A high temperature resistant fire-resistant cable

Abstract

The utility model discloses a high temperature resistant fire-resistant cable, comprising a plurality of conductors, the outer wall of the conductors is provided with a fireproof layer, the outer wall of the fireproof layer is provided with an insulating layer, one side of the insulating layer is provided with a limiting component for limiting the movement of the insulating layer, the outer wall of the limiting component is provided with a protective component for protecting the conductor; the limiting component comprises a spacer block symmetrically arranged on both sides of the insulating layer, and the top center of the spacer block is symmetrically fixedly connected with a plurality of fixed blocks for limiting the movement of the insulating layer. The design of the spacer block and the fixed block of the utility model, when in use, is to space two adjacent conductors by the fixed block and the spacer block, thereby enhancing the position stability between the conductors, and at the same time, the spacer block and the fixed block help to disperse the impact of the outside on the conductor, effectively avoiding the situation that the conductor is squeezed, deformed or displaced under the external pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a high temperature resistant fire-resistant cable. Background Art

[0002] A cable is made of one or more mutually insulated conductors wrapped with insulation and protective layers. It is a wire that transmits electricity or information from one place to another. It is usually a device that uses metal as a conductor to transmit electricity or signals. With the increasing degree of electrification in life, the application of various cables is also diversified, occupying an important position in our lives.

[0003] Traditional cable conductors are protected by fire-proof insulating materials. Multiple conductors are then placed together, the gaps between the conductors are filled, and the cables are wrapped with tape and then covered with a sheath to protect them. However, when the fillers are used to fill and fix the gaps between multiple conductors, when the cable is hit, the conductors inside the cable are displaced, causing damage to the conductors. Utility Model Content

[0004] The utility model aims to provide a high temperature resistant fire-resistant cable to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a high temperature resistant fire-resistant cable, comprising a plurality of conductors, the outer wall of the conductors is provided with a fireproof layer, the outer wall of the fireproof layer is provided with an insulating layer, one side of the insulating layer is provided with a limiting component for limiting the movement of the conductor, and the outer wall of the limiting component is provided with a protective component for protecting the conductor;

[0006] The limiting component comprises separation blocks symmetrically arranged on both sides of the insulating layer, and a plurality of fixing blocks for limiting the movement of the insulating layer are symmetrically fixedly connected to the top center of the separation block.

[0007] Preferably, one side of the fixing block is configured to be in an arc shape that matches the outer wall of the insulating layer.

[0008] Preferably, a plurality of heat dissipation holes for heat dissipation are symmetrically provided in the middle of the fixing block.

[0009] Preferably, the protection assembly comprises a strap sleeved on the middle part of the fixing block, and a protective sheath is sleeved on the outside of the strap.

[0010] Preferably, a filler for limiting the movement of the fixing block and the conductor is provided inside the wrapping tape.

[0011] Preferably, the fireproof layer comprises mica paper, glass fiber cloth is symmetrically arranged on the top and bottom of the mica paper, and fixing parts for fixing the positions of the mica paper and the glass fiber cloth are arranged at the connection between the mica paper and the glass fiber cloth.

[0012] Preferably, the fixing member comprises an adhesive symmetrically arranged on the top and bottom of the mica paper, and the glass fiber cloth is fixedly connected to a side of the adhesive away from the mica paper.

[0013] Technical effects and advantages of the utility model:

[0014] The design of the separator block and the fixing block of the utility model, when in use, provides a spacing between two adjacent conductors through the fixing block and the separator block, thereby enhancing the position stability between the conductors. At the same time, the separator block and the fixing block help to disperse the impact of the outside on the conductors, effectively preventing the conductors from being squeezed, deformed or displaced under external pressure. 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 schematic diagram of the cross-sectional structure of the utility model.

[0017] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model.

[0018] Figure 4 It is a schematic diagram of the fireproof layer layer connection structure of the utility model.

[0019] In the figure: 1. conductor; 2. fireproof layer; 201. mica paper; 202. glass fiber cloth; 203. adhesive; 3. insulating layer; 4. separator block; 5. fixing block; 6. heat dissipation hole; 7. wrapping tape; 8. sheath; 9. filler. DETAILED DESCRIPTION

[0020] 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.

[0021] The utility model provides Figure 1-4A high temperature resistant fire-resistant cable is shown, comprising a plurality of conductors 1, wherein the outer wall of the conductor 1 is provided with a fireproof layer 2, the outer wall of the fireproof layer 2 is provided with an insulating layer 3, a limiting component for limiting the movement of the conductor 1 is provided on one side of the insulating layer 3, and the outer wall of the limiting component is provided with a protective component for protecting the conductor 1; the limiting component comprises a partition block 4 symmetrically arranged on both sides of the insulating layer 3, a plurality of fixed blocks 5 for limiting the movement of the insulating layer 3 are symmetrically fixedly connected to the center of the top of the partition block 4, the fireproof layer 2 comprises mica paper 201, and the mica paper Glass fiber cloth 202 is symmetrically arranged at the top and bottom of 201, and a fixing piece for fixing the position of mica paper 201 and glass fiber cloth 202 is arranged at the connection between mica paper 201 and glass fiber cloth 202. The fixing piece includes an adhesive 203 symmetrically arranged at the top and bottom of mica paper 201, and the glass fiber cloth 202 is fixedly connected to the side of the adhesive 203 away from the mica paper 201. One side of the fixing block 5 is arranged to be an arc shape adapted to the outer wall of the insulating layer 3, and a plurality of heat dissipation holes 6 for heat dissipation are symmetrically opened in the middle center of the fixing block 5.

[0022] It should be noted that the conductor 1 is made of annealed single or twisted copper conductor. The annealed single conductor 1 is made of a single copper wire and is heat-treated to have good electrical conductivity. The twisted copper conductor 1 is made of multiple thin copper wires twisted together. The twisted structure helps to reduce the resistance of the cable and improve the efficiency of current transmission, while also increasing the flexibility and wear resistance of the conductor. The fireproof layer 2 is composed of mica paper 201 and glass fiber cloth 202 fixed on both sides of the mica paper 201 by adhesive 203. The mica paper 201 has good electrical insulation performance, high temperature resistance, high mechanical strength, chemical corrosion resistance and other characteristics. The mica paper can maintain stable electrical performance at high temperatures and can also effectively isolate the conductor 1 in the cable to ensure safe and stable operation of the equipment. The glass fiber cloth 202 is a composite material made of glass fiber as raw material, with excellent mechanical strength, high temperature resistance and chemical stability. The adhesive 203 is a silicone resin adhesive, which is an adhesive formed by polymerization of siloxane and has excellent high temperature resistance and chemical stability. The silicone resin adhesive can maintain stability in a high temperature environment, while providing good insulation performance and mechanical protection, and avoiding separation at the bonding point of the mica paper 201 and the glass fiber paper 202; the insulating layer 3 is a halogen-free insulation reinforcement layer, which is made of a material that does not contain chlorine compounds, and is intended to reduce the risk of the cable releasing harmful gases in the event of a fire. The halogen-free insulation reinforcement layer not only has good electrical insulation performance and mechanical strength; the partition block 4 is used to separate two adjacent conductors 1 to avoid movement of the two adjacent conductors 1. Both sides of the partition block 4 are set to an arc shape that matches the insulating layer 3. When in use, the partition block 4 and the fixed block 5 are fitted with the insulating layer 3, and the positional stability between the conductors 1 is enhanced by the partition block 4 and the fixed block 5. At the same time, the partition block 4 and the fixed block 5 help to disperse the impact of the outside on the conductor 1, and effectively avoid the conductor 1 from being squeezed, deformed or displaced under external pressure. The fixed block 5 is provided with a heat dissipation hole 6, and the heat generated by the conductor 1 is dissipated through the heat dissipation hole 6 when in use.

[0023] Specifically, the protection component includes a wrapping tape 7 sleeved on the middle of the fixing block 5 , a sheath 8 is sleeved on the outside of the wrapping tape 7 , and a filler 9 for limiting the movement of the fixing block 5 and the conductor 1 is arranged inside the wrapping tape 7 .

[0024] It should be noted that the provided wrapping tape 7 is a glass fiber tape, which is wrapped around the outer wall of the fixing block 5 and the filler 9 and is used as a reinforcing material and surface protective layer of the cable. This tape wrapping structure can not only enhance the tensile strength and wear resistance of the cable, but also effectively protect the components and conductors 1 in the cable, and improve its reliability and safety performance under high temperature and harsh environmental conditions; the provided filler 9 is a glass fiber filling rope or a dust-free rock wool rope. The filling material can fill the gaps inside the cable and improve its overall structural stability and durability. In addition, it also helps to reduce stress concentration during the use of the cable, thereby extending its service life and improving its performance under various environmental conditions.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A high temperature resistant fire-resistant cable, comprising a plurality of conductors (1), characterized in that: The outer wall of the conductor (1) is provided with a fireproof layer (2), the outer wall of the fireproof layer (2) is provided with an insulating layer (3), a limiting component for limiting the movement of the conductor (1) is provided on one side of the insulating layer (3), and the outer wall of the limiting component is provided with a protective component for protecting the conductor (1); The limiting component comprises a separation block (4) symmetrically arranged on both sides of the insulating layer (3), and a plurality of fixing blocks (5) for limiting the movement of the insulating layer (3) are symmetrically fixedly connected to the top center of the separation block (4).

2. A high temperature resistant fire-resistant cable according to claim 1, characterized in that: One side of the fixing block (5) is arranged in an arc shape that matches the outer wall of the insulating layer (3).

3. A high temperature resistant fire-resistant cable according to claim 1, characterized in that: A plurality of heat dissipation holes (6) for dissipating heat are symmetrically provided in the middle of the fixing block (5).

4. A high temperature resistant fire-resistant cable according to claim 1, characterized in that: The protection component comprises a wrapping belt (7) sleeved on the middle part of the fixing block (5), and a protective sheath (8) is sleeved on the outside of the wrapping belt (7).

5. A high temperature resistant fire-resistant cable according to claim 4, characterized in that: A filler (9) for limiting the movement of the fixing block (5) and the conductor (1) is arranged inside the wrapping tape (7).

6. A high temperature resistant fire-resistant cable according to claim 1, characterized in that: The fireproof layer (2) comprises mica paper (201), glass fiber cloth (202) is symmetrically arranged on the top and bottom of the mica paper (201), and a fixing piece for fixing the position of the mica paper (201) and the glass fiber cloth (202) is arranged at the connection between the mica paper (201) and the glass fiber cloth (202).

7. A high temperature resistant fire-resistant cable according to claim 6, characterized in that: The fixing member comprises an adhesive (203) symmetrically arranged on the top and bottom of the mica paper (201), and the glass fiber cloth (202) is fixedly connected to a side of the adhesive (203) away from the mica paper (201).

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