公开(公告)号：US07410341B2

公开(公告)日：2008-08-12

申请号：US11159453

申请日：2005-06-22

申请人： Richard R. Gockel ,  John D. Robinson

发明人： Richard R. Gockel ,  John D. Robinson

IPC分类号： F03B11/00

CPC分类号： F01D25/125 ,  F05D2240/55 ,  F05D2300/224 ,  Y02T50/675

摘要： The invention relates to a system of shaft sealing for a turbine engine. Carbon-ring seals placed on pressurized bearing compartments are adapted to operate on ceramic runners which are cooled by lubricating fluid. The runners are closed at one end so that fluid does not enter an interface between the runner and the seal. The seal is held in place in a cylindrical seal housing with an inwardly projecting seal retention wall.An internally cooled seal housing is provided having an enclosed annular cooling groove is formed in the wall. Fluid is circulated through the groove to provide cooling of the seal housing and the carbon-ring seal. The circulated fluid is provided from the same source as fluid that is circulated to lubricate bearings on the engine. However, a separately controlled fluid delivery system is employed so that a rate of flow of fluid to the seal housing can be specifically controlled. Cooling effects of circulated fluid are made available to the seal housing even though there is no fluid directed at a shaft-seal interface. Undesirable churning and fluid loss also may be reduced.

摘要翻译： 本发明涉及一种用于涡轮发动机的轴封的系统。 放置在加压轴承隔间上的碳环密封件适用于由润滑流体冷却的陶瓷流道。 流道在一端封闭，使得流体不会进入流道和密封件之间的界面。 密封件被保持在具有向内突出的密封保持壁的圆柱形密封壳体中的适当位置。 提供内部冷却的密封壳体，其在壁中形成有封闭的环形冷却槽。 流体通过凹槽循环，以提供密封壳体和碳环密封件的冷却。 循环流体与作为循环润滑发动机轴承的流体相同的来源提供。 然而，采用单独控制的流体输送系统，以便可以特别地控制流体到密封壳体的流动速率。 循环流体的冷却效果可用于密封壳体，即使没有流体指向轴封界面。 也可能减少不希望的搅拌和流体损失。