Durable mud pump design implementation method for prolonging the service life

Abstract

The invention provides a durable mud pump design implementation method for prolonging the service life and belongs to the technical field of designs of mud pumps. Based on the original design of the mud pump, stress concentration positions and seriously abraded positions are reasonably thickened to prolong the service life of the mug pump; the thickening mainly comprises thickening of a spiral casing and thickening of local regions of an impeller, wherein the thickening of the spiral casing is mainly implemented by thickening a seriously abraded baffle tongue and spiral casing shaft sections;according to the serious degree of abrasion of the baffle tongue and each shaft section, the wall thickness of each section is regulated; the impeller is thickened on a force absorbing surface of eachblade; a position, close to inlet and outlet sides, of the force absorbing surface of each blade is mainly thickened; the region is also an abrasion and stress concentration region. The method provided by the invention makes a designed mud pump have a relatively long service life by changing the wall thickness and can prevent the phenomenon that the mud pump fails to work normally because of wearthrough or breakage of local positions.

Description

technical field [0001] The invention belongs to the design field of mud pumps, and relates to a design and realization method of a durable mud pump with improved service life, and local thickening is carried out aiming at the failure characteristics of each component in the mud pump. Background technique [0002] The dredging pump is a key part of the dredging project. The dredged material of the dredged pump has complex and diverse components, and some of them contain large-sized gravel or sharp rocks. The mud pump is severely damaged; some are clay mixed with sand or clay mixed with gravel, which is easy to wear the mud pump quickly; some are medium and coarse sand, which is easy to cause the mud pump to wear. According to the flow of sand in the pump, it can be found that the wear in the mud pump is non-uniform and will be extremely serious in local areas. At the same time, due to the uneven distribution of internal pressure when the mud pump is working, the stress on ea...

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Problems solved by technology

[0003] At present, the design method of the same wall thickness is adopted for the design of the mud pump. When the failure and damage occur in some areas of the mud pump, although most of the other areas can still meet the use requirements, only the failed parts of the mud pump can be replaced, especially the impeller. Or when the volute fails and is damaged, it will be extremely complicated to replace these parts, which will lead to great economic losses and prolong the construction period

At present, extending the service life by using better materials and increasing the overall wall thickness of the dredge pump is the main method, but this method has low economic benefit and high cost

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