Induced nuclear reactions: processes – systems – and elements – With control of reactor – By coolant flow
Patent
1984-07-02
1987-03-17
Cangialosi, Salvatore
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By coolant flow
376216, 376247, 376241, 417 26, 417 27, 417282, 417292, G21C 700, F04B 4900
Patent
active
046506330
ABSTRACT:
A control apparatus and method for restricting liquid flow in a liquid moving pump, usually of the centrifugal type, to prevent pump cavitation and pump prime mover overloading. The control apparatus includes sensors to detect liquid temperature and pressure at the inlet of the pump. It may further include a device such as a current transformer to develop a signal indicative of power consumed by the prime mover of the pump where the prime mover is an electrical motor. The liquid pressure and temperature indications are used to generate a specific indication of the subcooling of the liquid. The temperature indication is used to derive an indication of the instantaneous required subcooling of the pump. The subcooling indication and the required subcooling indication are introduced to a comparator. Should the subcooling of the liquid fail to exceed the required subcooling, a first control signal is generated. Simultaneously, a signal indicating power consumption may be fed to a second comparator along with a power limit signal. Should power consumption exceed the power consumption limit, a second control signal is generated. As long as either control signal is generated, progressive restriction of liquid flow through the pump is effected.
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Cangialosi Salvatore
General Electric Company
James, Jr. Ivor J.
Simkins Raymond G.
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