EP0862018A1 - Montagestruktur eines Brenners in einer Gasleitung - Google Patents

Montagestruktur eines Brenners in einer Gasleitung Download PDF

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Publication number
EP0862018A1
EP0862018A1 EP98430005A EP98430005A EP0862018A1 EP 0862018 A1 EP0862018 A1 EP 0862018A1 EP 98430005 A EP98430005 A EP 98430005A EP 98430005 A EP98430005 A EP 98430005A EP 0862018 A1 EP0862018 A1 EP 0862018A1
Authority
EP
European Patent Office
Prior art keywords
burner
duct
head
outside
axis
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.)
Granted
Application number
EP98430005A
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English (en)
French (fr)
Other versions
EP0862018B1 (de
Inventor
Jean Claude Pillard
Jacques Pizant
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.)
Entreprise Generale de Chauffage Industriel Pillard SA
Original Assignee
Entreprise Generale de Chauffage Industriel Pillard SA
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 Entreprise Generale de Chauffage Industriel Pillard SA filed Critical Entreprise Generale de Chauffage Industriel Pillard SA
Publication of EP0862018A1 publication Critical patent/EP0862018A1/de
Application granted granted Critical
Publication of EP0862018B1 publication Critical patent/EP0862018B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/02—Structural details of mounting
    • F23C5/06—Provision for adjustment of burner position during operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/02—Structural details of mounting
    • 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
    • F23D14/24—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 at least one of the fluids being submitted to a swirling motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion simultaneously or alternately of gaseous or liquid or pulverulent fuel
    • F23D17/002—Burners for combustion simultaneously or alternately of gaseous or liquid or pulverulent fuel gaseous or liquid fuel

Definitions

  • the subject of the present invention is a device for mounting burners in a gas pipe in which it circulates and which require burners to operate in atmospheres containing little oxygen.
  • the technical sector of the invention is the field of manufacture and assembly of combustion apparatus using liquid and / or gaseous fuels.
  • burners in afterburner gas exhaust ducts arranged after the gas turbines and upstream of boilers of recovery of cogeneration units: such burners allow raise the temperature of the turbine gases to 1800 ° C by example and thereby increase the efficiency of said boilers. Moreover, they make it possible to operate said boilers with air fresh oxidizer when the turbines are stopped.
  • the sheaths in which the gases to be heated or reheated circulate are several meters wide and high, usually around 6 m, also knowing that the exhaust gases from the turbines are already about 500 ° C or more, to work on such burner heads, you must therefore stop the circulation of hot air and wait for the cooling of the assembly before being able to enter the sheath to access said burners.
  • the problem is thus to be able to intervene on heads of burners comprising at least one fuel injection pipe liquid, possibly also with gas injection pipes, placed along the same axis and inside conduits where a gas to be heated or reheated, in order to be able to repair, modify or simply clean said injection nozzles without having to stopping said circulation of gas in said conduit for too long.
  • a solution to the problem posed is a device for mounting a such a burner inside a gas pipe and comprising at least a fuel injection nozzle with a nose placed in the head of said burner along an axis parallel to that of said duct; following the invention said injection rod is located inside a sheath supply of air outside the duct to the burner head, is integral, which sheath is arranged transversely to the axis of said conduit; and said cane nose located at the end of a bent part thereof, is movable along said axis of the burner by relative to a guide orifice integral with said burner head which it is capable of being disengaged by displacement, from outside the duct and inside the barrel, the injection rod, which is then completely extractable to and from outside the duct.
  • the entire head of the burner and its air supply sleeve are extractable also transversely and out of the duct from outside of this, in particular thanks to at least one hollow post, vertical or inclined and preferably less than 45 ° relative to the vertical; this post is disposed in said duct, suspended from its upper part and supporting horizontal raceways on which are laid support and guide means of said burner head; said vertical or inclined hollow support pole is thus cooled by air circulation inside its own volume by pulling effect natural or by forced ventilation.
  • the invention also comprises at least two flaps arranged on the side on the other side of the burner head, tilting around transverse axes audit led and whose shapes, compatible with those inside the duct and the outer ones of the burner head, ensure in position closed the reduction of the gas passage section through at least that of the burner head; preferably said flaps and their axes are also hollow and connected to a vertical or inclined hollow duct, as the vertical or inclined hollow post supporting said heads burners, to also ensure circulation cooling of internal air by natural draft effect or by ventilation.
  • Such flaps make it possible to reduce the cross section of the gases to be heated especially when it is fresh combustion air, and not afterburner gases from gas turbines when these are by example stopped.
  • burner mounting devices placed inside a gas pipe such as those exhaust from gas turbines: these devices solve the problem installed without having the disadvantages of burners known to date, since on the one hand they make it possible to extract the injection rod (s) from liquid fuel from outside the duct without having to exit the entire burner and therefore practically without stopping the circulation of gas to be heated, and on the other hand to extract the entire the burner head itself quickly enough without having to wait for the sheath cooling; this limits the downtime of installations, especially those of post-combustion cogeneration gas turbines for which production losses are then the more important the longer the stop; following this invention these downtimes are reduced to the absolute minimum by making such easily accessible and removable burners which presents a very important interest in the development of such units in all industries.
  • the present invention can be adapted to all types of burners such as those described by way of exemplary embodiment in the figures below; the design of these burners is taken from that described in patent FR2570473 filed in 1984 by the same applicant that the present invention the company EGCI PILLARD and describing parallel flow gas burners with a rosette and a means of hanging flames.
  • Figure 1 is a cross-sectional view of a gas circulation in which a burner mounted according to the device of the present invention.
  • Figure 2 is an enlarged view of the burner of Figure 1 following the same axis.
  • FIG. 3 is a top view in partial section of the burner Figure 2.
  • Figure 4 is a sectional view along IV, IV 'of the gas pipe of figure 1.
  • Figure 5 is a sectional view along V, V 'of the same conduit Figure 1 gas.
  • Figures 4 and 5 in fact show a section of the gas conduit 1 27 flowing inside thereof and which is of course connected on these inlet and outlet faces to a sheath which can be connected upstream to a gas turbine and downstream to a recovery boiler;
  • Figure 1 is a view from the upstream part with a burner head 2 1 in the operating position inside the duct 1 and a second head 2 2 not shown since completely extracted from the duct with the installation of a false door 7 2 or guillotine closing the extraction passage section of said head 2 2 and making it possible to operate the installation without this burner 2 2 .
  • a vertical or inclined hollow post 20 is placed in the duct and suspended from its upper part: this vertical post 1 can expand downwards by crossing the lower part of the sheath 1 thanks to a cable gland 20 2 hot gases and thus leaving free the expansion of said post 20 which can be isolated and internally cooled by an outside air circulation 21 1 in natural draft or by ventilation.
  • Said vertical post 20 1 supports the horizontal raceways 22 on which are placed support and guide means 23 such as one or more rollers disposed at the bottom of said head 2 of the burner and having a corresponding shape and cooperating with that of the selected raceways 22.
  • the latter can bear and be maintained on plates integral with the post 20 while remaining free to expand longitudinally relative to these plates; optionally these raceways, preferably in number 2, can also consist of hollow support tubes, insulated like the support post 20 and cooled by internal air circulation.
  • the burners used comprise in a known manner at least a fuel injection nozzle 3, the nose 5 of which is disposed in the head 2 of said burner along an axis XX 'parallel to that of said line 1: according to the invention, said injection pipe 3 is located at the inside of a sheath 6 for supplying air outside the duct 1, the head 2 of the burner with which it is integral; said sheath is arranged along an axis YY 'transverse to that of said conduit 1; and said nose 5 of the rod 3, located at the end of a bent part 4 thereof, is movable along the axis XX 'relative to a guide hole 14 integral with said burner head 2 from which it is capable of being released by displacement of the injection rod 3, from outside the duct 1 and inside the sleeve 6.
  • the injection rod is associated for example with a rotating shaft 8 for maneuvering from the outside of the duct 1, located in the sheath 6, parallel to the rod 3 and carrying at least at its distal end a gear 9 2 which comes to cooperate with a rack 10; the latter being located at the end 16 of the sleeve 6 on the side of the head 2 of the burner, the rotation of said gear 9 by the operating shaft 8 causes its movement and that of the injection rod 3 along this rack 10 for engaging and disengaging the nose 5 of the rod 3 relative to the head 2 of the burner.
  • the injection pipe is shown in Figure 3 in operating position in solid lines 4, 3a and extractability position in dotted lines 4 b, 3 b.
  • Another gear 9 1 or any end piece making it possible to engage an operating key such as a square or a hexagon, is located at the other end of the shaft 8 remaining outside the conduit 1 and makes it possible to ensure the setting in rotation of this shaft 8.
  • said rod is integral with a centering guide 11 lateral keeping it at a constant distance along the walls of the sheath 6 which are parallel; this guide 11 or the bent part 4 of the rod 3 can be a support on a stop 30 disposed along said walls in order to maintain the longitudinal position of said rod 3 inside the sheath 6, until the nose 5 injection located at the end of the bent part 4 of the injection rod 3 is guided and properly positioned in the orifice 14 of the injection head which in the case of the examples of the figures is a single central orifice arranged along the axis XX 'of the burner.
  • Said burner head 2 also comprises a shutter 16 of the end of the sheath 6 opening laterally along the axis XX 'and downstream of the gas circulation 27 in a shell 16 1 itself closed by a plate stabilizer 13 comprising orifices, such as tangential slots or holes parallel to the axis XX ′ or inclined, for the outlet of external air supplied by said sheath 6, and said orifice 14 for guiding the injection nose 5.
  • a external cylinder 12 surrounds at least said ferrule 16 1 and the stabilizing plate 13.
  • the surface of the useful gas passage section 27 inside of said cylinder 12 is equal to 20 to 50% of the useful cross-sectional area of the duct 1 in which said burner is located, said percentage being in fact to be considered in proportion to gas in stoichiometric air.
  • said burner head 2 comprises blades 15 for rotating the gas, fixed around the ferrule 16 1 for air outlet 16 at the end of the sleeve 6, and injection nozzles 17 for gaseous fuel disposed through and between said blades 15 along axes parallel to that of the duct 1, or convergent or divergent.
  • Said inclined blades 15 may be surrounded by a cylindrical hoop 28 delimiting a peripheral ring 31 with the outer cylinder 12.
  • This said outer cylinder 12 is an air director which can be possibly convergent and diverge respectively at its upstream orifice 12 1 and its downstream orifice 12 2 .
  • Said injection lances 17 of gaseous fuels passing through said inclined fins 15 inject the gas downstream from the plane of the front face of the stabilizing plate 13.
  • the assembly constituted by said inclined blades 15, forming a rosette, constitute with said stabilizing plate 13 the flame catcher as described in the previously cited patent FR 2570473.
  • Said gas fuel lances 17 may be in number any represented here in number of 6 and come to be connected on at least one gas manifold 18, which can be toroidal in shape revolution as shown in Figure 3 and thus constituted upstream converging openings of said cylinder 12; said collector 18 is connected to the outside by a fuel gas supply tube 19.
  • the axis YY 'of the sleeve 6 is arranged perpendicular to the axis XX 'of the burner and the duct 1 but it could be tilted at any other angle transverse, preferably between 45 and 90 ° relative to the axis of said conduit.
  • the invention also comprises at least two flaps 24 arranged on either side of the burner head 2, tilting around axes 25 transverse to that of said conduit 1 and whose shapes, compatible with that inside the duct 1 and that outside the head 2 of the burner, ensure in the closed position the reduction of the section of passage of the gas through at least that of the head 1 of the burner.
  • said flaps 24 and their axes 25 are hollow and connected to a vertical pipe 26 also hollow; all of these parts internal hollow which can also be connected to the hollow post vertical 20 support for the burner heads 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Gas Burners (AREA)
  • Control Of Combustion (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
EP98430005A 1997-02-27 1998-02-20 Vorrichtung zur Montage eines Brenners in einer Gasleitung Expired - Lifetime EP0862018B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9702586 1997-02-27
FR9702586A FR2760071B1 (fr) 1997-02-27 1997-02-27 Dispositif de montage de bruleurs dans un conduit de gaz a chauffer

Publications (2)

Publication Number Publication Date
EP0862018A1 true EP0862018A1 (de) 1998-09-02
EP0862018B1 EP0862018B1 (de) 2000-11-29

Family

ID=9504415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98430005A Expired - Lifetime EP0862018B1 (de) 1997-02-27 1998-02-20 Vorrichtung zur Montage eines Brenners in einer Gasleitung

Country Status (7)

Country Link
US (1) US5984666A (de)
EP (1) EP0862018B1 (de)
KR (1) KR100360521B1 (de)
AT (1) ATE197843T1 (de)
DE (1) DE69800407T2 (de)
ES (1) ES2152741T3 (de)
FR (1) FR2760071B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2797321B1 (fr) * 1999-08-04 2001-10-26 Pillard Chauffage Bruleurs a recirculation de fumees et a faible emission d'oxydes d'azote et rechauffeurs de gaz comportant de tels bruleurs
US9605660B2 (en) 2011-05-06 2017-03-28 Xiangtan Liyuan Electric Tooling Co., Ltd. Apparatus for heating working fluid of gas turbine-solar power generation system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861859A (en) * 1972-07-31 1975-01-21 Sherwood William L Cooling of rotary furnace shell burner pipes and method
FR2285574A1 (fr) * 1974-09-20 1976-04-16 Zink Co John Bruleur pour montage dans des conduits de gaz d'echappement
FR2570473A1 (fr) * 1984-09-19 1986-03-21 Pillard Chauffage Perfectionnements aux bruleurs a gaz a ecoulement parallele comportant une rosace et un moyeu d'accrochage de flamme concernant les bruleurs a gaz et l'alimentation independante en air central

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1215653A (en) * 1915-06-19 1917-02-13 Stephen H Hale Gas mixer and burner.
US2512319A (en) * 1947-12-01 1950-06-20 Nat Airoil Burner Company Inc Combustion apparatus for furnaces
US2728649A (en) * 1951-09-08 1955-12-27 Atomite Company Cold fogging device for gas mains
US3169573A (en) * 1962-02-20 1965-02-16 Hidaka Manyoshi Vertical adjustment device for burners of gas-cookers
US3209810A (en) * 1962-04-24 1965-10-05 Exxon Research Engineering Co Side-entry fluid fuel injection system for furnaces
US3498323A (en) * 1967-11-09 1970-03-03 Sun Oil Co Retractable nozzle
SE397576C (sv) * 1976-03-12 1982-07-05 Petrokraft Ing Ab Anordning vid brennare, serskilt rotationsbrennare
US4082499A (en) * 1976-11-12 1978-04-04 Allis-Chalmers Corporation Multipurpose kiln shell gas burner
US4479612A (en) * 1982-09-28 1984-10-30 Umbach Newell L Retractable glycol spray nozzle
DE3928384A1 (de) * 1989-08-28 1991-03-21 Viessmann Hans Geblaesebrenner fuer heizkessel mit abgasrueckfuehrung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861859A (en) * 1972-07-31 1975-01-21 Sherwood William L Cooling of rotary furnace shell burner pipes and method
FR2285574A1 (fr) * 1974-09-20 1976-04-16 Zink Co John Bruleur pour montage dans des conduits de gaz d'echappement
FR2570473A1 (fr) * 1984-09-19 1986-03-21 Pillard Chauffage Perfectionnements aux bruleurs a gaz a ecoulement parallele comportant une rosace et un moyeu d'accrochage de flamme concernant les bruleurs a gaz et l'alimentation independante en air central

Also Published As

Publication number Publication date
DE69800407D1 (de) 2001-01-04
US5984666A (en) 1999-11-16
FR2760071A1 (fr) 1998-08-28
ATE197843T1 (de) 2000-12-15
DE69800407T2 (de) 2001-05-23
KR19980071837A (ko) 1998-10-26
EP0862018B1 (de) 2000-11-29
FR2760071B1 (fr) 1999-05-28
ES2152741T3 (es) 2001-02-01
KR100360521B1 (ko) 2003-02-25

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