US3785932A - Sealing device for coke oven door - Google Patents

Sealing device for coke oven door Download PDF

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Publication number
US3785932A
US3785932A US00222583A US3785932DA US3785932A US 3785932 A US3785932 A US 3785932A US 00222583 A US00222583 A US 00222583A US 3785932D A US3785932D A US 3785932DA US 3785932 A US3785932 A US 3785932A
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US
United States
Prior art keywords
door frame
levers
door
knife edge
coke oven
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
US00222583A
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English (en)
Inventor
L Tucker
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.)
Raymond Kaiser Engineers Inc
Original Assignee
Koppers Co Inc
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 Koppers Co Inc filed Critical Koppers Co Inc
Application granted granted Critical
Publication of US3785932A publication Critical patent/US3785932A/en
Assigned to RAYMOND KAISER ENGINEERS INC., A CORP OF OHIO reassignment RAYMOND KAISER ENGINEERS INC., A CORP OF OHIO ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KOPPERS COMPANY, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B25/00—Doors or closures for coke ovens
    • C10B25/02—Doors; Door frames
    • C10B25/16—Sealing; Means for sealing

Definitions

  • a plurality of spaced apart first levers are pivotally mounted to the external surface of a coke oven door frame and a plurality of spaced apart second levers are also pivotally mounted externally to the door frame.
  • the ends of the first levers coact with the ends of the second levers that also coact with a sealing knife edge mounted externally to the door frame.
  • Conventional J-bolts hold the knife edge in place. Stops are provided at the corners of the door frame to keep the knife edge in proper position.
  • FIG. 1 is a simplified schematic view of one side of a coke oven door equipped with an embodiment of the invention
  • FIG. 2 is an enlarged view of a portion of the structure of FIG. 1;
  • FIG. 3 is a sectional view along line IIIIII of FIG. 2;
  • FIG. 4 is a sectional view along line IV-IV of FIG. 2;
  • FIG. 5 is a simplified schematic prespective view of one corner portion of the door of FIG. 1.
  • a door frame 11 of a conventional coke oven door is provided with a plurality of pivotal, interacting levers 13, 15 that are mounted to the door frame 11 by means of bolt and nut assemblies 17, 19 which are indicated also in FIGS. 3 and 4.
  • the door frame is also fitted around its entire perimeter with a sealing knife edge 21 that is secured in place by means of a plurality of J-bolts 23 in a conventional manner.
  • the sealing knife edge 21 is disposed to engage a sealing surface 25 of a conventional door jamb 27, when the coke oven door is in the closed position.
  • the levers 13 are generally triangular in shape with one apex 29 at the top having an arcuate shape, as shown in FIG. 2.
  • the levers 13 are long enough to overlap the spaced apart ends of the levers 15 mounted below and between levers 1-3, as shown in FIGS. 1 and 2.
  • the end portions of the levers 15 have rounded bosses 31 thereon that coact with the bottom surface of the superimposed levers 13.
  • the bottom apex 33 of each lever 15 is also rounded as shown and it engages and coacts with the top edge surface of the sealing knife edge 21.
  • Each one of the levers 13, 1-5 is provided with an oval hole 35 through which the pivot bolts 17, 19 extend,
  • oval holes 35 permit the lever 13, 15 to move up and down freely within limits, as defined by the size of the oval holes 35.
  • the upper edge portion of the door frame 11 carries an elongate rectangular bar 37 on the outside, which bar cooperates with short angle-shaped bearing members 39. Both the elongate rectangular bar 37 and the short angleshaped bearing members 39 are secured to the door frame 11 by means of conventional bolt, nut and washer assemblies 41.
  • FIG. 5 illustrates a pair of stop bars 43, 45 that are bolted as at 47, to the door frame 11 at each corner of the coke oven door frame.
  • the stop bars 43, 45 are disposed in a position just slightly above, or just contacting the top edge surface of the sealing knife edge 21.
  • These stop bars 43, 45 are installed where shown to ensure that the sealing knife edge remains in the desired attitude with respect to the door frame 11, and to prevent the sealing knife edge from becoming canted out of its position or location.
  • sealing knife edge 21 is made in lengths to suit the respective side lengths of the door frame 11, and that at each corner, one side length of sealing bar overlaps the adjacent abutting end of a side length of bar 21a.
  • the overlapping sealing knife edge bars 21, 21a are welded to make an airtight seal at the corners of the door frame.
  • spring loaded plunger and other devices have been used to try to urge the sealing knife edge into contact with the door jamb and to make a satisfactory seal therewith.
  • Some of the sealing devices used include thin stainless steel plates, springs, plungers, and adjusting screws which are costly to maintain and which, in many instances, do not exert enough force on the door jamb to make an effective seal.
  • the pivotal interengaging lever system of the present invention exerts equal pressure at spaced apart locations on the sealing knife edge; such locations being where each rounded apex 33 contacts the upper edge surface of the sealing knife edge.
  • the system of levers is so arranged that the force exerted by each lever is equal to the force exerted by every other lever.
  • a coke oven door having a door frame that has a knife edge sealing strip peripherally surrounding the door frame for engaging a door jamb, and that has means for holding the sealing strip against the door frame, the improvement comprising:
  • each one of said second levers being movable in a plane vertically disposed toward said door jamb and into engagement with said knife edge sealing strip whereby, when said coke oven door is latched closed, said first levers coact with said second levers which coact with said sealing strip, thereby urging it into intimate sealing relation with said door jamb, and
  • each one of said first levers is triangular in shape with one apex thereof coacting with said door frame; and wherein (b) each one of said second levers is triangular in shape with one apex thereof coacting with said sealing strip.
  • a coke oven door having a door frame that has a knife edge sealing strip peripherally surrounding the door frame for engaging a door jamb, and that has means for holding the sealing strip against the door frame, the improvement comprising:
  • stop means mounted externally to said door frame adjacent each corner thereof in such a way that said stop means coacts with said sealing strip and keeps the same in a preselected attitude.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Coke Industry (AREA)
US00222583A 1972-02-01 1972-02-01 Sealing device for coke oven door Expired - Lifetime US3785932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22258372A 1972-02-01 1972-02-01

Publications (1)

Publication Number Publication Date
US3785932A true US3785932A (en) 1974-01-15

Family

ID=22832813

Family Applications (1)

Application Number Title Priority Date Filing Date
US00222583A Expired - Lifetime US3785932A (en) 1972-02-01 1972-02-01 Sealing device for coke oven door

Country Status (3)

Country Link
US (1) US3785932A (cg-RX-API-DMAC10.html)
FR (1) FR2171080B1 (cg-RX-API-DMAC10.html)
GB (1) GB1417207A (cg-RX-API-DMAC10.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897310A (en) * 1974-03-07 1975-07-29 Koppers Co Inc Coke oven door

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5238539A (en) * 1987-08-06 1993-08-24 Saturn Machine & Welding Co., Inc. Coke oven door

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897310A (en) * 1974-03-07 1975-07-29 Koppers Co Inc Coke oven door

Also Published As

Publication number Publication date
GB1417207A (en) 1975-12-10
FR2171080B1 (cg-RX-API-DMAC10.html) 1975-03-28
FR2171080A1 (cg-RX-API-DMAC10.html) 1973-09-21

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Legal Events

Date Code Title Description
AS Assignment

Owner name: RAYMOND KAISER ENGINEERS INC., OAKLAND CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KOPPERS COMPANY, INC.;REEL/FRAME:004292/0615

Effective date: 19840503