There are two main reasons for this failure: On the on […]
There are two main reasons for this failure: On the one hand, the amount of leak in the piston chamber of the main bearing seal is large. Although the bearing seal is seated back, The pressure is still high, pushing the piston downward force is still large, resulting in the main bearing seal back slowly. The way to eliminate this kind of failure is mainly solved by opening the large throttle opening and increasing the throttle aperture. The large opening of the throttle valve and the increase of the throttle aperture allow the steam remaining in the pulse tube to be drained rapidly , Thus reducing the pressure inside the piston so that the thrust acting on the piston to move downward rapidly decreases, the thrust of the steam medium in the steam collection header upward and the pull-up force of the spring of the main bearing seal itself upwards rapidly Back to the seat.
• On the other hand, the friction between the moving parts of the main bearing seal and the fixed parts is too large, which can cause the main bearing seal to recoil slowly. The solution to this problem is to fix the moving parts of the main bearing seal Part of the gap with the console standard range.