ВИЯВЛЕННЯ ВПЛИВУ ДИСБАЛАНСУ РОБОЧОГО КОЛЕСА НА ВІБРАЦІЙНІ ПАРАМЕТРИ ПОЖЕЖНОГО НАСОСА ПН-40УВ ПІД ЧАС ЙОГО РОБОТИ

Abstract

Degradation of the centrifugal pumps, installed onfire engines, causes the loss of their tactical and technical characteristics. The experimental test of centrifugal fire pump with disbalanced impeller has been done for determining the patterns of change in vibration characteristics of the pump because of the presence of such a defect. It has been found that clogging of the impeller leads to disbalance increasing that strengthens the vibration, especially inthe vertical plane. The corresponding effect has been stronger during testingthe pump without water because in that case the axial component force has been minimal.