水压下大应变测试密封技术研究  

Research on Sealing Technology of Large Strain Measurement under Hydraulic Pressure

作　　者：张小平[1] 李克明[1] 顾超华[1,2] 孙国有[1,2] 郑津洋[1,2,3] 

机构地区：[1]浙江大学化工机械研究所,浙江杭州310027 [2]浙江大学高压过程装备与安全教育部工程研究中心,浙江杭州310027 [3]浙江大学流体动力与机电系统国家重点实验室,浙江杭州310027

出　　处：《轻工机械》2016年第4期32-37,共6页Light Industry Machinery

基　　金：国家重大科技专项(ZB01K10W09)

摘　　要：水压下的应变测试中测试系统的密封防护是应变测量成功与否的关键。针对在水压及大应变条件下,常规密封防护方法易出现密封防护剂松脱,难以保证绝缘和密封性能的情况,文章提出了水压下大应变测试的密封技术。通过试验研究了环氧树脂+硅橡胶、硅橡胶对大应变的适应性,设计了压力温度的补偿方法和应变测试系统的密封工艺。水压为2.0 MPa,应变为4.5%的实验案例表明,文章提出的水压下大应变测试密封技术可行并且有效。In the strain measurement under the condition of water pressure,the sealing protection of testing system is the key to the success of strain measurement. However,the seal protective agent in the conventional strain measurement under the condition of water pressure and large strain is easy to loose and it is difficult to guarantee insulation snd sealing performance. This paper studied the sealing technology of large strain measurement system under hydraulic pressure.Specifically,the epoxy resin and silicone rubber were selected by experimental study,and the compensation method of pressure and temperature was optimally designed. And then the concrete sealing process of strain measurement system was improved. The feasibility and effectiveness of the sealing technology of large strain measurement under hydraulic pressure was well verified by test case with hydraulic pressure 2. 0 MPa and strain 4. 5%.

关 键 词：密封技术 应变测试 大应变 防护剂 

分 类 号：TB42[一般工业技术]