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Centrifugal compressor having an asymmetric self-recirculating casing treatment

机译:具有非对称自循环壳体处理的离心压缩机

摘要

A centrifugal compressor includes an asymmetric self-recirculating casing treatment that includes, on an inner face of a casing 10, a suction ring groove 1, a ring guide channel 2 and a back-flow ring groove 3 to form a self-recirculating channel. An axial distance Sr from an upstream end face of the suction ring groove 1 to an impeller full blade leading edge 4 or a width br of the suction ring groove 1 is represented as A·sin(α+θ0)+A0 and is distributed in a sinusoidal shape in a circumferential direction, an initial phase angle θ0 is in a range of 0°≤θ0≤360°, and a circumferential angle α of the casing 10 has a definition range of θ0≤α≤θ0+360°. In the expression, A denotes amplitude of distribution of the axial distance Sr or the width br, and A0 denotes an average of the axial distance Sr or the width br.
机译:一种离心式压缩机,包括不对称的自循环壳体处理,该处理在壳体 10 的内表面上包括吸入环槽 1 ,环形引导通道 2 和回流环槽 3 形成自循环通道。从吸力环槽 1 的上游端面到叶轮全叶片前缘 4 的轴向距离S r 或宽度b <吸环槽 1 的Sub> r 表示为A·sin(α+θ 0 )+ A 0 在周向上呈正弦形分布,初始相位角θ 0 在0°≤θ 0 ≤360°的范围内,周角α 10 的定义范围为θ 0 ≤α≤θ 0 + 360°。在表达式中,A表示轴向距离S r 或宽度b r 的分布幅度,而A 0 表示轴向距离的平均值。轴向距离S r 或宽度b r

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