不同激光表面造型机械密封环的性能试验研究  

Study on Performance Test of Different Types of Laser Surface Texturing Seal

作　　者：符永宏[1] 汤新雄[1] 华希俊[1] 黄骞[1] 

机构地区：[1]江苏大学,江苏镇江212013

出　　处：《流体机械》2010年第8期1-4,共4页Fluid Machinery

基　　金：国家自然科学基金资助项目(50475122);镇江市工业科技攻关项目(GY2005018);江苏省高技术重大项目BG2007023;江苏省高校自然科学基础研究项目(06KJB480019);江苏省自然科学基金项目(BK2007095);江苏省高校自然科学基础研究项目(06KJB460014);中国博士后基金(20070420190)

摘　　要：将2种典型表面造型机械密封环,即微凹腔造型和腔与槽结合造型的密封环,与未造型密封环进行了密封和摩擦性能的对比试验。试验结果表明2种造型的机械密封与未造型的相比具有明显优越性能:凹腔机械密封在一定工况范围内无泄漏,且具有相对于未造型良好的摩擦性能;槽腔结合机械密封在整个过程中均无泄漏,其摩擦系数远小于未造型的。凹腔机械密封也存在一些缺点:在介质压力较小工况下试验时泄漏较大;在介质压力大而转速小时摩擦扭矩较大。分析表明:凹腔环的凹腔造型在端面载荷较大,存在轴向振动的情况下会增大摩擦系数;槽腔结合环的泵送槽能够容纳液体,具有润滑和缓冲振动的作用。Two typical types of laser surface texturing seals-seal with micro pores and seal with micro pores and pumping grooves together on the ring face,were tested on sealability and frictional behavior,contrasting with non-texturing seal.It is shown that,the two types of texturing seals have excellent sealing and lubricating property.Specifically,seal with micro pores has comparatively better sealing and lubricating property than the non-texturing one in some conditions.And the seal with micro pores and macro pumping grooves performed better property in all test conditions.However the micro-pores texturing type has some shortcomings.It leaked a lot in low-load condition.On the other hand it showed considerable friction in high-load and low rotate speed conditions.Conclusions could be drawn： Firstly,the friction coefficient of seal with pores may increase under high load and axial vibration conditions because of the pores.Secondly,besides pumping effect,the grooves of seal with pores and pumping grooves can hold liquid.When the liquid goes into interfaces.The faces were lubricated and the axial vibration was absorbed.

关 键 词：机械密封 激光表面造型 性能对比试验 

分 类 号：TH136[机械工程—机械制造及自动化]