Induced nuclear reactions: processes – systems – and elements – With control of reactor – By movement of control element or by release of neutron...
Patent
1987-06-11
1989-05-02
Jordan, Charles T.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By movement of control element or by release of neutron...
G21C 716
Patent
active
048266493
ABSTRACT:
A hydraulic control rod drive for a water-cooled nuclear reactor includes a control valve assembly outside the reactor pressure vessel for influencing the fluid quantity on the pressure side of a fluid pump assembly for adjusting control rods in raising and lowering directions and to maintain a control rod position. A control valve assembly includes the following control branches for actuating each of the control rods: a holding branch connected between a pressure line and a pressure side of a piston/cylinder system, a first fluid throttle and a bypass fluid throttle upstream thereof relative to a drop of the first fluid throttle for discharging into a drain, the first fluid throttle and the bypass fluid throttle having throttle cross sections allowing a fluid flow therethrough sufficient to hold a given control rod in a given position with the fluid pump assembly running; a raising branch connected to the holding branch upstream and downstream of the first fluid throttle, and a series circuit having a raising valve assembly and a second fluid throttle; and a lowering branch connected to the holding branch downstream of the first fluid throttle relative to the drop of the first fluid throttle and discharging into a cooling water reservoir, and a series circuit of a lowering valve and a third fluid throttle. A device is also provided for automatically opening the lowering valve in the lowering branch if the raising valve in the raising branch sticks in an open position.
REFERENCES:
patent: 3844882 (1974-10-01), Bevilacqua et al.
patent: 3940310 (1976-02-01), Irion et al.
patent: 4690794 (1987-09-01), Onodera
11 msr, messen-steuern-regeln (Trade Fairs-Taxes-Rules) VEB Verlag Technik, Berlin, Germany; Vol. 11, Nov. 1978, pp. 638-642.
Batheja Pramod
hrlein Manfred
Rau Peter
Weber Eduard
Greenberg Larence A.
Jordan Charles T.
Klein Richard
Lerner Herbert L.
Siemens Aktiengesellschaft
LandOfFree
Hydraulic control for rod drive for water-cooled nuclear reactor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic control for rod drive for water-cooled nuclear reactor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic control for rod drive for water-cooled nuclear reactor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-583788