Thermal conductivity type hydrogen purity analyzer

The invention provides a thermal conductivity type hydrogen purity analyzer which comprises a heat preservation and insulation box body, a thermal conductivity induction mechanism is arranged in the heat preservation and insulation box body, the input end of the thermal conductivity induction mechanism is connected with the output end of a filter through a pipeline, the input end of the filter is connected with an air inlet valve through a pipeline, and a check valve is arranged at the rear end of the air inlet valve. According to the invention, the working temperature of equipment is ensured not to be influenced by the external environment temperature through the thermal insulation box body, so that the working temperature of the equipment is constant, and the measured value is not influenced by the environment temperature; through the anti-interference multi-layer mainboard mechanism, the work is stable and is not interfered by external signals; the multiple damping fixing block units are matched with the d