Adsorption piezoelectric excitation vibrator

Abstract

Aiming at the deficiencies of the existing excitation vibrator, the present invention provides an adsorption piezoelectric excitation vibrator, including a terminal block, a weight, a fastening screw, more than three ring-shaped piezoelectric ceramic sheets, a stainless steel tank body, and an energy-gathering needle. , rubber sleeve, base, inner magnetic ring, magnetic ring and outer magnetic ring. A circular groove is arranged at one end of the weight, and a threaded hole is opened in the center of the circular groove and connected with one end of the fastening screw. There is a wiring hole in the weight and is connected with the wiring terminal. The middle part of the fastening screw is covered with a piezoelectric ceramic sheet. The other end of the fastening screw is connected with the gathering needle. A rubber sleeve is set on the energy-gathering needle. A base is set on the rubber sleeve. The weight and the bottom are connected together through a stainless steel tank. A magnetic ring groove is opened on the outer end surface of the base, and a magnet ring, an inner magnetic isolation ring and an outer magnetic isolation ring are arranged in the magnetic ring groove. The beneficial effects of the invention are: the product has small volume and wide working frequency, and can monitor the porcelain pillar insulators on-line in real time.

Description

technical field [0001] The invention belongs to the field of electric power detection equipment, and is especially suitable for an excitation device in the detection of high-voltage porcelain post insulators, and in particular relates to an adsorption type piezoelectric excitation vibrator. Background technique [0002] Porcelain post insulators are devices fixed on the structure of power transmission lines for use. There are dozens of types of existing porcelain post insulators, and the installed length varies from 0.6 meters to 10.2 meters. The natural frequency range covers 1-15 kilohertz (KHz) during operation. If you want to carry out mechanical performance tests on porcelain post insulators, you need to place testing equipment on the flange of the porcelain post insulator, but the size of the testing equipment that can be placed on the flange is only Φ30mm (that is, the area is 30×30mm), and the flange and The distance between the sheds above the flanges is generally ...

AI Technical Summary

Problems solved by technology

However, the minimum installation size required by the existing excitation vibrator is Ф50mm, and the highest operating frequency range of the existing excitation vibrator is 10-5000 hertz (Hz), which cannot meet the needs of porcelain post insulators in terms of installation size and operating frequency. Requirements for live disassembly and testing

In addition, the connection between the existing excitation vibrator and the base of the porcelain post insulator is fastened by bolts, which affects the performance detection of the porcelain post insulator

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