CN103066526B - A kind of ground connection line method and separated earthing instrument for ultra-high-tension power transmission line - Google Patents

Abstract

The invention relates to the technical field of transmission line maintenance, in particular to a grounding wire method and an isolated grounding tool for high-voltage transmission lines for transmission line maintenance. The isolated grounding tool used in the grounding wire method includes: a grounding lead card, an L-shaped screw joint, a screw operating chuck, and an operating rod. The grounding lead card is provided with a screw connected to the L-shaped screw joint thread. The other end of the L-shaped screw joint is connected with the screw operating chuck; the other end of the screw operating chuck is buckled connected with the operating rod. The invention can make the operator who installs the grounding wire neither touch the annealed copper wire nor climb out of the insulator, and can also control the hanging point of the chuck on the wire, so that "wherever it points, hang the grounding wire on the "Where" is convenient, fast, safe and reliable for operators. The work load of the staff is greatly reduced, the work quality of the ground wire is guaranteed, the work time is greatly shortened, and the work efficiency is improved.

Description

A grounding wire method and isolated grounding tool for high-voltage transmission lines

technical field

The invention relates to the technical field of transmission line maintenance, in particular to a grounding wire method and an isolated grounding tool for high-voltage transmission lines for transmission line maintenance.

Background technique

At present, when working on power lines, in order to ensure safety, technical measures such as power outage, power inspection, installation of grounding wires, use of personal security wires, warning signs and installation of barriers must be strictly implemented. Safety plays a vital role.

In the 110KV and 220KV transmission lines, the crocodile-mouth type grounding wires are currently used, and the middle is connected by a wire and an insulating operation rope. When this kind of grounding wire is used, the staff connects one end of the tower with the tower body, and the other end needs to open the bayonet of the grounding wire, hold the rope body on the grounding wire to vertically connect the bayonet to the wire, and use the self-weight of the grounding wire to drop On the wire and clamp the wire, this kind of grounding wire seems reasonable, convenient and safe, but the following problems are found through actual operation:

(1) It is not easy to operate on the tower, and the work intensity of the operator is greatly increased on the tower.

The grounding wire can't just touch the wire, it has to rely on the self-weight of the wire chuck to clamp the wire at the moment of vertical fall, which requires the operator to drop the chuck on the wire like a vertical needle drop hole and put the tensioner into place. The operation can be completed only when the open-mouthed chuck clamps the wire accurately. When working on poles and towers, the wires are often far away from the operating point of the staff. The vertical distance between the 110KV wires and the operating point is more than 1700mm. For the suspended wires that swing irregularly in the air, the staff cannot control the clamping of the grounding wire at all. direction in the air.

On the strain tower, the 220KV line anti-inner angle drainage line is not only more than 3000mm away from the operating point, but also not at a perpendicular angle to the operating point. The staff cannot correctly install the grounding line on the drainage line. Weather, this kind of wire-operated grounding wire is blown away from the hanging point, and it is more difficult for the staff to operate. Often the staff has to climb out of the insulator, sit on the wire and hold the wire chuck to install the grounding wire. It is said that the work intensity has been greatly increased. Just hanging the ground wire before work is a safety technical measure that is time-consuming and labor-intensive, which delays normal working hours.

(2) It does not meet the requirements of safety regulations when used, and has serious potential safety hazards.

(1) When installing the grounding wire, the human body cannot touch the soft copper wire of the grounding wire. Because the insulating operation rope is too light, it cannot control the chuck in the air. The self-weight is accurately stuck on the wire, so the staff can only use the relatively heavy soft copper wire of the ground wire to control the chuck to hang the ground wire during the installation process. This will cause the body of the grounding wire to come into contact with the human body. Once there is voltage on the wire or reverse power transmission occurs on the line, the operator will be injured by electric shock due to contact with the soft copper wire, causing casualties.

(2) Since this kind of grounding wire cannot be hung naturally on the inner corner of the tension pole tower by its own gravity, it is only necessary for the operator to climb out of the tension insulator with the clamp in hand and clamp it on the wire, so that the personnel Not only will they be injured by induction electricity, but accidents of people falling from high altitudes and death will occur.

Contents of the invention

In order to solve the above technical problems, the present invention provides a grounding wire method and an isolated grounding tool for high-voltage transmission lines.

In order to realize the above-mentioned purpose of the invention, the present invention adopts following technical scheme:

An isolated grounding tool for high-voltage transmission lines, comprising: a grounding wire clamp, an L-shaped screw joint, a screw operation chuck, and an operating rod. The screw connection hole, the other end of the L-shaped screw joint is connected with the screw operating chuck; the other end of the screw operating chuck is buckled connected with the operating rod.

An isolated grounding tool used for high-voltage transmission lines, the L-shaped screw joint has an L-shaped structure, and the two ends of the L-shaped screw joint are provided with threaded threads connected by a thread.

An isolated grounding tool used for high-voltage transmission lines, the screw operating chuck is composed of a threaded pipe connected to the chuck, the threaded hole of the threaded pipe corresponds to the threaded wires at both ends of the L-shaped screw joint, and the chuck The clamping rod of the head corresponds to the clamping slot at one end of the operating rod.

An isolated grounding tool used for high-voltage transmission lines, the operating rod is formed by socketing of multi-section connecting rods, and the clamping tube at one end of the operating rod is provided with a clamping groove, and the clamping groove is an L-shaped on the clamping tube wall card slot.

A ground wire method for high-voltage transmission lines, the steps of which are as follows:

1) Assemble and adjust the isolated grounding tool,

(1) The operator screwed one end of the L-shaped screw joint into the screw connection hole beside the grounding wire card, and according to the working position of the operator, first adjust the hanging of the screw operating the chuck hanging on the high-voltage transmission line. Point the angle, then adjust the direction of the screw head of the L-shaped screw, and then tighten it;

(2) The operator connects the other end of the L-shaped screw joint with the operating rod with the screw joint, and then adjusts the working angle of the screw joint operation chuck and fixes it.

2) Connect the transmission line to the crossarm through the isolated grounding tool - grounding;

The operator on the tower first fixedly connects one end of the grounding wire to the cross arm for grounding; the operator then connects the other end of the grounding wire to the wire clip connected to the phase wire connected to the insulator, that is, the operating rod operates the clamping head through the screw port The clamped wire card is in contact with the phase wire, the grounding wire card moves, and the clamping plate of the grounding wire card clamps the phase wire.

Owing to adopting above-mentioned technical scheme, the present invention has the following advantages:

First, when working, you only need to connect the chuck with an insulating rod, and then use the L-shaped screw to rotate the wire chuck to adjust the opening direction according to the hanging requirements, and the staff can control the chuck to clamp it on the wire by manipulating the operating lever . During the work of installing the ground wire, the operator will neither touch the annealed copper wire nor climb out of the insulator, and can also control the hanging point of the chuck on the wire, so that "wherever it points, hang the ground wire on the "Where" is convenient, fast, safe and reliable for operators. Especially when working on the inner corner of the tension tower, the staff can overcome the difficulties that the drainage line is far away from the operating point and the drainage line is not vertical. The location can strictly guarantee its own safety, and the grounding wire can be installed safely and quickly. It greatly shortens the operation time, improves work efficiency, reduces the workload of the staff, and ensures the work quality of the ground wire

Second, no matter whether it is low voltage or high voltage, as long as the grounding wire with the operating rod is suspended, the operating rod and the chuck of the grounding wire cannot be separated, and the operating rod and the grounding wire can only be hung on the tower and the wire together. , This just causes how many grounding wires there are on the pole tower and there are as many operating rods, which is both unsafe and disorderly in actual long-term power outage maintenance operations.

And our improved connecting wire is different after adding the operating rod. After the staff has installed the grounding wire, the operating rod can be twisted to unscrew the operating rod from the chuck and leave the working place. In this way, multiple grounding wires can be hung with only one operating rod, which saves multiple operating rods, greatly reduces the workload of the staff, and the recycling of the operating rods ensures that there is no leftover on the tower and no violation of regulations. The free disassembly of the operating rod is convenient, fast, effective and safe!

Description of drawings

Fig. 1 is a structural schematic diagram of an isolated grounding tool for a high-voltage transmission line;

Fig. 2 is a schematic diagram of an isolated grounding tool used for grounding connection of a straight-rod high-voltage transmission line;

Fig. 3 is a schematic diagram of an isolated grounding tool used for grounding connection of a high-voltage transmission line of a strain tower;

In the figure: 1. Screw operation chuck; 2. L-shaped screw joint; 3. Screw connection hole; 4. Ground wire clip; 5. Operating lever; 6. Phase wire; 7. Ground wire; 8. Insulator; 9. Cross arm; 10. Tower; 11. Drainage line.

detailed description

As shown in Figures 1, 2, and 3, a grounding wire method for high-voltage transmission lines, the steps are as follows:

1. Assemble and adjust the isolated grounding tool,

1) The operator screws one end of the L-shaped screw joint 2 into the screw connection hole 3 beside the grounding wire clamp 4, and first adjusts the screw operation chuck hanging on the high-voltage transmission line according to the working position of the operator 1, adjust the direction of the screw head of the L-shaped screw, and then tighten it;

2) The operator connects the other end of the L-shaped screw joint 2 to the operating rod 5 with the screw joint, and then adjusts the working angle of the screw operating chuck 1 and fixes it.

2. Use the isolated grounding tool to connect the transmission line to the crossarm - grounding;

The operator on the pole tower 10 first fixedly connects one end of the ground wire 7 to the cross arm 9 for grounding; The rod 5 operates the wire clamp 4 clamped by the clamp head 1 through the screw port to contact the phase wire, the ground wire clamp 4 moves, and the clamp plate of the ground wire clamp 4 clamps the phase wire;

An isolated grounding tool for high-voltage transmission lines, comprising: a grounding wire clamp 4, an L-shaped screw joint 2, a screw operation chuck 1, and an operating rod 5, and the grounding wire clamp 4 is provided with an L-shaped screw The screw connection hole 3 of the joint 2 is screwed, and the other end of the L-shaped screw joint 2 is connected with the screw operation chuck 1; the other end of the screw operation chuck 1 is buckled connected with the operating rod 5.

The L-shaped screw joint 2 is an L-shaped structure, and the two ends of the L-shaped screw joint 2 are provided with threaded threads connected with a thread.

The screw-operated chuck 1 is formed by connecting a threaded pipe with the chuck. The threaded hole of the threaded pipe corresponds to the threaded threads at both ends of the L-shaped screw joint 2. corresponding to the slot.

The operating rod 5 is formed by socketing of multi-section connecting rods. The clamping tube at one end of the operating rod 5 is provided with a clamping groove, and the clamping groove is an L-shaped clamping groove on the wall of the clamping tube.

The present invention improves the original suspended grounding wire according to the existing two working defects. At the bottom of the grounding wire lead clamp 4, an L-shaped screw joint 2 that is crossed at two ends is installed additionally, and a pair of screw operation chuck 1 and the terminal have an insulating operating rod 5 of the screw joint.

During work, the operator only needs to screw one end of the L-shaped screw joint 2 in the screw connection hole 3 on the side of the ground wire lead clamp 4, and adjust it according to the working position of the staff and the angle of the hanging point where the clamp needs to be hung. Tighten the direction of the screw head of the L-shaped screw joint 2, then connect the operating rod 5 with the screw joint to the other end of the L-shaped screw, and then adjust the working angle of the chuck to fix.

The present invention can carry out multi-angle changes according to the position of the staff on the pole tower and the hanging point where the ground wire conductor clip 4 needs to be hung, and can meet various hanging requirements on the pole tower.

Claims (3)

1. An isolated grounding tool for high-voltage transmission lines, including: a grounding wire clip (4), a screw operation chuck (1), and an operating rod (5), characterized in that it also includes an L-shaped screw joint ( 2), the ground wire card (4) is provided with a screw connection hole (3) connected with the L-shaped screw joint (2) with a screw thread, and the other end of the L-shaped screw joint (2) is connected to the screw operation chuck ( 1) Connected; the other end of the screw operation chuck (1) is buckled connected with the operating rod (5); The L-shaped screw joint (2) has an L-shaped structure, and the two ends of the L-shaped screw joint (2) are provided with threaded threads connected by a thread; the screw operation chuck (1) is composed of a threaded pipe and a chuck. , the threaded hole of the threaded pipe corresponds to the threaded threads at both ends of the L-shaped screw joint (2), and the clamping rod of the clamping head corresponds to the clamping groove at one end of the operating rod (5). 2. An isolated grounding tool for high-voltage transmission lines according to claim 1, characterized in that: the operating rod (5) is composed of multi-section connecting rods socketed, and one end of the operating rod (5) The card tube is provided with a card slot, and the card slot is an L-shaped card slot on the wall of the card tube. 3. implement a kind of ground wire method that is used for high-voltage transmission line of the described isolated ground tool of claim 1, its steps are as follows: 1) Assemble and adjust the isolated grounding tool, (1) The operator screws one end of the L-shaped screw joint (2) into the screw connection hole (3) beside the grounding wire clamp (4), and adjusts the connection on the high-voltage transmission line according to the working position of the operator. Operate the hanging point angle of the chuck (1) on the screw port of the thread, then adjust the direction of the screw head of the L-shaped screw, and then tighten it; (2) The operator connects the other end of the L-shaped screw joint (2) to the operating rod (5) with the screw joint, and then adjusts the working angle of the screw joint operation chuck (1) and fixes it; 2) Connect the transmission line to the crossarm through the isolated grounding tool - grounding; The operator on the pole tower (10) first fixedly connects one end of the ground wire (7) to the cross arm (9) for grounding; (8) The connected phase line (6) is connected, that is, the operating rod (5) operates the clamp (1) through the screw port. The wire clip (4) connected to the phase wire is in contact with the phase wire, and the grounding wire clip (4) moves to ground The clamping plate of the wire clamp (4) clamps the phase wire.