发明名称 |
EDDY CURRENT WORKPIECE POSITIONING APPARATUS |
摘要 |
<p>51,450 A sludge lance nozzle for removing sludge from between the tubes of a nuclear steam generator includes positioning apparatus mounted on top of the nozzle. The positioning apparatus includes a cylindrical eddy-current sensor mounted inside a cup-shaped non-magnetic electrically insulating spacer, which is in turn mounted in a cup-shaped support member fixedly secured to the nozzle. The tubes are arranged in rows and columns with the axes of the tubes in each column lying in a common column plane. The nozzle is moved perpendicular to the column planes close to one of the rows of tubes. The sensor produces a maximum-amplitude output signal when the sensing axis is coplanar with the column plane of a tube in the closest row of tubes and a minimum-amplitude output signal when the sensing axis is midway between adjacent tubes in the closest row of tubes.</p> |
申请公布号 |
CA1245115(A) |
申请公布日期 |
1988.11.22 |
申请号 |
CA19850472673 |
申请日期 |
1985.01.23 |
申请人 |
WESTINGHOUSE ELECTRIC CORPORATION |
发明人 |
CALHOUN, GREGORY L.;CANDEE, CLARK B. |
分类号 |
F22B37/54;B25J11/00;F22B37/02;F22B37/48;F28F1/16;F28G1/16;(IPC1-7):F22B37/48 |
主分类号 |
F22B37/54 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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