SU1222678A1 - Blast furnace jacket - Google Patents

Description

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The invention relates to the field of metal metallurgy, in particular to blast furnaces or other metal-type shaft-type furnaces with cooling plates.

The aim of the invention is to improve the repairability and increase reliability.

FIG. t shows a furnace with a casing, a common B1Sch1 pas figs, 2-4 casing assemblies with replaceable sealing elements of different designs.

The furnace contains a goat 1 and a lining 2 with a cooling system. The sleeves 3 with a flange are inserted into the holes formed in the skin: h: e 1, and welded to the inner surface of the casing around the perimeter of the weld 4,

The sleeves 3 are made of the usual low carbon cranii grades for welded structures, the welding of which does not cause any technological difficulties: for example, with the contiguous controlled heating.

However, the welding of the sleeves to the casing by the weld seam 4 is carried out according to the technology required for the metal of the casing; however, the seams are made once in the construction process. The thickness of these seams is determined by the calculation depending on the type of fastening of the cold plates (not indicated) J, but they are not less than 10-12 mm thick.

Refrigerant pipes 5 (they may be lead-in or discharge or protective, depending on the design of the cooling system) are passed into the openings of the sleeves with flanges. Sealing is performed by replaceable elements 6, 7 or 8 of the seal, con

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the structural form of which depends on the method of fastening the cold plates to the furnace shell,

Replaceable sealing elements 6 in the form of flat sheets (FIG. 2) are used in the case when the construction practically does not ensure the incompatibility of the cooling plates, and consequently, the tubes 5; relative to the casing 1, while the element 6 can simultaneously perform the functions of fastening the coolers to the casing.

Replaceable sealing elements 7 in the form of elastic convex washers (Fig. 3) are used when the design provides for small angles of rotation or radial; 1e the movement of the cooling plates, and hence the tubes 5, relative to the casing 1 sleeves 3 (displacement within 10 mm).

Replaceable sealing elements 8 in the form of bellows expansion joints (Fig. 4) are used in case the blast furnace designs envisage significant movements of the cooling plates, and consequently, the tubes 5, relative to the casing 1 and to the pulley 3 ,.

During the repair process, when replacing the cold plates with tubes 5, the sealing elements are also replaced. When nzg. Removing and reinstalling the ke requires touching the thick metal of the housing 1 o All the incisors of the welded joints 9 and 10 and re-restoring them are essential; this is the result of the flanges of the stationary bushings.

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Fig.Z

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Editor T. Kugrysheva

Order 1669/24 Circulation 552 Subscription

VNIIPI USSR State Committee

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

Branch PPP Patent, Uzhgorod, Proektna St., 4

. FIG. if

Compiled by R.Seifulov

Tehred I. Popovich. Proof-reader I.Erdeyi

Claims (1)

BLAST FURNACE HOUSING, containing stationary sealing elements fixed in the holes of the casing, and replaceable sealing elements for tubes of refrigerating plates, characterized in that, in order to improve maintainability and reliability, the stationary sealing elements are made in the form of bushings with flanges, and between the flange bushings and the casing made a gap, and replaceable sealing elements are hermetically attached to the flanges of the bushings about fng. 1 II