CN203480947U - Improved rod-type composite insulator string and connection structure - Google Patents

Abstract

An improved rod-type composite insulator string and a connection structure are disclosed. The rod-type composite insulator string is formed by a glass fiber resin core rod, a synthetic material sheath, an umbrella skirt and connection fittings of two ends. An end portion of the connection fitting of one end is a cylindrical tubular snap ring. One side of the snap ring is provided with a gap. The connection fitting of the other end is a flat head with a circular hole. Simultaneously, the connection structure of the insulator string is disclosed. The structure comprises the rod-type composite insulator string, strain clamps and a socket-clevis eye. A snap ring portion of the rod-type composite insulator string is connected with the strain clamp through the socket-clevis eye. A flat head portion of the other end is directly connected with another strain clamp through a bolt. Through improving a connection point of the rod-type composite insulator string, the socket-clevis eye does not need to be added and a connection distance is shortened; construction personnel can easily connect the rod-type composite insulator string with the strain clamps directly; materials are saved and construction is convenient.

Description

Improved Rod Composite Insulator String and Connection Structure

technical field

The utility model relates to the technical field of rod-type composite insulator strings, in particular to an improved rod-type composite insulator string and a connection structure.

Background technique

Insulators commonly used in overhead transmission lines include pin insulators, suspension insulators, cross-arm insulators, rod insulators and composite insulators, among which the rod insulator is a porcelain body, and its function is equivalent to a suspension insulator composed of several suspension insulators. string. However, it is lighter in weight and shorter in length, which can save steel and reduce the height of the tower. The disadvantages of rod-type porcelain insulators are that the manufacturing process is complicated, the cost is high, and it is easy to break due to vibration during operation. Its basic structure includes the insulating part in the middle and the connecting parts at both ends. At present, the connection at both ends of all rod insulators is a snap-in joint, as shown in Figure 1 and Figure 2. When it needs to be connected with the strain clamp When connecting, it is necessary to use the bowl-head hanging plate for over-connection, as shown in the figure, although this structure is also very easy to use, but through analysis, we found that the bowl-head hanging plate only serves as a connection, but in This structure is used in all current circuits. Through analysis, we found that the disadvantages are as follows. First, a rod-type composite insulator string needs to use two bowl-head hanging plates when connecting to the tension clamp. Each bowl-head hanging plate is calculated at 27 yuan, and a corner rod is It will save 162 yuan. Under normal circumstances, a 10kV line needs to purchase 4860 yuan in terms of 30 corners, tension resistance, and terminal calculations. The 2nd, construction personnel is due to being limited by the length of safety belt, time-consuming and laborious when connecting strain-resistant clamp on bar, also wasted material simultaneously.

Utility model content

Therefore, in view of the above problems, the utility model provides an improved rod-type composite insulator string and connection structure. By improving the structure of the connection point, there is no need to add a bowl-head hanging plate, and the distance between the insulator strings is shortened. The construction personnel directly composite the rod-type The insulator string is connected with the strain clamp, which saves materials and facilitates construction.

The technical scheme adopted by the utility model to solve its technical problems is: an improved rod-type composite insulator string, which is composed of a glass fiber resin core rod, a synthetic material sheath, an umbrella skirt and connecting fittings at both ends, and is characterized in that , the end of the connecting fitting at one end is a cylindrical snap ring with a gap on one side of the snap ring, and the connecting fitting at the other end is a flat head with a round hole.

The surface of the connecting hardware has a hot-dip galvanized film layer.

An improved connection structure of rod-type composite insulator strings, including rod-type composite insulator strings, tension clamps and bowl head hanging plates, the rod-type composite insulator string adopts the above structure, characterized in that the rod-type composite The snap ring part of the insulator string is connected to the tension clamp through the bowl head hanging plate, and the flat head at the other end is directly connected to another tension clamp through bolts.

The tension clamp is a bolt type tension clamp.

The beneficial effects of the utility model are: by improving the connecting point through the rod-type composite insulator string, saving a bowl hanging board, shortening the connection distance, the construction personnel can easily and directly connect the rod-type composite insulator string with the strain clamp Connection saves materials and facilitates construction.

Description of drawings

Figure 1 is the installation structure diagram of the rod-type composite insulator string before improvement;

Figure 2 is a schematic diagram of the structure of the rod-type composite insulator string before improvement;

Figure 3 is a schematic diagram of the structure of the improved rod-type composite insulator string;

Figure 4 is an installation structure diagram of the improved rod-type composite insulator string;

In the figure: 1 umbrella skirt, 2 connecting fittings, 3 snap ring, 4 flat head, 5 rod type composite insulator string, 6 strain clamp, 7 bowl head hanging plate,

Detailed ways

As shown in Figure 3 and Figure 4,

An improved rod-type composite insulator string is composed of a glass fiber resin core rod, a synthetic material sheath, an umbrella shed 1 and connecting fittings 2 at both ends. The main structure is basically the same as the existing structure, and the improvement lies in the The connecting fittings at one end have been structurally improved. Among them, the end of the connecting fitting at one end is a cylindrical snap ring 3, and a gap is provided on one side of the snap ring, which is used to cooperate with the W-shaped bowl head hanging plate, and the connecting fitting at the other end is a The flat head 4 with a round hole can be directly connected with the strain clamp. At the same time, there is a hot-dip galvanized film layer on the surface of the connecting fittings, which has good weather resistance.

An improved connection structure of rod-type composite insulator strings, including rod-type composite insulator strings 5, tension clamps 6 and bowl head hanging plates 7, the rod-type composite insulator strings adopt the above structure, wherein the rod-type composite insulators The snap ring part of the string 5 is connected to the tension clamp 6 through the bowl head hanging plate 7. The bowl head hanging plate is a standard part of the electric power industry, and there are many models to choose from. ". The flat head at the other end of the insulator string is directly connected to another tension clamp through bolts. The tension clamps are bolt type tension clamps. Strain clamps are used for corners, splices, and terminal connections. Spiral aluminum-clad steel wire has extremely strong tensile strength, no concentrated stress, and plays a role in protection and auxiliary vibration reduction for optical cables. The tension clamp is used to fix the conductor or lightning protection wire to the tension insulator string of the non-linear tower, and acts as an anchor, and is also used to fix the stay wire of the stay pole tower.

Except for the technical features described in the instructions, all are known technologies by those skilled in the art.

Claims (4)

1. An improved rod-type composite insulator string, which is composed of a glass fiber resin mandrel, a synthetic material sheath, an umbrella shed and connecting fittings at both ends. It is characterized in that the end of the connecting fitting at one end is a cylindrical clamp Ring, and there is a gap on one side of the clasp, and the connecting fitting at the other end is a flat head with a round hole. 2. The improved rod-type composite insulator string according to claim 1, characterized in that the surface of the connecting hardware has a hot-dip galvanized film layer. 3. An improved connection structure of rod-type composite insulator strings, including rod-type composite insulator strings, tension clamps and bowl-head hanging plates, and the rod-type composite insulator strings are as claimed in any one of claims 1 to 2. The insulator string described above is characterized in that the snap ring part of the rod-type composite insulator string is connected to the strain clamp through the bowl head hanging plate, and the flat head at the other end is directly connected to another strain clamp through bolts . 4. The connection structure of the improved rod-type composite insulator string according to claim 3, characterized in that, the strain clamp is a bolt-type strain clamp.

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