CN103138206A - Device and method to replace overhead ground wire of high-voltage overhead power transmission line by means of suspending of PPR pipes - Google Patents

Abstract

A device and method for replacing an overhead ground wire with a high-voltage overhead power transmission line by using a PPR pipe hanging, which relates to a device and a method for replacing an overhead ground wire for a high-voltage overhead power transmission line, and specifically relates to using a PPR pipe for hanging a high-voltage overhead power transmission line to replace an overhead ground Line devices and methods. The invention aims to solve the problems of long construction time, many required personnel and huge investment in the existing construction of replacing overhead ground wires. The invention comprises two PPR pipes, two insulating ropes and four steel ground anchors. The middle part of each insulating rope is fitted with a PPR pipe respectively, and one end of each insulating rope is respectively connected with a steel ground anchor. The invention is used for replacement of overhead ground wires.

Description

Device and method for replacing overhead ground wires of high-voltage overhead power transmission lines using PPR pipe hanging

technical field

The invention relates to a device and a method for replacing an overhead ground wire for a high-voltage overhead power transmission line, in particular to a device and a method for replacing an overhead ground wire for a high-voltage overhead power transmission line by using a PPR pipe for hanging.

Background technique

With the improvement of my country's comprehensive national strength and the development of power grids, especially after the introduction of policies to stabilize the economy and stimulate domestic demand, huge sums of money have been invested in the infrastructure construction of railways, high-grade highways and power lines, which radiate all over the country. The replacement and reconstruction of overhead ground wires of high-voltage power transmission lines often encounters the problem of crossing with railways, highways and power lines. Usually, in the construction of replacing the overhead ground wire, the method of taking a span frame or using a crane to bind the horn pole and tension the wire is often used. The disadvantages of the method of building a spanning frame are that the preparation of materials is complicated, time-consuming, requires a large number of personnel, and transportation is difficult, time-consuming and laborious; although the method of using a crane to bind the poles is simple, it is also greatly affected by the terrain. When there are many crossing points and long construction time, the number of cranes used and the cost of too many shifts are too high; the tension release line requires advanced mechanical equipment, huge investment, and the terrain must be suitable for the deployment of mechanical equipment. When crossing railways, highways, and power lines in special areas, the crane cannot be used due to terrain restrictions, and the crossing frame cannot be fully erected and the tension and tension line method can be used for crossing construction. The railway transportation is frequent, and it is impossible to stop due to crossing construction; the traffic volume of the road is large, and the road closure construction affects traffic and is difficult to realize; the power outage of the crossed power line directly affects the production and life of users, and also reduces the reliability of power supply. Affect the economic benefits of power supply enterprises.

Contents of the invention

In order to solve the problems of long construction time, many required personnel and huge investment in the existing construction of replacing overhead ground wires, the present invention further proposes a device and method for replacing overhead ground wires with high-voltage overhead power transmission lines using PPR pipe hanging.

The technical scheme adopted by the present invention for solving the above-mentioned problems is: the device described in the present invention comprises two PPR pipes, two insulating ropes and four steel ground anchors, and a PPR pipe is respectively set in the middle of each insulating rope, and each heel One end of the insulating rope is respectively connected with a steel drill ground anchor.

The concrete steps of method of the present invention are as follows:

Step 1. Hang a PPR pipe on the parallel wires on both sides of the spanned object;

Step 2. Pull both ends of each insulating rope to make the two PPR pipes parallel;

Step 3. Tighten each insulating rope, and ram the steel ground anchors at both ends of each insulating rope into the ground. The distance between each steel ground anchor and the object to be spanned is 10 meters;

Step 4. Perform the setting-out and tightening operation of the overhead ground wire on the two PPR pipes, and complete the replacement of the overhead ground wire after the installation of the pole and tower wire clips on both sides of the spanned object;

Step 5. Remove the replacement overhead ground wire device.

The beneficial effects of the present invention are: only two people are needed to replace the overhead ground wire by using the present invention, which reduces labor input and saves construction time. The present invention has simple structure, convenient operation, less capital investment, and saves a lot of cost; It reduces the life of residents caused by long-term power outages, as well as the economic losses of power consumers such as factories and enterprises. and security implications.

Description of drawings

Fig. 1 is the working schematic diagram of the present invention.

Detailed ways

Specific Embodiment 1: This embodiment is described in conjunction with FIG. 1. The device for replacing overhead ground wires with high-voltage overhead power transmission lines by using PPR pipes to hang down in this embodiment includes two PPR pipes 1, two insulating ropes 2 and four steel wires. Brazed ground anchor 3, the middle part of each insulating rope 2 is equipped with a PPR pipe 1 respectively, and one end of each insulating rope 2 is connected with a steel brazed ground anchor 3 respectively.

Specific embodiment two: This embodiment is described in conjunction with Fig. 1, and the insulating ropes 2 at both ends of each PPR pipe 1 of the high-voltage overhead power transmission line described in this embodiment are used to hang and replace the overhead ground wire device. There is a knot 2-1.

The technical effect of this embodiment is: the knot 2-1 on the insulating rope 2 at both ends of each PPR pipe 1 can prevent the PPR pipe 1 from moving on the insulating rope 2, and avoid the ground wire from falling off during the replacement of the overhead ground wire. and staff.

Other components and connections are the same as those in the first embodiment.

Specific embodiment three: This embodiment is described in conjunction with Fig. 1. In this embodiment, each steel braze ground anchor 3 of the overhead ground wire device using PPR pipe hanging to replace the overhead ground wire device is a threaded steel braze with a diameter of 22mm. The steel brazing ground anchor 3 made. Other components and connections are the same as those in the first embodiment.

Specific Embodiment 4: Combination Fig. 1 illustrates this embodiment. The diameter of each insulating rope 2 of the overhead ground wire replacement device for high-voltage overhead power transmission lines using PPR pipe hanging in this embodiment is 16mm-20mm. Other components and connections are the same as those in the first embodiment.

Embodiment 5: This embodiment is described with reference to FIG. 1 . In this embodiment, the wall thickness of each PPR pipe 1 of the high-voltage overhead power transmission line replacement overhead ground wire device using PPR pipe hanging is 10 mm to 14 mm. Other components and connections are the same as those in the first embodiment.

Specific embodiment six: This embodiment is described in conjunction with FIG. 1. The specific steps of a method for replacing an overhead ground wire with a high-voltage overhead power transmission line using the device described in Embodiment 1 described in this embodiment are as follows:

Step 1. Hang a PPR pipe 1 respectively on the parallel wires above the two sides of the spanned object;

Step 2, pulling both ends of each insulating rope 2 to make the two PPR pipes 1 parallel;

Step 3, tighten each insulating rope 2, and ram the steel ground anchor 3 at both ends of each insulating rope 2 into the ground, and the distance between each steel ground anchor 3 and the object to be crossed is 10 meters;

Step 4: Carry out the setting-out and tightening operations of the overhead ground wires on the two PPR pipes 1, and complete the replacement of the overhead ground wires after the installation of the pole and tower wire clips on both sides of the spanned object;

Step 5. Remove the replacement overhead ground wire device.

Claims (6)

1. utilize the hanging of PPR pipe to carry out the high voltage overhead power transmission sequence and change the overhead ground wire device: it is characterized in that: the hanging of the described PPR of utilization pipe is carried out high voltage overhead power transmission sequence replacing overhead ground wire device and is comprised two PPR pipes (1), two insulating cords (2) and four drill rod earth anchors (3), the middle part of every insulating cord (2) is set with respectively a PPR pipe (1), and often the end with insulating cord (2) respectively is connected with a drill rod earth anchor (3) respectively.

2. utilize according to claim 1 the hanging of PPR pipe to carry out the high voltage overhead power transmission sequence and change the overhead ground wire device, it is characterized in that: respectively be provided with respectively a knot (2-1) on the insulating cord (2) at the two ends of each PPR pipe (1).

3. utilize according to claim 1 the hanging of PPR pipe to carry out the high voltage overhead power transmission sequence and change the overhead ground wire device, it is characterized in that: each drill rod earth anchor (3) is that diameter is the drill rod earth anchor (3) of the screw thread drill rod making of 22mm.

4. utilize according to claim 1 the hanging of PPR pipe to carry out the high voltage overhead power transmission sequence and change the overhead ground wire device, it is characterized in that: the diameter of every insulating cord (2) is 16mm～20mm.

5. utilize according to claim 1 the hanging of PPR pipe to carry out the high voltage overhead power transmission sequence and change the overhead ground wire device, it is characterized in that: the wall thickness of each PPR pipe (1) is 10mm～14mm.

6. one kind is utilized the described device of claim 1 to carry out the method that the high voltage overhead power transmission sequence is changed overhead ground wire, it is characterized in that: the high voltage overhead power transmission sequence is carried out in the hanging of the described PPR of utilization pipe, and to change the concrete steps of method of overhead ground wire as follows:

Step 1, crossed over thing both sides above parallel wire on respectively hang respectively a PPR pipe (1);

The two ends of step 2, every insulating cord of traction (2) make two PPR pipes (1) parallel;

Step 3, with every insulating cord (2) tension, and will every insulating cord (2) the drill rod earth anchor (3) at two ends ram ground, each drill rod earth anchor (3) distance is 10 meters by the distance of leap thing;

The replacing of namely completing overhead ground wire after thing both sides shaft tower wire clamp installs is crossed in step 4, the unwrapping wire that carries out overhead ground wire on two PPR pipes (1) and stringing operation;

Step 5, will change the overhead ground wire device and remove.