Flexible high-temperature-resistant composite cable

Abstract

The utility model relates to the technical field of cables, and provides a flexible high-temperature-resistant composite cable, which comprises a power cable core, a cable core assembly framework, a plurality of signal cable core pairs, a plurality of control cable cores, an isolating layer, a support ring, an inner protective layer and an outer protective layer, and is characterized in that the power cable core is coaxially assembled in a first assembly cavity of the cable core assembly framework; the plurality of signal wire core pairs are arranged in the second assembling cavity of the wire core assembling framework in a one-to-one correspondence mode, the isolating layer wraps the outer side of the wire core assembling framework, and the plurality of control wire cores are assembled in gaps formed by the isolating layer and the adjacent arc-shaped protrusions of the wire core assembling framework in a one-to-one correspondence mode. The inner protection layer and the outer protection layer are coaxially arranged on the outer side of the isolation layer, and the supporting ring is arranged in a gap between the inner protection layer and the isolation layer. According to the utility model, energy transmission, signal transmission and control transmission can be integrated, the high-temperature-resistant current-carrying capability, the bending performance and the anti-vibration capability are improved, the anti-electromagnetic interference capability is improved, the line safety is improved, and the comprehensive cost of the line is reduced.

Description

Technical Field

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

[0002] Energy and signal transmission are the basic guarantee for maintaining the normal operation of human society, and wires and cables are key components for energy and signal transmission. With the continuous development of the application end, the comprehensive performance requirements for wires and cables are also constantly increasing. In particular, for wires and cables used in application terminals such as high safety requirements, complex environments, and major equipment, transmission performance, safety performance, and installation and laying performance are the focus of research in this field. In practical applications, the transmission performance, safety performance, and installation and laying performance of wires and cables are contradictory performance indicators. Improving the transmission performance of wires and cables will increase the safety burden of their operation and service, while improving the transmission performance will also increase the size and rigidity of the overall component and reduce the installation and laying performance of the component.

[0003] Therefore, how to improve the transmission capacity of wires and cables while ensuring safe service performance and improving the installation and laying performance of wires and cables, thereby significantly improving the transmission capacity and safety reliability of the lines, improving the comprehensive utilization rate of the lines, and reducing line costs, is an urgent problem to be solved. Utility Model Content

[0004] In view of this, in order to overcome the deficiencies of the prior art, the utility model aims to provide a flexible high temperature resistant composite cable.

[0005] The utility model provides a flexible high-temperature resistant composite cable, which comprises an electric power cable core, a core assembly skeleton, a plurality of signal core pairs, a plurality of control cores, an isolation layer, a support ring, an inner sheath and an outer sheath, a first assembly cavity is arranged on the inner side of a skeleton body of the core assembly skeleton, a plurality of arc-shaped protrusions integrally connected with the skeleton body are arranged on the outer circumference of the skeleton body, a plurality of second assembly cavities with elliptical cross-sections are arranged in the arc-shaped protrusions one by one, the electric power cable core is coaxially assembled in the first assembly cavity of the core assembly skeleton, a plurality of signal core pairs are arranged in the second assembly cavity of the core assembly skeleton one by one, the isolation layer is coated on the outer side of the core assembly skeleton, a plurality of control cores are assembled in the gap formed by the isolation layer and adjacent arc-shaped protrusions of the core assembly skeleton one by one, the inner sheath and the outer sheath are coaxially arranged on the outer side of the isolation layer, and the support ring is arranged in the gap between the inner sheath and the isolation layer.

[0006] Preferably, in the flexible high temperature resistant composite cable of the utility model, the major axis of the elliptical cross-section of the second assembly cavity arranged in the arc-shaped protrusion of the core assembly skeleton is colinear with the center of the first assembly cavity, and the minor axis of the elliptical cross-section of the second assembly cavity is two-thirds of the major axis.

[0007] Preferably, in the flexible high temperature resistant composite cable of the utility model, a plurality of pressure-bearing fluid channels are arranged on the circumference of the wire core assembly skeleton, and the pressure-bearing fluid channels are arranged one by one on the skeleton body between adjacent second assembly cavities.

[0008] Preferably, in the flexible high temperature resistant composite cable of the present invention, the pressure fluid channel has a circular cross section, and the center of the circular cross section of the pressure fluid channel is equidistant from the center of the elliptical cross section of the adjacent second assembly cavity.

[0009] Preferably, in the flexible high temperature resistant composite cable of the present invention, the power line core is composed of a power line core conductor and a first power line core insulation layer and a second power line core insulation layer coated on the outside of the power line core conductor.

[0010] Preferably, in the flexible high temperature resistant composite cable of the utility model, the signal core pair is made by symmetrically spirally twisting a first signal core and a second signal core, the outer diameters of the first signal core and the second signal core are equal, and the sum of the outer diameters of the first signal core and the second signal core is equal to the major axis of the elliptical cross-section of the second assembly cavity arranged in the arc-shaped protrusion of the core assembly skeleton.

[0011] Preferably, in the flexible high temperature resistant composite cable of the present invention, the first signal core is composed of a first signal transmission body and a first signal core insulation layer coated on the outside of the first signal transmission body, and the second signal core is composed of a second signal transmission body and a second signal core insulation layer coated on the outside of the second signal transmission body.

[0012] Preferably, in the flexible high temperature resistant composite cable of the utility model, the control core is composed of a control core conductor and a control core insulation layer coated on the outside of the control core conductor.

[0013] Preferably, in the flexible high temperature resistant composite cable of the utility model, the cross section of the support ring as a whole is composed of multiple peak sections and multiple trough sections, the peak section and the trough section are adjacently arranged and integrally connected, and the height of the peak section is equal to the depth of the trough section.

[0014] Preferably, in the flexible high-temperature resistant composite cable of the utility model, the apex of the wave peak section of the cross-section of the support ring is collinear with the center of the control core and the center of the first assembly cavity arranged inside the skeleton body of the core assembly skeleton, and the apex of the wave valley section of the cross-section of the support ring is collinear with the major axis of the elliptical cross-section of the second assembly cavity arranged in the arc-shaped protrusion of the core assembly skeleton and the center of the first assembly cavity.

[0015] The flexible high-temperature resistant composite cable of the utility model, through comprehensive structural design and material selection, integrates energy transmission, signal transmission and control transmission, while improving high-temperature resistant current carrying capacity, bending performance and vibration resistance, while improving anti-electromagnetic interference ability, improving line safety and reducing comprehensive line costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic structural diagram of a flexible high temperature resistant composite cable according to an embodiment of the utility model;

[0018] Figure 2 This is a structural example diagram of a wire core assembly skeleton of a flexible high temperature resistant composite cable according to an embodiment of the utility model;

[0019] Figure 3 This is a structural example diagram of a power line core of a flexible high temperature resistant composite cable according to an embodiment of the utility model;

[0020] Figure 4 This is an example diagram of the local structure of a flexible high temperature resistant composite cable according to an embodiment of the utility model;

[0021] Figure 5 This is a structural example diagram of a support ring of a flexible high temperature resistant composite cable according to an embodiment of the utility model;

[0022] In the figure, 1-power cable core, 2-core assembly skeleton, 3-signal core pair, 4-control core, 5-isolation layer, 6-support ring, 7-inner sheath, 8-outer sheath, 11-power core conductor, 12-first insulation layer of power core, 13-second insulation layer of power core, 21-skeleton body, 22-first assembly cavity, 23-arc-shaped protrusion, 24-second assembly cavity, 25-pressure fluid channel, 31-first signal core, 32-second signal core, 311-first signal transmission body, 312-first signal core insulation layer, 321-second signal transmission body, 322-second signal core insulation layer, 41-control core conductor, 42-control core insulation layer, 61-peak section, 62-trough section. DETAILED DESCRIPTION

[0023] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0024] Figure 1FIG. 1 is a schematic diagram of the structure of a flexible high temperature resistant composite cable according to an embodiment of the utility model. Figure 1 As shown, the flexible high temperature resistant composite cable of this embodiment includes a power cable core 1, a core assembly skeleton 2, a plurality of signal core pairs 3, a plurality of control cores 4, an isolation layer 5, a support ring 6, an inner sheath 7 and an outer sheath 8.

[0025] Figure 2 This is a structural example diagram of a wire core assembly skeleton of a flexible high temperature resistant composite cable according to an embodiment of the utility model. Figure 2 As shown, a first assembly cavity 22 is arranged inside the skeleton body 21 of the wire core assembly skeleton 2 of the present embodiment, a plurality of arc-shaped protrusions 23 integrally connected to the skeleton body 21 are arranged on the outer circumference of the skeleton body 21, and a plurality of second assembly cavities 24 with elliptical cross-sections are arranged one by one in the arc-shaped protrusions 23. The wire core assembly skeleton 2 of the present utility model is made of organic materials with high temperature resistance. The wire core assembly skeleton 2 in the present embodiment is made of silicone rubber or ceramic silicone rubber material. When implementing the flexible high temperature resistant composite cable of the present utility model, those skilled in the art can select other suitable materials to prepare the wire core assembly skeleton 2 according to the actual application scenario, and the present embodiment does not limit this.

[0026] It should be noted that the long axis of the elliptical cross section of the second assembly cavity 24 provided in the arc-shaped protrusion 23 of the wire core assembly skeleton 2 of this embodiment is colinear with the center of the first assembly cavity 22, and the short axis of the elliptical cross section of the second assembly cavity 24 is two-thirds of the long axis. The cross-sectional arrangement of the second assembly cavity 24 in this embodiment improves the pressure bearing capacity and bending capacity of the wire core assembly skeleton 2 while ensuring the stability of the skeleton body 21 of the wire core assembly skeleton 2, and provides a stable assembly space for the signal wire core pair 3.

[0027] like Figure 1 and Figure 2 As shown, the power cable core 1 is coaxially assembled in the first assembly cavity 22 of the core assembly skeleton 2, a plurality of signal core pairs 3 are arranged one by one in the second assembly cavity 24 of the core assembly skeleton 2, an isolation layer 5 is coated on the outside of the core assembly skeleton 2, a plurality of control cores 4 are arranged one by one in the gap formed by the isolation layer 5 and the adjacent arc-shaped protrusions 23 of the core assembly skeleton 2, an inner sheath 7 and an outer sheath 8 are coaxially arranged on the outside of the isolation layer 5, and a support ring 6 is arranged in the gap between the inner sheath 7 and the isolation layer 5. As an optional example, the outer sheath 8 of this embodiment is made of annealed copper material.

[0028] The isolation layer 5 of this embodiment is made of organic insulating materials with high temperature resistance, such as silicone rubber or low-smoke halogen-free flame-retardant polyolefin materials, and can also be made of tape materials with high temperature resistance, such as inorganic mineral non-combustible mica tape materials or glass fiber tape materials. When silicone rubber or low-smoke halogen-free flame-retardant polyolefin materials are used to prepare the isolation layer 5, the silicone rubber or low-smoke halogen-free flame-retardant polyolefin materials are coated on the outside of the wire core assembly skeleton 2 by melt extrusion. When inorganic mineral non-combustible mica tape materials or glass fiber tape materials are used to prepare the isolation layer 5, the inorganic mineral non-combustible mica tape materials or glass fiber tape materials are coated on the outside of the wire core assembly skeleton 2 by transverse overlapping wrapping.

[0029] The inner protective layer 7 of this embodiment is made of a tape material with high temperature resistance, such as an inorganic mineral non-combustible mica tape material or a glass fiber tape material. For example, the inorganic mineral non-combustible mica tape material or the glass fiber tape material is wrapped on the outside of the support ring 6 by transverse overlapping wrapping.

[0030] As an alternative example, Figure 2 As shown, a plurality of pressure-bearing fluid channels 25 are arranged on the circumference of the wire core assembly skeleton 2 of the present embodiment, and the pressure-bearing fluid channels 25 are arranged one by one on the skeleton body 21 between adjacent second assembly cavities 24. In the present embodiment, the pressure-bearing fluid channel 25 has a circular cross-section, and the center of the circular cross-section of the pressure-bearing fluid channel 25 is equidistant from the center of the elliptical cross-section of the adjacent second assembly cavity 24. The pressure-bearing fluid channel 25 of the present embodiment is used to transport fluid medium, and the transported fluid medium includes liquid cooling medium, gas cooling medium or other fluid medium, such as inert gas. In practical applications, liquid cooling medium or gas cooling medium can be used to reduce the temperature of the flexible high-temperature resistant composite cable of the present embodiment during service operation, thereby improving the overall current carrying capacity. Inert gas can be used to provide gas medium transportation to the line terminal, improve the degree of line integration and line utilization, and reduce line cost.

[0031] Figure 3 FIG. 1 is a structural example diagram of a power line core of a flexible high temperature resistant composite cable according to an embodiment of the utility model, as shown in FIG. Figure 3As shown, in this embodiment, the power line core 1 is composed of a power line core conductor 11 and a power line core first insulation layer 12 and a power line core second insulation layer 13 coated on the outside of the power line core conductor 11. The power line core conductor 11 of this embodiment is made of annealed copper material. For example, the power line core conductor 11 of this embodiment is made of a plurality of annealed copper wires twisted together. The power line core first insulation layer 12 of this embodiment is made of inorganic mineral non-combustible mica tape material. Specifically, in this embodiment, the power line core first insulation layer 12 is made by wrapping the inorganic mineral non-combustible mica tape transversely and overlappingly around the outside of the power line core conductor 11. The second insulation layer 13 of the power line core of the present embodiment is made of high-temperature resistant silicone rubber material or glass fiber tape material. It should be noted that when the high-temperature resistant silicone rubber material is used to prepare the second insulation layer 13 of the power line core, the high-temperature resistant silicone rubber is coated on the outside of the first insulation layer 12 of the power line core by melt extrusion. When the second insulation layer 13 of the power line core is prepared by glass fiber tape material, the glass fiber tape is transversely overlapped and wrapped around the outside of the first insulation layer 12 of the power line core.

[0032] Figure 4 FIG. 1 is a diagram showing a partial structure of a flexible high temperature resistant composite cable according to an embodiment of the utility model. Figure 4 As shown, the signal core pair 3 is made of a first signal core 31 and a second signal core 32 which are symmetrically spirally twisted, wherein the first signal core 31 is composed of a first signal transmission body 311 and a first signal core insulation layer 312 coated on the outside of the first signal transmission body 311, and the second signal core 32 is composed of a second signal transmission body 321 and a second signal core insulation layer 322 coated on the outside of the second signal transmission body 321.

[0033] As an optional example, in the signal core pair 3 of the flexible high temperature resistant composite cable of this embodiment, the first signal core 31 and the second signal core 32 can be configured differently. For example, the first signal transmission body 311 is made of metal materials such as copper alloy, and the first signal core insulation layer 312 outside the first signal transmission body 311 is made of high temperature resistant materials such as silicone rubber; the second signal transmission body 321 is made of optical fiber core bundle, and the second signal core insulation layer 322 outside the second signal transmission body 321 is made of high temperature resistant materials such as silicone rubber. It should be noted that, if Figure 1 , Figure 2 and Figure 4 As shown, the outer diameters of the first signal core 31 and the second signal core 32 are equal, and the sum of the outer diameters of the first signal core 31 and the second signal core 32 is equal to the major axis of the elliptical cross-section of the second assembly cavity 24 set in the arc-shaped protrusion 23 of the core assembly skeleton 2.

[0034] As another optional example, the first signal core 31 and the second signal core 32 of this embodiment may also adopt the same configuration. When the first signal core 31 and the second signal core 32 adopt the same configuration, the specific transmission body material and the signal core insulation layer material are selected according to the actual application scenario.

[0035] like Figure 4 As shown, the control core 4 is composed of a control core conductor 41 and a control core insulation layer 42 coated on the outside of the control core conductor 41. As an optional example, the control core conductor 41 of the control core 4 of this embodiment is made of annealed copper material, and the control core insulation layer 42 is made of organic insulation material with high temperature resistance, such as silicone rubber, cross-linked polyolefin and the like.

[0036] Figure 5 FIG. 1 is a structural example diagram of a support ring of a flexible high temperature resistant composite cable according to an embodiment of the utility model, as shown in FIG. Figure 5 As shown, in this embodiment, the cross-section of the support ring 6 as a whole is composed of a plurality of peak sections 61 and a plurality of trough sections 62, the peak section 61 and the trough section 62 are adjacently arranged and integrally connected, and the height of the peak section 61 is equal to the depth of the trough section 62. The support ring 6 of this embodiment is made of metal materials such as stainless steel or copper alloy. It should be noted that the support ring 6 of this embodiment can be made of seamless stainless steel or copper alloy pipes through forming processing, that is, the seamless metal pipe is formed into a support ring 6 having the above-mentioned peak section 61 and trough section 62; it can also be made by longitudinal welding of metal strips that have been formed, that is, the stainless steel or copper alloy strips are first formed into strips having the above-mentioned peak section 61 and trough section 62, and then the formed metal strips are longitudinally welded to obtain the support ring 6.

[0037] It should be noted that if Figure 1 , Figure 2 and Figure 5 As shown, the apex of the wave crest section 61 of the cross section of the support ring 6 is collinear with the center of the control wire core 4 and the center of the first assembly cavity 22 arranged on the inner side of the skeleton body 21 of the wire core assembly skeleton 2, and the apex of the wave trough section 62 of the cross section of the support ring 6 is collinear with the major axis of the elliptical cross section of the second assembly cavity 24 arranged in the arc-shaped protrusion 23 of the wire core assembly skeleton 2 and the center of the first assembly cavity 22.

[0038] In this embodiment, the support ring 6 mentioned above is arranged between the isolation layer 5 and the inner protective layer 7. When subjected to pressure, the peak height of the peak section 61 and the depth of the trough section 62 at the compressed position are compressed, and at the same time the widths of the peak section 61 and the trough section 62 increase. The gap formed by the support ring 6 between the isolation layer 5 and the inner protective layer 7 provides bending and deformation space for itself and the flexible high-temperature resistant composite cable as a whole, while firmly supporting the inner protective layer 7, significantly improving the overall bending ability and vibration resistance of the flexible high-temperature resistant composite cable.

[0039] It should be noted that, in addition to improving the overall bending performance and vibration resistance, the support ring 6 of the present embodiment can also significantly improve the anti-electromagnetic interference capability of the flexible high-temperature resistant composite cable. The overall setting of the peak section 61 and the trough section 62 can effectively reflect external electromagnetic interference signals to avoid adverse effects of external electromagnetic signals on internal transmission. At the same time, the overall setting of the peak section 61 and the trough section 62 can also prevent internal transmission components from causing electromagnetic interference to the outside world during energy and signal transmission.

[0040] The flexible high-temperature resistant composite cable of the utility model improves the high-temperature resistant current carrying capacity, the bending performance and the anti-vibration ability, and the anti-electromagnetic interference ability while integrating energy transmission, signal transmission and control transmission through comprehensive structural design and material selection.

[0041] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A flexible high temperature resistant composite cable, characterized in that: The flexible high-temperature resistant composite cable includes a power cable core, a core assembly skeleton, multiple signal core pairs, multiple control cores, an isolation layer, a support ring, an inner sheath and an outer sheath. A first assembly cavity is arranged on the inner side of a skeleton body of the core assembly skeleton, multiple arc-shaped protrusions integrally connected to the skeleton body are arranged on the outer circumference of the skeleton body, and multiple second assembly cavities with elliptical cross-sections are arranged one-to-one in the arc-shaped protrusions. The power cable core is coaxially assembled in the first assembly cavity of the core assembly skeleton, and multiple signal core pairs are arranged one-to-one in the second assembly cavity of the core assembly skeleton. The isolation layer is coated on the outer side of the core assembly skeleton, and multiple control cores are assembled one-to-one in the gap formed by the isolation layer and adjacent arc-shaped protrusions of the core assembly skeleton. The inner sheath and the outer sheath are coaxially arranged on the outer side of the isolation layer, and the support ring is arranged in the gap between the inner sheath and the isolation layer.

2. The flexible high temperature resistant composite cable according to claim 1, characterized in that: The major axis of the elliptical cross section of the second assembly cavity arranged in the arc-shaped protrusion of the wire core assembly skeleton is colinear with the center of the first assembly cavity, and the minor axis of the elliptical cross section of the second assembly cavity is two-thirds of the major axis.

3. The flexible high temperature resistant composite cable according to claim 1, characterized in that: A plurality of pressure-bearing fluid channels are arranged on the circumference of the wire core assembly skeleton, and the pressure-bearing fluid channels are arranged one by one on the skeleton body between adjacent second assembly cavities.

4. The flexible high temperature resistant composite cable according to claim 3, characterized in that: The pressure-bearing fluid channel has a circular cross section, and the center of the circular cross section of the pressure-bearing fluid channel is equidistant from the center of the elliptical cross section of the adjacent second assembly cavity.

5. The flexible high temperature resistant composite cable according to claim 1, characterized in that: The power line core is composed of a power line core conductor and a first power line core insulation layer and a second power line core insulation layer which are coated on the outside of the power line core conductor.

6. The flexible high temperature resistant composite cable according to claim 1, characterized in that: The signal wire core pair is made by symmetrically spirally twisting a first signal wire core and a second signal wire core. The outer diameters of the first signal wire core and the second signal wire core are equal. The sum of the outer diameters of the first signal wire core and the second signal wire core is equal to the major axis of the elliptical cross-section of the second assembly cavity arranged in the arc-shaped protrusion of the wire core assembly skeleton.

7. The flexible high temperature resistant composite cable according to claim 6, characterized in that: The first signal core is composed of a first signal transmission body and a first signal core insulation layer wrapped around the first signal transmission body, and the second signal core is composed of a second signal transmission body and a second signal core insulation layer wrapped around the second signal transmission body.

8. The flexible high temperature resistant composite cable according to claim 1, characterized in that: The control line core is composed of a control line core conductor and a control line core insulation layer coated on the outside of the control line core conductor.

9. The flexible high temperature resistant composite cable according to claim 1, characterized in that: The cross section of the support ring as a whole is composed of a plurality of wave crest sections and a plurality of wave trough sections, the wave crest sections and the wave trough sections are arranged adjacent to each other and connected as a whole, and the height of the wave crest sections is equal to the depth of the wave trough sections.

10. The flexible high temperature resistant composite cable according to claim 9, characterized in that: The apex of the wave peak section of the cross section of the support ring is collinear with the center of the control wire core and the center of the first assembly cavity arranged inside the skeleton body of the wire core assembly skeleton, and the apex of the wave valley section of the cross section of the support ring is collinear with the major axis of the elliptical cross section of the second assembly cavity arranged in the arc-shaped protrusion of the wire core assembly skeleton and the center of the first assembly cavity.

Images