Inorganic fireproof cable

Abstract

The utility model relates to the technical field of fireproof cables, and provides an inorganic fireproof cable, which comprises inorganic fireproof power wire cores, a wire core framework, inorganic fireproof signal wire cores, inorganic fireproof control wire cores, an isolating layer, an inner protective layer and an outer protective layer, the multiple signal wire core grooves are circumferentially and evenly distributed on the inner side of the framework body, the inorganic fireproof power wire cores are coaxially arranged on the inner side of the wire core framework, the multiple inorganic fireproof signal wire cores are arranged in the signal wire core grooves in the inner side of the wire core framework in a one-to-one correspondence mode, and the isolation layer, the inner protection layer and the outer protection layer are sequentially arranged on the outer side of the wire core framework from inside to outside. And a plurality of inorganic fireproof control wire cores are circumferentially and uniformly arranged in a gap between the isolating layer and the wire core framework. According to the inorganic fireproof cable, the overall safety performance and the installation and laying performance of the cable can be improved, the line integration level is improved, and the line cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof cables, in particular to an inorganic fireproof cable. Background Art

[0002] Wires and cables are components used to transmit energy and signals. They are widely used in various fields such as petrochemicals, building electrical, scientific experiments, industrial production, etc. They are regarded as the blood vessels and nerves of contemporary society. With the continuous expansion of human exploration and the deepening of exploration, the requirements for the comprehensive performance of wires and cables are also increasing in the evolving application end. Improving line safety performance, improving line integration, and reducing line resource occupancy and costs are important contents of research in the field and are also the core direction of the development of wires and cables.

[0003] In actual research and development and manufacturing, improving line safety performance and improving line integration are usually a pair of contradictory indicators. In order to improve the safety performance of wires and cables, complex structural design and a large amount of material application are required, which inevitably leads to an increase in the overall structural size of the cable and occupies a large amount of line laying resources. In addition, due to the complex structural design, wires and cables cannot be used in small installation spaces and cannot meet the application needs of important fields for wires and cables with high temperature resistance and fire resistance.

[0004] Therefore, how to provide an inorganic fire-proof cable that can improve the safety performance and installation and laying performance of the cable while increasing line integration and reducing line costs is an urgent problem to be solved. Utility Model Content

[0005] In view of this, in order to overcome the deficiencies of the prior art, the utility model aims to provide an inorganic fireproof cable.

[0006] The utility model provides an inorganic fireproof cable, characterized in that the inorganic fireproof cable comprises an inorganic fireproof power core, a core skeleton, an inorganic fireproof signal core, an inorganic fireproof control core, an isolation layer, an inner sheath and an outer sheath, the skeleton body of the core skeleton is annular as a whole, a plurality of signal core grooves are evenly distributed on the inner side of the skeleton body, the inorganic fireproof power core is coaxially arranged on the inner side of the core skeleton, a plurality of inorganic fireproof signal cores are arranged one by one in the signal core grooves on the inner side of the core skeleton, the isolation layer, the inner sheath and the outer sheath are arranged in sequence on the outer side of the core skeleton from the inside to the outside, and a plurality of inorganic fireproof control cores are evenly arranged on the circumference in the gap between the isolation layer and the core skeleton.

[0007] Preferably, in the inorganic fire-proof cable of the present invention, a plurality of control wire core grooves are evenly arranged on the outer circumference of the skeleton body of the wire core skeleton, and a plurality of inorganic fire-proof control wire cores are arranged in the control wire core grooves one by one, wherein in the circumferential direction, the control wire core groove is arranged between two adjacent signal wire core grooves, and the groove surface of the control wire core groove is an arc surface.

[0008] Preferably, in the inorganic fire-proof cable of the present invention, a plurality of conveying channels are arranged on the skeleton body of the wire core skeleton, and the conveying channels are evenly distributed on the skeleton body.

[0009] Preferably, in the inorganic fireproof cable of the utility model, the wire core skeleton is made of magnesium oxide insulating ceramic or aluminum oxide insulating ceramic material.

[0010] Preferably, in the inorganic fire-proof cable of the utility model, the inorganic fire-proof power core is composed of a power conductor and an inorganic fire-proof power core insulation layer coated on the outside of the power conductor, wherein the power conductor is made of a plurality of circular cross-section wires twisted together, the material of the wires is copper or copper alloy, and the inorganic fire-proof power core insulation layer is made of inorganic mineral mica tapes that are laterally overlapped and coated.

[0011] Preferably, in the inorganic fire-proof cable of the utility model, the inorganic fire-proof signal core is composed of a signal conductor and an inorganic fire-proof signal core insulation layer coated on the outside of the signal conductor, wherein the signal conductor is made of copper material or copper alloy material or nickel alloy material, and the inorganic fire-proof signal core insulation layer is made of inorganic mineral mica tapes that are laterally overlapped.

[0012] Preferably, in the inorganic fire-proof cable of the present invention, the inorganic fire-proof control core is composed of a control conductor and an inorganic fire-proof control core insulation layer coated on the outside of the control conductor, wherein the control conductor is made of a plurality of circular cross-section wires twisted together, the material of the wires is copper or copper alloy, and the inorganic fire-proof control core insulation layer is made of inorganic mineral mica tapes that are laterally overlapped and coated.

[0013] Preferably, in the inorganic fireproof cable of the utility model, the isolation layer is made by lateral overlapping and coating of inorganic mineral mica tapes.

[0014] Preferably, in the inorganic fireproof cable of the utility model, the inner sheath is made of alkali-free glass fiber cloth wrapped in an overlapping manner.

[0015] Preferably, in the inorganic fireproof cable of the utility model, the outer sheath is made by longitudinally wrapping an annealed copper alloy strip and then welding it.

[0016] The inorganic fireproof cable of the utility model can improve the overall safety performance and installation and laying performance of the cable while improving the line integration and reducing the line cost through comprehensive structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 It is a structural schematic diagram of an inorganic fireproof cable according to an embodiment of the utility model;

[0019] Figure 2 The figure is a partial structural schematic diagram of an inorganic fireproof cable according to an embodiment of the utility model.

[0020] In the figure, 1-inorganic fireproof power core, 2-core skeleton, 3-inorganic fireproof signal core, 4-inorganic fireproof control core, 5-isolating layer, 6-inner sheath, 7-outer sheath, 11-power conductor, 12-inorganic fireproof power core insulation layer, 21-skeleton body, 22-signal core groove, 23-control core groove, 24-transmission channel, 31-signal conductor, 32-inorganic fireproof signal core insulation layer, 41-control conductor, 42-inorganic fireproof control core insulation layer. DETAILED DESCRIPTION

[0021] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0022] Figure 1 The figure is a schematic structural diagram of an inorganic fireproof cable according to an embodiment of the utility model. Figure 2 The figure is a partial structural schematic diagram of an inorganic fireproof cable according to an embodiment of the utility model.

[0023] like Figure 1 and Figure 2 As shown, the inorganic fireproof cable of this embodiment includes an inorganic fireproof power core 1, a core skeleton 2, an inorganic fireproof signal core 3, an inorganic fireproof control core 4, an isolation layer 5, an inner sheath 6 and an outer sheath 7. The skeleton body 21 of the core skeleton 2 is annular as a whole, and a plurality of signal core grooves 22 are evenly distributed on the inner side of the skeleton body 21. The inorganic fireproof power core 1 is coaxially arranged on the inner side of the core skeleton 2, and a plurality of inorganic fireproof signal cores 3 are arranged one by one in the signal core grooves 22 on the inner side of the core skeleton 2. The isolation layer 5, the inner sheath 6 and the outer sheath 7 are arranged in sequence on the outer side of the core skeleton 2 from the inside to the outside, and a plurality of inorganic fireproof control cores 4 are evenly arranged in the gap between the isolation layer 5 and the core skeleton 2.

[0024] As an optional example, in the inorganic fireproof cable of this embodiment, a plurality of control wire core grooves 23 are evenly arranged on the outer circumference of the skeleton body 21 of the wire core skeleton 2, and a plurality of inorganic fireproof control wire cores 4 are arranged in the control wire core grooves 23 one by one. It should be noted that in the inorganic fireproof cable of this embodiment, in the circumferential direction, the control wire core groove 23 is arranged between two adjacent signal wire core grooves 22. For example, in the inorganic fireproof cable of this embodiment, the groove surface of the control wire core groove 23 is an arc surface.

[0025] As an optional example, in the inorganic fire resistant cable of the present embodiment, a plurality of conveying channels 24 are provided on the skeleton body 21 of the wire core skeleton 2, and the conveying channels 24 are evenly distributed on the skeleton body 21. For example, in the inorganic fire resistant cable of the present embodiment, the cross-sectional shape of the conveying channel 24 is an ellipse, and the short axis of the elliptical cross-section of the conveying channel 24 is colinear with the center of the circle of the wire core skeleton 2. In practical applications, in the inorganic fire resistant cable of the present embodiment, the cross-sectional shape of the conveying channel 24 can also be other shapes, such as a circle or a polygon, etc. When implementing the inorganic fire resistant cable of the present embodiment, those skilled in the art can select a suitable cross-sectional shape according to the specific application scenario, and the present embodiment does not impose any restrictions on this. The conveying channel 24 of the present embodiment is used to convey a cooling medium. In extreme application scenarios, the cooling medium in the conveying channel 24 can take away the heat of the inorganic fire resistant cable during operation, thereby significantly improving the overall current carrying capacity and safety capability of the cable.

[0026] In the inorganic fireproof cable of this embodiment, the wire core skeleton 2 is made of inorganic insulating ceramic material. For example, the wire core skeleton 2 can be made of magnesium oxide insulating ceramic, aluminum oxide insulating ceramic, etc. The setting of the wire core skeleton 2 can ensure the stability of the overall structure of the cable while realizing the integration of power transmission, signal transmission and power control. The wire core skeleton 2 is made of insulating ceramic material, which can ensure effective and safe isolation between each wire core.

[0027] As an optional example, in the inorganic fire-proof cable of this embodiment, the inorganic fire-proof power core 1 is composed of a power conductor 11 and an inorganic fire-proof power core insulation layer 12 coated on the outside of the power conductor 11, wherein the power conductor 11 is made of a plurality of circular cross-section wires twisted together, the material of the wires is copper or copper alloy, and the inorganic fire-proof power core insulation layer 12 is made of inorganic mineral mica tapes that are laterally overlapped and coated.

[0028] As an optional example, in the inorganic fire-proof cable of this embodiment, the inorganic fire-proof signal core 3 is composed of a signal conductor 31 and an inorganic fire-proof signal core insulation layer 32 coated on the outside of the signal conductor 31, wherein, according to different application scenarios, the signal conductor 31 is made of copper material, copper alloy material or nickel alloy material, and the inorganic fire-proof signal core insulation layer 32 is made of inorganic mineral mica tape by lateral overlapping coating.

[0029] As an optional example, in the inorganic fire-proof cable of this embodiment, the inorganic fire-proof control core 4 is composed of a control conductor 41 and an inorganic fire-proof control core insulation layer 42 coated on the outside of the control conductor 41, wherein the control conductor 41 is made of a plurality of circular cross-section wires twisted together, the material of the wires is copper or copper alloy, and the inorganic fire-proof control core insulation layer 42 is made of inorganic mineral mica tapes that are laterally overlapped and coated.

[0030] As an optional example, in the inorganic fireproof cable of this embodiment, the isolation layer 5 is made of inorganic mineral mica tapes overlapped and coated horizontally; the inner sheath 6 is made of alkali-free glass fiber cloth overlapped and wrapped; the outer sheath 7 is made of annealed copper alloy tapes longitudinally coated and then welded. In the inorganic fireproof cable of this embodiment, through the material selection and structural design of each component, the safety performance of the inorganic fireproof cable is improved while ensuring the overall bending performance of the cable, and improving the installation and laying performance of the cable.

[0031] The inorganic fireproof cable provided by the utility model can improve the overall safety performance and installation and laying performance of the cable while improving the line integration and reducing the line cost through comprehensive structural design.

[0032] 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. An inorganic fireproof cable, characterized in that: The inorganic fireproof cable comprises an inorganic fireproof power core, a core skeleton, an inorganic fireproof signal core, an inorganic fireproof control core, an isolation layer, an inner sheath and an outer sheath. The skeleton body of the core skeleton is annular as a whole, and a plurality of signal core grooves are evenly distributed on the inner side of the skeleton body. The inorganic fireproof power core is coaxially arranged on the inner side of the core skeleton, and a plurality of inorganic fireproof signal cores are arranged one by one in the signal core grooves on the inner side of the core skeleton. The isolation layer, the inner sheath and the outer sheath are arranged in sequence on the outer side of the core skeleton from the inside to the outside, and a plurality of inorganic fireproof control cores are evenly arranged on the circumference in the gap between the isolation layer and the core skeleton.

2. The inorganic fireproof cable according to claim 1, characterized in that: A plurality of control wire core grooves are evenly arranged on the outer circumference of the skeleton body of the wire core skeleton, and a plurality of inorganic fire-proof control wire cores are arranged in the control wire core grooves one by one. In the circumferential direction, the control wire core groove is arranged between two adjacent signal wire core grooves, and the groove surface of the control wire core groove is an arc surface.

3. The inorganic fireproof cable according to claim 1, characterized in that: A plurality of conveying channels are arranged on the skeleton body of the wire core skeleton, and the conveying channels are evenly distributed on the skeleton body.

4. The inorganic fireproof cable according to claim 1, characterized in that: The wire core skeleton is made of magnesium oxide insulating ceramic or aluminum oxide insulating ceramic material.

5. The inorganic fireproof cable according to claim 1, characterized in that: The inorganic fireproof power line core is composed of a power conductor and an inorganic fireproof power line core insulation layer wrapped around the outside of the power conductor, wherein the power conductor is made by twisting together multiple circular cross-section wires, the material of the wires is copper or copper alloy, and the inorganic fireproof power line core insulation layer is made by transversely overlapping inorganic mineral mica tapes.

6. The inorganic fireproof cable according to claim 1, characterized in that: The inorganic fireproof signal wire core is composed of a signal conductor and an inorganic fireproof signal wire core insulation layer coated on the outside of the signal conductor, wherein the signal conductor is made of copper material or copper alloy material or nickel alloy material, and the inorganic fireproof signal wire core insulation layer is made of inorganic mineral mica tapes that are laterally overlapped and coated.

7. The inorganic fireproof cable according to claim 1, characterized in that: The inorganic fire-proof control wire core is composed of a control conductor and an inorganic fire-proof control wire core insulation layer coated on the outside of the control conductor, wherein the control conductor is made by twisting multiple circular cross-section wires, the material of the wires is copper or copper alloy, and the inorganic fire-proof control wire core insulation layer is made by transversely overlapping inorganic mineral mica tapes.

8. The inorganic fireproof cable according to claim 1, characterized in that: The isolation layer is made of inorganic mineral mica tapes that are overlapped laterally.

9. The inorganic fireproof cable according to claim 1, characterized in that: The inner sheath is made of overlapping and wrapping alkali-free glass fiber cloth.

10. The inorganic fireproof cable according to claim 1, characterized in that: The outer sheath is made of annealed copper alloy strips which are longitudinally coated and then welded.

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