Fire-fighting cable for high-speed rail transit

Abstract

The utility model relates to the technical field of cables, and discloses a fire-fighting cable for high-speed rail transit, which comprises a protective sleeve assembly, a fastening connection assembly is fixedly mounted at the front end of the protective sleeve assembly, and a conductor assembly is fixedly mounted in the protective sleeve assembly. According to the utility model, the fastening connection assembly is arranged on the device, so that when the device is used and the device is connected with other connecting lines, the fastening connection assembly can be used for connecting and installing more conveniently; certain influence on connection caused by internal power line forking is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of cables, specifically a fire-fighting cable for high-speed rail transit. Background Technology

[0002] In high-speed rail transit systems, cables serve as crucial carriers of electrical energy and signal transmission, making their safety and reliability paramount. Due to the complex environment and dense cable laying in rail transit systems, fires can spread rapidly and are extremely difficult to extinguish. In fires, the insulation and sheathing materials of traditional cables are easily ignited, not only escalating the fire but also potentially damaging control circuits of fire-fighting equipment, signal transmission lines of automatic fire alarm systems, fire broadcast lines, and fire telephone lines, severely delaying rescue efforts and causing significant loss of life and property. Furthermore, the burning of electrical wires and cables is characterized by its insidious nature, rapid spread, and highly toxic smoke, which is extremely detrimental to fire prevention and control. With the rapid development of rail transit, the requirements for fire-resistant cables that ensure continuous power supply for fire suppression systems are constantly increasing. Existing ordinary cables can no longer meet these stringent requirements; therefore, there is an urgent need for a high-performance fire-fighting cable for high-speed rail transit to ensure the normal operation of fire-fighting equipment in extreme situations such as fires, buying valuable time for personnel evacuation and rescue operations.

[0003] Application number CN202222795222.X discloses a fire-fighting cable, including a control core and multiple power cores. The control core and power cores are twisted together to form a cable core. The control core includes a first core located at the center of the cable core and a second core located on the outer periphery of the first core. The power cores are coaxially arranged with the control core. Multiple power cores are arranged circumferentially around the outer periphery of the first core. The second cores are located between adjacent power cores. Insulating fillers are provided between the first and second cores, between the first core and the power core, and between the second core and the control core. The insulation of this fire-fighting cable... The filler improves fire resistance and ensures the integrity of the fire-fighting cable, meeting fire protection requirements. The control core provides power to equipment such as signs and warning lights, while the power core provides continuous power to fire-fighting equipment such as sprinkler systems and rescue equipment. This fire-fighting cable reduces the number of cables to be laid, is highly flexible, and is easy to lay. However, it has a drawback: when the device needs to be connected to other connecting lines, the forked and scattered wires need to be further wrapped with insulating tape, which makes the connection work somewhat inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a fire-fighting cable for high-speed rail transit, which solves the problem that when the device needs to be connected to other connecting lines, the forked and scattered wires need to be further wrapped with insulating tape, which makes the corresponding connection work of the device inconvenient.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a fire-fighting cable for high-speed rail transit, including a protective sleeve assembly. A fastening connection assembly is fixedly installed at the front end of the protective sleeve assembly, and a conductor assembly is fixedly installed inside the protective sleeve assembly.

[0007] The fastening connection assembly includes a silicone support sleeve, with a heat dissipation hole on the outer side of the tail end of the silicone support sleeve, and a fastening assembly fixedly installed at the front end of the silicone support sleeve.

[0008] Furthermore, the protective sleeve assembly includes a waterproof material layer, and a shielding material layer is fixedly installed inside the waterproof material layer. A positioning spacer is correspondingly provided around the inside of the shielding material layer.

[0009] Furthermore, the silicone support sleeve is positioned and installed on the outside of the waterproof material layer.

[0010] Furthermore, the conductor assembly includes a mica tape material layer, which is positioned and installed inside the shielding material layer, and a PVC material layer is fixedly installed inside the mica tape material layer, and a metal conductor is fixedly installed inside the PVC material layer.

[0011] Furthermore, the waterproof material layer includes a waterproof membrane, the waterproof membrane having a waterproof sealant fixedly installed inside, and the waterproof sealant having a waterproof coating fixedly installed inside.

[0012] Furthermore, the fastening assembly includes an expansion mounting tube, a fastening nut is installed at the outer end of the expansion mounting tube, and the expansion mounting tube is installed on the outer side of the waterproof material layer. At the same time, a compression nut is installed at the outer end of the front end of the expansion mounting tube, and a silicone open ring is fixedly installed at the front end of the compression nut.

[0013] Furthermore, the inner wall of the front end of the expansion mounting tube is fixedly installed with an anti-slip inner wall.

[0014] This utility model has the following beneficial effects:

[0015] (1) The fire-fighting cable for high-speed rail transit of this utility model has a fastening connection component installed on the device, which makes it more convenient to connect with other connecting lines when using this device, and avoids the internal power line from being severely forked and further affecting the connection.

[0016] (2) The fire-fighting cable for high-speed rail transit of this utility model has a positioning spacer installed between the conductor components in the device, which makes the internal conductor components more stable when the device is used, and avoids internal entanglement and other situations.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of a fire-fighting cable for high-speed rail transit according to this utility model;

[0020] Figure 2 This is a cross-sectional internal structure diagram of a fire-fighting cable for high-speed rail transit according to this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of a fire-fighting cable fastening assembly for high-speed rail transit according to the present invention;

[0022] Figure 4 This is a schematic diagram of the material structure of a waterproof material layer for a fire-fighting cable used in high-speed rail transit according to this utility model;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] In the diagram: 1. Protective sleeve assembly; 2. Fastening connection assembly; 3. Conductor assembly; 101. Waterproof material layer; 102. Shielding material layer; 103. Positioning spacer; 201. Silicone support sleeve; 202. Heat dissipation hole; 203. Fastening assembly; 301. Mica tape material layer; 302. PVC material layer; 303. Metal conductor; 1011. Waterproof membrane; 1012. Waterproof sealant; 1013. Waterproof coating; 2031. Expansion mounting tube; 2032. Fastening nut; 2033. Compression nut; 2034. Silicone open ring; 2035. Anti-slip inner wall. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-4 As shown, this utility model is a fire-fighting cable for high-speed rail transit, including a protective sleeve assembly 1, a fastening connection assembly 2 fixedly installed at the front end of the protective sleeve assembly 1, and a conductor assembly 3 fixedly installed inside the protective sleeve assembly 1.

[0027] The fastening connection assembly 2 includes a silicone support sleeve 201, with a heat dissipation hole 202 on the outer side of the tail end of the silicone support sleeve 201, and a fastening assembly 203 fixedly installed at the front end of the silicone support sleeve 201.

[0028] By installing the fastening connection component 2 on the device, when using this device and connecting it with other connecting cables, the fastening connection component 2 makes the connection and installation more convenient and avoids severe internal power cable splitting, which could further affect the connection.

[0029] The protective sleeve assembly 1 includes a waterproof material layer 101, inside which a shielding material layer 102 is fixedly installed. Positioning spacers 103 are correspondingly arranged around the inside of the shielding material layer 102. The waterproof membrane 1011, waterproof sealant 1012, and waterproof coating 1013 in the waterproof material layer 101 work together to form a multi-layered waterproof structure, preventing moisture from penetrating the cable and protecting the conductor assembly 3. The shielding material layer 102 can shield against external electromagnetic interference, ensuring the stability of signal and power transmission in the cable. The positioning spacers 103 stably position the conductor assembly 3 inside the shielding material layer 102, preventing damage to the internal structure due to shaking or other factors.

[0030] The silicone support sleeve 201 is installed on the outside of the waterproof material layer 101.

[0031] Conductor assembly 3 includes a mica tape layer 301, which is installed inside the shielding layer 102. A PVC layer 302 is fixedly installed inside the mica tape layer 301, and a metal conductor 303 is fixedly installed inside the PVC layer 302. The metal conductor 303, as the core conductive component, achieves stable current transmission under the insulation protection of the PVC layer 302. The high-temperature resistance and flame-retardant properties of the mica tape layer 301 ensure that the metal conductor 303 can maintain normal conductivity for a certain period of time in special circumstances such as fires, providing power support for fire emergencies.

[0032] The waterproof material layer 101 includes a waterproof membrane 1011, a waterproof sealant 1012 is fixedly installed inside the waterproof membrane 1011, and a waterproof coating 1013 is fixedly installed inside the waterproof sealant 1012.

[0033] The fastening assembly 203 includes an expansion mounting tube 2031, a fastening nut 2032 is installed at the outer end of the expansion mounting tube 2031 and the expansion mounting tube 2031 is installed at the outer side of the waterproof material layer 101, and a compression nut 2033 is installed at the outer front end of the expansion mounting tube 2031, and a silicone open ring 2034 is fixedly installed at the front end of the compression nut 2033.

[0034] Therefore, the inner wall of the front end of the expansion mounting tube 2031 is fixedly equipped with an anti-slip inner wall 2035, and the heat dissipation hole 202 on the outer side of the tail end of the silicone support sleeve 201 can dissipate the heat generated by the cable during operation in a timely manner, preventing the cable temperature from becoming too high due to heat accumulation, which would affect its performance and service life. The expansion mounting tube 2031 in the fastening assembly 203 achieves a tight and stable connection with other components or equipment through the cooperation of the fastening nut 2032 and the compression nut 2033, as well as the sealing effect of the silicone open ring 2034. The anti-slip inner wall 2035 on the inner wall of the front end of the expansion mounting tube 2031 further enhances the firmness of the connection and prevents the connection from loosening due to vibration and other factors during high-speed rail operation.

[0035] Fire-fighting cables for high-speed rail transit primarily rely on the coordinated operation of various components to achieve functions such as power transmission, protection, and connection. The metal conductor 303, as the core conductive component, achieves stable current transmission under the insulation protection of the PVC material layer 302. The high-temperature resistance and flame-retardant properties of the mica tape material layer 301 ensure that the metal conductor 303 can maintain normal conductivity for a certain period of time in special circumstances such as fires, providing power support for fire emergencies. The waterproof material layer 101, consisting of the waterproof membrane 1011, waterproof sealant 1012, and waterproof coating 1013, works together to form a multi-layered waterproof structure, preventing moisture from penetrating the cable and protecting the conductor assembly 3. The shielding material layer 102 shields against external electromagnetic interference, ensuring the stability of signal and power transmission. The positioning spacer 103 stably positions the conductor assembly 3 inside the shielding material layer 102, preventing damage to the internal structure due to shaking, etc. The heat dissipation hole 202 on the outer side of the end of the silicone support sleeve 201 can dissipate the heat generated by the cable during operation in a timely manner, preventing the cable temperature from becoming too high due to heat accumulation, which would affect its performance and service life. The expansion mounting tube 2031 in the fastening assembly 203 achieves a tight and stable connection with other components or equipment through the cooperation of the fastening nut 2032, the compression nut 2033, and the sealing effect of the silicone open ring 2034.The anti-slip inner wall 2035 of the expansion mounting tube 2031 further enhances the connection's firmness, preventing loosening due to vibration or other factors during high-speed rail operation. The silicone support sleeve 201 is fixedly installed on the outside of the waterproof material layer 101. The fastening assembly 2 is fixedly connected to the front end of the protective sleeve assembly 1 via the expansion mounting tube 2031, fastening nut 2032, compression nut 2033, and silicone open ring 2034 in the fastening assembly 203, ensuring a firm and well-sealed connection. The mica tape material layer 301 is fixedly installed inside the shielding material layer 102. Inside the mica tape material layer 301, the PVC material layer 302 and the metal conductor 303 are sequentially installed. The conductor assembly 3 is stably positioned inside the protective sleeve assembly 1 by the positioning spacer 103. When the cable is connected to the circuit, the metal conductor 303 begins to transmit current, and the PVC... Material layer 302 serves as insulation to prevent current leakage; mica tape material layer 301 protects metal conductor 303 under normal and special high-temperature environments, maintaining power transmission; during cable operation, the waterproof material layer 101's waterproof roll 1011, waterproof sealant 1012, and waterproof coating 1013 work together to prevent moisture intrusion; shielding material layer 102 shields against external electromagnetic interference; the heat dissipation hole 202 at the tail end of the silicone support sleeve 201 dissipates the heat generated by the cable in a timely manner, ensuring that the cable operates at a suitable temperature; during high-speed rail transit operation, the fastening connection assembly 2 is checked regularly, and the tightness of the expansion mounting tube 2031 is adjusted by the fastening nut 2032 and the compression nut 2033 to ensure a firm connection; if problems such as aging of the silicone open ring 2034 are found, it should be replaced in time to maintain the sealing and stability of the cable connection.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fire-fighting cable for high-speed rail transit, comprising a protective sheath assembly (1), characterized in that: The front end of the protective sleeve assembly (1) is fixedly installed with a fastening connection assembly (2), and the inside of the protective sleeve assembly (1) is fixedly installed with a conductor assembly (3). The fastening connection assembly (2) includes a silicone support sleeve (201), with a heat dissipation hole (202) on the outer side of the tail end of the silicone support sleeve (201), and a fastening assembly (203) is fixedly installed at the front end of the silicone support sleeve (201).

2. The fire-fighting cable for high-speed rail transit according to claim 1, characterized in that: The protective sleeve assembly (1) includes a waterproof material layer (101), and a shielding material layer (102) is fixedly installed inside the waterproof material layer (101). A positioning spacer (103) is provided around the inside of the shielding material layer (102).

3. A fire-fighting cable for high-speed rail transit according to claim 1, characterized in that: The silicone support sleeve (201) is positioned and installed on the outside of the waterproof material layer (101).

4. A fire-fighting cable for high-speed rail transit according to claim 1, characterized in that: The conductor assembly (3) includes a mica tape material layer (301), which is installed inside the shielding material layer (102). A PVC material layer (302) is fixedly installed inside the mica tape material layer (301), and a metal conductor (303) is fixedly installed inside the PVC material layer (302).

5. A fire-fighting cable for high-speed rail transit according to claim 2, characterized in that: The waterproof material layer (101) includes a waterproof membrane (1011), a waterproof sealant (1012) is fixedly installed inside the waterproof membrane (1011), and a waterproof coating (1013) is fixedly installed inside the waterproof sealant (1012).

6. A fire-fighting cable for high-speed rail transit according to claim 1, characterized in that: The fastening assembly (203) includes an expansion mounting tube (2031), a fastening nut (2032) is installed at the outer end of the expansion mounting tube (2031), and the expansion mounting tube (2031) is installed at the outer side of the waterproof material layer (101). At the same time, a compression nut (2033) is installed at the outer front end of the expansion mounting tube (2031), and a silicone open ring (2034) is fixedly installed at the front end of the compression nut (2033).

7. A fire-fighting cable for high-speed rail transit according to claim 6, characterized in that: Therefore, the inner wall of the front end of the expansion mounting tube (2031) is fixedly installed with an anti-slip inner wall (2035).

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