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Radially split double-shell multiple-stage centrifugal pump

A centrifugal pump, double-shell technology, applied in radial flow pumps, components of pumping devices for elastic fluids, pumps, etc., can solve the problem of inter-stage leakage, difficult maintenance, and complex shape of multi-stage centrifugal pumps. and other problems, to achieve the effect of high reliability, clean appearance and automatic balance of axial force

Inactive Publication Date: 2016-06-22
SHANGHAI KAIQUAN PUMP IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Furthermore, some single-casing radially split multistage centrifugal pumps also need to connect "reversing flow passages" outside the casing to realize the symmetrical arrangement of the impellers. Potential for leaks between segments

Method used

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  • Radially split double-shell multiple-stage centrifugal pump

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Embodiment Construction

[0019] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0020] see figure 1 , a radially split double casing multistage centrifugal pump provided by the present invention mainly includes a cylinder 100, and an outlet pipe 110 and an inlet pipe 120 communicating with the pump cylinder 100 are arranged on the outer surface of the pump cylinder 100 , a pump cover 140 is provided on one side of the cylinder body 100 .

[0021] The inlet pipe 120 can input the external medium into the pump barrel 100 , and the outlet pipe 110 is used to output the working medium in the pump barrel 100 .

[0022] Inside the pump cylinder 100, there is a core package that can be loaded and extracted as a whole. The core package adopts a radial split structure, and it can be loaded or extracted from one end of the pump cyli...

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Abstract

The invention discloses a radially split double-shell multiple-stage centrifugal pump. The centrifugal pump comprises a pump barrel, a pump cover, a core cladding, a balance pipe and a bearing part, wherein an outlet pipe and an inlet pipe are arranged on the pump barrel; the core cladding comprises a suction section, a middle section, an intermediate section, a radial guide blade, a first stage impeller, a secondary stage impeller and an axis, the core cladding is radially split and can be put in or pumped out from one end of the pump as a whole; the first stage impeller is a double-suction impeller; the secondary stage impeller is a single-suction impeller. The pump in the structure disclosed by the invention is compact, convenient to repair, good in cavitation property and high in reliability, the axial force is automatic balancing.

Description

technical field [0001] The invention relates to a multistage pump, in particular to a radially split double casing multistage centrifugal pump. Background technique [0002] In multi-stage pumps, the double-suction first-stage impeller and the symmetrical arrangement of the secondary impeller can improve the cavitation performance of the pump and automatically balance the axial force of the rotor. [0003] At present, the axially split multistage centrifugal pump has realized the characteristic technology of double-suction first-stage impeller and symmetrical arrangement of secondary impeller, but the casing of this type of pump has disadvantages such as complex molding, easy to produce defects, difficult processing, and high cost. . [0004] In addition, radially split multistage centrifugal pumps usually need to install inducers to improve pump cavitation performance. [0005] Furthermore, some single-casing radially split multistage centrifugal pumps also need to connec...

Claims

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Application Information

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IPC IPC(8): F04D1/06F04D29/00F04D29/22F04D29/66
Inventor 王延合汤勇芦洪钟许昆仑卢署林彭耀
Owner SHANGHAI KAIQUAN PUMP IND GROUP
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