Contra-rotating multiphase pump

By setting up a power unit and a tooth-shaped sealing structure in the rotary mixing pump, combined with the liquid phase material supplement of the collection tank, the problems of equipment stability and segment flow in the multiphase boosting technology of offshore platform are solved, and more efficient and reliable multiphase fluid boosting is achieved.

CN119686992AInactive Publication Date: 2025-03-25BOSHAN WATER PUMP MFG FACTORY
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Patent Information

Application Number
CN202510120378.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-25
Publication Date
2025-03-25
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing offshore platform multi-phase boosting technology is difficult to maintain the stability and efficiency of boosting equipment under extreme operating conditions, and is prone to cavitation and surge problems, and the plug flow leads to damage to pipelines and equipment.

Method used

A counter-rotating mixing pump is designed, the power unit is arranged on the low-pressure inlet side of the pump housing, and the second power unit is a hollow structure. It can avoid the formation of segment plug flow through the toothed sealing structure and the supplementary liquid material of the collection tank, and realize the cooling and lubrication of the bearing through the bearing lubrication pipeline.

Benefits of technology

It extends the service life of the power unit, avoids sealing problems and equipment damage, improves the boost efficiency, stability and reliability of multi-phase fluids, and avoids damage to pipelines and equipment caused by segment flow.

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Abstract

The invention belongs to the technical field of pumps, and particularly relates to a contra-rotating multiphase pump which comprises a pump shell, a first impeller, a second impeller, a first power unit and a second power unit, the first impeller is arranged on the inner side of the second impeller, the pump shell is arranged on the outer side of the second impeller, and a low-pressure inlet and a high-pressure outlet are formed in the pump shell; a first impeller and a second impeller are arranged in the pump shell, a plurality of blades are arranged on the first impeller and the second impeller, the first power unit is connected with the first impeller, and the second power unit is connected with the second impeller. An output shaft of the first power unit penetrates through the second power unit and then is connected with the first impeller, or the first impeller penetrates through the second power unit and then is connected with the first power unit. The power units are all arranged on one side of the low-pressure inlet, the pressure of multiphase materials on one side of the low-pressure inlet end is small, the influence of the multiphase materials on sealing of the joints of the power units is small, and the service life of the power units is prolonged.
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