Introduction QG type of ball valve control cabinet as Turbine inlet valve to open and close with. All control elements and cabinet components and systems for the secondary protection circuit power supply and the hydraulic pressure of the oil equipment, in accordance with the procedure provided for automatic operation and issues a signal indicating valve open or closed position. Features 1, the cabinet of high-tech, the introduction of technology from the United States Cartridge valve combination, mechatronics, reasonable structure, reliable performance, easy operation, before and after the cabinet door, easy to install, repair and maintenance of cabinet components. 2. Using the lever of the main valve to regulate the flow, to achieve valve opening and adjust off time. 3, the control valve operation control cabinet PLC as the core control unit. Technical parameters 1, the maximum working fluid pressure: 2.5 Mpa, 4.0Mpa, 6.4Mpa, 10Mpa 2, the maximum working pressure: 2.5 Mpa, 4.0Mpa, 6.4Mpa according to user requirements (required head height when ordering) 3, the operating power. :. DC110V, DC220V 4, the operating servomotor passage Nominal by:. Φ25, Φ32, Φ40, Φ50 5, installation size: 580 × 340 (4-Φ14) 6, Net weight:.. 100 ~ 200KG works valve open When the process when satisfy the following conditions, allowing the ball valve open lock spindle 1. Unplug place, limit switch (XK10) are closed. 2. First determine turbine shutdown valve in the fully closed position, the vanes (or needle) is not open. 3. Unit without incident. Valve open: meet the conditions, the bypass valve pull out, the solenoid valve coil (1DT) action, working seal pull solenoid valve coil (6DT) action, pull out the sealing work place (XK6) is closed, pull out the sealing work place lights (HL6) light, and to issue a seal pulled-position signal, when the volute (or needle pipes) the pressure valve before the pressure is approximately equal to the pressure annunciator YK-pressure signal emitted by the setting value, platen signal Indicator (HL11) light. At this valve open solenoid valve coil (3DT) action to promote the spool to the other side, the pressure oil through the switching valve start, the switching valve is switched, through goals valve servomotor oil to the open side, so that the ball valve is opened. When the ball valve is fully open, the end of the servomotor limit switch (XK3) normally open contact closure, valve open place lights (HL3) light, and issued open valve position signal, ball valve open relay reset, then the bypass solenoid valve is closed valve coil (2DT) action to promote the spool will return, the bypass valve is closed in place (XK2) long open contact closure, the bypass valve is closed lights (HL2) light, and emits signals bypass valve closed. Work seal into the solenoid valve coil (5DT) action, working the seal into place (XK5) is closed, the seal put in place work lights (HL5) light, and to issue a seal put in place signals. At this time, the ball valve fully open valve closed: Operating seal pull solenoid coil (6DT) action, pull out the sealing work place (XK6) is closed, pull out the sealing work place lights (HL6) light, and pull out the seal in place to issue signal. Ball close the solenoid valve coil (4DT) action to promote the spool will return, pressure oil into the switching valve closed end, the switching valve is switched, through goals valve servomotor to shut down the oil side, so that the ball valve is closed. When the ball valve reaches the fully closed position, the end limit switch points (XK4) normally open contact closure, the relay is switched off lights in place (HL4) light, and emits a signal valve is fully closed, the ball valve relay reset, this time, the work put into sealed solenoid coil (5DT) action, the work put in place to seal the limit switch (XK5) is closed, the seal put in place work lights (HL5) light, and to issue a seal put in place signals. Manual locking input, (XK9) closed, locked into place, locking into place indicator (HL9) light. When the unit too fast, mounted on the machine spindle mechanical hydraulic overspeed protection device movement, mechanical hydraulic overspeed protection device hydraulic valve operation, the drive control cabinet hydraulic part of the input valve to close the valve. Valve repair seal closed first judges, ball valves and locking valves are in the OFF state, toggle the switch to put the state seal valve maintenance, repair seal into the solenoid valve coil (7DT) operation, maintenance seal input, overhaul seal put in place the limit switch (XK7 ) is closed, the seal put in place inspection lights (HL7) light, and emits a signal input overhaul seal, then into the maintenance state maintenance valve seal pull toggle switch to overhaul the state seal pull out, pull out the manual lock, (XK10) Open locking pull in place, pull out the lock into place indicator (HL10) light. Overhaul seal pull solenoid valve coil (8DT) operation, maintenance seal pull out, pull out the overhaul seal in place limit switch (XK8) is closed, pull out the seal in place overhaul lights (HL8) on, and issue inspection seal pull signal at this time Exit maintenance state. Opening and closing of the ball valve can be operated manually via electromagnetic pressure valve operating handle and buttons, the switching process are the same as when Auto. Spherical valve control cabinet installation dimensions schematic spherical valve control cabinet installation and repair 1, according to station layout, the balance in the cabinet installation, based on the adjusted level locking bolt. 2. Rotate the left and right adjustment lever can enter servomotor flow restrictor adjustment, clockwise rotation around the lever into the servomotor flow, otherwise small; the adjustment is completed, tighten the lock nut 3, when connecting pipe tube should be clean, not a scrap, not a rusty metal and other debris. 4, can not be installed in a place where water splashes. 5, the cabinet at the factory test qualified, on-site installation should be well fastened at each connection joints to avoid leakage occur.