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基本定义 气体通过气阀通道时,通道产生气动阻力。对给定通流截面面积、介质及其参数的气动阻力值,首先决定于通道尺寸关系,还与它们的形状和壁面粗糙度有关。 产生的阻力值可用无因次量来评定。气阀的流量系数α是通过气阀介质的实际流量mц,与通过具有最狭窄部位通流截面面积等于气阀通流面积的理想流管,在参数和介质相同时,绝热流动的理论流量mτ之比。
The basic definition of gas through the valve passage, the passage of aerodynamic resistance. For a given flow cross-sectional area, the media and its parameters aerodynamic drag value, first depends on the channel size, but also with their shape and wall roughness related. The resulting resistance value can be assessed in a dimensionless manner. The flow coefficient α of the gas valve is the actual flow rate through the valve medium mц and the ideal flow pipe through the flow passage area with the narrowest part is equal to the flow area of the valve. When the parameters and the medium are the same, the adiabatic flow rate mτ Ratio.