Monitoring device for trace leakage of radioactive substances

The utility model provides a device for monitoring trace leakage of radioactive substances, relates to the technical field of safety detection in the nuclear industry, and aims to solve the problems of false alarm, missing alarm, discrete arrangement, high cost and high practical operation difficulty in monitoring of the radioactive substances in the prior art. Comprising a leakage monitoring station and a sensing pipe for medium trapping, and the leakage monitoring station comprises a carrier filter, a feature identification unit, a physical property detection unit, a medium analysis unit and a control unit; the pressure state and the temperature of the monitored facility are not required; the monitoring technology has no requirement on facility materials; radioactive liquid and gaseous media generated by leakage of radioactive pipelines and facilities can be detected, the pertinence is very high, and the problem of false signals is avoided; trace leakage can be monitored, the leakage state can be found in t