Insulated cable bridge

Abstract

The utility model relates to electric power engineering technical field, and disclose an insulating cable bridge, this insulating cable bridge, including cable carrier, the dustproof cover is provided with on cable carrier top, and the insulating rubber pad lining for carrying out insulating protection to cable is equipped in cable carrier inside, still including waterproof steam insulation mechanism, waterproof steam insulation mechanism includes the sealed airbag ring of equidistance embedding to cable carrier both ends. Through insulating rubber pad lining realizes the insulating isolation of cable and cable carrier, avoids the leakage after cable outer insulating layer abrasion, extrusion extrusion ball can make air enter sealed airbag ring through check valve pipe, check valve pipe prevents air reverse leakage, the expansion direction of sealed airbag ring is limited by the limiting plate, makes it seal is formed to the cable and threading hole, solves the problem that traditional bridge threading gap seals badly leads to cable damp aging and dismounts complicatedly.

Description

Technical Field

[0001] This utility model relates to the field of power engineering technology, specifically to an insulated cable tray. Background Technology

[0002] In the field of power engineering technology, cable trays, as the core support equipment for power distribution systems and industrial cable laying, are widely used in factories, buildings, underground pipe corridors and other scenarios. Their main functions are to organize, support and physically protect cables, ensuring that cables are not damaged by external mechanical forces during long-term use and ensuring the stability of power transmission or signal transmission.

[0003] When cables are laid through the holes at both ends of the cable tray, a gap is formed between the hole and the outer surface of the cable. This gap is difficult to completely seal with conventional structures, especially in humid environments, rainy outdoor areas, or underground high-humidity spaces. External humid air and rainwater can easily seep into the cable tray through this gap, and long-term contact with the outer surface of the cable will accelerate the aging of the cable insulation layer. In addition, when it is necessary to adjust the position of the cable or replace the cable, the sealing components need to be disassembled with tools, which is a cumbersome operation. Therefore, there is an urgent need to develop an insulated cable tray to solve these practical problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an insulated cable tray that solves the technical problem of difficulty in sealing the gaps after cables pass through the cable tray's wiring holes, which leads to water seepage and accelerated aging of cable insulation.

[0005] To achieve the above objectives, this utility model provides an insulated cable tray through the following technical solution: an insulated cable tray, including a cable support frame, a dust cover on the top of the cable support frame, and an insulating rubber pad liner for insulating and protecting the cables on the inner side of the cable support frame.

[0006] It also includes a waterproof and vapor-insulating mechanism, which includes four sets of sealing airbag rings equidistantly embedded at both ends of the cable support frame. A three-way pipe is installed through the top of the sealing airbag ring. One end of the three-way pipe is fixedly connected to a one-way valve pipe for restricting the reverse flow of air inside the sealing airbag ring. A compression ball for providing air source is fixedly connected to the other end of the one-way valve pipe. A vent pipe is also installed through the bottom of the sealing airbag ring. Two sets of limiting plates are fixedly connected to both ends of the cable support frame for limiting the expansion direction of the sealing airbag ring.

[0007] Preferably, the one-way valve tube is a diaphragm-type one-way valve tube.

[0008] Preferably, one side of the cable support frame is also provided with two sets of storage boxes for storing the extruded balls.

[0009] Preferably, it also includes a drying assembly, which includes a placement box for holding desiccant, a breathable mesh plate for allowing drying gas to circulate, a magnet seat and a neodymium magnet for generating magnetic force between them, and a docking seat for fixing the neodymium magnet to the top of the dust cover.

[0010] Preferably, the two sets of docking seats are horizontally and correspondingly arranged on both sides of the top of the dust cover, and neodymium magnets are embedded in the top of the docking seats. A placement box is movably inserted inside the docking seat and extends into the cable carrier frame. A magnet seat corresponding to the docking seat is fixedly connected to the top of the placement box, and the magnet seat and the neodymium magnet are magnetically attracted to each other. An installation groove is also provided on the outer surface of the placement box, and a breathable mesh plate for the desiccant to perform its drying function is embedded in the installation groove.

[0011] Preferably, the docking seat is made of polyvinyl chloride to avoid the magnetic force generated by the neodymium magnet and the magnet seat affecting the normal operation of the cables inside the cable carrier.

[0012] This utility model provides an insulated cable tray. Compared with the prior art, it has the following advantages.

[0013] 1. The insulation of the cable and the cable carrier is achieved by the inner lining of the insulating rubber pad, which prevents leakage after the outer insulation layer of the cable is worn. The squeezing of the squeezing ball allows air to enter the sealing airbag ring through the one-way valve tube. The one-way valve tube prevents air leakage in the opposite direction. The limiting plate restricts the expansion direction of the sealing airbag ring, so that it fits the cable and the wire hole to form a seal, preventing external moisture from entering. The vent pipe facilitates the removal and adjustment of the cable, solving the problems of poor sealing of the wire gap in traditional cable trays, which leads to cable moisture aging and complicated disassembly and assembly.

[0014] 2. Place the desiccant into the placement box. The breathable mesh plate allows the desiccant to absorb moisture inside the cable tray while preventing desiccant particles from leaking onto the cable surface. The magnetic base and neodymium magnet work together to quickly fix the placement box, preventing it from falling off due to vibration. This solves the problems of poor moisture removal in the enclosed space of traditional cable trays and the inconvenience of maintaining the drying structure, which leads to a decline in cable insulation performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the appearance of the present utility model;

[0016] Figure 2 This is a schematic diagram showing the installation position of the insulating rubber pad liner of this utility model;

[0017] Figure 3 This is a partial assembly diagram of the waterproof vapor insulation mechanism of this utility model;

[0018] Figure 4 This is a partial schematic diagram of the drying component of this utility model;

[0019] Figure 5 This is a partial schematic diagram of the placement box of this utility model.

[0020] In the diagram: 1. Cable support frame; 101. Dust cover; 2. Water and vapor insulation mechanism; 201. Sealing airbag ring; 202. One-way valve pipe; 203. Extrusion ball; 204. Vent pipe; 205. Limiting plate; 206. Storage box; 3. Drying assembly; 301. Connecting seat; 302. Neodymium magnet; 303. Magnet seat; 304. Placement box; 305. Breathable mesh plate; 4. Insulating rubber pad liner. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0022] First implementation method:

[0023] refer to Figure 1-3 An insulated cable tray includes a cable support frame 1, a dust cover 101 on the top of the cable support frame 1, and an insulating rubber pad liner 4 for insulating and protecting the cable on the inner side of the cable support frame 1.

[0024] It also includes a waterproof and vapor-proof insulation mechanism 2, which includes sealing airbag rings 201 that are equidistantly embedded at both ends of the cable carrier frame 1, and there are four sets of sealing airbag rings 201. A three-way pipe is installed through the top of the sealing airbag ring 201. One end of the three-way pipe is fixedly connected to a one-way valve pipe 202 for restricting the reverse flow of air inside the sealing airbag ring 201. One end of the one-way valve pipe 202 is fixedly connected to a compression ball 203 that provides an air source. A vent pipe 204 is also installed through the bottom of the sealing airbag ring 201. Both ends of the cable carrier frame 1 are fixedly connected to two sets of limiting plates 205 for limiting the expansion direction of the sealing airbag ring 201.

[0025] The one-way valve tube 202 adopts a diaphragm-type one-way valve tube, and two sets of storage boxes 206 are also provided on one side of the cable carrier frame 1 for storing the extruded ball 203.

[0026] Working principle: The cable carrier frame 1 is fixed in the designated installation position, and the dust cover 101 is closed to reduce the entry of external dust. When laying the cable, the cable passes through the inside of the cable carrier frame 1. At this time, the insulating rubber pad lining 4 on the inner side of the cable carrier frame 1 directly contacts the outer surface of the cable. The high insulation of the rubber material achieves insulation isolation between the cable and the carrier frame, avoiding the risk of leakage caused by the cable's outer insulation layer coming into contact with the carrier frame after wear.

[0027] When it is necessary to seal the gap between the cable and the cable support frame 1, the cable is passed through the central hole of the four sets of sealing airbag rings 201, and the compression ball 203 is manually squeezed to allow air to enter the sealing airbag ring 201 through the one-way valve tube 202 and the three-way tube in sequence. Since the one-way valve tube 202 is a diaphragm structure, its internal diaphragm only allows air to flow into the sealing airbag ring 201 in one direction, which can prevent air from leaking back after inflation and ensure that the sealing airbag ring 201 continues to be inflated.

[0028] During the expansion of the sealing airbag ring 201, its outer side is blocked by the limiting plates 205 fixed at both ends of the cable carrier frame 1. Therefore, the expansion direction is restricted to the cable length direction, so that the inner surface of the sealing airbag ring 201 is tightly attached to the outer surface of the cable, and at the same time forms a seal with the inner wall of the cable hole of the cable carrier frame 1, realizing the isolation of water vapor at the cable insertion position, preventing external humid air and rainwater from entering the interior of the cable carrier frame 1 through the gap, and solving the problem of cable aging due to poor sealing of the cable insertion gap in traditional cable trays;

[0029] When it is necessary to disassemble or adjust the cable, open the valve of the vent pipe 204. The air in the sealed airbag ring 201 is discharged through the vent pipe 204. After the airbag contracts, the cable can be easily pulled out. When not in use, the squeeze ball 203 can be placed in the storage box 206 to prevent the squeeze ball 203 from being damaged by external force or from being inflated due to misoperation.

[0030] Second implementation method:

[0031] In the actual use of traditional insulated cable trays, due to the poor air circulation in the enclosed space, the high ambient humidity can easily cause water vapor to accumulate inside the cable tray, which in turn leads to a decrease in the insulation performance of the cable. To address this, this device is also designed with a drying component, the structure of which and its working principle are as follows.

[0032] refer to Figure 4-5 In the second embodiment of this utility model, a drying component 3 is also included. The drying component 3 includes a placement box 304 for holding desiccant, a breathable mesh plate 305 for allowing drying gas to circulate, a magnet seat 303 and a neodymium magnet 302 for generating magnetic force with each other, and a docking seat 301 for fixing the neodymium magnet 302 to the top of the dust cover 101.

[0033] Two sets of docking seats 301 are horizontally positioned on both sides of the top of the dust cover 101, and neodymium magnets 302 are embedded in the top of the docking seats 301. A placement box 304 is movably inserted inside the docking seats 301, and the placement box 304 extends into the cable support frame 1. A magnet seat 303 corresponding to the docking seat 301 is fixedly connected to the top of the placement box 304, and the magnet seat 303 and the neodymium magnet 302 are magnetically attracted to each other. An installation groove is also provided on the outer surface of the placement box 304, and a breathable mesh plate 305 for the desiccant to perform its drying function is embedded inside the installation groove.

[0034] The docking seat 301 is made of polyvinyl chloride to prevent the magnetic force generated by the neodymium magnet 302 and the magnet seat 303 from affecting the normal operation of the internal cables of the cable carrier frame 1.

[0035] Working principle: Open the bottom door of the placement box 304, put the desiccant into the placement box 304, close the door, insert the placement box 304 into the inner slot of the docking seat 301, so that the bottom of the placement box 304 extends into the cable carrier frame 1.

[0036] At this time, the magnet seat 303 on the top of the placement box 304 comes into contact with the neodymium magnet 302 on the top of the docking seat 301 and generates a magnetic attraction force. Through the magnetic force, the placement box 304 and the docking seat 301 are quickly fixed and limited, preventing the placement box 304 from falling out of the docking seat 301 due to vibration.

[0037] The desiccant placed in box 304 comes into contact with the air inside the cable carrier frame 1 through the breathable mesh plate 305 on the outer surface. The desiccant absorbs the moisture inside by utilizing its hygroscopic properties, thus keeping the inside of the cable carrier frame 1 dry. The breathable mesh plate 305 not only ensures air circulation to improve drying efficiency, but also prevents desiccant particles from leaking to the cable surface.

[0038] Because the docking seat 301 is made of polyvinyl chloride, a non-magnetic insulating material, it can block the magnetic lines of force between the neodymium magnet 302 and the magnet seat 303 from being conducted into the cable carrier frame 1, thus preventing magnetic interference with the internal cable signals. When the desiccant needs to be replaced, simply pull the placement box 304 upwards to separate the magnet seat 303 from the neodymium magnet 302, and then remove the placement box 304 for operation. Disassembly and assembly are convenient.

[0039] The drying component 3 enables continuous moisture absorption and drying of the internal space of the cable carrier frame 1, while facilitating the quick assembly and disassembly and stable positioning of the placement box 304. This avoids the decline in cable insulation performance caused by the accumulation of water vapor inside the cable carrier frame 1, and solves the technical problem in traditional insulated cable trays where water vapor is difficult to expel from the enclosed space and the drying structure is inconvenient to maintain, thus leading to a shortened cable service life.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An insulated cable tray, characterized in that: It includes a cable support frame (1), the top of which is provided with a dust cover (101), and the inner side of the cable support frame (1) is provided with an insulating rubber pad liner (4) for insulating and protecting the cable. It also includes a waterproof and vapor-proof insulation mechanism (2), which includes sealing airbag rings (201) that are equidistantly embedded at both ends of the cable support frame (1), and there are four sets of sealing airbag rings (201). A three-way pipe is installed through the top of the sealing airbag ring (201), and a one-way valve pipe (202) for restricting the reverse flow of air inside the sealing airbag ring (201) is fixedly connected to one end of the three-way pipe. A compression ball (203) for providing air source is fixedly connected to one end of the one-way valve pipe (202). A vent pipe (204) is also installed through the bottom of the sealing airbag ring (201), and two sets of limiting plates (205) for limiting the expansion direction of the sealing airbag ring (201) are fixedly connected to both ends of the cable support frame (1).

2. An insulated cable tray according to claim 1, characterized in that: The one-way valve tube (202) is a diaphragm-type one-way valve tube.

3. An insulated cable tray according to claim 1, characterized in that: Two sets of storage boxes (206) for storing the extruded balls (203) are also provided on one side of the cable support frame (1).

4. An insulated cable tray according to claim 1, characterized in that: It also includes a drying assembly (3), which includes a placement box (304) for holding desiccant, a breathable mesh plate (305) for allowing dry gas to circulate, a magnet seat (303) and a neodymium magnet (302) for generating magnetic force between each other, and a docking seat (301) for fixing the neodymium magnet (302) to the top of the dust cover (101).

5. An insulated cable tray according to claim 4, characterized in that: Two sets of docking seats (301) are respectively horizontally arranged on both sides of the top of the dust cover (101), and neodymium magnets (302) are embedded in the top of the docking seats (301). A placement box (304) is movably inserted inside the docking seats (301), and the placement box (304) extends into the cable carrier frame (1). A magnet seat (303) corresponding to the docking seat (301) is fixedly connected to the top of the placement box (304), and the magnet seat (303) and the neodymium magnet (302) are magnetically attracted to each other. An installation groove is also provided on the outer surface of the placement box (304), and a breathable mesh plate (305) for the desiccant to play a drying role is embedded in the installation groove.

6. An insulated cable tray according to claim 5, characterized in that: The docking seat (301) is made of polyvinyl chloride to avoid the magnetic force generated by the neodymium magnet (302) and the magnet seat (303) affecting the normal operation of the cable inside the cable carrier (1).

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