection.

[0045] The protective component 1 is covered with a second high-temperature resistant layer 2, a groove 201 is provided in the second high-temperature resistant layer 2, a heat-conducting part 3 is provided in the groove 201, the shape and structure of the heat-conducting part 3 match the groove 201, a plurality of holes 303 are provided in the heat-conducting part 3, the heat-conducting part 3 includes a plurality of annular parts 301 and a connecting structure 302, the connecting structure 302 is used to connect the plurality of annular parts 301 to each other, the holes 303 are provided on the annular parts 301 and the connecting structure 302, and the plurality of holes 303 are interspersed with cable bodies 4.

[0046] The heat received by the local cable is transferred to the heat-conducting member 3 through contact, and the heat-conducting member 3 diffuses the heat to its surface and the air in the groove 201, so that the local heat is evenly distributed.

[0047] A hollow cavity for heat dissipation is formed between the heat conductor 3 and the second high-temperature-resistant layer 2. The second high-temperature-resistant layer 2 and the heat conductor 3 are connected to each other via a connector 202. The connector 202 is a granular block, with multiple connectors 202 evenly distributed between the connecting structure 302 and the second high-temperature-resistant layer 2. The multiple granular blocks are arranged in a straight line and equidistantly along the length of the cable. The granular blocks are made of a hard material.

[0048] The granular hard blocks not only serve as a connection, but may also play a role in maintaining the cavity gap, preventing the heat conducting member 3 from collapsing, or optimizing the heat conduction path.

[0049] In another embodiment, the heat conducting member 3 is made of heat conducting silicone rubber.

[0050] In another embodiment, the heat conducting member 3 is a metal-based flexible composite material.

[0051] Among them, the choice of thermally conductive silicone or metal-based flexible composite materials is to balance thermal conductivity, flexibility and temperature resistance.

[0052] For example 4, please refer to Figure 1-5 As shown, the present invention is a flame-retardant and high-temperature resistant compensating cable, comprising a protective component 1, which is sequentially covered with an insulating layer 101, a shielding layer 102, a flame-retardant layer 103 and a first high-temperature resistant layer 104 from the inside to the outside.

[0053] The protective component 1 comprises the following layered structure from the inside to the outside:

[0054] Insulation layer 101: the innermost layer, providing electrical insulation.

[0055] Shielding layer 102: Covered on the outside of the insulating layer 101, used for electromagnetic shielding.

[0056] The flame retardant layer 103 is coated on the outside of the shielding layer 102 and provides flame retardant properties.

[0057] The first high temperature resistant layer 104 is the outermost layer, providing basic high temperature protection.

[0058] The insulating layer 101 is a polyvinyl chloride layer. As the most common insulating material, polyvinyl chloride can prevent excessive internal current from affecting the external environment. The shielding layer 102 is a copper wire braided layer. Copper is a non-magnetic material. It can shield the magnetic field generated by the internal circuit inside the cable to prevent the magnetic field from interfering with other cables or components. The flame retardant layer 103 is a thermoplastic elastomer layer, which is composed of styrene block copolymer elastomer, polyolefin resin, plasticizer and filler. When the cable burns inside, the fire can be controlled inside to prevent the fire from spreading to the outside. At the same time, the thermoplastic elastomer will not release toxic gases during the flame retardant process and will not cause harm to the environment. The first high-temperature resistant layer 104 and the second high-temperature resistant layer 2 are silicone rubber layers. Compared with ordinary heat-resistant materials, silicone rubber can withstand high temperatures above 200°C, and silicone rubber has excellent wear resistance and corrosion resistance. Even if it is immersed in oil and water for a long time, it will not be affected. At the same time, moving in oil and water will not cause damage to the surface.

[0059] The protective component 1 is covered with a second high-temperature resistant layer 2, a groove 201 is provided in the second high-temperature resistant layer 2, a heat-conducting part 3 is provided in the groove 201, the shape and structure of the heat-conducting part 3 match the groove 201, a plurality of holes 303 are provided in the heat-conducting part 3, the heat-conducting part 3 includes a plurality of annular parts 301 and a connecting structure 302, the connecting structure 302 is used to connect the plurality of annular parts 301 to each other, the holes 303 are provided on the annular parts 301 and the connecting structure 302, and the plurality of holes 303 are interspersed with cable bodies 4.

[0060] The heat received by the local cable is transferred to the heat-conducting member 3 through contact, and the heat-conducting member 3 diffuses the heat to its surface and the air in the groove 201, so that the local heat is evenly distributed.

[0061] A hollow cavity for heat dissipation is formed between the heat conductor 3 and the second high-temperature-resistant layer 2. The second high-temperature-resistant layer 2 and the heat conductor 3 are connected to each other via a connector 202. The connector 202 is a granular block, with multiple connectors 202 evenly distributed between the connecting structure 302 and the second high-temperature-resistant layer 2. The multiple granular blocks are arranged in a straight line and equidistantly along the length of the cable. The granular blocks are made of a hard material.

[0062] The granular hard blocks not only serve as a connection, but may also play a role in maintaining the cavity gap, preventing the heat conducting member 3 from collapsing, or optimizing the heat conduction path.

[0063] The advantages of this application structure are:

[0064] Hierarchical thermal management mechanism:

[0065] Active internal heat dissipation: The annular portion 301 of the heat conductor 3 and the connecting structure 302 form a three-dimensional heat conduction network, which quickly conducts the heat of the cable body 4 to the hollow cavity. Together with the inline hard particle connectors 202, the cavity stability is maintained, achieving dual heat dissipation through heat distribution and air convection, reducing local temperature rise by more than 40%.

[0066] External double-layer protection: the first high-temperature resistant layer 104 resists external heat radiation, and the second high-temperature resistant layer 2 blocks internal heat diffusion, forming a gradient temperature-resistant barrier.

[0067] Improved security and reliability:

[0068] Flame retardant and high temperature resistant synergy: The flame retardant layer 103 inhibits the spread of open flames, and the double high temperature resistant layer ensures structural integrity under 800℃ working conditions;

[0069] Optimized anti-electromagnetic interference: The shielding layer 102 tightly covers the insulating layer 101 to prevent signal distortion caused by high-temperature deformation.

[0070] Structural innovation and flexibility

[0071] Modular heat conduction design: The annular portion 301 of the heat conductor 3 is flexibly interconnected through the connection structure 302, and combined with the heat-conducting silicone / metal-based flexible composite material, the cable bending radius is reduced to 6 times the diameter;

[0072] Anti-collapse of granular connectors: The equidistant arrangement of the granular connectors 202 allows axial deformation while maintaining the cavity gap, adapting to thermal expansion and contraction.

[0073] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. A flame-retardant and high-temperature resistant compensating cable, comprising a protective component (1), characterized in that: The protective component (1) is coated with a second high-temperature resistant layer (2), a groove (201) is provided in the second high-temperature resistant layer (2), a heat-conducting member (3) is provided in the groove (201), a plurality of holes (303) are provided in the heat-conducting member (3), a cable body (4) is inserted into the plurality of holes (303), a hollow cavity for heat dissipation is formed between the heat-conducting member (3) and the second high-temperature resistant layer (2), and the second high-temperature resistant layer (2) and the heat-conducting member (3) are connected to each other via a connecting member (202).

2. The flame-retardant and high-temperature resistant compensating cable according to claim 1, characterized in that: The protective component (1) is sequentially coated with an insulating layer (101), a shielding layer (102), a flame retardant layer (103) and a first high temperature resistant layer (104) from the inside to the outside.

3. The flame-retardant and high-temperature resistant compensating cable according to claim 1, characterized in that: The shape and structure of the heat conducting member (3) match the groove (201).

4. The flame-retardant and high-temperature resistant compensating cable according to claim 3, characterized in that: The heat conducting member (3) comprises a plurality of annular portions (301) and a connecting structure (302), wherein the connecting structure (302) is used to connect the plurality of annular portions (301) to each other.

5. The flame-retardant and high-temperature resistant compensating cable according to claim 4, characterized in that: The hole (303) is opened on the annular portion (301) and the connecting structure (302).

6. The flame-retardant and high-temperature resistant compensating cable according to claim 1, characterized in that: The connecting piece (202) is a granular block, and a plurality of the connecting pieces (202) are evenly distributed between the connecting structure (302) and the second high-temperature resistant layer (2).

7. The flame-retardant and high-temperature resistant compensating cable according to claim 6, characterized in that: A plurality of granular blocks are arranged in a straight line at equal intervals along the length of the cable.

8. The flame-retardant and high-temperature resistant compensating cable according to claim 7, characterized in that: The granular blocks are made of hard material.

9. The flame-retardant and high-temperature resistant compensating cable according to claim 1, characterized in that: The heat conducting member (3) is made of heat conducting silica gel.

10. The flame-retardant and high-temperature resistant compensating cable according to claim 1, characterized in that: The heat conducting member (3) is a metal-based flexible composite material.

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