SU929798A1 - Supporting arrangement for blast furnace operation - Google Patents

Description

(54) SUPPORT DEVICE FOR REPAIR OF A DOMAIN FURNACE

I

The invention relates to blast furnaces and blast furnaces and can be used for blast furnaces with the replacement of the mine casing.

The support device dp of the blast furnace's corpus is designed so that it supports the furnace around the casing of its shaft above the center of gravity of the furnace body so as to support the refractory (} lining of the furnace. At the same time, the supporting elements themselves are retained by means of numerous racks supported on the foundation tlj

However, the device does not allow replacement of the furnace shell.

Also known are the supporting structures of a shaft furnace, consisting of columns and a ring supported on columns through elastic elements, in order to absorb the load on the furnace body 2.

However, these designs are predestined for operation during the operation of the furnaces.

And the shortening of the period of capital repair is not relevant.

The closest to the inventive temporary support device, containing the columns of the mine and the forge, sm & scaled relative to each other, ring beam and column pillars of the mine. Moreover, the ring beam is made of channel section and consists of a moratoric ring, a section of the furnace shell

10 below the morator and the support ring, npw-. attached to the casing horn around the perimeter. Undergrounds of the mines of the mines are pushed up 3.

15

The disadvantage of the supporting device I is the large labor input during the installation, since the ring beam is mounted on the mountain casing during the post-dwell period.

20

In addition, a large volume of welds is laid out in the hearth casing, furnaces, and the voltage concentrators remain in place where the stress concentrators are retained after demobilizing the syringe. The device is laborious and increases the period of overhaul of the blast furnace. The purpose of the invention is to coKpamemie the time period for the overhaul of a blast furnace by reducing the labor intensity and the preparation and installation of the structure of the supporting device and installing it in the rest period. The goal is achieved by the fact that in the supporting device of a blast furnace containing mine and hearth columns, relative to each other, a ring beam, a morator ring and shaft sub-axles and a furnace shell, the ring beam is made independently of the furnace shell and is equipped with intermediate columns. the column pillars of the shafts are equipped with struts resting on the horn pillars and intermediate stands. FIG. 1 shows schematically a scan of a support device of a divided furnace; in fig. 2 is a furnace with a supporting device, a general view in section,: in FIG. 3, a plan for the annular bale. The autonomous ring beam 10 is installed independently of the casing 2 of the ropfra under the morator ring 3 and rests on the pillars 4 of the forge. The subcolumns 5 of the columns 6 are equipped with struts 7 supported on the columns 4 of the hearth and the annular beam 1 through intermediate supports 8. The struts 8 and intermediate supports 8 are fastened with a moratorium spear 3. When replacing part of the housing 9 of the shaft between the columns 6 of the mine and the remaining part of the housing 9 of the mine brackets installed 1O. An autonomous lance beam 1 rakkrishena links 11 to the casing 2 of the hearth. To form the sump 12 in the furnace casing 2, one element of the annular beam 1 is lowered lower and one intermediate column 8 is made longer. With this solution, the loads from the columns 6 of the shaft are transferred in the plan of the column 4 of the hearth through the struts 7, the intermediate 1st rack 8 and the autonomous ring beam 1 with a minimum eccentricity, which allows the ropim columns to be used without reinforcement. The invention allows the replacement of the casing of the furnace shaft to the level of a moratorian ring in the following order. In the rest-time period, the installation of an autonomous annular beam 1 was carried out simultaneously with the staged reorganization of the pipelines of the furnace cooling system in the area adjacent the block 1 to the columns 4 of the hearth. Intermediate posts 8 are installed on the autonomous target beam. After stopping the furnace, mount the struts 7, brackets 10 and links 11, then dismantle the existing and subsequent installation of the new shaft casing 9 with its attachment to the moratoric ring 3 and pillars 5, Ring beam 1 , struts-7, intermediate between rack 8, brackets 10 and links 11 are dismantled for reuse. The use of the proposed support device makes it possible to reduce the labor consumption and reduce the period of overhaul of the furnace. The inventive support device for the repair of the blast furnace, containing the shaft columns and the hearth, offset relative to each other, the annular beam, the morator ring and the column pillars of the shaft and the furnace shell, characterized in that, in order to shorten the overhaul time of the blast furnaces, the annular beam is exhausted independent of the furnace casing and provided with intermediate columns, and the column pillars of the shaft are provided with struts supported on horn columns and intermediate columns. Sources of information taken into account in the examination 1. US patent number 3701516, cl. C 21 B 7 / OO, 31.1O.72. 2.UK patent number 1363942, KP.S 21 V 7 / 00,28.08.74. 3.DA 1635-36, 37. Working drawings, Donbasdomnaremont. Approved 1976.

Claims (1)

Claim A support device for the repair of a blast furnace, containing mine and horn columns displaced relative to each other, an annular beam, a moratorium ring and kneecaps of mine columns and a furnace hood, characterized in that, in order to reduce the time for overhaul repair of blast furnaces, the annular beam is made autonomously from the casing of the furnace and is equipped with intermediate racks 40, and the column columns of the mine columns are equipped with struts resting on the forge columns and intermediate racks.