Fuzzy computer intelligent fuzzy control method for energy saving in furnace chamber temperature of gas furnace
A fuzzy control algorithm and fuzzy control technology, applied in the direction of furnace control devices, furnaces, furnace components, etc., can solve problems such as heat loss, insufficient heat exchange, unfavorable thermal efficiency of gas furnaces, etc., to prolong heat exchange time and reduce unit Consumption, the effect of improving thermal efficiency
Active Publication Date: 2017-11-24
武汉重工铸锻有限责任公司
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[0010] The schematic diagram of traditional furnace temperature control is as follows: figure 1 As shown, the temperature of each point is precisely controlled through the control algorithm, but this algorithm does not consider the heat exchange time and heat exchange degree between the high-temperature flue gas in the furnace and the workpiece. If the heat exchange time is too short, the heat exchange will be insufficient, and the Part of the heat is lost from the flue before it can exchange heat with the workpiece, and the heat loss is serious, which is not conducive to improving the thermal efficiency of the gas furnace
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[0043] The present invention will be further described in conjunction with the accompanying drawings and embodiments.
[0044] Schematic diagram of traditional furnace temperature control figure 1 As shown, the temperature of each point is precisely controlled through the control algorithm, but this algorithm does not consider the heat exchange time and heat exchange degree between the high-temperature flue gas in the furnace and the workpiece. If the heat exchange time is too short, the heat exchange will be insufficient, and the Part of the heat is lost from the flue before heat exchange with the workpiece, and the heat loss is serious, which is not conducive to improving the thermal efficiency of the gas furnace.
[0045] The computer intelligent fuzzy control energy-saving method for the furnace temperature of the gas furnace kiln provided by the present invention is mainly composed of three parts: an intelligent fuzzy control algorithm, an energy-saving control strategy, ...
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The invention relates to an intelligent fuzzy control energy-saving method of a gas furnace hearth temperature computer. The method comprises three parts, namely an intelligent fuzzy control algorithm, an energy-saving control strategy and a same-period multi-pulse burner uniformly-spaced cross output method. The intelligent fuzzy control algorithm realizes accurate temperature control on the basis of a control rule self-adjusting fuzzy algorithm and an intelligent integration; the energy-saving control strategy judges the degree of heat exchange between high-temperature flue gas and a workpiece according to the change of in-furnace temperature and adjusts the output quantity of gas in real time to realize optimum control of the output quantity of gas; and the same-period multi-pulse burner uniformly-spaced cross output method realizes minimum instantaneous gas output by adjusting the time sequence of output of burners without changing a control output value, so that the instantaneous pressure difference between a furnace bottom and a furnace top is reduced, the rising speed of the high-temperature flue gas is lowered, and accordingly the time of heat exchange between the high-temperature flue gas and the workpiece is prolonged to ensure that heat is absorbed completely.
Description
technical field [0001] The invention belongs to the field of intelligent control in the automatic process control of industrial furnaces and kilns, specifically belongs to computer intelligent fuzzy control technology, and specifically relates to an energy-saving method for computer intelligent fuzzy control of the furnace chamber temperature of a gas furnace. Background technique [0002] At present, the energy-saving technologies adopted by gas-fired furnaces are as follows: [0003] 1. Adopt air, gas heat exchanger and regenerative combustion technology to realize waste heat recovery of high temperature flue gas; [0004] 2. Use heat-insulating, light-weight, refractory and heat-preserving furnace lining materials, usually energy-saving aluminum silicate fiber cotton; [0005] 3. Adopt energy-saving burner technology, that is, choose energy-saving burner; [0006] 4. The use of infrared radiation coating technology can improve the heat transfer speed; [0007] 5. Autom...
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IPC IPC(8): F27D19/00
Inventor 李佐雄张捷熊朝国
Owner 武汉重工铸锻有限责任公司