Self-starting type sampling and analyzing device for measuring concentration of hydrogen in containment

The utility model discloses a self-starting type sampling and analyzing device for measuring the concentration of the hydrogen in containment, relates to the technical field of the measurement of the hydrogen in the containment used under the accidental state of a nuclear power plant, and adopts a measurement mode of gas extraction. A pressure switch is arranged on a sampling pipeline to acquire the environment condition in the containment, the sampling pipeline with a temperature-preserving processing function extracts the gas in the containment by piping design, a steam analytical sensor measures the volume percent of the steam, a preprocessing unit preprocesses the gas to be a normal-temperate and normal-pressure state, a hydrogen analytical sensor measures the volume concentration of the hydrogen in the preprocessed gas, and a microprocessor confirms the current volume concentration of the hydrogen in the containment according to a measurement result of the sensor, outputs and displays. The device is in pressure linkage with the sampling pipeline, thereby realizing the self-starting and the stop controlling, and improving the artificial reliability.