EP0145382A2 - Générateur de mouvement hélicoidal axial - Google Patents

Générateur de mouvement hélicoidal axial Download PDF

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Publication number
EP0145382A2
EP0145382A2 EP84308114A EP84308114A EP0145382A2 EP 0145382 A2 EP0145382 A2 EP 0145382A2 EP 84308114 A EP84308114 A EP 84308114A EP 84308114 A EP84308114 A EP 84308114A EP 0145382 A2 EP0145382 A2 EP 0145382A2
Authority
EP
European Patent Office
Prior art keywords
vanes
flow path
gas flow
annular gas
duct
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.)
Ceased
Application number
EP84308114A
Other languages
German (de)
English (en)
Other versions
EP0145382A3 (fr
Inventor
Brian Wilfred Fuller
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.)
Babcock Product Engineering Ltd
Original Assignee
Babcock Product Engineering Ltd
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 Babcock Product Engineering Ltd filed Critical Babcock Product Engineering Ltd
Publication of EP0145382A2 publication Critical patent/EP0145382A2/fr
Publication of EP0145382A3 publication Critical patent/EP0145382A3/fr
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
    • 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 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
    • F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
    • F23C7/006—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes adjustable

Definitions

  • an annular gas flow path having a portion of which the outer boundary has a cross-section that tapers in the general direction of flow along the path and of which the inner boundary is cylindrical, there being a ring of swirl inducing vanes lying within the portion and reciprocable as a unit in the general direction of flow between a position in which gas can pass the vanes only by flowing between the vanes and a position in which some of the air can flow between the vanes and some of the air can flow past, outside, the vanes.
  • Figure 1 illustrates a burner mounted at an opening 1 in furnace wall 2. Coaxial with the opening 1 is duct 3 through which pulverised fuel entrained in primary air can be discharged into the furnace. Concentric with the duct 3 is a core tube 4 that houses a light-up burner (not shown).
  • a duct 8 Sealed at its leading end around the opening 1 is a duct 8 for secondary air. Secondary air passes to the duct 8 from the wind box 9 through six plane, equispaced and radially extending blades 10 that extend between a rear wall 11 and a flange 12. The flange 12 extends radially outwardly from the wider end of a conically tapering portion 16 that is connected at its narrower end to the duct 8.
  • the forward end of the duct 2, tube 4 and duct 8 lie at the level of the outer surface of the wall 2.
  • a unit 20 comprising a set of similar and equispaced vanes 21, is disposed within the tapering portion 16.
  • the unit comprises an inner ring 22 of constant cross-section that can reciprocate along the duct 3 and an outer ring 23 so shaped that at the most forward position to which the unit can move ( in which position it is shown in Figure 1), the outer ring 23 mates with the tapering position 16.
  • Both rings 22 and 23 extend from end to end of the vanes; ring 22 extends a little rearwardly of them.
  • the vanes 21 are each connected at their edges to both rings 22 and 23.
  • the wider end 21a of each vane extends radially; downstream of that end the vanes curve to induce swirl in the air passing between them.
  • the edges of the vanes 21 are inclined to the radius at an angle in the order of 45°.
  • every fourth vane 21 Connected to the rear end of every fourth vane 21 is a rod 30 that extends rearwardly from the vane 30, parallel to the axis, and through the rear wall 11.
  • the end of each rod 30 that projects beyond the rear wall 11 is threaded and carries a screw member 31.
  • the unit 20 can be moved back from the position in which it is shown in Figure 1 to position indicated in broken lines in Figure 1.
  • all the secondary air must pass between the vanes 21 and so be caused to swirl. It will also be accelerated.
  • the unit has been retracted, only some of the secondary air passes between the vanes; the rest passes as an envelope past the outer edges of the vanes.
  • reciprocal movement of the unit 20 could be effected by means remote from the burner.
  • a conical baffle should be located around the tube 4 at its junction with the rear wall 11 to steer the air from its radially inward flow past the blades 10 to its axial flow between the vanes 21. The effect of the baffle will be to inhibit turbulance and the losses resulting from it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
EP84308114A 1983-11-22 1984-11-22 Générateur de mouvement hélicoidal axial Ceased EP0145382A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8331128 1983-11-22
GB838331128A GB8331128D0 (en) 1983-11-22 1983-11-22 Axial swirl generators

Publications (2)

Publication Number Publication Date
EP0145382A2 true EP0145382A2 (fr) 1985-06-19
EP0145382A3 EP0145382A3 (fr) 1985-10-02

Family

ID=10552155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84308114A Ceased EP0145382A3 (fr) 1983-11-22 1984-11-22 Générateur de mouvement hélicoidal axial

Country Status (5)

Country Link
EP (1) EP0145382A3 (fr)
DK (1) DK552484A (fr)
FI (1) FI844588A7 (fr)
GB (1) GB8331128D0 (fr)
ZA (1) ZA849100B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0945678A3 (fr) * 1998-03-25 2000-01-19 ENEL S.p.A. Brûleur à faible taux de NOx pour combustibles liquides et gazeux
US6322610B1 (en) 1998-11-10 2001-11-27 Danieli & C. Officine Meccaniche Spa Integrated device to inject oxygen, technological gases and solid material in powder form and method to use the integrated device for the metallurgical processing of baths of molten metal
FR2887597A1 (fr) * 2005-06-27 2006-12-29 Egci Pillard Sa Conduite annulaire et bruleur comportant une telle conduite

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB672583A (en) * 1950-09-30 1952-05-21 Wallsend Slipway & Engineering Improvements in air directors for use with liquid fuel and/or powdered fuel burners
DE2908448C2 (de) * 1979-03-05 1983-04-14 L. & C. Steinmüller GmbH, 5270 Gummersbach Brenner zur Verbrennung von stickstoffhaltigen Brennstoffen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0945678A3 (fr) * 1998-03-25 2000-01-19 ENEL S.p.A. Brûleur à faible taux de NOx pour combustibles liquides et gazeux
US6322610B1 (en) 1998-11-10 2001-11-27 Danieli & C. Officine Meccaniche Spa Integrated device to inject oxygen, technological gases and solid material in powder form and method to use the integrated device for the metallurgical processing of baths of molten metal
FR2887597A1 (fr) * 2005-06-27 2006-12-29 Egci Pillard Sa Conduite annulaire et bruleur comportant une telle conduite
WO2007000512A1 (fr) * 2005-06-27 2007-01-04 Egci Pillard Bruleur
US9011141B2 (en) 2005-06-27 2015-04-21 Egci Pillard Burner

Also Published As

Publication number Publication date
EP0145382A3 (fr) 1985-10-02
ZA849100B (en) 1985-11-27
DK552484A (da) 1985-05-23
GB8331128D0 (en) 1983-12-29
FI844588L (fi) 1985-05-23
DK552484D0 (da) 1984-11-21
FI844588A0 (fi) 1984-11-22
FI844588A7 (fi) 1985-05-23

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE GB IT NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): DE GB IT NL SE

17P Request for examination filed

Effective date: 19860318

17Q First examination report despatched

Effective date: 19861203

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19890129

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FULLER, BRIAN WILFRED