在现代化工厂的自动控制中,调节阀起着十分重要的作用,因为流动介质的正确分配和控制将决定生产的正常进行。这些控制无论是能量的交换、压力的降低或者是简单的容器加料,都需要调节阀等这些最终控制元件去完成。在调节器的低能量级和执行流动流体控制所需的高能量级功能之间,最终控制元件完成了必要的功率放大作用。在许多系统中,调节阀需要经历的工况如温度、压力、腐蚀和污染都要比其他部件更为恶劣。为了保证生产的顺利进行,就需要调节 Control valves play a very important role in the automation of modern plants because the proper distribution and control of the flow medium will determine the normal operation of the plant. These controls, whether they are energy exchange, pressure reduction or simple vessel loading, all require final control elements such as regulating valves to complete. The final control element performs the necessary power amplification between the low energy level of the regulator and the high energy level function required to perform the control of the flowing fluid. In many systems, regulating valves need to experience conditions such as temperature, pressure, corrosion and contamination worse than other components. In order to ensure the smooth progress of production, we need to adjust