Special self-in/out type grounding electrode for grounding impedance test

Abstract

The invention discloses a special self-in / out grounding electrode for a grounding impedance test. The grounding electrode comprises a force application connection part, a limiting blocking plate, a transition part and an embedding part which are sequentially arranged from top to bottom, wherein the force application connection part is of a cylindrical structure, a square groove is formed in the center of the upper end surface of the force application connection part in a digging manner, four symmetrically-distributed spherical crown grooves are dug in the four side walls of the square groove, the transition part is of a cylinder structure, the embedding part comprises a connecting section, a smooth section, a tapping section and threads evenly arranged on the side faces of the connecting section and the smooth section in a surrounding mode, the connecting section, the smooth section and the tapping section are sequentially arranged from top to bottom, the connecting section is of a cylinder structure, the smooth section is of a circular truncated cone structure, the tapping section is of a cone structure, the diameters of the upper end and the lower end of the smooth section are matched with the diameters of the connecting section and the tapping section respectively, and the outer diameter of the thread is not larger than the diameter of the transition part. The grounding electrode has the advantages of being simple in structure, convenient to use, time-saving, labor-saving, high in working efficiency and good in grounding effect.

Description

technical field [0001] The invention belongs to the technical field of electric power equipment auxiliary facilities, and relates to a grounding impedance tester, in particular to a self-inlet and out-going grounding electrode for grounding impedance testing. Background technique [0002] In power production, each substation needs to conduct a grounding impedance test every 6 years to ensure that the substation is in good working condition and ensure the safety of electricity consumption. The grounding electrode for testing is very important when working with the grounding impedance tester in the grounding impedance test. Auxiliary facilities. [0003] Such as Figure 7 As shown, the ground electrode of the prior art is generally a steel nail 11 with a length of about 40 cm. When in use, it is directly driven into the ground with an iron hammer. It is harder and it is more difficult to carry out such work. [0004] Another example is the Chinese invention patent "Grounding...

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Problems solved by technology

[0003] like Figure 7 As shown, the ground electrode of the prior art is generally a steel nail 11 with a length of about 40 cm. When in use, it is directly driven into the ground with an iron hammer. It is harder and it is more difficult to carry out such work

[0004] Another example is the Chinese invention patent "Grounding Electrode" with the authorized announcement number CN107394429B, which includes a grounding steel needle with a pointed structure at the lower end, a hollow structure inside, and a socket at the upper end. The socket; the slide bar, one end of which passes through the impact seat and inserts into the grounding steel needle; the handle bar, whose bottom end is fixedly connected with the other end of the slide bar; the impact hammer, which is fixedly arranged at the bottom end of the handle bar; Fixed; the limit impact plate has a center hole in the middle, and is sleeved on the grounding steel needle through the center hole, and is fixedly connected with the hammer. The design is exquisite, which can greatly reduce the physical consumption of personnel as a whole, and the overall use is very convenient. At the same time, the installation of each structure is stable and the strength is higher; but it does not fully consider that the use environment of the ground electrode is the soil in the field, and it does not take into account that the silt and water in the soil can easily enter the gaps of the ground electrode of the structure. The resulting sticky phenomenon brings inconvenience to long-term use

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