注采联作滑套阀用弹簧片的设计与实验验证

The design and experimental verification of spring strips used in sliding sleeve valve of injection-production combination

弹簧片是用于稠油热采工艺中注采联作技术滑套阀的关键部件,能够带动滑套运动,实现滑套阀的开闭功能。采用等效法将弹簧片等效为两端固定梯形拱梁,根据叠加原理推导出弹簧片最大挠度数学模型。运用ABAQUS软件对弹簧片进行强度与变形有限元分析,确定了弹簧片设计的合理性。对滑套阀系列中多种弹簧片进行有限元分析,与数学模型计算结果对比,以误差大小为依据定义修正因数,完成数学模型的优化。最终通过实验验证了弹簧片最大挠度数学模型的准确性,为此类弹簧片的设计提供了理论依据。

Spring strip is a key component of sliding sleeve valve used in the injection-production combination technology of heavy oil thermal recovery. It can drive the sliding sleeve movement and achieve the function of open and close of sliding sleeve valve. Using the method of equal effects, spring strip was equivalent to arched beam with both ends fixed. And the mathematical model for maximum deflection of spring strip was deduced based on the superposition principle. The finite element analysis was used to simulate the strengthand deformation of spring strip via ABAQUS software to make sure the rationality of the design of spring strip. Did the finite element analysis of various spring strips in the sliding sleeve valve series and compared with calculation re- suits of mathematical model. And then defined the correction factor based on the error magnitude to achieve the optimization of mathematical model. Finally the accuracy of the mathematical model for maximum deflection of spring strip was verified by experi- ment and which provides the theoretical basis for the design of similar spring strips.