CN218585681U - B1-level flame-retardant control cable - Google Patents
B1-level flame-retardant control cable Download PDFInfo
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- CN218585681U CN218585681U CN202222739230.2U CN202222739230U CN218585681U CN 218585681 U CN218585681 U CN 218585681U CN 202222739230 U CN202222739230 U CN 202222739230U CN 218585681 U CN218585681 U CN 218585681U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The utility model belongs to the technical field of the cable, a B1 level flame retardant control cable is disclosed, including four insulating layers, the inside of insulating layer is provided with a plurality of conductors, the outside of four insulating layers is provided with the glass fiber layer, the outside of four insulating layers is provided with fire-retardant filler, the outside of buffer board is provided with first fire-retardant rubber cover, the outside annular array of first fire-retardant rubber cover is provided with a plurality of second buffering lugs, be provided with first buffering lug between two adjacent second buffering lugs, the outside of first buffering lug is provided with second fire-retardant rubber cover, the outside of buffer layer is provided with the fire-retardant layer of protection, the outside on fire-retardant layer of protection is provided with the oversheath, the shock resistance and the stretching resistance that some current B1 level flame retardant control cables can't satisfy the demand have been solved in this application, cable abrasion consumes greatly in the environment of long-term vibrations, thereby reduce life's problem.
Description
Technical Field
The application relates to the technical field of cables, in particular to a B1-level flame-retardant control cable.
Background
In recent years, with the continuous development and progress of society, the safety consciousness of people is gradually improved, and as for cables, flame-retardant cables are widely applied, but only the flame-retardant cables cannot meet the requirements of the current society, and are more stable and safer, which is the main development trend of the current cables, and as for the stability and safety analysis of the current cables, the flame-retardant B1 cable is the best choice, and the B1 cable is a novel cable which is developed in recent years, and a plurality of national key projects definitely adopt the B1 cable, such as the projects of the Western-Ann subway, the Suzhou subway, the Chongqing subway and the like in recent years.
In some severe subway environments, the shock resistance and the tensile resistance of some conventional B1-level flame-retardant control cables cannot meet the requirements, and the cable is large in abrasion consumption in a long-term vibration environment, so that the service life is shortened.
In order to solve the above problems, the present application provides a B1-class flame retardant control cable.
SUMMERY OF THE UTILITY MODEL
The application provides the following technical scheme: the utility model provides a B1 level fire-retardant control cable, includes four insulating layers, the inside of insulating layer is provided with a plurality of conductors, four the outside of insulating layer is provided with glass fiber layer, four the outside of insulating layer is provided with fire-retardant filler, fire-retardant filler sets up the inboard at glass fiber layer, glass fiber layer's outside is provided with the buffer layer, the buffer layer includes the armor, the armor sets up the outside at glass fiber layer, the outside annular array of armor is provided with a plurality of buffer boards, the outside of buffer board is provided with first flame retardant rubber cover, the outside annular array of first flame retardant rubber cover is provided with a plurality of second buffering lugs, adjacent two be provided with first buffering lug between the second buffering lug, the outside of first buffering lug is provided with second flame retardant rubber cover, the outside of buffer layer is provided with protects fire-retardant layer, the outside of protecting fire-retardant layer is provided with the oversheath.
Through the technical scheme, the problems that the shock resistance and the tensile resistance of some B1-level flame-retardant control cables cannot meet the requirements, and the cable is large in abrasion consumption in a long-term vibration environment, so that the service life is shortened are solved.
Furthermore, the protection flame-retardant layer comprises a first flame-retardant layer, a second flame-retardant layer and a third flame-retardant layer, the first flame-retardant layer is arranged on the outer side of the buffer layer, the second flame-retardant layer is arranged on the outer side of the first flame-retardant layer, and the third flame-retardant layer is arranged on the outer side of the second flame-retardant layer.
Through above-mentioned technical scheme, the cooperation on first fire-retardant layer, second fire-retardant layer and third fire-retardant layer forms the fire-retardant protective effect of multilayer of cable, promotes the fire behaviour of cable.
Furthermore, the first flame-retardant layer is a low-smoke halogen-free flame-retardant polyolefin sleeve, the second flame-retardant layer is a low-smoke halogen-free flame-retardant wrapping tape, and the third flame-retardant layer is a fire-resistant mica tape.
Furthermore, the first buffering bumps and the second buffering bumps are arranged in a staggered mode, and the first buffering bumps and the second buffering bumps are made of rubber materials.
Furthermore, the buffer board is arranged in a Z-shaped structure, and is made of high-elasticity rubber.
Furthermore, the flame-retardant filler is a high-flame-retardant linear filling rope, the insulating layer is made of a cross-linked polyethylene material, and the outer sheath is a special low-smoke halogen-free sheath.
Through above-mentioned technical scheme, the special type low smoke and zero halogen sheath can not release toxic gas, can be relieved and be applied to intensive place of stream of people, for example market, subway etc..
Furthermore, the armor layer is formed by weaving galvanized steel wires, and the first flame-retardant layer, the second flame-retardant layer and the third flame-retardant layer are equal in thickness.
Through the technical scheme, the high-flame-retardant linear filling rope enables the cable to have good roundness, so that the relative position of the insulated wire cores in the cable is stable, and the high-flame-retardant linear filling rope can realize the flame-retardant protection of the last layer on the insulated layer.
To sum up, this application includes following beneficial technological effect:
1. the utility model provides a first flame retardant rubber cover of buffer layer, first buffering lug, the flame retardant rubber cover of second, the second buffers the mutually supporting of lug and buffer board, the effect of the multistage buffering impact force of cable has been realized, great promotion the anti-seismic performance of cable, the effect of cooperation armor simultaneously, make the cable can normally work in the adverse circumstances of each harmful medium, make the tensile strength of cable promote by a wide margin, promote the stretch-proofing nature of cable, satisfy subway adverse circumstances's use, reduce the cable and consume wearing and tearing in long-term vibrations environment, the life of extension cable.
2. This application utilizes the cooperation of fire-retardant filler, oversheath, three-layer flame retardant coating and glass fiber layer to realize the fire-retardant protective effect of multilayer level, promotes the flame retardant efficiency of cable, and protects flame retardant coating and oversheath burning and can not release toxic gas, can be relieved and be applied to the intensive place of stream of people, for example market, subway etc.
Drawings
FIG. 1 is a schematic structural diagram of the present application;
FIG. 2 is a schematic diagram of a buffer layer structure according to the present application;
fig. 3 is a schematic view of the structure of the flame retardant layer of the present application.
The reference numbers in the figures illustrate:
1. an outer sheath; 2. an insulating layer; 3. a flame retardant filler; 4. a conductor; 5. a protective flame retardant layer; 51. a third flame retardant layer; 52. a second flame retardant layer; 53. a first flame retardant layer; 6. a buffer layer; 61. a first flame-retardant rubber sleeve; 62. a first buffer bump; 63. a second flame-retardant rubber sleeve; 64. a second buffer bump; 65. an armor layer; 66. a buffer plate; 7. a glass fiber layer.
Detailed Description
The technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by those of ordinary skill in the art without any inventive work based on the embodiments in the present application belong to the protection scope of the present application.
In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
The embodiment is as follows:
referring to fig. 1, 2 and 3, the embodiment of the present application discloses a B1-level flame-retardant control cable, which includes four insulating layers 2, a plurality of conductors 4 are disposed inside the insulating layers 2, glass fiber layers 7 are disposed outside the four insulating layers 2, the glass fiber layers 7 are not easily combustible and can be melted into glass beads at high temperature, and can form a flame-retardant protection effect on a cable core of the cable, flame-retardant fillers 3 are disposed outside the four insulating layers 2, the flame-retardant fillers 3 are disposed inside the glass fiber layers 7, a buffer layer 6 is disposed outside the glass fiber layers 7, the buffer layer 6 includes an armor layer 65, the armor layer 65 is disposed outside the glass fiber layers 7, a plurality of buffer plates 66 are disposed in an outer annular array of the armor layer 65, the buffer plates 66 are disposed in a "Z" -shaped structure, the buffer plates 66 are made of high-elasticity rubber, a first flame-retardant rubber sleeve 61 is disposed outside the buffer plates 66, the outer annular array of the first flame retardant rubber sleeve 61 is provided with a plurality of second buffering bumps 64, a first buffering bump 62 is arranged between two adjacent second buffering bumps 64, the first buffering bumps 62 and the second buffering bumps 64 are arranged in a staggered manner, the first buffering bumps 62 and the second buffering bumps 64 are made of rubber, the rubber is a high-elasticity polymer material with reversible deformation, is rich in elasticity at room temperature, can generate large deformation under the action of small external force, can recover the original shape after the external force is removed, the second flame retardant rubber sleeve 63 is arranged on the outer side of the first buffering bump 62, when the cable is impacted due to vibration, the second flame retardant rubber sleeve 63 can buffer certain impact force and transmit the residual force to the first buffering bump 62, and the second buffering bumps 64 are extruded by the first buffering bumps 62 under the influence of the impact force, first buffering lug 62 and second buffering lug 64 extrude each other and further cushion the impact force, first flame retardant rubber cover 61 continues to transmit remaining impact force to first flame retardant rubber cover 61 again simultaneously, first flame retardant rubber cover 61 atress extrusion buffer board 66, first flame retardant rubber cover 61 cooperation buffer board 66 further cushions the impact force, wherein first flame retardant rubber cover 61 atress extrusion buffer board 66, the buffer board 66 that is "Z" shape structural feature setting can produce deformation by the extruded in-process, realize the effect of better buffering impact force, to sum up, realize the effect of multistage buffering impact force, great promotion the anti-seismic performance of cable, the outside of buffer layer 6 is provided with protection flame retardant layer 5, the outside of protection flame retardant layer 5 is provided with oversheath 1, oversheath 1 is the low smoke zero halogen sheath of special type, oversheath 1 is the outermost inoxidizing protection of cable, the smoke when the low smoke zero halogen sheath can reduce the burning when the special type sheath burns, and visibility is improved.
Referring to fig. 3, the protective flame-retardant layer 5 includes a first flame-retardant layer 53, a second flame-retardant layer 52 and a third flame-retardant layer 51, the first flame-retardant layer 53 is disposed on the outer side of the buffer layer 6, the second flame-retardant layer 52 is disposed on the outer side of the first flame-retardant layer 53, the third flame-retardant layer 51 is disposed on the outer side of the second flame-retardant layer 52, and the first flame-retardant layer 53, the second flame-retardant layer 52 and the third flame-retardant layer 51 cooperate to form a multi-layer flame-retardant protective effect of the cable, so as to improve the flame-retardant performance of the cable.
Referring to fig. 3, the first flame retardant layer 53 is a low-smoke halogen-free flame retardant polyolefin sheath, the second flame retardant layer 52 is a low-smoke halogen-free flame retardant wrapping tape, the low-smoke halogen-free flame retardant polyolefin sheath and the low-smoke halogen-free flame retardant wrapping tape are resistant to burning in a fire, and can not release toxic gases, and can be applied to places with dense people flows, such as shopping malls, subways and the like, the third flame retardant layer 51 is a fire-resistant mica tape, the fire-resistant mica tape has the advantages of fire resistance and combustion resistance, and basically no volatilization of harmful smoke exists, the flame retardant performance of the cable is improved by using the cooperation of the first flame retardant layer 53, the second flame retardant layer 52 and the third flame retardant layer 51, and meanwhile, the buffer layer 6 can be protected in a flame retardant manner.
Referring to fig. 1, the flame-retardant filler 3 is a high-flame-retardant linear filling rope, the high-flame-retardant linear filling rope enables the cable to have good roundness, so that the relative position of an insulated wire core in the cable is stable, the high-flame-retardant linear filling rope can achieve flame-retardant protection of the last layer on the insulating layer 2, the multilayer flame-retardant protection effect on the conductor 4 and the insulating layer 2 is achieved, the insulating layer 2 is made of a cross-linked polyethylene material, the cross-linked polyethylene material has excellent heat resistance, is not greatly influenced by temperature, and has the characteristics of high hardness, high wear resistance and the like, combustion products mainly comprise carbon dioxide and water, the environment is less harmful, and the requirement on fire safety is met.
Referring to fig. 2 and 3, the armor layer 65 is formed by weaving galvanized steel wires, and the armor layer 65 can work normally in a severe environment with various harmful media, so that the tensile strength of the cable is greatly improved, the tensile resistance of the cable is improved, and the thicknesses of the first flame-retardant layer 53, the second flame-retardant layer 52 and the third flame-retardant layer 51 are equal.
The implementation principle of the embodiment of the application is as follows: when the cable is impacted due to vibration, the second flame-retardant rubber sleeve 63 can buffer a certain impact force, the residual force is transmitted to the first buffer bump 62, the first buffer bump 62 is influenced by the impact force to extrude the second buffer bump 64, the first buffer bump 62 and the second buffer bump 64 are mutually extruded to further buffer the impact force, meanwhile, the first flame-retardant rubber sleeve 61 continues to transmit the residual impact force to the first flame-retardant rubber sleeve 61, the first flame-retardant rubber sleeve 61 extrudes the buffer plate 66 under the stress, the first flame-retardant rubber sleeve 61 is matched with the buffer plate 66 to further buffer the impact force, wherein the first flame-retardant rubber sleeve 61 extrudes the buffer plate 66 under the stress, the buffer plate 66 which is arranged in the Z-shaped structural characteristic can deform in the extrusion process, so that the better effect of buffering the impact force is realized, in sum, the effect of multi-stage buffering the impact force is realized, the anti-seismic performance of the cable is greatly improved, meanwhile, the action of the armor layer 65 is matched, so that the cable can normally work in severe environments with harmful media, the strength of the cable is greatly improved, the tensile resistance of the cable, the tensile wear resistance of the cable is reduced, and the cable service life of the cable in the long-time is prolonged.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. A B1-level flame-retardant control cable comprises four insulating layers (2), and is characterized in that: the cable is characterized in that a plurality of conductors (4) are arranged inside the insulating layer (2), a glass fiber layer (7) is arranged outside the insulating layer (2), a flame-retardant filler (3) is arranged outside the insulating layer (2), the flame-retardant filler (3) is arranged on the inner side of the glass fiber layer (7), a buffer layer (6) is arranged outside the glass fiber layer (7), the buffer layer (6) comprises an armor layer (65), the armor layer (65) is arranged outside the glass fiber layer (7), an outer annular array of the armor layer (65) is provided with a plurality of buffer plates (66), the outer portion of each buffer plate (66) is provided with a first flame-retardant rubber sleeve (61), an outer annular array of the first flame-retardant rubber sleeve (61) is provided with a plurality of second buffer bumps (64), two adjacent first buffer bumps (62) are arranged between the second buffer bumps (64), the outer side of the first buffer bumps (62) is provided with second flame-retardant rubber sleeves (63), the outer side of the buffer layer (6) is provided with a flame-retardant protective layer (5), and the outer side of the outer sheath (1) is provided with a protective layer (1).
2. The B1-class flame retardant control cable of claim 1, wherein: the protective flame-retardant layer (5) comprises a first flame-retardant layer (53), a second flame-retardant layer (52) and a third flame-retardant layer (51), the first flame-retardant layer (53) is arranged on the outer side of the buffer layer (6), the second flame-retardant layer (52) is arranged on the outer side of the first flame-retardant layer (53), and the third flame-retardant layer (51) is arranged on the outer side of the second flame-retardant layer (52).
3. The B1-class flame retardant control cable of claim 2, wherein: first fire-retardant layer (53) are low smoke and zero halogen fire-retardant polyolefin cover, second fire-retardant layer (52) are low smoke and zero halogen fire-retardant band, fire-retardant layer (51) of third are fire-resistant mica tape.
4. The B1-class flame retardant control cable of claim 1, wherein: the first buffering bumps (62) and the second buffering bumps (64) are arranged in a staggered mode, and the first buffering bumps (62) and the second buffering bumps (64) are made of rubber materials.
5. The B1-class flame retardant control cable of claim 1, wherein: the buffer plate (66) is arranged in a Z-shaped structure, and the buffer plate (66) is made of high-elasticity rubber.
6. The B1-class flame retardant control cable of claim 1, wherein: the flame-retardant filler (3) is a high-flame-retardant linear filling rope, the insulating layer (2) is made of a cross-linked polyethylene material, and the outer sheath (1) is a special low-smoke halogen-free sheath.
7. The B1-class flame retardant control cable of claim 2, wherein: the armor layer (65) is formed by weaving galvanized steel wires, and the first flame-retardant layer (53), the second flame-retardant layer (52) and the third flame-retardant layer (51) are equal in thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222739230.2U CN218585681U (en) | 2022-10-18 | 2022-10-18 | B1-level flame-retardant control cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222739230.2U CN218585681U (en) | 2022-10-18 | 2022-10-18 | B1-level flame-retardant control cable |
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| Publication Number | Publication Date |
|---|---|
| CN218585681U true CN218585681U (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222739230.2U Active CN218585681U (en) | 2022-10-18 | 2022-10-18 | B1-level flame-retardant control cable |
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| CN (1) | CN218585681U (en) |
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- 2022-10-18 CN CN202222739230.2U patent/CN218585681U/en active Active
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