Heating furnace heating-section hearth temperature detection value calculating method
A technology of furnace temperature and calculation method, which is applied in combustion methods, lighting and heating equipment, temperature control by electric means, etc. The value cannot be accurately reflected and other problems, so as to achieve the effect of improving the effect of peroxy combustion and furnace temperature control, strong versatility and improving product quality.
Active Publication Date: 2014-11-05
WISDRI ENG & RES INC LTD
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Problems solved by technology
The furnace temperature detection value obtained by this simple processing and calculation method cannot accurately reflect the real situation of the furnace temperature in each logical heating zone, which in turn affects the effect of combustion-supporting air and gas mixed peroxygen combustion and the accuracy of furnace temperature control, and ultimately affects Heat treatment product quality to strip or coil
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[0041] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0042] Such as figure 1 As shown, a method for calculating the detection value of the furnace temperature in the heating section of the heating furnace is to comprehensively calculate the temperature detection value of the entire furnace by integrating and utilizing the relevant detection information of multiple temperature measuring points in each logical heating zone of the heating section of the heating furnace, so that Reflect the actual situation of the furnace temperature in the heating section of the heating furnace as truly as possible, and provide accurate feedback variables for combustion control.
[0043] A met...
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The invention discloses a heating furnace heating-section hearth temperature detection value calculating method. The method comprises the following steps: (1) the effective coefficient of each temperature measuring point is initialized according to the detection state of the temperature measuring point; (2) the effective coefficient of each temperature measuring point is corrected according to the degree to which the temperature detection value of the temperature measuring point deviates from the arithmetic mean value of the temperature measuring point; (3) the weighting coefficient of each temperature measuring point is calculated according to the arithmetic mean value and the temperature detection value of the temperature measuring point; and (4) the hearth temperature detection value is determined or calculated according to the calculated effective coefficients and weighting coefficients and the detection values of the temperature measuring points. The method of the invention is simple to implement, and requires no increase of the number of hardware equipment of the existing control system. The method is not affected by restrictions of the number and type of temperature measuring points, and is highly universal. The finally calculated hearth temperature is closer to the true value, the precision of hearth temperature control can be improved, and the product quality can be improved.
Description
technical field [0001] The invention relates to the technical field of steel rolling automation, in particular to a method for calculating a furnace temperature detection value in a heating section of a heating furnace. Background technique [0002] In the steel rolling process of the metallurgical industry, the gas and combustion-supporting air of a certain pressure and flow are usually delivered to the burner in the heating section of the heating furnace for mixed combustion, and the heat generated will be radiated to heat the furnace in the heating section. The steel strip or placed steel coil is heated to the set process temperature to meet the requirements of steel heat treatment. The heating section of the heating furnace is usually divided into several logical heating zones, and each logical heating zone is equipped with a certain number of gas control valves, frequency conversion combustion-supporting fans, combustion-supporting air control valves, burners, temperat...
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Inventor 周登科
Owner WISDRI ENG & RES INC LTD