Neutron source device for well logging and storage tank

The utility model provides a neutron source device for well logging, which comprises a source body, a connecting cavity for inserting a neutron source probe is arranged at the center of the source body, a plurality of groups of clamping grooves are axially arranged on the side wall of the connecting cavity at equal intervals, and a clamping component for fixedly mounting the neutron source probe is fixedly arranged in each group of clamping grooves. An unlocking mechanism used for unlocking the clamping assembly is fixedly arranged on the source head body. A containing cavity used for storing a neutron source is arranged in the source head body. According to the utility model, the plurality of groups of lock tongues arranged in the source head main body are matched with the limiting grooves arranged on the neutron source probe tube, so that the bottom of the neutron source probe tube is fixed with the source head main body; by means of the unlocking mechanism, an operator can press a sliding rod downwards, an