A device for cleaning the inner wall of multi-size inner-diameter pipelines

Abstract

The invention provides a device for cleaning the inner wall of pipelines with multiple sizes of internal diameters, which includes a motion control unit and a laser transmission scanning unit; the motion control unit includes a movable host platform, a vertical fixed pole, a horizontal pole, a first servo Motor and first ball screw; the laser transmission scanning unit includes fiber laser, transmission fiber, laser head, bracket, concave lens, convex lens, second servo motor, second ball screw, screw slider, mirror frame, reflection mirror, mirror holder, scanning galvanometer, conical mirror, quartz cover, support plate and adjustable knob. The invention adopts a novel new technology of laser cleaning the inner surface of the pipeline based on the front-focus galvanometer system, combines the conical mirror to convert the laser focal plane into an annular surface along the inner side of the pipeline, and skillfully decomposes the processing of the three-dimensional curved surface into two-dimensional scanning. The entire processing process is simplified, which solves the bottleneck problem that traditional laser cleaning technology is difficult to apply to the cleaning of the inner surface of the pipeline.

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 coating, dirt, oxide layer and other harmful substances on the inner wall of the pipeline. Background technique [0002] The pipe 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, chemical reaction pipelines, and even the cleaning of bonding residues in gun barrels, and the cleaning of radiation in nuclear reaction circulation pipelines. Due to its high cleaning quality, no consumables, high efficiency and no pollution of waste water, laser technology has gradually replaced the traditional cleaning technology of pipeline inner wall s...

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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