pulsating pump 中文意思是什麼
pulsating pump
解釋
吸水泵-
So the pipe system sends out noise because of resonance. especially the frequency 250hz of pulsating water is in close proximity to natural frequency of pipe, so the 250hz is a dangerous frequency to the pipe system. there is another reason why the noise is reached to 110db ( a ) in pump room that the noise is magnified by the cistern because of the resonance of cistern
特別是激勵頻率為250hz的頻率分量恰好與管道系統的固有頻率相接近，其引起的管道振動對噪聲的貢獻最突出，同時也與水泵房房腔的固有頻率相接近，從而引起房腔共鳴發聲，使噪聲進一步被放大，以至於噪聲最大處高達105db （ a ） 。 -
Finally finding that there are two reasons that cause vibration of pipe and noise. the one is the vibration of pump which transfers to pipe and stimulates the vibration of pipe. the second is the stimulating frequency of pulsating water is coherent with the natural frequency of pipe
最後得出管道的振動主要是由於兩個原因，一是泵的機械振動傳遞給管道，引起管道的振動；二是由於水流的脈動激勵頻率與系統的固有頻率相吻合，引起管道的共振發聲。 -
Then a formula about flow of the gear pump and the coefficient of engagement overlap to find is obtained by area method. through analysis contact ratio and overlap ratio has the effect on the volume oil and the flow pulsating ratio
然後採用面積法求得齒輪泵流量與齒輪嚙合重合系數的關系式，研究了齒輪嚙合重合系數對齒輪泵困油和流量脈動率的影響。
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