SU1216203A1 - Vertical cooler of blast furnace - Google Patents

Description

one

The invention relates to black metal, in particular to cooling devices of blast furnaces.

The purpose of the invention is to increase the drainability of the refrigerator by reducing the stresses in the cooling tubes during thermal deformations.

1 shows a refrigerator, front view; figure 2 is the same, side view; on fig.Z - node I in figure 2.

The device comprises a metal plate 1f a cooling tube 2 with a vertical working 3 and a lead 4, consisting of a radius 5 and a horizontal 6 sections, equipped with a protective cover 7, made of a straight line and, and a radius b sections. The gap o1 between the outlet part of the tube 2 and the casing 7 is (0.004-10, 005) L, where L is the length of the refrigerator plate. The restrictive ring 8 is located at the point of transition of the radial part 5 of the tube output to the vertical working part 3.

From the outer side of the blast furnace, the gap between the end of the protective casing 7 and the horizontal section 6 of the discharge part 4 of the tube 2 is sealed with a centering ring 9 and sealing mass 10. In the present invention, the protective cover covers the coil outlet on the forward and radius sections with a clearance ci, the value which is determined from the extreme operating conditions of the refrigerator

When operating a vertical plate cooler in a blast furnace, average body temperature fluctuations

162032

The cast iron plate is tL.250 ° C. In this case, the steel coil is not heated above 100 ° C, since it is continuously cooled with water. The heat elongation D of the cast iron grit relative to the steel tube is determined from the known formula

I

where (

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j

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B

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10 is the coefficient of thermal linear expansion of cast iron at 1 "d P, 910 is the coefficient of heat

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five

0

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The linear linear expansion of steel at tjM L is the length of the plate, equal for the convenience of calculation, the length of the coil branch.

The body elongation of the plate, and, accordingly, the gap between the cooling tube and the protective jacket, is composed of the indicated formula (0.004-U, 005) L, the length of the plate, i.e. and, 00371 L.

The restrictive ring 8 provides the gap d between the casing 8 and the output of the coil 4, preventing the cast iron from entering the gap during the casting of the refrigerator.

The proposed refrigerator structure is more durable than the well-known, reliable in operation, does not require periodic inspection and repair, and also ensures the safe operation of the blast furnace.

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Compiled by R.Seifulov. Editor I. Derbak Tehred Z.Kastelevich Proofreader M.Samborska

Order 962/29 Circulation 552 Subscription

VYUSH USSR State Committee

for inventions and discoveries 113035, Moscow, F - 35, Raushsk nab., 4/5

Branch ShSh Patent, Uzhgorod, st. Project, 4

Claims (1)

VERTICAL BLAST FURNACE REFRIGERATOR containing a vertical plate, cooling tubes, a tube outlet assembly, a protective casing, characterized in that, in order to increase the resistance of the refrigerator by reducing stresses in the cooling tubes during thermal deformations, the protective casing is located with a gap with respect to the outlet part of the tube and a casing equal to 0.004 - 0.00'5 of the length of the plate, and a restrictive ring is installed between the tube and the casing. SU „„ 1216203> 1 1216203 ϊ