Multifunctional gaseous tritium and C14 sampling device and method for nuclear power station

The invention belongs to the technical field of nuclear power station effluent monitoring, and particularly relates to a nuclear power station multifunctional gaseous tritium and C14 sampling device and method. The device comprises a first tritium carbon sampling loop and a second tritium carbon sampling loop which are respectively connected with a first chimney sampling loop and a second chimney sampling loop; the first tritium and carbon sampling loop is connected with a first tritium sampler and a first carbon 14 sampler which are connected in parallel; the second tritium and carbon sampling loop is connected with a second tritium sampler and a second carbon 14 sampler which are connected in parallel; the pipeline where the first tritium sampler is located, the pipeline where the second tritium sampler is located, the pipeline where the first C14 sampler is located and the pipeline where the second C14 sampler is located are disconnected, and the two disconnected ends are provided with a first quick connec