Novel corrosion-resistant and wear-resistant metal ceramic slurry pump cylinder sleeve

Abstract

The invention discloses a novel corrosion-resistant and wear-resistant metal ceramic slurry pump cylinder sleeve which comprises an outer cylinder sleeve body, an inner cylinder sleeve body and a metal ceramic coating. The outer cylinder sleeve body and the inner cylinder sleeve body are both cylindrical, and the metal ceramic coating is arranged on the inner side wall of the inner cylinder sleevebody. A plurality of limiting blocks are evenly arranged on the outer side wall of the inner cylinder sleeve body in the circumferential direction, and a plurality of inverted-T-shaped limiting grooves matched with the limiting blocks are formed in the outer cylinder sleeve body. Each inverted-T-shaped limiting groove comprises a sliding rail arranged in the axial direction of the outer cylindersleeve body and a positioning cavity, wherein the sliding rail extends downwards from the top of the outer cylinder sleeve body, and the positioning cavity is perpendicularly formed in the bottom of the sliding rail. The limiting blocks can slide up and down along the sliding rails and enter the positioning cavities for clamped fixation, and the vertical distance from the positioning cavities to the top of the outer cylinder sleeve body is equal to the vertical distance from the limiting blocks to the top of the inner cylinder sleeve body. The metal ceramic coating is composed of a metal transition layer and a ceramic surface layer. The slurry pump cylinder sleeve has excellent corrosion resistance and wear resistance, the service life is remarkably prolonged compared with that of an existing cylinder sleeve, and the slurry pump cylinder sleeve can be repeatedly used.

Description

technical field [0001] The invention relates to the technical field of high-performance cermet materials, in particular to a novel corrosion-resistant and wear-resistant cermet mud pump cylinder liner. Background technique [0002] In the production of the oil industry, the mud pump is the "heart" of the oil drilling and geological exploration workbench. The important components are used to store mud, withstand mud pressure, and make the reciprocating piston reciprocate in the cylinder liner to complete the function of absorbing and discharging mud. [0003] The currently used mud pump cylinder liners are mainly bimetallic cylinder liners and ceramic cylinder liners. Poor performance and wear resistance, the harsh working environment makes the service life of the bimetallic cylinder liner extremely short, while the ceramic cylinder liner is easy to fall off or shatter under high pressure, which cannot achieve the desired effect. In addition, the outer cylinder liner and in...

AI Technical Summary

Problems solved by technology

[0003] The currently used mud pump cylinder liners are mainly bimetallic cylinder liners and ceramic cylinder liners. Poor performance and wear resistance, the harsh working environment makes the service life of the bimetallic cylinder liner extremely short, while the ceramic cylinder liner is easy to fall off or shatter under high pressure, which cannot achieve the desired effect

In addition, the outer cylinder liner and inner cylinder liner of the cylinder liner are generally assembled by interference fit, which is prone to problems such as too tight fit and broken inner liner, or too loose fit and easy fall off of the inner liner. The outer cylinder liner is generally not easy to damage. Once the inner cylinder liner is worn or punctured to a certain extent, it needs to be replaced. The existing assembly method of the inner cylinder liner and the outer cylinder liner makes it difficult to take out the inner cylinder liner. Both the inner cylinder liner and the outer cylinder liner need to be replaced, and the maintenance cost is high

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