CN103746316A - Device and method for replacing insulator string of straight corner tower in hot-line work mode - Google Patents

Abstract

The invention discloses a device and a method for replacing an insulator string of a straight corner tower in a hot-line work mode. The device comprises a replacement tool (1) which is used for fixing and transferring the load of an insulator string to be replaced. The device is characterized by also comprising an insulating cross arm (2), an insulating pulley block (3), a plurality of insulating hauling ropes (4) and an insulating basket (5). The method comprises the following steps: mounting the insulating cross arm (2) and the insulating pulley block (3); mounting the replacement tool (1); allowing the insulating hauling ropes (4) to penetrate through the insulating pulley block (3) and mounting the insulating basket (5); hauling the insulating hauling ropes (4) to ensure that the insulating basket (5) and an equal potential operator in the insulating basket (5) enter an equal potential, and the like. According to the device and the method for replacing the insulator string of the straight corner power in the hot-line work mode, which are disclosed by the invention, the device is simple in structure, reasonable in design, safe, reliable, free of influence from deflection of the insulator string and strong in university, and the device and the method are suitable for being widely popularized and applied.

Description

A device and method for live replacement of straight-line corner tower insulator strings

technical field

The invention relates to a device and method for live replacement of straight-line corner tower insulator strings, in particular to a device and method capable of live replacement of 500kV line straight-corner tower insulator strings of different tower shapes, belonging to the technical field of power line maintenance.

Background technique

Insulators are an indispensable electrical component in the process of power transmission. They are mainly used on transmission line towers to carry the load of the wires and maintain electrical insulation between the wires and the tower itself. Since the insulator works in the outdoor environment for a long time, it is more prone to defects. Due to the deflection of the wires of the straight corner tower by 0°-20°, the insulator string is subjected to a horizontal load and deflects, and the hanging point of the wires of the insulators will cross the farthest end of the cross arm. At this time, in the traditional straight tower operation method, the tower Operators cannot use ropes to pull equipotential operators and insulators to conductors.

Contents of the invention

The technical problem to be solved by the present invention is to provide a live replacement straight corner tower insulator that can be used to pull the equipotential electrician to the wire by adding an insulating cross arm no matter how much the wire of the straight corner tower is deflected. String device and method.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A device for replacing the insulator string of a straight-line corner tower with electricity, including a replacement tool for fixing and transferring the load of the insulator string to be replaced, and is characterized in that it also includes an insulating cross arm, an insulating pulley block, several insulating traction ropes and an insulating hanging basket , the insulating cross arm is located at the cross arm end of the straight corner tower, the insulating pulley block includes a pulley and a diverting pulley, the pulley is located at the end of the insulating cross arm, and the diverting pulley is located on the straight corner tower, the The insulated traction rope is connected to the insulated hanging basket after passing through the diverting pulley and the pulley.

The insulating cross-arm is a long rod, the insulating cross-arm is arranged horizontally and protrudes from the cross-arm of the straight corner tower, and the insulating cross-arm is located above the hanging point at the lower end of the insulator string to be replaced.

The replacement tool includes a fixture, a tightening screw, an insulating pull rod and an insulating bottle holder for holding the insulator string to be replaced, and the fixture includes an upper suspension point for clamping the upper end of the insulator string to be replaced. a clamp and a lower clamp for clamping the suspension point at the lower end of the insulator string to be replaced, the tightening screw is connected to the upper clamp and an insulating pull rod, and the insulating pull rod is also fixedly connected to the lower clamp , the insulating bottle holder is provided with a traction rope.

The angle between the suspension point at the lower end of the to-be-replaced insulator string and the pulley and the insulating cross-arm is 80° to 100°.

The deflection pulley is located on the upper right side of the pulley. the

A method for replacing the insulator strings of straight-line corner towers with electricity using the device for replacing the insulator strings of straight-line corner towers with electricity, which is characterized in that it includes the following steps in sequence:

Step 1: installing the insulating cross arm and insulating pulley block;

Step 2: installing the replacement tool, which includes a tightening lead screw and an insulating pull rod;

Step 3: passing the insulated traction rope through the insulated pulley block and installing the insulated hanging basket;

Step 4: pull the insulated traction rope to make the insulated hanging basket and the equipotential electrician inside enter the equipotential;

Step 5: Tighten the lead screw to transfer the load of the insulator string to be replaced to the insulating pull rod;

Step 6: Transfer the insulator string to be replaced and install a new insulator string;

Step 7: Loosen the tightening lead screw and remove the replacement tool.

The equipotential is a position horizontal to the suspension point at the lower end of the insulator string to be replaced.

The load of the insulator string to be replaced is the wire.

Before said step one, the step of checking personal safety appliances is also included.

After the step seven, it also includes the steps of clearing the site and inspecting the remnants.

The invention provides a device and method for live replacement of the insulator strings of straight corner towers, which is not affected by the deflection angle of the insulator strings, and the position of the hanging point of the insulated traction rope is extended by the insulating cross arm, ensuring the transmission of the insulator strings and the use of the insulating basket When entering the equipotentiality, the insulated traction rope can be used to pull it in place smoothly; in addition, because the electrician on the straight corner tower uses a pulley block and an insulated cross-arm to draw the rope, it can work on the tower away from the cross-arm, and the operating position is relatively safe. The device and method for replacing insulator strings of straight-line corner towers with electricity provided by the present invention have simple structure, reasonable design, safety and reliability, are not affected by the deflection angle of insulator strings, have strong versatility, and are suitable for wide popularization and application.

Description of drawings

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

Fig. 2 is a schematic diagram of the structure of the present invention entering equipotentiality.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1-2, a device for replacing the insulator string of a straight corner tower with electricity, including a replacement tool 1 for fixing and transferring the load of the insulator string to be replaced, is characterized in that it also includes an insulating cross arm 2 and an insulating pulley block 3. Several insulated traction ropes 4 and insulated hanging baskets 5, the insulated cross arm 2 is located at the end of the cross arm of the straight corner tower, the insulated pulley block 3 includes a pulley 31 and a diverting pulley 32, and the pulley 31 is located at the end of the insulated cross arm. At the end of the cross arm 2, the diverting pulley 32 is located on the straight corner tower, and the insulated traction rope 4 passes through the diverting pulley 32 and the pulley 31 and connects to the insulating hanging basket 5.

The insulating cross arm 2 is a long rod, the insulating cross arm 2 is arranged horizontally and protrudes from the cross arm of the straight corner tower, and the insulating cross arm 2 is located at the suspension point at the lower end of the to-be-replaced insulator string 6 above.

The replacement tool 1 includes a clamp 11, a tightening screw 12, an insulating pull rod 13 and an insulating bottle holder 14 for supporting the insulator string 6 to be replaced, and the clamp 11 includes a clamp for clamping the string to be replaced. The upper fixture of the suspension point at the upper end of the insulator string 6 and the lower fixture for clamping the suspension point of the lower end of the insulator string 6 to be replaced, the tightening lead screw 12 is connected with the upper fixture and the insulating pull rod 13, the The insulating pull rod 13 is also fixedly connected with the lower fixture, and the insulating bottle holder 14 is provided with a traction rope.

The angle between the suspension point at the lower end of the to-be-replaced insulator string 6 and the connecting line of the pulley 31 and the insulating cross-arm 2 is 80-100°.

The turning pulley 32 is located on the upper right of the pulley 31 . the

A method for replacing the insulator strings of straight-line corner towers with electricity by using a device for replacing the insulator strings of straight-line corner towers with electricity, which is characterized in that it includes the following steps in sequence:

1. Check personal safety tools: wear personal safety tools correctly, be inspected and supervised by the person in charge, and send special personnel to measure and check the required tools;

2. Climbing the tower: Electrician No. 1 and No. 2 carry the insulation transmission rope to climb the tower, install the insulation transmission rope and the insulation block at the appropriate position of the cross-arm operation and put down the insulation block to the ground, then the No. 3 electrician and Equipotential electrician climbing the tower;

3. Transfer tools and equipment: After the ground electrician puts the replacement tool 1, insulating hanging basket 5, insulating cross arm 2, insulating pulley block 3 and insulating traction rope 4 into the insulating tackle, electrician No. 1 and electrician No. 2 pull the insulating tackle upper arm;

4. Install insulating cross-arm and insulating pulley block: Electrician No. 1 on the tower installs the insulating cross-arm at the end of the cross-arm, so that the pulley 31 at the end of the insulating cross-arm and the hanging point of the insulator wire are basically on the vertical line, and at the same time at the operating point The turning pulley 32 is installed on the tower body above, which is convenient for electricians on the tower to operate by ropes in a safe position;

5. Assemble the replacement tool 1: electrician No. 1 and electrician No. 2 are responsible for installing the tightening screw 12, insulating pull rod 13 and insulating cross arm 2, and electrician No. 3 is responsible for installing the insulating basket 5 and insulating support bottle Rack 14;

6. Pass the insulated traction rope 4 through the insulated pulley block 3 and install the insulated hanging basket 5;

7. The equipotential electrician enters the strong electric field: the equipotential electrician uses the insulating basket 5 with the cooperation of the electrician on the tower, and pulls the insulating basket 5 and the equipotential electrician through the insulating traction rope 4 on the insulating cross arm 2 . Into a strong electric field and the same potential as the wire;

8. Transfer the wire load: After the equipotential electrician installs the lower clamp at the wire end, the insulating pull rod 13 and the insulating bottle holder 14, the No. 1 and No. 2 electricians on the tower tighten the tightening screw 12 to load the wire. Transfer to the insulating pull rod 13. After checking that there is no problem, the equipotential electrician pushes out the spring pin and removes the insulator string 6 to be replaced and connects the bowl head with the wire, and separates the insulator string 6 to be replaced from the wire after obtaining the consent of the person in charge of the work;

9. Transfer the position of the insulator string 6 to be replaced and replace it with a new insulator string: the electrician on the tower pulls the 6 strings of insulators to be replaced to the cross arm by tightening the traction rope of the insulated bottle holder 14 through the insulating cross arm 2, and then disassembles it , replace the new insulator string;

10. Install a new insulator string and remove the replacement tool 1, insulating cross arm 2 and insulating pulley block 3: use the insulating traction rope 4 on the insulating cross arm 2 to pass the assembled insulator string to the wire through the insulating bottle holder 14, The equipotential electrician connects the new insulator string with the wire, installs the spring pin, checks that the connection is reliable, and reports to the person in charge of the work; after obtaining the consent of the person in charge, electrician No. 1 and electrician No. 2 loosen the tightening lead screw 12 and remove it. Insulated pull rod 13, tightening lead screw 12, insulating bottle holder 14, insulating cross arm 2, insulating pulley block 3 are transmitted to the ground, and the equipotential electrician uses the insulating basket 5 to withdraw from the strong electric field with the cooperation of the electrician on the tower, and removes the The tool is passed to the ground;

11. Return to the ground: After checking that there is no residue on the wire, return to the ground and clear the field.

The equipotential is a position horizontal to the hanging point at the lower end of the insulator string 6 to be replaced.

The load of the insulator string 6 to be replaced is a wire.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (10)

1. the device of an electrified replacing linear angle tower insulator string, comprise the replacing instrument (1) for fixing and shift the load of insulator string to be replaced, it is characterized in that: also comprise insulator crossarm (2), insulating block group (3), some eradication edge pull ropes (4) and insulation hanging basket (5), described insulator crossarm (2) is positioned at the cross-arm end of straight-line angle tower, described insulating block group (3) comprises pulley (31) and angle pulley (32), described pulley (31) is positioned at the end of described insulator crossarm (2), described angle pulley (32) is positioned on described straight-line angle tower, described insulation pull rope (4) is through the rear described insulation hanging basket (5) that is connected of described angle pulley (32) and pulley (31).

2. the device of a kind of electrified replacing linear angle tower insulator string according to claim 1, it is characterized in that: described insulator crossarm (2) is a stock, described insulator crossarm (2) is horizontally disposed with and protrudes from the cross-arm of described straight-line angle tower, and described insulator crossarm (2) is positioned at the top of described insulator string to be replaced (6) lower end hitch point.

3. the device of a kind of electrified replacing linear angle tower insulator string according to claim 1, it is characterized in that: described replacing instrument (1) comprises jig (11), Wire tensioning screw (12), insulated tension pole (13) and for holding the insulating insulator bracket (14) of insulator string to be replaced (6), described jig (11) comprises upper jig for blocking described insulator string to be replaced (6) upper end hitch point and for blocking the lower jig of described insulator string to be replaced (6) lower end hitch point, described Wire tensioning screw (12) connects described upper jig and insulated tension pole (13), described insulated tension pole (13) is also fixedly connected with described lower jig, described insulating insulator bracket is provided with pull rope on (14).

4. the device of a kind of electrified replacing linear angle tower insulator string according to claim 1, is characterized in that: the angle between described insulator string to be replaced (6) lower end hitch point and line and the described insulator crossarm (2) of described pulley (31) is 80 ~ 100 °.

5. the device of a kind of electrified replacing linear angle tower insulator string according to claim 1, is characterized in that: described angle pulley (32) is positioned at the upper right side of described pulley (31).

6. the method for carrying out a kind of electrified replacing linear angle tower insulator string of insulator string band point replacing with the device of a kind of electrified replacing linear angle tower insulator string according to claim 1, is characterized in that: comprise the following steps successively:

Step 1: described insulator crossarm (2) and insulating block group (3) are installed;

Step 2: described replacing instrument (1) is installed, and described replacing instrument (1) comprises Wire tensioning screw (12) and insulated tension pole (13);

Step 3: described insulation pull rope (4) is passed to described insulating block group (3) and described insulation hanging basket (5) is installed;

Step 4: draw described insulation pull rope (4) and make described insulation hanging basket (5) and interior equipotential electrician thereof enter equipotential;

Step 5: tighten up described Wire tensioning screw (12) to shift the extremely described insulated tension pole (13) of load of described insulator string to be replaced (6);

Step 6: shift described insulator string to be replaced (6) and new insulator string is installed;

Step 7: loosen described Wire tensioning screw (12) and remove described replacing instrument (1).

7. the method for a kind of electrified replacing linear angle tower insulator string according to claim 6, is characterized in that: described equipotential is and the hitch point position of level mutually, described insulator string to be replaced (6) lower end.

8. the method for a kind of electrified replacing linear angle tower insulator string according to claim 6, is characterized in that: the load of described insulator string to be replaced (6) is wire.

9. the method for a kind of electrified replacing linear angle tower insulator string according to claim 6, is characterized in that: before described step 1, also comprise and check personal security's apparatus step.

10. the method for a kind of electrified replacing linear angle tower insulator string according to claim 6, is characterized in that: after described step 7, also comprise and clearing out a gathering place and legacy inspection step.

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