O automatic operation
When the speed of the unit rises, the electrical part of the governor sends a signal to the stepper motor to measure the rotation toward the shutdown, so that (item 17) the stepper motor rotates anticlockwise and drives (item 13) the transfer lever to rotate anticlockwise with (item 12) the rod end as the fulcrum and drives (item 16) the guide valve needle plug to move upward, because (item 21) the main distribution valve piston follows Guide the needle plug on (item 16). Therefore, the lower position of the (item 21) main distribution valve is connected, and the (item 25) servomotor moves to the shutdown side. At the same time, the potentiometer (item 19) connected with the screw pair (item 20) feeds back a position signal to the electrical device to stop the stepper motor (item 17). (item 25) when the servomotor moves to the shutdown side, the connecting rod moves downward under the action of the feedback cone (item 28), and the screw pair (item 20) is used as the fulcrum to drive the transfer lever (item 13) to rotate anticlockwise, at the same time, it drives (item 16) to guide the valve needle plug to move downward, and (item 21) the main pressure distribution valve piston follows the needle plug until the servomotor stops moving back to the middle position When the unit operates stably in a new working condition. When the unit speed drops, it is the opposite of the above situation.
O hydraulic manual operation
When the unit speed rises, rotate (Item 18) hydraulic hand wheel anticlockwise, and the rest of the operation process is the same as the automatic operation.
O manual operation
In the case of no pressure oil source, the unit can be started with a manual operating mechanism. First, turn (item 23) the hand wheel of the manual operating mechanism to move to the left, lock it with (item 24) the spindle locking mechanism, and then turn (item 27) the two-way valve to the movable position, and then turn the hand wheel to open the water guide mechanism, and the starter group to the rated speed. After grid connection, increase the load by turning the hand wheel, otherwise reduce the load, and release After the train, turn the hand wheel in the opposite direction to the fully closed position to stop the unit.
O manual, automatic conversion
From automatic switch to hydraulic manual, just press the manual button to cut off the power supply. Manually switch from hydraulic to automatic, just adjust the electrical opening to the same as the actual opening, and then press the automatic button.
Turn the (item 23) hand wheel of the manual operation mechanism to the manual position manually until it can be locked with (item 24). Turn the (item 27) two-way valve from the hydraulic position to the manual position