种用于轴承腔滑油密封的流路设计方法

• Format: Patent
• Language: Chinese
• Published: 22.03.2019
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; GAS-TURBINE PLANTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

本发明提供种用于轴承腔滑油密封的流路设计方法，包括如下步骤：根据前轴承腔所处的部位和轴承腔外围结构形式，确定空气封严位置，并区分各位置是动密封还是静密封；确定设计状态；根据步骤所得以及滑油动密封封严压差要求，结合航空发动机总体性能参数、部件气动性能参数，进行空气系统支点封严流路布局；初步确定支点封严流路上所有构件参数，保证用于动密封的空气系统封严腔压力与轴承腔压力之差在设计要求范围内，且静密封的前轴承腔外腔压力也高于轴承腔压力；进行空气系统分析，完善设计，满足各流路在整个空气系统中的其他功能要求。本发明所提供的流路设计方法，同时考虑前轴承腔滑油动密封和静密封，全方位空气封严前轴承腔。 The invention provides a fluid passage design method for bearing cavity lubricating oil sealing. The fluid passage design method comprises the following steps that according to the position of a front bearing cavity and a bearing cavity peripheral structure manner, the air tight sealing position is determined, and either all positions are subject to movable sealing or fixed sealing is distinguished; the design state is determined; according to the condition obtained in the step one and the lubricating oil movable sealing tight sealing differential pressure requirement, in cooperation with aero-engine total performance parameters and component aerodynamic performance parameters, air system tight sealing fluid passage la