Explosion-proof and intrinsic safety type high-voltage variable-frequency governor

Abstract

The invention discloses an explosion-proof and intrinsic safety type high-voltage variable-frequency governor which is characterized by comprising an explosion-proof and intrinsic safety type high-voltage variable frequency rectifier box, an explosion-proof high-voltage variable frequency inversion box and an explosion-proof and intrinsic safety type high-voltage variable frequency cooler, wherein the explosion-proof and intrinsic safety type high-voltage variable frequency rectifier box is electrically connected with the explosion-proof high-voltage variable frequency inversion box, and the explosion-proof and intrinsic safety type high-voltage variable frequency cooler is connected with the explosion-proof and intrinsic safety type high-voltage variable frequency rectifier box and the explosion-proof high-voltage variable frequency inversion box through an electric pipeline and a cooling pipeline. A high-voltage variable frequency technology is applied to the field of explosion-proof electrics, thus the explosion-proof and intrinsic safety type high-voltage variable-frequency governor has the pioneering property, belongs to the pioneering invention, fills the home and abroad technologies of the application o of the high-voltage variable-frequency governor to the explosion-proof field, provides a novel technology for the energy saving of the high-voltage explosion-proof motor in an explosive gas environment, and has wide social effect and economic effect.

Description

technical field [0001] The invention relates to an explosion-proof and intrinsically safe high-voltage frequency conversion speed regulator, which belongs to the technical field of explosion-proof electrical and power electronic applications. Background technique [0002] Coal mine underground hoists, belt conveyors, water pumps and fans are widely used. Some hoists, belt conveyors, water pumps and fan motors in underground mines use high-voltage explosion-proof motors. Force-coupled speed regulation method, the above-mentioned speed regulation method mainly converts excess electric energy into heat energy and consumes it. This speed regulation method consumes a lot of energy and has a high failure rate. However, the fan motor does not use the speed regulation method. The adjustment of the air volume is completed by adjusting the opening of the baffle or the angle of the fan blade. The excess air volume is consumed through the auxiliary channel. These are high energy-consumi...

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Problems solved by technology

[0002] Coal mine underground hoists, belt conveyors, water pumps and fans are widely used. Some hoists, belt conveyors, water pumps and fan motors in the mine use high-voltage explosion-proof motors. Force-coupled speed regulation method, the above-mentioned speed regulation method mainly converts excess electric energy into heat energy and consumes it. This speed regulation method consumes a lot of energy and has a high failure rate

However, the fan motor does not use the speed regulation method. The adjustment of the air volume is completed by adjusting the opening of the baffle or the angle of the fan blade. The excess air volume is consumed through the auxiliary channel. These are high-energy-consuming operation methods.

The speed regulation performance of high-voltage frequency converters on high-voltage motors has been well proven. There have been many successful examples of high-voltage frequency converters on the ground. However, according to the relevant regulations on national coal mine safety, ordinary high-voltage frequency converters cannot be directly applied in In the explosive gas environment, it is necessary to develop a high-voltage explosion-proof frequency converter that meets the national standard for explosion-proof electrical appliances before it can be used in the explosive gas environment in coal mines

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