Split type deflector

A director and split-type technology, applied in non-variable-capacity pumps, radial flow pumps, non-displacement pumps, etc., can solve the problems of greatly increased manufacturing and operating costs, uneconomical, complicated processes, etc., to ensure Effects of dynamic balance accuracy and runout inspection accuracy, reduced manufacturing and operating costs, and simplified adjustment procedures

Active Publication Date: 2011-09-07
SHANGHAI CSIC SHIP PROPULSION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The installation, disassembly, adjustment, inspection and other operations are complicated and costly - for example, during installation, the impeller, guide and partition must be installed step by step; when dismounting, the impeller guide and partition must be removed step by step; adjustment When checking the rotor parts, the guide and the partition must be disassembled step by step after the pump body is disassembled; the above operation is not only a complicated process, a waste of time and manpower, but also It also greatly increases the manufacturing and operating costs of the pump, which is extremely uneconomical;
[0004] 2. It has a negative impact on the operation performance of the pump - after the rotor components have completed the dynamic balance test and runout inspection, they must be disassembled and reinstalled, so the balance accuracy and runout detection accuracy cannot be guaranteed, and there will be failures or major injuries during the operation of the pump Hidden dangers

Method used

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Examples

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Embodiment Construction

[0017] refer to figure 1 , shows a schematic diagram of a longitudinal section of a three-stage water pump, that is, a section view along the split plane of the split pump body and pump cover. The device assembly 4, the diaphragm assembly 5, the circumferential positioning assembly 7 (the pump cover 6 is cut off from the figure), the pump body 1, the impeller assembly 2, the sealing ring 3, and the pump cover 6 are all the same or similar to the prior art, and the sealing The ring can also adopt a split structure. guide assembly 4, figure 1 The number of guider assemblies 4 shown corresponds to 3 pieces corresponding to the impeller assembly 2, and each guider assembly 4 has the same structure, and each guider assembly 4 is composed of an upper guider body 41 and a lower guider body 42 and is divided into two parts. Type structure, the hydrodynamic performance of the two-piece guide assembly 4 is the same as that of the existing integral guide; wherein:

[0018] Upper guide...

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PUM

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Abstract

A split type deflector mainly solves the technical problems in simplification of the operations of assembly, disassembly, adjustment, check, etc. The present invention adopts the technical proposal that each deflecting assembly comprises an upper deflecting component and a lower deflecting component which are split; each baffle assembly comprises an upper baffle and a lower baffle which are split. The split type deflector is suitable for the pump cover of various multi-stage pumps and water pumps of split type pump bodies.

Description

Technical field: [0001] The invention relates to a radial flow pump, in particular to an assembly of a multistage centrifugal pump. Background technique: [0002] Existing water pumps, especially large-scale water pumps, have their split structures widely used in fields such as chemical industry, metallurgy, power stations, petroleum, and ships. The main feature of the existing split structures is that the pump body (volute ) adopts a split type, but its guide and partition are an integral structure without split, that is, the parts of the multi-stage water pump include impellers, guides and partitions with corresponding stages, and the impellers, guides and partitions of each stage The plates are set on the main shaft of the pump step by step. Compared with the early integral pump volute, the above structure has been greatly improved in terms of processing, installation, maintenance, etc., and with the advancement of science and technology, there have been many improvements...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42F04D29/44F04D29/62F04D1/06
Inventor 孙卫平李兵杜云水李长江顾海飞
Owner SHANGHAI CSIC SHIP PROPULSION EQUIP CO LTD
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