Mechanical Performance Analysis Of Flat Spiral Spring And Its Connection For Mechanical Elastic Energy Storage

Renewable energy,such as wind energy and solar energy,brings impetus to the social and economic development,but its intermittent and uncertainty bring serious challenges to energy utilization.In order to improve the controllability of the output power of the wind and solar power system and the stability of the power grid,make the power regulation more flexible,the large capacity energy storage technology becomes the key to solve the problem.Based on the mechanical elastic energy storage system,this paper design the important composition unit of mechanical elastic energy storage box,combine with high energy density requirements,carry out the material selection that the spiral spring is the key parts of the energy storage box,establish the spiral spring geometry model,make energy density calculation and finite element analysis,design the structure and finite element analysis of the spiral spring on both ends of the connection.The main contents are as follows:(1)Based on the scheme of the mechanical elastic energy storage system,the structural design of the mechanical elastic energy storage tank and its main components is carried out.(2)The spiral spring are established the geometric model by Archimedes spiral and logarithmic spiral,carried on the stress analysis;after studying influence factors of spiral spring energy storage density and analysis of steel,glass fiber,carbon fiber and other materials with different spiral spring energy density,the glass fiber are chose as the spiral spring material combined with the economic.(3)The glass fiber mechanical properties of the material are determined through the tensile test of the spiral spring material and provided the basic data for the analysis of the mechanical properties of the following research.(4)By setting up the finite element model of the spiral spring,the deformation and stress distribution of the cochlear spring under the two states of Archimedes spiral line and logarithmic spiral line are analyzed.Connections are analyzed,of the spiral spring and the inner end of the core shaft and the spiral spring and the outer end of the inner wall of the box.For the connecting of the spiral spring and the core shaft,the method of box form-screw group-pressing block is proposed,and the connecting piece and is connected through the finite element modeling and stress analysis for.As for the connecting of the spiral spring and the outer end of the inner wall of the box,the Gasket-screw group connection is proposed,established the finite element model of the connection,analyzed the influence of gasket of different length of the spiral spring in order to determine the appropriate length of gasket.(5)According to the finite element modal analysis,the vibration of the single worm reed box is analyzed by comparing the different frequency and vibration modes...