CN204422665U - High-tension laboratory Zinc-Oxide Arrester special test worktable - Google Patents

Abstract

The utility model discloses a special test workbench for a zinc oxide lightning arrester in a high-voltage laboratory. Since a first small-diameter bolt mother is arranged on the upper end of a working disc, and a second large-diameter bolt mother is arranged on the upper end of the first small-diameter bolt mother, the feature is that : When the bottom bolt of the surge arrester to be verified is screwed into the fixed bolt on the working disc, the second large diameter bolt on the upper end of the first small diameter bolt can realize the tightening of the verified lightning arrester lead bolt and its own In the thread hole, that is: the small-diameter bottom bolt can be directly screwed into the first small-diameter bolt mother through the inner cavity of the second large-diameter bolt mother, and the thick-diameter bottom bolt can be directly screwed into the second large-diameter bolt mother. Also owing to having adopted the voice safety distance-limiting alarm set at the bottom side of the working disc, its feature is: when the circular electric contact of the first striker and the electric contact on the second striker with electric contact at the end After full contact, the voice safety limit alarm can realize the protection of the occasion and increase the safety.

Description

Special test bench for zinc oxide arrester in high voltage laboratory

Technical Field The utility model relates to a laboratory, directly to a special test bench for zinc oxide arresters in a high-voltage laboratory, and is especially suitable for special testing of zinc oxide arresters in the electric power industry.

Background technology In the power transmission and distribution power system, the safety of high-voltage transmission lines in operation during the thunderstorm season, the safety of power transformation equipment, the safety of power distribution equipment and production equipment are all realized by lightning arresters installed within a certain range. The lightning arresters used before the drama are generally of porcelain structure, and the lightning arresters with porcelain structure have been widely used by people. With the continuous development of society and the continuous progress of science and technology, zinc oxide arresters came out, and they are now widely used in power transmission and distribution power systems. So far, arresters with porcelain structures have also been eliminated. When the zinc oxide arrester is in operation for a certain stage, it is necessary to conduct a full leakage current, resistive current, capacitive current, phase angle, resistive current peak value, full current peak value, fundamental wave active power, and harmonic active power arrester characteristics. Comprehensive test, in order to meet the requirements of AC and DC characteristics measurement of arrester in "Preventive Test Regulations for Electric Equipment". When carrying out the test of zinc oxide arrester, it is generally to place the arrester on a metal frame and then connect to the set test high voltage for testing. In the long-term test work, people also found that although the arrester was placed on the metal frame for the test, the expected purpose was not achieved. However, there are certain unsafe disadvantages in the place and the test metal structure: 1. There is no special test bench in this system; For high-voltage occasions, if there is no voice safety warning within the range of high-voltage occasions, unforeseen unsafe accidents may easily occur.

SUMMARY OF THE INVENTION The purpose of this utility model is to provide a special test workbench for zinc oxide arresters in a high-voltage laboratory, which can effectively solve the following problems: 1. There is no special test workbench in this system; Easy to move, easy to roll the wire, three, the test voltage used in the occasion is an increased voltage occasion, there is no voice safety warning within the scope of the increased voltage occasion, and unforeseen unsafe accidents may easily occur.

The purpose of this utility model is achieved in this way: the special test workbench for zinc oxide lightning arresters in the high-voltage laboratory has a working disk and a circular bolting cylinder, the upper end of the working disk is provided with a first small-diameter bolt mother, and the upper end of the first small-diameter bolt mother is Set the second large-diameter bolt mother, set the ground wire pressure bolt at one end of the working disc, set the circular locking tube at the middle of the bottom of the working disc, set the first ram in the circular tying tube, and set the bottom end of the first ram. Round electric contacts, first support spring is set outside the first lance, the second lance with electric contact at the end is set at the lower part of the first lance, and the second support is set outside the second lance with electric contact at the end spring, the bottom of the working disc is provided with outriggers of the same style, and one side of the bottom of the working disc is provided with a voice safety limit alarm.

Since the utility model adopts the first small-diameter bolt mother on the upper end of the working disk, and the second large-diameter bolt mother on the upper end of the first small-diameter bolt mother, the utility model is characterized in that: when the bottom bolt of the lightning arrester to be verified is screwed into the working disk When fixing the fastening nut, the second large-diameter bolt on the upper end of the first small-diameter bolt can realize that the lightning arrester lead bolt to be verified can be screwed firmly into its own wire hole, that is, the small-diameter bottom bolt can pass through the second large-diameter bolt. The inner cavity of the diameter bolt mother is directly screwed into the first small diameter bolt mother, and the thick diameter bottom bolt can be directly screwed into the second large diameter bolt mother.

And because the first lance is set in the circular bolting tube, the bottom end of the first lance is provided with a circular electric contact, and the bottom of the first lance is provided with a second lance with an electric contact at the end, which is characterized in that: When the bottom bolt of the lightning arrester to be verified starts to be screwed into the inner wire of the first small-diameter bolt mother or the second large-diameter bolt mother, the first striker can realize its own top pressure and the round electric contact can directly contact the end Electrical contacts on the second striker with electrical contacts.

Also owing to having adopted the voice safety distance-limiting alarm set at the bottom side of the working disc, its feature is: when the circular electric contact of the first striker and the electric contact on the second striker with electric contact at the end After full contact, the voice safety limit alarm can realize the protection of the occasion and increase the safety.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawing is a schematic diagram of the structure of the high-voltage laboratory lightning arrester verification safety voice warning test bench of the present invention. The following will further explain the present invention in conjunction with the accompanying drawings.

Specific implementation methods The upper end of the working disc 1 is provided with a first small-diameter bolt mother 2, the upper end of the first small-diameter bolt mother 2 is provided with a second large-diameter bolt mother 3, one side of the working disc 1 is provided with a ground wire pressure bolt 4, and the working disc 1 The middle position of the bottom is provided with a circular tie tube 5, the first lance 6 is set inside the circular tie tube 5, the bottom end of the first lance 6 is provided with a circular electric contact 7, and the first support spring 8 is set outside the first lance 6, The bottom of the first lance 6 is provided with a second lance 9 with an electric contact at the end, and the second lance 9 with an electric contact at the end is provided with a second support spring 10, and the periphery of the bottom of the working disk 1 is provided with the same pattern. 3 supporting legs 11, a side end of the bottom of the working disc 1 is provided with a voice safe distance-limiting alarm 12.

The installation process of the utility model is as follows: firstly, the first small-diameter bolt mother 2 at the upper end of the working disk 1 is welded firmly to the middle upper plane of the working disk 1, and the second large-diameter bolt mother 3 is welded firmly to the upper end surface of the first small-diameter bolt mother 2 , the circular tie tube 5 is fixed to the middle position of the bottom of the working disk 1, the first support spring 8 is placed with the outer end of the first striker 6 and then firmly connected to the inner upper end of the circular tie tube 5, and the second support spring 10 Set with the outer end of the second ram 9 and then firmly connect with the inner lower end of the circular tie tube 5, install a fixed voice safety distance-limiting alarm 12 at the bottom side of the working disk 1, and finally connect the voice safety distance-limiting alarm 12 with the After the first lance 6 and the second lance 9 with electric contacts at the end communicate with each other, the installation can be completed.

The use process of the present utility model is: when the zinc oxide arrester needs to be tested, the bottom bolt 14 of the lower end of the zinc oxide arrester 13 can be screwed into the second large-diameter bolt mother 3 (the second large-diameter bolt can be passed through when the bottom bolt 14 is a small diameter The female 3 is directly screwed into the first small-diameter bolt female 2), and when the bottom bolt 14 of the lower end of the zinc oxide arrester 13 is screwed into the second large-diameter bolt female 3, the end of the zinc oxide arrester 13 bottom bolt 14 immediately presses down on the first As soon as the upper end of the lance 6 is reached, the first lance 6 moves slowly downwards, and then the zinc oxide arrester 13 continues to be screwed downwards, and the round electric contact 7 at the bottom of the first lance 6 contacts the first lance with an electric contact at the end. Two lances 9, after the first lance 6 and the second lance 9 with electric contacts at the end contact fully, connect with the first lance 6 and the second lance 9 with the ends. Wire (not marked) conducts the voice safety distance-limiting alarm 12, and now the voice safety distance-limiting alarm 12 promptly sends a letter sound, and personnel evacuates.

Claims (1)

1. The special test workbench for zinc oxide surge arresters in the high-voltage laboratory has a working disc (1) and a circular bolting cylinder (5), and is characterized in that: the upper end of the working disc (1) is provided with a first small-diameter bolt mother (2 ), the upper end of the first small-diameter bolt (2) is provided with the second large-diameter bolt (3), the side end of the working disc (1) is provided with the ground wire pressure bolt (4), and the middle position of the bottom of the working disc (1) is set Circular tie tube (5), the first lance (6) is arranged in the circular shank (5), the bottom end of the first lance (6) is provided with a circular electric contact (7), the first lance (6) The first support spring (8) is arranged on the outside, the second lance (9) with electric contacts at the end is provided at the bottom of the first lance (8), and the second lance (9) with electric contacts at the end is provided externally The second support spring (10), the bottom of the working disk (1) is provided with supporting legs (11) of the same style, and the side end of the bottom of the working disk (1) is provided with a voice safety limit alarm (12).