Positive-pressure and explosionproof power generator

Abstract

The invention discloses a positive-pressure and explosionproof power generator. The positive-pressure and explosionproof power generator comprises a power generator body, a positive-pressure purging pipeline, a wiring cabinet, a neutral point cabinet, an excitation system and a positive-pressure purging device and is characterized in that the power generator body comprise a stator, a rotor and anair-air cooler and employs a light box-type structure of an end cover-type bearing, an integral end cover and a steel plate welding engine base, the air-air cooler is placed at the top of the power generator body and employs a pipeline forced ventilation air-air-cooling system, at a steam end of the power generator, a power generator body positive-pressure sealing space is formed by the light box-type structure and the air-air cooler, and at an excitation end of the power generator, an excitation magnetic system positive-pressure sealing space is formed by an excitation machine support and anexcitation machine outer cover. By the structure, the explosionproof performance of the power generator can be effectively improved; and moreover, the positive-pressure and explosionproof power generator is simple to operate and maintain and convenient to install and connect and is good in air tightness, and long-time and safe running of the power generator set in a flammable and combustible environment can be achieved.

Description

technical field [0001] The invention relates to the field of generators, in particular to positive pressure anti-explosion motors. Background technique [0002] Ordinary generators can only be used in conventional safe places, and cannot be used in places with flammable and explosive hazards, such as coal mines, chemical plants, natural gas mining fields, natural gas transmission stations, gas stations, oil refineries, flour / cotton / flax For processing plants, etc., if you want to achieve independent power supply in the above places, you must use explosion-proof motors. Explosion-proof motors are generally divided into flameproof type, increased safety type, positive pressure type and non-spark type according to the explosion-proof principle. The positive pressure type generator can prevent external explosive substances from entering the generator by forming a sufficient positive gas pressure inside the generator In the casing, there is no unified series of positive pressure...

AI Technical Summary

Problems solved by technology

Chinese utility model patent ZL201420028302.5 discloses a positive pressure ventilation control device for explosion-proof motors, including a gas purging device and a pressure relief valve installed on the top of the safety-increasing motor, which can make the generator and the surrounding explosive gas mixture phase isolation, but the equipment is large in size, complex in system, inconvenient to install and maintain, low in protection level, and the airtightness of the motor cannot meet explosion-proof requirements

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