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    ROTARY MACHINE
    1.
    发明公开
    ROTARY MACHINE 审中-公开

    公开(公告)号：EP3421812A1

    公开(公告)日：2019-01-02

    申请号：EP16896699.2

    申请日：2016-12-08

    申请人： Mitsubishi Heavy Industries Compressor Corporation

    发明人： YOKO, Kazutoshi ,  YANAGISAWA, Shin ,  YANAGISAWA, Eiichi ,  NAKANIWA, Akihiro ,  HIRATA, Daisuke ,  MATSUEDA, Takanori

    IPC分类号： F04D29/42 ,  F04D17/12 ,  F04D29/58

    摘要： A centrifugal compressor 1 according to the present invention includes, as gas flow paths, diffuser flow paths 54 into which process gas flowing from impellers 4 to outside in a radial direction Dr flows, curved flow paths 55 that respectively communicate with the diffuser flow paths 54 and change a flowing direction of the process gas from a direction toward the outside in the radial direction to a direction toward inside in the radial direction Dr, and return flow paths 56 that respectively communicate with the curved flow paths 55 and cause the process gas flowing through the curved flow paths 55 to flow into the impellers 4. In the present invention, the curved flow path 55 configuring at least one of the gas flow paths is provided between a diaphragm 51 and a flow path forming body 60 that is provided between the diaphragm 51 and the casing 101.

    ROTARY MACHINE
    4.
    发明公开
    ROTARY MACHINE 审中-公开

    公开(公告)号：EP3421808A1

    公开(公告)日：2019-01-02

    申请号：EP17774041.2

    申请日：2017-03-02

    申请人： Mitsubishi Heavy Industries Compressor Corporation

    发明人： YANAGISAWA, Shin ,  NAKANIWA, Akihiro ,  YANAGISAWA, Eiichi ,  YOKO, Kazutoshi ,  HIRATA, Daisuke ,  MATSUEDA, Takanori

    IPC分类号： F04D29/08 ,  F04D17/12 ,  F04D29/42 ,  F04D29/62

    CPC分类号： F04D29/083 ,  F04D17/122 ,  F04D29/4206

    摘要： To provide a rotary machine that makes it possible to prevent leakage of high-pressure gas from division surfaces without providing irregularity on a contact surface of each of an upper flange portion and a lower flange portion. The rotary machine according to the present invention includes: a casing 101; a rotor 2 that includes a rotatable rotary shaft 3 located inside the casing 101, and a plurality of stages of impellers 4 fixed to an outer periphery of the rotary shaft 3; a diaphragm group 5 including diaphragms 51 that are respectively provided in the plurality of stages of the impellers 4; gas flow paths provided respectively corresponding to the impellers 4 and through which process gas to be compressed flows; and a discharge volute 57 connected to the gas flow paths. The discharge volute 57 is provided to expand inward in an axis line direction Da of the casing 101.