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GB1197025A - A Duct System for Fluid, with a Plurality of Discharge Orifices - Google Patents

A Duct System for Fluid, with a Plurality of Discharge Orifices

Info

Publication number
GB1197025A
GB1197025A GB3203868A GB3203868A GB1197025A GB 1197025 A GB1197025 A GB 1197025A GB 3203868 A GB3203868 A GB 3203868A GB 3203868 A GB3203868 A GB 3203868A GB 1197025 A GB1197025 A GB 1197025A
Authority
GB
United Kingdom
Prior art keywords
duct
orifice
metal
restrictors
burners
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
Application number
GB3203868A
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.)
KONINKLIJKE HOOGOVENS EN STAAL
Koninklijke Nederlandsche Hoogovens en Staalfabrieken NV
Original Assignee
KONINKLIJKE HOOGOVENS EN STAAL
Koninklijke Nederlandsche Hoogovens en Staalfabrieken NV
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
Priority claimed from NL6709429A external-priority patent/NL6709429A/xx
Priority claimed from NL6803567A external-priority patent/NL6803567A/xx
Application filed by KONINKLIJKE HOOGOVENS EN STAAL, Koninklijke Nederlandsche Hoogovens en Staalfabrieken NV filed Critical KONINKLIJKE HOOGOVENS EN STAAL
Publication of GB1197025A publication Critical patent/GB1197025A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/02—Branch units, e.g. made in one piece, welded, riveted
    • F16L41/03—Branch units, e.g. made in one piece, welded, riveted comprising junction pieces for four or more pipe members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/02—Rigid pipes of metal

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

1,197,025. Burners. KONINKLIJKE NEDERLANDSCHE HOOGOVENS EN STAALFABRIEKEN N.V. 4 July, 1968 [6 July, 1967; 13 March, 1968], No. 32038/68. Heading F4T. [Also in Division G3] A duct, e.g. leading to burners in a metallurgical furnace, comprises an air inlet 2, discharge orifices 4, and downstream of each orifice a flow restrictor 5, the restrictors being successively narrower and further from the orifices 4 in the direction of flow. A restrictor 5 can also be placed upstream of the first orifice 4 in a straight duct portion 6 that has a length at least 17 times the duct diameter D. The duct is of circular or rectangular section and can be metal or brick. In the latter case an orifice is formed by metal strips 8 bolted to anchors 7 so as to leave passageways adjacent the inner wall of the duct. The strips 8 can pass sealingly to the outside of the duct, and be welded to a metal duct casing. A balancing strip 10 can be adjusted to a correct position and then welded at 11 to the outer metal casing. The restrictors can be formed by a sieve plate or gauze, and the first can be omitted. The restrictors can be placed the same distance downstream of each orifice. The inlet can be placed at the centre of the duct at 16.
GB3203868A 1967-07-06 1968-07-04 A Duct System for Fluid, with a Plurality of Discharge Orifices Expired GB1197025A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6709429A NL6709429A (en) 1967-07-06 1967-07-06
NL6803567A NL6803567A (en) 1968-03-13 1968-03-13

Publications (1)

Publication Number Publication Date
GB1197025A true GB1197025A (en) 1970-07-01

Family

ID=26644210

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3203868A Expired GB1197025A (en) 1967-07-06 1968-07-04 A Duct System for Fluid, with a Plurality of Discharge Orifices

Country Status (2)

Country Link
FR (1) FR1574959A (en)
GB (1) GB1197025A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039965A1 (en) * 1980-05-08 1981-11-18 Hoogovens Groep B.V. Gas flow arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039965A1 (en) * 1980-05-08 1981-11-18 Hoogovens Groep B.V. Gas flow arrangement

Also Published As

Publication number Publication date
FR1574959A (en) 1969-07-18
DE1775080A1 (en) 1972-04-13
DE1775080B2 (en) 1972-11-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee