CN107947027B - Installation method of lightning protection pin insulator installation tool for distribution overhead line - Google Patents

Abstract

The invention relates to a mounting method of a lightning protection pin insulator mounting tool for a distribution overhead line, and belongs to the technical field of power supply overhaul and maintenance. The technical proposal is as follows: a threading opening (10) is arranged at the middle part between the upper puncture wire clamp (1) and the lower puncture wire clamp (2), an insulated wire passes through the threading opening (10), a puncture (9) is vertically downwards arranged at the part of the upper puncture wire clamp (1) positioned at the threading opening, and the puncture (9) is contacted with an aluminum stranded wire in the insulated wire after penetrating through an insulating layer at the upper end of the insulated wire; the two opening gaskets (8) are respectively and symmetrically sleeved on two sides of the bottom end of the screw rod (4) and are positioned in a gap between the upper puncture wire clamp (1) and the lower puncture wire clamp (2). The invention has the beneficial effects that: the cost of purchasing the torque wrench in a large batch is reduced, the inconvenience caused by carrying the torque wrench by a person climbing the pole is reduced, and the working efficiency is improved; the operation is simple, the grasping is easy, the accuracy can be ensured, and the workload of staff is reduced.

Description

An installation method of a lightning protection pin type insulator installation tool for power distribution overhead lines

technical field

The invention relates to an installation method of a lightning protection pin type insulator installation tool for an overhead line of power distribution, and belongs to the technical field of power supply inspection and maintenance.

Background technique

The power supply system is to weaken the line tree contradiction and improve the ability of the distribution overhead line to prevent foreign objects. In recent years, the insulation rate of the distribution overhead line has been continuously improved, followed by the problem of line lightning protection. At present, the lightning protection of overhead insulated wires mostly adopts lightning protection Pin insulator line lightning protection equipment.

The upper end of the lightning protection needle type insulator adopts a piercing clamp to penetrate the insulating layer of the overhead insulated wire and make contact with the internal aluminum stranded wire, and the lower end adopts a discharge gap to release the overvoltage and overcurrent caused by lightning.

According to the construction requirements, professional torque wrench must be used for the installation of lightning protection pin insulators, and the operation should be carried out according to the torque change of the wrench to ensure that the puncture only penetrates the insulation outer skin without causing damage to the internal aluminum stranded wire, and avoids the load caused by the damage of the aluminum stranded wire. Flow drop and wire disconnection accidents. However, the torque wrench on the market is expensive and weighs more than ordinary wrenches. It is very laborious for the staff to carry the torque wrench to climb the pole, and it is also very cumbersome during operation; It is also necessary to observe the torque data at the same time, which is time-consuming and labor-intensive, and the operation is very inconvenient.

Contents of the invention

The purpose of the present invention is to provide a method for installing lightning protection pin insulator installation tools for power distribution overhead lines. It is not necessary to use a professional torque wrench for the installation of lightning protection pin insulators, and the installation can be completed by using an ordinary adjustable wrench, which reduces the torque required for mass purchases. The cost of the wrench is easy to carry, and the inconvenience caused by the climber to carry the torque wrench can be reduced, and the adjustable wrench can be used to tighten it in place, which improves the construction efficiency and solves the above-mentioned problems in the background technology.

Technical scheme of the present invention is:

A lightning protection needle insulator installation tool for power distribution overhead lines, comprising an upper puncture clamp, a lower puncture clamp, a nut, a screw, an insulating base, a core lead wire, an insulating jacket and an opening gasket, and the lower puncture clamp is set on On the top of the insulating base, the upper puncture wire clamp is set above the lower puncture wire clamp, and there is a gap between the upper puncture wire clamp and the lower puncture wire clamp. On the lower puncture wire clamp, the upper end of the screw rod is provided with a nut, and the nut is located above the upper puncture wire clamp; the middle part between the upper puncture wire clamp and the lower puncture wire clamp is provided with a threading opening, and the insulated wire passes through the threading opening. The puncture clamp is located on the part of the threading opening and is provided with a puncture vertically downward. The puncture pierces the insulation layer of the insulated wire and then contacts the aluminum stranded wire in the insulated wire; there are two opening gaskets, both of which are C-shaped structures, respectively It is symmetrically sleeved on both sides of the bottom end of the screw, and is located in the gap between the upper puncture wire clamp and the lower puncture wire clamp. The opening directions of the two opening gaskets are opposite; It has an insulating jacket on the outside.

The two opening gaskets have the same thickness, and their thicknesses are determined according to the diameter of the aluminum stranded wire inside the insulated wire clamped by the upper puncture wire clip and the lower puncture wire clip: clamp the upper puncture wire clip, and the puncture of the upper puncture wire clip After passing through the insulation layer of the insulated wire, it is just in contact with the aluminum stranded wire in the insulated wire. At this time, the distance between the upper puncture wire clamp and the lower puncture wire clamp is the thickness of the opening gasket; the opening gasket is placed on the lower puncture wire clamp. , due to the limitation of the opening gasket, ensure that the puncture of the upper puncture clamp is just in contact with the aluminum stranded wire in the insulated wire, and no force can be applied to the insulated wire to protect the insulated wire from damage.

The C-shaped structure of the opening gasket is inserted between the upper puncture wire clip and the lower puncture wire clip in order to adapt to both sides, and will not be affected by the screw rod.

The insulating base is arranged on the cross arm of the electric pole.

The lead wires of the iron core are connected with the lightning arrester.

A method for installing lightning protection pin insulators for distribution overhead lines, comprising the following steps:

① First, on the ground, put the insulated wire of the same type as that on the pole between the upper and lower piercing clamps of the lightning protection insulator of the same type as that on the pole, and tighten the nut on the upper end of the screw with a torque wrench , so that the puncture of the upper puncture clamp pierces the insulation layer of the insulated wire and then contacts the aluminum stranded wire in the insulated wire;

②Measure the distance between the upper puncture wire clip and the lower puncture wire clip with a vernier caliper; make two opening gaskets, both of which are C-shaped structures, and the thickness of the opening gasket is equal to the upper puncture wire clamp and the lower puncture wire measured by the vernier caliper distance between clips;

③During construction, climb onto the pole with a common wrench and an open spacer, and insert open spacers on both sides of the screw between the upper puncture wire clamp and the lower puncture line clamp, and the opening directions of the two open spacers are opposite to each other. ;Tighten the nut on the upper end of the screw rod with a common wrench. After the puncture of the upper puncture clamp pierces the insulation layer of the insulated wire, it contacts the aluminum stranded wire in the insulated wire. At this time, the upper puncture clamp is pressed tightly on the opening gasket , due to the limitation of the opening gasket, ensure that the puncture of the upper puncture clamp is just in contact with the aluminum stranded wire in the insulated wire, and no force can be applied to the insulated wire;

④ Finally, use a common wrench to tighten the nut on the upper end of the fastening screw to complete the installation of the lightning protection insulator for the distribution overhead line.

Beneficial effects of the present invention: it can reduce the cost of purchasing professional torque wrenches in large quantities, reduce the inconvenience caused by carrying torque wrenches for climbers, and improve work efficiency; and the method is simple to operate, easy to master, and can ensure accuracy, shortening the The power outage time reduces the user's misunderstanding and reduces the workload of the staff; the work that used to take an hour to complete now only takes ten minutes, which greatly improves the work efficiency.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic structural view of the opening gasket of the present invention;

In the figure: upper puncture wire clamp 1, lower puncture wire clamp 2, nut 3, screw rod 4, insulating base 5, core lead wire 6, insulating jacket 7, opening gasket 8, puncture 9, threading opening 10.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

A lightning protection pin insulator installation tool for distribution overhead lines, comprising an upper piercing clamp 1, a lower piercing clamp 2, a nut 3, a screw 4, an insulating base 5, a core lead 6, an insulating jacket 7 and an opening gasket 8, The lower puncture wire clamp 2 is arranged on the top of the insulating base 5, the upper puncture wire clamp 1 is arranged above the lower puncture wire clamp 2, there is a gap between the upper puncture wire clamp 1 and the lower puncture wire clamp 2, and the screw rod 4 is two , arranged symmetrically with each other, the lower end of the screw rod 4 penetrates the upper puncture wire clamp 1 and is fixed on the lower puncture wire clamp 2, the upper end of the screw rod 4 is provided with a nut 3, and the nut 3 is located above the upper puncture wire clamp 1; the upper puncture wire clamp 1 and The middle part between the lower puncture wire clips 2 is provided with a threading hole 10, and the insulated wire passes through the threading hole 10, and the upper puncture wire clip 1 is located on the position of the threading hole and is provided with a puncture 9 vertically downward, and the puncture 9 pierces the insulation. The insulating layer of the wire is in contact with the aluminum stranded wire in the insulated wire; there are two opening gaskets 8, both of which are C-shaped structures, which are respectively symmetrically sleeved on both sides of the bottom end of the screw rod 4, and are located on the upper puncture clamp 1 and In the gap between the lower piercing wire clips 2, the opening directions of the two opening gaskets are opposite; the core lead wire 6 is connected with the lower piercing wire clip 2, and the outside of the iron core wire 6 is provided with an insulating jacket 7.

The two opening gaskets have the same thickness, and their thicknesses are determined according to the diameter of the aluminum stranded wire inside the insulated wire clamped by the upper puncture wire clamp 1 and the lower puncture wire clamp 2: clamp the upper puncture wire clamp 1, and the upper puncture wire clamp The puncture 9 of 1 pierces the insulation layer of the insulated wire and just contacts the aluminum stranded wire in the insulated wire. At this time, the distance between the upper puncture wire clamp 1 and the lower puncture wire clamp 2 is the thickness of the opening gasket; the opening pad The piece 8 is placed on the lower puncture clamp 2. Due to the limitation of the opening gasket 8, after the puncture 9 of the upper puncture clamp 1 is just in contact with the aluminum stranded wire in the insulated wire, no force can be applied to the insulated wire to protect the insulation. The wires are not damaged.

The C-shaped structure of the opening gasket 8 is inserted between the upper puncture wire clamp 1 and the lower puncture wire clamp 2 in order to adapt to both sides, and will not be affected by the screw rod 4 .

The insulating base 5 is arranged on the cross arm of the electric pole.

The core leads 6 are connected with the lightning arrester.

A method for installing lightning protection pin insulators for distribution overhead lines, comprising the following steps:

① First, on the ground, put the insulated wire of the same type as that on the pole between the upper and lower piercing clamps of the lightning protection insulator of the same type as that on the pole, and tighten the nut on the upper end of the screw with a torque wrench , so that the puncture of the upper puncture clamp pierces the insulation layer of the insulated wire and then contacts the aluminum stranded wire in the insulated wire;

②Use the vernier caliper to measure the distance between the upper puncture wire clamp and the lower puncture wire clamp; make two opening gaskets, both of which are C-shaped structures, and the thickness of the opening gasket 8 is equal to the upper puncture wire clamp and the lower puncture wire clamp measured by the vernier caliper. distance between clamps;

③During construction, climb onto the electric pole with a common wrench and open spacer 8, and insert open spacers on both sides of the screw rod between the upper puncture line clamp 1 and the lower puncture line clamp 2, respectively. The direction of the opening is opposite; the nut on the upper end of the screw rod is tightened with a common wrench. After the puncture 9 of the upper puncture clamp 1 pierces the insulation layer of the insulated wire, it contacts the aluminum stranded wire in the insulated wire. At this time, the upper puncture clamp 1 presses Close on the opening gasket, due to the limitation of the opening gasket 8, ensure that the puncture 9 of the upper puncture clamp 1 is just in contact with the aluminum twisted wire in the insulated wire, and no force can be applied to the insulated wire;

④ Finally, use a common wrench to tighten the nut on the upper end of the fastening screw to complete the installation of the lightning protection insulator for the distribution overhead line.

The present invention can firstly manufacture various types of opening gaskets for matching between lightning protection pin insulators and insulated wires of distribution overhead lines in the workshop, and make them in batches. During construction, select suitable opening gaskets to improve construction efficiency. efficiency.

The opening gasket can be removed and reused after installation; it can also be used once without removing.

The gap measuring caliper can also be used for transformation, and the top of the caliper card is transformed into the form of an open gasket. According to the measurement data, a caliper card with the same thickness as the measurement distance is placed outside the screw in the middle of the upper and lower puncture clamps during construction.

Claims (3)

1. An installation method of a lightning protection pin type insulator installation tool for power distribution overhead lines, the following lightning protection pin type insulator installation tools for power distribution overhead lines are installed, and the lightning protection pin type insulator installation tool for power distribution overhead lines includes Upper piercing clamp (1), lower piercing clamp (2), nut (3), screw rod (4), insulating base (5), core lead wire (6), insulating jacket (7) and split gasket (8) , the lower piercing wire clip (2) is arranged on the top of the insulating base (5), the upper piercing wire clip (1) is arranged above the lower piercing wire clip (2), the upper piercing wire clip (1) and the lower piercing wire clip ( 2) There is a gap between them, two screw rods (4) are arranged symmetrically with each other, the lower end of the screw rod (4) penetrates the upper puncture wire clip (1) and is fixed on the lower puncture wire clip (2), the screw rod (4) The upper end is provided with a nut (3), and the nut (3) is located above the upper puncture wire clamp (1); the middle part between the upper puncture wire clamp (1) and the lower puncture wire clamp (2) is provided with a threading opening (10) , the insulated wire passes through the threading opening (10), and the upper piercing clamp (1) is located on the part of the threading port to be provided with a puncture (9) vertically downward. The aluminum stranded wires in the conductors are in contact with each other; there are two opening gaskets (8), both of which are C-shaped structures, which are respectively symmetrically sleeved on both sides of the bottom end of the screw rod (4), and are located on the upper puncture clamp (1) and the lower In the gap between the puncture wire clamps (2), the opening directions of the two opening gaskets are opposite; the core lead wire (6) is connected with the lower puncture wire clamp (2), and an insulating jacket ( 7); It is characterized in that comprising the following steps: ① First, on the ground, put the insulated wire of the same type as that on the pole between the upper and lower piercing clamps of the lightning protection insulator of the same type as that on the pole, and tighten the nut on the upper end of the screw with a torque wrench , so that the puncture of the upper puncture clamp pierces the insulation layer of the insulated wire and then contacts the aluminum stranded wire in the insulated wire; ②Measure the distance between the upper puncture wire clamp and the lower puncture wire clamp with a vernier caliper; make two opening gaskets, both of which are C-shaped structures, and the thickness of the opening gasket (8) is equal to the upper puncture wire clamp and the lower puncture wire clamp measured by the vernier caliper. The distance between the lower puncture clips; ③During construction, carry a common wrench and an open spacer (8) to climb onto the pole, and insert open spacers on both sides of the screw between the upper puncture clamp (1) and the lower puncture clamp (2), respectively, The opening directions of the two opening gaskets are opposite; use a common wrench to tighten the nut at the upper end of the screw rod, and the puncture (9) of the upper puncture clamp (1) pierces the insulation layer of the insulated wire and connects with the aluminum stranded wire in the insulated wire. At this time, the upper puncture clamp (1) is pressed against the opening gasket, and due to the limitation of the opening gasket (8), it is ensured that the puncture (9) of the upper puncture clamp (1) is just in line with the aluminum strand in the insulated wire. After the wires are in contact, no force can be applied to the insulated wires; ④ Finally, use a common wrench to tighten the nut on the upper end of the fastening screw to complete the installation of the lightning protection insulator for the distribution overhead line. 2. The installation method of a lightning protection pin type insulator installation tool for power distribution overhead lines according to claim 1, characterized in that: the thickness of the two opening gaskets (8) is equal, and the thickness is according to the upper puncture wire clamp (1) and the inner aluminum stranded wire diameter of the insulated wire clamped by the lower puncture clamp (2) is determined: clamp the upper puncture clamp (1), and the puncture (9) of the upper puncture clamp (1) pierces the insulated wire After the insulating layer of the insulated wire is just in contact with the aluminum stranded wire in the insulated wire, the distance between the upper puncture clamp (1) and the lower puncture clamp (2) is the thickness of the opening gasket. 3. The installation method of a lightning protection pin type insulator installation tool for power distribution overhead lines according to claim 1, characterized in that: the insulating base (5) is set on the cross arm of the pole; the core lead wire (6) Connect with lightning arrester.

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