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    • 5. 发明授权
    • Gas mass flow metering valve
    • 气体质量流量计量阀
    • US6065492A
    • 2000-05-23
    • US739405
    • 1996-10-29
    • Lorenzo Bergamini
    • Lorenzo Bergamini
    • G01F1/40G01F1/42G01F7/00F16K31/12F16K47/00
    • G01F7/005G01F1/40G01F1/42Y10T137/776Y10T137/7761
    • A gas flow control valve which enables mass flow to be measured using a flow straightener in a valve entry duct, a tube for lengthening the entry duct into the valve, a valve element exit port with suitably radiused edges and a flow stabilizer in the valve exit duct. Upstream and downstream pressure taps are positioned immediately upstream of the flow straightener and downstream of the flow stabilizer respectively. This enables the flow rate to be controlled not by the formulas traditionally used for valve dimensioning, but by formulas derived from more accurate formulas used for calculating mass flow with standard members of a fixed restriction type.
    • 一种气体流量控制阀,其使得能够使用流量矫正器在阀入口管道中测量质量流量,将进入管道延长到阀门中的管道,具有适当圆角边缘的阀元件出口和阀门出口中的流量稳定器 管。 上游和下游压力分接头分别紧靠流动矫直机的上游位置和流动稳定器的下游。 这使得流量不能由传统上用于阀门尺寸的公式控制,而是由用于用固定限制类型的标准构件计算质量流量的更准确公式得出的公式。