Factor Probe of Changing Water Pump from Filling Seal into Machinery Seal

When the cap is loose,it will induce large leakage,and large quantity of air may leak into vacuum draft,whereas the cap is tight,it may induce friction increase,and the mechanical loss increase too,water pump routine operation may be serious affected.Mechanical seal has been broadly applied in thermal power plant because of small leakage,realizable seal,little friction,and long maintenance period,the paper analyzes external disadvantage of changing water pump from filling seal into mechanical seal,and the influence of mechanical seal on seal effect.