The installation steps of the valve beam, valve stem, connecting plate, valve cover and spring of the steam turbine regulating steam valve, and how to find the opening zero position and connect it to the oil engine lever.

The change range of the secondary oil of the input oil engine is 0.15~0.45MPa. The corresponding relationship between the secondary oil pressure P2 and the cylinder piston rod stroke hZ is related to the feedback plate profile (the trajectory of the contact point between the feedback plate and the roller bearing on the angle lever). According to the steam valve characteristics, There are two types of feedback plate profile lines: straight lines and specific curves. When the feedback plate profile line has been determined, the P2-hZ relationship can be corrected by using the adjusting bolt (2) on the tie rod (1) to change the installation angle of the feedback plate. However, it should be noted that the installation angle of the feedback plate must change. To change the initial value of the oil engine piston action, the secondary oil pressure value when the piston starts to action is usually adjusted through the adjusting screw (10) at the top of the throttle. If necessary, it can also be adjusted with the help of the adjusting nut (11) (the threads at both ends of the adjusting nut are in opposite directions).

1. Install the valve beam from the quick-closing valve, 2. Install the valve stem from the valve cover of the adjustment valve and rotate it 90 degrees. 3. Cover the adjusting valve cover and install the valve stem and connecting plate bracket. 4. Put in the spring bracket, compress the spring according to the parameters, 5. Connect the connecting plate to the lever. 6. Place the oil motor at the top dead center of the stroke, that is, the pointer is at the 0 position. 7. The valve beam is out of contact with the valve disc and the minimum distance is 2mm. 8. Adjust the spherical bearing at the upper end of the oil motor and connect the lever.