SINGLE-STAGE RELIEF VALVE WITHPARALLEL VALVE PORTS

摘要

Cavitation is a key problem in relief valve, especially under the condition of high pressure, big flow rate, orhigh water based fluid. In this paper, a special structure, parallel valve ports, is introduced to reduce cavitation.Mathematic model of the valve is established. The results show that three advantages , high control accuracy, smalloperating force and small size, can be obtained by using parallel valve ports, when the two valve ports have the similarfluid characteristics. A design criterion is introduced based on the mathematic model.