Abstract:
A control system for controlling the relative position of a plurality of control rods within a nuclear reactor, thus controlling the energy output of the nuclear reactor. The control system includes a single rod control subsystem for controlling the motion of the individual rods within the nuclear material and a group control subsystem for controlling a plurality of rods of a group. The system includes a circuit for precluding any single rods or group of rods from being actuated in a direction opposite to that commanded to achieve synchronism of that particular rod. Thus, the rods moving from a first position to a second position, a reference position is established which is the average of the position of all the rods and the only rods which will move to position 2 will be those which deviate further from position 2 than the reference level. The system also includes a fault detection system.
Abstract:
A helically coiled flexible electrical conductor extensible and retractable axially to provide electrical connection to a movable element is slidably supported by a rod which extends through it, one end of the coil being fixed and the other end movable. A tube slidably fitted on the rod extends from the movable end through convolutions of the coil and is movable with the movable end of the coil. A knob carried by the rear end of the tube controls the escape of convolutions from the tube during forward movement.
Abstract:
A control system for controlling the relative position of a plurality of control rods within a nuclear reactor, thus controlling the energy output of the nuclear reactor. The control system includes a single rod control subsystem for controlling the motion of the individual rods within the nuclear material and a group control subsystem for controlling a plurality of rods of a group. The system includes a circuit for precluding any single rods or group of rods from being actuated in a direction opposite to that commanded to achieve synchronism of that particular rod. Thus, the rods moving from a first position to a second position, a reference position is established which is the average of the position of all the rods and the only rods which will move to position 2 will be those which deviate further from position 2 than the reference level. The system also includes a fault detection system.
Abstract:
A vertically disposed elongated cylinder includes a hydraulically actuated piston carried by a hollow piston rod which extends downwardly from the piston through friction-holding means consisting of a series of annular collet assemblies which are spring biased to holding engagement with the piston rod. A coupler for the load is operable from the upper end of the cylinder by a coupling rod extending upwardly through the piston and piston rod.
Abstract:
A SOOT BLOWER HAVING A MOTOR DRIVEN CARRIAGE MOUNTED FOR TRAVEL ALONG A FRAME INCLUDING AN ELONGATED GUIDE DISPOSED ADJACENT TO THE PATH OF TRAVEL OF THE CARRIAGE IN WHICH A HELICALLY WOUND CONDUCTOR IS DISPOSED FOR SUPPLYING POWER TO THE CARRIAGE AND WHICH CONDUCTOR IS EXTENSIBLE BETWEEN A SUBSTANTIALLY NESTED COMPACT CONDITION AND AN OPEN EXPANDED CONDITION IN RESPONSE TO THE MOVEMENT OF THE CARRIAGE.