Siemens Aktiengesellschaft

Siemens Energy, Inc.

Siemens Energy Global Gmbh & Co. Kg

Itw Automotive Products Gmbh Co. Kg

Christian Beck

Olga Deiss

Stefan Reich

Andreas Böttcher

Thomas Grieb

Thomas Hauser

Marc Tertilt

Tobias Krieger

Patrick Lapp

Patrick Ronald Flohr

Juan Enrique Portillo Bilbao

Jan Wilkes

Werner Krebs

Berthold Köstlin

Matthias Hase

Jens Kleinfeld

Simon Purschke

Rajesh Rajaram

Björn Buchholz

Jürgen Meisl

Günther Walz

Joseph Meadows

Christopher Grandt

Stefan Dederichs

Matthias Chlebowski

Sabrina Isolde Siebelist

Benjamin Witzel

Simon Bez

Fabian Sander

Anna Knödler

Bernhard Wegner

A pilot cone for use in a burner arrangement having a pilot burner includes a casing which widens downstream along a burner axis and has a plurality of cooling air passages passing through it; an inner wall which extends upstream starting from the upstream end of the casing; an annular gap which runs along the inner wall on the radially outer side; and a plurality of cooling air openings which establish a connection between the annular gap and the cooling air passages. Another wall extends upstream at a distance from the inner wall starting from the casing and delimits the annular gap on the radially outer side, the inner wall having a plurality of holes.

Pilot cone cooling

A combustor and a method involving burner mains structurally configured to damp vibrational modes that can develop under high-frequency combustion dynamics are provided. The combustor may include a carrier (), and a plurality of mains () disposed in the carrier. Some of the mains (labeled with the letter X) include a body having a different structural feature relative to the respective bodies of the remaining mains. The mains with the different structural feature may be selectively grouped in the carrier to form at least one set of such mains effective to damp predefined vibrational modes in the combustor.

Combustor and method for damping vibrational modes under high-frequency combustion dynamics

A burner arrangement having a combustion chamber, a multiplicity of mixing ducts discharging into the combustion chamber, in which ducts combustion air and fuel introduced during proper operation are mixed, and at least one resonator which has a defined resonator volume and resonator openings. The mixing ducts have mixing tubes which extend axially through an annular space defined between a tubular outer wall, a tubular inner wall arranged with the radial separation from the outer wall, an annular end plate arranged upstream and an annular end plate arranged downstream, wherein the end plates are provided with through openings which receive and/or prolong the mixing tubes. The resonator openings of the at least one resonator are designed as air ducts that extend through the downstream end plate, and the resonator volume of the at least one resonator is formed by at least one part of the annular space.

Burner arrangement with resonator

A fuel nozzle body having a rearward end and a front end with an outer tube which extends from the rearward end to the front end and has radial openings for a first fuel in the region of the front end, and an inner tube which is arranged concentrically to the outer tube and which opens in the region of the front end into a nozzle head, which has additional openings for a second fuel, wherein, in the region of the front end, the inner tube is guided in the outer tube by two fits which are arranged axially between the radial openings and the additional openings, and wherein the first fit closest to the radial openings is configured as a circumferential web around the inner tube, and wherein the second fit is configured with at least one interruption on the perimeter.

Fuel nozzle body

A burner assembly with a combustion chamber, a plurality of mixing ducts leading into the combustion chamber, where combustion air and introduced fuel are mixed. The mixing ducts are formed by mixing tubes extending axially through an annular space between a tubular outer wall, a tubular inner wall arranged radially at a distance from the outer wall, a ring-shaped end plate arranged upstream and a ring-shaped end plate arranged downstream. The end plates have through-openings, which accommodate and/or extend the mixing tubes, and the end plates have, both radially inside and outside, a circumferential edge extending in the direction of the annular space, with axial bores in the edge of the ring-shaped end plate arranged downstream. The axial bores extend from the annual space into the end plate, and at least one opening is for removing cooling air, the opening branching from the axial bore.

Bruner assembly

A fuel nozzle including vortex generating features for use in a combustion turbine engine is provided. An array of inner pre-mixing conduits () extends between an inlet end () and an outlet end () of the nozzle. An array of outer pre-mixing conduits () may be disposed radially outwardly relative to the inner pre-mixing conduits (). A fuel-directing tube () includes fuel-directing arms () structured to direct fuel flow into the outer pre-mixing conduits () to be mixed with a flow of air. The fuel-directing arms include a bluff structural arrangement () that may be disposed upstream of fuel injection locations (') into the outer pre-mixing conduits (). The proposed nozzle is believed to provide superior micro-mixing capability, such as by increasing the depth of penetration of jets of fuel in a cross-flow of air, and/or formation of vortices in a wake zone downstream from the vortex generating features.

Fuel nozzle having respective arrays of pre-mixing conduits with respective vortex generators

A burner having a plurality of pre-mixing chambers each having a fuel nozzle for two fuels, the fuel nozzle has a fuel lance extending in a flow direction, in which fuel lance first outlet openings for a first fuel are introduced. The fuel lance is surrounded by an outer pipe having at least one second outlet opening for a second fuel, the first outlet openings oriented radially and the second outlet opening oriented axially, a flow cross-section is formed between the fuel lance and the inside of the pre-mixing chamber and vortex generators are arranged on the fuel lance. At least one vortex generator is arranged upstream of the first outlet openings and downstream of the second outlet opening. The distance of the first outlet openings from an end of the pre-mixing chamber is at least three times as large as a cross-section of the pre-mixing chamber.

Burner, gas turbine having such a burner, and fuel nozzle

A jet burner has a hot-gas side, which faces toward a combustion chamber during operation, and a cold-gas side, which faces away from a combustion chamber, including a base plate on which there are arranged multiple jet nozzles, wherein the base plate has at least one cooling duct, wherein the at least one cooling duct issues into a burner stage which comprises a pilot burner arranged on the base plate.

Jet burner with cooling duct in the base plate

Growing community of inventors

Essen, Germany

Christian Beck