The utility model has the advantages of a simple structure, the stable working and the realizing of the low pressuremaintaining.
本实用新型的优点是结构简单、工作稳定、能实现低保压。
2
Can realize the constant pressure, the two kinds of forming process, can be equipped with pressuremaintaining time delay function, adjustable delay time.
可实现定压、定程两种成型工艺，可选配保压延时功能，延时时间可调。
3
The water filling and pressuremaintaining system mainly included: pressure pump and its control device, blockage end at the spiral case inlet, sealing ring on the stay ring of turbine, etc.