Method for replacing a 10 kV pole without power interruption

Abstract

The application relates to a method for replacing a 10kV electric pole without power interruption, which sequentially comprises the following steps: S1, an operator uses a three-phase conductor support pole to lift the conductor upwards, S2, an old pole is used as a pole holder to pull up a new pole and control the new pole to enter a pole hole, S3, the conductor is fixed on the new pole, and S4, the old pole is slowly lowered by using the new pole as a pole holder, the method has the advantages that a first winch is used to pull up the new pole slowly through a first rope, the pulling-up speed of the electric pole can be controlled according to the actual installation environment, the old pole is lowered through a second fixed pulley by pulling a second rope, the lowering speed of the old pole can be controlled, the whole operation process is stable and controllable, therefore, the new pole is pulled up and controlled to enter the pole hole by using the old pole as a pole holder, and the old pole is removed by using the new pole as a pole holder, the whole electric pole replacement process is greatly simplified, the whole operation process does not need power interruption operation, and normal power utilization of users is not affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of live working maintenance of 10kV distribution overhead line, in particular to a method for replacing 10kV electric pole without power cut. BACKGROUND

[0002] Live replacement of 10kV overhead line straight pole is a complex project of power grid enterprise distribution network without power cut. In the current stage of rapid urban and rural development, many 10kV overhead line poles are directly affected by normal and stable operation of distribution network due to factors such as "original pole wood pole replaced by cement pole, long operation period, poor manufacturing process, old pole body and even cracks, and impact from external mechanical equipment".

[0003] The conventional method for replacing straight pole without power cut is to use a hoist to control the pole body on the basis of good wire insulation shielding, and to replace the straight pole in the mode of "installing cross arm, fittings and insulator, fixing wire to new pole, hoisting and pulling out old pole" by relying on special equipment such as hoist and insulated arm truck and adopting the intermediate potential method of insulated glove operation. This method is mechanical construction, which is high in work efficiency and can complete the work in 1-2 hours, and is particularly suitable for situations where the pole body is tilted and severely damaged due to vehicle impact. However, in the working conditions of mountainous hilly fields, the hoist cannot reach the site, and only the power cut construction method of manual pole holding and pole standing can be adopted, which not only consumes time and effort, but also has adverse effects on continuous power supply to users in the rear section of the line. SUMMARY

[0004] The purpose of the present application is to solve the problem that the existing mechanical construction cannot adapt to the working conditions in mountainous hilly fields, and to provide a method for replacing 10kV electric pole without power cut, which uses the old pole as a pole to pull up the new pole and control it into the pole hole, and uses the new pole as a pole to slowly put down the old pole, without the need for hoisting equipment to enter the site for construction, greatly simplifying the construction process of pole replacement.

[0005] To solve the above technical problems, the present application is realized by the following technical scheme: a method for replacing 10kV electric pole without power cut, comprising the following steps in sequence:

[0006] S1: the operator wears personal insulation protection appliances and climbs onto the old pole, and then removes the binding wire on the three-phase wire and insulator in sequence, and then uses a three-phase wire support pole to lift the wire upward and fixes the three-phase wire support pole on the old pole;

[0007] S2: Install the first guy wire and the first fixed pulley on the old pole, and install the first rope on the first fixed pulley. One end of the first rope is fixedly connected to the new pole, and the other end of the first rope is connected to the first winch. Then, install two first control ropes on the new pole. The two first control ropes are set at a 60° angle, and the angle bisector of the first control rope is set opposite to the horizontal direction of the first rope. Finally, use the old pole as a support to slowly pull up the new pole and control it to enter the pole hole. Ground personnel adjust the direction of the new pole to ensure that the crossarm of the new pole is perpendicular to the direction of the conductor. Backfill soil to reinforce the foundation.

[0008] S3: The workers climb the new pole and slowly lower the conductors using the three-phase conductor support pole, and then tie the three-phase conductors and the binding wires on the insulators in sequence;

[0009] S4: Install a second guy wire and a second fixed pulley on the new pole, and install a second rope on the second fixed pulley. One end of the second rope is fixedly connected to the old pole, and the other end of the second rope is connected to the second winch. Then, install a second control rope on the old pole. The direction of the second control rope is opposite to the horizontal direction of the second rope. When removing the old pole, first dig the foundation hole of the old pole, use the new pole as a support pole and pull the second rope at the same time, slowly release the second rope to ensure that the old pole lands smoothly, and remove the crossarm hardware.

[0010] Preferably, the binding wire in step S1 is removed using an insulated three-pronged rake and insulated binding wire shears.

[0011] Preferably, the height to which the conductor is lifted in step S1 is not less than 0.4m.

[0012] Preferably, in step S2, the distance between the first rope and the tip of the new pole is not less than 3m, and the distance between the first control rope and the tip of the new pole is not less than 4m.

[0013] Preferably, in step S2, before the new pole is pulled up, the crossarm, insulator and hardware must be installed on the new pole, and the height of the pole tip after the new pole is erected must not be lower than that of the old pole, and the horizontal distance between the new pole and the old pole should be 1 to 2 meters, and the pole hole of the new pole should be directly below the line.

[0014] Preferably, the binding wire in step S3 is tied using an insulated three-pronged rake and an operating rod.

[0015] Preferably, in step S4, the distance between the second rope and the tip of the old pole is not less than 3m, and the distance between the second control rope and the tip of the old pole is not less than 2.5m.

[0016] In summary, the advantages of the present application are: in S1, the worker wears personal insulation protection tools and uses a three-phase conductor support pole to lift the conductor upward; in S2, the old pole is used as a holding pole to pull up the new pole and control the entry of the pole hole; in S3, the conductor is fixed on the new pole; and in S4, the new pole is used as a holding pole to slowly lower the old pole. In S2, the first pull wire is installed on the old pole and the first fixed pulley, which can effectively prevent the pole from falling and guide the first rope. The first rope is pulled by the first winch to slowly pull up the new pole, and the speed of pulling up the pole can be controlled according to the actual installation environment. In S4, the second pull wire is installed on the new pole and the second fixed pulley, which can effectively prevent the new pole from falling due to uneven force. The second rope is pulled by the second fixed pulley to control the descent of the old pole, and the speed of the old pole can be controlled to ensure the stability of the whole operation process. Therefore, without the support of large mechanical equipment, the new pole is pulled up and controlled into the pole hole by using the old pole as a holding pole, and the old pole is removed by using the new pole as a holding pole, which greatly simplifies the whole pole replacement process, greatly reduces the work intensity, and does not need to stop power supply during the whole operation process, which will not affect the normal power supply of users. In addition, in S1, the worker wears personal insulation protection tools and uses a three-phase conductor support pole to lift the conductor upward, which can keep the conductor at a safe distance from the pole and facilitate the installation of the conductor on the new pole. DETAILED DESCRIPTION

[0017] A method for replacing a 10kV electric pole without stopping power supply, sequentially comprising the following steps:

[0018] S1: the worker wears personal insulation protection tools and climbs onto the old pole, and then sequentially removes the binding wire on the three-phase conductor and the insulator, and then uses a three-phase conductor support pole to lift the conductor upward and fix the three-phase conductor support pole on the old pole;

[0019] S2: a first pull wire and a first fixed pulley are installed on the old pole, in this embodiment, the first pull wire is preferably four, a first rope is installed on the first fixed pulley, one end of the first rope is fixedly connected to the new pole, the other end of the first rope is connected to a first winch, two first control ropes are installed on the new pole, the two first control ropes are arranged at an angle of 60°, the angle bisector of the first control rope is arranged opposite to the horizontal direction of the first rope, and finally the new pole is slowly pulled up and controlled into the pole hole by using the old pole as a holding pole, the ground personnel adjust the direction of the new pole to ensure that the cross arm of the new pole is perpendicular to the direction of the conductor, and the foundation is reinforced by backfilling soil;

[0020] S3: the worker climbs onto the new pole and slowly lowers the conductor using a three-phase conductor support pole, and then sequentially binds the three-phase conductor and the binding wire on the insulator;

[0021] S4: Install a second guy wire and a second fixed pulley on the new pole. In this embodiment, four second guy wires are preferred. Install a second rope on the second fixed pulley, and fix one end of the second rope to the old pole. Connect the other end of the second rope to the second winch. Then install a second control rope on the old pole. The direction of the second control rope is opposite to the horizontal direction of the second rope. When removing the old pole, first dig the foundation of the old pole hole. Use the new pole as a support pole and pull the second rope at the same time. Slowly release the second rope to ensure that the old pole lands smoothly. Then remove the crossarm hardware.

[0022] The pole replacement is achieved through the following steps: S1, workers wearing personal protective equipment use a three-phase conductor support pole to lift the conductor upwards; S2, the old pole is used as a support to pull up the new pole and control its insertion into the pole hole; S3, the conductor is fixed to the new pole; and S4, the old pole is slowly lowered using the new pole as a support. In step S2, by installing a first guy wire and a first fixed pulley on the old pole, the first guy wire effectively prevents pole collapse, and the first fixed pulley provides traction guidance for the first rope. The first winch pulls the first rope to slowly lift the new pole, allowing the lifting speed to be controlled according to the actual installation environment. Similarly, in step S4, by installing a second guy wire and a second fixed pulley on the new pole, the second guy wire effectively prevents uneven force on the new pole from causing it to collapse. The two fixed pulleys guide the traction of the second rope, controlling the descent of the old pole and its speed. This ensures a smooth and controllable process. Therefore, without the support of large machinery, the old pole is used as a support to lift the new pole and control its insertion into the pole hole, and the new pole is used as a support to remove the old pole. This greatly simplifies the pole replacement process, significantly reduces workload, and eliminates the need for power outages, thus not affecting users' normal electricity supply. Furthermore, in step S1, the workers wear personal protective equipment and use a three-phase conductor support pole to lift the conductor, maintaining a safe distance from the pole, which facilitates the installation of the conductor on the new pole.

[0023] In step S1, the ties are removed using an insulated three-pronged rake and insulated ties shears, enabling rapid removal and adaptability to various working environments. The conductor is lifted to a height of at least 0.4m in step S1, ensuring it remains at a safe distance and guaranteeing operational safety. In step S2, the distance between the first rope and the tip of the new pole is at least 3m, facilitating control of the new pole during lifting. The distance between the first control rope and the tip of the new pole is at least 4m, bringing the first control rope closer to the center of gravity, which is beneficial for pulling the new pole in reverse and ensuring balance after it is lifted.

[0024] The new pole needs to be installed with cross arm, insulator and fittings in the S2 step before being pulled up, and the height of the new pole after being erected should not be lower than that of the old pole, and the horizontal distance between the new pole and the old pole is 1-2 meters, and the pole hole of the new pole should be directly below the line, which can further improve the replacement efficiency of the electric pole. The S3 step is tied by the insulating three-tooth rake and the operating rod, which can improve the tying efficiency of the wire. The distance between the second rope and the pole top of the old pole in the S4 step is not less than 3m, and the distance between the second control rope and the pole top of the old pole is not less than 2.5m, which is beneficial to the control of the old pole in the lifting operation and ensures the balance of the old pole after being pulled up.

[0025] In addition to the above preferred embodiments, the present application has other implementation manners, and those skilled in the art can make various changes and modifications according to the present application, as long as they do not deviate from the spirit of the present application, which shall belong to the scope defined by the appended claims of the present application.

Claims

1. A method for replacing 10kV power poles without power interruption, characterized in that: The steps are as follows: S1: The workers wearing personal insulating protective equipment climb the old pole and remove the binding wires on the three-phase conductors and insulators in sequence. Then, they use the three-phase conductor support pole to lift the conductors upward and fix the three-phase conductor support pole to the old pole. S2: Install the first guy wire and the first fixed pulley on the old pole, and install the first rope on the first fixed pulley. One end of the first rope is fixedly connected to the new pole, and the other end of the first rope is connected to the first winch. Then, install two first control ropes on the new pole. The two first control ropes are set at a 60° angle, and the angle bisector of the first control rope is set opposite to the horizontal direction of the first rope. Finally, use the old pole as a support to slowly pull up the new pole and control it to enter the pole hole. Ground personnel adjust the direction of the new pole to ensure that the crossarm of the new pole is perpendicular to the direction of the conductor. Backfill soil to reinforce the foundation. S3: The workers climb the new pole and slowly lower the conductors using the three-phase conductor support pole, and then tie the three-phase conductors and the binding wires on the insulators in sequence; S4: Install a second guy wire and a second fixed pulley on the new pole, and install a second rope on the second fixed pulley. One end of the second rope is fixedly connected to the old pole, and the other end of the second rope is connected to the second winch. Then, install a second control rope on the old pole. The direction of the second control rope is opposite to the horizontal direction of the second rope. When removing the old pole, first dig the foundation hole of the old pole, use the new pole as a support pole and pull the second rope at the same time, slowly release the second rope to ensure that the old pole lands smoothly, and remove the crossarm hardware.

2. The method for replacing a 10kV power pole without power interruption according to claim 1, characterized in that: In step S1, the binding wires are removed using an insulated three-pronged rake and insulated binding wire shears.

3. The method for replacing a 10kV power pole without power interruption according to claim 1, characterized in that: In step S1, the conductor is lifted to a height of no less than 0.4m.

4. The method for replacing a 10kV power pole without power interruption as described in claim 1, characterized in that: In step S2, the distance between the first rope and the tip of the new pole shall not be less than 3m, and the distance between the first control rope and the tip of the new pole shall not be less than 4m.

5. The method for replacing a 10kV power pole without power interruption according to claim 1, characterized in that: In step S2, before the new pole is pulled up, the crossarm, insulator and hardware must be installed on the new pole. After the new pole is erected, the height of the pole tip must not be lower than that of the old pole, and the horizontal distance between the new pole and the old pole should be 1 to 2 meters. The pole hole of the new pole should be directly below the line.

6. The method for replacing a 10kV power pole without power interruption according to claim 1, characterized in that: In step S3, the binding wire is secured using an insulated three-pronged rake and an operating rod.

7. The method for replacing a 10kV power pole without power interruption according to claim 1, characterized in that: In step S4, the distance between the second rope and the tip of the old pole shall not be less than 3m, and the distance between the second control rope and the tip of the old pole shall not be less than 2.5m.