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调节阀最佳口径的选择是调节阀选择中的重要内容之一。调节阀能否正常地运转以及调节阀性能的好坏都与调节阀口径选择得是否正确有着密切的关系。一、调节阀计算压差的选择调节阀对流体流量进行调节时,必然会产生一定的压力损失,也就是说调节阀前后应有一定的压差。压差的选择关系到调节阀口径计算的正确性、调节性能的好坏和设备动力的经济性,因此是调节阀计算中最关键的问题之一。从全装置的经济投资及节约能源出发,希望调节阀上的压力损失尽可能地小,这样可以选择小扬程的泵以节约动力。但从工作特性分析知道,调节阀在系统中必须占有一定的压差才有较好的调节
The choice of the best caliber regulator valve is an important part of the selection. Regulating valve can operate normally and the performance of the regulating valve is good or bad with the selection of the caliber of the valve is correct is closely related. First, the control valve to determine the choice of pressure control valve to regulate fluid flow, it will inevitably produce some pressure loss, that is, before and after the control valve should have a certain pressure. The choice of pressure differential relates to the correctness of the caliber of the control valve, adjust the performance of the equipment and the economy of the power, it is one of the most critical issues in the control valve calculation. Starting from the economic investment and energy saving of the whole plant, we hope the pressure loss on the regulating valve will be as small as possible, so that the pump with smaller head can be selected to save power. However, from the analysis of working characteristics know that the control valve in the system must have a certain pressure to have a better regulation