SU1444352A1 - Support system for replacing blast furnace dome - Google Patents

Abstract

The invention relates to the field of construction, in particular to the reconstruction of blast furnaces, and can be used in the reconstruction and overhaul of other shaft furnaces. The aim of the invention is to reduce the metal consumption and shorten the reconstruction time of the furnace. The reference system works as follows. Prior to stopping the furnace, temporary supports T are mounted on the gas outlets 2, elements 5 release the gas outlets 2 and the pile driver 4. Then they install the supports 7 and unite them with links in pairs between themselves and the connections to the ring platform 11. After the furnace is stopped, the charging device is dismantled and support the gas outlets 2 on the beams 3. Then the gas outlets 2, the brackets 9 and the top plate 6 are cut. After replacing the dome casing 16, the top furnace 15 and restoring the brackets 9, the top site 6, the temporary supports 1 are removed. and 7 with sv. 5 il. i (L

Description

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The invention relates to the construction, in particular to the reconstruction of blast furnaces, and can be used in the reconstruction and major repairs of other shaft furnaces.

The purpose of the invention is to reduce metal consumption and shorten the time of reconstruction of furnaces.

Fig. 1 shows the support system, a general view; Fig, 2 is a section aa in Fig, 1 on the annular platform | on fig.Z - section bb in figure 2; FIG. 4 shows a section B-B in FIG. 24, FIG. 5, node 1 in FIG. 1,

The support system for replacing the blast furnace dome contains temporary supports 1 mounted on gas outlets 2 in their upper part, with which gas outlets 2 through beams 3 of the balance areas are supported on the pile driver 4, the gas outlets 2 are fastened with elements 5 to the pile head 4 and the top plate 6, On the same axis with the uprights of the frame of the frame 4, temporary stands are installed. ki 7, Racks 7 with the upper end rigidly attached to the knotted gusset 8 of the existing bracket 9 of the top plate 6 and the lower end are supported by means of the brackets 10 on the furnace shaft at the level of the annular platforms P and 12 ,. The ring pads And and 12 form stiffening ribs in places where the concentrated loads on the casing from the brackets 10 are transmitted. The pillars 7 are separated by vertical links 13 in pairs between each other and links 14 to the ring platform 11, located under the throat 15, on which rests dome 16.

The support system works as follows,.

Before stopping the stove at the gas outlet 2g of gas, gas mounts temporary support I, fix the gas outlet 2 by elements 5 to the pile head 4 and the top site 6, then install the time stands 7 and fix them by connections 13 in pairs with each other and connections 1.4 to the ring site AND

.After stopping the furnace, the charging unit is dismantled and gaeo conductor 2 is supported on beams 3 of the balancing platforms (support must be made simultaneously at the casing temperature in the area of the morator-50 C),

Then, cutting is performed according to the plugs of the gas outlets 2 and crown elements.

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matte 9 and top site 6, the cut is produced according to a technology that ensures uniform load transfer to the temporary support system. The stability of the support system is ensured by the rigidity of the top site 6, the setting of the vertical links 13 between the uprights 7 and the isolation of the remaining casing of the furnace shaft.

Thus, the load from the gas outlets 2, the top site 6 is transmitted through the temporary supports 7 and the brackets 10 to the remaining casing of the blast furnace.

After replacing the dome cover 16, blast furnace top furnace 15 and restoring elements of the brackets 9, top plate 6, open the temporary supports 1 of the gas outlets 2 to the beam 3 of the balancing platforms. The elements 5 of the gas offtakes 2 are removed to the pile driver 4 and the top plate b, the stands 7 are dismantled from the pipes with connections 13 and 14,

The application of the invention makes it possible to reduce the metal content of the support system by 30% and reduce the time needed for the reconstruction of the blast furnace by reducing the labor intensity of manufacturing and installation of the temporary support system.

Claims (1)

Invention Formula The support system for replacing a blast furnace dome mainly with a dome site supported on the dome, containing temporary supports connecting the gas outlets with a pile, pile head frame racks, annular platforms for the height of the shaft columns, brackets with support pieces connecting the top site with a dome, featuring the fact that, in order to reduce metal consumption and shorten the reconstruction of the furnace, the system is equipped with temporary racks installed on the same axis as the frame racks, the lower ends of which are supported by mattes casing on the furnace shaft and fixedly attached to the upper opor- HbiM luminaire brackets communication zyva- -goschih flue pad with a dome, with the isolator strut are attached vertical linkages interconnected in pairs and associated with an annular pad disposed under the furnace throat. Axis and side HOKfioHf ozo fioc / na I .7 C) and Mr. fig.z FIG. Editor M.Nedoluzhenko Compiled by V. Korobov Tehred M. Khodanych Order 6456/27 Circulation 545 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 FSH.5 Corrector S.Cherni Subscription