A rotor pump wheel installation and positioning structure

Abstract

The invention discloses a rotor pump wheel installation and positioning structure, which includes a pump wheel, a shaft sleeve and a lock nut; the pump wheel and the shaft sleeve are adjacently installed on the rotor to form a combination of the pump wheel and the shaft sleeve; it is characterized in that: The pump wheel has a convex cone surface, and the convex cone surface is inserted into the adjacent bushing; the end of the bushing has a convex cone surface or a concave cone surface; the lock nut is installed on the rotor, and the pump wheel, The shaft sleeve is tightened according to the specified tightening torque. The invention improves the stability and reliability of the positioning coordination between the pump wheel, the shaft sleeve and the rotor, and ensures that each component can be reassembled more accurately after dynamic balance, maintenance, replacement and disassembly without changing the dynamic balance state, thereby reducing its Unbalanced response reduces unit vibration and noise.

Description

technical field [0001] The invention relates to a marine water feed pump unit, in particular to a rotor pump wheel installation and positioning structure. Background technique [0002] In the actual working state of the marine feed water pump unit, the feed water pump unit needs to be repaired and replaced frequently, so the pump wheel needs to be disassembled frequently, but the disassembly and assembly of the pump wheel will cause the position and state of each reinstallation to change, thus changing the original state of dynamic balance. The particularity of the working environment of the feed pump unit makes it impossible to readjust the dynamic balance state of the water pump after each disassembly, such as figure 1 As shown, the structure of the conventional feed water pump rotor pump wheel generally adopts the ordinary axial positioning method: there is a certain fit gap between the pump wheel, the bushing and the rotor, which leads to the original dynamic balance st...

AI Technical Summary

Problems solved by technology

[0002] In the actual working state of the marine feed water pump unit, the feed water pump unit needs to be repaired and replaced frequently, so the pump wheel needs to be disassembled frequently, but the disassembly and assembly of the pump wheel will cause the position and state of each reinstallation to change, thus changing the original dynamic balance state

The particularity of the working environment of the feed pump unit makes it impossible to readjust the dynamic balance state of the water pump after each disassembly, such as figure 1 As shown, the structure of the conventional feed water pump rotor pump wheel generally adopts the ordinary axial positioning method: there is a certain fit gap between the pump wheel, the bushing and the rotor, which leads to the original dynamic balance state of the rotor pump wheel after each disassembly and assembly of the pump wheel Changes occur, and large vibration noise will be generated during high-speed rotation

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