CN201191541Y - Windproof Deflection Synthetic Insulators - Google Patents

Abstract

A windproof deflection synthetic insulator, including an insulator part, a voltage equalizing ring and an insulator end fitting, the gold has a "T"-shaped end, and the "T"-shaped end has a bolt hole for connecting with an iron tower cross arm. The utility model improves the connecting structure of the end fittings, directly rigidly connects the cross-arm of the iron tower with bolts, and because the "T"-shaped end of the fitting has a larger contact surface with the cross-arm of the iron tower, it is stably connected with the cross-arm of the iron tower. The utility model solves the shortcomings of the prior art that the composite insulator is light in weight, poor in wind deflection resistance, and prone to wind deflection discharge accidents. Ensure that the composite insulator can withstand tensile and bending loads, so as to avoid the occurrence of windage tripping accidents for jumpers, which is conducive to the safe operation of the line.

Description

Windproof Deflection Synthetic Insulators

Technical field

The utility model relates to a composite insulator used in the technical field of power transmission and transformation.

Background technique

In recent years, due to climate change, windy weather has gradually increased, which has brought serious threats to the safe operation of power lines. Wind deflection discharge accidents on transmission lines caused by strong winds have occurred from time to time. Increase the length of the porcelain or glass insulator string, increase the radius of the gap circle, and reduce the ability to resist wind discharge; then there is a large number of applications of synthetic insulators. The structure of the existing composite insulator includes an insulator body, a voltage equalizing ring and a fitting at its end. The fitting at the end is a component that connects the composite insulator with the iron tower and the wire and transmits the mechanical load. The fitting structure of the prior art is a ball The head hanging ring and a U-shaped screw, the composite insulator is connected with the iron tower cross arm through the U-shaped screw of the end hardware (as shown in Figure 1). Due to the light weight of composite insulators and poor ability to prevent wind deflection, this structure is prone to wind deflection discharge accidents.

Contents of the invention

The purpose of the invention of the utility model is to provide a wind deflection synthetic insulator which can effectively prevent the wind deflection tripping accident of the line and ensure the safe operation of the power grid.

The technical scheme of the utility model lies in: a windproof deflection synthetic insulator, including the insulator part, the voltage equalizing ring and the insulator end fittings, the gold at one end of the insulator has a "T" shaped end, and the "T" shaped end of the fitting There are bolt holes for connecting with the iron tower cross arm.

The gold at one end of the insulator has a "T"-shaped end, and the gold at the other end is a bowl hanging plate and a suspension clamp.

The utility model aims at the special requirements for the operation of transmission lines in areas with strong wind power, improves the connection structure of the end fittings, eliminates the continuous fittings part in the middle of the synthetic insulator in the prior art, and the fittings are directly connected to the cross-arm of the iron tower rigidly with bolts, because the fittings The "T"-shaped end has a larger contact surface with the iron tower cross arm, and its connection with the iron tower cross arm is stable. The utility model makes full use of the flexibility of the insulator glass lead rod to reduce the large moment generated by the instantaneous wind deflection, so as to ensure that the synthetic insulator can bear the tensile and bending loads, thereby avoiding the occurrence of wind deflection tripping accidents of jumpers, which is beneficial to the line safe operation.

The utility model has strong rigid-flexible characteristic damping and ability to restrain windage, and can withstand windy swing. Make the end of the insulator before and after the fatigue test bear the horizontal force: 0.4kN for 1min (110kV), 0.8kN for 1min (220kV); vibration fatigue: not less than 100,000 times; failure load: 50% of the rated load for 1min, 100% of the rated load The load lasts for 1 min.

Description of drawings

The utility model will be further described in detail below with reference to the embodiments provided by the accompanying drawings.

Fig. 1 is a schematic structural diagram of the prior art.

Fig. 2 is a structural schematic diagram of the utility model.

Fig. 3 is the usage state diagram of the utility model.

Detailed ways

In Fig. 1, the fitting structure of the prior art is a ball-end hanging ring and a U-shaped screw, the insulator 1 is connected with the iron tower cross arm 6 through the U-shaped screw of the fitting at its end, and 2 is a voltage equalizing ring.

In Fig. 2, the utility model is composed of the insulator part 1, the voltage equalizing ring 2 and the insulator end fittings. The insulator end gold has a "T"-shaped end 3, and the "T"-shaped end 3 has a bolt hole 4. "T" shaped end 3 is the contact surface rigidly connected with iron tower cross arm, and bolt 5 connects the utility model with iron tower cross arm 6 through bolt hole 4.

In Fig. 3, the utility model is composed of the insulator part 1, the pressure equalizing ring 2 and the insulator end fittings. The insulator end gold has a "T"-shaped end 3, and the bolt 5 passes through the bolt on the "T"-shaped end 3. The hole connects the utility model with the iron tower cross arm 6. The metalware at the other end of the insulating part is a bowl head hanging plate 7, and the bowl head hanging plate 7 is connected with the aluminum strap 9 through the suspension wire clamp 8.

Claims (2)

1. A windproof deflection composite insulator, including an insulator part (1), a voltage equalizing ring (2) and insulator end fittings, characterized in that: one end of the insulator has a "T"-shaped end (3), and the fittings There are bolt holes (4) for connecting with the iron tower cross arm on the "T" shaped end (3). 2. The windproof deflection composite insulator according to claim 1, characterized in that: the gold at one end of the insulator has a "T"-shaped end (3), and the other end of the insulator is a bowl hanging plate (7) and a suspension wire Clip (8).