Burner tip and burner

Abstract

A burner tip ( 1 ) having a burner outlet opening ( 3 ) and at least one burner tip part ( 11 ) which surrounds the burner outlet opening ( 3 ) and has a burner tip wall ( 11 A) with an end wall ( 47, 67, 147 ) forming a closed end of the burner tip part ( 11 ). The burner tip part ( 11 ) has in its interior a hollow space extending to the end wall ( 47 ), wherein the burner tip wall ( 11 A) has an inner side facing towards the hollow space. A displacement body ( 5 ) arranged in the hollow space, has an outer side facing towards the inner side of the burner tip wall ( 11 A). At least one flow channel ( 10 ) is formed between the inner side of the burner tip wall ( 11 A) and the outer side of the displacement body.

1 . A burner tip comprising:
 a burner discharge orifice;   at least one burner tip part configured to encompass the burner discharge orifice, the tip part has a burner-tip wall with an end wall which forms a closed end of the burner tip part,   the burner tip part includes an interior which has a cavity which reaches up to the end wall, and the burner-tip wall has an inner side pointing towards the cavity,   a displacement body arranged in the cavity and having an outer side facing the inner side of the burner-tip wall;   at least one flow passage between the inner side of the burner-tip wall and the outer side of the displacement body, and   the displacement body is of hollow design.   
     
     
         2 . The burner tip as claimed in  claim 1 , wherein the displacement body has a near end, which is nearer to the end wall and a far end which is further from the end wall and an interior space and, in the region of the far end, at least one opening which opens towards the interior space. 
     
     
         3 . The burner tip as claimed in  claim 2 , further comprising: at least one flow guiding element arranged in the displacement-body opening and configured such that the guiding element divides the displacement-body opening into an inflow section and an outflow section and in such a way that a flow path is formed around the flow guiding element between the inflow section and the outflow section. 
     
     
         4 . The burner tip as claimed in  claim 2 , further comprising: the displacement body has at least one additional opening which is open towards the interior space and is arranged between the near end of the displacement body and the displacement-body opening which is arranged in the region of the far end, and
 the displacement-body interior space forms a flow path between the displacement-body opening and the additional displacement-body opening.   
     
     
         5 . The burner tip as claimed in  claim 3 , further comprising:
 a collecting chamber located in and the displacement-body interior space are moved, crossed out from original position and underlined in new position, branching from the flow path, for receiving foreign bodies separated out of a fluid flowing through the flow path.   
     
     
         6 . The burner tip as claimed in  claim 5 , further comprising:
 an inlet for the collecting chamber located in a region of the flow path having a change of flow direction.   
     
     
         7 . The burner tip as claimed in  claim 1 , further comprising:
 support structures connecting the displacement body to the inner side of the burner-tip wall, the support structures extend from the outer side of the displacement body to the inner side of the burner-tip wall.   
     
     
         8 . The burner tip as claimed in  claim 7 , further comprising:
 the support structures comprise rib-like or pillar-like structures, and adjacent rib-like or pillar-like structures which converge to form arches on an outer side of the displacement body and/or on the inner side of the burner-tip wall, at least in the region of the end wall.   
     
     
         9 . The burner tip as claimed in  claim 8 , wherein the arches are pointed arches. 
     
     
         10 . The burner tip as claimed in  claim 7 , wherein a density of the support structures which connect the displacement body to the burner-tip wall, is increased at least in the region of the end wall in comparison to other regions of the burner-tip wall. 
     
     
         11 . The burner tip as claimed in  claim 10 , further comprising:
 where the density of the support structures is increased, the burner-tip wall is of thinner design in comparison to regions without increased density of support structures.   
     
     
         12 . The burner tip as claimed in  claim 7 , wherein the displacement body is formed in one piece with the support structures and the burner-tip wall. 
     
     
         13 . The burner tip as claimed in  claim 7 , wherein the burner-tip wall is lined with a thermal barrier coating on its outer side, at least in the region of the end wall. 
     
     
         14 . The burner tip as claimed in  claim 7 , further comprising:
 swirl vanes, which project at least partially into the burner discharge orifice, are formed in one piece with the burner-tip wall.   
     
     
         15 . The burner tip as claimed in  claim 14 , wherein the flow passage between the inner side of the burner-tip wall and the outer side of the displacement body extends at least partially through the swirl vanes. 
     
     
         16 . The burner tip as claimed in  claim 14 , wherein the swirl vanes form a blading assembly which has the form of a nozzle which reduces the flow cross section in specific regions of the blading assembly configured for an oxygen-steam mixture flowing through the blading assembly. 
     
     
         17 . The burner tip as claimed in  claim 7 , wherein the burner tip part and the displacement body are of toroidal design. 
     
     
         18 . A burner with a burner tip as claimed in  claim 1 .