Nuclear power plant fire alarm detector anti-radiation equipment

The invention belongs to the technical field of nuclear power plant radiation protection and specifically discloses a nuclear power plant fire alarm detector anti-radiation device. The device comprises a lead sheath shielding box, a fire alarm detector circuit board and a detector shielding box. The fire alarm detector circuit board is located in the lead sheath shielding box. The lead sheath shielding box is located in the detector shielding box. The lead sheath shielding box is composed of a lead sheath box top and a lead sheath shell. The lead sheath box top is set on the top of the lead sheath shell. The fire alarm detector circuit board is placed in the lead sheath shell. The lead sheath box top is set on the top of the lead sheath shell. The detector shielding box is composed of a detector top cover, a detector shell and a detector bottom cover. The detector bottom cover is set at the bottom of the detector shell. The detector top cover is set on the top of the detector shell. The device can be applied