大通径止回阀的选材和结构设计

摘要

止回阀是一种自动阻止介质逆流的阀门，其结构简单，能自动启闭，因而广泛应用于各个领域。对大通径旋启式止回阀的选材和结构设计进行了研究。%Check valve is a kind of valve that can automatically prevent counter current of medium. Because of simple structure and automatic opening and closing, it is widely used in various fields. In this paper it mainly studies the material selection and structure design of large diameter swing check valves.