Electrode for sand-filled explosion-proof electrical dielectric strength testing device

Abstract

The utility model provides an electrode for a sand-filled explosion-proof electrical dielectric strength testing device, and relates to the technical field of electrical equipment. The electrode for the sand-filled explosion-proof electrical dielectric strength testing device comprises two parallel electrode plates, an insulating plastic plate and an insulating plastic supporting block, a binding post is installed above each electrode, the upper end of each binding post is a wiring end, the portion, located below the wiring end, of the surface of each binding post is sleeved with an insulating plastic sleeve, and the insulating plastic sleeve is sleeved with an insulating plastic supporting block. And the insulating plastic supporting block is mounted on the surface of the insulating plastic sleeve through the mounting hole. According to the electrode for the sand-filled explosion-proof electrical dielectric strength test device, the two electrodes are fixed on the insulating plastic supporting block to ensure that the two electrodes are parallel and are in the same horizontal plane, an integrated structure is formed to facilitate test use, the binding posts are wrapped by the insulating plastic sleeves respectively, the two binding posts are separated by the insulating plastic plate, and the two binding posts are arranged in the same horizontal plane. The electrical gap is ensured to be large enough without mutual influence, the insulativity is good, and the accuracy of experimental results is ensured.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, specifically to an electrode for a dielectric strength testing device of a sand-filled explosion-proof electrical device. Background Technology

[0002] Sand-filled electrical equipment is a specialized type of explosion-proof electrical equipment with specific applications in industrial enterprises. The term "sand-filled explosion-proof" refers to a design where electrical components are fixed in appropriate locations inside the equipment and completely buried with filling material to prevent them from igniting external flammable gas-air mixtures. The explosion-proof performance of the electrical equipment is ensured by the filling material in the sand-filled structure; therefore, selecting appropriate materials is crucial.

[0003] To verify the excellent electrical insulation properties of the filler material, according to Clause 5.2.2 of GB / T3836.7-2017, a dielectric strength test should be performed on the filler material after filling. Due to the small market demand, the proportion of sand-filled explosion-proof electrical products certified is relatively small. In the past, the electrodes used in the dielectric strength testing equipment for sand-filled explosion-proof electrical equipment were simple fixtures made only when needed; these were difficult to fix and install, the conductivity of the material was difficult to guarantee, and it was difficult to maintain the parallelism and level of the two electrodes. Furthermore, poor insulation at the voltage application point often affected the test results, endangering the personal safety of the test personnel, while significantly increasing time costs, wasting manpower and resources, and adding extra costs for customers. Utility Model Content

[0004] The purpose of this invention is to provide an electrode for a dielectric strength testing device for sand-filled explosion-proof electrical equipment, which can be easily installed and fixed, has good insulation, and ensures the accuracy of experimental results.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electrode for a dielectric strength testing device of a sand-filled explosion-proof electrical device, comprising two parallel electrode plates, an insulating plastic plate, and an insulating plastic support block. Each electrode plate has a terminal block mounted on its upper surface. The upper end of each terminal block is a connection terminal, and the surface of the connection terminal is threaded. An insulating plastic sleeve is fitted over the portion of the terminal block surface below the connection terminal. Two mounting holes adapted to the terminal blocks are formed on the upper surface of the insulating plastic support block. The insulating plastic support block is mounted on the surface of the insulating plastic sleeve through the mounting holes. A slot is formed on the insulating plastic plate, and the insulating plastic plate is mounted on the insulating plastic support block between the two terminal blocks through the slot.

[0006] Specifically, the electrode plate is a brass cuboid with a length of 50mm, a width of 5mm, and a height of 10mm.

[0007] Specifically, the insulating plastic support block is used to fix the position of the two electrode plates, ensuring that the distance between the two electrode plates is mm, and that the bottom surfaces of the two electrode plates are in the same plane.

[0008] Compared with existing technologies, the electrodes used in this dielectric strength testing device for sand-filled explosion-proof electrical equipment have the following advantages:

[0009] The dielectric strength testing device for a sand-filled explosion-proof electrical device uses electrodes that are fixed to two electrode plates by insulating plastic support blocks to ensure that the two electrodes are parallel and on the same horizontal plane, forming an integrated structure for convenient testing. The terminals are covered with insulating plastic sleeves, and the two terminals are separated by insulating plastic plates to ensure that the electrical clearance is large enough to prevent mutual interference, and that the insulation is good to ensure the accuracy of the test results. In addition, the electrode material is brass, which has good conductivity. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a side view of the present invention.

[0012] Among them, 1. Electrode plate; 2. Terminal; 3. Insulating plastic plate; 4. Insulating plastic support block; 21. Terminal; 22. Insulating plastic sleeve; 31. Slot; 41. Mounting hole.

[0013] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. It should be noted that in the description of the present utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. In addition, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0016] like Figure 1-2 As shown in the figure, this utility model embodiment provides an electrode for a dielectric strength testing device of a sand-filled explosion-proof electrical device, including two parallel electrode plates 1, an insulating plastic plate 3, and an insulating plastic support block 4. Each electrode plate 1 has a terminal 2 installed on its top. The upper end of the terminal 2 is a terminal 21, and the surface of the terminal 21 is threaded. The thread at the terminal 21 of the terminal 2 allows the user to directly fix the wire with bolts or clamps, improving the ease of operation. The electrode plate is a brass cuboid with a length of 50mm, a width of 5mm, and a height of 10mm. The use of brass material for the electrode plate 1 makes it less prone to deformation and damage, has good conductivity, and is corrosion resistant.

[0017] An insulating plastic sleeve 22 is fitted over the portion of the terminal 2 below the terminal 21. Two mounting holes 41, compatible with the terminal 2, are formed on the upper surface of the insulating plastic support block 4. The insulating plastic support block 4 is mounted on the surface of the insulating plastic sleeve 22 through the mounting holes 41. The insulating plastic support block 4 is used to fix the positions of the two electrode plates 1, ensuring a distance of 10mm between them and that the bottom surfaces of the two electrode plates 1 are in the same plane. By fixing the two electrode plates to the insulating plastic support block 4, the two electrode plates 2 are ensured to be parallel and on the same horizontal plane, forming an integrated structure for convenient testing. A slot 31 is formed on the insulating plastic plate 3, which is mounted on the insulating plastic support block 4 between the two terminal plates 2 through the slot 31. The insulating plastic plate separates the two terminal plates 2, and the insulating plastic sleeve 22 covers part of the terminal plates 2, ensuring a sufficiently large electrical clearance, preventing mutual interference, providing good insulation, and guaranteeing the accuracy of the experimental results.

[0018] When performing dielectric strength tests on sand-filled explosion-proof electrical equipment, after the operator places the electrode plate 1, an insulating plastic sleeve 22 is fitted onto the surface of the terminal block 2, and the insulating plastic support block 4 is installed above the terminal block 2. After the insulating plastic support block 4 is installed, the position between the two electrode plates 1 can be quickly fixed, facilitating the installation. Then, the insulating plastic plate is placed on the insulating plastic support block 4. After the sand is buried, the test leads of the withstand voltage tester can be quickly fixed to the terminals 21 of the terminal block 2. When voltage is applied, the insulating plastic plate 4 and the insulating plastic sleeve 22 between the two electrode plates 1 can effectively prevent mutual interference from affecting the test results, ensuring the accuracy of the test results.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electrode for a dielectric strength testing device of a sand-filled explosion-proof electrical device, characterized in that: The device includes two parallel electrode plates (1), an insulating plastic plate (3), and an insulating plastic support block (4). Each electrode plate (1) has a terminal (2) installed on its upper part. The upper end of the terminal (2) is a terminal (21), and the surface of the terminal (21) is threaded. The part of the terminal (2) below the terminal (21) is fitted with an insulating plastic sleeve (22). The upper surface of the insulating plastic support block (4) has two mounting holes (41) that are compatible with the terminal (2). The insulating plastic support block (4) is installed on the surface of the insulating plastic sleeve (22) through the mounting holes (41). The insulating plastic plate (3) has a slot (31), and the insulating plastic plate (3) is installed on the insulating plastic support block (4) between the two terminals (2) through the slot (31).

2. The electrode for a dielectric strength testing device of a sand-filled explosion-proof electrical device according to claim 1, characterized in that: The electrode plate (1) is a rectangular prism made of brass with a length of 50mm, a width of 5mm, and a height of 10mm.

3. The electrode for a dielectric strength testing device of a sand-filled explosion-proof electrical device according to claim 1, characterized in that: The insulating plastic support block (4) is used to fix the position of the two electrode plates (1), ensuring that the distance between the two electrode plates (1) is 10mm and that the bottom surfaces of the two electrode plates (1) are in the same plane.

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