Multi-core stranded high-temperature-resistant ceramic fireproof cable
By introducing an asbestos isolation layer into the high-temperature resistant cable, the problem of short circuit caused by melting mica belts at high temperatures is solved, and the safety and fire resistance of the cables are improved at high temperatures.
Patent Information
- Application Number
- CN202323339959.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-07
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-07
AI Technical Summary
Existing high-temperature resistant cables are prone to melt and short circuits when using mica tape as an insulating layer at high temperatures, and the prior art cannot effectively solve this problem.
Adopt multi-core twisted high-temperature ceramic fire-resistant cable structure, including the outer protective layer, inner support layer, middle fill layer, cable insulation layer, mica protective layer, support cable and asbestos isolation layer, the asbestos isolation layer has a high temperature resistance of up to 1,000 Above degrees Celsius, avoid short circuits.
Through the use of asbestos isolation layer, the cable avoids short circuit at high temperatures, extends the time when the cable closes the switch, and reduces fire losses.
Smart Images
Figure CN222260597U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cables, in particular to a multi-core twisted high-temperature resistant ceramic fireproof cable. Background Art
[0002] At present, China Patent No.: CN201710352595.0 discloses a high temperature resistant cable, the main points of which are: including a main core, a wrapping layer, a shielding layer, a second wrapping layer and a sheath; there are two main cores, the two main cores 1 have the same structure, and the two main cores are provided with conductors and insulating layers in sequence from the inside to the outside along their respective radial directions; the two main cores are twisted into a cable; the conductor is formed by a plurality of metal-plated copper wires with the same single wire diameter being twisted in the same direction, and adjacent layers are twisted in the opposite direction; the insulating layer is made of polyetheretherketone; the insulating layer is extruded on the outside of the conductor; the wrapping layer is formed by mica tape wrapped around the outside of the two main cores twisted together; the shielding layer is formed by woven nickel-plated copper wire with a diameter of 0.1 mm to 0.3 mm on the outside of the wrapping layer; the second wrapping layer is formed by mica tape wrapped around the outside of the shielding layer; the sheath is made of stainless steel tape material, and the stainless steel tape interlocking armor is outside the second wrapping layer. However, in actual use, the prior art still has the problem that when only using mica tape as an insulating layer, it will still melt at a high temperature and cause a short circuit. Utility Model Content
[0003] Therefore, in view of the above problems, the utility model proposes a multi-core twisted high-temperature resistant ceramic fireproof cable, which solves the technical problem that in actual use of the prior art, when only mica tape is used as the insulating layer, it will still melt at a high temperature and cause a short circuit.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multi-core twisted high-temperature resistant ceramic fireproof cable, whose structure includes an outer protective layer, an inner supporting layer, a middle filling layer, a cable insulation layer, a cable body, a mica protective layer, a supporting steel cable, and an asbestos isolation layer. The inner supporting layer is arranged on the inner side of the outer protective layer, the interior of the inner supporting layer is the middle filling layer, a plurality of cable bodies are arranged in the middle filling layer, a cable insulation layer is arranged on the outer side of the cable body, a mica protective layer is arranged on the outer side of the cable insulation layer, the mica protective layer is a structure wound on the cable insulation layer, the thickness of the mica protective layer is 0.3-1mm, at least one supporting steel cable is also arranged in the middle filling layer, an asbestos isolation layer is arranged between every two cable bodies, and the thickness of the asbestos isolation layer is 1-2mm.
[0005] Furthermore, the outer protective layer is made of silicone rubber or butyl rubber, and has a thickness of 3-5 mm.
[0006] Furthermore, the inner supporting layer is made of polyester rubber and has a thickness of 1-3 mm.
[0007] Furthermore, the thickness of the cable insulation layer is 1-3 mm.
[0008] Furthermore, the asbestos isolation layer is sandwiched between two cable bodies, and its pressure is less than 5 MPa.
[0009] Furthermore, the number of the cable bodies is 1 to 6.
[0010] By adopting the above-mentioned technical scheme, the beneficial effect of the utility model is as follows: the multi-core twisted high-temperature resistant ceramic fireproof cable improves the existing technology. In actual use, there is still a situation in which only mica tape is used as the insulating layer and it will still melt at a high temperature to cause a short circuit. The spacing layer of the scheme, that is, the asbestos isolation layer used to separate the cables in the middle, is resistant to high temperatures of more than 1000 degrees Celsius. Common materials are difficult to burn through the asbestos isolation layer due to spontaneous combustion, thereby preventing the cable from short-circuiting and causing a larger fire, and also allowing the front end of the cable to have enough time to turn off the switch, thereby effectively reducing the losses caused by a fire. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the utility model;
[0012] In the figure: 1. Outer protective layer; 2. Inner supporting layer; 3. Middle filling layer; 4. Cable insulation layer; 5. Cable body; 6. Mica protective layer; 7. Supporting steel cable; 8. Asbestos isolation layer. DETAILED DESCRIPTION
[0013] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.
[0014] refer to Figure 1 The present embodiment provides a multi-core twisted high-temperature resistant ceramic fireproof cable, whose structure includes an outer protective layer 1, an inner supporting layer 2, a middle filling layer 3, a cable insulation layer 4, a cable body 5, a mica protective layer 6, a supporting steel cable 7, and an asbestos isolation layer 8. The inner supporting layer 2 is arranged on the inner side of the outer protective layer 1, and the inner part of the inner supporting layer 2 is the middle filling layer 3. A plurality of cable bodies 5 are arranged in the middle filling layer 3, and a cable insulation layer 4 is arranged on the outer side of the cable body 5. A mica protective layer 6 is arranged on the outer side of the cable insulation layer 4. The mica protective layer 6 is a structure wound on the cable insulation layer 4, and the thickness of the mica protective layer 6 is 0.3-1mm. At least one supporting steel cable 7 is also arranged in the middle filling layer 3. An asbestos isolation layer 8 is arranged between every two cable bodies 5, and the thickness of the asbestos isolation layer 8 is 1-2mm.
[0015] The outer protective layer 1 is made of silicone rubber or butyl rubber, and has a thickness of 3-5 mm.
[0016] The inner support layer 2 is made of polyester rubber and has a thickness of 1-3 mm.
[0017] The thickness of the cable insulation layer 4 is 1-3 mm.
[0018] The asbestos isolation layer 8 is sandwiched between the two cable bodies 5, and its pressure is less than 5 MPa.
[0019] The number of the cable bodies 5 is 1 to 6.
[0020] The multi-core twisted high-temperature resistant ceramic fireproof cable improves the existing technology. In actual use, there is still a situation where only mica tape is used as the insulating layer, which will still melt at a high temperature and cause a short circuit. The spacing layer of the present solution, that is, the asbestos isolation layer 8 used to separate the cables in the middle, is resistant to high temperatures of more than 1000 degrees Celsius. Common materials are difficult to burn through the asbestos isolation layer 8 due to spontaneous combustion, thereby preventing the cable from short-circuiting and causing a larger fire, and also allowing the front end of the cable to have enough time to turn off the switch, thereby effectively reducing the losses caused by a fire.
[0021] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0022] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A multi-core twisted high temperature resistant ceramic fireproof cable, characterized in that: Its structure includes an outer protective layer, an inner supporting layer, a middle filling layer, a cable insulation layer, a cable body, a mica protective layer, a supporting steel cable, and an asbestos isolation layer. The inner supporting layer is arranged on the inner side of the outer protective layer, the inner part of the inner supporting layer is the middle filling layer, a plurality of cable bodies are arranged in the middle filling layer, a cable insulation layer is arranged on the outer side of the cable body, a mica protective layer is arranged on the outer side of the cable insulation layer, the mica protective layer is a structure wound on the cable insulation layer, the thickness of the mica protective layer is 0.3-1mm, at least one supporting steel cable is also arranged in the middle filling layer, an asbestos isolation layer is arranged between every two cable bodies, and the thickness of the asbestos isolation layer is 1-2mm.
2. A multi-core twisted high temperature resistant ceramic fireproof cable according to claim 1, characterized in that: The outer protective layer is made of silicone rubber or butyl rubber, and has a thickness of 3-5 mm.
3. A multi-core twisted high temperature resistant ceramic fireproof cable according to claim 1, characterized in that: The inner supporting layer is made of polyester rubber and has a thickness of 1-3 mm.
4. The multi-core twisted high temperature resistant ceramic fireproof cable according to claim 1, characterized in that: The thickness of the cable insulation layer is 1-3 mm.
5. The multi-core twisted high temperature resistant ceramic fireproof cable according to claim 1, characterized in that: The asbestos isolation layer is sandwiched between two cable bodies, and its pressure is less than 5Mpa.
6. The multi-core twisted high temperature resistant ceramic fireproof cable according to claim 1, characterized in that: The cable bodies are provided with 1 to 6 pieces.