Globe valve,
the valve is one of the most widely used one of the reason it is
popular, is due to open and close in the process of friction surface,
more durable, opening, manufacturing easy, convenient maintenance, not
only suitable for low voltage, and is suitable for high pressure.Globe
valve closure principle is, rely on the valve rod pressure, sealing
surface and the valve seat valve sealing surface fit closely, prevent
medium circulation.Valve in China "three for" regulation, the flow of
cut-off valve, shall be applied, so the installation direction.The
structure of the cut-off valve length is greater than the gate valve,
fluid resistance is big, at the same time run for a long time, seal
reliability is not strong.
Globe valve as one of the most important
truncated class valves, play an important role in the field of
aeronautics and astronautics.As important components of aerospace
equipment, cut-off valve to realize the function of medium conveying,
globe, such as, the sealing performance directly affects the safe and
reliable operation of the space equipment.Study the influence factors of
typical cut-off valve sealing characteristics and the influence law,
has guiding significance for the structure design of the valve seal, so
as to improve the sealing performance and reliability of the valve.
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