Energy-saving and optimization control method for steam drain fan of continuous casting machine based on secondary cooling water flow

Abstract

The invention discloses an energy-saving and optimization control method for a steam drain fan of a continuous casting machine based on secondary cooling water flow, belongs to an electrical and relevant technology, and aims to research and develop an energy-saving and optimization control method for a steam drain fan adapted to the working condition of a continuous casting machine so as to develop the energy saving potential of the steam drain fan as much as possible. The method is characterized in that a dynamic optimization control mathematical model of the secondary cooling steam drain fan of the continuous casting machine is constructed according to the quantity of steam generated according to the water flow of different casting steel types, cooling systems and casting blank sections at various throwing speeds on the basis of the secondary cooling water flow of the continuous casting machine; a dynamic control system of a secondary cooling steam drain fan of an energy-saving continuous casting machine is formed by utilizing a frequency variation and speed regulation technology and is used for carrying out dynamic optimization and energy-saving control on the steam drain fan, thereby not only meeting the requirements of a process on the air quantity of drained steam, but also sufficiently saving electricity energy. The invention can be widely applied to controlling the steam drain fans of various newly manufactured or modified continuous casting machines to achieve a favorable energy-saving effect and economic benefit.

Description

technical field [0001] The invention belongs to electrical and related technologies. Background technique [0002] The secondary cooling steam exhaust fan of the continuous casting machine is one of the important equipment in the continuous casting process equipment, and it is also one of the equipment with the largest power and the most power consumption among the online single equipment of the continuous casting machine. About 1 / 6 of the calculation load of the online equipment of the casting machine, if effective energy-saving methods can be adopted to achieve a significant energy-saving effect, the comprehensive energy consumption index of the continuous casting machine will be significantly improved, and good economic benefits will be obtained . [0003] The current control method of the secondary cooling steam discharge fan of the continuous casting machine is mostly to adjust the air volume by controlling the opening of the fan outlet baffle, and a small number of sy...

AI Technical Summary

Problems solved by technology

The former is a conventional fan control method, the outlet air volume of the fan can be adjusted within a certain range, but the motor does not work in an energy-saving mode; although the latter is equipped with a frequency converter, it has not yet been used with the continuous casting machine The system controlled by the optimized control model adapted to the working conditions has uncertainty in speed adjustment and cannot be practically applied, so its energy-saving features have not been and cannot be brought into play. This type of system equipped with a frequency converter is only used In order to improve the starting performance of the motor, after the starting process is completed, the system has been working at a constant speed

[0004] There is no published literature on the optimal control and energy-saving technology of the secondary cooling steam exhaust fan of the continuous casting machine, and it is still in the blank stage

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