US3679194A - Coolers - Google Patents

Coolers Download PDF

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Publication number
US3679194A
US3679194A US65427A US3679194DA US3679194A US 3679194 A US3679194 A US 3679194A US 65427 A US65427 A US 65427A US 3679194D A US3679194D A US 3679194DA US 3679194 A US3679194 A US 3679194A
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United States
Prior art keywords
cooler
cooling water
water
pipe
coolers
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Expired - Lifetime
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US65427A
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English (en)
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William Dyfrig Jones
Eric Peel
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Individual
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden

Definitions

  • the invention provides a cooler for insertion in the lining of a furnace, for example for bosh or stack cooling in a blast furnace, and which mitigates against the effects of cooler failure by having nose and body portions with mutually isolated cooling water cavities, so that in the event of failure of the nose portion of the cooler, which is the portion most likely to fail in practice, the cooler can be kept in operation by the cooling water passing through the body portion alone.
  • the nose portion cavity is fed with water through water passageways which extend through the body portion.
  • the body portion cavity is provided with bafiles which ensure that water passing therethrough travels into the vicinity of the nose portion.
  • PATENTEDJUL 25 I972 HIENTEDJUL 25 m2 saw 7 or 7 COOLERS This invention is concerned with coolers of the kind inserted at intervals in the lining of a furnace, e.g., for bosh and stack cooling in a blast furnace. Such coolers are commonly made of copper and known as flat block coolers. Their purpose is to reduce the temperature in the refractory lining, thereby prolonging the life of the refractory. Hereinafter such coolers will be identified as coolers of the kind referred to.
  • the coolers are currently designed to permit the flow of water through coolers in banks ranging from two to eight units. Water is passed through the coolers of a bank in series, the water flowing through the first cooler in the bank to the last and thence into a waste water trough. In the event of a cooler failure in a bank of coolers, it is at present necessary to discontinue or curtail the flow of water through the bank to prevent the water from entering the furnace. In consequence, all of the coolers are temporarily uncooled and are subject to excessive temperature which has a detrimental effect on the copper and the future life. Also, a cooler failure is not at first detectable as being in a particular cooler. All coolers in the bank must therefore be checked and the furnace taken ofi blast for this purpose.
  • a cooler of the kind referred to comprises a nose portion and a body portion having cavities for the passage of cooling water, the cavity in the nose portion being isolated from the cavity in the body portion, cooling water inlet and outlet openings for the body portion, separate cooling water inlet and outlet openings for the nose portion, and water passageways extending through the body portion to the nose portion from the inlet and outlet openings for the nose portion, the cross-sectional area of the cavity in the body part being substantially greater than that of the passageways so that the cooler can be kept in operation by passage of water through the body portion alone.
  • Baffles may be provided in the cavity to ensure the flow of cooling water towards the nose of the cooler.
  • the passageways are provided by pipes which extend through the cavity in the body portion with clearance from the walls thereof.
  • the rear of the cooler (i.e., the end opposite to the nose portion) may, in known manner, be provided with lugs for extraction of the cooler from its refractory surround.
  • the lugs, or inserts therein of stronger material may be attached to a plate of stronger material, e.g., steel, than the material of the cooler body portion, which plate is embedded in the rear of the cooler inwardly of the rear face thereof.
  • the plate is entirely surrounded by the material of the body portion to avoid the possibility of any electrolytic action.
  • the invention also provides a bank of coolers in accordance with the invention, the bank comprising a plurality of coolers, a common inlet pipe connected by branch inlet pipes to the inlet openings of the body and nose portions of each cooler, and a common outlet pipe connected by branch outlet pipes to the outlet openings of the body and nose portions of each cooler, each cooler having individual common inlet and outlet pipes and branch pipes connected thereto, the common outlet pipe of each cooler-except the last in the bank being connected to the common inlet pipe of the next cooler in the bank, and the branch inlet and outlet pipes to the openings of the nose portion of each cooler being provided with valves whereby the supply of water to the nose portion can be terminated.
  • the branch inlet and outlet pipes to the openings of the body portion of each cooler are provided with valves whereby the supply of water to the body portion can be terminated.
  • the common inlet and outlet pipes have valved outlets and inlets.
  • the valved outlet from the cooler immediately preceding the failed cooler can be connected by a flexible hose to the valved inlet to the cooler immediately following the failed cooler, the valves of the valved outlet and inlet thus connected are opened, and the valves in the branch pipes of the failed cooler are closed.
  • the invention provides a furnace comprising a cooler or a bank of coolers as defined above.
  • FIG. 1 is a sectioned plan view of a first embodiment
  • FIG. 2 is a sectional side elevation of the device shown in FIG. 1, the section being taken on the line C-C of FIG. 1;
  • FIG. 3 is an elevation of the rear of the device shown in FIG.
  • FIG. 4 is an elevation of the front of the device shown in FIG. 1;
  • FIG. 5 is a sectioned plan view of a second embodiment
  • FIG. 6 is a sectional side elevation of the device shown in FIG. 5 and taken on the line C-C of FIG. 5;
  • FIG. 7 is a rear elevation of the device shown in FIG. 5;
  • FIG. 8 is a front elevation of the device shown in FIG. 5;
  • FIG. 9 is a sectioned plan view of a third embodiment
  • FIG. 10 is a sectional side elevation taken on the line A-A of FIG. 9;
  • FIG. 11 is a rear elevation of the device of FIG. 9;
  • FIG. 12 is a front elevation of the device of FIG. 9, and
  • FIG. 13 shows diagrammatically the arrangement of feed pipes to a bank of coolers.
  • FIGS. 1 to 4 of the drawings there is shown a flat block cooler which comprises a closed generally rectangular flat vessel 1 which is cast in copper, the vessel defining a cavity 5.
  • the cooler tapers outwardly from its front end, or nose, 2 to its rear end 9.
  • a generally U-shaped pipe 3 is cast into the cooler so that its free ends are disposed at the rear end 9 of the cooler while the base portion 4 of the U-shaped pipe extends along the nose 2 of the cooler.
  • the major portion of the limbs of the pipe 3 are disposed within the cavity 5, but the portion 4 is buried in the wall of the nose portion 2.
  • the ends 6 of the pipe form respectively an inlet and an outlet for cooling water for the nose of the cooler.
  • Openings 7 and 8 formed in the rear end 9 of the cooler communicate with the cavity 5 and are respectively an inlet and an outlet for cooling water.
  • the cavity is formed with castin baffles 10 whereby the water entering the cavity is forced to follow a sinuous path. It will be seen however that the path between inlet 7 and the nose of the cooler is relatively direct.
  • FIGS. 5 to 8 of the drawings there is shown a flat block cooler generally similar to that described with reference to FIGS. 1 to 5.
  • the pipe 3 is buried in the wall of the cooler for its entire length.
  • the cooler of FIGS. 9 to 12 is similar to those described above and includes a single centrally disposed baffle 10.
  • FIG. 13 there is shown a pipe arrangement for connecting a series of the coolers together in a bank.
  • Water from a mains feed is fed to the bank of coolers by way of a pipe 15 which branches into two branch conduits at 17, one branch going to the inlet 6 of the first cooler l in the bank and the other branch going to the inlet 7 of the first cooler.
  • Valves 18, 19 are disposed in the respective branches and a tapping 16 is provided in the pipe 15 upstream of the valves 18, 19.
  • Valves 22, 23 are arranged in the pipes 26, 27 respectively, and a tapping 24 is provided in pipe 20.
  • the pipe is connected to the second cooler in the bank in similar manner to that in which the pipe 15 is connected to the first cooler in the bank.
  • Water leaves the bank of coolers through a pipe 25.
  • the pipe arrangement is such that should the nose portion of any one of coolers fail so that cooling water leaks from the cooler, the valves, e.g., l8 and 22, are shut so that the water circuit through the nose portion of that particular cooler is isolated, so that the bank of coolers can remain in use for a period of time. If it is desired to remove any one of the coolers from the bank, the valves l8, 19, 22, and 23 are shut and a flexible pipe connected between tappings 16 and 24 so that the cooler is bypassed.
  • the body When the water feed has been stopped to the nose portion, the body is so constructed that the baffle plates (which can be inserted either vertically or horizontally during casting) assist in guiding the water, coursing through the body of the cooler, to the vital nose area of the body portion.
  • the baffle plates which can be inserted either vertically or horizontally during casting
  • the pipework takes into consideration the minimum area of external pipework required and therefore proves no embarrassment to the overall construction of the pipework complex surrounding the furnace.
  • the cooler may be safely allowed to continue in operation as, having discontinued the water to the nose portion of any one cooler, the water flow into the body portion of the cooler or to the remaining coolers in the bank is unaffected and the damaged cooler is therefore capable of carrying out its function until it is convenient for the operator to change it.
  • the damaged cooler can be replaced during normal Off Blast period. There is ample warning and time for the exchange procedure. It will be noted, that, with the use of this system the water flows continuously through the bank of coolers at all times. There is no discontinuation of the flow of water, even when the cooler is to be replaced. Neither is there any discontinuation during the insertion of the flexible bypass pipe.
  • This pipework can be applied to any cooler irrespective of shape, provided the cooler is constructed in accordance with the invention.
  • Some furnaces are fitted with clamps to the shell of the furnace and, with the aid of hydraulic or ratchet equipment, the
  • coolers are eased out of the furnace and exchanged.
  • the lugs incorporated in the coolers for this purpose are often insufficiently strengthened to withstand the strain and are therefore torn from the casting.
  • the cooler is abandoned in the furnace, filled with refractory cement and the cooling water bypassed to the next cooler. This deprives the refractory lining in this area of any coolant and will possibly lead to a deterioration of the lining at this point.
  • the cooler described with reference to FIGS. 1 to 4 is designed to incorporate strengthened withdrawal lugs at the rear of the cooler which will help to obviate the parting of the lugs from the parent casting.
  • the full pulling strain is exerted evenly over the back end of the cooler, thereby making it extremely difficult to pull the lugs away from the casting without disintegrating the complete casting.
  • the pull is spread throughout the whole unit.
  • the lugs are torn due to lack of water in the cooler for a period, which allows the cooler to distort, thereby making it difficult to remove from within the furnace wall.
  • the bank of four coolers shown in FIG. 13 will enable the furnace operator to pipe up either vertically or horizontally and still ensure a complete flow of water with direct control over both the nose portion and body portion at any given time. It will be noted that the additional pipework is limited and confined to the cooler area.
  • a flat plate cooler for cooling the lining of a furnace, said cooler comprising a body which is cast in one piece and has an interior cavity for the passage of cooling water extending over substantially the whole length and width of the cooler, said body having front and rear walls defining opposite ends of said body and said interior cavity, a pipe cast into said front wall to provide a nose cavity therein for the passage of cooling water, a cooling water inlet and a cooling water outlet connected through said body in communication with said interior cavity, and a separate cooling water inlet and a separate cooling water outlet connected in communication with said pipe.
  • a cooler as set forth in claim 1 in which said pipe cast into said front wall has opposite end portions, said opposite end portions extending from said front wall back through said interior cavity of said body and respectively terminating in said separate cooling water inlet and said separate water cooling outlet.
  • a cooler as set forth in claim 1 in which said cooling water inlet and said cooling water outlet connected in communication with said interior cavity are connected in said rear wall.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Blast Furnaces (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
US65427A 1969-08-20 1970-08-20 Coolers Expired - Lifetime US3679194A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4161369 1969-08-20

Publications (1)

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US3679194A true US3679194A (en) 1972-07-25

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ID=10420501

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US65427A Expired - Lifetime US3679194A (en) 1969-08-20 1970-08-20 Coolers

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US (1) US3679194A (enrdf_load_stackoverflow)
JP (1) JPS5236961B1 (enrdf_load_stackoverflow)
AT (1) AT315215B (enrdf_load_stackoverflow)
CA (1) CA932959A (enrdf_load_stackoverflow)
CS (1) CS157681B2 (enrdf_load_stackoverflow)
DE (1) DE2041339C3 (enrdf_load_stackoverflow)
GB (1) GB1325537A (enrdf_load_stackoverflow)
NL (1) NL165547C (enrdf_load_stackoverflow)
SU (1) SU403199A3 (enrdf_load_stackoverflow)
ZA (1) ZA705680B (enrdf_load_stackoverflow)

Cited By (10)

* 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
US4157816A (en) * 1976-12-08 1979-06-12 S.A. Des Anciens Etablissements Paul Wurth Shaft furnace cooling
US4245572A (en) * 1979-05-30 1981-01-20 Sharp Kenneth C Furnace cooling system
US4245982A (en) * 1978-06-12 1981-01-20 Paul Wurth S.A. Cooling box for shaft furnaces
US4619442A (en) * 1983-05-26 1986-10-28 Nippon Kokan Kabushiki Kaisha Cooling box for steel making furnaces
US4753192A (en) * 1987-01-08 1988-06-28 Btu Engineering Corporation Movable core fast cool-down furnace
US6216797B1 (en) 1999-01-11 2001-04-17 Case Corporation Thrust system for a horizontal directional drill
US20020108741A1 (en) * 2001-02-13 2002-08-15 Rajankikant Jonnalagadda Isolation and flow direction/control plates for a heat exchanger
US20060291523A1 (en) * 2005-05-10 2006-12-28 Robert Johnson Fluid-cooled duct
US11535904B2 (en) * 2018-08-01 2022-12-27 Paul Wurth S.A. Cooling box for a shaft furnace

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2546142B2 (de) * 1975-10-15 1978-04-06 Gerhard 7601 Willstaett Fuchs Deckel für Elektroöfen
JPS5420171U (enrdf_load_stackoverflow) * 1977-07-12 1979-02-08

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US572143A (en) * 1896-12-01 Bosh-plate
FR782954A (fr) * 1934-05-31 1935-07-05 Gutehoffnungshuette Oberhausen Boîte réfrigérante pour fours à cuve, et en particulier pour hautsfourneaux
US2311819A (en) * 1940-08-01 1943-02-23 Herman F Dobscha Blast furnace cooling plate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US572143A (en) * 1896-12-01 Bosh-plate
FR782954A (fr) * 1934-05-31 1935-07-05 Gutehoffnungshuette Oberhausen Boîte réfrigérante pour fours à cuve, et en particulier pour hautsfourneaux
US2311819A (en) * 1940-08-01 1943-02-23 Herman F Dobscha Blast furnace cooling plate

Cited By (11)

* 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
US4157816A (en) * 1976-12-08 1979-06-12 S.A. Des Anciens Etablissements Paul Wurth Shaft furnace cooling
US4245982A (en) * 1978-06-12 1981-01-20 Paul Wurth S.A. Cooling box for shaft furnaces
US4245572A (en) * 1979-05-30 1981-01-20 Sharp Kenneth C Furnace cooling system
US4619442A (en) * 1983-05-26 1986-10-28 Nippon Kokan Kabushiki Kaisha Cooling box for steel making furnaces
US4753192A (en) * 1987-01-08 1988-06-28 Btu Engineering Corporation Movable core fast cool-down furnace
US6216797B1 (en) 1999-01-11 2001-04-17 Case Corporation Thrust system for a horizontal directional drill
US20020108741A1 (en) * 2001-02-13 2002-08-15 Rajankikant Jonnalagadda Isolation and flow direction/control plates for a heat exchanger
US6866093B2 (en) 2001-02-13 2005-03-15 Honeywell International Inc. Isolation and flow direction/control plates for a heat exchanger
US20060291523A1 (en) * 2005-05-10 2006-12-28 Robert Johnson Fluid-cooled duct
US11535904B2 (en) * 2018-08-01 2022-12-27 Paul Wurth S.A. Cooling box for a shaft furnace

Also Published As

Publication number Publication date
DE2041339B2 (de) 1977-11-24
JPS5236961B1 (enrdf_load_stackoverflow) 1977-09-19
GB1325537A (en) 1973-08-01
DE2041339A1 (de) 1971-02-25
SU403199A3 (enrdf_load_stackoverflow) 1973-10-19
ZA705680B (en) 1971-04-28
NL7012296A (enrdf_load_stackoverflow) 1971-02-23
DE2041339C3 (de) 1978-07-06
CS157681B2 (enrdf_load_stackoverflow) 1974-09-16
CA932959A (en) 1973-09-04
NL165547C (nl) 1981-04-15
NL165547B (nl) 1980-11-17
AT315215B (de) 1974-05-10

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