US3674248A - Closed end tuyere coil - Google Patents

Closed end tuyere coil Download PDF

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Publication number
US3674248A
US3674248A US79379A US3674248DA US3674248A US 3674248 A US3674248 A US 3674248A US 79379 A US79379 A US 79379A US 3674248D A US3674248D A US 3674248DA US 3674248 A US3674248 A US 3674248A
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US
United States
Prior art keywords
tubular member
coil
outer tubular
thermal conductivity
tuyere
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
US79379A
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English (en)
Inventor
Donald J Shellenberger
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.)
Jones and Laughlin Steel Inc
Ltv Steel Co Inc
Original Assignee
Jones and Laughlin Steel Corp
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 Jones and Laughlin Steel Corp filed Critical Jones and Laughlin Steel Corp
Application granted granted Critical
Publication of US3674248A publication Critical patent/US3674248A/en
Assigned to JONES & LAUGHLIN STEEL, INCORPORATED reassignment JONES & LAUGHLIN STEEL, INCORPORATED MERGER (SEE DOCUMENT FOR DETAILS). , DELAWARE, EFFECTIVE JUNE 22, 1981. Assignors: JONES & LAUGHLIN STEEL CORPORATION, A CORP. OF PA., NEW J&L STEEL CORPRATION, A CORP. OF DE., (CHANGED TO), YOUNGTOWN SHEET & TUBE COMPANY, A CORP. OF OH. (MERGED INTO)
Assigned to LTV STEEL COMPANY, INC., reassignment LTV STEEL COMPANY, INC., MERGER AND CHANGE OF NAME EFFECTIVE DECEMBER 19, 1984, (NEW JERSEY) Assignors: JONES & LAUGHLIN STEEL, INCORPORATED, A DE. CORP. (INTO), REPUBLIC STEEL CORPORATION, A NJ CORP. (CHANGEDTO)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres

Definitions

  • Tuyeres and like articles employed to deliver fluids in extremely hot environments include an arrangement for their [52] [1.8. Cl........##;.colour266/4l,110/1825,122/6.6,
  • cooling comprising a conduit in the form of a coil having a plurality of turns for passing a cooling fluid through the article at high velocities.
  • the conduit consists of an outer tubular member closed at one end to fluid flow and an inner tubular member located within the outer tubular member so as to form an annular passageway between the members.
  • the tubu- 56] Ref n Ci lar members are in fluid communication adjacent the closed end of the outer member. Cooling fluid introduced into the UNITED STATES PATENTS conduit first passes through the conduit along the annular er e mn t.m W6 h t .dg m m m s S e m u u .m MD.
  • This invention relates generally to equipment for use in transferring fluids in an extremely hot environment, and, more particularly, to tuyeres, monkeys and like apparatus having improved arrangements for their cooling for use with metallurgical furnaces.
  • an object of the invention is to provide tuyeres and like apparatus having a cooling arrangement by means of which improved cooling of the apparatus is obtained, thereby extending their service lives.
  • Another object of the invention is to provide such apparatus wherein the cooling arrangement enables extremely high cooling fluid velocities to be established at low flow rates and pressure drops.
  • Another object of the invention is to provide such apparatus wherein the cooling arrangement maintains the feed end of the apparatus cooled and intact even though the other end has failed.
  • FIG. I is a longitudinal view, partly in section, of a cooling arrangement embodying the principles of the invention.
  • FIG. 2 is a cross-sectional view of the cooling arrangement encased in a tuyere body
  • FIG. 3 is a longitudinal view, partly in section, of the cooling arrangement embodied in a tuyere structure in a manner to form part of the hot blast conducting surface;
  • FIG. 4 is an enlarged cross-sectional view of a part of the cooling arrangement.
  • a tuyere generally indicated at comprises a body or shell 11 having a generally circular cross-sectional configuration.
  • Body 11 is made of copper, copper alloy, aluminum alloy or other material of high thermal conductivity, and includes a back end portion, generally indicated at 12, and having a conical outer surface 14 and a front end portion, generally indicated at 13.
  • the tuyere is mounted in a blast furnace by means of back end portion 12, the outer surface 14 of which rests in a mating surface in a tuyere cooler mounted in the blast furnace wall. Substantially the entire front end portion 13 of the tuyere extends into the interior of the blast furnace, and hot blast is delivered into the furnace through passage 15 extending from the back end portion to the front end portion of the tuyere.
  • a cooling arrangement for circulating a cooling fluid, such as water, through the tuyere to cool it and keep it from failing from the effect of the hot environment in which it is located.
  • the cooling arrangement comprises a conduit in the form of a coil having a plurality of turns 17l7 for both supplying a cooling fluid to the tuyere and discharging the fluid from the tuyere.
  • the conduit consists of an outer tubular member 18 closed at one end 19 to fluid flow and adapted to be connected to a source of water at its other end 20.
  • an inner tubular member 21 Positioned within outer tubular member 18 is an inner tubular member 21 which is open to fluid flow at its end 22 adjacent the closed end 19 of member 18 and adapted to be connected to a means for receiving water discharged from the tuyere at its other end 23.
  • the outer tubular member is constructed of copper, copper alloys or other material of high thermal conductivity.
  • the inner tubular member can be constructed of a material of high thermal conductivity also, although satisfactory operation of the cooling arrangement does not require it.
  • the outside diameter of inner tubular member 21 is smaller than the inside diameter of outer tubular member 18 whereby the tubular members cooperate to form an annular conduit passageway 24, the inside surface of inner tubular member 21 forming a central conduit passageway 25.
  • cooling water supplied to end 20 of outer tubular member 18 circulates through the conduit and tuyere by first passing along annular conduit passage 24, then entering central conduit passage 25 at its end 22, and passing therealong to be discharged from the tuyere at end 23.
  • Spacing means 30, such as a copper rod of small diameter, is positioned between and along essentially the entire lengths of tubular members 21 and 18 along the outside of turns 1717.
  • This structure insures good cooling fluid flow along the outside of the turns, which is the area in a tuyere structure requiring the greatest amount of cooling.
  • the spacing means provides essentially only a point contact between the inner and outer tubular members, whereas the absence of the spacing means might result in the inner and outer tubular members coming in much greater contact along the outside of turns 17-17 and essentially blocking off cooling fluid flow to that area.
  • a straight copper rod 30 is spot welded to a first straight length of tubing which is to constitute the member 21 and the tubing and rod are inserted within a second straight length of tubing which is to constitute member 18.
  • the resulting; structure is coiled on a mandrel of appropriate shape and size,making sure that the rod 30 is along the outside of the turns that are formed.
  • the passageway between the tubular members is not truly annular in shape, but may be considered as such for purposes of this description and the accompanying claims.
  • the body or shell 11 is cast about the arrangement in accordance with conventional metal-casting techniques. If desired, the turns 17-17 can be welded together to facilitate casting and to preclude hot blast from escaping between the turns should they become exposed upon erosion of the shell by the hot materials: in the furnace.
  • cooling water can continue to be supplied to the back end portion 12 of the tuyere to cool it and maintain it intact and in place.
  • the turns 17-17 of the conduit coil abut one another and are maintained in that relationship by welding the turns together as shown at 26-26.
  • a flange 27 of copper, a copper alloy, aluminum alloy or some other material of high thermal conductivity is cast or fabricated about a number of turns 17-17 at one end of the coil.
  • the flange has a conical surface 28 by means of which it is mounted in a mating surface of a tuyere cooler in a furnace wall. When so used, hot blast is conducted to the inside of the furnace over the inside surfaces 29-29 of the turns 17-17.
  • welds 2626 which also serve to seal off any open spaces between successive turns, the hot blast passing through the inside of the coil along its longitudinal axis is confined within the coil and does not escape between the turns.
  • a tuyere, monkey or like article for use in a metallurgical furnace comprising a coil having a plurality of successive turns maintained in substantial abutment with one another, said coil including an outer tubular member closed at one end to fluid flow and an inner tubular member positioned within the outer tubular member, at least the outer tubular member being constructed of a material of high thermal conductivity, said tubular members cooperating to form an annular conduit passageway between them, said inner tubular member forming a central conduit passageway, the ratio of the cross-sectional area of the central conduit passageway to the cross-sectional area of the annular conduit passageway being at least about 2 to l and the annular conduit passageway and the central conduit passageway being in fluid communication adjacent the closed end of the outer tubular member, and flange means made of a material of high thermal conductivity secured to one end of said coil for positioning and retaining the coil in said furnace.
  • the material of high thermal conductivity is one selected from the group consisting of copper, copper alloys and aluminum alloys.
  • the material of high thermal conductivity is one selected from the group consisting of copper, copper alloys and aluminum alloys.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US79379A 1970-10-09 1970-10-09 Closed end tuyere coil Expired - Lifetime US3674248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7937970A 1970-10-09 1970-10-09

Publications (1)

Publication Number Publication Date
US3674248A true US3674248A (en) 1972-07-04

Family

ID=22150178

Family Applications (1)

Application Number Title Priority Date Filing Date
US79379A Expired - Lifetime US3674248A (en) 1970-10-09 1970-10-09 Closed end tuyere coil

Country Status (6)

Country Link
US (1) US3674248A (enrdf_load_stackoverflow)
CA (1) CA935427A (enrdf_load_stackoverflow)
DE (1) DE2144348A1 (enrdf_load_stackoverflow)
FR (1) FR2112278B1 (enrdf_load_stackoverflow)
GB (1) GB1329885A (enrdf_load_stackoverflow)
SU (1) SU382300A3 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853309A (en) * 1972-03-20 1974-12-10 C Widmer Components using cast-in cooling tubes
US4124060A (en) * 1974-08-06 1978-11-07 Caterpillar Tractor Co. Rotor
US4271993A (en) * 1975-11-27 1981-06-09 British Gas Corporation Slag tap for coal slagging gasifier
EP0816515A1 (de) * 1996-07-05 1998-01-07 MAN Gutehoffnungshütte Aktiengesellschaft Kühlplatte für metallurgische Öfen der Eisen- und Stahlindustrie
US5934270A (en) * 1997-01-30 1999-08-10 Kim; Sinil Fireplace heat exchange device
US20060213210A1 (en) * 2005-03-24 2006-09-28 Tomlinson John J Low-cost heat pump water heater

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU78707A1 (enrdf_load_stackoverflow) * 1977-12-19 1978-06-21
US11834964B2 (en) 2021-11-24 2023-12-05 General Electric Company Low radius ratio fan blade for a gas turbine engine
US11913352B2 (en) 2021-12-08 2024-02-27 General Electric Company Cover plate connections for a hollow fan blade
CN114018058B (zh) * 2022-01-10 2022-03-18 唐山精研实业有限责任公司 一种复合材料氧煤喷枪
US11739698B2 (en) 2022-01-19 2023-08-29 General Electric Company Aero-acoustically dampened bleed valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853309A (en) * 1972-03-20 1974-12-10 C Widmer Components using cast-in cooling tubes
US4124060A (en) * 1974-08-06 1978-11-07 Caterpillar Tractor Co. Rotor
US4271993A (en) * 1975-11-27 1981-06-09 British Gas Corporation Slag tap for coal slagging gasifier
EP0816515A1 (de) * 1996-07-05 1998-01-07 MAN Gutehoffnungshütte Aktiengesellschaft Kühlplatte für metallurgische Öfen der Eisen- und Stahlindustrie
US5934270A (en) * 1997-01-30 1999-08-10 Kim; Sinil Fireplace heat exchange device
US20060213210A1 (en) * 2005-03-24 2006-09-28 Tomlinson John J Low-cost heat pump water heater

Also Published As

Publication number Publication date
CA935427A (en) 1973-10-16
FR2112278A1 (enrdf_load_stackoverflow) 1972-06-16
FR2112278B1 (enrdf_load_stackoverflow) 1977-01-21
GB1329885A (en) 1973-09-12
SU382300A3 (enrdf_load_stackoverflow) 1973-05-22
DE2144348A1 (de) 1972-04-13

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Legal Events

Date Code Title Description
AS Assignment

Owner name: JONES & LAUGHLIN STEEL, INCORPORATED

Free format text: MERGER;ASSIGNORS:JONES & LAUGHLIN STEEL CORPORATION, A CORP. OF PA.;YOUNGTOWN SHEET & TUBE COMPANY,A CORP. OF OH. (MERGED INTO);NEW J&L STEEL CORPRATION, A CORP. OF DE., (CHANGED TO);REEL/FRAME:004510/0801

Effective date: 19851018

AS Assignment

Owner name: LTV STEEL COMPANY, INC.,

Free format text: MERGER AND CHANGE OF NAME EFFECTIVE DECEMBER 19, 1984, (NEW JERSEY);ASSIGNORS:JONES & LAUGHLIN STEEL, INCORPORATED, A DE. CORP. (INTO);REPUBLIC STEEL CORPORATION, A NJ CORP. (CHANGEDTO);REEL/FRAME:004736/0443

Effective date: 19850612