SU1759888A1 - Device for removing converter gases - Google Patents

Abstract

The invention relates to metallurgy, in particular to equipment for removal of gases from the converter. Summary of the invention: On the outer surface of the inner cylinder (C) 3 of the caisson 2, solid stiffening ribs (SRF) 7 are mounted, connected by rods with (C). In the area of the tuyere window (FD), 9 stiffening ribs are made in the form of split rings (RK), mating with beams that are connected through forks and stops with SRZH 7. RK and SRZH in the FD region are fixed from movements in the axial direction relative to the C console. . 1 hp ff, 4 ill.

Description

The invention relates to the metallurgical industry, namely to equipment for the removal of gases from the converter.

A device for diverting converter gases, made in the form of two concentric tubes with trough-shaped profiles welded to the inner tube, is known.

It is also known a device for removal of converter gases, made in the form of two concentric tubes with stiffeners, between which coolant is supplied.

However, the placement of such annular stiffeners in the area of the oxygen lance window leads to a loss of wall stability, an increase in its thickness, which reduces the service life of the device and limits the intensity of purging the converter bath with oxygen.

The aim of the invention is to increase the reliability and service life of the device.

For this, the device for removal of converter gases, containing a gas cooler and a caisson made in the form of concentric tubes with a tuyere window, is equipped with beams placed along the tuyere window, consoles, and the stiffeners around the tuyere window are made split, and the beams are coupled with annular and split stiffeners with the possibility of their relative movement parallel to the axis of the caisson, with the stiffening ribs connected to the inner cylinder of the caisson by means of consoles with the possibility of their relative n remescheni perpendicular to the axis of the caisson

The connection of the beams with stiffeners is made in the form of forks attached to the beams and covering stiffeners, and

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the latter are equipped with lugs interacting with forks.

Figure 1 shows the proposed device; figure 2 is a view of And figure 1; fig.Z - node I in figure 1; figure 4 - section bb in figure 1.

The device consists of a cooler 1 of converter gases and a caisson 2, which is a double-walled pipe. The inner cylinder (pipe 3) of the caisson 2 is connected to the outer cylinder (pipe) 4 in the lower part of the semi-pipe 5, and in the upper compensator 6.

On the outer surface of the inner cylinder 3, stiffening ribs are installed, which are made in the form of concentric rings 7 connected by rods 8 with the inner cylinder 3.

The rods 8 are located around the circumference of the ring 7 at some distance from each other. In the area of the tuyere window 9, the reinforcement ribs are made in the form of split rings 10 that mate with beams 11, which are connected to annular stiffening ribs 7.

The connection of the beams 11 with stiffening ribs 7 and 10 is made in the form of forks 12, which include the stops 13 of the beams 11, and stiffening ribs 10. Split stiffening ribs 10 and annular stiffening ribs 7 in the area of the tuyere window 9 are fixed from movements in the axial direction relative to inner cylinder 3 cantilever 14.

The device works as follows.

In the region of the tuyere window 9, the load from the coolant pressure on the inner cylinder 3 through the rods 8. Split rings 10, beams 11 is transferred to annular stiffening ribs 7. During metal purging, the inner cylinder 3 heats up, elongates in axial and radial directions. The stiffeners 10 of the console 14 move with their stops 13 relative to

forks 12 and beams 11, and the latter relative to forks of the annular ribs of chevnostki 7; consoles 14 move radially relative to stiffeners 7

and 10.

Unloading the inner cylinder 3 in the area of the tuyere window 9, as well as compensating for the relative temperature displacements of the elements of the caisson, gives

the ability to reduce the wall thickness of the inner cylinder, to reduce the temperature stress in the latter, to increase the service life of the device and the intensity of the metal purging with oxygen.

Claims (2)

1. A device for removal of converter gases containing a gas cooler and a caisson made in the form of concentric tubes with a tuyere window and annular stiffening ribs located on the outer surface of the inner cylinder of the caisson, characterized in that, in order to increase the reliability and service life of the device, it is provided with beams placed along the tuyere window, with consoles around the tuyere window stiffnesses are split, and the beams are coupled with annular and split stiffening ribs with the possibility of their relative movement parallel to the axis of the caisson, with the stiffening ribs connected to the inner cylinder of the caisson by means of consoles with the possibility of their relative movement perpendicular to the axis of the caisson. 2. Device pop. 1, characterized in that the connection of the beams with stiffening ribs is made in the form of forks attached to the beams and covering the stiffening ribs, and the latter are provided with lugs cooperating with the forks. dida i2 Rig.Z 6-5 FIG. H