Anti-corona photovoltaic low-smoke flame-retardant cable
By setting up multi-layer structures and specific materials in the cable, the problems of excessive smoke and poor corona resistance during the cable combustion are solved, and low smoke flame retardant and corona resistance are achieved, extending the cable life and improving the overall performance .
Patent Information
- Application Number
- CN202420457845.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-03-11
AI Technical Summary
Existing cables release a large amount of smoke when burning, lack flame retardant effects, and have poor corona resistance, which affects life safety and service life.
A low-smoke flame retardant cable for anti-corona photovoltaics was designed. By setting up an anti-aging layer, a low-smoke flame retardant layer, a high-temperature layer, a corona anti-corona layer, a reinforcement layer, an elastic layer, a shielding layer and an insulating layer, it adopts no Halogen flame retardant, chlorosulfonated polyethylene, polytetrafluoroethylene film, corona-resistant coating, metal fibers and galvanized steel wire mesh braids and other materials, forming a multi-layer structure to improve the flame retardant, high temperature resistance and corona resistance of cables and insulation properties.
It effectively extends the service life of the cable, improves the flame retardant effect, reduces smoke generation, enhances the anti-corona capability and shielding effect, reduces external signal interference, and improves the overall performance of the cable.
Smart Images
Figure CN222145866U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cables, in particular to a low-smoke flame-retardant cable for anti-corona photovoltaic use. Background Art
[0002] Cables are usually made of several or several groups of wires, each group of at least two, twisted together to form a rope-like cable. Each group of wires is insulated from each other and often twisted around a center. The entire outer layer is covered with a highly insulating covering. They are mostly erected in the air or installed underground or underwater for telecommunications or power transmission. Cables can be divided into power cables, communication cables, and control cables according to their uses. Cables are mostly used in densely populated and densely gridded areas and in places with heavy traffic. When laying across rivers, across rivers, and on the seabed, long-span overhead lines can be avoided. Cables can also be used in places where it is necessary to avoid interference with communications caused by overhead lines and in places where aesthetics or exposure of targets need to be considered.
[0003] According to the application number: CN202021554477.1, a thermoplastic elastomer cable includes an optical cable body, a thermoplastic elastomer sheath is provided around the front of the optical cable body, a polyester film tape is provided on the inner side around the front of the thermoplastic elastomer sheath, an insulating layer is provided on the inner side of the polyester film tape, an ethylene propylene rubber insulator is provided around the front of the insulating layer, a copper conductor is provided on the inner side of the ethylene propylene rubber insulator, and a fiber core skeleton is provided around the inner side of the ethylene propylene rubber insulator.
[0004] The cables in the above cases do not have flame retardant effects, and they will release a lot of smoke when burning, posing a huge threat to people's lives and safety. At the same time, the wear resistance and anti-corona effects of the cables are not ideal. For this reason, we provide a low-smoke flame retardant cable for anti-corona photovoltaics. Utility Model Content
[0005] The utility model aims to provide a low-smoke flame-retardant cable for photovoltaic use to solve the problems raised in the above-mentioned background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-smoke flame-retardant cable for anti-corona photovoltaic use, comprising a cable body, wherein the cable body is composed of a first protective layer, a second protective layer and a plurality of cable cores, the number of the second protective layers is several and they are respectively arranged inside the first protective layer, the cable core is arranged inside the second protective layer, and the first protective layer is composed of an anti-aging layer, a flame-retardant and high-temperature resistant layer, an anti-corona layer, a reinforcement layer, a first elastic layer, a shielding layer and a first insulating layer.
[0007] Preferably, the flame retardant and high temperature resistant layer is composed of a low smoke flame retardant layer and a first high temperature resistant layer, and the first high temperature resistant layer is arranged on the inner wall of the low smoke flame retardant layer.
[0008] Preferably, the flame retardant and high temperature resistant layer is arranged on the inner wall of the anti-aging layer, the anti-corona layer is arranged on the inner wall of the flame retardant and high temperature resistant layer, the reinforcing layer is arranged on the inner wall of the anti-corona layer, the first elastic layer is arranged on the inner wall of the reinforcing layer, the shielding layer is arranged on the inner wall of the first elastic layer, and the first insulating layer is arranged on the inner wall of the shielding layer.
[0009] Preferably, the second protective layer is composed of a second insulating layer, a second elastic layer and a second high temperature resistant layer, the second elastic layer is arranged on the inner wall of the second insulating layer, and the second high temperature resistant layer is arranged on the inner wall of the second elastic layer.
[0010] Preferably, the anti-aging layer is made of chlorosulfonated polyethylene, and the low-smoke flame retardant layer is made of a halogen-free flame retardant coating.
[0011] Preferably, the first high temperature resistant layer and the second high temperature resistant layer are both made of polytetrafluoroethylene film, the first elastic layer and the second elastic layer are both made of polyolefin thermoplastic elastomer, and the first insulating layer and the second insulating layer are both made of ethylene propylene rubber.
[0012] Preferably, the anti-corona layer is made of anti-corona paint, the reinforcement layer is made of metal fiber, and the shielding layer is made by weaving galvanized steel wire mesh.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] The utility model improves the anti-aging effect of the cable surface by arranging the anti-aging layer, thereby extending the service life of the cable; improves the flame retardant effect of the cable by arranging the low-smoke flame retardant layer, and will not produce a large amount of smoke when ignited; improves the high temperature resistance of the cable by arranging the first high temperature resistant layer and the second high temperature resistant layer; improves the anti-corona effect of the cable by arranging the anti-corona layer, thereby effectively resisting the long-term impact of high-frequency voltage pulses; improves the strength of the cable by arranging the reinforcement layer, and improves the quality of the cable when in use; improves the elasticity of the cable by arranging the first elastic layer and the second elastic layer; improves the shielding effect of the cable by arranging the shielding layer, and reduces the interference caused by external signals; and improves the insulation effect of the cable by arranging the first insulating layer and the second insulating layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0016] Figure 2 It is a structural cross-sectional view of the side view of the utility model;
[0017] Figure 3 This is a structural cross-sectional view of the side view of the flame retardant and high temperature resistant layer of the utility model.
[0018] In the figure: 1 cable body, 2 first protective layer, 21 anti-aging layer, 22 flame retardant and high temperature resistant layer, 221 low smoke flame retardant layer, 222 first high temperature resistant layer, 23 anti-corona layer, 24 reinforcement layer, 25 first elastic layer, 26 shielding layer, 27 first insulating layer, 3 second protective layer, 31 second insulating layer, 32 second elastic layer, 33 second high temperature resistant layer, 4 cable core. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1-3 A low-smoke flame-retardant cable for anti-corona photovoltaic use, comprising a cable body 1, the cable body 1 is composed of a first protective layer 2, a second protective layer 3 and a plurality of cable cores 4, the number of the second protective layers 3 is several and they are respectively arranged inside the first protective layer 2, the cable core 4 is arranged inside the second protective layer 3, the first protective layer 2 is composed of an anti-aging layer 21, a flame retardant and high temperature resistant layer 22, an anti-corona layer 23, a reinforcement layer 24, a first elastic layer 25, a shielding layer 26 and a first insulating layer 27.
[0021] The flame retardant and high temperature resistant layer 22 is composed of a low-smoke flame retardant layer 221 and a first high temperature resistant layer 222. The first high temperature resistant layer 222 is arranged on the inner wall of the low-smoke flame retardant layer 221. The low-smoke flame retardant layer 221 is made of halogen-free flame retardant coating. The flame retardant and high temperature resistant layer 22 is arranged on the inner wall of the anti-aging layer 21. The anti-aging layer 21 is made of chlorosulfonated polyethylene. The anti-corona layer 23 is arranged on the inner wall of the flame retardant and high temperature resistant layer 22. The anti-corona layer 23 is made of anti-corona coating. The reinforcing layer 24 is arranged on the inner wall of the anti-corona layer 23. The reinforcing layer 24 is made of metal fiber. The first elastic layer 25 is arranged on the inner wall of the reinforcing layer 24. The shielding layer 26 is arranged on the inner wall of the first elastic layer 25. The shielding layer 26 is made of galvanized steel mesh. The first insulating layer 27 is arranged on the inner wall of the shielding layer 26.
[0022] The second protective layer 3 is composed of a second insulating layer 31, a second elastic layer 32 and a second high temperature resistant layer 33. The second elastic layer 32 is arranged on the inner wall of the second insulating layer 31. The first insulating layer 27 and the second insulating layer 31 are both made of ethylene propylene rubber. The first elastic layer 25 and the second elastic layer 32 are both made of polyolefin thermoplastic elastomer. The second high temperature resistant layer 33 is arranged on the inner wall of the second elastic layer 32. The first high temperature resistant layer 222 and the second high temperature resistant layer 33 are both made of polytetrafluoroethylene film.
[0023] By setting the anti-aging layer 21, the anti-aging effect of the cable surface is improved, thereby extending the service life of the cable; by setting the low-smoke flame retardant layer 221, the flame retardant effect of the cable is improved, and a large amount of smoke will not be generated when ignited; by setting the first high-temperature resistant layer 222 and the second high-temperature resistant layer 33, the high-temperature resistance of the cable is improved; by setting the anti-corona layer 23, the anti-corona effect of the cable is improved, thereby effectively resisting the long-term impact of high-frequency voltage pulses; by setting the reinforcement layer 24, the strength of the cable is improved, and the quality of the cable during use is improved; by setting the first elastic layer 25 and the second elastic layer 32, the elasticity of the cable is improved; by setting the shielding layer 26, the shielding effect of the cable is improved, and the interference caused by external signals is reduced; by setting the first insulating layer 27 and the second insulating layer 31, the insulation effect of the cable is improved.
[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A low-smoke flame-retardant cable for corona-resistant photovoltaic use, characterized in that: The invention comprises a cable body (1), wherein the cable body (1) is composed of a first protective layer (2), a second protective layer (3) and a plurality of cable cores (4), wherein the number of the second protective layers (3) is a plurality and they are respectively arranged inside the first protective layer (2), the cable cores (4) are arranged inside the second protective layer (3), and the first protective layer (2) is composed of an anti-aging layer (21), a flame retardant and high temperature resistant layer (22), an anti-corona layer (23), a reinforcement layer (24), a first elastic layer (25), a shielding layer (26) and a first insulating layer (27).
2. The anti-corona low-smoke flame-retardant cable for photovoltaic use according to claim 1, characterized in that: The flame retardant and high temperature resistant layer (22) is composed of a low smoke flame retardant layer (221) and a first high temperature resistant layer (222), and the first high temperature resistant layer (222) is arranged on the inner wall of the low smoke flame retardant layer (221).
3. The anti-corona low-smoke flame-retardant cable for photovoltaic use according to claim 2, characterized in that: The flame retardant and high temperature resistant layer (22) is arranged on the inner wall of the anti-aging layer (21), the anti-corona layer (23) is arranged on the inner wall of the flame retardant and high temperature resistant layer (22), the reinforcing layer (24) is arranged on the inner wall of the anti-corona layer (23), the first elastic layer (25) is arranged on the inner wall of the reinforcing layer (24), the shielding layer (26) is arranged on the inner wall of the first elastic layer (25), and the first insulating layer (27) is arranged on the inner wall of the shielding layer (26).
4. The anti-corona low-smoke flame-retardant cable for photovoltaic use according to claim 3, characterized in that: The second protective layer (3) is composed of a second insulating layer (31), a second elastic layer (32) and a second high temperature resistant layer (33); the second elastic layer (32) is arranged on the inner wall of the second insulating layer (31); and the second high temperature resistant layer (33) is arranged on the inner wall of the second elastic layer (32).
5. The anti-corona low-smoke flame-retardant cable for photovoltaic use according to claim 4, characterized in that: The anti-aging layer (21) is made of chlorosulfonated polyethylene, and the low-smoke flame-retardant layer (221) is made of a halogen-free flame retardant coating.
6. The anti-corona low-smoke flame-retardant cable for photovoltaic use according to claim 5, characterized in that: The first high temperature resistant layer (222) and the second high temperature resistant layer (33) are both made of polytetrafluoroethylene film, the first elastic layer (25) and the second elastic layer (32) are both made of polyolefin thermoplastic elastomer, and the first insulating layer (27) and the second insulating layer (31) are both made of ethylene propylene rubber.
7. The anti-corona low-smoke flame-retardant cable for photovoltaic use according to claim 6, characterized in that: The anti-corona layer (23) is made of anti-corona paint, the reinforcement layer (24) is made of metal fiber, and the shielding layer (26) is made by weaving galvanized steel wire mesh.