Application of fuel oil pressure-stabilizing system in continuous melting furnace

Abstract

The invention relates to an application of a fuel oil pressure-stabilizing system in a continuous melting furnace, especially in an aluminium continuous melting furnace. Mainly in the fuel oil pressure-stabilizing system, an oil pump, a pressure sensor, a digital controller and a frequency converter form a standard closed loop circuit, and the working process is as follows: the digital controllersets and outputs a pressure reference value to the frequency converter as a direct current signal; the output voltage of the frequency converter controls the rotating speed and frequency conversion ofa motor of the oil pump and the outlet pressure of the oil pump changes, thus obtaining a proper and stable oil pressure signal; and then the pressure sensor transmits the oil pressure signal to thedigital controller and the obtained control output value is used for the closed loop control of the next round, thus controlling the oil pressure at the given pressure reference value and stabilizingthe oil pressure. The fuel oil pressure-stabilizing system effectively controls the rotating speed of the motor of the oil pump generating pressure, thus controlling the supply oil output of the oil pump, obtaining stable oil quantity, leading to the optimal effect of flames generated by a combustion gun of the melting furnace, ensuring the phenomena such as black smoke emission and fire accidentscaused by the instable oil pressure of the melting furnace are completely eliminated under the precondition of sufficient melting capacity of the melting gun, and meanwhile saving energy.

Description

Technical field: [0001] The invention relates to the application of a fuel oil pressure stabilizing system in a continuous melting furnace, especially the application in an aluminum continuous melting furnace. Background technique: [0002] At present, control valves or other valve bodies are usually used for passive blocking control of industrial controlled objects (pressure flow, etc.), so as to obtain a suitable control amount until the balance point (the difference between the set value and the measured value of the controlled object, That is, the deviation value is zero), but this control mode is passive, which not only makes the controlled object lag behind the control, but also a small disturbance will produce periodic disturbances, and there are also defects such as the dead zone and leakage of the regulating valve , will seriously affect the control effect, and even make the automatic control fail. Invention content: [0003] The purpose of the present invention ...

AI Technical Summary

Problems solved by technology

[0002] At present, control valves or other valve bodies are usually used for passive blocking control of industrial controlled objects (pressure flow, etc.), so as to obtain a suitable control amount until the balance point (the difference between the set value and the measured value of the controlled object, That is, the deviation value is zero), but this control mode is passive, which not only makes the controlled object lag behind the control, but also a small disturbance will produce periodic disturbances, and there are also defects such as the dead zone and leakage of the regulating valve , will seriously affect the control effect, and even make the automatic control fail

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