A fire-resistant and flame-retardant pressure-resistant cable

Abstract

The present invention relates to the field of cable technology, and proposes a fire-resistant and flame-retardant pressure-resistant cable, including a conductor, an insulating layer and an outer protective sheath, wherein a plurality of conductors and insulating layers are provided, and the conductors and insulating layers correspond to each other one by one, and the insulating layer is provided on the outside of the conductor, and also includes an outer armor layer, a partition frame, a ceramic particle filling and a fire extinguishing component, wherein the outer armor layer is provided inside the outer protective sheath, and the partition frame is provided inside the outer armor layer, and the fire extinguishing component is used to extinguish a fire when combustion occurs, and the fire extinguishing component includes a gas storage bin, and a plurality of isolation plates are provided inside the isolation cavity, which divides the interior of the isolation cavity into a staggered fire extinguishing cavity and a fireproof cavity, and the gas storage bin is located inside the fire extinguishing cavity, and the ceramic particle filling is located inside the fireproof cavity, and the gas storage bin contains fire extinguishing gas. Through the above technical scheme, the problem of the insulation layer of the cable being punctured and burned in the prior art, causing property losses and safety accidents, is solved.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and in particular to a fire-resistant and flame-retardant pressure-resistant cable. Background Art

[0002] Cables are made of one or more mutually insulated conductors and an outer insulating protective layer. They are wires that transmit electricity or information from one place to another. As cables for power transmission, especially long-distance power transmission, cables are not without resistance. During long-term transmission, they will generate heat due to the passage of current. Under high voltage conditions, the insulation layer of the cable will be punctured or even burned, causing unnecessary property losses and easily inducing fires. Therefore, we propose a fire-retardant and pressure-resistant cable to reduce overheating and combustion of the cable and prevent the spread of fire. Summary of the invention

[0003] The invention provides a fire-proof and flame-retardant pressure-resistant cable, which solves the problem in the prior art that the cable insulation layer is punctured and burned, causing property losses and safety accidents.

[0004] The technical solution of the present invention is as follows:

[0005] A fire-retardant and pressure-resistant cable, comprising a conductor, an insulating layer and an outer protective sheath, wherein a plurality of the conductor and the insulating layer are provided, the conductor and the insulating layer correspond to each other one by one, the insulating layer is provided outside the conductor, and further comprising:

[0006] An outer armor layer, the outer armor layer is arranged inside the outer protective sleeve;

[0007] A partition frame, the partition frame is arranged inside the outer armor layer, and divides the inner space of the outer armor layer into a plurality of isolation cavities, the isolation cavities correspond to the conductors one by one, the conductors are arranged inside the isolation cavities, and the partition frame is made of an inorganic hard material;

[0008] Ceramic particle filling, wherein the ceramic particle filling is arranged inside the isolation cavity and outside the insulating layer;

[0009] A fire extinguishing assembly, the fire extinguishing assembly is used to extinguish a fire when combustion occurs, and the fire extinguishing assembly comprises:

[0010] A gas storage bin is provided with a plurality of isolation plates inside the isolation cavity, which divides the interior of the isolation cavity into a fire extinguishing cavity and a fire prevention cavity which are arranged alternately. The gas storage bin is located inside the fire extinguishing cavity, and the ceramic particles are filled inside the fire prevention cavity. The interior of the gas storage bin contains fire extinguishing gas.

[0011] To further improve the independence between the cables, the separator includes:

[0012] A center seat, the center seat is located at the center of the outer armor layer;

[0013] A protection bin, wherein the protection bin is arranged on the central seat, a fan-shaped edge of the protection bin contacts an inner side wall of the outer armor layer, and a gap is provided between two adjacent protection bins;

[0014] A support block, wherein a plurality of support blocks are provided, wherein the gaps between the support blocks and the plurality of protection bins correspond one to one, wherein the support block is provided inside a gap between two adjacent protection bins, wherein the support block is provided on the center seat through a plurality of support rods, and wherein the support block contacts the inner side wall of the outer armor layer.

[0015] In order to cool down the conductor and the insulating layer, a cooling component is also included, and the cooling component is used to cool down the insulating layer. The cooling component includes:

[0016] An oil storage bin, the oil storage bin is arranged outside the outer protective cover, the oil storage bin is communicated with the fireproof cavity, and transformer oil is arranged in the oil storage bin;

[0017] A heat dissipation pipe, the heat dissipation pipe is arranged outside the oil storage tank, and the heat dissipation pipe is communicated with the oil storage tank;

[0018] A heat sink is arranged outside the heat pipe.

[0019] In order to improve the strength of the conductor and reduce the escape of fire, an inner armor layer is arranged outside the insulating layer.

[0020] In order to further improve the strength of the conductor, a plurality of support plates are arranged inside the gas storage bin, and the support plates are in contact with the inner armor layer.

[0021] The working principle and beneficial effects of the present invention are:

[0022] 1. In the present invention, ceramic particles are filled to prevent the flame of the insulating layer from spreading outward. After the insulating layer burns, the fire extinguishing gas in the gas storage bin overflows to block the flame in the fire extinguishing cavity. At the same time, a plurality of conductors are separated by a partition frame. The partition frame is made of inorganic material and is not easy to burn. After the insulating layer inside burns at high temperature, it is prevented from escaping to other conductors and causing the burning of the insulating layer.

[0023] 2. In the present invention, when the operating temperature of the conductor increases, the transformer oil in the fireproof cavity flows under the action of high temperature, and the transformer oil enters the interior of the heat dissipation pipe. The transformer oil exchanges heat with the outside through the heat dissipation pipe and the heat sink, and transfers the heat generated by the conductor to the outside, thereby cooling the conductor and the insulation layer, and reducing the burning of the insulation layer caused by the excessively high temperature of the conductor.

[0024] 3. Therefore, compared with the cables in the prior art, the present invention prevents the spread of fire in the insulation layer by filling with ceramic particles and transformer oil. At the same time, the fire extinguishing cavity separates the conductor and the insulation layer into multiple sections. After the insulation layer burns, the fire extinguishing gas in the gas storage bin is discharged to extinguish the fire, thereby preventing the fire from burning along the insulation layer. The isolation frame separates multiple conductors to prevent the fire from spreading after one conductor burns. The temperature rise of the conductor can make the transformer oil in the fireproof cavity flow. The transformer oil enters the interior of the heat dissipation pipe and dissipates heat outward through the heat dissipation pipe and the heat sink, thereby reducing the temperature of the conductor and the insulation layer and reducing the burning of the insulation layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the planar structure of the cross section of the present invention as a whole;

[0028] Figure 3 It is a schematic diagram of the structure of a partial cross-section of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the partition frame of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the fire extinguishing assembly and the protection chamber of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the fire extinguishing assembly of the present invention;

[0032] Figure 7 It is a schematic structural diagram of the cooling component of the present invention.

[0033] In the figure:

[0034] 1. Conductor; 2. Insulation layer; 3. Outer protective sheath; 4. Outer armor layer; 5. Ceramic particle filling; 6. Inner armor layer;

[0035] 101. gas storage bin; 102. isolation plate; 103. support plate;

[0036] 201, center seat; 202, protection compartment; 203, support block; 204, support rod;

[0037] 301. Oil storage tank; 302. Heat dissipation pipe; 303. Heat sink. DETAILED DESCRIPTION

[0038] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figures 1 to 7 As shown, the present embodiment proposes a fire-resistant and flame-retardant pressure-resistant cable, comprising a conductor 1, an insulating layer 2 and an outer protective sheath 3, wherein the conductor 1 and the insulating layer 2 are both provided with a plurality of conductors, the conductors 1 and the insulating layer 2 correspond one to one, and the insulating layer 2 is provided outside the conductor 1, and further comprises an outer armor layer 4, a partition frame, a ceramic particle filling 5 and a fire extinguishing assembly. Compared with the cables in the prior art, the present invention prevents the spread of fire in the insulating layer 2 by using the ceramic particle filling 5 and the transformer oil, and at the same time, the fire extinguishing cavity separates the conductor 1 and the insulating layer 2 into multiple sections. After the insulating layer 2 burns, the fire extinguishing gas in the gas storage bin 101 is discharged to extinguish the fire, thereby preventing the fire from burning along the insulating layer 2. The partition frame separates the plurality of conductors 1, thereby preventing the fire from spreading after one conductor 1 burns. The heating of the conductor 1 can cause the transformer oil in the fireproof cavity to flow, and the transformer oil enters the interior of the heat dissipation pipe 302 and dissipates heat outward through the heat dissipation pipe 302 and the heat sink 303, thereby reducing the temperature of the conductor 1 and the insulating layer 2 and reducing the burning of the insulating layer 2.

[0040] like Figures 1 to 3 As shown, the outer armor layer 4 is arranged inside the outer protective sleeve 3, and the partition frame is arranged inside the outer armor layer 4 to divide the internal space of the outer armor layer 4 into a plurality of isolation chambers. The isolation chambers correspond to the conductors 1 one by one. The conductors 1 are arranged inside the isolation chambers. The partition frame is made of inorganic hard materials, and metal materials or alloy materials can be used. The ceramic particle filling 5 is arranged inside the isolation chamber and outside the insulating layer 2. The outer armor layer 4 protects the conductors 1 and the insulating layer 2 and reduces the spread of the fire. Each conductor 1 is respectively located inside the corresponding isolation chamber, and the isolation chambers are separated by the partition frame. When the insulating layer 2 outside a conductor 1 is heated or punctured and burns, the fire is controlled inside the isolation chamber to avoid igniting the insulating layer 2 outside other conductors 1 and the outer protective sleeve 3 outside.

[0041] like Figures 4 to 6As shown, the fire extinguishing assembly is used to extinguish a fire when combustion occurs. The fire extinguishing assembly includes a gas storage bin 101. A plurality of isolation plates 102 are arranged inside the isolation cavity to divide the interior of the isolation cavity into a staggered fire extinguishing cavity and a fireproof cavity. The gas storage bin 101 is located inside the fire extinguishing cavity. The ceramic particle filling 5 is located inside the fireproof cavity. The gas storage bin 101 contains fire extinguishing gas. The fire extinguishing gas can be selected from carbon dioxide, nitrogen or inert gas, etc. The isolation plate 102 divides the cable into multiple sections. The side of the gas storage bin 101 in contact with the insulating layer 2 is set to an open shape. After the insulating layer 2 is heated and burned, the gas storage bin 101 will be opened. 01 overflows. After the fire enters the fire extinguishing chamber, the oxygen content in the fire extinguishing chamber is low, the fire extinguishing gas content is high, and the combustion conditions are insufficient, thereby blocking the fire in the insulating layer 2 and preventing the flame from burning along the insulating layer 2. In order to further improve the strength of the conductor 1, a plurality of support plates 103 are arranged inside the gas storage bin 101. The support plates 103 are in contact with the inner armor layer 6. The gas storage bin 101 is supported by the support plates 103, and the partition frame and the outer armor layer 4 are supported by the gas storage bin 101, thereby enhancing the compressive strength of the cable and improving the strength of the gas storage bin 101 itself.

[0042] like Figure 4 As shown, in order to further improve the independence between the cables, the partition frame includes a central seat 201, a protective compartment 202 and a support block 203. The central seat 201 is located at the center of the outer armor layer 4. The protective compartment 202 is arranged on the central seat 201. The fan-shaped edge of the protective compartment 202 contacts the inner side wall of the outer armor layer 4. There is a gap between two adjacent protective compartments 202. A plurality of support blocks 203 are arranged. The gaps between the support blocks 203 and the plurality of protective compartments 202 correspond to each other one by one. The support blocks 203 are arranged between two adjacent protective compartments 202. Inside the gap between them, the support block 203 is arranged on the center seat 201 through multiple support rods 204. The support block 203 contacts the inner wall of the outer armor layer 4. There is a gap between the protection compartments 202, which further improves the separation effect between the conductors 1, avoids mutual influence between the conductors 1, and prevents the spread of fire. The center seat 201, support rods 204 and support blocks 203 ensure that the gaps between the multiple protection compartments 202 are stable, and at the same time cooperate with the protection compartments 202 to support the outer armor layer 4 and ensure the compression resistance of the cable.

[0043] like Figure 1 and Figure 7As shown, in order to cool down the conductor 1 and the insulating layer 2, a cooling component is also included. The cooling component is used to cool down the insulating layer 2. The cooling component includes an oil storage bin 301, a heat dissipation pipe 302 and a heat sink 303. The oil storage bin 301 is arranged outside the outer protective cover 3. The oil storage bin 301 is connected to the fireproof cavity through an oil inlet pipe and an oil outlet pipe. Transformer oil is arranged in the oil storage bin 301. The heat dissipation pipe 302 is arranged outside the oil storage bin 301. The heat dissipation pipe 302 is connected to the oil storage bin 301. The heat sink 303 is arranged outside the heat dissipation pipe 302. When the temperature of the conductor 1 rises, the transformer oil in the protective layer is heated to make the transformer oil flow. Alternatively, when the cable moves, rolls or bends, the transformer oil will also flow. The transformer oil in the protective layer enters the interior of the heat dissipation pipe 302, and dissipates heat to the outside through the heat dissipation pipe 302 and the heat sink 303, so that the temperature of the transformer oil is reduced, thereby achieving cooling and heat dissipation of the conductor 1 and the insulating layer 2, and reducing the heat combustion phenomenon of the insulating layer 2.

[0044] like Figure 1 to Figure 2 As shown, in order to improve the strength of the conductor 1 and reduce the escape of fire, an inner armor layer 6 is provided on the outside of the insulating layer 2. The inner armor layer 6 can protect the conductor 1 and the insulating layer 2 to improve their bending and compressive strength. At the same time, the inner armor layer 6 can be provided with a layer of flame retardant material on the outside of the insulating layer 2 to reduce the flame extension after the burning of the insulating layer 2, thereby reducing the fire.

[0045] The working principle or use process of the fire-retardant pressure-resistant cable is as follows:

[0046] During the operation of the cable, the conductor 1 generates heat, and the transformer oil in the fireproof cavity flows to the inside of the oil storage tank 301 and enters the heat dissipation pipe 302. The transformer oil dissipates heat to the outside through the heat dissipation pipe 302 and the heat sink 303, thereby dissipating heat to the conductor 1 and the insulating layer 2, reducing the phenomenon of the insulating layer 2 being burned by heat.

[0047] When the insulating layer 2 burns, the inner armor layer 6 blocks the flame, and the ceramic particle filling 5 blocks the flame. At the same time, when the insulating layer 2 burns into the fire extinguishing cavity, the fire extinguishing gas in the gas storage bin 101 is discharged to prevent the flame from burning. The partition frame separates the conductor 1 and controls the fire inside the isolation cavity to avoid ignition between multiple insulating layers 2.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fire-resistant and flame-retardant pressure-resistant cable, comprising a conductor (1), an insulating layer (2) and an outer protective sheath (3), wherein a plurality of the conductor (1) and the insulating layer (2) are provided, the conductor (1) and the insulating layer (2) are in one-to-one correspondence, and the insulating layer (2) is provided outside the conductor (1), characterized in that: Also includes: An outer armor layer (4), the outer armor layer (4) being arranged inside the outer protective sleeve (3); a partition frame, the partition frame being arranged inside the outer armor layer (4) and dividing the internal space of the outer armor layer (4) into a plurality of isolation chambers, the isolation chambers corresponding to the conductors (1) one by one, the conductors (1) being arranged inside the isolation chambers, the partition frame being made of an inorganic hard material; Ceramic particle filling (5), the ceramic particle filling (5) being arranged inside the isolation cavity and outside the insulating layer (2); A fire extinguishing assembly, the fire extinguishing assembly is used to extinguish a fire when combustion occurs, and the fire extinguishing assembly comprises: A gas storage bin (101), wherein a plurality of isolation plates (102) are arranged inside the isolation cavity, and the interior of the isolation cavity is divided into a fire extinguishing cavity and a fire prevention cavity which are arranged alternately, the gas storage bin (101) is located inside the fire extinguishing cavity, the ceramic particle filling (5) is located inside the fire prevention cavity, and the gas storage bin (101) contains fire extinguishing gas; The partition frame comprises: A central seat (201), the central seat (201) being located at a central position of the outer armor layer (4); A protection bin (202), the protection bin (202) being arranged on the central seat (201), the fan-shaped edge of the protection bin (202) being in contact with the inner side wall of the outer armor layer (4), and a gap being provided between two adjacent protection bins (202); A support block (203), wherein a plurality of the support blocks (203) are provided, and the gaps between the support blocks (203) and the plurality of the protection bins (202) correspond one to one, and the support block (203) is provided inside the gap between two adjacent protection bins (202), and the support block (203) is provided on the center seat (201) via a plurality of support rods (204), and the support block (203) is in contact with the inner side wall of the outer armor layer (4).

2. The fire-retardant pressure-resistant cable according to claim 1, characterized in that: It also includes a cooling component, which is used to cool the insulation layer (2), and the cooling component includes: An oil storage bin (301), the oil storage bin (301) being arranged outside the outer protective cover (3), the oil storage bin (301) being in communication with the fireproof cavity; A heat dissipation pipe (302), the heat dissipation pipe (302) being arranged outside the oil storage bin (301), the heat dissipation pipe (302) being in communication with the oil storage bin (301); A heat sink (303), wherein the heat sink (303) is arranged outside the heat dissipation pipe (302).

3. The fire-retardant pressure-resistant cable according to claim 2, characterized in that: An inner armor layer (6) is arranged outside the insulating layer (2).

4. The fire-retardant pressure-resistant cable according to claim 3, characterized in that: A plurality of support plates (103) are arranged inside the gas storage bin (101), and the support plates (103) are in contact with the inner armor layer (6).

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