Concentricity measuring device for vertical type axial-flow pump unit

Abstract

The invention provides a concentricity measuring device for a vertical type axial-flow pump unit. If the axis of a vertical motor and the axis of a vertical type axial-flow pump are not in the same vertical line, a bearing is not uniformly stressed during operation. During operation, the bearing generates heat and the pump unit generates the vibration and the noise. When the condition gets severer, the pump unit might not run. Therefore, during the installation of the vertical type axial-flow pump unit, the concentricity of the vertical type axial-flow pump unit might be measured. During the particular application process, an internal dial gauge, an upper guide bearing of a vertical type axial-flow pump, a lower guide bearing of the vertical type axial-flow pump, a headset, a battery and a centering device are connected to form an electrical loop through insulated flexible wires. The measurement is conducted repeatedly, and then the shortest length of a measuring rod at each point is obtained as the distance between a piano wire and the sidewall of a guide bearing. Meanwhile, the measured data of each point is recorded into a table. According to a measurement record, the concentricity deviation value of a component can be calculated. When the concentric deviation value does not meet the requirement, the installation of the vertical type axial-flow pump is adjusted. In this way, the concentric deviation value is adjusted to meet the installation requirement. The installation quality of the vertical type axial-flow pump unit is ensured.

Description

[0001] 1. Technical field [0002] The invention relates to a device for measuring the concentricity of a vertical axial flow pump unit, in particular to measuring the concentricity of a vertical axial flow pump unit to ensure that the axes of the vertical motor and the vertical axial flow pump are on the same vertical line, so that the vertical axis The flow pump unit operates normally, smoothly and safely. [0003] 2. Background technology [0004] Vertical axial flow pump units are widely used in farmland irrigation and drainage, urban water supply and drainage, industrial and mining, and enterprises and institutions, and play a decisive role in high and stable agricultural production; Provide reliable protection for water and drainage. The installation quality of the vertical axial flow pump unit not only directly affects the operation, management and maintenance of the vertical axial flow pump unit, but also affects the operating efficiency and service life of the vertica...

AI Technical Summary

Problems solved by technology

The installation quality of the vertical axial flow pump unit not only directly affects the operation, management and maintenance of the vertical axial flow pump unit, but also affects the operating efficiency and service life of the vertical axial flow pump unit

[0005] If the two shafts of the vertical motor and the vertical axial flow pump do not meet the installation requirements, that is, the axes of the vertical motor and the vertical axial flow pump are not on the same vertical line, the shafts of the vertical motor and the vertical axial flow pump are not in operation. The shaft is affected by the periodic bending stress, which will cause the bearing to be stressed unevenly, the bearing will heat up during operation, the unit will generate vibration and noise, and in severe cases, the unit will not be able to operate

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