A speed sensor that is used for nuclear power plant shielding cooling agent pump

The utility model discloses a speed sensor that is used for nuclear power plant shielding cooling agent pump, including response portion and joint, response portion is including being cylindrical permanent magnet, the both ends of permanent magnet are fixed with upper pole boots and lower end terminal respectively, it has the coil still to twine on the permanent magnet, still include the intermediate junction section, the intermediate junction section includes the protection tube, the protection tube is the tube -shape, still is provided with two wires in the protection tube, the upper pole boots meet with the protection tube, and the axis collineation of the axis of permanent magnet and protection tube, and two ends of coil link to each other with the joint through different wires respectively. This speed sensor can be applicable to less installation space, can be by convenient installing on the canned motor pump. 本实用新型公开了种用于核电厂屏蔽冷却剂泵的转速传感器，包括感应部及接头，所述感应部包括呈柱状的永磁体，所述永磁体的两端分别固定有上极靴和下极靴，所述永磁体上还缠绕有线圈；还包括中间连接段，所