公开(公告)号：US3823950A

公开(公告)日：1974-07-16

申请号：US29985272

申请日：1972-10-24

申请人： LAVAL TURBINE

发明人： PEDERSEN H

IPC分类号： F01D11/02 ,  F16J15/44 ,  F16J15/40

CPC分类号： F01D11/025 ,  F16J15/445

摘要： An improved, pressure vented, wear ring assembly is herein described for use in rotary machinery having a substantial axial pressure gradient. A rotor shaft contacting element, in the form of a plastic wear ring, is mounted in a holding member to extend generally co-axially about the axis of rotation of the rotor member. The holding member substantially encloses all but the rotor engaging portion of the wear ring and is formed with pressure relieving apertures, or exhaust ports, to release high pressure fluid, trapped between opposing surfaces of the wear ring and the holder, to a low pressure region. An intermediate ring or liner is interposed between the wear ring and the holder member, which intermediate ring comprises a porous, nonextrudable member having a relatively high compressive strength. The porous member is operable to direct the trapped high pressure fluid axially, radially and circumferentially of the wear ring, to the exhaust ports formed in the holder, while maintaining the wear ring in a properly aligned, operational posture.

摘要翻译： 这里描述了一种改进的，压力通风的耐磨环组件，用于具有大的轴向压力梯度的旋转机械中。 以塑料耐磨环的形式的转子轴接触元件安装在保持构件中以围绕转子构件的旋转轴线大致共轴地延伸。 保持构件基本上包围除了耐磨环的转子接合部分之外的所有部分，并且形成有减压孔或排气口，以释放被困在耐磨环和保持器的相对表面之间的高压流体到低压区域 。 中间环或衬套介于耐磨环和保持器构件之间，该中间环包括具有相对较高压缩强度的多孔不可挤压构件。 多孔构件可操作以将被困的高压流体轴向，径向地和周向地引导到形成在保持器中的排气口，同时将磨损环保持在适当对准的操作姿势。