primary throttle valve 中文意思是什麼

primary throttle valve 解釋
主節流閥
  • primary : adj 1 第一的,最初的,初級的;初等的;基本的;基層的。2 主要的,為首的,第一位的。3 原始的,根本...
  • throttle : n 1 〈方言〉喉嚨,氣管。2 【機械工程】風門,節氣閥,節流閥〈又叫 throttle valve〉;風門桿,節流桿...
  • valve : n 1 【機械工程】閥,活門,舌門;汽門。2 【解剖學;動物學】瓣,瓣膜;(貝)殼瓣;【植物;植物學】...
  1. The simulation shows that the valve throttle area should be little as possible but must be more than 40 % of pipe section area ; when the total length of pipe is same, and the flow quantity is enough, pipe before primary valve should be thin and long, and the pipe after primary valve should be thick and short, the upriver and downriver small pressure fluctuation will badly lead to waterdrammer pressure rising, and spending more time in establishing pressure and flow quantity

    模擬表明,閥門過流面積在滿足大於管道截面積40 %的條件下應盡可能小;在管道總長一定並滿足流量要求的條件下,主閥前應採取長而細的管道,閥后則應採用短而粗的管道;上下游微小的壓力波動都會嚴重增大開關閥門引起的水擊,並使壓力、流量的建立需要更長的時間。
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