CN104538891B - A kind of composite insulator outlet method - Google Patents

Abstract

The invention discloses a composite insulator outgoing line method, and provides a composite insulator outgoing line bridge, which includes a wire side connecting plate hook, an insulating bridge plate, a tensioning device, a cross-arm side connecting plate hook, a cross-arm side connecting plate hook and a tensioner. One end of the tensioning device is connected, the other end of the tensioning device is connected to the insulating bridge plate, and the other end of the insulating upper bridge plate is connected to the hook of the wire side connecting plate. The method of wire outlet of the present invention enables the field workers to complete the power failure quickly, smoothly and efficiently. Overhaul work. According to the on-site workers, the 220kV vertically arranged composite insulator string outlet bridge is reasonable in design, light in weight, and easy to carry; it is easy to install and dismantle, with low labor intensity and less personnel required, and the on-site application effect is good.

Description

A composite insulator outlet method

technical field

The present invention relates to a wire outlet method, in particular to a composite insulator wire outlet method.

Background technique

At present, the number of 220kV tension poles and towers using vertically arranged synthetic insulator strings is increasing. When performing power outage maintenance operations on such lines, operators must follow the insulator strings out of the wires for maintenance or inspection of clamps, fittings, etc. Since the insulator strings are forbidden to be stepped on, if there is no suitable outlet tool, a relatively cumbersome ladder must be used instead. Due to the use of vertically arranged 220kV tensile composite insulator strings, the distance from the cross arm to the conductor will generally reach about 4m. If a method such as a ladder or pipe is used to directly erect the transition, the ladder or pipe used for the long distance needs to be considered. After bearing the human body load of the workers, the cross-section also needs to be enlarged. If the use of insulating materials is considered, the weight of the entire outlet tool will reach 20-30kg, which is extremely inconvenient to use on site. Since the line maintenance points are many and wide and most of the operating points are located on high mountains and high towers, this will greatly increase the labor intensity of the operators, and it is urgent to develop a light and easy-to-carry outlet method.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art, and provide a composite insulator outlet method that is easy to carry and can be quickly installed between the front and rear connecting plates of the insulator string.

A composite insulator outlet method, providing a composite insulator outlet bridge, including a wire side connecting plate hook, an insulating bridge plate, a tensioning device, a cross arm side connecting plate hook, the wire side connecting plate is square, and the wire The side plate hook includes a sheet-shaped connecting plate. One end of the connecting plate is provided with a connecting piece matched with the insulating bridge plate. The connecting plate and the connecting piece are vertically intersected. The other end of the connector is provided with a hook groove that can be hooked into the square connecting plate, and a support leg perpendicular to the connector is also provided on the connector, and the support leg is supported at the double bowl head.

The insulating bridge plate is formed by connecting several sections, and a detachable movable connection is adopted between several sections;

The tensioning device is a screw device;

The cross-arm side link plate hook includes a sheet-shaped support plate, and an auxiliary hook is provided at the end of the support plate. The auxiliary hook includes a threaded hanging rod, and the end of the support plate A connecting block is provided, and a threaded hole for the hanging rod to pass through is arranged on the connecting block. There is a row of positioning holes in the length direction of the support plate, and a hook slot that can be snapped into the triangular plate on the side of the cross arm. The hook slot can be locked at any positioning hole of the support plate according to the length of the insulator string to adapt to different insulator strings,

The hook of the cross-arm side connecting plate is connected with one end of the tensioning device, the other end of the tensioning device is connected with the insulating bridge plate, and the other end of the insulating upper bridge plate is connected with the wire side connecting plate hook. When personnel arrive at the tower to be overhauled, they first assemble the folded parts of the tool into a ready-to-use state,

(2) The operator carries a transfer rope to the tower to the position of the insulator string to be repaired, and transfers the composite insulator outlet bridge to the tower through the transfer rope.

(3) The operator fastens the double-control safety belt, moves to the tension insulator series triangular connecting plate, holds the assembled composite insulator outlet bridge, first hangs the wire side connecting plate hook on the square connecting plate and The legs are supported in place, then hang the hook of the cross-arm side plate on the triangular plate and hang the auxiliary hook,

(4) The operator tightens the screw rod of the tensioning device so that the outlet bridge is in a tight state,

(5) The operator moves the safety belt to the synthetic insulator string, adopts a squatting foot step on the outgoing line bridge and holds the vertically arranged upper string of insulators, and moves from the side of the cross arm to the conductor side in small steps to exit the line.

(6) After the maintenance work of the wire part is completed, the operator returns to the cross arm side along the outlet bridge, loosens the screw rod of the tensioning device, removes the outlet bridge and transfers to another phase, and repeats the above actions until the work is completed.

The supporting legs are telescopic supporting legs.

There are many structures for realizing the telescopic supporting legs, which are either hinged together by multi-section tubes in pairs, or after two tubes are nested together, screw fits are provided on the mutual contact surfaces.

The screw device is a double-stroke screw device.

The insulating bridge board is made of phenolic epoxy resin fiberglass laminated board.

The tension insulator series outlet bridge is installed between the wire and the cross arm. If there is an induced voltage on the wire, it may be transmitted to the body of the operator through the outlet bridge, causing electric shock hazards. At the same time, the operator may accidentally step on the pole , Mistakenly install the outlet bridge on the live wire, which requires the bridge plate of the outlet bridge, which must have high insulation strength and certain mechanical strength, so the phenolic epoxy resin FRP laminate is used.

In summary, compared with the prior art, the present invention has the following advantages:

The composite insulator string outlet method of the present invention can effectively solve the power outage maintenance of the 220kV power transmission line using the composite insulator string arranged vertically in tension. It innovatively adopts the tensioning method for installation, which converts the lateral load of the tool into longitudinal tension, which greatly reduces the weight of the tool, and the tool can be installed and removed by one person. Because the bridge plate of the outlet bridge adopts high-strength insulating material, it can also prevent electric shock by induction and electric shock by mistakenly boarding the pole. The complete set of tools is composed of wire side connecting plate hooks, insulating bridge plates, tensioners, cross arm side connecting plate hooks and other components. It has the advantages of small size, light weight, simple and convenient operation, and easy to carry. It takes 5-10 minutes, which greatly reduces the labor intensity of operators and improves work efficiency and safety.

After the development of this tool is completed, it has been tried many times on the simulated circuit, and it has been applied in the power-off maintenance of the tension tower. Adopting the newly developed composite insulator string outlet bridge, the on-site operators quickly, smoothly and efficiently completed the power outage maintenance work. According to the on-site workers, the 220kV vertically arranged composite insulator string outlet bridge is reasonable in design, light in weight, and easy to carry; it is easy to install and dismantle, with low labor intensity and less personnel required, and the on-site application effect is good.

Description of drawings

Fig. 1 is a schematic structural diagram of a composite insulator string bridge of the present invention.

FIG. 2 is a top view of FIG. 1 .

Reference Signs Explanation 1 wire side connecting plate hook 11 connecting plate 111 connecting piece 1111 hook groove of connecting plate 12 supporting leg 2 insulating bridge plate 3 tensioning device 4 cross arm side connecting plate hook 41 supporting plate 411 positioning hole 42 auxiliary on supporting plate Hook 43 hanging rod 44 positioning nut 45 hook groove 46 connecting block.

detailed description

The present invention will be described in more detail below in conjunction with examples.

Example 1

A composite insulator outlet bridge, including a wire side connecting plate hook 1, an insulating bridge plate 2, a tensioning device 3, and a cross arm side connecting plate hook 4, the conducting wire side connecting plate is square, and the conducting wire side connecting plate hook It includes a sheet-shaped connecting plate 11. One end of the connecting plate is provided with a connecting piece 111 that matches the insulating bridge plate. The connecting plate and the connecting piece are vertically intersected. The connecting piece is movably connected to the insulating bridge plate. The other end is provided with a hook groove 1111 that can be hooked into the square connecting plate, and a supporting leg 12 perpendicular to the connecting piece is also provided on the connecting piece, and the supporting leg is supported at the double bowl head.

The insulating bridge plate is formed by connecting several sections, and a detachable movable connection is adopted between several sections;

The tensioning device is a screw device;

The cross-arm side link plate hook 4 includes a sheet-shaped support plate 41, an auxiliary hook 42 is provided at the end of the support plate, and the auxiliary hook includes a threaded hanging rod 43, which is The end of the plate is provided with a connecting block 46, and a threaded hole for the hanging rod to pass is arranged on the connecting block. 44. There is a row of positioning holes 411 on the support plate along the length direction of the support plate, and a hook groove 45 that can be snapped into the triangular joint plate on the side of the cross arm. The hook groove can be selected and locked on the support according to the length of the insulator string. Any positioning hole of the board to adapt to different insulator strings,

The hook of the cross arm side connecting plate is connected with one end of the tensioning device, the other end of the tensioning device is connected with the insulating bridge plate, and the other end of the insulating upper bridge plate is connected with the wire side connecting plate hook. The supporting legs are telescopic supporting legs. The screw device is a double-stroke screw device. The insulating bridge board is made of phenolic epoxy resin fiberglass laminated board.

The parts not described in this embodiment are the same as the prior art.

Claims (4)

1. A composite insulator outlet method, characterized in that: a composite insulator outlet bridge is provided, including a wire side connecting plate hook, an insulating bridge plate, a tensioning device, a cross arm side connecting plate hook, and the wire side connecting plate hook The plate is square, and the wire side connecting plate hook includes a sheet-shaped connecting plate. One end of the connecting plate is provided with a connecting piece that matches the insulating bridge plate. The connecting plate and the connecting piece are vertically intersected. On the insulating bridge plate, a hook groove that can be hooked into the square connecting plate is provided on the other end of the connector, and a support leg perpendicular to the connector is also provided on the connector, and the support leg is supported at the double bowl head. The insulating bridge plate is formed by connecting several sections, and a detachable movable connection is adopted between several sections; The tensioning device is a screw device; The cross-arm side link plate hook includes a sheet-shaped support plate, and an auxiliary hook is provided at the end of the support plate. The auxiliary hook includes a threaded hanging rod, and the end of the support plate A connecting block is provided, and a threaded hole for the hanging rod to pass through is arranged on the connecting block. There is a row of positioning holes in the length direction of the support plate, and a hook slot that can be snapped into the triangular plate on the side of the cross arm. The hook slot can be locked at any positioning hole of the support plate according to the length of the insulator string to adapt to different insulator strings, The hook of the cross-arm side connecting plate is connected with one end of the tensioning device, the other end of the tensioning device is connected with the insulating bridge plate, and the other end of the insulating upper bridge plate is connected with the wire side connecting plate hook. When personnel arrive at the tower to be overhauled, they first assemble the folded parts of the tool into a ready-to-use state, (2) The operator carries a transfer rope to the tower to the position of the insulator string to be repaired, and transfers the composite insulator outlet bridge to the tower through the transfer rope. (3) The operator fastens the double-control safety belt, moves to the tension insulator series triangular connecting plate, holds the assembled composite insulator outlet bridge, first hangs the wire side connecting plate hook on the square connecting plate and The legs are supported in place, then hang the hook of the cross-arm side plate on the triangular plate and hang the auxiliary hook, (4) The operator tightens the screw rod of the tensioning device so that the outlet bridge is in a tight state, (5) The operator moves the safety belt to the synthetic insulator string, adopts a squatting foot step on the outgoing line bridge and holds the vertically arranged upper string of insulators, and moves from the side of the cross arm to the conductor side in small steps to exit the line. (6) After the maintenance work of the wire part is completed, the operator returns to the cross arm side along the outlet bridge, loosens the screw rod of the tensioning device, removes the outlet bridge and transfers to another phase, and repeats the above actions until the work is completed. 2. A composite insulator outlet method according to claim 1, characterized in that: said supporting legs are telescopic supporting legs. 3. A composite insulator outlet method according to claim 2, characterized in that: said screw device is a double-stroke screw device. 4. A method for connecting wires of synthetic insulators according to claim 3, characterized in that: the insulating bridge board is made of phenolic epoxy resin glass fiber reinforced plastic laminated board.