Intelligent reversing control system, intelligent reversing control method, intelligent radiant tube heat regeneration device and intelligent radiant tube heat regeneration method

Abstract

The invention relates to an intelligent reversing control system, an intelligent reversing control method, an intelligent radiant tube heat regeneration device and an intelligent radiant tube heat regeneration method. The intelligent reversing control system comprises a flue gas temperature sensor, an exhausted gas temperature sensor, a fuel gas reversing valve, an air reversing valve and a master control module, wherein the fuel gas reversing valve is arranged on a fuel gas passage, the air reversing valve is arranged on an air passage and is provided with an outlet port, the flue gas temperature sensor is arranged in a radiant tube and is used for detecting a temperature of flue gas in the radiant tube and sending temperature signals to the master control module, the exhausted gas temperature sensor is arranged at the outlet port position of the air reversing valve and is used for detecting a temperature of exhausted flue gas and sending temperature signals to the mater control module, and the master control module is used for receiving the temperature signals from the flue gas temperature sensor and the exhausted gas temperature sensor, computing and analyzing the signals and controlling the air reversing valve and the flue gas reversing valve to reverse. The intelligent reversing control system is capable of achieving intelligent reversing of the radiant tube in regenerative combustion and improving control precision of the regenerative gas-fired radiant tube, and workload adjustment is facilitated.

Description

technical field [0001] The invention relates to the field of intelligent heat storage control, in particular to an intelligent commutation control system of a regenerative radiant tube and a method thereof, as well as a radiant tube intelligent heat storage device with the intelligent commutation system and a method thereof. Background technique [0002] Regenerative combustion technology uses refractory material as a heat storage carrier, which is alternately heated by flue gas, and then heats the air or gas with the heat stored in the regenerative body, so that the air and gas can be preheated at high temperature to achieve the purpose of waste heat recovery. The heat accumulator is usually made of special ceramic materials, in the shape of a honeycomb body, with a large heat exchange area, good heat transfer, heat resistance, and high thermal efficiency. Since the regenerators are heated and released periodically, in order to ensure the continuity of combustion, the regen...

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Problems solved by technology

However, this technology only transfers part of the data acquisition function and control function of the PLC to the single-chip microcomputer of the controller, and does not improve the burner combustion and control technology, and cannot automatically realize temperature control and power regulation.

[0007] Another intelligent burner controller in the prior art, the device is composed of a programmable controller, a button board, a flame detection board, and some multi-core aviation plugs, but it mainly judges the combustion status by detecting the flame signal, and its function is relatively simple , lack of combustion process regulation function

In addition, this device is only suitable for conventional burners. Generally, it can only realize the functions of combustion status monitoring and automatic ignition after combustion interruption. It lacks necessary functions such as heating power adjustment and over-temperature protection during the combustion process, and cannot be applied to periodic reversing and pulse burners. Combustion characteristics on regenerative radiant tube burners

[0008] It can be seen from the above that in the prior art, most people focus on the structural optimization of the regenerative radiant tube and the simple control of the burner, and most of them are to detect the combustion of the burner, and do not control the combustion and heat storage of the radiant tube. Technology is improved, temperature control and power regulation cannot be realized

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