High-temperature-resistant cable multi-layer heat insulation protection structure

Abstract

The utility model provides a high temperature resistant cable multi-layer heat insulation protection structure, relates to the cable protection structure field, and comprises a heat insulation protection sleeve and a high temperature resistant cable body, the high temperature resistant cable body passes through the heat insulation protection sleeve inner side, and the heat insulation protection sleeve inner side is provided with a compression resistant structure layer; the pressure-resistant structure layer contains a nano aluminum oxide V-shaped strip and a nano aluminum oxide U-shaped strip, fluoroplastic layers are bonded to the inner side end faces of the nano aluminum oxide V-shaped strip and the nano aluminum oxide U-shaped strip, the inner side faces of the fluoroplastic layers are wrapped with rock wool heat preservation layers, the inner side faces of the rock wool heat preservation layers are wrapped with halogen-free flame-retardant layers, and the outer side faces of the halogen-free flame-retardant layers are wrapped with halogen-free flame-retardant layers. The inner side end of the halogen-free flame-retardant layer is wrapped with an extruded polystyrene layer, and the two ends of the heat insulation protective sleeve are sleeved with limiting ring blocks. According to the utility model, the problem that in the prior art, the tightly connected protection assemblies are difficult to separate without damage, so that the manufacturing cost is relatively high when the cable breaks down and is replaced is solved.

Description

Technical Field

[0001] This utility model relates to the field of cable protection structure technology, specifically to a multi-layer heat insulation protection structure for high-temperature resistant cables. Background Technology

[0002] High-temperature resistant cables are cables capable of transmitting signals or electrical energy normally in high-temperature environments. These cables typically possess good heat resistance and insulation properties, maintaining stable electrical and mechanical properties at high temperatures. They are mainly used in high-temperature industries, automotive manufacturing, aerospace, and petrochemical fields. A search revealed existing technology (Announcement No.: CNCN202321888325.9) on a fire-resistant cable protection structure. The document describes that "this solution uses fire-resistant mica tape inside a corrugated aluminum sheath. Because the fire-resistant mica tape is made of silicate glass fiber, which has the best fire resistance and high-temperature resistance, capable of withstanding environments exceeding 1000℃, it can significantly improve the fire resistance of the fire-resistant cable. This is achieved by filling the interior of the fire-resistant mica tape..." The fireproof cotton core is made of fireproof silicone foam, a high-performance, multi-functional insulation material with excellent fire resistance, heat insulation, sound absorption, and corrosion resistance. It can tightly connect the first and second protective components while improving the overall flexibility of the fire-resistant cable. As can be seen from the above, the fire-resistant protection structure for fire-fighting cables designed in this scheme can effectively solve the problems of high overall manufacturing cost and poor bending performance of existing cables, and can also effectively reduce the difficulty of laying the cable in fire-fighting lines. However, in the existing technology, the tightly connected protective components are difficult to separate without damage, resulting in high manufacturing costs when replacing cables in case of failure. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a multi-layer heat insulation protection structure for high-temperature resistant cables is provided to solve the problem that the tightly connected protective components in existing technologies are difficult to separate without damage, resulting in high manufacturing costs when replacing cables in case of failure.

[0004] To achieve the above objectives, a multi-layer heat insulation protection structure for high-temperature resistant cables is provided, comprising: a heat insulation protective sleeve and a high-temperature resistant cable body, wherein the high-temperature resistant cable body penetrates through the inner side of the heat insulation protective sleeve.

[0005] The inner side of the heat-insulating protective sleeve is provided with a pressure-resistant structural layer, which contains nano-alumina V-shaped strips and nano-alumina U-shaped strips. The inner end faces of the nano-alumina V-shaped strips and nano-alumina U-shaped strips are bonded with a fluoroplastic layer. The inner side of the fluoroplastic layer is wrapped with a rock wool insulation layer. The inner side of the rock wool insulation layer is wrapped with a halogen-free flame-retardant layer. The inner end of the halogen-free flame-retardant layer is wrapped with an extruded polystyrene layer. Limiting ring blocks are fitted at both ends of the heat-insulating protective sleeve.

[0006] Furthermore, the high-temperature resistant cable body has a conductor inside, and the inner side of the heat insulation protective sleeve is in contact with the outer surface of the high-temperature resistant cable body through an extruded polystyrene layer.

[0007] Furthermore, an inner ring surface is provided on the inner side of the limiting ring block; and the inner ring surface is bonded to the outer surface of the high-temperature resistant cable body by an adhesive.

[0008] Furthermore, the outer surface of the heat-insulating protective sleeve is provided with a wear-resistant skin, and the pressure-resistant structural layer is distributed between the wear-resistant skin and the fluoroplastic layer.

[0009] Furthermore, the inner and outer surfaces of the rock wool insulation layer are both provided with a waterproof coating layer.

[0010] Furthermore, a connecting strip is bonded between the nano-alumina V-shaped strip and the nano-alumina U-shaped strip.

[0011] Furthermore, the nano-alumina V-shaped strips and nano-alumina U-shaped strips are distributed in a ring at equal intervals inside the heat insulation protective sleeve.

[0012] The beneficial effects of this utility model are as follows: The multi-layer heat insulation protection structure for high-temperature resistant cables utilizes limiting rings bonded to the surface of the high-temperature resistant cable to position the two ends of the heat insulation protective sleeve at the outer surface of the high-temperature resistant cable, achieving a detachable heat insulation protective sleeve. This allows for easy and undamaged separation of the heat insulation protective sleeve from the surface of the high-temperature resistant cable, facilitating multiple uses of the heat insulation protective sleeve, reducing the overall manufacturing cost of the high-temperature resistant cable, and improving the practicality of the multi-layer heat insulation protection structure for high-temperature resistant cables. The multi-layer heat insulation and flame retardant structure, composed of a fluoroplastic layer, a rock wool insulation layer, a halogen-free flame retardant layer, and an extruded polystyrene layer within the heat insulation protective sleeve, provides efficient heat insulation protection for the inner high-temperature resistant cable, ensuring stable operation of the high-temperature resistant cable. At the same time, the inner side of the heat insulation protective sleeve, composed of a pressure-resistant structural layer consisting of nano-alumina V-shaped strips and nano-alumina U-shaped strips, resists external pressure and impact, enhancing the compressive strength of the multi-layer heat insulation protection structure and extending its service life. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the high-temperature resistant cable and multi-layer heat insulation protection structure according to an embodiment of the present utility model.

[0014] Figure 2 This is a front view cross-sectional schematic diagram of the multi-layer thermal insulation protection structure for cables according to an embodiment of this utility model.

[0015] Figure 3 This is a partial front view cross-sectional schematic diagram of the multi-layer thermal insulation protection structure for cables according to an embodiment of this utility model.

[0016] Figure 4 This is a partial three-dimensional structural diagram of the compressive strength layer in an embodiment of the present invention.

[0017] Figure 5 This is a front view structural diagram of the limiting ring block according to an embodiment of the present utility model.

[0018] In the diagram: 1. Heat-insulating protective sleeve; 11. Wear-resistant outer sheath; 2. High-temperature resistant cable body; 21. Conductor; 3. Limiting ring block; 31. Inner ring surface; 4. Compression-resistant structural layer; 41. Nano-alumina V-shaped strip; 42. Nano-alumina U-shaped strip; 43. Connecting strip; 5. Fluoroplastic layer; 6. Rock wool insulation layer; 61. Waterproof coating layer; 7. Halogen-free flame-retardant layer; 8. Extruded polystyrene layer. Detailed Implementation

[0019] Reference Figures 1 to 5 As shown, this utility model provides a multi-layer heat insulation protection structure for high-temperature resistant cables, including: a heat insulation protective sleeve 1 and a high-temperature resistant cable body 2, wherein the high-temperature resistant cable body 2 penetrates through the inner side of the heat insulation protective sleeve 1.

[0020] The inner side of the heat insulation protective sleeve 1 is provided with a pressure-resistant structural layer 4, which contains nano-alumina V-shaped strips 41 and nano-alumina U-shaped strips 42. The inner end faces of the nano-alumina V-shaped strips 41 and nano-alumina U-shaped strips 42 are bonded with a fluoroplastic layer 5. The inner side of the fluoroplastic layer 5 is wrapped with a rock wool insulation layer 6. The inner side of the rock wool insulation layer 6 is wrapped with a halogen-free flame-retardant layer 7. The inner end of the halogen-free flame-retardant layer 7 is wrapped with an extruded polystyrene layer 8. Limiting ring blocks 3 are sleeved at both ends of the heat insulation protective sleeve 1.

[0021] When heat insulation protection is required for a section of the high-temperature resistant cable body 2, firstly, a limiting ring block 3 is fitted and bonded to the appropriate position of the high-temperature resistant cable body 2. Then, the heat insulation protective sleeve 1 is fitted from one end of the high-temperature resistant cable body 2, and one end of the heat insulation protective sleeve 1 is fitted with the limiting ring block 3. Then, another limiting ring block 3 is fitted and fixed at the other end of the heat insulation protective sleeve 1. At this time, the fluoroplastic layer 5, rock wool insulation layer 6, halogen-free flame retardant layer 7 and extruded polystyrene layer 8 inside the heat insulation protective sleeve 1 form a multi-layer heat insulation and flame retardant structure, which facilitates efficient heat insulation protection of the inner high-temperature resistant cable body 2, ensuring that the high-temperature resistant cable body 2 can still operate stably in harsh environments. At the same time, the compressive strength structure layer 4 composed of nano-alumina V-shaped strips 41 and nano-alumina U-shaped strips 42 on the inner side of the heat insulation protective sleeve 2 has high compressive strength to resist the external pressure and impact force on the high-temperature resistant cable body 2, enhance the compressive strength of the multi-layer heat insulation protective structure, and extend the service life of the multi-layer heat insulation protective structure of the high-temperature resistant cable.

[0022] In this embodiment, a conductor 21 is provided inside the high-temperature resistant cable body 2, and the inner side of the heat insulation protective sleeve 1 is in contact with the outer surface of the high-temperature resistant cable body 2 through an extruded polystyrene layer 8.

[0023] As a preferred implementation, the high-temperature resistant cable body 2 is an existing cable capable of transmitting signals or electrical energy normally in high-temperature environments, and can operate stably in high-temperature environments to ensure the normal operation and safety of connected equipment. The extruded polystyrene layer 8 has the characteristics of high thermal resistance and low linear expansion rate, which can significantly improve the thermal insulation performance. At the same time, it is chemically stable and will not release harmful substances, thus playing a role in heat insulation and protection for the internally sheathed high-temperature resistant cable body 2.

[0024] In this embodiment, an inner ring surface 31 is provided on the inner side of the limiting ring block 3; and the inner ring surface 31 is bonded to the outer surface of the high-temperature resistant cable body 2 by an adhesive.

[0025] As a preferred embodiment, the limiting ring block 3 is bonded and fixed to the outer surface of the high-temperature resistant cable body 2 through the inner ring surface 31, and the two ends of the heat insulation protective sleeve 1 are tightly connected, which facilitates the positioning of the heat insulation protective sleeve 1 on the surface of the high-temperature resistant cable body 2.

[0026] In this embodiment, the outer surface of the heat insulation protective sleeve 1 is provided with a wear-resistant skin 11, and the pressure-resistant structural layer 4 is distributed between the wear-resistant skin 11 and the fluoroplastic layer 5.

[0027] As a preferred embodiment, the wear-resistant outer sheath 11 facilitates the protection of the multi-layered structure inside the heat-insulating protective sleeve 1. The pressure-resistant structural layer 4 is a VU-shaped structure formed by nano-alumina V-shaped strips 41 and nano-alumina U-shaped strips 42. This VU-shaped structure has the advantages of high pressure resistance and easy bonding, which facilitates resistance to external pressure and impact, enhances the pressure resistance of the multi-layered heat-insulating protective structure, and extends the service life of the high-temperature cable's multi-layered heat-insulating protective structure. The fluoroplastic layer 5 has chemical stability and temperature resistance and heat insulation properties, further providing heat insulation protection for the high-temperature cable body 2.

[0028] In this embodiment, a waterproof coating layer 61 is provided on both the inner and outer end faces of the rock wool insulation layer 6.

[0029] As a preferred implementation, the waterproof coating layer 61 prevents external moisture from entering the rock wool insulation layer 6 and affecting its normal insulation performance. The rock wool insulation layer 6 has excellent thermal insulation performance, low thermal conductivity, and can effectively prevent heat transfer and fire spread, protecting the high-temperature resistant cable body 2 inside.

[0030] In this embodiment, a connecting strip 43 is bonded between the nano-alumina V-shaped strip 41 and the nano-alumina U-shaped strip 42. The nano-alumina V-shaped strip 41 and the nano-alumina U-shaped strip 42 are distributed in a ring at equal intervals inside the heat insulation protective sleeve 1.

[0031] As a preferred embodiment, the annularly distributed nano-alumina V-shaped strips 41 and nano-alumina U-shaped strips 42 are easy to support on the wear-resistant skin 11 and the fluoroplastic layer 5. The compressive strength structure layer 4 made of nano-alumina material can effectively resist external pressure and impact, enhance the compressive strength of the multi-layer heat insulation and protection structure, and at the same time have high melting point and thermal stability, and can maintain structural stability under high temperature reaction conditions, making it convenient to use in high temperature environments.

[0032] This utility model's multi-layer heat insulation protection structure for high-temperature resistant cables effectively solves the problem in existing technologies where tightly connected protective components are difficult to separate without damage, leading to high manufacturing costs when replacing faulty cables. It achieves a detachable heat insulation protective sleeve, allowing for easy and damage-free separation from the surface of the high-temperature resistant cable. This facilitates multiple uses of the heat insulation protective sleeve, reducing the overall manufacturing cost of high-temperature resistant cables and improving the practicality of the multi-layer heat insulation protection structure. It provides efficient heat insulation protection for the inner high-temperature resistant cable, ensuring stable operation. Simultaneously, the inner side of the heat insulation protective sleeve, composed of nano-alumina V-shaped and U-shaped strips, resists external pressure and impact, enhancing the compressive strength of the multi-layer heat insulation protection structure and extending its service life. This invention is suitable for multi-layer heat insulation protection structures for high-temperature resistant cables.

Claims

1. A high temperature resistant cable multilayer thermal barrier protection structure comprising: A heat-insulating protective sleeve (1) and a high-temperature resistant cable body (2), wherein the heat-insulating protective sleeve (1) has a high-temperature resistant cable body (2) penetrating through its inner side, characterized in that: The inner side of the heat insulation protective sleeve (1) is provided with a pressure-resistant structural layer (4), which contains nano-alumina V-shaped strips (41) and nano-alumina U-shaped strips (42). The inner end faces of the nano-alumina V-shaped strips (41) and nano-alumina U-shaped strips (42) are bonded with a fluoroplastic layer (5). The inner side of the fluoroplastic layer (5) is wrapped with a rock wool insulation layer (6). The inner side of the rock wool insulation layer (6) is wrapped with a halogen-free flame retardant layer (7). The inner end of the halogen-free flame retardant layer (7) is wrapped with an extruded polystyrene layer (8). The two ends of the heat insulation protective sleeve (1) are fitted with limit ring blocks (3).

2. A high temperature resistant cable multilayer thermal protection structure according to claim 1, characterized in that, The high-temperature resistant cable body (2) has a conductor (21) inside, and the inner side of the heat insulation protective sleeve (1) is in contact with the outer surface of the high-temperature resistant cable body (2) through an extruded polystyrene layer (8).

3. The high temperature resistant cable multilayer insulation shielding structure according to claim 1, wherein, The inner side of the limiting ring block (3) is provided with an inner ring surface (31); and the inner ring surface (31) is bonded to the outer surface of the high temperature resistant cable body (2) by an adhesive.

4. The high temperature resistant cable multilayer insulation shielding structure according to claim 1, wherein, The outer surface of the heat insulation protective sleeve (1) is provided with a wear-resistant skin (11), and the pressure-resistant structural layer (4) is distributed between the wear-resistant skin (11) and the fluoroplastic layer (5).

5. The high temperature resistant cable multilayer insulation shielding structure according to claim 1, wherein, The rock wool insulation layer (6) has a waterproof coating layer (61) on both its inner and outer surfaces.

6. The high temperature resistant cable multilayer insulation shielding structure of claim 1, wherein, A connecting strip (43) is bonded between the nano-alumina V-shaped strip (41) and the nano-alumina U-shaped strip (42).

7. The high temperature resistant cable multilayer thermal protection structure of claim 1, wherein, The nano-alumina V-shaped strips (41) and nano-alumina U-shaped strips (42) are distributed in a ring at equal intervals inside the heat insulation protective sleeve (1).

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