Aluminum equalizing ring for insulators

Abstract

The invention relates to the technical field of power transmission protection equipment and discloses an aluminum equalizing ring for insulators, which comprises an equalizing ring body. The equalizing ring body includes a small equalizing ring, a medium equalizing ring and a large equalizing ring; adjusting bars are threadedly mounted at the bottom of the small equalizing ring in nested manner; afixing socket bar is movably mounted at the bottom of each adjusting bar in sleeving manner; the bottoms of the fixing socket bars are fixedly connected to the top of the medium equalizing ring. Thealuminum equalizing ring for insulators is provided with openings which may act as discharge gaps; when too much electric charges are accumulated, self-discharging can occur to allow relief; the operation demand of a +/-8000 kV DC line can be well met; the ends of insulators can be well protected from being eroded by an electric field; online replacement and installation are also facilitated; linemaintenance cost is greatly reduced; the good material also helps effectively avoid rusting and ensure long-term reliable operation; the aluminum equalizing ring for insulators has good market application prospect and social and economic benefits.

Description

technical field [0001] The invention relates to the technical field of power transmission protection equipment, in particular to an aluminum voltage equalizing ring for an insulator. Background technique [0002] Composite insulator is a very important equipment in transmission line, and the problem of voltage equalization shielding is an important factor affecting the safety of transmission line operation. The electric field problem of the composite insulator is mainly the electric field at the end of the fitting. The electric field intensity on the fitting is relatively large. In the case of dry air, corona may appear on the fitting. Therefore, it is necessary to try to reduce the electric field intensity at the end of the fitting. , so that the electric field intensity at the end of the fitting is reduced. [0003] At present, in the face of 800kV or so DC UHV transmission network lines, the existing voltage equalizing rings and composite insulators obviously cannot meet...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an aluminum voltage equalizing ring for insulators, which has the advantages of wide application range, placement of sundries to interfere with insulators and low production cost, and solves the problem of existing voltage equalizing rings faced with about 800kV DC UHV transmission network lines at present. Rings and composite insulators obviously cannot meet the needs of UHV transmission lines, and the fault tripping of the circuit mainly occurs in the voltage equalizing ring. The overvoltage grading ring falls on the insulator located under the grading ring, which is the main reason for affecting the tripping of the line. At the same time, because the voltage and current in different circuits are inconsistent, in order to meet the uniformity, it is often necessary to produce voltage grading of different sizes. ring, which greatly increases the diversification of production molds and increases the production cost of equalizing rings

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