Burner tip and burner

Abstract

A burner tip having a burner outlet opening includes a burner tip part ( 21 ) which surrounds the burner outlet opening and has a burner tip wall ( 21 A) with an end wall ( 67 ) forming a closed end of the burner tip part ( 21 ). The burner tip part ( 21 ) has in its interior a hollow space extending to the end wall ( 47 ), wherein the burner tip wall ( 21 A) has an inner side facing towards the hollow space. A displacement body in the hollow space has an outer side facing towards the inner side of the burner tip wall ( 21 A), forming at least one flow channel between the inner side of the burner tip wall ( 21 A) and the outer side of the displacement body. In a first aspect, the displacement body ( 15 ) is connected to the inner side of the burner tip wall ( 21 A) by supporting structures ( 56 ), which extend from the outer side of the displacement body to the inner side of the burner tip wall ( 21 A). In a second aspect, swirl blades ( 32 ) project at least partially into the burner outlet opening ( 3 ), and the burner tip wall ( 21 A). The swirl blades are each a single piece with that wall.

1 . A burner tip comprising:
 a burner discharge orifice;   at least one burner tip part which encompasses the burner discharge orifice; the at least one burner tip part has a burner-tip wall with an end wall which forms a closed end of the burner tip part; wherein   the burner tip part has an interior with 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, the displacement body has 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   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, and the displacement body is formed in one piece with the support structures and the burner-tip wall.   
     
     
         2 . The burner tip as claimed in  claim 1 , further comprising the support structures comprise rib-like or pillar-like structures and adjacent rib-like or pillar-like structures on at least one of the outer side of the displacement body the inner side of the burner-tip wall and these structures converge to form arches, at least in the region of the end wall. 
     
     
         3 . The burner tip as claimed in  claim 2 , wherein the arches comprises pointed arches. 
     
     
         4 . The burner tip as claimed in  claim 1 , wherein the support structures which connect the displacement body to the burner-tip wall have a density which is increased at least in the region of the end wall in comparison to other regions of the burner-tip wall. 
     
     
         5 . The burner tip as claimed in  claim 4 , wherein the burner-tip wall, where the density of the support structures is increased, is of thinner design in comparison to regions without increased density of support structures. 
     
     
         6 . (canceled) 
     
     
         7 . The burner tip as claimed in  claim 1 , further comprising the burner-tip wall is lined with a thermal barrier coating on its outer side, at least in the region of the end wall. 
     
     
         8 . The burner tip as claimed in  claim 1 , further comprising the displacement body is hollow. 
     
     
         9 . The burner tip as claimed in  claim 7 , wherein the displacement body includes a near end in relation to the end wall, a far end in relation to the end wall, an interior space and, in the region of the far end, has at least one opening which is open towards the interior space. 
     
     
         10 . The burner tip as claimed in  claim 8 , further comprising a flow guiding element projecting from the inner side of the burner-tip wall into the displacement-body opening in such a way that it divides the displacement-body opening into an inflow section and an outflow section and in such a way that around the flow guiding element a flow path is formed between the inflow section and the outflow section. 
     
     
         11 . The burner tip as claimed in  claim 9 , further comprising the displacement body has at least one additional opening which is open towards the interior space and arranged between the near end of the displacement body and the at least one additional opening of the displacement-body 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. 
     
     
         12 . The burner tip as claimed in  claim 10 , wherein a collecting chamber, branching from the flow path, for receiving foreign bodies in a fluid flowing through said flow path is located in the displacement-body interior space. 
     
     
         13 . The burner tip as claimed in  claim 11 , wherein an inlet for the collecting chamber is located in a region of the flow path in which a change of flow direction takes place. 
     
     
         14 . The burner tip as claimed in  claim 1 , wherein 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 , in which the flow passage which is formed between the inner side of the burner-tip wall and outer side of the displacement body extends at least partially through the swirl vanes. 
     
     
         16 . The burner tip as claimed in  claim 1 , wherein the burner tip part and the displacement body are of toroidal design. 
     
     
         17 . A burner tip comprising:
 a burner discharge orifice and at least one burner tip part which encompasses the burner discharge orifice;   the burner tip part has a burner-tip wall with an end wall which forms a closed end of the burner tip part; and   swirl vanes, which project at least partially into the burner discharge orifice, are formed in one piece with the burner-tip wall.   
     
     
         18 . The burner tip as claimed in  claim 17 , in which
 the burner tip part in its interior 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, with an outer side facing the inner side of the burner-tip wall, is arranged in the cavity; and   at least one flow passage is formed between the inner side of the burner-tip wall and the outer side of the displacement body.   
     
     
         19 . The burner tip as claimed in  claim 18 , wherein the flow passage which is formed 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. 
     
     
         20 . The burner tip as claimed in  claim 17 , 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 for an oxygen-steam mixture flowing through said blading assembly. 
     
     
         21 . A burner with a burner tip as claimed in  claim 1 . 
     
     
         22 . The burner tip as claimed in  claim 17 , wherein the flow passage which is formed between the inner side of the burner tip wall and outer side of the displacement body extends at least partially through the swirl vanes. 
     
     
         23 . A burner tip comprising:
 a burner discharge orifice;   a plurality of concentric burner tip parts which encompass the burner discharge orifice;   a first outermost burner tip part having a first burner tip wall with a first end wall which forms a first closed end of the first burner tip part;   the first burner tip part has a first interior with a first cavity which reaches up to the first end wall;   the first burner tip wall has a first inner side pointing toward the first cavity;   a first displacement body arranged in the first cavity; the first displacement body having a first outer side facing the first inner side of the first burner tip wall;   at least one first flow passage defined between the first inner side of the burner tip wall and the first outer side of the displacement body;   first support structures connecting the first displacement body to the first inner side of the burner tip wall, wherein the first support structures extend from the first outer side of the first displacement body to the first inner side of the first burner tip wall;   wherein the first displacement body is formed in one piece with the first support structures and the first burner tip wall;   a second burner tip part spaced radially inwardly of the first burner tip part;   the second burner tip part having a second burner tip wall with a second end wall which forms a second closed end of the second burner tip part;   the second burner tip part has a second interior with a second cavity which reaches up to the second end wall;   the second burner tip wall has a second inner side pointing toward the second cavity;   a second displacement body arranged in the second cavity; the second displacement body having a second outer side facing the second inner side of the second burner tip wall;   at least one second flow passage defined between the second inner side of the burner tip wall and the second outer side of the displacement body;   second support structures connecting the second displacement body to the second inner side of the burner tip wall, wherein the second support structures extend from the second outer side of the second displacement body to the second inner side of the second burner tip wall;   wherein the second displacement body is formed in one piece with the second support structures and the second burner tip wall;   a pilot burner part spaced radially inward of the second burner tip part;   the pilot burner tip part having a pilot burner tip wall with a pilot end wall which forms a pilot closed end of the pilot burner tip part;   the pilot burner tip part has a pilot interior with a pilot cavity which reaches up to the pilot end wall;   the pilot burner tip wall has a pilot inner side pointing toward the pilot cavity;   a pilot displacement body arranged in the pilot cavity; the pilot displacement body having a pilot outer side facing the pilot inner side of the pilot burner tip wall;   at least one pilot flow passage defined between the pilot inner side of the burner tip wall and the pilot outer side of the displacement body;   pilot support structures connecting the pilot displacement body to the pilot inner side of the burner tip wall, wherein the pilot support structures extend from the pilot outer side of the pilot displacement body to the pilot inner side of the pilot burner tip wall; and   wherein the pilot displacement body is formed in one piece with the pilot support structures and the pilot burner tip wall.   
     
     
         24 . The burner tip of  claim 23 , further comprising respective support structures between the respective first, second and pilot outer side of each of the first, second and pilot displacement bodies and a respective one of the first, second and pilot inner sides of the respective burner tip wall. 
     
     
         25 . The burner tip of  claim 23 , wherein each of the burner tip displacement bodies includes a near end in relation to the respective end wall thereof, a far end in relation to the respective end wall thereof, a respective interior space and, in the region of the respective far end, has at least one respective opening which is open towards the respective interior space. 
     
     
         26 . The burner tip as claimed in  claim 25 , further comprising each of the first, second and pilot displacement bodies has at least one respective additional opening which is open towards the respective interior space and is arranged between the near end of the respective displacement body and the respective at least one opening of the displacement-body arranged in the region of the respective far end, and the respective displacement-body interior space forms a flow path between the respective displacement-body opening and the respective additional displacement-body opening. 
     
     
         27 . A burner tip comprising:
 a burner discharge orifice;   a plurality of concentric burner tip parts which encompass the burner discharge orifice;   a first outermost burner tip part having a first burner tip wall with a first end wall which forms a first closed end of the first burner tip part;   the first burner tip part has a first interior with a first cavity which reaches up to the first end wall;   the first burner tip wall has a first inner side pointing toward the first cavity;   a first displacement body arranged in the first cavity; the first displacement body having a first outer side facing the first inner side of the first burner tip wall;   at least one first flow passage defined between the first inner side of the burner tip wall and the first outer side of the displacement body;   first support structures connecting the first displacement body to the first inner side of the burner tip wall, wherein the first support structures extend from the first outer side of the first displacement body to the first inner side of the first burner tip wall;   wherein the first displacement body is formed in one piece with the first support structures and the first burner tip wall;   a second burner tip part spaced radially inwardly of the first burner tip part;   the second burner tip part having a second burner tip wall with a second end wall which forms a second closed end of the second burner tip part;   the second burner tip part has a second interior with a second cavity which reaches up to the second end wall;   the second burner tip wall has a second inner side pointing toward the second cavity;   a second displacement body arranged in the second cavity; the second displacement body having a second outer side facing the second inner side of the second burner tip wall;   at least one second flow passage defined between the second inner side of the burner tip wall and the second outer side of the displacement body;   second support structures connecting the second displacement body to the second inner side of the burner tip wall, wherein the second support structures extend from the second outer side of the second displacement body to the second inner side of the second burner tip wall; and   wherein the second displacement body is formed in one piece with the second support structures and the second burner tip wall.