TURBOPLANT ROTOR TURNING DEVICE Russian patent published in 2003 - IPC

FIELD: mechanical engineering; turbines. SUBSTANCE: device is designed for turning turboplant rotor after shutting down of turbine. Proposed device contains barring gear electric motor, control time forming unit, tachogenerator connected with turbine rotor, rotor dynamic characteristics analyzer placed in circuit connecting tachogenerator with control time forming unit. Turboplant rotor turning device contains also control unit connected to electric motor of barring gear and coupled with one of outputs of control time forming unit. It has also turning angle pickup connected to turboplant rotor, acceleration pickup whose input is connected to one of tachogenerator outputs, jerk pickup whose input is connected to acceleration pickup output, four summing up elements some inputs of which are connected to corresponding outputs of turning angle pickup, tachogenerator, acceleration pickup and jerk pickup, and other inputs, to corresponding outputs of control time forming unit. Outputs of summing up elements are connected to corresponding inputs of control unit and turning angle, speed, acceleration and jerk pickup whose outputs are connected to corresponding inputs of control, time forming unit. EFFECT: provision of device featuring higher accuracy of turning owing to automatic control of turning angle, speed, acceleration and jerk. 1 dwg