METHOD FOR PREDICTING DEPOSIT FORMATION IN POWER PLANTS OF MULTIPLE USE ON LIQUID HYDROCARBON FUELS AND COOLANTS Russian patent published in 2012 - IPC F02K9/00 B64F5/00 G01N25/72 G01K7/02 

FIELD: heating.

SUBSTANCE: invention refers to power industry, and namely to thermal measurements and measurements of flow rate of hydrocarbon fuels and heat carriers. Prediction method of deposit formation in power plants of multiple use on liquid hydrocarbon fuels and coolants consists in arrangement of several thermocouples on internal cooled metal surface with meshed profile in the form of cavities and measurement of temperature difference at the cavity bottoms and on the main surface of cooled wall in the controlled part of channel of power plant using calibration and experimental charts to determine the thickness of solid deposits at any moment of the power plant operation; according to the invention, in the controlled part of fuel feed (cooling) channel of the power plant there introduced and arranged is at least one flow metre of fuel velocity and consumption, number of cycles and operating time of the power plant; then, current parameters are measured and supplied to the calculation unit, and on the outside of the controlled fuel feed (cooling) channel there located are at least two thermocouples; at that, temperature of external wall is measured, and the relevant data is also supplied to the calculation unit, thus carrying out the calculation of internal wall temperature by heat conductivity formulae. The specified parameters of hydrocarbon fuels are entered to the calculation unit, all the entered specified and current data is processed, rate of deposit formation and thickness of hydrocarbon deposit is determined by the formulae considering heat and electric nature of deposit formation in liquid and hydrocarbon fuels and coolants; then, according to design thickness of hydrocarbon deposit layer and rate of deposit formation there made is a conclusion on degree of coked state of heated sections and approximate remaining time to partial or complete failure of fuel feed (cooling) channels the parameters of which are displayed on the information board of the information unit on the basis of operation of which the command unit supplies commands to the actuating unit to activate the deposit formation prevention system.

EFFECT: invention contributes to improvement of quality of preliminary prediction.

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