Structure for reducing friction force of neutron detector in S tube

The utility model relates to a structure for reducing friction force of a neutron detector in an S tube, which belongs to the technical field of radiation measurement and comprises a head lubricating block and a tail lubricating block which are fixedly mounted at the top end and the bottom end of the neutron detector respectively. The head lubricating block and the tail lubricating block are made of self-lubricating materials and are provided with spherical protrusions, so that when the neutron detector moves in the S pipe, the head lubricating block and the tail lubricating block make contact with the inner wall of the S pipe all the time, and the neutron detector does not make contact with the inner wall of the S pipe. According to the structure provided by the utility model, the friction force between the detector and the tube wall can be reduced to the greatest extent, so that the pushing is smoother, and the detector can reach a preset position more accurately. 本实用新型涉及一种用于减少中子探测器在S管中摩擦力的结构，属于辐射测量技术领域，该结构