维修标准（Maintenance standard）.docVIP

维修标准（Maintenance standard） Centrifugal pump maintenance standard hits: 999 release date: 2011-12-1 Centrifugal pump maintenance procedures, maintenance of centrifugal pump, centrifugal pump maintenance procedures The centrifugal pump is generally one year overhaul time, total running time of less than 2000h, according to the specific circumstances appropriate to extend. The centrifugal pump overhaul procedures are as follows. Centrifugal pump overhaul procedures (1) 0.05% more than the original diameter of the pump shaft bending, should be corrected. Pump shaft and shaft sleeve of the nonconcentricity should not exceed 0.05mm, more than to replace the sleeve. The pump shaft corrosion or wear more than 2% of the original diameter, should be replaced with new shaft. Centrifugal pump overhaul procedures (2) Rules of the sleeve wear more than 3% of the original diameter, irregular shell l wear more than 2% of the original diameter, are to be renewed. At the same time, check the shaft and sleeve contact surface without traces of water seepage, and the impeller shaft sleeve pad of paper is complete, does not meet the requirements should be amended or replaced. A new shaft sleeve tight and bearing different degrees of heart, not more than 0.0gmm. Centrifugal pump overhaul procedures (3) FRP centrifugal pump impeller and blade if there are cracks, damage and corrosion. The light can be used such as epoxy resin repair, serious to replace the new impeller. The connection position of the impeller and shaft such as loose and porous, should be amended or replaced with key impeller pump shaft after the wobble value shall not exceed 0.05mm (this value is only for reference, because of some high speed impeller wobble value higher requirements). The impeller trim or replacement of the requirements check the dynamic balance and static balance, if exceed the allowable range should be promptly corrected, for example, will remove the heavier side of some, but prohibited to balance metho