AOD converter side blowing gun pipeline system flow control method

Abstract

The present invention discloses an AOD converter side blowing gun pipeline system flow control method, which comprises the following steps: 1, arranging a total pipeline pressure transmitter on a total pipeline, and measuring the actual total pipeline pressure P total in the total pipeline; and 2, comparing the actual pressure P branch of one branch pipeline to preset pressure P0 of the of branch pipeline, wherein the condition comprises that: a, flow control regulation is performed if the P branch is less than or equal to 1.2 P0, and b, an opening degree of a flow regulation valve is regulated according to a preset pressure regulation value if the P branch is more than 1.2 P0, and the flow control regulation in the condition a is performed after achieving the preset time. According to the AOD converter side blowing gun pipeline system flow control method, the pressure of the total pipeline is adopted to carry out temperature and pressure compensation on the branch pipeline air flow, and the two control manners such as flow regulation and pressure regulation are adopted, such that the smooth air pipeline is easily achieved, and normal operation of the AOD converter side blowing gun pipeline system can be ensured.

Description

technical field [0001] The invention relates to the regulation and control of gas flow, more specifically, a method for controlling the flow of an AOD converter side blowing gun piping system. Background technique [0002] AOD (Argon Oxygen Decarburization) converter side blowing gun has side blowing stirring and oxygen blowing functions. In the application, the side-blown gas is multiplexed to the furnace wall. The protective gas includes nitrogen and argon, which can be switched by the shut-off valve on the main pipe. Such as figure 1 Shown is a schematic diagram of the control principle of an AOD converter side blow gun pipeline system including seven pipelines. The protective gas of each sub-pipeline is comprehensively controlled by pressure transmitter PT (such as orifice plate differential pressure transmitter, etc.), temperature sensor TE (such as thermal resistance, etc.), and flow control valve CV. Nitrogen and argon are respectively cut off After the valve SV, ...

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to provide an innovative flow control method of the AOD converter side blowing gun pipeline system to solve the above-mentioned problems existing in the flow control of the existing AOD converter side blowing gun, thereby safely and accurately according to the actual situation, Control and adjust the gas flow of each pipeline in the side blow gun

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