CN103323629A - Test support for lightning arrester test - Google Patents

Abstract

The invention relates to test tools for protection devices of transformer substations, in particular to a test support for a lightning arrester test. The test support for the lightning arrester test comprises two metal supports and a transverse beam (1), wherein each metal support body is composed of a metal hollow rod (2) and a U-shaped steel plate (3), each U-shaped steel plate (3) is upwards concave, the bottom of each U-shaped steel plate (3) is fixed on the top of each metal hollow rod (2), a plug pin hole is formed in the middle of each U-shaped steel plate (3), protruding plug pin threaded rods (5) are arranged on the side walls of the two ends of the transverse beam (1), the plug pin threaded rods (5) are matched with the plug pin holes, bolt installing holes (6) which are used for installing a lightning arrester (8) are formed in the side wall, in the same direction as the plug pin threaded rods (5), of the middle of the transverse beam (1), and one end of the transverse beam (1) is connected with a grounding wire (4). The test support for the lightning arrester test has the advantages that the problem of fixation of the lightning arrester test is solved, operation is simple and rapid, the lightning arrester can be directly inserted, the time for working is reduced, and working efficiency is improved.

Description

Test stand for surge arrester test

technical field

The invention relates to a testing tool for substation protection equipment, in particular to a test bracket for lightning arrester testing.

Background technique

Lightning arresters are equipment used in substations to protect equipment from lightning shock waves and are widely used in power systems. In order to ensure the good performance and reliable operation of the arrester, according to the requirements of the power equipment pre-test regulations, the AC leakage current under the operating voltage of the arrester must be measured every year before the thunderstorm season, so as to ensure the safe operation of the substation equipment and prepare for the peak summer of the power grid. Lay a solid foundation. Because the leakage current test of the arrester is completed through the DC high voltage test, it must be ensured that the arrester is kept at a certain safe distance from the ground before it can be completed. At present, testers often use temporary fixing methods such as winding insulating rods to carry out test work, which is neither safe nor convenient.

Contents of the invention

The object of the present invention is to provide a test bracket for lightning arrester testing, which solves the problems that the current tools used for testing lightning arresters are not fixed, unstable, inconvenient to build, and have potential safety hazards.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a test bracket for lightning arrester testing, comprising two metal brackets and a beam, wherein the two metal brackets are mainly composed of metal hollow rods and U-shaped steel plates respectively, the The U-shaped steel plate is concave upwards and its bottom is fixed on the top of the metal hollow rod. The middle part of the U-shaped steel plate is provided with a pin hole, and the side walls at both ends of the beam are provided with protruding pin screws. The bolt hole is matched, and the middle part of the crossbeam is provided with a bolt installation hole for installing the arrester on the side wall in the same direction as the bolt screw rod, and one end of the crossbeam is connected with a grounding wire.

A further technical solution is that the bottom of the metal hollow rod is provided with a cross-shaped sole composed of two channel steels.

A further technical solution is that there are at least two bolt mounting holes, which are evenly distributed on the side wall in the same direction as the bolt screw in the middle of the beam.

Compared with the prior art, the beneficial effects of the present invention are: simple structure, light weight, only three parts, quick disassembly and installation, easy to carry; low cost, simple manufacture; solves the problem of lightning arrester test fixation, simple and fast operation, lightning arrester Insert and can save working time and improve work efficiency.

Description of drawings

Fig. 1 is a schematic structural view of a test bracket for testing a lightning arrester of the present invention.

Fig. 2 is a schematic diagram of the assembly of the test bracket beam and the U-shaped steel plate for the lightning arrester test of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Fig. 1 and Fig. 2 have shown an embodiment of the test support for lightning arrester test of the present invention: a kind of test support for lightning arrester test, comprises two metal supports and beam 1, wherein said two metal supports are mainly made of metal hollow bar respectively 2 and U-shaped steel plate 3, the U-shaped steel plate 3 is concave upwards and its bottom is fixed on the top of the metal hollow rod 2, the middle part of the U-shaped steel plate 3 is provided with a pin hole, and the two ends of the beam 1 are on the side walls A protruding pin screw 5 is provided, and the pin screw 5 is adapted to the pin hole. The middle part of the beam 1 is provided with a bolt installation hole 6 for installing a lightning arrester 8 on the side wall in the same direction as the pin screw 5. One end of the beam 1 is connected to a ground wire 4 . The U-shaped steel plate 3 is mainly to facilitate the fixing of the beam 1 above and prevent the beam 1 from falling. The insertion of the pin screw 5 into the pin hole can play a fixed role. In Fig. 1, the lightning arrester 8 is connected to the discharge device 9 through a wire, and the discharge device 9 is used to provide analog voltage to arrester 8.

According to another embodiment of the test bracket for lightning arrester testing of the present invention, the bottom of the metal hollow rod 2 is provided with a cross-shaped foot 7 composed of two channel steels, and the cross-shaped foot 7 mainly plays a role of fixing and balancing.

According to another embodiment of the test bracket for lightning arrester testing of the present invention, there are at least two bolt mounting holes 6, which are evenly distributed on the side wall in the same direction as the middle part of the beam 1 and the bolt screw rod 5, so that multiple holes can be installed at one time. A surge arrester was tested, which greatly improved the work efficiency.

Claims (3)

1. a lightning arrester test is with testing support, it is characterized in that: comprise two metal supports and crossbeam (1), wherein said two metal supports mainly are made up of metal hollow stem (2) and U-shaped steel plate (3) respectively, described U-shaped steel plate (3) is fixed on the top of metal hollow stem (2) to fovea superior and its bottom, described U-shaped steel plate (3) middle part is provided with pin hole, the two ends sidewall of described crossbeam (1) is provided with the latch screw rod (5) of protrusion, described latch screw rod (5) is suitable with described pin hole, the middle part of described crossbeam (1) and the unidirectional sidewall of latch screw rod (5) are provided with for the bolt mounting holes (6) that lightning arrester (8) is installed, and an end of described crossbeam (1) is connected with ground wire (4).

2. lightning arrester test according to claim 1 is with testing support, and it is characterized in that: the bottom of described metal hollow stem (2) is provided with by two blocks of channel-section steels forms cruciform sole (7).

3. lightning arrester test according to claim 1 is with testing support, and it is characterized in that: described bolt mounting holes (6) has two at least, is distributed on the middle part and the unidirectional sidewall of latch screw rod (5) of described crossbeam (1).

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