Generator insulation overheating monitoring device based on radiation principle

The utility model relates to a generator insulation overheating monitoring device based on a radiation principle. The generator insulation overheating monitoring device comprises a gas detection loopand a monitoring electronic circuit, wherein the gas detection loop comprises an ion chamber and a micro-current amplifier, and the monitoring electronic circuit comprises a microprocessor and a double-integral converter; wherein the air inlet pipe of the ion chamber is suitable for being communicated with a cooling gas loop of the generator and is used for guiding a cooling gas medium flowing through the generator into the ion chamber; a radioactive source for bombarding the cooling gas medium into positive and negative ion pairs is arranged in the ion chamber, and the ion chamber is providedwith a discharge electrode for applying a direct-current electric field and a collector for collecting current formed by directional movement of the positive and negative ion pairs under the direct-current electric field; the