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自主式机械面密封的标准化——密封件主要技术数据的计算
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作者 ТитовГ.С. КиселевВ.П. +1 位作者 ЛюбатуровА.М 王喜力 《航空标准化与质量》 1997年第2期37-41,共5页
本文论及的自主式机械面密封件已在НИИСУ(俄罗斯航空标准化统一化研究所 )进行了设计和试验 ,并指定用于航空技术产品。在已往所开展工作的基础上 ,系列标准ОСТ1 1 3792 -80~ОСТ1 1 380 1 -80开始在航空行业内实施。这些标... 本文论及的自主式机械面密封件已在НИИСУ(俄罗斯航空标准化统一化研究所 )进行了设计和试验 ,并指定用于航空技术产品。在已往所开展工作的基础上 ,系列标准ОСТ1 1 3792 -80~ОСТ1 1 380 1 -80开始在航空行业内实施。这些标准包含了机械面密封结构及其零组件的典型结构和尺寸。本文还给出了机械面密封结构的计算方法 ,示出了压力和作用力型谱 ,因而人们可以了解作用在上述密封结构的零组件 ,如碳圈、波形弹簧、橡胶圈上的力。本文给出的数学公式可用于计算波形弹簧的主要特性、确定橡胶圈和滑动表面之间的摩擦力、确定接触部分的作用力、确定参数PcV、计算碳圈的强度及其由工作液压力引起的变形。本文给出了安装在直径为 2 5、35和 展开更多
关键词 密封 机械面密封 波形弹簧 主要技术数据 摩擦副 标准化 自主式 碳圈 机械密封 工作液
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自主式机械面密封试验的某些结果
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作者 КиселевВ.П. ТитовГ.С 王喜力 《航空标准化与质量》 1997年第2期42-48,共7页
本文研究了在НИИСУ(俄罗斯航空标准化统一化研究所 )获得的某些技术成果。这些成果使得采用寿命更长、泄漏更小的机械面密封来取代橡胶圈密封具有可能性。探讨了摩擦副材料对工作液泄漏的影响 ,以及摩擦副在各种使用情况下的磨损状... 本文研究了在НИИСУ(俄罗斯航空标准化统一化研究所 )获得的某些技术成果。这些成果使得采用寿命更长、泄漏更小的机械面密封来取代橡胶圈密封具有可能性。探讨了摩擦副材料对工作液泄漏的影响 ,以及摩擦副在各种使用情况下的磨损状况 ,并给出了机械面密封的试验设备示意图 ;详细研究了机械面密封的泄漏及温度和压力对工作液泄漏量的影响。研究表明 ,随着工作液温度的升高 ,泄漏量增大 ;还研究了摩擦副。 展开更多
关键词 机械密封 机械面密封 密封 泄漏量 工作液压力 摩擦副 自主式 试验器 波形弹簧 燃气涡轮发动机
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The effect of surface roughness on thermal-elasto-hydrodynamic model of contact mechanical seals 被引量:13
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作者 WEN QingFeng LIU Ying +2 位作者 HUANG WeiFeng SUO ShuangFu WANG YuMing 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2013年第10期1920-1929,共10页
In this paper, the effect of surface roughness on sealing clearance, pressure distribution, friction torque and leakage is studied by the thermal-elasto-hydrodynamic mixed lubrication model. A convergent nominal clear... In this paper, the effect of surface roughness on sealing clearance, pressure distribution, friction torque and leakage is studied by the thermal-elasto-hydrodynamic mixed lubrication model. A convergent nominal clearance is formed by the pressure de- formation and thermal deformation of the seal faces. This causes more serious wear in the inner side than that of the outer side of the contact area. Mass leakage increases with the growing of the surface roughness. The temperature and thermal defor- mation on the seal surface increases substantially if the roughness is reduced. The contact mechanical seals have consistent performance when the standard deviation of surface roughness is approximately 0.2 pm. In order to validate the theoretical analysis model, a method combining the measurement of three-dimensioned profile and Raman spectrum is proposed. 展开更多
关键词 contact mechanical seals mixed lubrication thermal-elasto-hydrodynamic model surface roughness
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Dimensional Analysis on Resistance Characteristics of Labyrinth Seals 被引量:4
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作者 HU Dongxu JIA Li YANG Lixin 《Journal of Thermal Science》 SCIE EI CAS CSCD 2014年第6期516-522,共7页
Experimental investigation of stepped and straight-through labyrinth seals was designed to study the sealing performance of two different typical labyrinth seals.In order to facilitate dimensional analysis on the flow... Experimental investigation of stepped and straight-through labyrinth seals was designed to study the sealing performance of two different typical labyrinth seals.In order to facilitate dimensional analysis on the flow resistance characteristics of labyrinth seals,the variable cross-section of the flow channels are considered as constant cross-section flow.The mechanical energy loss of flow caused by throttle turbulence intensity is considered as caused by friction along the way.The friction coefficient of stepped labyrinth seals is bigger than that of straight-through labyrinth seals by more than 40% for the same Reynolds number and the ratio of equivalent diameter and the seal length.The expression of friction coefficient /and /Re are obtained from experimental data.The verifications indicate that the expressions are highly accurate.The contribution to the total pressure drop of each tooth cavity gradually becomes less along the flow direction. 展开更多
关键词 straight-through labyrinth seal stepped and straight-through labyrinth seal dimensional analysis resistance characteristic
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