Multistage centrifugal high-lift pump alignment

multistage centrifugal high lift pump to find is

a. Drive shaft and high-lift pump pump shaft, drive shaft and transmission shaft with coupling connection, two and a half coupling axis tilt and radial displacement and side clearance, shall comply with the provisions of the equipment technical documents. When no provisions, shall comply with the mechanical equipment installation engineering construction and acceptance of the general specification '.

b。 Drive shaft is connected to the pump shaft by the belt, two axes parallel degree, two rounds of migration should be consistent with the mechanical equipment installation engineering construction and acceptance of the general specification '.

c。 The steam turbine driven pump and conveying high temperature, low temperature liquid water pump ( Boiler feed water pump, heat pump, cryogenic pump, etc. ) Under the normal temperature condition for timing should be reserved as stipulated in the design of the compensation value of the temperature change.

(4) high speed or disintegration of large pump installation should measure the rotor, shaft sleeve, the impeller sealing ring, main part of balance disc, journal of radial and face runout value, the deviation should be allowed to meet the provisions of the equipment, technical documents.

(5) between rotor and shell components of rotor radial clearance shall comply with the provisions of the equipment technical documents. Impeller in cochlear indoor front axle and rear axle to the clearance, the axial size of the sectional multi-stage pump shall comply with the provisions of the equipment technical documents; Multistage pump plane between the original the thickness of the gasket may not change at all levels. High temperature balance disc ( Drum) And balance, the axial clearance between the single shell sectional pump should be 0. 04 ~ 0. 8 mm, double shell pump should be 0. 35 ~ lmm; Thrust bearing and thrust plate of axial always ask gap between the single shell sectional pump should be 0. 5 ~ LMM, the double pump shell should be 0. 5 to 0. 7毫米。 The centerline of the impeller outlet shall be the pump shell port center line of alignment. Multistage pump in the balance disc and the balance board depend on tight case, the width of the impeller out of Vl should be within the scope of import guide vane width.

6 centrifugal pump bearing sliding bearing and the bearing seat on the back should fit closely, the interference value should be zero. 02 ~ 0. Within the scope of 4 mm; Bearing and journal asked top clearance and side clearance shall comply with the provisions of the equipment technical documents. Rolling bearing and shaft and the fit tolerance of the bearing, roller bearing and asked the axial gap between the end cover and medium temperature caused by the axial expansion gap, the centripetal thrust bearing radial clearance and pre-tightening force of requirements shall be in accordance with the equipment technical documents of inspection and adjustment. When no provisions, should according to the current national standard 'mechanical equipment installation engineering construction and acceptance of the general specification shall prevail.

7) assembly packing seal radial clearance shall comply with the provisions of the equipment technical documents. When no provisions, shall conform to table 2 - After 2 request, packing pressure, packing ring into liquid and liquid seal tube mouth should aim at or slightly to the outer packing ring.

today other labyrinth seal mechanical seal, the floating ring seal, seal and other forms of the various parts of the shaft seal clearance and contact requirements shall comply with the provisions of the equipment technical documents. When no provisions, shall comply with the mechanical equipment installation engineering construction and acceptance of the general specification '.

pet-name ruby rotor axial channeling momentum dynamic rotor rotating shaft seal assembled plate should be flexible; The rotor axial channeling momentum should comply with the provisions of the equipment technical documents. pump shell of double shell inner shell, shell assembly should be according to the provisions of the equipment technical documents to keep; The stud screw down the bolt and nut rotation Angle should comply with the regulations of design.

check before attending the centrifugal water pump test run

a. The turning of the drive should be consistent with the turning of the centrifugal pump.

b。 Should find out the pipes and coaxial pump turning.

C。 Check the shielding pump turning.

　　d. All the fixed connection parts should not loose.

e。 The lubrication parts filling specification and quantity of lubricant should comply with the provisions of the equipment technical documents, there is a requirement for prelubricated prelubricated part should be in accordance with the provisions.

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