Method for operating a multi-burner system by means of combustion air pressure measurement and regulation

Abstract

The invention relates to a method for operating a multiple burner system ( 32 ), which comprises a number of burner groups, whereby each burner group have at least one air duct ( 3,8 ) assigned, via which air is supplied to a burner group, whereby each burner group has at least one k th air channel ( 4,6 ) by which the supplied air splits up into a k th air, whereby for each k th air channel ( 4,6 ) of all burner groups an air pressure value for the k th air is measured, whereby all measured air pressure values for the k th air are compared with one another, whereby it is checked if air pressure values for the k th air of the burner groups differ from one another, whereby deviating air pressure values of the k th air inside the k th air channels ( 4,6 ) are modified.

1 . Method for operation of a multiple burner system ( 32 ,  34 ,  44 ,  46 ), comprising
 two or more burner groups ( 72 ,  72   a,    72   b ),
 wherein each burner group ( 72 ,  72   a,    72   b ) is associated with at least one air intake duct ( 3 ,  8 ,  84 ,  98 ) through which air is supplied to the burner group ( 72 ,  72   a,    72   b ), 
 wherein each burner group ( 72 ,  72   a,    72   b ) has at least one k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ) with which the supplied air is divided up into an k th  air, 
 wherein for each k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ) of all burner groups ( 72 ,  72   a,    72   b ) an air pressure value is measured for the k th  air for all burner groups ( 72 ,  72   a,    72   b ), 
 wherein all air pressure values measured for k th  air for the burner groups ( 72 ,  72   a,    72   b ) are compared with one another, to determine whether the air pressure values for the k th  air for the burner groups deviate from one another, 
 wherein deviating arc pressures for the k th  air are changed inside the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ). 
   
     
     
         2 . The method as in  claim 1 , in which all measured air pressure values for the k th  air are collected at one location and compared with one another. 
     
     
         3 . The method as in  claim 1 , performed for a multiple burner system ( 32 ,  34 ,  44 ,  46 ) with a number of burner groups ( 72 ,  72   a,    72   b ), wherein each burner group ( 72 ,  72   a,    72   b ) comprises at least one burner ( 2 ,  22 ,  24 ,  26 ,  28 ,  30 ,  36 ,  74 ,  74   a,    74   b,    76 ,  76   a,    76   b,    78 ,  78   a,    78   b ), wherein each burner ( 2 ,  22 ,  24 ,  26 ,  28 ,  30 ,  36 ,  74 ,  74   a,    74   b,    76 ,  76   a,    76   b,    78 ,  78   a,    78   b ) is associated with at least one air supply duct ( 3 ,  8 ,  84 ,  98 ), through which the burner ( 2 ,  22 ,  24 ,  26 ,  28 ,  30 ,  36 ,  74 ,  74   a,    74   b,    76 ,  76   a,    76   b,    78 ,  78   a,    78   b ) is supplied with air, wherein each burner ( 2 ,  22 ,  24 ,  26 ,  28 ,  30 , 36 ,  74 ,  74   a,    74   b,    76 ,  76   a,    76   b,    78 ,  78   a,    78   b ) has the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ), with which the air supplied is divided up into the k th  air, wherein for each k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ) for all burners ( 2 ,  22 ,  24 ,  26 ,  28 ,  30 , 36 ,  74 ,  74   a,    74   b,    76 ,  76   a,    76   b ,  78 ,  78   a,    78   b ) the air pressure value for the k th  air is measured, wherein all air pressure values measured for the k th  air are compared with one another to determine whether the air pressure values for the k th  air for the burners ( 2 ,  22 ,  24 ,  26 ,  28 ,  30 , 36 ,  74 ,  74   a ,  74   b,    76 ,  76   a,    76   b,    78 ,  78   a,    78   b ) deviate from one another, wherein deviating air pressure values for the k th  air are changed within the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ). 
     
     
         4 . The method as in  claim 1 , in which an air pressure value for the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ) is changed by changing the cross-section of the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ). 
     
     
         5 . The method as in  claim 1 , in which an air pressure value for the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ) is changed by changing at least one air supply module ( 14 ,  15 ,  16 ,  17 ,  40 ,  100 ) located inside the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ). 
     
     
         6 . The method as in  claim 5 , in which the air pressure value for the k th  air is changed inside the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ) with at least one air supply module ( 14 ,  15 ,  16 ,  17 ,  40 ,  100 ) designed as an air damper. 
     
     
         7 . The method as in  claim 4 , in which the air pressure of the k th  air in the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ,  84 ) has an actual value of p act.  and the cross-section of the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ,  84 ) has an actual value of A act. , wherein for the cross-section of the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ,  84 ) a nominal value of Anom. is set, wherein for the air pressure of the k th  air in the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ,  84 ) a nominal value of p nom.  is set, wherein P nom. /P act.  is proportional to (A act. /A nom. ) 2 . 
     
     
         8 . Setup for operation of a multiple burner system ( 32 ,  34 ,  44 ,  46 ), comprising two or more burner groups ( 72 ,  72   a,    72   b ), wherein each burner group ( 72 ,  72   a,    72   b ) is associated with at least one air intake duct ( 3 ,  8 ,  84 ,  98 ), through which air is supplied to the burner group ( 72 ,  72   a,    72   b ), wherein each burner group ( 72 ,  72   a,    72   b ) has at least one k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ), with which the supplied air is divided up into an k th  air, wherein the setup includes at least one pressure measuring device ( 49 ,  66 ,  68 ,  104 ) designed for measuring an air pressure value for the k th  air for each k th  air channel of all burner groups ( 72 ,  72   a,    72   b ) wherein all air pressure values measured for k th  air for the burner assemblies ( 72 ,  72   a,    72   b ) are to be compared with one another, to determine whether the air pressure values for the k th  air for the burner groups ( 72 ,  72   a,    72   b ) deviate from one another, wherein deviating air pressures for the k th  air are to be changed inside the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ,  84 ). 
     
     
         9 . The setup as in  claim 8 , in which at least one pressure measuring device ( 49 ,  66 ,  68 ,  104 ) is located centrally and designed to simultaneously measure all air pressure values for the k th  air. 
     
     
         10 . The setup as in  claim 8 , comprising a number of probes ( 18 ,  20 ,  42 ,  79 ) for measuring the air pressure, wherein along the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ,  84 ) at least one probe ( 18 ,  20 ,  42 ,  79 ) is located, which is connected to at least one pressure measuring device( 49 ,  66 ,  68 ,  104 ). 
     
     
         11 . The setup as in  claim 8 , comprising at least one air supply module( 14 ,  15 ,  16 ,  17 ,  40 ,  100 ) located inside the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ,  84 ), designed to change a cross-section of the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ,  84 ). 
     
     
         12 . -The setup as in  claim 8 , comprising a control unit ( 51 ,  110 ) designed to compare all air pressure values measured for the k th  air of all burner groups ( 72 ,  72   a,    72   b ) with one another and to determine whether the air pressure values for the k th  air of all burner groups ( 72 ,  72   a,    72   b ) deviate from one another, wherein the control unit ( 51 ,  110 ) is designed to change the cross-section of the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ,  84 ) and compensate any deviating air pressure value for the k th  air within the k th  air channel ( 4 ,  6 ,  38 ,  80 ,  82 ,  84 ).