The liquid ammonia pump body has a large number of liquid ammonia leakage accidents caused by multiple fractures of the front double-headed
Bolts, which seriously threatens the safe production of the whole set of equipment. On-site observation of the bolt fracture surface is located at the rotation end of the pump body, and the first thread is located from the support surface. Since the thread is much stronger than other thread teeth, and the bolt is subjected to the tensile stress, the bolt is up. During the service life, fatigue fracture will occur first, so we believe that the main cause of bolt breakage is the service life.
In order to eliminate hidden dangers, the stud bolts were updated and the bolt structure and processing method were improved. The bolts of the original common design were redesigned as shown in the figure. Through the above technical improvement of the pump, the comprehensive technical performance of the liquid ammonia pump of our factory has been greatly improved, the operation rate has been obviously improved, and the safe and reliable pump is realized, and the operation is economical and environmentally friendly.
