摘要
扭力管作为电浮筒液位计的关键零部件,须具备足够强度和扭转弹性,以保证液位计具有较高的测量精度和较长使用寿命。扭力管选用外径6 mm,长度286 mm,壁厚1.2 mm的inconel625等径圆管,理论求解得到扭力管正常工作时最大切应力和单位长度扭转角为73.17 MPa和0.309 rad/m,分别低于inconel625材料许用值;运用有限元分析软件ANSYS对扭力管进行静力学分析,得到扭力管最大切应力和单位长度扭转角为74.6 MPa和0.311 rad/m,与理论计算值误差分别为1.95%和0.65%。论文研究结论与方法为电浮筒液位计关键零部件强度设计提供参考和依据。
As the key component of the float level gauge,torque tube must have enough strength and torsional flexibility to ensure that the level gauge has high measurement accuracy and long life.The inconel625 alloy circular tube with the diameter of 6 mm,length of 286 mm and with wall thickness of 1.2 mm is selected.The maximum shear stress and the torsion angle unit length of the torque tube are 73.17 MPa and 0.309 rad/m when working normally,below the allowable values of the material of inconel625.The static analysis for the torque tube is done with the software of ANSYS and the maximum shear stress and torsional angle of per unit length are 74.6 MPa and 0.311 rad/m.The errors are 1.95%and 0.65%respectively.The reference and basis are provided from the method on the strength research of the key part of electric float level gauge.
作者
韩彦龙
HAN Yan-long(Department of Mechanical Engineering,Chengde Petroleum College,Chengde 067000,Hebei,China)
出处
《承德石油高等专科学校学报》
CAS
2018年第1期25-27,共3页
Journal of Chengde Petroleum College
基金
承德市科技支撑项目(基于HARA总线技术的电浮筒液位计研发):201422116
关键词
电浮筒液位计
扭力管
强度设计
静力学分析
electric float level gauge
torque tube
strength design
static analysis
