EP1001216A1 - Dispositif pour injecter un fluide dans un conduit - Google Patents

Dispositif pour injecter un fluide dans un conduit Download PDF

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Publication number
EP1001216A1
EP1001216A1 EP98121405A EP98121405A EP1001216A1 EP 1001216 A1 EP1001216 A1 EP 1001216A1 EP 98121405 A EP98121405 A EP 98121405A EP 98121405 A EP98121405 A EP 98121405A EP 1001216 A1 EP1001216 A1 EP 1001216A1
Authority
EP
European Patent Office
Prior art keywords
fluid
disc
channel
openings
disk
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98121405A
Other languages
German (de)
English (en)
Inventor
Carsten Tiemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP98121405A priority Critical patent/EP1001216A1/fr
Publication of EP1001216A1 publication Critical patent/EP1001216A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • F23D11/106—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting at the burner outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel

Definitions

  • the invention relates to a device for introducing a Fluids in a channel, especially for the introduction of Fuel into an air duct.
  • the invention also relates an arrangement of several such devices.
  • EP 0 580 683 B1 shows a burner arrangement from a pilot burner system and a main burner system.
  • the pilot burner system consists of a central oil supply and a concentrically arranged around this inner gas supply channel. This in turn is surrounded by a concentrically arranged one inner air supply duct.
  • the central oil supply has an oil nozzle at its end.
  • the inner air supply duct has a swirl blading in its end region.
  • the main burner system consists of a concentric to the pilot burner system arranged and tapering towards this outer air supply ring duct system. Also this air supply ring duct system is equipped with a swirl blading.
  • the swirl blading consists of hollow blades with Outlet nozzles in the flow cross section of the air supply ring duct system. From these outlet nozzles fuel can over the Cross section of the ring channel system can be distributed.
  • the object of the invention is to provide a device for Introducing a fluid into a channel where the fluid initiated evenly distributed over the channel cross-section can be.
  • this object is achieved by a device for introducing a fluid into a channel, comprising one extended along a pane surface, transversely into the Channel-installable disc in which fluid paths run through which pane has openings in the pane surface, each fluid path fluidly with one of these Connections are connected and with each fluid path the fluid is feedable.
  • a flat body is closed here as a disc understand that of several parts, especially several Partial disks can be constructed.
  • the device in particular the disc, becomes transverse to the channel axis, the channel cross section covering, built into the channel.
  • the one to be initiated Fluid is fed into the fluid paths and thus gets into it Interior of the disc.
  • the fluid arrives from the fluid paths the openings.
  • the openings are made by one flowing in the channel Medium flows through.
  • an inlet of the fluid e.g. arranged in the channel hollow swirl blades or against an injection of the fluid in the channel is thus a significant one improved distribution of the fluid across the channel cross-section reached.
  • This is particularly advantageous for a burner where the fluid is fuel and the medium is combustion air is. Thanks to the improved fine distribution of Fuel in the combustion air results in an equalization of combustion temperatures during combustion. This has resulted in a reduction in nitrogen oxide emissions Consequence because the nitrogen oxide emission exponentially with the flame temperature increases.
  • the openings preferably lead perpendicular to the pane surface through the disc, with the fluid paths parallel to the disc surface run in the disc.
  • the fluid paths are preferred formed by drilling. This is manufacturing technology particularly easy. E.g. are over an edge of the disc evenly spaced leading radially inside the disc Drilled holes in the disc. The edge can be a outer edge, but also an inner edge, being in the latter If the disc is preferably in the form of a ring having.
  • the openings are also preferred cut the bores of the fluid paths and thereby fluidically associated with them.
  • the flow paths preferably run in a chamber.
  • the disc is at least partially hollow, so that the Chamber is formed by the cavity.
  • the chamber can too formed by spaced disks arranged one above the other his.
  • the disk is preferably constructed from partial disks, further preferably from two dividing disks.
  • a A large number of grooves are made on the first side of the system, these grooves forming the fluid paths. It can additionally grooves are also made in the second side of the system be, preferably directly opposite the grooves in the first side.
  • the first and the second partial disk are preferred with one another welded, especially friction welded. Are preferred the grooves are milled or turned.
  • the device for introduction of the fluid is particularly easy to manufacture in this way.
  • the disk preferably has a center, at least part of the fluid paths in a straight direction on the Center is directed.
  • the disk is preferably one Circular disc.
  • the disk is preferably ring-shaped.
  • each Side path opens into one of the openings.
  • the fluid is at this embodiment introduced into the fluid paths, branches into the byways and then exits through the openings.
  • the device is preferably in an air duct Arranged burner, wherein the fluid is fuel. Further the burner is preferably designed for a gas turbine, in particular for a stationary gas turbine. Here is the burner preferably a hybrid burner, constructed from a diffusion burner and a premix burner, the device preferably in an air duct of the diffusion burner is arranged. It is conceivable to use the invention in applications where there is an even initiation of a Fluid arrives in a channel, especially if it is at the same time a good mixing of the fluid with one in the Channel flowing medium is desired.
  • a hybrid burner is in a premix mode or in one Diffusion operation operable.
  • Combustion air is used in the premix mode and fuel initially intimately mixed and then burned. At low loads, this is lean combustion not stable. In this case the diffusion operation used. This is where fuel and combustion air essentially mixed only during combustion.
  • the uniform distribution achieved by the device of fuel across a cross section of the air duct in particular a reduction in nitrogen oxide emissions Episode.
  • the openings penetrating the disc each have one Cross-sectional area.
  • the cross-sectional area is preferred a first opening smaller than that of a second opening, the first opening being a greater distance from the outside Edge of the disc has as the second opening.
  • the openings are circular holes.
  • the openings can e.g. arranged along straight lines equally spaced from each other that lead outwards from the center of the disc, where the diameter is closer to the center Openings is smaller than the diameter of further from Openings located at the center.
  • each device a different fluid can be supplied.
  • different fluids can flow evenly into the channel, simultaneously or one after the other.
  • E.g. can one Burners over one of the oil devices and over another Device gas can be supplied. It can also be water or a water / oil emulsion for nitrogen oxide reduction via a of the devices are initiated.
  • the individual devices can be in immediate succession, but also from each other spaced apart.
  • Figure 1 shows, broken away, a perspective View of a device 1 for introducing a fluid 24 into a channel 34.
  • a disc 2 arranged in the channel 34 is transverse to the direction of its expansion a disc 2 arranged.
  • the disc 2 is designed as a circular disc and covers the entire channel cross-section.
  • the disk 2 is along a disk surface 4 extended. Lead from an outer edge 4A of the disc 2
  • Fluid paths 15 designed as bores radially and parallel to the pane surface 4 inside the pane 2, in the direction at its center 2A.
  • Perpendicular to the pane surface 4 the disk 2 of openings 19 designed as bores enforced.
  • the openings 19 are over the disc surface 4 evenly distributed.
  • Each fluid path 15 is at least cut an opening 19 so that this fluid path 15th is fluidically connected to the opening 19.
  • the disc 2 is installed transversely in a channel (see figure 4).
  • a medium 20 flowing in the channel flows through the openings 19.
  • a fluid 24 is via the fluid paths 15 in the Disc 2 initiated. It branches into the openings 19 and emerges from these into channel 34. This mixes up the fluid 24 with the medium 20. Evenly over the multitude distributed openings 19 is a very good uniform distribution of the fluid 24 reached over the channel cross section.
  • each of the openings 19 represents a mixing section, in which the medium 20 is intimately mixed with the fluid 24.
  • Figure 2 shows a longitudinal section through a disc 2 for one Device 1 for introducing a fluid 24 into a Channel 34.
  • a chamber 15A Inside the disc 2 is a chamber 15A, limited by an upper pane part 2O and a lower pane part 2U in which the fluid paths 15 run. Vertical through as in the embodiment according to FIG 19. Fluid 24 exits chamber 15A via Openings 19 from.
  • Support elements 16 for stabilizing the Disk 2 connect the upper pane part 2O to the lower pane part 2U. By suitably designing the support elements 16 can also achieve channel formation for the fluid paths 15 become.
  • FIG. 3 shows a top view of a pane 2 of a device 1 for introducing a fluid 24 into a channel.
  • the Disk 2 is composed of a first partial disk 3 and a second indexing disc 9.
  • the first indexing disc 3 and the second partial disk 9 are annular.
  • the first disc 3 has a first, outer edge 5 and a first Appendix page 7 on.
  • the first one is graduated disc 3 shown transparently.
  • the first disc 3 lies with the first plant side 7 concentrically of the second partial disk 9.
  • the second partial disk 9 has one second, outer edge 11 and a second contact side 13 on.
  • the first partial disk 3 and the second partial disk 9 are with the first investment page 7 and the second investment page 11 on top of each other.
  • the first partial disk is preferred 3 and the second partial disk 9 friction welded together.
  • the first partial disk 3 and the second partial disk 9 are mutually concentric around a common center point 2A.
  • grooves 15 are milled, which form the fluid paths 15. These lead in a straight direction from the first edge 5 in Direction to the center point 2A.
  • concentric circles 17a, 17b and 17c become the Grooves 15 cut perpendicularly from secondary grooves 21.
  • the diameter of the first circle 17a is larger than the diameter of the second circle 17b and this in turn larger than that Diameter of the third circle 17c.
  • Each secondary groove 21 opens into an opening 19a, 19b, 19c.
  • These openings are also arranged along the circles 17a, 17b, 17c and lead perpendicular to the disk surface 4 through the dividing disks 3.9.
  • the openings 19a, 19b, 19c are circular bores.
  • the Diameter of the openings 19a along the first circle 17a are larger than the diameter of the openings 19b along the second circle 17b.
  • the diameters of the openings 19b along of the second circle are again larger than the diameter the openings 19c along the third circle 17c.
  • the second partial disk 9 is somewhat larger than the first partial disk 3.
  • the material to be introduced into the channel 34 passes through the annular gap 23 Fluid 24 in the grooves 15. Branched from the grooves 15 the fluid 24 into the secondary grooves 21. From the secondary grooves 21 the fluid 24 flows into the openings 19a, 19b, 19c.
  • a medium 20 (see FIG. 2), which has a channel 34 (see FIG. 2) flows through, in which the device 1 is installed, also flows through the openings 19a, 19b, 19c and mixed there with the fluid 24. Through the device 1 This results in a particularly good distribution of the fluid 24 across the cross section of the channel 34.
  • FIG. 4 shows a longitudinal section through a hybrid burner 30 for a gas turbine, not shown.
  • a fuel lance 31 is from a channel 34 for guiding combustion air surrounded concentrically.
  • the fuel lance 31 and the channel 34 form a diffusion burner 33.
  • the diffusion burner 33 in turn is from an annular channel-shaped premix burner 35 surround.
  • In the channel 34 of the diffusion burner 33 is one Device 1 installed according to Figure 1.
  • the fuel lance 31 opens into the central opening 14 of the device 1 annular gap-shaped attachment channel 25, the annular gap 23 fluid 24, here fuel 24, in particular natural gas or petroleum.
  • Combustion air flows through the ring channel 34. This passes through the device 1 via the openings 19a, 19b, 19c through.
  • FIG two devices 1A and 1B An arrangement 1C is shown in a longitudinal section in FIG two devices 1A and 1B are shown.
  • the first device 1A corresponds to the device symmetrical about an axis 40 1A.
  • Above the first device 1A is concentric to the axis 40 a second device 1B is arranged.
  • This has openings 19D, 19E, 19F with the openings 19A, 19B, 19C of the first device 1A are aligned.
  • the second device 1B secondary grooves 21B, which in turn with Communicate grooves 15B.
  • the grooves 15B are in a first contact side 7B of a first partial disk 3B of the second device 1B milled.
  • a second investment page 13B is through the Rear side of the first partial disk 3A of the first device 1A formed, that is, the first disc 3A of the first device 1A and a second partial disk 9B of the second device 1B are designed as a one-piece component.
  • the Grooves 15B lead radially from an inner edge 5B of the first graduated disc 3B straight through the first contact side 7B.
  • An annular channel shaped, directed along axis 40 and approach channel 25B arranged on the inner edge 5B communicates with grooves 15B.
  • the arrangement 1C can be supplied with two different fluids 24A, 24B.
  • the first device 1A becomes like FIG. 1 explains the first fluid 24A supplied via the attachment channel 25A.
  • the second device 1B becomes the second fluid 24B supplied via the approach channel 24B.
  • the first fluid 24A occurs out of the openings 19A, 19B, 19C and the second fluid 24B openings 19D, 19E, 19F.
  • Arrangement 1C e.g. in a burner 30 (see FIG. 2) evenly distributed different types of fuel or e.g. also fuel and water in an air duct at the same time be initiated.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
EP98121405A 1998-11-11 1998-11-11 Dispositif pour injecter un fluide dans un conduit Withdrawn EP1001216A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98121405A EP1001216A1 (fr) 1998-11-11 1998-11-11 Dispositif pour injecter un fluide dans un conduit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98121405A EP1001216A1 (fr) 1998-11-11 1998-11-11 Dispositif pour injecter un fluide dans un conduit

Publications (1)

Publication Number Publication Date
EP1001216A1 true EP1001216A1 (fr) 2000-05-17

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EP98121405A Withdrawn EP1001216A1 (fr) 1998-11-11 1998-11-11 Dispositif pour injecter un fluide dans un conduit

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EP (1) EP1001216A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2402655A1 (fr) 2010-07-02 2012-01-04 Siemens Aktiengesellschaft Module de brûleur
EP2407715A1 (fr) 2010-07-15 2012-01-18 Siemens Aktiengesellschaft Brûleur
EP2236931A3 (fr) * 2009-03-18 2014-08-06 General Electric Company Procédé et appareil pour délivrer un mélange combustible-air dans une turbine à gaz

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2500192A1 (de) * 1974-01-04 1975-07-17 Morganite Thermal Designs Ltd Druckgas-gespeister brenner
DE2739064A1 (de) * 1976-08-30 1978-03-09 Erb Verfahren und vorrichtung zur erzeugung eines nebels
EP0265617A2 (fr) * 1986-10-29 1988-05-04 Hewlett-Packard Company Micronébulisateur pour instruments analytiques
FR2619891A1 (fr) * 1987-09-02 1989-03-03 Gaz De France Tete de bruleur a gaz
EP0580683A1 (fr) 1991-04-25 1994-02-02 Siemens Ag Bruleur, en particulier pour turbines a gaz, pour la combustion peu polluante du gaz de houille et d'autres combustibles.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2500192A1 (de) * 1974-01-04 1975-07-17 Morganite Thermal Designs Ltd Druckgas-gespeister brenner
DE2739064A1 (de) * 1976-08-30 1978-03-09 Erb Verfahren und vorrichtung zur erzeugung eines nebels
EP0265617A2 (fr) * 1986-10-29 1988-05-04 Hewlett-Packard Company Micronébulisateur pour instruments analytiques
FR2619891A1 (fr) * 1987-09-02 1989-03-03 Gaz De France Tete de bruleur a gaz
EP0580683A1 (fr) 1991-04-25 1994-02-02 Siemens Ag Bruleur, en particulier pour turbines a gaz, pour la combustion peu polluante du gaz de houille et d'autres combustibles.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2236931A3 (fr) * 2009-03-18 2014-08-06 General Electric Company Procédé et appareil pour délivrer un mélange combustible-air dans une turbine à gaz
EP2402655A1 (fr) 2010-07-02 2012-01-04 Siemens Aktiengesellschaft Module de brûleur
WO2012000712A1 (fr) 2010-07-02 2012-01-05 Siemens Aktiengesellschaft Module brûleur
EP2407715A1 (fr) 2010-07-15 2012-01-18 Siemens Aktiengesellschaft Brûleur

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