Vertical circulating pump impeller balance test to do

Circulating pump have vertical and horizontal form, is an important part inside the circulating water pump impeller, the impeller maintenance problems need to change, you need to do to balance testing? when doing the dynamic balance, which is do together, the whole rotor parts replaced, impeller balance also changed, you need to find is, if it is a common single pump, then don't need it, because its residual unbalance on the influence of the pump is not big, if it is a high-speed pump, or a multi-stage pump, it would need to do dynamic balance, the multistage pump, to put little of rotor, the dynamic balance, mark the location of various parts of the general assembly, then the whole pump so as to achieve the effect of dynamic balance. To do dynamic balance of pump rotor conditions: high speed pump to do dynamic balance test, low speed of general pump only do static balance. If any rigid rotor can not meet to do static balance disc rotor, the condition of two surfaces is performed to balance, namely, dynamic balance. Only do static balance condition of rotor is as follows, Static balance G0. Level 4 for the high precision, usually choose G6 dynamic balance of water pump impeller static degrees. Level 3 or G2. 5) : 1, the single-stage pump, two levels of pump rotor, every job rotation speed & ge; 1800 RPM, as long as D/b< 6, what should to do dynamic balance. 2, the multistage pump and composite rotor ( Level 3 or level 3 or above) Should be done, no matter how much work speed, combination of rotor dynamic balance. 3, general single-stage centrifugal pump don't have to do. , large single pump ( 3000 m3 circulating pump) You need to do. 4, multi-stage pump, high-speed pump also need to do it; Formal impeller of pump fabrication factories in the factory has to do static balance. Usually single pump in the impeller without having to do dynamic balance test, but should guarantee the replacement of the impeller had parts in the dynamic balance test ( If the dynamic balance test users and cutting the impeller diameter, need to fill do dynamic balance test) , change for multistage centrifugal pump, the impeller, even if the impeller dynamic balance test have been done, replacement, the impeller is installed on the pump shaft, the rotor dynamic balancing still need to test, and remembering the locations of each parts, and then remove the press balance test location to install the pump impeller.
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