Protective electric energy meter

Abstract

The invention discloses a protection type electric energy meter which comprises an electric energy meter body and a dust removal device, and the dust removal device comprises a fixed frame, a negative plate, a positive plate, an electromagnetic block and a dust removal piece. The fixed frame is arranged outside the filter screen of the electric energy meter body, and the negative plate and the positive plate are respectively mounted on the two inner side walls of the fixed frame, so that in a power-on state, a dust adsorption space formed in the fixed frame can adsorb dust entering the electric energy meter body, and the dust entering the electric energy meter body through the filter screen is reduced. The dust removal piece comprises a magnet block, two first scraping and brushing pieces and a second scraping and brushing piece, the two first scraping and brushing pieces are used for scraping and sweeping the positive plate and the negative plate respectively, and the second scraping and brushing piece is used for scraping and sweeping the filter screen. When the electromagnet is powered on, the first scraping and brushing piece and the second scraping and brushing piece can be driven to do scraping and sweeping movement, the dust collection effect of the positive plate and the negative plate and the dust filtration effect of the filter screen are guaranteed, the whole electric energy meter has efficient dust removal and filtration functions, and the defects of an existing electric energy meter can be overcome.

Description

technical field [0001] The present application relates to the technical field of electric energy meters, in particular to a protective electric energy meter. Background technique [0002] An electric energy meter is an instrument used to measure electric energy, also known as an electric meter, a fire meter, and a kilowatt-hour meter. The meter can be directly connected to the circuit for measurement. In the case of high voltage or high current, the electric energy meter cannot be directly connected to the line, and needs to be used with a voltage transformer or a current transformer. With the rapid development of my country's economy, the demand for electricity in all walks of life is increasing. The phenomenon of unbalanced power consumption over time is also becoming more and more serious. In order to alleviate the increasingly sharp contradiction between power supply and demand in my country, adjust the load curve, and improve the phenomenon of unbalanced power consumpt...

AI Technical Summary

Problems solved by technology

However, this heat dissipation method will cause foreign dust and other impurities to enter the interior of the electric energy meter along with the heat dissipation airflow. Over time, the interior of the electric energy meter is prone to failure due to dust accumulation.

In order to reduce the impact of dust, the existing treatment method is to add a filter screen. Although it can effectively reduce the impact of dust, the filter screen needs to be replaced and cleaned regularly, which increases the workload. The reduction of the filtering effect of the net will still increase the internal dust, and the filter will be blocked by dust over time, which will affect the circulation of the heat dissipation airflow and affect the heat dissipation effect

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