High-temperature-resistant fireproof wire set

Abstract

The utility model relates to the technical field of fireproof cables, and provides a high-temperature-resistant fireproof wire group, which comprises a stable spacing support, two power wire cores, two control cables, two cooling pipelines, an isolation layer, an inner protection layer and an outer protection layer, and is characterized in that the whole cross section of the stable spacing support is Z-shaped, and the stable spacing support is composed of a first horizontal part, an inclined part and a second horizontal part; one end of the first horizontal part is integrally connected with the upper end of the inclined part, one end of the second horizontal part is integrally connected with the lower end of the inclined part, the isolation layer is arranged on the outer side of the stable interval, and the inner protection layer and the outer protection layer sequentially wrap the outer side of the isolation layer from inside to outside. According to the cable, the current-carrying capacity and the safe service performance can be improved, meanwhile, the multiple transmission assemblies are integrated in the same cable in a straight assembly mode, installation and laying resources are saved, and the material and process cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fireproof cable, and particularly relates to a high-temperature-resistant fireproof wire group. BACKGROUND

[0002] With the increasing requirements of modern society on the safety and reliability of power systems, fireproof cables are increasingly widely used due to their characteristics of maintaining normal power and signal transmission under extreme conditions such as fire. Fireproof cables are mainly used in places with high requirements on fireproof performance, such as buildings, subways, tunnels, ships and the like, to ensure stable transmission of power supply and control signals.

[0003] In the prior art, in order to improve the high-temperature resistance and fireproof performance of the fireproof cable, a complex structure design and material selection are usually required for the cable. Such a design often leads to a large increase in the rigidity of the cable. For example, in order to enhance the fireproof performance, the cable may need to be wrapped with multiple layers of flame-retardant materials, or a metal sheath with high rigidity is used. Such a complex structure makes it possible to combine only very small-sized cores together to form a multi-core cable. However, in actual applications, especially in occasions requiring integration of multiple functions, a multi-core cable is a more ideal choice. In addition, the combination of small-sized cores not only further increases the overall rigidity of the cable, but also increases the diameter and weight of the cable. The process of spiral cabling requires more materials, such as additional insulation layers, fillers and sheath materials, which not only increases the production cost, but also reduces the flexibility of the cable and increases the difficulty of laying. In the actual installation process, the cable with high rigidity is difficult to adapt to complex laying environments, such as small-radius pipes or narrow spaces, and requires additional support and fixing measures, increasing the installation workload and cost.

[0004] On the other hand, single-core fireproof cables have limitations in function and cannot meet the needs of integrated application lines. In many modern electrical systems, not only high-power power needs to be transmitted, but also control signals, communication signals and the like need to be transmitted at the same time. Single-core cables cannot integrate multiple functions, resulting in the need to lay multiple cables to meet different needs in actual applications. This not only wastes laying space, but also increases the installation workload and maintenance cost. For example, in the electrical system of a building, power cables, control cables and communication cables may need to be laid respectively, and multiple functions cannot be transmitted by an integrated cable. For example, the demand for power transmission and control transmission at the application end is increasingly urgent. In the fields of industrial automation, intelligent buildings, data centers and the like, synchronous transmission of power and control signals is the key to realizing efficient automatic control and stable operation of the system.

[0005] Therefore, developing a new type of fireproof cable that can meet the requirements of fireproof performance, realize multi-core integration, reduce rigidity, improve flexibility, and effectively save laying space and installation workload is an urgent problem to be solved in the current technical field. Utility model content

[0006] Therefore, in order to overcome the shortcomings of the prior art, the present application aims to provide a high-temperature-resistant fireproof wire group.

[0007] The present application provides a high-temperature-resistant fireproof wire group, which comprises a stable spacing support, two power line cores, two control cables, two cooling pipelines, an isolation layer, an inner protective layer and an outer protective layer. The cross section of the stable spacing support as a whole is Z-shaped, which is composed of a first horizontal part, an inclined part and a second horizontal part. One end of the first horizontal part is integrally connected with the upper end of the inclined part, and one end of the second horizontal part is integrally connected with the lower end of the inclined part. The isolation layer is arranged on the outer side between the stable spacing supports. The inner protective layer and the outer protective layer are sequentially wrapped on the outer side of the isolation layer from inside to outside.

[0008] Optionally, in the high-temperature-resistant fireproof wire group of the present application, the cross section of the first horizontal part as a whole is arc-shaped, the upper end surface of the first horizontal part is a circular arc surface, and the lower end surface of the first horizontal part is a plane. The cross section of the second horizontal part as a whole is arc-shaped, the upper end surface of the second horizontal part is a plane, and the lower end surface of the second horizontal part is a circular arc surface.

[0009] Optionally, in the high-temperature-resistant fireproof wire group of the present application, a first buffer channel is arranged on the first horizontal part, the cross section of the first buffer channel is elliptical, and the long axis of the ellipse is parallel to the lower end surface of the first horizontal part. A second buffer channel is arranged on the second horizontal part, the cross section of the second buffer channel is elliptical, and the long axis of the ellipse is parallel to the upper end surface of the second horizontal part.

[0010] Optionally, in the high-temperature-resistant fireproof wire group of the present application, the cross section of the isolation layer as a whole is circular ring-shaped, the upper end surface of the first horizontal part of the stable spacing support has the same radius of curvature as the isolation layer, and the lower end surface of the second horizontal part of the stable spacing support has the same radius of curvature as the isolation layer.

[0011] Optionally, in the high-temperature-resistant fireproof wire group of the present application, the power line cores are arranged one by one in the cavities between the stable spacing supports and the isolation layer.

[0012] Optionally, in the high-temperature-resistant fireproof wire group of the present application, one power line core is arranged in the cavity formed by the first horizontal part, the inclined part and the inner wall of the isolation layer of the stable spacing support, and the other power line core is arranged in the cavity formed by the second horizontal part, the inclined part and the inner wall of the isolation layer of the stable spacing support.

[0013] Optionally, in the high-temperature-resistant fireproof wire group, the power wire core comprises a power wire core conductor and a first power insulating layer, a second power insulating layer and a third power insulating layer which are sequentially wrapped outside the power wire core conductor from inside to outside.

[0014] Optionally, in the high-temperature-resistant fireproof wire group, the control cable is arranged in the cavity formed by the power wire core and the stable spacing support in a one-to-one correspondence, and the control cable comprises two control wire cores arranged in parallel and a control inner sheath and a control outer sheath which are sequentially wrapped outside the two control wire cores.

[0015] Optionally, in the high-temperature-resistant fireproof wire group, the control wire core comprises a control wire core conductor and a first control insulating layer and a second control insulating layer which are sequentially wrapped outside the control wire core conductor.

[0016] Optionally, in the high-temperature-resistant fireproof wire group, the cooling channel is arranged in the cavity formed by the power wire core, the stable spacing support and the isolation layer in a one-to-one correspondence.

[0017] The high-temperature-resistant fireproof wire group can integrate multiple transmission components in the same cable in a flat assembly manner, save installation and laying resources, and reduce material and process costs while improving the current-carrying capacity and safe service performance. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is a structural example diagram of a high-temperature-resistant fireproof wire group according to an embodiment of the present application;

[0020] Figure 2 is a structural example diagram of a stable spacing support according to an embodiment of the present application;

[0021] Figure 3 is a structural example diagram of a power wire core according to an embodiment of the present application;

[0022] Figure 4 is a structural example diagram of a control cable according to an embodiment of the present application;

[0023] In the figure, 1 - stable interval support, 2 - power line core, 3 - control cable, 4 - cooling pipeline, 5 - isolation layer, 6 - inner sheath, 7 - outer sheath, 11 - first horizontal part, 12 - inclined part, 13 - second horizontal part, 14 - first buffer channel, 15 - second buffer channel, 21 - power line core conductor, 22 - first power insulation layer, 23 - second power insulation layer, 24 - third power insulation layer, 31 - control line core, 32 - control inner sheath, 33 - control outer sheath, 311 - control line core conductor, 312 - first control insulation layer, 313 - second control insulation layer. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below with reference to the drawings.

[0025] It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict; and all other embodiments obtained by those skilled in the art based on the embodiments in the present disclosure without creative labor are within the scope of protection of the present disclosure.

[0026] It should be noted that the various aspects of the embodiments described below are within the scope of the appended claims. It should be apparent that the aspects described herein can be embodied in a wide variety of forms and that any specific structure and / or function described herein is merely illustrative. Based on the teachings herein one skilled in the art should appreciate that an aspect described herein can be implemented independently of any other aspects and that two or more aspects can be combined in various ways. For example, an apparatus can be implemented and / or a method practiced using any number of the aspects described herein. In addition, an apparatus can be implemented and / or a method practiced using other structure and / or functionality in addition to or other than one or more of the aspects described herein.

[0027] Figure 1 For a structure example diagram of a high-temperature-resistant fireproof wire group according to an embodiment of the present application, as shown in Figure 1 In the embodiment, the high-temperature-resistant fireproof wire group includes a stable interval support 1, two power line cores 2, two control cables 3, two cooling pipelines 4, an isolation layer 5, an inner sheath 6 and an outer sheath 7, and the inner sheath 6 and the outer sheath 7 are sequentially wrapped outside the isolation layer 5 from inside to outside.

[0028] Figure 2 For a structure example diagram of a stable interval support according to an embodiment of the present application, as shown in Figure 1 and Figure 2As shown, in the embodiment, the cross section of the stable spacing support 1 is in the shape of Z, which is composed of a first horizontal part 11, an inclined part 12 and a second horizontal part 13. One end of the first horizontal part 11 is integrally connected with the upper end of the inclined part 12, and one end of the second horizontal part 13 is integrally connected with the lower end of the inclined part 12.

[0029] As an optional example, in the embodiment, the cross section of the first horizontal part 11 is in the shape of an arc, the upper end surface of the first horizontal part 11 is a circular arc surface, and the lower end surface of the first horizontal part 11 is a flat surface. The cross section of the second horizontal part 13 is in the shape of an arc, the upper end surface of the second horizontal part 13 is a flat surface, and the lower end surface of the second horizontal part 13 is a circular arc surface. In the embodiment, the stable spacing support 1 can stabilize the overall structure of the high-temperature-resistant and fireproof cable group while separating the internal components, thereby realizing the integration of multiple transmission components in the same transmission line, saving the space for laying the line, and reducing the workload for installing the line.

[0030] As an optional example, in the embodiment, a first buffer channel 14 is arranged on the first horizontal part 11, the cross section of the first buffer channel 14 is in the shape of an ellipse, and the long axis of the ellipse is parallel to the lower end surface of the first horizontal part 11. A second buffer channel 15 is arranged on the second horizontal part 13, the cross section of the second buffer channel 15 is in the shape of an ellipse, and the long axis of the ellipse is parallel to the upper end surface of the second horizontal part 13. In the embodiment, the first buffer channel 14 and the second buffer channel 15.

[0031] In the embodiment, the isolation layer 5 is arranged outside the stable spacing support 1, the cross section of the isolation layer 5 is in the shape of a ring, the upper end surface of the first horizontal part 11 of the stable spacing support 1 has the same radius of curvature as the isolation layer 5, and the lower end surface of the second horizontal part 13 of the stable spacing support 1 has the same radius of curvature as the isolation layer 5. In actual application, the isolation layer 5 can be made of a temperature-resistant material with excellent mechanical and physical properties by extrusion molding, for example, made of silicone rubber material, which is not limited in the present application. In the embodiment, the inner protective layer 6 is made of a metal material, for example, made of annealed copper strip by roll forming and online welding. The outer protective layer 7 is made of a material with high temperature resistance and flame retardation by extrusion molding, for example, made of low-smoke halogen-free flame-retardant polyolefin material.

[0032] In the embodiment, the power line cores 2 are arranged one by one in the cavities between the stable spacing support 1 and the isolation layer 5. Specifically, one power line core 2 is arranged in the cavity formed by the first horizontal part 11, the inclined part 12 of the stable spacing support 1 and the inner wall of the isolation layer 5, and the other power line core 2 is arranged in the cavity formed by the second horizontal part 13, the inclined part 12 of the stable spacing support 1 and the inner wall of the isolation layer 5.

[0033] Figure 3As an optional example, as shown in Figure 1 、 Figure 2 and Figure 3 , in the embodiment, the power line core 2 includes a power line core conductor 21, a first power insulation layer 22, a second power insulation layer 23 and a third power insulation layer 24 which are sequentially wrapped outside the power line core conductor 21 from inside to outside. In the embodiment, the specific materials of the internal components of the power line core 2 can be specifically selected according to the design requirements of the actual application scene. For example, the power line core conductor 21 is made of annealed copper material, and the annealed copper material is made into a power line core conductor 21 twisted by multiple single filaments through a drawing and twisting process. The first power insulation layer 22 is made of overlapping mica tape wrapping, the second power insulation layer 23 is made of overlapping glass fiber tape wrapping, and the third power insulation layer 24 is made of high-temperature-resistant silicone rubber material or flame-retardant cross-linked polyethylene material.

[0034] Figure 4 As an optional example, as shown in Figure 1 、 Figure 2 and Figure 4 , in the embodiment, the control cable 3 is arranged in the cavity formed by the power line core 2 and the stable spacing support 1 one by one, and the control cable 3 includes two parallel control line cores 31 and a control inner sheath 32 and a control outer sheath 33 which are sequentially wrapped outside the two control line cores 31. The control line core 31 includes a control line core conductor 311 and a first control insulation layer 312 and a second control insulation layer 313 which are sequentially wrapped outside the control line core conductor 311. In the embodiment, the specific materials of the internal components of the control cable 3 can be specifically selected according to the design requirements of the actual application scene. For example, the control line core conductor 311 is made of annealed copper material or annealed aluminum alloy material, the first control insulation layer 312 is made of overlapping mica tape wrapping, and the second control insulation layer 313 is made of overlapping alkali-free glass fiber tape wrapping. The control inner sheath 32 is made of flame-retardant cross-linked polyethylene material, and the control outer sheath 33 is made of low-smoke halogen-free flame-retardant polyolefin material.

[0035] In the embodiment, the power line core 2 and the control cable 3 are straightly assembled in the stable spacing support 1, and multiple transmission components are integrated in the same fireproof cable without a twisting process, realizing the multi-core design and manufacturing of the fireproof cable, avoiding the increase of materials due to the twisting process, and avoiding the increase of rigidity due to the twisting process.

[0036] The cooling channel 4 in the embodiment is arranged in the cavity formed by the power line core 2, the stable interval support 1 and the isolation layer 5 in a one-to-one correspondence. The cooling channel 4 in the embodiment is used to transport cooling fluid, such as cooling liquid or cooling gas flow. When the high-temperature-resistant fireproof line group in the embodiment is in service, the cooling channel 4 can reduce the temperature inside the whole assembly by transporting the cooling fluid, can increase the transmission load when the assembly is in normal operation, can accelerate the heat dissipation of the assembly when the assembly is in a high-temperature or fire environment, and can improve the safety and stability of the line and increase the time for the line to remain intact. The cooling channel 4 in the embodiment can be made of specific materials according to the design requirements of the actual application environment, such as made of silicon rubber material with good high and low temperature resistance and mechanical and physical properties, or made of metal material with good strength and toughness, such as aluminum alloy material.

[0037] The high-temperature-resistant fireproof line group according to the embodiment of the application can integrate multiple transmission assemblies in the same cable in a flat assembly manner while improving the load capacity and safety service performance, save installation and laying resources, and reduce material and process costs.

[0038] The above is only a specific embodiment of the application, but the protection scope of the application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A high-temperature resistant fireproof wire assembly, characterized in that, The high-temperature fireproof wire assembly includes a stable spacer bracket, two power cores, two control cables, two cooling pipes, an isolation layer, an inner sheath, and an outer sheath. The cross-section of the stable spacer bracket is Z-shaped, consisting of a first horizontal section, an oblique section, and a second horizontal section. One end of the first horizontal section is integrally connected to the upper end of the oblique section, and one end of the second horizontal section is integrally connected to the lower end of the oblique section. The isolation layer is located on the outside of the stable spacer bracket, and the inner and outer sheaths are sequentially wrapped around the outside of the isolation layer from the inside out.

2. The high-temperature resistant fireproof wire assembly according to claim 1, characterized in that, The cross-section of the first horizontal section is generally arc-shaped, the upper end surface of the first horizontal section is a circular arc surface, and the lower end surface of the first horizontal section is a plane. The cross-section of the second horizontal section is generally arc-shaped, the upper end surface of the second horizontal section is a plane, and the lower end surface of the second horizontal section is a circular arc surface.

3. The high-temperature resistant fireproof wire assembly according to claim 1, characterized in that, A first buffer channel is provided on the first horizontal section. The cross-section of the first buffer channel is elliptical, and the major axis of the ellipse is parallel to the lower end face of the first horizontal section. A second buffer channel is provided on the second horizontal section. The cross-section of the second buffer channel is elliptical, and the major axis of the ellipse is parallel to the upper end face of the second horizontal section.

4. The high-temperature resistant fireproof wire assembly according to claim 1, characterized in that, The cross-section of the isolation layer is circular. The upper end face of the first horizontal part of the stabilizing spacer has the same radius of curvature as the isolation layer, and the lower end face of the second horizontal part of the stabilizing spacer has the same radius of curvature as the isolation layer.

5. The high-temperature resistant fireproof wire assembly according to claim 1, characterized in that, The power conductors are arranged one-to-one in the cavity between the stable spacer and the isolation layer.

6. The high-temperature resistant fireproof wire assembly according to claim 1, characterized in that, One power conductor is disposed in the cavity formed by the first horizontal part, the inclined part and the inner wall of the isolation layer of the stable spacer bracket, and the other power conductor is disposed in the cavity formed by the second horizontal part, the inclined part and the inner wall of the isolation layer of the stable spacer bracket.

7. The high-temperature resistant fireproof wire assembly according to claim 1, characterized in that, The power conductor includes a power conductor and a first power insulation layer, a second power insulation layer, and a third power insulation layer that are sequentially wrapped around the outside of the power conductor from the inside out.

8. The high-temperature resistant fireproof wire assembly according to claim 1, characterized in that, The control cables are installed one-to-one within the cavity formed by the power conductor cores and the stable spacer bracket. The control cable includes two parallel control conductor cores and an inner control sheath and an outer control sheath that are sequentially wrapped around the outside of the two control conductor cores.

9. The high-temperature resistant fireproof wire assembly according to claim 1, characterized in that, The control core includes a control core conductor and a first control insulation layer and a second control insulation layer sequentially covering the outside of the control core conductor.

10. The high-temperature resistant fireproof wire assembly according to claim 1, characterized in that, Cooling channels are arranged one-to-one within the cavity formed by the power line core, the stable spacer bracket, and the isolation layer.

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