At all overhaul of oil pump in Chemical factory ,as multilevel oil pump is multilevel, high pressure ,high running speed, so,the technology of oil pump is more valuable. And in the ouerhaul of multilevel oil pump ,if the running parts and the quiet parts one both fine the quality of the ouerhaul of multilevel oil pump.totally depends on the accurate meaourement and adjustment of clearance .In many clearance and datas of ouerhaul ,all of them ane not standalone but contact and nestricts mutually with each other . Each data of the clearance is due to the manufactacture and hcrring request.therefore ,accurate measurement and adjustment of the clearance are very important. Now at the use of multilevel oil pump of high pressure and highest head、double-casing volute pump and research the measurement、adjustmert and control of the control of the clearance from the overhaul .
When it's time to of overhaul of the pump of chemical ,we should maste the structure of the pump firstly and we should remember the following four important links:accurate dismantle ;theclean,cheack、repair or change of the comporents ;install accurately; the locationamong the components and adjustment and control of the clearance .
Adjustment and control in the process of the pump install is depend on changing the thickness of gasket,controling the lirk power and regulating bolt which are specialized. when necessary, the size of components can be changed.
So,in the process of overhaul .the clearance measurement and control one very important and play a pivotal to the quality overhaul.
Keywords: Multistage Pump, Overhaul, Clearance Measurement, Control