膜片式流量调节阀

介绍了用于油田开采工艺的膜片式流量调节阀的结构及其特点,分析了调节阀出口压力、进口压力对其流量的影响。受力分析和现场使用表明:该阀流量恒定精度(即恒流偏差)取决于膜片有效面积S与阀心下端有效面积S′之比,此值为12,其恒流比偏差为0·03,说明该阀的流量恒定精度高;该阀不易被杂质卡死,稀油中直径1mm的砂粒能顺利通过,而不影响阀的功能;膜片式流量调节阀是没有高加工精度要求的部件,普通车床即可生产,因此造价较低。

Diaphragm flow regulating valve

The structure and its characteristics of a diaphragm flow regulating valve used in oil production are introduced. Theeffects of inlet pressure and outlet pressure on its flow rate are analyzed. Analysis on applied pressure and field application indicate that its constant flow precision (deviation of constant flow) depends oh the ratio between effective area 5 of the diagram and effective area S' at the lower end of valve core, the value is 12, the deviation of constant flow ratio is 0.03, it indicates that the constant flow precision is high, not easy to be stuck by dirt, the particles with more than 1 mm diameter can go through it smoothly without influence on the valve function. For the diaphragm valve, there is not any part needing high machining precision, machining can be implemented on general machining tools, therefore it is produced for low cost.