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原文：
化工离心泵的安装技巧： 1.化工离心泵的安装技术关键在于确定化工离心泵安装高度(即吸程)。这个高度是指水源水面到化工离心泵叶轮中心线的垂直距离，它与允许吸上真空高度不能混为一谈，化工离心泵产品说明书或铭牌上标示的允许吸上真空高度是指化工离心泵进水口断面上的真空值，而且是在1标准大气压下、水温20摄氏度情况下，进行试验而测定得的。它并没有考虑吸水管道配套以后的水流状况。而化工离心泵安装高度应该是允许吸上真空高度扣除了吸水管道损失扬程以后，所剩下的那部分数值，它要克服实际地形吸水高度。化工离心泵安装高度不能超过计算值，否则，化工离心泵将会抽不上水来。 2.影响计算值的大小是吸水管道的阻力损失扬程，因此，宜采用最短的管路布置，并尽量少装弯头等配件，也可考虑适当配大一些口径的水管，以减管内流速。 3.应当指出，化工离心泵安装地点的高程和水温不同于试验条件时，如当地海拔300米以上或被抽水的水温超过20摄氏度，则计算值要进行修正。即不同海拔高程处的大气压力和高于20摄氏度水温时的饱和蒸汽压力。但是，水温为20摄氏度以下时，饱和蒸汽压力可忽略不计。 4.从管道安装技术上，吸水管道要求有严格的密封性，不能漏气、漏水，否则将会破坏化工离心泵进水口处的真空度，使化工离心泵出水量减少，严重时甚至抽不上水来。因此，要认真地做好管道的接口工作，保证管道连接的施工质量。

" Chemical centrifugal pump installation tips”是由中国离心泵网提供的水泵行业新闻，译文仅供参考。另外，中国离心泵网还提供相关产品搜索：离心泵型号、离心泵价格、离心泵技术、离心泵新闻、离心泵生产商等。

译文：
Chemical centrifugal pump installation tips: 1 chemical centrifugal pump installation key is to determine the chemical centrifugal pump technology installed height (ie suction). This is the water surface to a high degree of chemical centrifugal pump impeller of the vertical centerline distance, with a high degree of suction on the vacuum can not be confused, chemical centrifugal pump nameplate or instructions marked on the product's high degree of suction on the vacuum pump is the inlet cross-section of chemical the vacuum value, but also in a standard atmospheric pressure, water temperature 20 degrees Celsius cases, test and measurement obtained. It does not consider supporting the suction pipe after the flow conditions. The chemical centrifugal pump mounting height should be a high degree of vacuum suction on the suction pipe deducted after the loss of lift, the rest of that part of the value, it is highly absorbent to overcome the actual terrain. Chemical centrifugal pump installation height can not exceed the calculated values​​, otherwise, chemicals will be pumping no water to pump. (2) affect the calculated value of the suction pipe size is the resistance loss of lift, therefore, should adopt the shortest piping layout, and install as little as possible elbow and other accessories can also be appropriately equipped with larger diameter pipe to reduce the flow tube. 3 It should be noted, chemical centrifugal pump installation site elevation and water temperature is different from the test conditions, such as local elevation of 300 meters or pumping the water temperature exceeds 20 degrees Celsius, the calculated values ​​should be amended. That is, different elevation at atmospheric pressure and water temperature above 20 degrees Celsius when the saturated vapor pressure. However, the water temperature is 20 degrees Celsius, the saturated vapor pressure is negligible. 4 from the pipe installation technology, water pipes require strict sealing, can not leak, leaking, or you will destroy chemical centrifugal pump vacuum at the intake, pump out the water to reduce the chemical, even when serious pumping Sheung Shui to. Therefore, to carefully work out the interface pipe work, pipe connections to ensure the construction quality.

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原文来源：http://www.1lixinbeng.com/

2011-12-23 02:49

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