Automatic temperature measuring and sampling method for door of steelmaking converter

Abstract

The invention provides an automatic temperature measuring and sampling method for the door of a steelmaking converter. According to the method, a walking mechanism which moves on a rail on the groundin front of the door of the converter, a suspension type before-the-converter fire blocking door and a temperature measuring and sampling robot, wherein the suspension type before-the-converter fire blocking door and the temperature measuring and sampling robot are jointly arranged on the walking mechanism; at a standby position, the steel slag splashing protection plate of the temperature measuring and sampling robot and the suspension type before-the-converter fire blocking door form a complete converter slag splashing and high-temperature radiation protection baffle; the robot collects thereal-time image information of the mouth of the converter and provides the information for an operator in maintenance converter; and the robot collects molten steel and slag block position informationand can independently decide and control the stretching distance and insertion position of a temperature measuring and sampling probe. According to the method of the invention, the robot is used forreplacing manual operation to perform temperature measurement and sampling; and therefore, the operator can be protected from being scalded by splashing steel slag, and an operation success rate is remarkably improved. The method is an advanced technology with a bright application prospect.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to an automatic temperature measurement and sampling method for a furnace door of a steelmaking converter. Background technique [0002] Converter steelmaking is an advanced technology for large-scale production of high-quality and cheap molten steel. The steelmaking process of most converters is divided into five steps: a) Add steelmaking materials such as molten iron, scrap steel, and pig iron into the converter; b) Control the blowing state of the converter by controlling the height and flow of the oxygen lance. During the process, slag-forming materials are added through the bunker on the furnace roof and slag is melted; c) the end point is predicted, and the temperature is sampled and measured; d) deoxidation and alloying are performed, and the molten steel is tapped; e) slag is splashed to protect the furnace. At present, there are two forms of temperature meas...

AI Technical Summary

Problems solved by technology

The carbon-oxygen reaction is severe in the middle and late stages of blowing. When the temperature is too high, the FeO in the slag decreases, and 3CaO·SiO with a high melting point is easily formed. 2 etc., making the slag return to dryness, and some solid particles such as CaO and MgO and large ion group substances are precipitated.

Therefore, the existing converter production process is still unavoidable manual temperature measurement and sampling

[0004] CN108444616A and CN108359767A disclosed "a kind of automatic temperature measurement and sampling system in front of molten steel of steelmaking converter" and "automatic temperature measurement and / or sampling method in front of molten steel in steelmaking converter", with very complex devices and very The cumbersome method realizes the automatic temperature measurement and / or sampling of the molten steel in the steelmaking converter, but there are many unreasonable points. For example, from the order of temperature measurement and sampling to the insertion of the probe into the molten steel, the device needs to perform 7 actions to complete. The configured robot does not perform the operation of temperature measurement and sampling, and the function of the machine vision system is only to determine the deformation of the temperature measurement and sampling gun head at the casing disassembly position

Including CN204903227U automatic temperature measurement and sampling device for molten steel, CN206599583U automatic temperature measurement and sampling device for steelmaking furnace, CN104697813 B automatic temperature measurement and sampling device for steelmaking furnace, CN202830074U inclined auxiliary gun drive device, CN202793645U automatic temperature measurement and sampling for molten steel during steelmaking device, CN206052067U converter steelmaking end point parameter detection and liquid steel sampling probe automatic delivery system and telescopic tube assembly and other disclosed technologies, or fixedly installed on a fixed bracket, or with a complicated rotary mechanism, etc., but all have single functions The automatic device cannot select and change the position of the measuring point in real time to avoid agglomeration in the molten steel, so the success rate of automatic temperature measurement and sampling is very low

[0005] However, the existing temperature measurement and sampling robot uses a multi-joint six-degree-of-freedom robotic arm, which has a high failure rate and insufficient reachable space, and is mainly used in production places such as electric furnaces or refining furnaces. A new method of temperature sampling and an intelligent multifunctional temperature measurement and sampling robot can overcome the above-mentioned deficiencies

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