发动机缸盖用冲刺复合垫片性能研究  

Research on Performance of Sprinting Composite Gasket for Engine Cylinder Head

作　　者：颜星星 杨勇[2] 刘元杰 黄志强 刘钦 周先军 YAN Xing-xing;YANG Yong;LIU Yuan-jie;HUANG Zhi-qiang;LIU Qin;ZHOU Xian-jun(School of Mechanical and Electronic Engineering,China University of Petroleum,Qingdao 266580,China;Technology Inspection Center of Shengli Oilfield,SINOPEC,Dongying 257100,China;Binzhou Shuangfeng graphite Sealing Material Co.,Ltd.,Binzhou 256615,China;Shengli Oil-field Lusheng Petroleum Development Co.Ltd.,Dongying 257067,China)

机构地区：[1]中国石油大学(华东)机电工程学院,山东青岛266580 [2]中国石化胜利油田分公司技术检测中心,山东东营257100 [3]滨州双峰石墨密封材料有限公司,山东滨州256615 [4]胜利油田鲁胜石油开发有限公司,山东东营257067

出　　处：《液压气动与密封》2023年第2期111-115,共5页Hydraulics Pneumatics & Seals

摘　　要：石墨冲刺复合垫片具有良好的回弹性、压缩性、密封性、耐高温高压等优点,是发动机气缸盖常用的一种垫片。首先使用300T高温通用型密封件检测设备完成了20℃常温条件与100℃高温条件下复合垫片的机械性能试验。结果表明,常温条件下垫片的压缩率为21.33%,回弹率为28.30%;高温条件下垫片的压缩率为20.47%,回弹率为32.77%,满足发动机气缸垫技术要求。然后进行了垫片的密封性能试验,试验表明载荷为35 MPa时,泄漏率为0.08×10^(-3)mm^(3)/s,垫片的密封性能良好。最后采用Workbench软件对发动机停车、启动和正常运转3种工况下气缸垫的密封性能进行了模拟,分析表明螺栓预紧力应大于52.5 kN可满足密封要求。Graphite sprint composite gasket has the advantages of good resilience,compressibility,tightness,high temperature and high pressure resistance,etc.It is a commonly used gasket for engine cylinder heads.Firstly,the mechanical performance test of the composite gasket under normal temperature and high temperature conditions was completed.The results indicated that the compression rate of the gasket under normal temperature conditions was 21.33%,and the rebound rate was 28.30%;the compression ratio of the gasket under high temperature conditions was 20.47%,and the rebound rate was 32.77%.The performance was qualified and met the technical requirements for engine cylinder gaskets.Secondly,the sealing performance test of the gasket was completed.When the load was 35 MPa,the leakage rate was 0.08×10^(-3)mm^(3)/s,and the sealing performance of the cylinder gasket was good.Finally,using Workbench software to simulate the sealing performance of the cylinder head gasket under different working conditions,analysis shows that in order to achieve good sealing effect under three working conditions,the preload of bolts shall be greater than 52.5 kN.

关 键 词：气缸垫 柔性石墨:复合垫片 机械性能 密封性能 

分 类 号：TB42[一般工业技术]