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当使用一个调节阀不能满足过程控制的要求时,常常利用分程阀门定位器将调节器的输出信号范围分成若干小段以控制两个或两个以上的调节阀,使其在一段信号范围内起作用,这种控制就叫作分程控制。分程控制和其他控制的区别就在于分程调节阀。分程控制调节阀在低流量和高压差的最坏情况下,首先必须控制过程的最小流量;在高流量和低压差的最坏情况下,也必须充分控制过程的最大流量。为了获得良好的控制效果,分程调节阀在分程点的流量特
When using a control valve can not meet the requirements of process control, it is often used to split the output signal range of the regulator into several small sections to control two or more control valves so that they are within a range of signals Role, this control is called the split control. Split control and other control difference lies in the split valve. Split Control Regulators In the worst case of low flow and high pressure differential, the minimum flow of the process must first be controlled; in the worst case of high flow and low pressure drop the maximum flow of the process must also be fully controlled. In order to obtain a good control effect, the splitter valve flow at the point of special points