CN201060706Y - A Streamlined Electric Locomotive Insulator - Google Patents

Abstract

The utility model relates to a streamlined electric locomotive insulator, the umbrella shed and the column of which are streamlined structures, and the installation dimensions and the measures taken to strengthen the strength are similar to the existing locomotive insulators. The technical solution adopted by the utility model is characterized in that: the insulator includes identical large sheds (3) and (7), main column (2), identical small sheds (4) and (5) and (6) , base (8); mounting holes (9) are arranged under the main column (2) where the insert (1) is installed. The advantages are: 1. The relatively increased creepage distance of the streamlined insulator increases the pollution flashover voltage; 2. The high-speed airflow generated by the streamlined convex surface during operation has a good self-cleaning effect on the insulator; 3. The streamlined structure of the insulator can effectively eliminate and Reduce the collision and capture of water droplets, fog droplets and pollution particles during the movement of the insulator, and reduce the adhesion of pollutants on the surface of the insulator. If the surface of the insulator is sprayed with silicone rubber anti-fouling and flash-off hydrophobic paint, the effect will be more obvious.

Description

A Streamlined Electric Locomotive Insulator

technical field

The utility model relates to a streamlined insulator for an electric locomotive. The streamlined insulator supports and insulates the roof pantograph and the busbar of the electric locomotive. The invention belongs to the technical field of electric locomotive insulation.

Background technique

Electric locomotives rely on high-voltage electricity as a source of power. To introduce high-voltage power into locomotives, pantographs and busbars must be used. In order to support the pantograph and busbar and insulate it from the locomotive car body, dozens of insulators must be equipped on each electric locomotive. For example, there are a total of 40 insulators on the roof of the SS4 improved locomotive, and 38 insulators on the roof of the SS4 locomotive.

The locomotive is an outdoor sports body. The insulators on the locomotive are affected by pollution, rain, fog, ice and snow, lightning, etc. Flashover phenomena often occur on the insulators, including pollution flashover, rain flashover, ice flashover, thunder flashover, etc. Among them, pollution flashover is the most harmful and the most common. Pollution flashover is a phenomenon that dust in the air adheres to the surface of the insulator and causes the insulation of the insulator to drop, resulting in a flashover phenomenon. The danger of the flashover phenomenon of the roof insulator is that the locomotive in operation is forced to stop to maintain the insulator, which seriously burns the catenary wire, disturbs the normal running order, and endangers the safety of the railway operation.

Contents of the invention

In order to overcome the above problems, the utility model provides a streamlined electric locomotive insulator.

The technical solution adopted by the utility model is characterized in that:

A streamlined electric locomotive insulator, one end of a main column (2) is fixedly connected to a base (8), the other end of the main column (2) is provided with an insert (1), and the main column (2) is sequentially connected to a large umbrella skirt ( 3), the small umbrella skirt (4) and the small umbrella skirt (5) and the small umbrella skirt (6) and the big umbrella skirt (7) are fixedly connected, and there is a distance between the connections; The holes (9) are evenly distributed.

The installation dimensions of the utility model and the measures taken for strengthening the strength are similar to the existing locomotive insulators.

The beneficial effects of the utility model are specifically as follows: the streamline shape is round at the front and pointed at the back, with a smooth surface, slightly like the shape of a water drop. The insulator with this shape suffers the least resistance when moving in the air, and has the following characteristics: first, the relatively long creepage of the streamlined insulator increases the pollution flashover voltage; second, the high-speed airflow generated by the streamlined convex surface during operation It has a good self-cleaning effect on the insulator; third, the streamlined structure of the insulator can effectively eliminate and reduce the collision and capture of water droplets, mist droplets and polluted dust particles during the movement of the insulator, and reduce the adhesion of pollutants on the surface of the insulator. If the surface of the insulator is sprayed with silicone rubber anti-fouling and flash-off hydrophobic paint, the effect will be more obvious.

Description of drawings

Figure 1 is a side view of a streamlined insulator;

Fig. 2 is the A-A view of Fig. 1;

Fig. 3 is the B-B view of Fig. 1;

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

Detailed ways

Example 1:

In the streamlined insulator shown in Figure 1, the large shed (3) is larger than the small shed (4), small shed (5) and small shed (6) below, which can reduce the impact of pollutants falling on the vertical direction. The pollution of the whole insulator shed; the big shed (7) completely covers the base (8); the small shed (4), (5), (6), the big shed (3), (7) and the main column ( 2) Both are streamlined, which reduces the capture of pollutants by the insulator and has good self-cleaning ability; all installation metal parts (1) and bases (8) adopt the embedded insert method, which not only reduces the exposure of metal handles On the one hand, the insulation reliability is enhanced, and the mechanical connection strength and the stability in vibration operation can be significantly improved at the same time, and the creepage distance is relatively increased under the same height of the insulator, so that the pollution flashover voltage is increased.

Example 2:

When installed on the roof of the locomotive, the streamlined front round end is installed on the windward side, that is, the streamlined front round end points to the forward direction of the locomotive. The large umbrella skirt (3) and the large umbrella skirt (7), the small umbrella skirt (4), the small umbrella skirt (5) and the small umbrella skirt (6) are flat and streamlined bodies, and the shapes of the big and small umbrella skirts are exactly the same. The ratio of size to size is different.

The horizontal section of the main column (2) is streamlined.

The large umbrella skirts (3) and (7), the small umbrella skirts (4), the small umbrella skirts (5) and the small umbrella skirts (6) are smoothly connected with the main column (2). There are 4 installation holes (9) evenly distributed on the edge on the base (8).

The shape and size of the big umbrella skirt (3) and the big umbrella skirt (7) are identical, and the shape and size of the small umbrella skirt (4) and the small umbrella skirt (5) and the small umbrella skirt (6) are exactly the same.

The small umbrella skirts (4), small umbrella skirts (5) and small umbrella skirts (6) are all distributed on the main column (2) between the large umbrella skirts (3) and the large umbrella skirts (7).

Claims (8)

1. streamlined use for electric locomotive insulator, it is characterized in that: an end of main body column (2) is fixedlyed connected with base (8), the other end of main body column (2) has installation inserts (1), main body column (2) is fixedlyed connected with big full skirt (7) with big full skirt (3), little full skirt (4) and little full skirt (5) and little full skirt (6) successively, leaves distance between the described connection; There is installing hole (9) uniform on the base (8).

2. a kind of streamlined use for electric locomotive insulator according to claim 1, it is characterized in that: described big full skirt (3) and big full skirt (7), little full skirt (4) and little full skirt (5) and little full skirt (6) are flat fairing, the identical just size difference of big or small full skirt shape.

3. according to claim 1,2 described a kind of streamlined use for electric locomotive insulators, it is characterized in that: described main body column (2) horizontal profile is the streamline shape.

4. according to claim 1,2 described a kind of streamlined use for electric locomotive insulators, it is characterized in that: smooth connection between described big full skirt (3) and (7), little full skirt (4) and little full skirt (5) and little full skirt (6) and main body column (2).

5. a kind of streamlined use for electric locomotive insulator according to claim 1 is characterized in that: the edge on the base (8) has 4 installing holes (9) uniform.

6. a kind of streamlined use for electric locomotive insulator according to claim 1 is characterized in that: big full skirt (3) is bigger than following little full skirt (4) and little full skirt (5) and little full skirt (6) area, and full skirt (7) covers base (8) fully greatly.

7. a kind of streamlined use for electric locomotive insulator according to claim 1 is characterized in that: described main body column (2) horizontal profile is the streamline shape.

8. a kind of streamlined use for electric locomotive insulator according to claim 1, it is characterized in that: big full skirt (3) and big full skirt (7) shape size are identical, little full skirt (4) and little full skirt (5) and little full skirt (6) shape size are identical, and described little full skirt (4) and little full skirt (5) and little full skirt (6) are distributed on the main body column (2) between big full skirt (3) and the big full skirt (7).

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