发明名称 |
Hydroball string sensing system |
摘要 |
A hydroball string sensing system for a nuclear reactor that includes stainless tubes positioned to guide hydroball strings into and out of the nuclear reactor core. A sensor such as an ultrasonic transducer transmitter and receiver is positioned outside of the nuclear reactor core and adjacent to the tube. The presence of an object such a bullet member positioned at an end a hydroball string, or any one of the hydroballs interrupts the transmission of ultrasound from the transmitter to the receiver. Alternatively, if the bullet member and hydroballs include a ferritic material, either a Hall effect sensor or other magnetic field sensors such as a magnetic field rate of change sensor can be used to detect the location and position of a hydroball string. Placing two sensors along the tube with a known distance between the sensors enables the velocity of a hydroball string to be determined. This determined velocity can be used to control the flow rate of a fluid within the tube so as to control the velocity of the hydroball string.
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申请公布号 |
US5064603(A) |
申请公布日期 |
1991.11.12 |
申请号 |
US19890397824 |
申请日期 |
1989.08.24 |
申请人 |
WESTINGHOUSE ELECTRIC CORP. |
发明人 |
HURWITZ, MICHAEL J.;EKEROTH, DOUGLAS E.;SQUARER, DAVID |
分类号 |
G21C17/10;G21C17/108 |
主分类号 |
G21C17/10 |
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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