由于制造中的机组对于(例如蒸汽发生器)愈来愈大,人们对机组运行时辅机的电力消耗也就愈来愈注意。其中蒸汽发生器的风机用电特别受到重视。为了降低风机的电力消耗,对风道压降必须进行测试,并用多种方法使风道弯头成为最佳结构来减少压降。目前对压降的计算已经进行了很多工作。通过安装各种各样的导向件,已有可能改善风道弯头中的流动条件。不过这些工作大部分是很专门的试验,设计人员很难在较短时间内使用这些试验的结果。以试验作为基础,从而规定工作的基本条件和制订标准,这是确定风道弯头结构时应该考虑的。 Due to the growing number of units in manufacture (eg, steam generators), there is increasing emphasis on the power consumption of auxiliary engines during the operation of the unit. One of the steam generator fan power with special attention. In order to reduce the power consumption of the fan, the pressure drop of the air duct must be tested, and the duct elbow should be optimized to reduce the pressure drop in various ways. At present, a lot of work has been done on the calculation of pressure drop. By installing a wide variety of guides, it has been possible to improve the flow conditions in duct elbows. However, most of these tasks are very specialized tests, designers are difficult to use the results of these tests in a short period of time. Based on the test, the basic conditions of work and the setting of standards are defined, which should be taken into account when determining the structure of the elbow.