发明申请
- 专利标题: LABYRINTH SEAL
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申请号: US16304329申请日: 2017-05-26
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公开(公告)号: US20190136863A1公开(公告)日: 2019-05-09
- 发明人: Shunsuke MORINAKA
- 申请人: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
- 申请人地址: JP Hyogo
- 专利权人: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
- 当前专利权人: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
- 当前专利权人地址: JP Hyogo
- 优先权: JP2016-109199 20160531
- 国际申请: PCT/JP2017/019810 WO 20170526
- 主分类号: F04D29/10
- IPC分类号: F04D29/10
摘要:
A labyrinth seal includes a step portion formed on an outer circumferential portion of a rotary body, a fin extending radially inward from an inner circumferential portion of a stationary body, and an annular groove formed in the outer circumferential portion of the rotary body. The step portion includes a diameter-increasing step portion and a diameter-decreasing step portion. The fin includes a first fin, a second fin, and a third fin. The annular groove is disposed in at least a part of a region that is located close to the low-pressure side compared to the high-pressure-side step portion and close to the high-pressure side compared to the third fin.
公开/授权文献
- US11060615B2 Labyrinth seal 公开/授权日:2021-07-13