发明名称 |
SEALING DEVICE FOR ROTARY FLUID MACHINE, AND ROTARY FLUID MACHINE |
摘要 |
The invention provides a sealing device for a rotary fluid machine and a rotary fluid machine that reduce a decrease in efficiency and suppress swirling stall in a multistage rotary fluid machine. The sealing device includes a housing that rotatably accommodates a rotary shaft; a plurality of guide parts that extend along at least one of a radial direction and an axial direction of the rotary shaft and that impart flow velocity components in the rotation direction of the rotary shaft to fluid passing through therebetween; a partition part that connects ends of the plurality of guide parts and that serves as a partition between spaces between the plurality of guide parts and an outside space; a first seal part that is an annular protrusion extending in the radial direction, that forms a first gap with respect to the rotary shaft or the housing, and that blocks fluid flowing toward the plurality of guide parts; and a second seal part that is an annular protrusion, that forms a second gap with respect to the rotary shaft or the partition part, and that blocks fluid flowing through the outside space.
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申请公布号 |
US2010028148(A1) |
申请公布日期 |
2010.02.04 |
申请号 |
US20070528509 |
申请日期 |
2007.06.06 |
申请人 |
NAKANIWA AKIHIRO;MASUTANI JO |
发明人 |
NAKANIWA AKIHIRO;MASUTANI JO |
分类号 |
F04D29/10;F04D17/12;F04D25/16;F04D29/66 |
主分类号 |
F04D29/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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