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Centrifugal pump with counter-rotating type inducer

An inducer and centrifugal pump technology, applied in the field of centrifugal pumps, can solve problems such as optimization design restrictions, achieve the effects of improving cavitation performance, optimizing pre-rotation effect, and convenient installation

Active Publication Date: 2018-12-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For traditional inducers, the optimal design is limited by the given rotational speed

Method used

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  • Centrifugal pump with counter-rotating type inducer
  • Centrifugal pump with counter-rotating type inducer
  • Centrifugal pump with counter-rotating type inducer

Examples

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0028] figure 1 , figure 2 Respectively, the present invention relates to a centrifugal pump with a counter-rotating inducer and the structural diagram of the inducer assembly, image 3 It is a partial enlarged view of the inducer assembly, including trumpet tube 1, inducer assembly 2, mouth ring 3, pump body 4, impeller 5, pump cover 6, pump shaft 7, shaft sleeve 8, impeller nut 9, and locking retaining ring 10. Mechanical seal 11, motor 12, inducer 201, bearing A 202, bearing B 203, shaft end nut 204, gear A 205, gear B 206, snap ring 207;

[0029] The trumpet tube 1 is provided with a front guide vane 1a and a water guide cone 1b,

[0030] One end of the pump shaft 7 is connected to the motor through a coupling, and the other end is equipped with an inducer assembl...

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Abstract

The invention relates to a centrifugal pump with a counter-rotating type inducer. The centrifugal pump comprises a horn-shaped tube, an inducer assembly, a pump body, an impeller, a pump cover, a pumpshaft, a motor and the like. When the centrifugal pump is started, the inducer realizes rotation with reverse rotation directions under driving of a gear group, and the different rotation speeds canbe realized according to different transmission ratios of the gear group, so that the design of the inducer is further optimized, and the cavitation performances of the centrifugal pump are improved.The gear group adopts involute cylindrical gears, so that efficient transmission can be realized, and too great noises are not generated. The centrifugal pump with counter-rotating type inducer disclosed by the invention has the advantages of being simple to operate, convenient to mount, safe and reliable, and the like.

Description

technical field [0001] The invention relates to a centrifugal pump, in particular to a centrifugal pump with counter-rotating induction wheels. Background technique [0002] The inducer is an axial-flow impeller. Compared with the centrifugal pump impeller, it has stronger anti-cavitation performance, and can work in a certain degree of cavitation state without seriously affecting the performance. When the inducer is used in conjunction with the centrifugal impeller, the lift generated by the inducer can reduce the cavitation margin of the pump and improve the anti-cavitation performance of the pump. Usually, the inducer is designed according to the light-loaded axial-flow impeller, and a larger cascade density (the ratio of airfoil chord length to pitch), a smaller inlet angle of attack, and a larger Inlet flow area, etc. For traditional inducers, the optimum design is limited by the given rotational speed. Contents of the invention [0003] Aiming at the problems exis...

Claims

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Application Information

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IPC IPC(8): F04D1/00F04D13/06F04D29/22F04D29/046H02K7/116H02K7/14
CPCF04D1/00F04D13/06F04D29/046F04D29/225H02K7/116H02K7/14
Inventor 朱荣生安策王秀礼卢永刚陈靖
Owner JIANGSU UNIV
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