Cage-type control valves are widely used in process industries, but cavitation can occur when the valves are used in extreme high-pressure drop and large volume flow rate conditions. In this study, the cage-type control valve with improved valve cages is introduced, and its flow and cavitation characteristics are compared with other cage-type control valves with no dead zones in the regulation process. Two cage numbers and four valve cage structures are studied. Numerical simulations are conducted, and their accuracy is validated using experimental results. Results show that cage-type control valves with valve cage 1 have the maximum flow coefficient and cavitation intensity under the same cage number. Cage-type control valves with valve cage 2 have the minimum flow coefficient but medium cavitation intensity. While cage-type control valves with improved valve cages have a medium flow coefficient but minimum cavitation intensity, and water vapor volume can be reduced by 2–8 times compared with cage-type control valves with the valve cage 2. Furthermore, for cage-type control valves with improved valve cages, the cavitation intensity, and flow coefficient decrease as the cage number and groove height increase.

笼式控制阀广泛用于过程工业，但在极端高压降和大体积流量条件下使用时会发生气蚀。本研究介绍了改进阀笼的笼式控制阀，并与其他调节过程中无死区的笼式控制阀进行了流量和汽蚀特性的比较。研究了两个笼数和四个阀笼结构。进行了数值模拟，并使用实验结果验证了它们的准确性。结果表明，阀笼1的笼型控制阀在相同笼数下具有最大的流量系数和汽蚀强度。带阀笼 2 的笼式控制阀流量系数最小，汽蚀强度中等。