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Structure for improving rigidity of rotor

A rigidity and rotor technology, applied in the structural field of improving the rigidity of the rotor, can solve problems such as resonance, achieve the effect of prolonging the operating life, simple and reliable connection structure, and improving rigidity

Pending Publication Date: 2020-08-07
HANGZHOU ALKALI PUMP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if you continue to increase the speed of the rotor, the above phenomenon will continue to appear repeatedly, that is, the resonance phenomenon.

Method used

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  • Structure for improving rigidity of rotor

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Embodiment

[0013] Example: as attached figure 1 As shown, this structure for improving the rigidity of the rotor includes an impeller hub 1, an impeller sleeve 2, a shaft 3, and a mechanical seal sleeve 4. The shaft 3 is sleeved with an impeller sleeve 2, and the left end of the impeller sleeve 2 A tapered surface is provided on the outer circular surface of the impeller hub 1 and matched with the inner circular surface of the right end of the impeller hub 1 to form a conical connection. The outer circular surface of the right end of the impeller sleeve 2 is provided with a tapered surface and is connected with The conical surfaces arranged on the inner circular surface of the left end of the mechanical seal sleeve 4 cooperate with each other to form a conical connection; the left end of the shaft 3 is fixedly connected to the impeller hub 1 through the impeller nut 5 and locked with the conical sleeve 6, A washer 12 is arranged between the impeller nut 5 and the impeller hub 1. A water gu...

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Abstract

The invention discloses a structure for improving the rigidity of a rotor, and relates to the field of axial flow pump rotors. The structure comprises an impeller hub, an impeller shaft sleeve, a shaft and a mechanical seal shaft sleeve, wherein the impeller shaft sleeve is arranged on the shaft in a sleeving mode, a conical surface is arranged on the outer circle surface of an end of the left side of the impeller shaft sleeve and is matched with a conical surface arranged on the inner circle surface of an end of the right side of the impeller hub to form conical surface connection, and a conical surface is arranged on the outer circle surface of the end of the right side of the impeller shaft sleeve and is matched with a conical surface arranged on the inner circle surface of an end of the left side of the mechanical seal shaft sleeve to form conical surface connection; and an end of the left side of the shaft is fixedly connected with the impeller hub through an impeller nut and is locked by a conical sleeve, and a water guide cone is fixedly arranged at an end of the left side of the impeller hub. The structure has the beneficial effects that the connecting structure is simple and reliable, the rigidity of the rotor is greatly improved, the operation service life of an axial flow pump is effectively prolonged, and therefore, the frequency of shutdown maintenance of a pump body is reduced.

Description

Technical field [0001] The invention relates to the field of axial flow pump rotors, in particular to a structure for improving the rigidity of the rotor. Background technique [0002] Observing the rotating rotor, it can be found that when the rotation speed of the rotor increases from the start to a certain rotation speed, the rotation of the rotor becomes unstable, resulting in strong repeated deformation and vibration. At this time, if you continue to increase the speed of the rotor, the above phenomenon will continue to recur, that is, resonance. The speed that causes the first resonance is called the first critical speed of the rotor. The critical speed of the rotor mainly depends on the internal factors of the rotor: mass and rigidity coefficient. Therefore, when the pump is running, avoid running at the critical speed. Based on the performance characteristics of axial flow pumps with large flow, our company has designed a structure to improve the rigidity of the rotor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/18F04D29/20
CPCF04D29/181F04D29/20
Inventor 陈潜
Owner HANGZHOU ALKALI PUMP CO LTD
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