Research On The Modal And Wind Effect Of Condenser Strcture

Condenser structure is a very important part of concentrating solar thermal power generation system. Due to the structure of the condenser is mostly located in the relativel y open outdoor, so the loads are more complex, the premise of r esea rch is doing modal analusis through prototype testing. The windward side of condenser structure is ver y big, wind load is the main load, and the wind load is determined b y wind speed, so the simulation of wind speed is very important. The Mirror plate of condenser structure is greatl y influenced b y the wind-induced response, and research on the deformation of mirror plate, which is suitable for the calculation method and corresponding formula of mirror plate deformation to be given, it is advantageous to put forward the reasonable la yout scheme of mirror under wind resistant condition. Based on this, this paper does some research work as follows:Firstly, it is the finite element modal anal ysis of condenser structure. Through the relevant model is established in the M IDAS software, anal ysis and processing, get the relevant modal parameters and vibration mode figure of the model of condenser structure, and do a preliminar y analysis of the results.Secondly, it is the field prototype modal test of groove type condenser structure. With groove t ype condenser as a prototype for modal testing, is helpful to get the true inner d ynamic characteristic parameters. Then the modal parameters of the structure can be obtained b y the modal anal ysis. By comparing the measured modal parameters with the results obtained by M IDAS software simulation, to laid the foundation of the theoretical research and engineering practice for next step.Once again, it is the simulation of the time history of wind speed. In this paper, a new fractal simulation method is proposed for near surface fluctuating wind speed. Compared with the traditional linear filter method and harmonic superposition method, a new fractal simulation method takes into account the self similar fractal characteristics of the wind speed fluctuations, and the precision and the correlation degree is also better, which makes up some shortcomings of the traditional method.Finally, it is the study of deformation of mirror plate of condenser structure. In view of the specific study of mirror panel deflection, the first is analyzed from the aspects of theor y, appropriate calculation method is given, and then the calculation and anal ysis of actual examples can be done. While rel ying on to the prototype of groove t ype condenser structure, b y using the simulation of MIDAS software, the finite element software gives the results of simulation. The theoretical results are compared with the simulation results, and the reasonable results are obtained.