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    • 11. 发明授权
    • Fluid metering system
    • 流体计量系统
    • US06296226B1
    • 2001-10-02
    • US09692562
    • 2000-10-19
    • Gregory A. Olsen
    • Gregory A. Olsen
    • F16K3112
    • F17D1/04G05D7/0641
    • A fluid metering apparatus includes a gas inlet, a first regulator in fluid communication with the gas inlet and configured to emit the gas at a first gas pressure, and a second regulator in fluid communication with the gas inlet and configured to emit the gas at a second gas pressure. A first valve is in fluid communication with the first regulator and a second valve is in fluid communication with the second regulator. A switch mechanism has two actuators which, when separately actuated, causes either the first valve to be open and the second valve to be closed or the first valve to be closed and the second valve to be open. The apparatus further includes a fluid pressure regulating device having a fluid inlet port which receives a fluid at a fluid inlet pressure, a gas inlet port and a fluid outlet port. The fluid pressure regulating device delivers the fluid to the fluid outlet port at a device outlet flow rate which is proportional to a predetermined ratio of the fluid inlet pressure and either the first gas pressure if the first actuator is actuated or the second gas pressure if the second actuator is actuated. The apparatus further includes a fluid outlet and an orifice fitting in fluid communication with the fluid outlet port and configured to effect a pressure drop between the fluid outlet port and the fluid outlet.
    • 流体计量装置包括气体入口,与气体入口流体连通并被配置为以第一气体压力发射气体的第一调节器和与气体入口流体连通的第二调节器,并且被配置为在气体入口处发射气体 第二气压。 第一阀与第一调节器流体连通,第二阀与第二调节器流体连通。 开关机构具有两个致动器,当单独致动时,使第一阀门打开并且第二阀门关闭或第一阀门关闭,而第二阀门打开。 该装置还包括具有流体入口端口的流体压力调节装置,该流体入口接收流体入口压力的流体,气体入口和流体出口。 流体压力调节装置以与流体入口压力的预定比例成比例的装置出口流量和如果第一致动器被致动则与第一气体压力成比例的流体到达流体出口端口,或者如果第二气体压力 第二致动器被致动。 该装置还包括流体出口和与流体出口端口流体连通并配置成实现流体出口和流体出口之间的压降的孔口。