Numerical study and design of the compressor’s crankshaft

Reciprocating compressors are utilized in all manufacturing industries. Because these machines are capable of providing high pressure along with variable loading, they are favored for many gas process applications. The crank-shaft is a very important part of the reciprocating compressor, but suffers from the high fraction defective of finished products, hence a high performance of the lubrication resulting from fluid dynamics is strongly demanded. The structure of the crank-shaft is normal but the oil hole in the crankshaft is so complicated that the actual structure of the crank-shaft is different from the designed and the oil-film develops incompletion. All of these will cause locking problem. So we want to design the structure of the oil-hole to improve the lubrication between the crankshaft and the bearing. We use CT (computed tomography) scanner to scan the crank-shaft, and re-created crank-shaftpsilas model. Then predict the stress and deformation of the crank-shaft. The model analysis provided valuable theoretic basis for the improvement of the compressorpsilas crankshaft. Finally, we improve the structure of the crank-shaft, the oil-film develops easily than the previous one, and itpsilas high quantity to product.