High-temperature-resistant cable assembly

Abstract

The utility model relates to the technical field of cables, and provides a high-temperature-resistant cable assembly, which comprises an inner conductor ring, an inner conductor insulating layer, an inner conductor protective layer, a plurality of control wire cores, an isolating layer, an outer conductor ring, an outer conductor insulating layer and a protective layer, and is characterized in that the inner conductor insulating layer, the inner conductor protective layer and the isolating layer are sequentially and coaxially coated on the outer side of the inner conductor ring from inside to outside; the inner conductor protection layer is composed of a protection layer body and a plurality of protection layer protruding parts which are circumferentially distributed on the outer side of the protection layer body and integrally connected with the protection layer body, and the plurality of control wire cores are arranged in gaps between the adjacent protection layer protruding parts of the inner conductor protection layer and the inner side of the isolation layer in a one-to-one correspondence mode. And the outer conductor ring, the outer conductor insulating layer and the protective layer are coaxially arranged on the outer side of the isolating layer in sequence from inside to outside. According to the high-temperature-resistant cable assembly, the conductor transmission area and the conductor tightness can be improved, the line utilization rate and the overall compression resistance of the cable assembly can be improved, and the high-temperature-resistant performance and the overall flexibility of the cable can be improved.

Description

Technical Field

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

[0002] Cables are important components for power transmission in distribution networks and are widely used in various important fields such as petrochemicals, rail transit, building electrical, industrial production, and offshore development. With the increasing complexity of application scenarios in various application fields, the comprehensive performance requirements of cables at the application end are also constantly developing and improving. Among them, improving the safety performance of cables and reducing the cost of line laying are the core contents of current cable development. In practical applications, the safety performance of cables is comprehensively determined by multiple indicators including mechanical and physical properties, corrosion resistance, and current carrying performance, while high temperature resistance is the most critical indicator that determines whether cables can be safely used in important fields. Especially for cables used in extreme environments, continuously improving their high temperature resistance is the core direction of research in the field. On the other hand, with the increasing complexity and integration of application scenarios, it is required to increase line utilization as much as possible, reduce line laying costs, and improve line integration.

[0003] Therefore, how to provide a safer high-temperature resistant cable with high line utilization rate has become 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 high temperature resistant cable assembly.

[0005] The utility model provides a high-temperature resistant cable assembly, which comprises an inner conductor ring, an inner conductor insulating layer, an inner conductor sheath, a plurality of control cores, an isolation layer, an outer conductor ring, an outer conductor insulating layer and a sheath, wherein the inner conductor insulating layer, the inner conductor sheath and the isolation layer are coaxially coated on the outer side of the inner conductor ring in sequence from the inside to the outside, the inner conductor sheath is composed of a sheath body and a plurality of sheath protrusions which are circumferentially distributed on the outer side of the sheath body and are integrally connected with the sheath body, a plurality of control cores are arranged in a one-to-one correspondence in the gaps between adjacent sheath protrusions of the inner conductor sheath and the inner side of the isolation layer, and the outer conductor ring, the outer conductor insulating layer and the sheath are coaxially arranged on the outer side of the isolation layer in sequence from the inside to the outside.

[0006] Preferably, in the high-temperature resistant cable assembly of the utility model, the inner conductor ring is composed of a plurality of inner conductors with an overall Z-shaped cross-section twisted together in a circular manner, the outer side surface of the inner conductor is an arc surface convex outward, the outer side surfaces of the plurality of inner conductors form an outer circumferential surface after circumferential twisting, the inner side surface of the inner conductor is an arc surface concave outward, the inner side surfaces of the plurality of inner conductors are an arc surface concave inward, and the inner side surfaces of the plurality of inner conductors form a completed inner circumferential surface after circumferential twisting.

[0007] Preferably, in the high temperature resistant cable assembly of the utility model, the cross section of the sheath body of the inner conductor sheath is annular as a whole, and the outer end surface of the sheath protrusion is a curved surface.

[0008] Preferably, in the high temperature resistant cable assembly of the utility model, elastic channels are arranged one by one in the sheath protrusions, the cross section of the elastic channel is elliptical as a whole, and the major axis of the elliptical cross section of the elastic channel is colinear with the center of the inner conductor sheath.

[0009] Preferably, in the high temperature resistant cable assembly of the utility model, the control core is composed of a control core conductor and a control core insulation layer coaxially coated on the outside of the control core conductor, the control core conductor is made of copper alloy material, and the control core insulation layer is made of inorganic mineral insulating material.

[0010] Preferably, in the high-temperature resistant cable assembly of the utility model, the outer conductor ring is composed of a plurality of outer conductors whose overall cross-section is in an inverted Z-shape, which are twisted circumferentially. The outer side surface of the outer conductor is an arc surface convex outward, and the outer side surfaces of the plurality of outer conductors form an outer circumferential surface after being twisted circumferentially. The inner side surface of the outer inner conductor is an arc surface concave outward, and the inner side surfaces of the plurality of outer conductors are arc surfaces concave inward, and the inner side surfaces of the plurality of outer conductors form a completed inner circumferential surface after being twisted circumferentially.

[0011] Preferably, in the high temperature resistant cable assembly of the utility model, the inner conductor of the inner conductor ring and the outer conductor of the outer conductor ring are made of copper or copper alloy conductive material.

[0012] Preferably, in the high temperature resistant cable assembly of the utility model, the inner conductor insulation layer is made by coating with an inorganic mineral mica tape material, and the outer conductor insulation layer is made by coating with an inorganic mineral mica tape material.

[0013] Preferably, in the high temperature resistant cable assembly of the utility model, the inner conductor sheath is made of silicone rubber material or low-smoke halogen-free flame-retardant polyolefin material.

[0014] Preferably, in the high temperature resistant cable assembly of the utility model, the isolation layer is made of inorganic glass fiber material, and the protective layer is made of low-smoke halogen-free flame-retardant polyolefin material or copper alloy material.

[0015] The high temperature resistant cable assembly provided by the utility model improves the tightness of the conductor while increasing the conductor transmission area through the structural design of the inner conductor ring and the outer conductor ring; realizes the stable integration of the control core through the structural design of the inner conductor sheath, improves the overall compression resistance of the cable assembly while improving the line utilization rate; and ensures the overall flexibility of the cable while improving the high temperature resistance of the cable through the material selection of each component. 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 It is a structural schematic diagram of a high temperature resistant cable assembly according to an embodiment of the utility model;

[0018] Figure 2 It is a partial structural schematic diagram of a high temperature resistant cable assembly according to an embodiment of the utility model;

[0019] In the figure, 1-inner conductor ring, 11-inner conductor, 2-inner conductor insulation layer, 3-inner conductor sheath, 31-sheath body, 32-sheath protrusion, 33-elastic channel, 4-control core, 41-control core conductor, 42-control core insulation layer, 5-isolation layer, 6-outer conductor ring, 61-outer conductor, 7-outer conductor insulation layer, 8-sheath. DETAILED DESCRIPTION

[0020] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0021] Figure 1 The figure is a schematic structural diagram of a high temperature resistant cable assembly according to an embodiment of the utility model. Figure 2 The figure is a partial structural schematic diagram of a high temperature resistant cable assembly according to an embodiment of the utility model.

[0022] like Figure 1 and Figure 2 As shown, the high temperature resistant cable assembly of this embodiment includes an inner conductor ring 1, an inner conductor insulation layer 2, an inner conductor sheath 3, a plurality of control cores 4, an isolation layer 5, an outer conductor ring 6, an outer conductor insulation layer 7 and a sheath 8. The inner conductor insulation layer 2, the inner conductor sheath 3 and the isolation layer 5 are coaxially coated on the outer side of the inner conductor ring 1 from the inside to the outside, and the inner conductor sheath 3 is composed of a sheath body 31 and a plurality of sheath protrusions 32 circumferentially distributed on the outer side of the sheath body 31 and integrally connected with the sheath body 31. The plurality of control cores 4 are arranged one by one in the gap between the adjacent sheath protrusions 32 of the inner conductor sheath 3 and the inner side of the isolation layer 5, and the outer conductor ring 6, the outer conductor insulation layer 7 and the sheath 8 are coaxially arranged on the outer side of the isolation layer 5 from the inside to the outside.

[0023] As an optional example, in the high temperature resistant cable assembly of the present embodiment, the inner conductor ring 1 is composed of a plurality of inner conductors 11 with an overall Z-shaped cross section twisted circumferentially, the outer side surface of the inner conductor 11 is an arc surface convex outward, and the outer side surfaces of the plurality of inner conductors 11 form an outer circumferential surface after circumferential twisting, the inner side surface of the inner conductor 11 is an arc surface concave outward, the inner side surfaces of the plurality of inner conductors 11 are arc surfaces concave inward, and the inner side surfaces of the plurality of inner conductors 11 form a completed inner circumferential surface after circumferential twisting. In the high temperature resistant cable assembly of the present embodiment, the structural design of the inner conductor ring 1 can improve the tightness of the conductor while increasing the conductor transmission area.

[0024] As an optional example, in the high temperature resistant cable assembly of this embodiment, the cross section of the sheath body 31 of the inner conductor sheath 3 is annular as a whole, and the outer end surface of the sheath protrusion 32 is a curved surface. In practical applications, the setting of the sheath protrusion 32 can make the inner conductor sheath 3 have excellent pressure resistance while providing a stable setting space for the control core 4. The high temperature resistant cable assembly of this embodiment realizes the stable integration of the control core 4, improves the overall pressure resistance of the cable assembly while improving the line utilization rate.

[0025] As an optional example, in the high temperature resistant cable assembly of the present embodiment, an elastic channel 33 is arranged one by one in the sheath protrusion 32, and the cross section of the elastic channel 33 is elliptical as a whole, and the major axis of the elliptical cross section of the elastic channel 33 is colinear with the center of the inner conductor sheath 3. The elastic channel 33 of the inner conductor sheath 3 can further improve the compressive resistance of the inner conductor sheath 3. It should be noted that the elastic channel 33 in the high temperature resistant cable assembly of the present embodiment is also used to transmit fluid medium. The fluid medium transmitted in the present embodiment is used to cool the high temperature resistant cable assembly. The transmission fluid medium can be a gas cooling medium or a liquid cooling medium. In practical applications, in the high temperature resistant cable assembly of the present embodiment, the cross section of the elastic channel 33 can also be other shapes, such as a circle or a polygon, etc. When implementing the high temperature resistant cable assembly of the present embodiment, those skilled in the art can select a suitable cross-sectional shape according to the specific application scenario.

[0026] As an optional example, in the high temperature resistant cable assembly of this embodiment, the control core 4 is composed of a control core conductor 41 and a control core insulation layer 42 coaxially wrapped around the outside of the control core conductor 41 .

[0027] As an optional example, in the high temperature resistant cable assembly of the present embodiment, the outer conductor ring 6 is composed of a plurality of outer conductors 61 with an overall inverted Z-shaped cross section twisted circumferentially, the outer side surface of the outer conductor 61 is an arc surface convex outward, and the outer side surfaces of the plurality of outer conductors 61 form an outer circumferential surface after circumferential twisting, the inner side surface of the outer conductor 61 is an arc surface concave outward, the inner side surfaces of the plurality of outer conductors 61 are arc surfaces concave inward, and the inner side surfaces of the plurality of outer conductors 61 form a completed inner circumferential surface after circumferential twisting. In the high temperature resistant cable assembly of the present embodiment, the outer conductor ring 6 has an opposite conductor twisting direction to the inner conductor ring 1, which further improves the sealing performance of the components inside the outer conductor ring 6.

[0028] In the high temperature resistant cable assembly of this embodiment, the inner conductor 11 of the inner conductor ring 1 and the outer conductor 61 of the outer conductor ring 6 are made of copper or copper alloy conductive materials. The inner conductor insulation layer 2 is made of inorganic mineral mica tape material, the inner conductor sheath 3 is made of silicone rubber material or low-smoke halogen-free flame-retardant polyolefin material, the control core conductor 41 is made of copper alloy material, the control core insulation layer 42 is made of inorganic mineral insulation material, the isolation layer 5 is made of inorganic glass fiber material, the outer conductor insulation layer 7 is made of inorganic mineral mica tape material, and the sheath 8 is made of low-smoke halogen-free flame-retardant polyolefin material or copper alloy material. In the high temperature resistant cable assembly of this embodiment, the material selection of each component improves the high temperature resistance of the cable while ensuring the overall flexibility of the cable.

[0029] The high temperature resistant cable assembly provided by the utility model improves the tightness of the conductor while increasing the conductor transmission area through the structural design of the inner conductor ring 1 and the outer conductor ring 6; the stable integration of the control core 4 is achieved through the structural design of the inner conductor sheath 3, and the overall compression resistance of the cable assembly is improved while the line utilization rate is improved; and the overall flexibility of the cable is guaranteed while the high temperature resistance of the cable is improved through the material selection of each component.

[0030] 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 high temperature resistant cable assembly, characterized in that: The high temperature resistant cable assembly comprises an inner conductor ring, an inner conductor insulation layer, an inner conductor sheath, a plurality of control cores, an isolation layer, an outer conductor ring, an outer conductor insulation layer and a sheath. The inner conductor insulation layer, the inner conductor sheath and the isolation layer are coaxially coated on the outer side of the inner conductor ring in sequence from the inside to the outside. The inner conductor sheath consists of a sheath body and a plurality of sheath protrusions which are circumferentially distributed on the outer side of the sheath body and are integrally connected to the sheath body. The plurality of control cores are arranged one by one in the gap between adjacent sheath protrusions of the inner conductor sheath and the inner side of the isolation layer. The outer conductor ring, the outer conductor insulation layer and the sheath are coaxially arranged on the outer side of the isolation layer in sequence from the inside to the outside.

2. The high temperature resistant cable assembly according to claim 1, characterized in that: The inner conductor ring is composed of a plurality of inner conductors with an overall Z-shaped cross-section twisted circumferentially, the outer side surface of the inner conductor is an arc surface convex outwardly, and the outer side surfaces of the plurality of inner conductors form an outer circumferential surface after being twisted circumferentially, the inner side surface of the inner conductor is an arc surface concave outwardly, the inner side surfaces of the plurality of inner conductors are an arc surface concave inwardly, and the inner side surfaces of the plurality of inner conductors form a completed inner circumferential surface after being twisted circumferentially.

3. The high temperature resistant cable assembly according to claim 1, characterized in that: The cross section of the sheath body of the inner conductor sheath is annular as a whole, and the outer end surface of the sheath protrusion is a curved surface.

4. The high temperature resistant cable assembly according to claim 1, characterized in that: Elastic channels are arranged one by one in the sheath protrusions. The cross-section of the elastic channel is elliptical as a whole. The major axis of the elliptical cross-section of the elastic channel is colinear with the center of the inner conductor sheath.

5. The high temperature resistant cable assembly according to claim 1, characterized in that: The control core consists of a control core conductor and a control core insulation layer coaxially coated on the outside of the control core conductor. The control core conductor is made of copper alloy material, and the control core insulation layer is made of inorganic mineral insulation material.

6. The high temperature resistant cable assembly according to claim 1, characterized in that: The outer conductor ring is composed of a plurality of outer conductors with an overall inverted Z-shaped cross-section, which are twisted circumferentially. The outer side surface of the outer conductor is an arc surface convex outwardly. The outer side surfaces of the plurality of outer conductors form an outer circumferential surface after being twisted circumferentially. The inner side surface of the outer inner conductor is an arc surface concave outwardly. The inner side surfaces of the plurality of outer conductors are an arc surface concave inwardly. The inner side surfaces of the plurality of outer conductors form a completed inner circumferential surface after being twisted circumferentially.

7. The high temperature resistant cable assembly according to claim 1, characterized in that: The inner conductor of the inner conductor ring and the outer conductor of the outer conductor ring are made of copper or copper alloy conductive material.

8. The high temperature resistant cable assembly according to claim 1, characterized in that: The inner conductor insulation layer is made by coating with an inorganic mineral mica tape material, and the outer conductor insulation layer is made by coating with an inorganic mineral mica tape material.

9. The high temperature resistant cable assembly according to claim 1, characterized in that: The inner conductor sheath is made of silicone rubber material or low-smoke halogen-free flame-retardant polyolefin material.

10. The high temperature resistant cable assembly according to claim 1, characterized in that: The isolation layer is made of inorganic glass fiber material, and the protective layer is made of low-smoke halogen-free flame-retardant polyolefin material or copper alloy material.

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