CN204649789U - A kind of 10kV Zinc-Oxide Arrester test bracket - Google Patents

Abstract

The utility model discloses a test bracket for a 10kV zinc oxide arrester, which is characterized in that it comprises four insulating columns (3), the lower crosspieces (5) are connected between the lower parts of the insulating columns (3), and the insulating columns (3) The upper parts are mortised and connected to the upper rails (11) through bracket connecting buckles (6), among which 3 upper rails (11) are provided with grounding metal copper bars (4), and the grounding metal copper bars (4) are evenly provided with The arrester placement hole (1), the arrester placement hole (1) is composed of the upper arrester insertion hole (7) and the lower fixing screw hole (8), and the diameter of the arrester insertion hole (7) is larger than the fixing screw hole (8 ), the lower end of one of the upper rails (11) is provided with a grounding body (2), and the grounding body (2) is provided with a grounding screw (9). The utility model is simple in structure, easy to use, high in testing efficiency, and safe It is reliable, saves manpower, improves economic benefits, has a wide range of applications and is effective in use.

Description

A 10kV zinc oxide arrester test bracket

Technical field:

The utility model relates to a test bracket for a 10kV zinc oxide arrester, which is widely used in the field of handover and preventive tests of the 10kV zinc oxide arrester, and belongs to the technical field of high-voltage test sites.

Background technique:

At present, most of the 10kV zinc oxide arresters are pillar-type, with no base on the bottom, and screw rods on the upper and lower sides. When in use, the upper and lower screw rods are connected to the system with screws. When carrying out the arrester test, since the 10kV zinc oxide arrester cannot stand directly, it needs to be fixed and erected in different ways. The common way is to put the arrester on an unreliable structure for testing (such as bench beams, standing iron parts with holes, etc. ). Later, with the development of the test work, a simple lightning arrester test bracket appeared, and its structure was composed of a beam on the top and punched holes and a small bracket with two legs on the bottom. However, due to the relatively simple design of the original arrester bracket, the bottom of the arrester is suspended in the air after being inserted into the arrester placement hole and cannot be completely fixed by the bracket. Under the action of gravity, the upper part of the arrester is in a crooked state, and the bracket is designed as a single row. The center of gravity is unstable, which will cause the arrester to fall off during the test, and it is easy to cause the arrester to fall when it is charged, resulting in the consequences of a sudden grounding in the high-voltage test. In addition, the original 10kV zinc oxide arrester test bracket is generally welded by iron frame, without special grounding device, and it is only connected by binding the ground wire at the bottom of the iron frame, and the contact effect cannot be fully guaranteed. In addition, the bottom of the bracket is not an insulator. When the external grounding lead is not in good contact or the grounding is unreliable, the test bracket will completely become a charged body during the test, causing the high voltage generated during the test to be induced to the tester through the ground and air. , thereby endangering the personal safety of the test personnel. In the past, when the traditional bracket was used to test the arrester, due to various factors such as complicated steps, heavy equipment, and high requirements for the test environment, when the test personnel carried out relevant tests on site in the past, they needed to transport the arrester back to the test workshop for testing. The test was completed. Then transport it to the site by car.

Utility model content:

The purpose of this utility model is to overcome the shortcomings of the above-mentioned existing appliances and provide a 10kV zinc oxide arrester test with simple structure, convenient use, high test efficiency, safety and reliability, manpower saving, economic benefit, wide application range and good use effect. stand.

The purpose of this utility model can be achieved through the following measures: a 10kV zinc oxide arrester test bracket is characterized in that it includes 4 insulating columns, the lower crosspiece is connected between the bottom of the insulating columns, and the upper part of the insulating columns passes through the bracket The connection buckles are tenoned to the upper crosspieces. Three of the upper crosspieces are provided with grounding metal copper bars, and the grounding metal copper bars are uniformly provided with arrester placement holes. The arrester placement holes are connected by the upper arrester insertion hole and the lower fixing screw hole. It is integrally formed, the diameter of the arrester insertion hole is larger than the diameter of the fixing screw hole, and the lower end of one of the upper rails is provided with a grounding body, and the grounding body is provided with a grounding screw.

In order to further realize the purpose of the utility model, the diameter of the arrester insertion hole is 0.2-0.5 mm larger than the diameter of the fixing screw hole.

In order to further realize the purpose of the present utility model, described insulating column is the column that the epoxy resin square tube of 55*38*4mm is made, and the upper crosspiece is made of 20*25*3 U-shaped epoxy resin tube with wall thickness 4mm The crosspiece, its notch is downward, and the lower crosspiece is a crosspiece made of 38*26*4 U-shaped epoxy resin pipes.

Compared with the prior art, the utility model can produce the following positive effects: the utility model can test multiple lightning arresters at the same time, effectively reduce the labor intensity of the staff, greatly improve the test efficiency, and improve the safety factor in the test process, ensuring that the test personnel , Equipment safety and reliability

The utility model can effectively solve various drawbacks in the testing process of the current 10kV zinc oxide arrester, which has:

1. Simple structure and easy to use.

The utility model is composed of an insulating column, a crosspiece, a grounding metal copper row, a lightning arrester placement hole, a grounding body, etc., and has fewer parts and a simple structure. In addition, since the original steel material is replaced by resin material for the column, even if the external grounding is poor, the test voltage will not be induced to the tester through the ground through the legs. And the weight is reduced, and one person can lift it with one hand, which is convenient for carrying in field construction. At the same time, a special grounding device is used to improve the safety during the arrester test.

2. Wide range of application.

It is generally applicable to the currently commonly used 10kV pillar metal zinc oxide arrester.

3. Save manpower and improve efficiency.

In order to prevent the arrester from falling during the test of the original arrester, the arrester needs to be fixed on the bracket. This requires the arrester nut to be removed before the test. After the arrester screw is inserted into the arrester placement hole, the nut is reinstalled to fix it, and the test After removing the lightning arrester, dismantling the nut, and finally restoring it to its original shape and then reinstalling it, the same process needs to be carried out four times, which takes about three to five minutes, which is time-consuming and labor-intensive. Now to replace the lightning arrester, it is only necessary to pass the lightning arrester through the large lightning arrester placement hole, and then insert the screw into the bottom fixing screw hole to tighten it, and the lightning arrester can be installed in a few seconds.

4. Improved security.

The utility model has a rectangular parallelepiped structure, the center of gravity is more stable, and the phenomenon that the lightning arrester will not fall during the test process will not occur. In addition, because the grounding screw is used at the end of the ground body, the grounding wire can be firmly fixed, which eliminates the phenomenon of poor grounding contact of the equipment, and greatly improves the safety factor in the working process.

5. Increased economic benefits.

The utility model has the advantages of simple operation and light weight, and can be carried by test personnel to the test site for on-site testing, which reduces the back and forth of vehicles, saves the cost of vehicles, and improves economic benefits.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is a side view of Fig. 1;

Fig. 4 is a sectional view of the placement hole of the arrester of Fig. 1;

Fig. 5 is a diagram of the use status of the utility model.

Detailed ways:

Below in conjunction with accompanying drawing the embodiment of the present utility model is described in detail:

Embodiment: A 10kV zinc oxide arrester test bracket (see Figure 1-Figure 5), which includes 4 insulating columns 3, the lower crosspieces 5 are connected between the lower parts of the insulating columns 3, and the upper parts of the insulating columns 3 pass through the brackets The connecting buckle 6 is mortised and tenoned to the upper rails 11, and three of the upper rails 11 are provided with grounding metal copper bars 4, and the grounding metal copper bars 4 are uniformly provided with arrester placement holes 1, and the arrester placement holes 1 are inserted into the holes by the upper arrester 7 and the fixing screw hole 8 at the lower part are integrally formed. The diameter of the lightning arrester insertion hole 7 is 0.2~0.5mm larger than the diameter of the fixing screw hole 8. The lower end of one of the upper rails 11 is provided with a grounding body 2, and the grounding body 2 A grounding screw 9 is provided, wherein the insulating column 3 is made of a 55*38*4mm epoxy resin square tube, and the upper rail 11 is made of a 20*25*3 U-shaped epoxy resin tube with a wall thickness of 4mm, and its notch faces Down, the lower crosspiece 5 adopts 38*26*4 U-shaped epoxy resin pipe to make.

When testing the arrester, the arrester 10 is inserted into the arrester placement hole 1, the screw of the arrester 10 is tightened with the fixing screw hole 8, and the arrester 10 can be fixed upright.

Claims (3)

1. A 10kV zinc oxide arrester test bracket, characterized in that it includes 4 insulating columns (3), the lower crosspieces (5) are connected between the lower parts of the insulating columns (3), and the upper parts of the insulating columns (3) are connected to each other. The upper crosspieces (11) are mortised and tenoned through the bracket connection buckles (6), among which three upper crosspieces (11) are provided with grounding metal copper bars (4), and the grounding metal copper bars (4) are uniformly provided with lightning arrester placement holes (1), the arrester placement hole (1) is composed of the upper arrester insertion hole (7) and the lower fixing screw hole (8), the diameter of the arrester insertion hole (7) is larger than the diameter of the fixing screw hole (8) , the lower end of one of the upper rails (11) is provided with a grounding body (2), and the grounding body (2) is provided with a grounding screw (9). 2. A test bracket for a 10kV zinc oxide arrester according to claim 1, characterized in that the diameter of the arrester insertion hole (7) is 0.2-0.5 mm larger than the diameter of the fixing screw hole (8). 3. A 10kV zinc oxide arrester test bracket according to claim 1, characterized in that the insulating column (3) is a column made of epoxy resin square tube of 55*38*4mm, and the upper crosspiece (11 ) is a crosspiece made of a 20*25*3 U-shaped epoxy resin pipe with a wall thickness of 4mm, with the notch facing downwards, and the lower crosspiece (5) is a crosspiece made of a 38*26*4 U-shaped epoxy resin pipe .