System for detecting concentration of insulating gas mixture in electronic equipment

The utility model provides a system for detecting the concentration of an insulating gas mixture in electronic equipment. The system is characterized by comprising the electronic equipment filled with the insulating gas mixture, a needle valve, a rapid connector, a gas purifier, a heating element, a micro flow heat conduction sensor, a mass flowmeter and a gas recycling device, wherein the heating element and the micro flow heat conduction sensor are arranged in a detection chamber; the insulating gas mixture enters the mass flowmeter after passing through the needle valve, the rapid connector, the purifier and the detection chamber with the heating element and the micro flow heat conduction sensor sequentially from the output end of the electronic equipment; the output end of the mass flowmeter is connected with the gas recycling device. According to the system, the micro flow heat conduction sensor is adopted for detecting the concentration of gases of the insulating gas mixture, a micro amount of gas mixture can be detected, and a great amount of gas mixture is prevented from being discharged out to cause atmospheric pollution. The system is high in detection precision, small in structure and easy to carry.