Title:
CONTROL ROD POSITION DETECTOR
Document Type and Number:
Japanese Patent JP3272448
Kind Code:
B2
Abstract:
PURPOSE: To provide a detector for continuously detecting the position of a control rod over its whole stroke in a control rod driving mechanism.
CONSTITUTION: For a detector, a noncontact displacement sensor 15 is used. The displacement sensor 15 is fixed to a housing 5a and a sensor probe 15a consisting of magnetic distortion lines extends downward to a control rod drive axis 19. On the other hand from a control rod 6, a position detection rod 13 penetrates the control rod drive axis 19 and extends upward, and at its upper end, a magnet 14 is placed. The position detection rod 13 and the sensor probe 15a have an overlap equivalent to the stroke of the control rod so that the position of a magnet moving along the sensor probe can be detected continuously within its travel.
Inventors:
Kouichi Nakai
Application Number:
JP5021693A
Publication Date:
April 08, 2002
Filing Date:
February 16, 1993
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
G01D5/12; G21C17/10; (IPC1-7): G21C17/10
Domestic Patent References:
| JP2281197A | ||||
| JP56145313A | ||||
| JP5935190A |
Attorney, Agent or Firm:
Haruo Kawai
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