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    • 45. 发明授权
    • Blowdown valve
    • 排污阀
    • US06675832B1
    • 2004-01-13
    • US10431475
    • 2003-05-07
    • Duc Thanh TranStanley F. MillerStephen G. Freitas
    • Duc Thanh TranStanley F. MillerStephen G. Freitas
    • F16K4704
    • F22B37/545F16K5/0605F16K27/067F16K47/045Y10T137/86751Y10T137/87917
    • Disclosed is a blowdown valve for a boiler system for removing fluid that contains debris. The blowdown valve comprises a housing for a shutoff valve and a reversible throttle valve. The shutoff valve is fluidly connected to a fluid inlet that, in turn, is connected to the boiler system. Each one of the shutoff and throttle valves includes a rotatable valve ball having a bore formed therethrough. Rotation of the valve ball alternately blocks and unblocks fluid flowing therethrough. The throttle valve bore includes first and second bore ends. A bore insert is disposed within the bore between first and second debris zones. The bore insert includes passages configured for reducing fluid energy. The first and second debris zones entrap debris therewithin. The throttle valve reverses positions of the first and second debris zones such that entrapped debris may be flushed out of the fluid outlet.
    • 公开了一种用于去除含有碎屑的流体的锅炉系统的排污阀。 排污阀包括用于截止阀和可逆节流阀的壳体。 截止阀流体地连接到流体入口,流体入口又连接到锅炉系统。 关闭和节流阀中的每一个包括具有穿过其中形成的孔的可旋转阀球。 阀球的旋转交替地阻挡和解除流过其中的流体。 节流阀孔包括第一和第二孔端部。 钻孔插入件设置在孔内的第一和第二碎屑区之间。 钻孔插入件包括经配置以减少流体能量的通道。 第一和第二个碎片带在其中夹带碎屑。 节流阀反转第一和第二碎屑区的位置,使得夹带的碎屑可以从流体出口冲出。