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为获得离心压气机各元件静压分布,苇点开展了跨音速离心压气机级间静压测试研究,研究结果表明:(1)蜗舌未造成导风轮进口静压分布周向不均匀;(2)蜗舌导致了短叶片轮缘静压分布的周向不均匀性;(3)同一转速,跨音速高效工况周向静压分布并不均匀;(4)跨音速时,蜗壳沿流动方向总是减速扩压;(5)相同转速,扩压器静压提升变化很小(约3kPa),而叶轮静压提升变化很大(约13～50 kPa),叶轮静压提升的改变决定着特性线的陡峭程度。
In order to obtain the static pressure distribution of the components of centrifugal compressor, we conducted a static pressure test of transonic centrifugal compressor at interstral pressure. The results show that: (1) (2) the tongue and the tongue lead to the circumferential uneven distribution of the hydrostatic pressure of the short vane rim; (3) the distribution of the circumferential static pressure in the same rotational speed and transonic high efficiency working condition is not uniform; (4) (5) At the same speed, the static pressure increase of the diffuser changes little (about 3 kPa) and the static pressure increase of the impeller varies greatly (about 13-50 kPa). The change of the static pressure of the impeller is decided by the change The steepness of the characteristic line.