Adjustable Rod Type Oxygen Lance Quick Changer

Abstract

The invention relates to a self-aligning rod-type oxygen lance quick replacing device. The self-aligning rod-type oxygen lance quick replacing device comprises a trolley platform for an oxygen lance, wherein the trolley platform for the oxygen lance carries an oxygen lance, an oxygen lance fixing device and three oxygen lance locating devices, and jacking pipes in the three oxygen lance locating devices are respectively movably plugged in three jacks of a connecting plate in the oxygen lance fixing device; during dismounting, the oxygen lance can be detached and lifted away only by removing quick-detach nuts in the oxygen lance fixing device; during mounting, a metal hose in each oxygen lance locating device can horizontally move on a horseshoe sliding seat, so that assembly deviation among three elbows of the oxygen lance can be made up, adjusting is convenient, the jacking pipes can be conveniently butted with the jacks, and communication between the three jacking pipes and the three elbow pipes of the oxygen lance is completed; during aligning, a matching surface of a connecting pipe of each oxygen lance locating device and one corresponding jacking pipe is a cambered surface, so that the perpendicularity of the oxygen lance can be easily controlled, and adjusting is convenient; after aligning, the quick-detach nuts are mounted again. The whole process can be completed in only dozens of minutes, and time and manpower are saved.

Description

technical field [0001] The invention relates to the field of connection devices for oxygen lances in the steelmaking industry, in particular to a quick changer for an aligning rod type oxygen lance. Background technique [0002] The oxygen lance device is the key equipment for oxygen top-blown converter steelmaking. The oxygen lance is also called the oxygen blowing pipe. It is made of three layers of steel pipes. The innermost layer of steel pipe is the oxygen channel. Oxygen nozzle, oxygen is ejected from the nozzle of the oxygen nozzle, the second and third layers of steel pipes are the inlet and outlet channels of the oxygen lance cooling water, and the inlet and outlet pipes of the oxygen lance cooling water are also welded together with the oxygen nozzle. The inlet and outlet pipes of the lance cooling water form a closed-circuit circulation channel in the oxygen nozzle, which is used to cool the oxygen lance body and the oxygen lance nozzle; Connected by wire ropes, ...

AI Technical Summary

Problems solved by technology

[0003] During the production of oxygen top-blown converter steelmaking, the oxygen lance is inserted into the molten steel of the converter, and through the oxidation reaction of oxygen, it plays the role of carbon removal and temperature rise. Water leakage, slag sticking, bending deformation and other reasons cannot be used normally, and the oxygen lance needs to be replaced in time; to replace the oxygen lance, it is necessary to disassemble and install the high-strength bolts on the metal hose flange connecting the oxygen and cooling water. The relative position between the two elbow flanges will produce different dimensional deviations. Although this deviation is not large, it puts forward very high requirements for the assembly technology of the three sets of bolts. When tightening the bolts, the nuts cannot be screwed to the bottom at one time. The oxygen lance must be fastened while deploying it in pairs diagonally and step by step, and the oxygen lance must be centered during the installation process, that is, to ensure the verticality of the oxygen lance, so this work is very time-consuming , usually takes about six hours, not only time-consuming and labor-intensive, but also cumbersome to operate, once improper operation will produce oxygen or cooling water leakage, resulting in major equipment accidents or personal injury accidents

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