2results about How to "Correct distortion" patented technology

The present application relates to a kind of wind tunnel test complex building surface pressure measuring pipe signal distortion correction method, it is related to wind tunnel test data processing field.This method includes the following steps: S1, building model is prepared, region is divided, and measurement point is set;S2, the pressure measuring tube diameter at measurement point of wind tunnel test is determined;S3, wind tunnel test is carried out, and the result is handled to obtain wind pressure time history;S4, wind pressure time history is filtered;S5, to the distorted pressure measuring pipe signal is corrected, and the real signal time history is obtained.This method can be more accurate by twice filtering, the pipe distortion problem that appears in pressure measurement time is corrected, it is suitable for the region of complex building deformation larger.And this method can effectively improve the accuracy of wind tunnel test measured data, better help production and scientific research work development.The existing method only considers the characteristics of pressure measuring tube, and the correction method is simple, and the problem of easy to produce error correction result is solved.

The utility model discloses an evaporator fin pressing device, which belongs to the technical field of evaporator production and comprises a support frame used for supporting evaporator fins, a fixing plate is mounted at the top of the support frame, four fixing rods used for supporting and guiding are welded at the top of the fixing plate, a mounting plate is mounted at the tops of the fixing rods, and the mounting plate is mounted on the support frame. A power box and a telescopic rod are mounted at the top of the mounting plate, a movable part of the telescopic rod is connected with a connecting disc, a pressing plate is welded to the bottom of the connecting disc, a cross-shaped groove for guiding is formed in the pressing plate, a cross-shaped moving plate is slidably mounted in the cross-shaped groove, a connecting column is connected to one side of the cross-shaped moving plate, and the connecting column is connected to the other side of the cross-shaped moving plate. According to the evaporator fin pressing device, the pre-pressing capacity can be improved, distortion or deviation generated in the production and transportation process of fins can be effectively corrected, the pressing uniformity and stability are improved, the production efficiency is improved, and the cost is reduced.