DE6946079U - BURNERS FOR PREFERRED PUSTIC FUELS - Google Patents

Description

L. & C, StoimaUllor G.a.b.H. 527 GiuLHcersbach, November 20, ^ 9

Bth / Eo

Utility model - registration

"Burners for preferred white etaubföraige fuels".

The invention relates to a burner, preferably Ruad burner, for dusty fuel or the like. In which the combustion air and the fuel are fixed Leitschaufelsysteae have been performed and the »it is provided with a variable swirl effect.

When using burners with guide fittings in furnaces, is it possible to adjust the swirl effect? voa crucial. The known KonatruktIonen have an adjustable swirl body, through which all the secondary air is guided in the retracted position and thus the bit _e , the greatest swirl effect in eggs. FiTarvngsschacht enters. At the end of this guide line, the rod emerging axially from a ring surface becomes the result, the ignition taking place in the corner of the burner. When the swirl body is withdrawn, a circular area is released through which part of the secondary air flows without being deflected. The mixture of this air stream with the axial air stream guided through the turret insert results in a smaller twist angle, whereby the flenum that is formed becomes longer and the ignition takes place later as a result.

It is particularly disadvantageous in the case of the known devices the fact that the movable and relatively heavy "

Twist inserts after the burner has been in operation for a short time due to the heat radiation in the bearings and guides become difficult to move and then no quick adjustment on the requirements of the fener and steam generator operations a is very possible. Furthermore, the fuel-air mixture bit of the secondary air is first mixed aa Brenneraund.

The invention is based on the task to Qrunde without moving Guide vane systems have a swirl effect suitable for combustion to enable the fuel-air mixture and thereby the resulting flame meets the operating requirements of the Steam generator or the like.

The object is achieved according to the invention in that the two guide vane rings are separated by a ring which can be adjusted in the axial direction of the burner and which, in its highest position, leaves the outer guide vane ring largely free for the fuel in the fuel direction below the inner guide vane ring. The fuel-air mixture flowing out of the dust ring surface is fed via guide plates distributed around the circumference to a guide vane system, to which hot air flows from the air box at the same time. Fuel-air health and hot air flow to the air space below the Leitsohaufeleysteas, which is wider than the dust ring surface. The fuel-air mixture acts at an angle on the core air tube, which is designed as a flat baffle. A part of the fuel slides over a downward sloping bed into the rear dust ring surface and the remaining part flows down through the opening in the bottom surface in front of the baffle. The greater part of the combustion air is moved by the guide vane ring which narrows conically against the air flow direction of the fuel and which is twice as high as the guide vane ring assigned to the fuel.

In a further embodiment of the invention, the cooling pipe connections are

and drains of the cooling coils for the core air pipe and the outer tube is guided within the air duct.

Eia an exemplary embodiment of the burner according to the invention shown in the drawing and is described in more detail la the following «They show:

Fig. 1 shows the invention burner la section, Fig. 2 the burner in plan view, Flg. 3 the processing of the Leitsohaufelsysteas after the one in Flg. 1 shown line III-III.

The dust distribution is initiated la distributor head 21. The Genlsch-Stroa emerging from the dust line 22 hits the core air pipe 1 formed with an impact surface h. The bottom surface 2 rter dust ring surface 3 penetrates the cylindrical outer dust jacket 23 at an inclination to the antenna axis. Part of the dust-air-geeiecb.ee can flow down through an opening 5. A part of the bottom surface slides over the bottom surface 2, which is laterally guided, inter alia, by the core air pipe 1, to the rear ring surface 3. The bottom surface 2, which is inclined downwards, creates a large distribution head 21 which has an advantageous effect on the even distribution of dust. Aue dea Misohraua, the geal reaches the guide vane ring H _1, which is adapted to the twist direction provided for the secondary air. The mixture reaches the exit opening 27 of the guide vane ring 11 via roof-shaped fixtures. Through the triangular openings 29 that arise towards the air space 28, hot air strives into the spaces 30 which are delimited by the guide vane ring 10. The main part of the secondary air flows through the guide vane ring 10, which is firmly connected to the conical outer wall 31. An adjustable ring 12 is provided between this guide vane ring 10 and the guide vane ring 11 for the fuel-air mixture. The guide vane ring 11 for the

Fuel-Air-Geaiaci will you a cover "a" αβ-eohloasson. The adjustable ring 12 had the height "b". If this ring is hoohgezogea, it is in the end position gate of the cover "β". The long conical baffles 6 for the secondary air become free at height "b". The exit speed is reduced and of the twist angle ·, because the air in height · "b" near inside, i.e. can exit in the direction of the core air pipe 1.

The introduction of the secondary air and fuel-air supply through the guide vane ring 10 and 11 within the burner favors the supply conditions asi Burner outlet. This is particularly important when burning clay with lean coal. The exit level 27 of the fuel-air system, originally laid down by the burner, is sufficient Gate of bit radiation from the fire room »protected. It no additional cooling coil is required.

The feed lines to the cooling coils 32 and 33 aa core air pipe 1 and outer pipe 35 are laid so that they remain inside the air duct 8. The housing of the air duct β receives openings 36 for the supply and return flow, which fork up inside the air duct β. Through this guide the installation and removal of the cooling troughs is made much easier, since all pipe welding seams are inside the air ducts are accessible from and insulation of these lines is not required.

Protection claim & e-

Claims (3)

i I * · f · Iff »- 5 - 11/20/69 Pa 6932 Ga 6931 Sckutzanspriiohe Bth / Bo 1.) Burners, preferably round burners, for ataubföraige fuels or the like., Be ¹ of which the combustion air and the fuel is guided over fixed Leitsehaufolsysteae, the swirl effect is variable, because it is indicated that the two guide vanes " wreaths (lo / ll duroh) a adjustable in the axial direction of the burner ring (12) are separated, the BSI its highest congestion dsn üuC ^ ren vane ring (lO) in the combustion stof 1 below dei3 direction vane crane "a (H) for the hre ~ r >> Toft knows t & ahend froi lets 2.) burner n ^ ch claim 1, characterized in that that the aua dor dust ring surface (3) * elrtfrao ^ because fuel-air-geisi3ch distributed over the circumference j guide plate (, ° 6) a: Leitsi naufelsystt κ (?) can be fed, ti.: ;; from :! -. ■■ α Luftkastsu (ß ^x : -lelchzc, 'tig neißlui't: uilic Qt I v-iiG alternate Λ Hronnstof f-Lnf t-Go-ais ^ h nnd Heißltift dom \ under a.Li of the Lei tscl-auf el sys'glis (?) existing, opposite ! 6er ! .- f-.ai'hringfi.'ici ο (λ) extended tone air space (28) sustrout. >. )] .iresiEu; r iiach len A "proverbs 1 uacl 2, thereby jg ο ic η η ζ e χ ch net that the Brenne toi "fL aft- : ^if: e; 2iar · - ^E:: ^ Gr- Wi: v; l üa ^r as an impact surface (h) excluded ii 1i} l ... Gto Kcj.-n; uf trohr (I) beaui soiilagt and an ioil el · 'ο j Πχ'βηη. '. ίtor:' \. 3 iibbr one sinewy; n «ch -ui ⁺ on directed Bodci ™ I flee (?) Into the hir-jrc Steubringilk'che (3; glleitet unö ? H (: - rr:; tlir ^'r.-F Toil uui or lj /; before Prallflächt (4) reasonable.. jo: -dr: Ctu öfirt> u [ _; ('^; ) generally Boch: nflache <, 2) downwards j! '... "'D> - ^r ::.? Cr · r: -ch t'cn .UEprürhon 1 bir 3, dadureii Ί fe ^! - k '"- · ν L: ^:: -C- -. c 1 ■ η et df: H üer croOte part of the Ij combustion air through which conically against the flow I! direction of the Bronnstoffes narrowing Leltschaufel- I, wreath ^ 10) is moved, preferably double eo high 69 4 6 0 19 ft 1 * Like Aer de «fuel, guide vane ring (11) assigned to it. 3.) burner according to one of the preceding claims, characterized in that the Cooling pipes and discharge lines (34, 36) of the cooling coils (32, 33) for the core air pipe (1) and the outer pipe (35) are guided within deep air duct (8).