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公开(公告)号:US5458457A
公开(公告)日:1995-10-17
申请号:US108618
申请日:1993-08-26
申请人: Akira Goto , Tatsuyoshi Katsumata , Masanori Aoki
发明人: Akira Goto , Tatsuyoshi Katsumata , Masanori Aoki
CPC分类号: F04D29/661 , F04D27/02 , F04D29/669 , F04D29/681
摘要: In a turbomachine having an impeller rotating in a casing, nozzles are provided for forming an annular layer of fluid flowing along the inner surface of the casing. The annular flow layer is formed continuously or intermittently under control by detecting the occurrence of unstable characteristics of the turbomachine or a precursor of unstable characteristics, created by conditions represented by a positively-sloped region of the head-capacity curve of the turbomachine.
摘要翻译: PCT No.PCT / JP92 / 01280 Sec。 371日期:1993年8月26日 102(e)日期1993年8月26日PCT提交1992年10月2日PCT公布。 出版物WO93 / 07392 日期为1993年4月15日。在具有在壳体中旋转的叶轮的涡轮机中,设置有用于形成沿着壳体的内表面流动的环形流体流的喷嘴。 通过检测涡轮机的不稳定特性的发生或不稳定特性的前体的产生,形成环状流动层,由涡轮机的头部容量曲线的正倾斜区域表示的条件产生。
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公开(公告)号:US5707206A
公开(公告)日:1998-01-13
申请号:US683069
申请日:1996-07-16
申请人: Akira Goto , Tatsuyoshi Katsumata
发明人: Akira Goto , Tatsuyoshi Katsumata
CPC分类号: F04D29/688 , F01D11/10 , F04D29/4213 , F04D29/526 , F04D29/684 , F04D29/685 , Y10S415/914
摘要: A turbomachine having an impeller rotating within a casing of the machine and groove passages are formed in a wall of the casing between an upstream portion and a downstream portion of the impeller and high pressure fluid is injected into the groove passages for increasing the stall margin without lowering the peak efficiency of the machine and prevents generation of a positive slope in a head-capacity curve.
摘要翻译: 具有在机器壳体内旋转的叶轮和槽通道的涡轮机在叶轮的上游部分和下游部分之间形成在壳体的壁中,并且高压流体被注入槽通道中以增加失速余量而没有 降低机器的峰值效率并防止在头容量曲线中产生正斜率。
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