客戶使用離心風機選型一般方法步驟？怎麼選擇

1. 在選擇離心風機前，應瞭解國內離心風機的生產和產品質量情況，如生產的離心風機品種、規格和各種產品的特殊用途，新產品的發展和推廣情況等，還應充分考慮环保的要求，以便擇優選用風機。1. before selecting the centrifugal fan, we should understand the production and product quality of the domestic centrifugal fan, such as the variety, specification and special use of various products, the development and popularization of new products, and the requirements of environmental protection should be taken into consideration so as to choose the fan.
2. 根據離心風機輸送氣體的物理、化學性質的不同，選擇不同用途的離心風機。如輸送有爆炸和易燃氣體的應選防爆離心風機；排塵或輸送煤粉的應選擇排塵或煤粉離心風機；輸送有腐蝕性氣體的應選擇防腐離心風機；在高溫場合下工作或輸送高溫氣體的應選擇高溫離心風機等。2. according to the different physical and chemical properties of centrifugal fans, choose different types of centrifugal fans. For example, a centrifugal fan should be selected for explosion and flammable gas; dust or pulverized coal should be selected for dust or pulverized coal centrifugal fan; corrosion resistant centrifugal fan should be selected for transporting corrosive gases; high temperature centrifugal fan should be selected for working or transporting high temperature gas at high temperature.
3. 在離心風機選擇性能圖表上查得有二種以上的離心風機可供選擇時，應優先選擇效率較高、機號較小：調節范圍較大的一種，當然還應加以比較，權衡利弊而決定。3. when there are more than two centrifugal fans on the centrifugal fan selection performance chart, more than two kinds of centrifugal fans can be selected for selection, it should be preferred to choose higher efficiency and smaller number of machines: a larger adjustment range, which should be compared and weigh the advantages and disadvantages.
4. 如果選定的風機葉輪直徑較原有風機的葉輪直徑偏大很多時，為瞭利用原有電動機軸印花地坪、軸承及支座等，必須對電動機啟動時間、風機原有部件的強度及軸的臨界轉速等進行核算。4. if the diameter of the selected fan impeller is much larger than the diameter of the original fan, in order to make use of the original motor shaft, bearing and support, the starting time of the motor, the strength of the or环氧地坪iginal parts of the fan and the critical speed of the shaft must be calculated.
5. 選擇離心式離心風機時，當其配用的電機功率小於或等於75KW時，可不裝設僅為啟動用的閥門。當排送高溫煙氣或空氣而選擇離心鍋爐引風機時，應設啟動用的閥門，以防冷態運轉時造成過載。5. when a centrifugal fan is selected, when the motor power is less than or equal to 75KW, no valve can be installed for start-up. When the high temperature flue gas or air is discharged and the centrifugal boiler induced draft fan is selected, a starting valve should be set up to prevent overload during cold running.
6. 對有消聲要求的通風系統，應首先選擇效率高、葉輪圓周速度低的離心風機，且使其在最高效率點工作；還應根據通風系統產生的噪聲和振動的傳播方式，采取相應的消聲和減振措施。離心風機和電動機的減振措施，一般可采用減振基礎，如彈簧減振器或橡膠減振器等。6. for the ventilation system with the requirement of noise elimination, the centrifugal fan with high efficiency and low circumferential velocity of the impeller should be selected first, and it works at the highest efficiency point, and the corresponding noise reduction and vibration damping measures should be taken according to the transmission mode of noise and vibration produced by the ventilation system. Vibration damping measures such as spring damper or rubber shock absorber are generally adopted for centrifugal fans and motors.
7. 在選擇離心風機時，應盡量避免采用離心風機並聯或串聯工作。當不可避免時，應選擇同型號、同性能的離心風機聯合工作。當采用串聯時，第一級離心風機到第二級離心風機之間應有一定的管路聯結。7. when selecting a centrifugal fan, it is important to avoid using centrifugal fans in parallel or in series. When it is unavoidable, we should choose the same type and homosexual centrifugal fans to work together. When connected in series, the first stage centrifugal fan should have certain pipe connection between the second centrifugal fans.
8. 所選用的新風機應考慮充分利用原有設備、適合現場制作安裝及安全運行等問題。
8. the new fans should be considered to make full use of existing equipment, suitable for on-site production, installation and safe operation.
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