CN201336528Y - Live replacement device for 220kV transmission line strain insulator string - Google Patents

Abstract

The utility model relates to an operating tool for overhead lines and specially used for live dismantling and replacement of tension insulator strings, in particular to a live replacement device for tension insulator strings of 220kV transmission lines. It is installed above the front card, with the mirror surface facing the direction of the rear card. The utility model has the advantage of providing a reverse-view mirror, which is installed above the front card in the insulator string replacement device, and the mirror surface faces the rear card, which is the position where the staff is. In this way, the staff is replacing the insulator string During the operation, the overall situation of the insulator string can be seen clearly according to the display of the reverse-view mirror, providing a convenient view of the entire operation, making the operation more flexible, convenient and more reliable.

Description

220kV Transmission Line Tension Insulator String Live Replacement Device

technical field

The utility model relates to an operating tool used for overhead lines and specially used for live dismantling and replacement of tension insulator strings, in particular to a live replacement device for tension insulator strings of 220kV transmission lines.

Background technique

During the operation of power equipment, the insulator strings are exposed, so they are easy to be stained. The insulation performance of the polluted insulator strings is greatly reduced, and they need to be cleaned or replaced. In the prior art, a live replacement device for insulator strings is used to replace dirty insulator strings. The device includes front clamps, rear clamps, screw rods and insulating pull plates. At the stress position, the rear card is clamped on the connecting plate of the insulator string, and one end of the insulating pull plate is connected with a wire rod, and the rear card is connected with the front card through the insulating pull plate with the screw rod. The rod adjusts the distance between the front clamp and the rear clamp, so that the tension of the insulator string is reduced, and it falls on the insulator string replacement device, and then the spring pin between the insulator string and the connecting plate is taken out, and the insulator string is removed for replacement. Its shortcoming is that when the insulator string is operated on the strain tower, the distance between the staff and the insulator string is relatively long. When removing the pin, the field of vision is limited due to the influence of various operating tools, so it is not necessary to operate it. Convenience, poor reliability.

Invention composition

The purpose of the utility model is to provide a 220kV transmission line tension insulator string live replacement device which improves the convenience and reliability of operation according to the deficiencies of the prior art.

The utility model is achieved through the following approaches:

220kV transmission line tension insulator string live replacement device, including front clamp, rear clamp, screw rod and insulation pull plate, the front clamp is clamped at the stress position where the wire end is connected to the insulator string, and the rear clamp is clamped on the insulator string On the connecting plate, one end of the insulating pull plate is connected with a threaded rod, and the rear card is connected with the front card through the insulating pull plate with the screw rod. Above, the mirror faces the rear card direction.

In this way, through the function of the reverse-view mirror, the operator can clearly see the state of the insulator string at each stage during the operation process, which improves the convenience and reliability of the operation. When removing the pin, with the help of the reverse-view mirror, the spring can be seen The situation of the position of the pin, thereby controlling the steps of removing the pin, plays a great role in the whole replacement process, making the replacement process more flexible and convenient, and the operation is more reliable.

The utility model can also be further specifically:

The inverted mirror is a convex mirror, or a concave mirror, or a plane mirror.

Choose different viewing mirrors according to different situations. The convex viewing mirror can enlarge the field of view, which is good for seeing the whole operation process and grasping all directions; the concave viewing mirror can focus the field of view. The mirror is very convenient; the plane mirror can be used for general occasions.

In summary, the utility model has the advantage of providing a reverse-view mirror, which is installed above the front card in the insulator string replacement device, and the mirror surface faces the rear card, which is where the staff is located. In this way, the staff In the process of replacing the insulator string, the overall situation of the insulator string can be seen clearly according to the display of the reverse-view mirror, providing a convenient view of the entire operation, making the operation more flexible, convenient and more reliable.

Description of drawings

Fig. 1 is a schematic structural diagram of a live replacement device for tension insulator strings of a 220kV transmission line according to the present invention.

Below in conjunction with embodiment the utility model is described further.

specific embodiment

Best practice:

Referring to attached drawing 1, the live replacement device for tension insulator strings of 220kV transmission lines includes a front clamp 1, a rear clamp 2, a screw rod 3 and an insulating pull plate 4, and a set of front clamps is clamped at the wire end to connect with the insulator string 5. In the power position, the rear card 2 is clamped on the connecting plate of the insulator string 5, and one end of the insulating pull plate 4 is connected with a screw 3, and the rear card 2 passes through the insulating pull plate 4 with the screw 3 and the front card 1. Connect, the utility model also includes a reverse mirror 6 on the basis of the above-mentioned structure, is a kind of convex mirror, and it is installed on the top of the front card 1, and the mirror surface faces the direction of the rear card 2.

Through the function of the mirror, the operator can clearly see the state of the insulator string at each stage during the operation, which improves the convenience and reliability of the operation, especially when removing the pin, with the help of the mirror, the spring can be seen The situation of the position of the pin, thereby controlling the steps of removing the pin, plays a great role in the whole replacement process, making the replacement process more flexible and convenient, and the operation is more reliable. The structure described in the utility model is suitable for insulator strings used in tension towers, and includes double-string vertically arranged insulator live replacement devices and double-string horizontally arranged insulator live replacement devices.

The undescribed part of the utility model is the same as the prior art.

Claims (4)

1. 220kV transmission line tension insulator series live replacement device, including front card (1), rear card (2), screw rod (3) and insulation pull plate (4), the front card (1) is set on the wire end On the stressed position connected with the insulator string (5), the rear card (2) is clamped on the connecting plate of the insulator string (5), and one end of the insulating pull plate (4) is connected with a wire rod (3), and the rear card (2) Connect with the front card (1) through the insulating pull plate (4) with the screw rod (3), which is characterized in that it also includes a reverse mirror (6), which is installed above the front card (1) , the mirror surface faces the direction of the rear card (2). 2. The live replacement device for tension insulator strings of 220kV transmission lines according to claim 1, characterized in that the reverse mirror (6) is a convex mirror. 3. The live replacement device for tension insulator strings of 220kV transmission lines according to claim 1, characterized in that the inverted mirror (6) is a concave mirror. 4. The live replacement device for tension insulator strings of 220kV transmission lines according to claim 1, characterized in that the reverse mirror (6) is a plane mirror.