Failure analysis and Countermeasures
Adjust the throttle valve hand wheel, no oil pressure compensation valve does not move the pressure compensation valve in the closed position on the card dead
(1) the valve core and the valve sleeve geometric precision is poor, the gap is too small
(2) the spring bending, deformation and make the valve stuck
(3) soft spring (1) check the accuracy, to meet the requirements of mobile flexible gap repair
(2) replace the spring
(3) replace the spring
Dirty oil throttle valve fault, mouth blocked envoys to check the oil, oil filter
Hand wheel and throttle valve assembly position is not suitable for inspection reasons, re assembly
Throttle valve in the heart of the connection keys lost or not loaded key replacement key or fill key
The throttle valve core because the clearance is too small or deformed and stuck cleaning, repair or replacement of parts clearance
Control shaft thread blocked by dirt, caused by poor regulation of disassembly and cleaning
System does not supply the valve valve heart valve does not change the cause and eliminate
The actuator speed instability of a flow instability
Fixed wheel pressure compensation valve fault pressure compensation valve heart valve is not sensitive
(1) the valve core has card dead phenomenon;
(2) the damping orifice of the compensation valve is blocked;
(3) the bending deformation, spring, spring or spring end and vertical axis (1) to repair, mobile and flexible
(2) to clean the damping hole, if the oil is dirty, it should be replaced.
(3) replace the spring
Pressure compensated valve valve in the fully open position on the card dead
(1) compensation valve orifice blocked
(2) the valve core and the valve set of geometric accuracy is poor, with the gap is too small
(3) spring bending, deformation of the valve core stuck (1) to clean the damping hole, if the oil is too dirty to be replaced
(2) repair to achieve mobile flexible
(3) replace the spring
The throttle valve failure at the orifice area caused by dirt, wall through open the cleaning, check the oil, if the oil is not qualified should be replaced
Simply type throttle valve outside the load changes will lead to changes in the flow of external load change, or the implementation of the speed requirements of the system is very stable system, should use the speed control valve
Oil quality deterioration of oil temperature is too high, resulting in through the orifice flow to examine changes in temperature rise, reduce the temperature of the oil, and controlled in the required range
With temperature compensation and speed control valve of the poor sensitivity of the compensation, damage has been selected for the strong temperature sensitivity of the material for the compensation rod, the bad should be replaced
Check valve failure in the flow control valve, one-way valve sealing performance is not good grinding check valve to improve the sealing performance
The air in the pipe vibration system should be discharged into the air.
After the adjustment of the position change of the pipe vibration, the locking device is locked by the locking device.
Leakage and leakage of the flow is not stable, resulting in the implementation of the operating speed of the agency to eliminate the leakage, or replace the new components
