Impeller and volute chamber guide device in double-suction centrifugal pump

A technology of centrifugal pump impeller and diversion device, which is applied to components, pumps, and pump elements of pumping devices for elastic fluids, can solve problems such as insufficient thoroughness, and achieves reduction of secondary flow and wake flow. effect of phenomenon

Active Publication Date: 2015-07-15
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current domestic research on double-suction pumps is not thorough enough, and the average technical level of efficiency indicators of domestically produced double-suction pumps is 2.5% lower than that of foreign countries.

Method used

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  • Impeller and volute chamber guide device in double-suction centrifugal pump
  • Impeller and volute chamber guide device in double-suction centrifugal pump

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the purpose and effect of the present invention will become more obvious.

[0013] Such as figure 1 with figure 2 As shown, the double-suction centrifugal pump impeller vortex deflector device in this embodiment includes: centrifugal pump volute 1, blade working surface 2, blade back 3, impeller deflector 4, vortex chamber deflector 5, front cover Plate 6, rear cover plate 7 and impeller rotating shaft 8. Among them, the impeller front cover plate 6 and the rear cover plate 7 fix 3 to 6 impeller guide plates 4 between the adjacent blade working surface 2 and the blade back surface 3, so as to guide the liquid flow just entering the impeller, and the impeller guide flow The plate 4 is welded between the front cover 6 and the rear cover 7, the angle between the tail of the deflector and the outer diameter of the impeller is equal to the blade outlet ...

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PUM

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Abstract

The invention relates to an impeller and volute chamber guide device in a double-suction centrifugal pump. The impeller and volute chamber guide device comprises a centrifugal pump volute casing, blades, impeller guide plates, volute chamber guide plates, a front cover plate, a rear cover plate and an impeller rotary shaft. The impeller front cover plate and the rear cover plate are fixed with the impeller guide plates between the adjacent blade working surfaces and the blade back surfaces so as to guide liquid flow which just enters the impeller; the impeller guide plates are welded between the front cover plate and the rear cover plate; an included angle between each of the tail parts of the guide plates and the outer diameter of the impeller is equal to the blade outlet angle. The volute chamber guide plates are distributed on the inner wall of the centrifugal pump volute casting at different angles along an Archimedes spiral line. According to the impeller and volute chamber guide device disclosed by the invention, the pump operation efficiency can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of fluid machinery and relates to a method for improving the performance of the centrifugal pump by adding an impeller and a vortex deflector device to the double-suction centrifugal pump. Background technique [0002] The water pump is a general mechanical product with a large quantity and a wide range. Double-suction centrifugal pumps are one of the most numerous and widely used pump products. It is widely used in various fields of national economic construction due to its large single-machine flow rate and convenient use and maintenance. But at present, domestic research on double-suction pumps is not thorough enough, and the average technical level of efficiency indicators of domestically produced double-suction pumps is 2.5% lower than that of foreign countries. Carrying out basic research on the internal flow mechanism of double-suction pumps and improving the operating efficiency of double-suction p...

Claims

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Application Information

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IPC IPC(8): F04D29/22F04D29/44F04D29/66
Inventor 凃程旭包福兵狄辉彬李楠
Owner CHINA JILIANG UNIV
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