Control method for constant-temperature water return of solid regenerating furnace

Abstract

The invention discloses a control method for constant-temperature water return of a solid regenerating furnace and relates to the technical field of solid regenerating furnace automation control. According to the control method, the water return temperature is a set value, an ideal real-time changing outlet water temperature value is calculated through an empirical equation, the outlet water temperature can be controlled precisely through single-stage or two-stage PID adjustment, and constant-temperature water return is achieved by controlling the real-time changing outlet water temperature. The control method has the beneficial effects that response is made to environment temperature change in time, the outlet water temperature value needed by keeping the constant water return temperaturebeing the set value is calculated, adjustment is conducted automatically according to the calculated outlet water temperature, and thus the water return temperature is basically constant to be near the set value; and in addition, the regenerating furnace releases heat stably, the state that a fan stops or starts suddenly does not exist, the constant water return temperature is the set value, theovershoot is plus or minus 0.5 DEG C, the regenerating furnace releases heat stably, thus energy is saved, and the water return temperature can also be stabilized.

Description

technical field [0001] The invention relates to the technical field of automatic control of solid heat storage furnaces, in particular to a control method for constant temperature return water of solid heat storage furnaces. Background technique [0002] At present, under the premise of meeting the heating demand, the heating system of the regenerative furnace should maintain the return water of the heating system in order to achieve the effect of energy saving, avoid the occurrence of unfavorable situations such as the room temperature of the front-end and high-rise heat users is too high, and the room temperature of the end users is too low. The temperature is stable within the set range or constant temperature return water. However, due to the slow response of the heating system and the long cycle period, generally more than half an hour, the ideal constant temperature return water heating cannot be realized through the existing automatic control method. Contents of the...

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Problems solved by technology

However, due to the slow response of the heating system and the long cycle period, generally more than half an hour, the ideal constant temperature return water heating cannot be realized through the existing automatic control method

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