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Patent Agency Ranking
公开(公告)号：CA2841642A1
公开(公告)日：2013-01-17
申请号：CA2841642
申请日：2012-07-11
Inventor： CONRADS HANS GEORG , HALM ALEXANDER , BOHM MARTIN
Abstract: The invention relates to a device and to a method for controlling the fuel-air ratio in the combustion of ground coal in a firing system of a coal-fired power station, which comprises means for pneumatically conveying the ground coal to the burners (16) of the firing system of a coal-fired power station and means for supplying air for combustion to the burners (16) or into the furnace (15) of the firing system of a coal-fired power station, and in which the quantity of air for combustion and the quantity of carrier air are controlled. The aim of the invention is high reliability of the control of the fuel-air ratio, wherein the measurement of the quantity of air for combustion and the measurement of the quantity of carrier air are carried out according to the correlation measurement method by evaluating electrical signals obtained by means of sensors (11) arranged in the air stream. According to the invention, said aim is achieved by a measuring device for measuring the quantity of air, said device comprising a correlation measurement device (12) that evaluates signals generated by electrostatic induction on two sensors (11) arranged one after the other in the air stream,in the air flow direction (s). An electrode (10) having an electrode contour, which has an average radius (rm) with 0.1 mm = rm = 1.2 mm, is arranged in the flow direction (s) of the air in front of the sensors (11) at a distance (I) that is larger than 1 x the inner width of the flow cross-section of the conduit conveying the air and smaller than 10 x the inner width of the flow cross-section of the conduit conveying the air in the region of the sensors (11) in the flow cross-section of the conduit conveying the air. The counter-electrode (13, 25), which acts electrically with respect to the electrode (10), is arranged in the flow direction (s) of the air between the electrode (10) and the sensors (11), and the electrode (10) and the counter-electrode (13, 25) are connected to the poles of a high voltage source (9) having a voltage (U) of 12 kV = U = 20 kV. The electrode (10) and the counter-electrode (13, 25) are connected to the high voltage source (9) in particular only during the starting phase of the firing system of a coal-fired power station or at air flow rates
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公开(公告)号：PL2742287T3
公开(公告)日：2016-03-31
申请号：PL12768699
申请日：2012-07-11
Inventor： CONRADS HANS GEORG , HALM ALEXANDER , BOHM MARTIN
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公开(公告)号：AU2012283555A1
公开(公告)日：2014-01-23
申请号：AU2012283555
申请日：2012-07-11
Inventor： CONRADS HANS GEORG , HALM ALEXANDER , BOHM MARTIN
Abstract: The invention relates to a device and to a method for controlling the fuel-air ratio in the combustion of ground coal in a firing system of a coal-fired power station, which comprises means for pneumatically conveying the ground coal to the burners (16) of the firing system of a coal-fired power station and means for supplying air for combustion to the burners (16) or into the furnace (15) of the firing system of a coal-fired power station, and in which the quantity of air for combustion and the quantity of carrier air are controlled. The aim of the invention is high reliability of the control of the fuel-air ratio, wherein the measurement of the quantity of air for combustion and the measurement of the quantity of carrier air are carried out according to the correlation measurement method by evaluating electrical signals obtained by means of sensors (11) arranged in the air stream. According to the invention, said aim is achieved by a measuring device for measuring the quantity of air, said device comprising a correlation measurement device (12) that evaluates signals generated by electrostatic induction on two sensors (11) arranged one after the other in the air stream,
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公开(公告)号：AU2012283555B2
公开(公告)日：2017-02-02
申请号：AU2012283555
申请日：2012-07-11
Inventor： CONRADS HANS GEORG , HALM ALEXANDER , BOHM MARTIN
Abstract: The invention relates to a device and to a method for controlling the fuel-air ratio in the combustion of ground coal in a firing system of a coal-fired power station, which comprises means for pneumatically conveying the ground coal to the burners (16) of the firing system of a coal-fired power station and means for supplying air for combustion to the burners (16) or into the furnace (15) of the firing system of a coal-fired power station, and in which the quantity of air for combustion and the quantity of carrier air are controlled. The aim of the invention is high reliability of the control of the fuel-air ratio, wherein the measurement of the quantity of air for combustion and the measurement of the quantity of carrier air are carried out according to the correlation measurement method by evaluating electrical signals obtained by means of sensors (11) arranged in the air stream. According to the invention, said aim is achieved by a measuring device for measuring the quantity of air, said device comprising a correlation measurement device (12) that evaluates signals generated by electrostatic induction on two sensors (11) arranged one after the other in the air stream,
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公开(公告)号：ES2556002T3
公开(公告)日：2016-01-12
申请号：ES12768699
申请日：2012-07-11
Inventor： CONRADS HANS GEORG , HALM ALEXANDER , BOHM MARTIN
Abstract: Sistema de combustión de una central para carbón con un dispositivo para el control de la relación airecombustible en la combustión de carbón molido, que presenta en la cámara de combustión (15) del sistema de combustión de una central para carbón de los medios para el avance neumático de carbón molido a los quemadores (16) del sistema de combustión de una central para carbón, así como medios para la entrada del aire de combustión en los quemadores en la cámara de combustión (15) del sistema de combustión de una central para carbón, donde por lo menos los dispositivos siguientes se disponen en la dirección del flujo del aire, un ventilador de aire frío (2) para la aspiración de aire frío del ambiente circunstante, un ventilador de molino (3) para el avance de una parte del aire frío aspirado como aire de transporte para la carga con carbón molido, un precalentador de aire (4) para el precalentamiento del aire frío aspirado y de una parte del aire de transporte usando el calor de gas de los humos del sistema de combustión de una central para carbón, un dispositivo de control de la cantidad de aire para el control de la cantidad del aire de combustión introducida en la cámara de combustión (15), un dispositivo de control de cantidad de aire para el control de la cantidad de aire de transporte de utilizar para el avance neumático de carbón molido, así como dispositivo de medición (12, 20,21) para la medición de la cantidad de aire de combustión introducida en la cámara de combustión (15) y de la cantidad de aire de transporte de utilizar para el avance neumático de carbón molido y un dispositivo (7,14) para la entrada dosificada de una cantidad preseleccionada de carbón molido en los quemadores (16), y donde está previsto un dispositivo de medida por correlación (12) que evalúa las señales producidas mediante inducción electroestática sobre dos sensores dispuestos uno detrás otro en dirección del flujo (s) del aire para la medición de la cantidad de aire (12, 20,21) caracterizado por el hecho de que en la dirección del flujo (s) del aire antes de los sensores (11) del dispositivo de medida por correlación (12) a un distancia los 1 x diámetro interior de la sección transversal del flujo del canal de conducción del aire
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