閥門噪聲 的英文怎麼說
中文拼音 [fáménzàoshēng]
閥門噪聲
英文
valve noise-
And concerning boundary conditions along piping system are properly set. futhermore, vertex sound is discussed in this paper. effect of the noise reduction about the mufflers is analysed, and a lot of trials is used to testify exist of valve noise and influence to pipe system. there kinds of mufflers are proved that they can reduce the fluid niose of pipe system by a large number of experimentation
對噪聲的抑制裝置? ?消聲器的降噪效果進行了分析，並結合實際工作建立了模擬海水管路試驗臺架，通過一系列試驗，說明閥門噪聲的存在，及其對管路流噪聲的影響，證明設計的三種結構消聲器對管路流噪聲的良好消減效果。Therefore, this paper studies three kindsvalves such like bufferfly valve, brake valve and ball valve, with the numerical simulation method by cfx which is often used to simulate the fluid. by the simulation of three kinds of valves, we can kown dynamic characteristic of them. in this paper, i not only simulate for three kinds of valves, but also analyse cause of flow - noise and give respectively mathematical model of main noise sources in piping system such as pupm and valve
本文通過cfx軟體，用數值模擬的方法，對海水管路系統中常見的三種閥門（蝶閥、閘閥、球閥）流動特性及噪聲進行了模擬分析，闡明閥門噪聲產生的機理，建立了泵和閥門等噪聲源的數學模型，並對管路系統中涉及到的邊界條件做了適當的處理，分析了閥門下游的渦聲。Among them the flow pulse is more standing - out, which is the main reason of its not more widely used. because high flow pulse will lead to the worse of the smooth movement of hydraulic motor and pipe, also cause pressure pulse which lead to a high noise, and give the destructive damage to the axial, bearing, valve, the connect of pipe etc. how to make the flow pulse low has become the research of scholars of many country
其中流量脈動問題顯得尤其突出，它嚴重製約著齒輪泵的應用，因為泵的流量脈動大，不僅會使液壓缸運動的平穩性、液壓馬達回轉的均勻性性變差，而且會引起壓力脈動，進而使管道、閥門乃至整個系統振動（特別是在共振時） ，並發出很強的噪聲，這對軸、軸承、管接頭及密封都有破壞性影響。Acoustics. determination of sound power levels of noise from air - terminal devices, air - terminal units, dampers and valves by measurement in ? reverberation room
聲學.混響室空調終端設備空調終端部件氣流調節器和閥門的噪音聲功率級測定Acoustics. laboratory tests on noise emission from appliances and equipment used in water supply installations. part 2 : mounting and operating conditions for draw - off taps and mixing valves
聲學.供水設施使用的器械和設備發出噪音的試驗室試驗.第2部分:排水龍頭和混合閥門的安裝和操作條件Measurement of noise emitted by machines ; airborne noise measurement, enveloping surface method ; valves
機器空氣噪聲的測量.空氣噪聲測量.包絡面法.閥門Acoustics - laboratory tests on noise emission from appliances and equipment used in water supply installations - mounting and operating conditions for in - line valves and appliances
聲學.供水設施中使用的設備和裝置發出噪音的實驗室試驗.管路閥門和裝置的安裝和工作條作The easy - e @ and design e valtves are rugged, single - port globe, angle, and reverse - acting { push - down - to - open } valves designed for many veried applications
閥門包括一系列的高性能單座直通閥，廣泛應用於普通工況，以及耐侵蝕、防氣蝕和降噪聲的場合。分享友人