US3526396A

US3526396A - Assembly for restricting the movement of a blast furnace cooling plate

Info

Publication number: US3526396A
Application number: US730741A
Authority: US
Inventors: Leon C Paulus
Original assignee: Bethlehem Steel Corp
Current assignee: Bethlehem Steel Corp
Priority date: 1968-05-21
Filing date: 1968-05-21
Publication date: 1970-09-01
Anticipated expiration: 1987-09-01

Description

pt 1970 c. PAULUS ASSEMBLY FOR RESTRIGTING THE MOVEMENT OF A BLAST FURNACE COOLING PLATE Flled May 21, 1968 CD H7 INVENTOR LEON C. PAULUS United States Patent Oflice 3,526,396 Patented Sept. 1, 1970 US. Cl. 266-32 2 Claims ABSTRACT OF THE DISCLOSURE A cooling plate, having a pair of lugs at the outer end thereof, extends through a collar and is embedded in the refractory wall of a blast furnace. Movement of the cool ing plate is restricted by providing, for each lug, a retainer plate having a laterally extending stud positioned in said lug and a lock plate secured to said retainer plate and to said collar.

BACKGROUND OF THE INVENTION This invention relates to an assembly for restricting the movement of a cooling plate embedded in the refractory wall of a blast furnace. More particularly, this invention relates to such an assembly which is adapted to be used with any of the cooling plates embedded in said wall, irrespective of small variations in the distance between the outer end of the cooling plate and the outer surface of the wall.

A blast furnace broadly comprises a refractory wall, of varying thickness from top to bottom, having a steel shell therearound. In order to prevent the wall from overheating, a plurality of water-cooled cooling plates is embedded therein. The steel shell is provided with openings aligned with said cooling plates to provide access thereto for repair or replacement thereof. A flanged collar surrounds each cooling plate and is secured to the outside of the steel shell.

It is desirable for the inner end of each cooling plate to be substantially the same distance from the inner surface of the refractory wall. Because of the variation in thickness of the Wall from top to bottom, the cooling plates are generally made to several difierent lengths whereby the distance from the outer ends thereof to the outer surface of the wall does not vary greatly.

It is broadly old to provide a blast furnace with means' SUMMARY OF THE INVENTION I have discovered that the foregoing object can be attained by providing each cooling plate with a pair of retainer plates, each of said retainer plates being sufficiently long to extend outwardly of said collar, and a pair of lock plates, each of said lock plates being rigidly atfixed to one of said retainer plates and to said collar.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an end elevation of a cooling plate, provided with retainer plates and lock plates, extending through a collar.

FIG. 2 is a sectional view taken along the lines 2--2 of FIG. 1.

FIG. 3 is a plan view, partly in section, of a cooling plate provided with retainer plates and lock plates.

FIG. 4 is a side elevation of a retainer plate, while FIG. 5 is a plan view thereof.

DESCRIPTION OF THE PREFERRED EMBODIMENT The refractory wall 10 of a blast furnace is provided with a steel shell 12 therearound having a plurality of openings therein. One such opening 14 has a collar 16 extending therein. The collar 16 has a peripheral flange 18 which is secured to the outside of the shell 12, e.g., by bolts 20. A cooling plate 22 extends through the collar 16 and is embedded in the refractory wall 10.

The cooling plate 22 comprises a hollow casting provided with two lugs 24 at the outer end thereof, said lugs having horizontally aligned openings 26 therein. Within the cooling plate is a plurality of partitions 28 providing passages 30 through which a coolant, e.g. water, may be circulated. To this end, the cooling plate is provided with inlet and

outlet pipes

32 and 34, respectively. The cooling plate 22 is sealed in the collar 16 by a packing 36 which is disposed between the cooling plate and a medial flange 38 in the collar 16.

The movement of each cooling plate is restricted by providing said plate with a pair of retainer plates 40 and a pair of lock plates 42. Each of the retainer plates is provided with a laterally extending stud 44 which is adapted to be positioned in the opening 26 in the lug 24. It is essential that the retainer plates be sufliciently long to extend outwardly of the collar 16.

To install the retainer plates 40 and the lock plates 42, the stud 44 of the retainer plate 40 is first positioned in the opening 26 of the cooling plate lug 24. The retainer plate 40 is then placed in a substantially horizontal position, and the lock plate 42 is rigidly aflixed thereto, as by welds 46, and to the collar 16, as by welds 48.

I claim:

1. In a blast furnace comprising a refractory wall having a steel shell therearound, said shell having an opening therein, a flanged collar secured to the outside of said shell and extending into said opening, and a cooling plate extending through said collar, said plate being provided at its outer end with a pair of lugs having openings therein, an assembly for restricting the movement of said plate compnsmg:

(a) retainer plates, each of said plates extending outwardly of said collar and having a laterally extending stud positioned in one of said openings in said lugs, and

(b) lock plates, each of said plates being rigidly affixed to one of said retainer plates and to said collar.

2. In a blast furnace comprising a refractory wall of varying thickness from top to bottom, said wall having a steel shell therearound having a plurality of openings therein, each of said openings having a flanged collar secured to the outside of said shell and extending into said opening, a cooling plate extending through each of said collars, the inner end of each of said plates being spaced substantially the same distance from the inner surface of said wall whereby the outer ends of said plates are varying distances from the outer surface of said Wall depending upon the thickness of said Wall and the length of the cooling plate, the outer end of each of said plates being provided with a pair of lugs having openings therein, an assembly for restricting the movement of said cooling plates comprising:

(a) a plurality of retainer plates, each of said plates extending outwardly of said collar and having a laterally extending stud positioned in one of said openings in said lugs, and

References Cited UNITED STATES PATENTS 11/1955 Anderson et al. 26632 5/1965 Patton 266-62 10 J. SPENCER OVERHOLSER, Primary Examiner J. S. BROWN, Assistant Examiner