Abstract: This paper deals with the
study of the low noise relief valve Type YF-L20H-Y2(A). It
describes a noise source that old valve has, the means of
decreasing its poise and gives structural principle of this new
type of the valve and its computer aided design. Using the
program that determines frequency behaviors from the
block-diagram directly, the dynamic analyses are carried out on
computer. The experiments and manufacture of new valves are in
progress. In this paper, sound power level, sound pressure
level and other important quality indexes of the new low noise
relief valve are given. Its noise level of the low noise relief
valve comes up to existing international advanced standards
which the same type products have.
Key words:
Low noise Relief valve Structural
figure Stability margin Computer aided design
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