濟(jì)南作為山東的重要城市，工業(yè)發(fā)展迅速，其中離心風(fēng)機(jī)是通過將旋轉(zhuǎn)動能轉(zhuǎn)化為流體流動的風(fēng)動力能來輸送流體的裝置。旋轉(zhuǎn)能量通常來自于電動機(jī)或汽輪機(jī)。離心機(jī)在工業(yè)上的應(yīng)用比任何其他類型的風(fēng)機(jī)都要多。

　　As an important city in Shandong, Jinan has developed rapidly in industryCentrifugal pumps are devices that are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The rotational energy typically comes from an electric motor or steam turbine (in case of turbine-driven feedwater pumps). Centrifugal pumps are used in more industrial applications than any other kind of pump. The most common centrifugal pump is the volute pump.

　　離心風(fēng)機(jī)通過葉輪的眼(低壓區(qū))在高速旋轉(zhuǎn)。當(dāng)葉輪和葉片轉(zhuǎn)動時，它們會將動量傳遞給進(jìn)料流體。流體加速地從泵的追逐和真空中向外加速。

　　產(chǎn)生于葉輪的眼睛，不斷地吸引更多的液體進(jìn)入泵。當(dāng)流體的速度增加時動能增加。高動能流體從葉輪區(qū)域強(qiáng)制進(jìn)入蝸殼。在體積中，流體通過一個不斷增加的交叉流動。

　　In the volute of the pump fluid enters the pump axially through the eye of the impeller (low pressure area) which rotates at high speed. As the impeller and blades rotate, they transfer momentum to incoming fluid. The fluid accelerates radially outward from the pump chasing and a vacuum is created at the impellers eye that continuously draws more fluid into the pump. As the fluid’s velocity increases its kinetic energy increases. Fluid of high kinetic energy is forced out of the impeller area and enters the volute. In the volute the fluid flows through a continuously increasing cross-sectional area, where the kinetic energy is converted into fluid pressure (according the Bernoulli’s principle).

　　每臺離心機(jī)由數(shù)百個部件組成。有幾個部件是虛擬離心泵的共同點(diǎn)。這些組分可細(xì)分為濕部和機(jī)械部。泵的濕部包括那些決定泵的水力性能的部件。兩個主要的濕端是葉輪和機(jī)殼。在某些情況下，直接軸承可以水潤滑。機(jī)械端包括在殼體內(nèi)支撐葉輪的部件。泵的機(jī)械端部包括泵軸、密封、軸承和軸套，結(jié)構(gòu)非常嚴(yán)謹(jǐn)。

　　Centrifugal Pump-minEach centrifugal pump is made of hundreds of parts. There are a few components that virtually every centrifugal pump has in common. These components can be subdivided into the wet end and the mechanical end.

　　The wet end of the pump includes those parts that determine the hydraulic performance of pump. The two primary wet ends are the impeller and casing. In some cases the first radial bearing can be water lubricated. In this case also bearing can belongs to wet ends.

　　其實濟(jì)南離心風(fēng)機(jī)的內(nèi)部構(gòu)造非常復(fù)雜，創(chuàng)新將是未來發(fā)展的一大步，相信工業(yè)離心風(fēng)機(jī)還會為我國創(chuàng)造更大的價值。

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