CN203707676U - Isolation net for replacement of high voltage iron tower lightning wire or composite ground wire - Google Patents

Abstract

The utility model discloses an isolation net for replacement of a high-voltage iron tower lightning protection wire or a composite ground wire, which is characterized in that it comprises two hooking devices and two parallel insulating load-bearing ropes, the left section and the right section of the insulating load-bearing rope are respectively Hanging on two hooks, a row of insulated connecting ropes is evenly arranged between the two insulated load-bearing ropes. The two ends of the rod are respectively fixed on two insulated load-bearing ropes. and fixtures. The utility model is an isolation net for replacement of a lightning protection wire or a composite ground wire of a high-voltage iron tower, which isolates the lightning protection wire (or composite ground wire) from the power line, prevents safety problems caused by the line being placed on the power line during the replacement process, and does not need to be powered off to replace the lightning protection line, reducing energy loss and economic loss for users.

Description

Isolation net for replacement of lightning protection wire or composite ground wire of high voltage iron tower

technical field

The utility model belongs to the technical field of replacement and installation of lightning protection wires or composite ground wires, and in particular relates to an isolation net for replacing lightning protection wires or composite ground wires of high-voltage iron towers.

Background technique

The lightning protection wire on the high-voltage tower is easy to be damaged, especially in the summer when there are many stormy weather, the damage rate of the lightning protection wire is more frequent, and it needs to be replaced urgently. replaced, and the composite ground wire has the same problem.

In the traditional replacement of lightning protection wires or composite ground wires, because the wires are easy to swing during the wire replacement process and will be placed on the wires, it is impossible to implement the line without power failure. It will bring a lot of loss. The power failure loss of the line with high voltage level is greater. Although the power failure loss of the low voltage line is small, it may encounter very important users at any time and cannot be powered off. A power outage will bring great losses to users, and may even have a great impact on society. The loss of power outages is not entirely the loss of power companies. Often, the losses caused by power outages to users are dozens of times or hundreds of times greater than the losses of power companies. . Even if it is considered to use the traditional spanning frame to solve the problem, a small amount of power outage is required, and it is unsafe, and the construction is difficult, especially on high-level voltage lines, which is not easy to implement and unsafe, and the cost is high, and it takes time long, is not feasible. In order to facilitate the replacement of lightning conductors or composite ground wires without affecting customers' electricity demand, we urgently need to find a new method for replacing lightning conductors or composite ground wires without power failure.

Insufficiency of the existing technology: it is necessary to replace the lightning conductor or composite ground wire in a power outage, which wastes energy and causes great economic losses to users.

Utility model content

The purpose of the utility model is to provide a high-voltage iron tower lightning protection wire or composite ground wire replacement isolation net, and the power line can be replaced without power failure.

The purpose of this utility model is achieved in the following way: an isolation net for replacement of a high-voltage iron tower lightning protection wire or a composite ground wire. and the right section are respectively hung on the two hooking devices, a row of insulating connecting ropes is evenly arranged between the two insulating load-bearing ropes, and the two ends of the insulating connecting ropes are respectively fixedly connected with the two insulating load-bearing ropes, The insulating connecting rope is located between the hooking devices, a row of struts is arranged between the two insulating load-bearing ropes, and the two ends of the struts are respectively fixed on the two insulating load-bearing ropes. Located between the hooking devices; both ends of the insulating load-bearing rope are provided with a fixing device and a tightening device, and the tightening device is located between the hooking device and the fixing device.

With the above structure, the insulated connecting rope and the insulated load-bearing rope form a mesh structure, and the braces spread the load-bearing rope to ensure that the load-bearing rope will not be retracted. Isolate from the power line, separate the construction part from the live part, and keep a safe distance. When replacing the lightning protection line, the lightning protection line will not be placed on the power line, so there is no need to cut off the power to replace the lightning protection line (or composite ground wire), which is convenient and effective , greatly reducing energy loss and economic loss of users.

The above-mentioned hooking device includes a fixed rod, fixed pulleys are fixed at both ends of the fixed rod, the fixed rod is fixed on the high-voltage iron tower, and the two insulating load-bearing ropes are respectively hung on the two fixed pulleys.

With the above structure, the fixed rod facilitates the fixing of the fixed pulley, and the fixed pulley facilitates the pulling of the insulating load-bearing rope. At the same time, the width of the isolation net is increased to reach or exceed the maximum distance between the power lines on the same horizontal plane, so as to isolate and protect the normal operation of the power lines.

The above-mentioned tightening device is a hand hoist, and the hand hoist is close to the fixing device.

With the above structure, the hand hoist is easy to install, and easy to take up and tighten the wire.

The above-mentioned fixing device is a ground anchor, and the end of the insulating load-bearing rope is fixed on the ground anchor.

With the above structure, the insulated load-bearing rope is fixed to the ground through ground anchors, which is more stable.

The above struts are made of epoxy resin, the fixing rods are made of aluminum alloy, and the insulated load-bearing ropes and insulated connecting ropes are both Dyneema ropes.

With the above-mentioned structure, the fixed rod made of aluminum alloy is light, easy to transport it to the high-voltage iron tower, and has high strength and durability; while the support rod made of epoxy resin is light in weight, and its hardness can also meet the supporting function, which reduces the weight of the insulating load-bearing rope. The load-bearing; Dyneema rope has high stress strength, insulation strength and wear resistance, high tensile strength, which is 15 times that of high-quality steel, small elongation, and light weight, which is one-seventh of steel with the same diameter. It can float on the water surface and has good flexibility.

Beneficial effects: the utility model is an isolation net for replacement of a lightning protection wire or a composite ground wire of a high-voltage iron tower. The lightning protection line and the power line are isolated through the isolation net, and a safe distance is always maintained, which can prevent the lightning protection line from being placed on the power line during the replacement process, causing Safety issues, there is no need to cut off the power to replace the lightning conductor, which reduces energy loss and economic loss for users.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Below in conjunction with embodiment and accompanying drawing, the utility model is further described.

As shown in Figure 1: an isolation net for replacement of a high-voltage iron tower lightning protection wire or a composite ground wire, consisting of two hooks and two parallel insulating load-bearing ropes 1, the left and right sections of the insulating load-bearing rope 1 respectively hung on the two hitch devices, a row of insulated connecting ropes 2 is evenly arranged between the two insulated load-bearing ropes 1, and the two ends of the insulated connecting ropes 2 are respectively fixedly connected to the two insulated load-bearing ropes 1, The insulated connecting rope 2 is located between the hooking devices, a row of struts 3 is arranged between the two insulated load-bearing ropes 1, and the two ends of the struts 3 are respectively fixed on the two insulated load-bearing ropes 1, The strut 3 is located between the hooking devices; the two ends of the insulating load-bearing rope 1 are provided with a fixing device 4 and a tightening device 5, and the tightening device 5 is located between the hooking device and the fixing device 4 between. The tightening device 5 is a hand hoist, which is close to the fixing device 4; the fixing device 4 is a ground anchor, and the end of the insulating load-bearing rope 1 is fixed on the ground anchor; 3 is made of epoxy resin to prevent the insulating load-bearing rope 1 from closing the waist. The epoxy resin is lighter in weight and reduces the load bearing of the insulating load-bearing rope 1. The insulating load-bearing rope 1 and the insulating connecting rope 2 are both Dyneema ropes.

The hooking device includes a fixed rod 6, and the length of the fixed rod 6 must reach or exceed the maximum distance between the power lines on the same level, thereby increasing the width of the isolation net to reach or exceed the maximum distance between the power lines on the same level, so as to isolate and protect the electric power normal operation of the line. The fixed rod 6 is made of aluminum alloy, fixed pulleys 7 are fixed at both ends of the fixed rod 6, the fixed rod 6 is fixed on the high-voltage iron tower, and the two insulating load-bearing ropes 1 are respectively hung on two On the fixed pulley 7.

The operating principle of the utility model: first, fix the hooking device on the high-voltage iron tower. When replacing the lightning protection line, the hooking device is located below the lightning protection line and above the power line. When replacing the composite ground wire, the hooking device is located Under the composite ground wire and above the power line, hang the insulated load-bearing rope between the two high-voltage iron towers, weave the insulated connecting rope between the two insulated load-bearing ropes between the two high-voltage iron towers and fix the pole, and move the load-bearing while weaving the isolation net The rope makes it form a mesh structure, covering the entire power line area, and then fix the ground anchors at both ends of the load-bearing rope, straighten and tighten the insulated load-bearing rope through the hand hoist, and isolate the lightning protection line from the power line to maintain a safe distance. Prevent the lightning conductor from swinging during the replacement process and overlap the power line, causing safety problems, so as to achieve the purpose of replacing the lightning conductor without power failure.

Claims (5)

1. An isolation net for replacement of a high-voltage iron tower lightning protection wire or a composite ground wire, characterized in that it includes two hooking devices and two parallel insulating load-bearing ropes (1), the left section of the insulating load-bearing rope (1) and The right section is respectively hung on the two hooking devices, and a row of insulating connecting ropes (2) is evenly arranged between the two insulating load-bearing ropes (1), and the two ends of the insulating connecting ropes (2) are connected with the two An insulated load-bearing rope (1) is fixedly connected, the insulated connecting rope (2) is located between the hitch devices, and a row of braces (3) is arranged between the two insulated load-bearing ropes (1). The two ends of the rod (3) are respectively fixed on the two insulated load-bearing ropes (1), and the braces (3) are located between the hooks; the two ends of the insulated load-bearing rope (1) are set There are fixing means (4) and tightening means (5), which are located between said hitch means and fixing means (4). 2. The isolation net for replacement of high-voltage iron tower lightning protection wires or composite ground wires according to claim 1, characterized in that: the hooking device includes a fixed rod (6), and both ends of the fixed rod (6) are fixedly arranged There is a fixed pulley (7), the fixed rod (6) is fixed on the high-voltage iron tower, and the two insulating load-bearing ropes (1) are respectively hung on the two fixed pulleys (7). 3. The isolation net for replacement of high-voltage iron tower lightning protection wires or composite ground wires according to claim 1 or 2, characterized in that: the tightening device (5) is a hand hoist, and the hand hoist is close to the fixing device (4 ). 4. The isolation net for replacement of lightning protection wires or composite ground wires for high-voltage iron towers according to claim 3, characterized in that: the fixing device (4) is a ground anchor, and the end of the insulating load-bearing rope (1) is fixed on on the ground anchor. 5. The isolation net for replacement of high-voltage iron tower lightning protection wires or composite ground wires according to claim 4, characterized in that: the support rod (3) is made of epoxy resin, and the fixing rod (6) is made of aluminum alloy The insulated load-bearing rope (1) and the insulated connecting rope (2) are both Dyneema ropes.