DE1551828A1 - Burner for separate supply of gas and air - Google Patents

Description

.Burner for separate supply of \ iaa and air

The invention relates to a burner for the separate supply of gas and air with a controllable mixing device in an open chamber. In this chamber there are conical and cylindrical guide channels, which are arranged concentrically, one inside the other, in such a way that the flows are directed against one another in order to produce an intensive mixing effect for the separately supplied gas and air quantities, the passages of the guide channels are also known to change in a controlled manner and for this purpose to be arranged displaceably relative to one another in the axial direction.

In the known burners there is an inner cone in an open chamber, which extends into the outlet openings of the open Chamber is arranged displaceably in the axial direction. The outer wall of the inner cone forms with a conical outer jacket the inner passage for part of the fuel gas mixture and is also arranged so that it can be moved in the axial direction, around the inflow of the other part of the mixture into the open chamber to regulate.

Due to the design, the known burners can only be used in To a limited extent, a regulated and intensive mixture of the parts of the body to. By adjusting the conical walls in

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In the axial direction, speeds of the mixed parts arise that cannot be controlled. As a * "oi ^ e, ähii as a result of uncontrolled speeds of batch £ whose yiischung parts incomplete is what the Kbmmenwirkuniren is the brer.ners Ut eraus afterwards.

The invention is based on the object, with separate transfer of the parts of the mixture, a fuel gas mixture so that the otr-imitation speeds and directions of gas and air are correct. Elbar to master that an extensive mixing effect is guaranteed. The answer to this task is seen in particular in that an axially displaceable inner cone, known per se, is designed as a closure piece for the open chamber and has a conical open channel that forms the inner passage, the outer wall of which delimits the outer passage to the canal and regulates it with its Outer edge slides on the outer wall of the chamber.

The subject of the invention is shown schematically in section on the drawing by means of an exemplary embodiment.

The burner shown in the drawing is particularly suitable for use in a blast furnace heater. Readers Burner can be used in the same way in other combustion systems.

As can be seen from the drawing, it is located in an open Chamber 1 an inner cone 2, which is axially displaceable in a known manner is arranged.

ü lies within the meaning of the invention, the inner cone 2 as a Verschiußatüok the open chamber 1 to train. To this end, wise

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BATH ORIGINAL

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the ofi'ene i.aranier. ± at its exit end as well as the inner koiius 2 ζ us a..Lie ην / ir ken du Jichtungsitze ' -j .

On their Ln-Je der verccr: iiei3D ^ reii ive:.:]. Ierv, h.n'aung 4- opposite the "- / icntunjssitz " j there is oin ünschiuiistutzen b for the ^ ufiüirunj of a G-eniengteileb aes Brenn ^ as-Orenisches. Uem Aiiscr.iuastut ^ en -j diainexrai ^ egenibei'gend is curcL the Ka.:jner-•< Situuiinü.Uiir 4 "in ij-nccii ^ u,; cut υ iür the other (Jemtn ^ teix i.mdurch -, i-i'L-iirt, cer mouthed into an inside r Ί This Innenichr 7 is as -.rennw & nd ^ v ^ iüchen ^ as-iemisoi. from ge & Gälte ..

^ s lj.egt, <eitfe;rx; ixi Il ₁ uinne cer jeliffind ", a'en Inneruiünus 2 r.it ainem iconxjchen oifenen iieiticanax ο zu verseher., atr ütr. ^ ustritx c.eb innunduxci- ^ anrtj Liideü. ^ ie Au ^ eii ". ndüiig aiests \ tLor: isclien ^! '-üeiticanais 6- Ltgienzi; üeii Auisenäurch ^ c.ng in aex- v.ersui.iitSbaren KiUiimer 1« xier Aiilienranc Iu of the conical duct b slides on " äex Inneuwaii . at j 11 of the various iYr.r. \ r: erwana.un_ ~ 1 ..

At the same time as the flow path, the outer edge 10 of the kenic outer wall 9 connected to the inner cone passes over the fixed sealing seat J> a ::: exit of the o..i'enen Ksi animal 1. Here, the outer diameter changes between the outer wall 9 and the outer rim 11, so that every position of the inner icon 2 lying within the stroke limits is reached and thus the flow rate can be adjusted according to the operating conditions with constant pulp gas flow. On the basis of the invention, the burner receives a control characteristic at the critical point of each burner, namely at the primary one

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Burning zone, where the mixed parts of the fuel gas mixture are burned will.

The conical guide channel 8 has a tubular extension 12 which extends on the between the outer passage and the inner passage an inner tube forming a partition is guided telescopically. A slides on the inner wall of the inner tube 7 Pipe slide 13, which during the opening path through its Axialverscniebungen the inner passage between the outer wall of and the inner wall 20 of the conical Leitüanals 8 changed. This also regulates and controls the speed of the mixture that is fed in from the inside of the fuel gas mixture.

Those from the outer passage axially and from the inner passage Gases flowing out at an angle form eddies due to their different flow directions, which cause intimate mixing. These vortex formations and thus the k-ic effects become further increased by the fact that the speeds of the kisch gases are precisely regulated by the axial displacements of the inner cone 2 with the conical guide channel 8 and also through the axial displacements of the pipe valve 13. In this way you have it in your hand, by regulating the currents as far as possible To achieve mixing of the mixture parts from the fuel gas mixture.

For its axial displacements, the inner cone 2 is on a spindle extending through the inner tube 7 of the double tube 14 attached and connected to a drive 15 known per se. The pipe slide 13 has a linkage 16 that extends through the Inner tube 7 extends, also with the drive 15 connection. However, it is within the scope of the invention that the linkage 16

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be adjusted independently of the drive 15 in the axial direction 'Can, hereby it is achieved that the pipe slide 13 the Internal passage independent of the position of the inner cone 2 regulates.

The construction of the burner in accordance with the invention leaves a simple one Cooling of the ieile too. For this purpose the walls 11 the open chamber 1 and the wall 17 of the inner cone 2 are hollow designed. The cavities of these walls can be in

The simplest way to switch on in the umlaut "of a coolant. A spiral-shaped guide wall 19 extends through the cavity 18 of the chamber wall 4. that the cooling liquid flows through the cavity 18 with a high speed. For the flow of the coolant in the Hollow wall 1γ of the inner cone 2 is used by the double tube 14 »which eten inlet and outlet canal for the Künlwaaser Dilden.

Due to the fact that the inner cone c is moved in its lower position, this inner cone 2 serves as a closing body between the burner chamber 1, 3-20 and the combustion chamber, in this case for example the heater, whereby the entire burner also serves as a shut-off device can be viewed.

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Claims (1)

File 67-8-78 Patents 1 burner for separate supply of gas and air with a "controllable mixing device" an open one Chamber in which conical and cylindrical guide channels are arranged concentrically one inside the other, the flow-changing passages have and are arranged to be displaceable relative to one another in the axial direction, since it is marked that a known axially displaceable inner cone (2) as a connecting piece of the open Chamber (l) is designed and an inner passage / forming has conical guide channel (8), the outer wall (9) of which the outer passage adjustable limited and with its outer rim (1υ) on the Inner wall Ul) of the chamber (IJ slides. 2 burner according to claim 1, daduron marked, that the conical guide channel (8) of the inner passage is guided telescopically with a tubular extension (12) on a standing inner tube (7), which has a partition between the outer and inner passageways. 3 · Burner according to claim 1 and 2, characterized marked, daü on the inner wall of the inner tube (7) the inner passage regulating pipe slide (13) is guided. 4. Burner according to claims 1 to 3, characterized in that the tubular slide (13) can be adjusted independently to its axial drive (15) common to the inner cone (2). 009810/0830 Acts 67-8-78
ScU / Lz 5 β burner according to claim. 1 to 4, characterized in that that the Yfandung (17) of the inner cone (2) as well as the »andung (11) of the open chamber (1) designed to be hollow and circulated a coolant can be switched on 6o burner according to claims 1 to 5 »characterized in that the inner cone 8 (2) in its lower end position serves as a closing body between the burner space (1, 3- 2Q) and the burner chamber The patent attorney ALBERT
Dipl, 009810/0830