Fireproof high-flame-retardant cable

Abstract

The utility model belongs to the technical field of cables, and discloses a fireproof high-flame-retardant cable, which comprises a cable core. The fireproof layer is arranged on the cable core in a wrapping manner; the anti-seismic structure is arranged on the fireproof layer; the flame-retardant structure is arranged on the anti-seismic structure in a wrapping manner; the burning-resistant layer is arranged on the flame-retardant structure in a wrapping manner; the anti-seismic structure comprises an anti-seismic layer, the anti-seismic layer is made of rubber, a plurality of cavities are formed in the anti-seismic layer and distributed in a circumferential array mode, the cable cores are arranged in the cavities, the outer surface of the anti-seismic layer is wrapped with an armor layer, the armor layer is wrapped with strip steel, and the cable cores are arranged in the cavities. The armor layer and the flame-retardant structure are arranged in a wrapping mode, the flame-retardant structure comprises a first flame-retardant layer, the first flame-retardant layer is arranged on the armor layer in a wrapping mode, and a second flame-retardant layer is arranged on the outer surface of the first flame-retardant layer in a spraying mode. The anti-seismic cable is simple in structure and low in manufacturing cost, and the anti-seismic performance of the cable can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially relates to a fire -resistant high flame -retardant cable. BACKGROUND

[0002] Fire -resistant high flame -retardant cable refers to the cable when suffering from fire, can keep certain use function or can maintain good electrical property within a certain time, and this kind of cable is designed to ensure electrical safety under a variety of extreme environments, has good fire resistance and high flame resistance.

[0003] The Chinese patent with the publication number CN213519347U discloses a high fire -resistant high flame -retardant wire cable, and the expanded graphite is arranged between the two groups of spacer ring pipes in the embodiment, the expanded graphite has radiation resistance and flame resistance, can resist external radiation, avoids that radiation increases electric loss, the expanded graphite expands when being heated, the rubber ring pipe is stressed, the inner moving groove area reduces, the compression spring shrinks, and the flame -retardant area of the expanded graphite is increased, and the inner core is protected, but the present inventor finds that the structure of the cable is relatively complex, the manufacturing cost is relatively high, and the anti -shock effect of the cable is poor in the practical application, therefore, we propose a fire -resistant high flame -retardant cable. UTILITY MODEL CONTENT

[0004] In order to overcome the defects of the prior art pointed out above, the present inventor has made in-depth research, and after a lot of creative labor, the present utility model is completed.

[0005] Specifically, the technical problem to be solved by the present utility model is to provide a fire -resistant high flame -retardant cable to solve the technical problem that the structure of the current cable is relatively complex, the manufacturing cost is relatively high, and the anti -shock effect of the cable is poor.

[0006] To solve the above technical problems, the present utility model provides the following technical scheme:

[0007] A fire -resistant high flame -retardant cable, comprising: a cable core;

[0008] A fire -resistant layer is wrapped around the cable core;

[0009] An anti -shock structure is arranged on the fire -resistant layer;

[0010] A flame -retardant structure is wrapped around the anti -shock structure;

[0011] A burn -resistant layer is wrapped around the flame -retardant structure;

[0012] An outer sheath is arranged on the burn -resistant layer.

[0013] As an improved technical scheme, the fireproof layer is wound and wrapped by silica gel fiber belts.

[0014] As an improved technical scheme, the anti-seismic structure comprises an anti-seismic layer, the anti-seismic layer is provided by rubber, a plurality of cavities are arranged in the anti-seismic layer, the plurality of cavities are arranged in a circumferential array, the cable core is arranged in the cavity, the outer surface of the anti-seismic layer is wound and wrapped by an armor layer, the armor layer is wound and wrapped by a steel belt, and the armor layer is wound and wrapped by the fire-resistant structure.

[0015] As an improved technical scheme, the fire-resistant structure comprises a first fire-resistant layer, the first fire-resistant layer is wound and wrapped on the armor layer, the outer surface of the first fire-resistant layer is sprayed with a second fire-resistant layer, and the second fire-resistant layer is wound and wrapped by the fireproof layer.

[0016] As an improved technical scheme, the first fire-resistant layer is formed by interweaving, weaving or winding of silicon carbide fiber belts and ceramic fiber belts.

[0017] As an improved technical scheme, the second fire-resistant layer is sprayed by silicate insulated steel belt fire-retardant paint, and the thickness of the second fire-resistant layer is one half of the thickness of the first fire-resistant layer.

[0018] As an improved technical scheme, the fireproof layer is provided by alumina fiber, and the thickness of the fireproof layer is the same as the thickness of the second fire-resistant layer.

[0019] After the above technical scheme is adopted, the cable has the following advantages:

[0020] 1. The cable core is arranged in the cavity of the anti-seismic layer provided by rubber, the armor layer is provided by winding and wrapping the outer surface of the anti-seismic layer by a steel belt, the rubber and the steel belt have tensile properties and anti-seismic properties, the anti-seismic properties of the cable are improved, and the structure is simple and the manufacturing cost is low.

[0021] 2. The first fire-resistant layer formed by interweaving, weaving or winding of silicon carbide fiber belts and ceramic fiber belts, the second fire-resistant layer sprayed by silicate insulated steel belt fire-retardant paint, and the fireproof layer provided by alumina fiber are wound and wrapped on the armor layer in sequence, the silicon carbide fiber belts, the ceramic fiber belts, the silicate insulated steel belt fire-retardant paint and the alumina fiber all have excellent fire-retardant properties and heat-resistant properties, and the fire-retardant properties and the heat-resistant properties of the cable are improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiment description 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 on the premise that the technical scheme of the present application is not deviated.

[0023] Figure 1 It is a whole structure schematic view of the fireproof high flame-retardant cable of the present application.

[0024] Figure 2 It is a whole structure cross-section schematic view of the fireproof high flame-retardant cable of the present application.

[0025] Figure 3 It is a whole structure cross-section schematic view of the fireproof high flame-retardant cable of the present application. Figure 2 It is an enlarged structure schematic view of A place in the middle.

[0026] Explanation of reference signs:

[0027] In the drawings: 1, cable core; 2, fireproof layer; 3, anti-vibration structure; 31, anti-vibration layer; 32, armored layer; 4, flame-retardant structure; 41, first flame-retardant layer; 42, second flame-retardant layer; 5, burn-resistant layer; 6, outer sheath. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0029] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture is changed, the directionality indications will also be changed accordingly.

[0030] Meanwhile, the meaning of "and / or" or "and / or" in the whole text is that three schemes are included. Taking "A and / or B" as an example, the A scheme, or the B scheme, or the scheme of A and B are satisfied at the same time.

[0031] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0032] Referring to Figures 1-3 , a fire-resistant high-flame-retardant cable is provided, which comprises: a cable core 1;

[0033] A fire-resistant layer 2 is provided around the cable core 1;

[0034] An anti-seismic structure 3 is provided on the fire-resistant layer 2;

[0035] A flame-retardant structure 4 is provided around the anti-seismic structure 3;

[0036] A burn-resistant layer 5 is provided around the flame-retardant structure 4;

[0037] An outer sheath 6 is provided on the burn-resistant layer 5.

[0038] Referring to Figure 1 , the fire-resistant layer 2 is provided around the cable core 1 by a silica gel fiber belt (a belt-shaped material made of silica gel and glass fiber yarn), in application, the fire-resistant layer 2 made of silica gel fiber belt is provided around the cable core 1, since the silica gel fiber belt has high temperature resistance and wear resistance, so as to improve the fire resistance of the cable core 1, and further improve the fire resistance of the cable.

[0039] Referring to Figure 2 and Figure 3 , the anti-seismic structure 3 comprises an anti-seismic layer 31 made of rubber, a plurality of cavities are provided in the anti-seismic layer 31, the plurality of cavities are arranged in a circumferential array, the cable core 1 is arranged in the cavity, and the outer surface of the anti-seismic layer 31 is provided with an armor layer 32 made of strip steel, the armor layer 32 is provided around the flame-retardant structure 4, in application, the cable core 1 is arranged in the cavity of the anti-seismic layer 31 made of rubber, and then the armor layer 32 made of strip steel is arranged on the outer surface of the anti-seismic layer 31, since the rubber and the strip steel have tensile and anti-seismic properties, so as to facilitate the improvement of the anti-seismic performance of the cable, and the structure is simple and the manufacturing cost is low.

[0040] Referring to Figure 2 and Figure 3The fireproof structure 4 comprises a first fireproof layer 41, the first fireproof layer 41 is wrapped around the armored layer 32, and an outer surface of the first fireproof layer 41 is sprayed with a second fireproof layer 42, and the second fireproof layer 42 is wrapped around the burn-resistant layer 5.

[0041] The first fireproof layer 41 is formed by interweaving, braiding or winding silicon carbide fiber belts and ceramic fiber belts.

[0042] The second fireproof layer 42 is formed by spraying silicate insulated steel fireproof paint (made of high-viscosity solvent as base material, and adding inorganic silicate particles and other fillers), and the thickness of the second fireproof layer 42 is half of the thickness of the first fireproof layer 41.

[0043] The burn-resistant layer 5 is made of alumina fiber (high-temperature fiber made of alumina), and the thickness of the burn-resistant layer 5 is the same as the thickness of the second fireproof layer 42. In application, the first fireproof layer 41 formed by interweaving, braiding or winding silicon carbide fiber belts and ceramic fiber belts, the second fireproof layer 42 formed by spraying silicate insulated steel fireproof paint, and the burn-resistant layer 5 made of alumina fiber are sequentially wrapped around the armored layer 32. Since the silicon carbide fiber belts, the ceramic fiber belts, the silicate insulated steel fireproof paint and the alumina fiber all have excellent fireproof performance and heat resistance, the fireproof performance of the cable is improved.

[0044] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the scope of protection of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all these equivalent forms also fall within the protection scope defined by the claims attached to the present application.

Claims

1. A fire resistant, high flame retardant cable, characterized in that: The invention relates to a cable, comprising: a cable core (1); a fireproof layer (2) wrapped around the cable core (1); a shockproof structure (3) arranged on the fireproof layer (2); a fire-retardant structure (4) wrapped around the shockproof structure (3); a burn-resistant layer (5) wrapped around the fire-retardant structure (4); an outer sheath (6) arranged on the burn-resistant layer (5).

2. The fire resistant, high flame resistant cable of claim 1, wherein: The fireproof layer (2) is wrapped around by silica gel fiber belts.

3. The fire resistant, high flame resistant cable of claim 1, wherein: The shockproof structure (3) comprises a shockproof layer (31) arranged by rubber, and a plurality of cavities are arranged in the shockproof layer (31) in a circumferential array, and the cable core (1) is arranged in the cavities, and an armor layer (32) is wrapped around the outer surface of the shockproof layer (31), and the armor layer (32) is wrapped around by steel belts, and the armor layer (32) is wrapped around by the fire-retardant structure (4).

4. The fire resistant, high flame resistant cable of claim 3, wherein: The fire-retardant structure (4) comprises a first fire-retardant layer (41) wrapped around the armor layer (32), and a second fire-retardant layer (42) sprayed on the outer surface of the first fire-retardant layer (41), and the second fire-retardant layer (42) is wrapped around by the burn-resistant layer (5).

5. The fire resistant, high flame resistant cable of claim 4, wherein: The first fire-retardant layer (41) is formed by interweaving, weaving or winding of silicon carbide fiber belts and ceramic fiber belts.

6. The fire resistant, high flame resistant cable of claim 5, wherein: The second fire-retardant layer (42) is sprayed by silicate insulated steel belt fire-retardant paint, and the thickness of the second fire-retardant layer (42) is half of the thickness of the first fire-retardant layer (41).

7. The fire resistant, high flame resistant cable of claim 4, wherein: The burn-resistant layer (5) is arranged by aluminum oxide fiber, and the thickness of the burn-resistant layer (5) is the same as the thickness of the second fire-retardant layer (42).

Images