Centering method of rotor assembly during multistage pump assembling

Abstract

The invention discloses a method for centering a rotor assembly when a multi-stage pump is assembled. The shaft with the shaft sleeve and key at the suction end is inserted into the suction shell; The front shaft sleeve, and then move the pump shaft so that the center of the outlet of the first-stage impeller is consistent with the center of the inlet of the first-stage guide vane; after laying a layer of green shell paper pad on the middle section, install the middle section and the second-stage impeller, and then, Install the impeller retaining sleeve, the middle section, the third-stage impeller..., and the pump casing in turn, install the pump body bolts and nuts, and tighten the nuts; install the balance plate, and use the bushing and bushing lock nut to balance Lock the disk tightly, put the balance disk close to the balance ring, and check the mark on the front end of the pump shaft. Since the distance between the impeller and the guide vane has been measured and adjusted to be equal before assembly, the impellers of each level are aligned with the corresponding guide vanes. . Through this method, the centering can be accurately realized and the safety of the multi-stage pump can be guaranteed.

Description

technical field [0001] The invention relates to a method, in particular to a method for centering a rotor assembly when a multistage pump is assembled. Background technique [0002] Machinery refers to the general term for machines and mechanisms. Machinery is a tool device that can help people reduce the difficulty of work or save labor. Items such as chopsticks, brooms, and tweezers can all be called machines, and they are simple machines. A complex machine is composed of two or more simple machines. These more complex machines are usually called machines. From the point of view of structure and motion, there is no difference between a mechanism and a machine, and it is generally called a machine. Generally speaking, machinery is a tool device that can help people reduce the difficulty of work or save labor. Items such as chopsticks, brooms, and tweezers can all be called machinery, and they are simple machinery. A complex machine is composed of two or more simple mach...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned problem that the rotor assembly cannot be accurately centered when the multi-stage pump is assembled, resulting in a great risk in the use of the multi-stage pump, and a multi-stage pump assembly is designed. The centering method of the rotor assembly, through which the centering can be accurately realized to ensure the safety of the multi-stage pump