公开(公告)号：US20140271141A1

公开(公告)日：2014-09-18

申请号：US13829895

申请日：2013-03-14

申请人： IMO Industries, Inc.

发明人： Daniel R. Landry

IPC分类号： F04D29/10

CPC分类号： F01C21/02 ,  F04B53/006 ,  F04B53/16 ,  F04B53/164 ,  F04C2/16 ,  F04C15/0038 ,  F04C2240/605

摘要： A sealing arrangement is disclosed for a rotating shaft. A mechanical seal and a throttle bushing are mounted in a pump casing having a process fluid chamber and an end region. A shaft is rotatably mounted in the pump casing. The seal has a stationary portion mounted to the pump casing, and a rotatable portion mounted to the shaft. A throttle bushing surrounds the shaft and is connected to the casing. The throttle bushing has an inner surface that provides a fluid passageway between the inner surface of the throttle bushing and the shaft. The throttle bushing is spaced along the shaft at an axial distance from the mechanical seal, thus forming a barrier fluid space. The mechanical seal separates the barrier fluid space from the process fluid chamber. Barrier fluid migrates past the throttle busing inner surface, lubricates the pump bearings and gears, and is collected for reuse.

摘要翻译： 公开了一种用于旋转轴的密封装置。 机械密封件和节流阀衬套安装在具有工艺流体室和端部区域的泵壳体中。 轴可旋转地安装在泵壳体中。 密封件具有安装到泵壳体的固定部分和安装到轴的可旋转部分。 节气门套筒围绕轴并连接到壳体。 节气门衬套具有内表面，该内表面在节流衬套的内表面和轴之间提供流体通道。 节气门衬套沿着轴与机械密封件轴向间隔开，从而形成阻挡流体空间。 机械密封将阻隔流体空间与过程流体室分开。 阻隔流体经过油门内表面移动，润滑泵轴承和齿轮，并被收集以重新使用。