EP0513414B1 - Dispositif à tuyères pour la commande d'un courant de gaz - Google Patents

Dispositif à tuyères pour la commande d'un courant de gaz Download PDF

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Publication number
EP0513414B1
EP0513414B1 EP19910107956 EP91107956A EP0513414B1 EP 0513414 B1 EP0513414 B1 EP 0513414B1 EP 19910107956 EP19910107956 EP 19910107956 EP 91107956 A EP91107956 A EP 91107956A EP 0513414 B1 EP0513414 B1 EP 0513414B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
gas
inner nozzle
flow
conical
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.)
Expired - Lifetime
Application number
EP19910107956
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German (de)
English (en)
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EP0513414A1 (fr
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.)
HOTWORK INTERNATIONAL SA
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HOTWORK INTERNATIONAL 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 HOTWORK INTERNATIONAL SA filed Critical HOTWORK INTERNATIONAL SA
Priority to ES91107956T priority Critical patent/ES2094769T3/es
Priority to EP19910107956 priority patent/EP0513414B1/fr
Priority to DE59108409T priority patent/DE59108409D1/de
Publication of EP0513414A1 publication Critical patent/EP0513414A1/fr
Application granted granted Critical
Publication of EP0513414B1 publication Critical patent/EP0513414B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • 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

Definitions

  • the invention relates to a gas nozzle according to the preamble of patent claim 1.
  • Such a gas nozzle - but for use in an all gas burner - is known from DE-B-1 959 677. This known nozzle enables the all gas burner to be operated both with town gas and with natural gas or liquid gas.
  • a burner for a glass melting furnace with a control cone located in front of the mouth of the burner gas tube is known from DE 32 02 105 A1.
  • the invention has for its object to provide a gas nozzle for controlling a gas flow, which enables satisfactory control with relatively simple means, the total gas flow exiting should be variable in terms of throughput and flow rate.
  • nozzle tube 1 and 2 consists of a nozzle tube 1, to which on the one hand a laterally attached feed pipe 2 is connected for introducing a gas flow into the nozzle pipe 1 and on the other hand has a nozzle-like head part 3, at which the gas flow exits the burner.
  • the nozzle tube 1 is inserted into a cylindrical receptacle la, which can be screwed to a carrier (not shown) with a mounting flange 1b and has an end flange 1c at one end and a further mounting flange 1d at the other end, with which the nozzle tube 1 can also be connected to a carrier (not shown) Firing system can be used.
  • a gear block 4 with two adjusting wheels 5, 6 which can be operated manually independently of one another is attached to the nozzle tube 1 on the end face adjacent to the feed tube 2, the function of which is described in more detail below.
  • the setting wheels 5, 6 are only shown in FIG. 1, while they are removed from the gear block 4 in FIG. 2.
  • the nozzle tube 1 consists in its central section of two tube sections 7, 8 which are screwed together by means of a thread 8a.
  • the gas introduced into the nozzle pipe 1 via the feed pipe 2 flows from left to right in the illustration according to FIG. 2, which is illustrated by arrows.
  • the inside width of the pipe section 8 tapers in the direction of flow to form a conical inner surface 9 which merges with the head part 3, the inside width of which is smaller than the inside width of the pipe section 7.
  • the pipe section 8 thus forms an outer nozzle, which is also referred to below as the outer nozzle 8.
  • first inner nozzle 11 which is referred to below as the first inner nozzle.
  • This first inner nozzle is arranged coaxially to the nozzle tube 1 and placed on the end of a tubular push rod 12.
  • the push rod 12 also runs coaxially to the tube 1 and is axially adjustable in the gear block 4.
  • the push rod 12 can be adjusted axially by actuating the adjusting wheel 5 on the transmission block 4, whereby the first inner nozzle 11 is also axially adjusted relative to the outer nozzle 8.
  • the first inner nozzle 11 attached to the push rod 12 is divided on its outer surface into a conical retaining ring 13 with gas inlet openings 14, 15, a cylindrical surface section 16, a first conical surface section 17 with increasing diameter in the flow direction and a second conical surface section 18 with decreasing diameter in the flow direction, which is why the surface sections 17 and 18 together form a double cone.
  • the conical surface 9 of the outer nozzle 8 and the second conical surface section 18 of the inner nozzle 11 have approximately the same opening angle, so that their surface lines in the sectional planes receiving the central axis each run approximately parallel to one another.
  • the second conical section 18 of the inner nozzle 11 thus forms an annular gap 19 with the conical inner surface 9 of the outer nozzle 8.
  • the inner surface of the inner nozzle 11 is divided into a first conical section 20 with a decreasing diameter in the flow direction, a cylindrical section 21 and a second conical section 22 which widens in the flow direction and forms a gas outlet opening 23 at the end.
  • both the gas throughput, ie the flow quantities per unit of time, and the flow velocities at the end of the annular gap 19 or at the outlet opening 23 of the first inner nozzle 11 change in absolute amounts and in the ratio of external flow to internal flow in the two partial flows.
  • the width of the annular gap 19 changes when the inner nozzle 11 is axially adjusted, but it remains with each adjustment of the inner nozzle 11 relative to the outer nozzle 8 because of the equality of the opening angles of the conical surface section 18 of the inner nozzle 11 and the conical surface 9 of the Outer nozzle 8 constant over the axial length of the annular gap 19.
  • the conical surface of the second conical surface section 18 of the inner nozzle 11 and the conical surface 9 of the outer nozzle 8 can have different opening angles, so that the mutually assigned surface lines of these surfaces form an acute angle between them in the respective cutting planes.
  • the width of the annular gap 19 increases or decreases over its axial length, as a result of which the flow conditions in the partial flows flowing through and flowing around the inner nozzle 11 can also be influenced. Similar effects can be achieved if the surfaces 9 and / or 18 are only approximately conical or further deviate from the conical shape.
  • a second inner nozzle 24 is provided within the pipe section forming the outer nozzle 8 in the flow path behind the first inner nozzle 11. This is attached to an additional push rod 25, which in turn axially passes through the first inner nozzle 11 and its tubular push rod 12 and is also axially adjustable in the gear block 4.
  • the second push rod 25 and with it the second inner nozzle 24 attached thereto can be adjusted axially relative to the first push rod 12 and the first inner nozzle 11 attached thereto by means of the second adjusting wheel 6.
  • the arrangement is selected so that at least when the two inner nozzles 11, 24 are set at the shortest possible mutual distance, the second inner nozzle 24 partially projects into the space formed by the conical inner surface 22 of the first inner nozzle 11.
  • the second inner nozzle 24 also has a retaining ring 26 provided with gas inlet openings 27, 28 and then has a first conical section 28 with a diameter increasing in the flow direction and a second conical section 29 with a diameter decreasing in the flow direction on its outer surface.
  • the surface sections 28 and 29 of the second inner nozzle 24 thus also form a double cone.
  • the inner surface of the second inner nozzle 24 has a conical section 30 with a diameter that increases in the direction of flow.
  • the conical surface section 29 of the second inner nozzle 24 forms with the conical inner surface 9 of the outer nozzle 8 a second annular gap 31 for the aforementioned external flow of the total gas flow, while the outer conical surface section 35 of the second inner nozzle 24 forms an annular gap 32 for the internal flow of the total gas flow with the inner conical surface section 22 of the first inner nozzle.
  • the second inner nozzle 24 there is a fixed nozzle needle 33, which forms an annular gap 34 with the conical inner surface 30 of the second inner nozzle 24.
  • the nozzle needle 34 is designed as a double cone.
  • other geometric shapes can also be assigned to change the shape of the flame formed on the head part 3 of the burner.
  • the widths of the annular gaps 31, 32 and 34 change at the same time.
  • the axial setting of the first and second inner nozzles 11, 24 can be carried out and adapted to one another, that a high gas outlet velocity is achieved at the head part 3 of the burner with unchanged fuel throughput, as a result of which the mixing pulse between the fuel stream emerging from the burner and an air stream supplied outside the burner is improved with the aim of intensifying the combustion and heat transfer in one equipped with the burner according to the invention Furnace system.
  • the gas outlet pulse at the head part 3 of the burner can be kept at the same level by correspondingly changing the cross-sections formed in the annular gaps 9, 31, 32 and 34 by appropriate axial adjustment of the two inner nozzles 11, 24, whereby at Load changes a stable fuel-combustion air mixture formation is maintained.
  • This is a great advantage in terms of control technology in all areas of combustion technology.
  • electric motors can also be provided, for example housed in the gear block 4 or act on gears, which can be provided instead of the adjusting wheels 5, 6.
  • the electric motors can be controlled automatically via measuring elements in the burner or combustion chamber.
  • the adjustment mechanisms for the first and second inner nozzles 11, 24 also enable differential speeds of the gas flows in the individual annular gap cross sections. A clean flame burnout can be brought about, which leads to improved heat utilization and reduced NO x pollutant formation.
  • the burner described above is particularly suitable for use in glass melting furnaces and other types of industrial furnaces, in both subport and side port systems.
  • only one of these inner nozzles can be provided instead of two inner nozzles 11, 24, it also being possible to dispense with the nozzle needle 33. If only the inner nozzle 11 is provided, the nozzle needle 33 can also be inserted into the inner nozzle 11 with a corresponding adaptation of its shape.
  • an axial adjustability can also be provided instead of a fixed bearing. This is particularly advantageous if only one inner nozzle 11 or 24 is provided in connection with a nozzle needle 33 in the outer nozzle 8.
  • a change in the partial flow flowing through the inner nozzle 11 or 24 can also be effected instead of by axially adjusting the inner nozzle one or more valve flaps which are arranged to be adjustable in the flow path and which change the flow cross section are brought about.
  • the nozzle device shown in FIGS. 2 and 3 and their above-described modifications can be used advantageously not only in gas burners, but also in blowers and other devices in which the throughput and / or the exit speed of a uniform gas flow are to be controllable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Claims (9)

  1. Buse à gaz pour un four de fusion de verre, comportant
    - une buse extérieure (8);
    - une buse intérieure (24) prévue dans la buse extérieure (8), buse intérieure (24) disposée dans le courant de gaz introduit dans la buse extérieure (8), de manière à être partiellement traversée par son écoulement et partiellement contournée par son écoulement, où
    - la section transversale (31) correspondant à l'écoulement de contournement est modifiable par un déplacement de la buse intérieure (24) dans la buse extérieure (8),
       caractérisée en ce que
       - la section transversale (19) du courant de contournement est en plus modifiable au moyen d'une deuxième buse intérieure (11), et en ce que les deux buses intérieures (24; 11) sont réglables indépendamment l'une de l'autre.
  2. Buse à gaz selon la revendication 1, caractérisée en ce que la modification des courants partiels s'effectue par un réglage axial des buses intérieures (11, 24) par rapport à la buse extérieure (8).
  3. Buse à gaz selon la revendication 1 ou 2, caractérisée en ce que la buse extérieure (8) et/ou les buses intérieures (11, 24) sont coniques.
  4. Buse à gaz selon la revendication 3, caractérisée en ce que l'angle d'ouverture des faces coniques de la buse extérieure (8) et d'une buse intérieure (11, 24) sont égaux.
  5. Buse à gaz selon l'une des revendications précédentes, caractérisée en ce qu'une buse intérieure (11, 24) constitue un cône double.
  6. Buse à gaz selon l'une des revendications précédentes, caractérisée en ce qu'une buse intérieure (11, 24) est réglable axialement dans la buse extérieure (8) au moyen d'une tige de manoeuvre (12, 25), et la tige de manoeuvre (12, 25) présente un dispositif de réglage (5, 6).
  7. Buse à gaz selon la revendication 1, caractérisée en ce que, au moins lors du réglage des deux buses intérieures (11, 24), pour obtenir le plus petit espacement mutuel possible, la deuxième buse intérieure (24) pénètre dans l'espace intérieur de la première buse intérieure (11).
  8. Buse à gaz selon l'une des revendications précédentes, caractérisée en ce que dans la buse intérieure (24) est disposée axialement une aiguille à buse (33), et il est prévu un dispositif (6, 25) destiné à assurer le réglage relatif entre la buse intérieure (24) et l'aiguille à buse (33).
  9. Buse à gaz selon l'une des revendications précédentes, caractérisée en ce qu'elle est utilisée dans un brûleur à gaz, pour assurer la régulation du débit de combustible.
EP19910107956 1991-05-16 1991-05-16 Dispositif à tuyères pour la commande d'un courant de gaz Expired - Lifetime EP0513414B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES91107956T ES2094769T3 (es) 1991-05-16 1991-05-16 Dispositivo de toberas para el control de una corriente gaseosa.
EP19910107956 EP0513414B1 (fr) 1991-05-16 1991-05-16 Dispositif à tuyères pour la commande d'un courant de gaz
DE59108409T DE59108409D1 (de) 1991-05-16 1991-05-16 Düsenvorrichtung zur Steuerung eines Gasstromes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19910107956 EP0513414B1 (fr) 1991-05-16 1991-05-16 Dispositif à tuyères pour la commande d'un courant de gaz

Publications (2)

Publication Number Publication Date
EP0513414A1 EP0513414A1 (fr) 1992-11-19
EP0513414B1 true EP0513414B1 (fr) 1996-12-11

Family

ID=8206729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910107956 Expired - Lifetime EP0513414B1 (fr) 1991-05-16 1991-05-16 Dispositif à tuyères pour la commande d'un courant de gaz

Country Status (3)

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EP (1) EP0513414B1 (fr)
DE (1) DE59108409D1 (fr)
ES (1) ES2094769T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005095857A1 (fr) 2004-03-23 2005-10-13 Software & Technologie Glas Gmbh (Stg) Injecteur de gaz
DE102018125872A1 (de) 2018-10-18 2020-04-23 Flammatec, Spol. S R.O. Brenngasinjektor, System aus keramischem Wandungselement mit einer keramischen Injektoreinsatzöffnung zum Einsatz eines Brenngasinjektors und Industrieofens

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5304256A (en) * 1991-12-09 1994-04-19 Esab Welding Products, Inc. Scarfing method
DE4447605C2 (de) † 1994-08-30 1996-12-19 Hotwork Int Sa Industrieofen mit einer U-Flammenwanne
US5725367A (en) * 1994-12-30 1998-03-10 Combustion Tec, Inc. Method and apparatus for dispersing fuel and oxidant from a burner
US5545031A (en) * 1994-12-30 1996-08-13 Combustion Tec, Inc. Method and apparatus for injecting fuel and oxidant into a combustion burner
AT402963B (de) * 1995-09-07 1997-10-27 Voest Alpine Ind Anlagen Verfahren zum verbrennen von brennstoff
DE10005256B4 (de) * 2000-02-05 2010-04-29 Elster Gmbh Brenner für gasförmige oder flüssige Brennstoffe
CN107076417B (zh) * 2014-08-15 2019-11-29 日蚀公司 双出口燃烧器及方法
CN112696672B (zh) * 2020-12-25 2022-04-15 清华大学 燃烧管和具有该燃烧管的低氮燃烧器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1087714A (fr) * 1953-11-23 1955-02-28 Procédé et dispositif de pulvérisation
DE1959677B1 (de) * 1969-11-28 1971-05-06 Wiest Fa Richard Düse für allgasbrenner
DE3202105C2 (de) * 1982-01-23 1985-08-08 Karl-Heinz 5600 Wuppertal Frickel Brenner, insbesondere für Glasschmelzöfen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005095857A1 (fr) 2004-03-23 2005-10-13 Software & Technologie Glas Gmbh (Stg) Injecteur de gaz
DE102018125872A1 (de) 2018-10-18 2020-04-23 Flammatec, Spol. S R.O. Brenngasinjektor, System aus keramischem Wandungselement mit einer keramischen Injektoreinsatzöffnung zum Einsatz eines Brenngasinjektors und Industrieofens

Also Published As

Publication number Publication date
ES2094769T3 (es) 1997-02-01
EP0513414A1 (fr) 1992-11-19
DE59108409D1 (de) 1997-01-23

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