Device for cleaning inner walls of pipelines with multiple inner diameters

Abstract

The invention provides a device for cleaning the inner walls of pipelines with multiple inner diameters. The device comprises a motion control unit and a laser transmission scanning unit. The motion control unit comprises a movable main unit platform, a vertical fixed support rod, a horizontal support rod, a first servo motor and a first ball screw. The laser transmission scanning unit comprises an optical fiber laser, a transmission optical fiber, a laser head, a support, a concave lens, a convex lens, a second servo motor, a second ball screw, a lead screw slider, a lens bracket, a reflector, a reflector bracket, a scanning galvanometer, a cone reflector, a quartz cover, a support plate and an adjustable knob. According to the device, a novel pipeline inner surface laser cleaning technology based on a front focusing galvanometer system is adopted, a laser focal plane is converted into an annular surface along the inner side of a pipeline in combination with the cone reflector, three-dimensional curved surface machining is ingeniously decomposed into two-dimensional scanning, the whole machining process is simplified, and the bottleneck problem that it is difficult to apply a traditional laser cleaning technology to pipeline inner surface cleaning is solved.

Description

technical field [0001] The invention belongs to the technical field of laser processing, and in particular relates to a device for cleaning the inner wall of a multi-size inner diameter pipeline for removing coatings, dirt, oxide layers and other harmful substances on the inner wall of the pipeline. Background technique [0002] Pipeline inner surface cleaning technology is widely used in today's life or industrial production equipment maintenance and other fields. For example, the cleaning of the inner surface of urban water supply and heating equipment pipelines, as well as the cleaning of modern industrial oil pipelines and chemical reaction pipelines, even the cleaning of adhesive residues in the inner bore of gun barrels, the cleaning of radiation in nuclear reaction circulation pipelines, etc. Due to its advantages of high cleaning quality, no consumables, high efficiency and no polluting waste water, laser technology has gradually replaced traditional pipeline inner w...

AI Technical Summary

Problems solved by technology

[0003] The common feature of laser cleaning engineering application cases is that the object to be cleaned has an open surface that is easy to perform laser filling and scanning. For the inner surface of the pipe, limited by its diameter and the shape of the non-open rotary inner wall, the general laser It is difficult for the cleaning processing head to penetrate into the pipeline due to the large size of the complex beam scanning motion mechanism

The existing laser cleaning technology for the inner wall of the pipeline generally adopts the free-form surface projection laser splicing processing scheme or the pipeline rotation combined with the galvanometer scanning processing scheme. The splicing and cleaning process is time-consuming and requires high splicing accuracy, which increases the processing cost; as for the latter solution, it completely relies on the servo motor to drive the rotation of the pipeline to clean the inner wall of the tube. Due to the limitation of the rotation speed of the pipeline, the The processing efficiency of the scheme is low, and the purpose of efficiently cleaning the inner wall cannot be achieved

Moreover, some pipelines are not easy to disassemble, and the scheme is limited by certain application objects

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