KR20090010235U - Tiltable converter - Google Patents

Abstract

The present invention relates to a novel converter brace. The support of the converter container 1 of the loading ring 2 is carried out by a plurality of connecting members 9, which determine the position of the converter container in the loading ring. For this purpose, the plurality of connecting members 9 are formed by a disk pack 10 arranged at the bottom of the loading ring 2 in an evenly distributed manner, and at the opposite end sections 10a, 10b. (2) and to the connecting member 9. Advantageous new converter braces are made in that an additional number of connecting members 9 are formed by the pendulum rod 11, the pendulum rod 11 being connected to the loading ring 2 at one end and to the converter vessel at the other end. It is pivotally connected to (1).

Description

Tiltable Converter {TILTABLE CONVERTER}

The invention relates to a tiltable converter comprising a trunnion ring, which trunnion ring surrounds the converter container at a distance therefrom and has two oppositely opposing support pins, in this case the converter container. Is supported at the trunnion ring by a plurality of connecting members, the plurality of connecting members are formed by a lamella assembly, which is disposed on the bottom of the trunnion ring and at the opposite end to the trunnion ring and to the converter vessel. Is fixed to.

Converters are tiltable metallurgical vessels in which liquid metals and metal alloys are fabricated and processed. During operation, these converter vessels are exposed to high thermal loads that induce significant thermal expansion and deformation. Thus, the trunnion ring surrounds the converter container at a predetermined distance therefrom. In the case of today's customary converter sizes, there are not only thermal loads but also additional high weight loads at the connecting members, in which case these loads vary depending on the inclined position of the converter vessel. Therefore, the connecting member must be arranged so that no overloading occurs on the individual connecting member in the operating position of the converter container. In addition, the connecting member should be arranged to be widely protected against slag discharge from the converter mouth. In order to meet these requirements broadly, a series of connecting members or systems of connecting members connecting the converter vessel to the trunnion ring are already known from the prior art in different embodiments.

One known embodiment of the converter brace system in the trunnion ring comprises a plurality of lamella members distributed over the perimeter of the bottom of the trunnion ring and connecting the converter vessel with the trunnion ring. Bracing systems of this type are already known from DE 19 03 685 B2 and EP 1 061 138 B1. It is also known from DE 19 03 685 B2 that the circumferential support for the converter container on the top of the trunnion ring is fitted without play between the junctions on the trunnion ring in the circumferential direction. This ensures reliable support of the converter vessel in the tilted position. While this solution allows the circumferential support to move in the radial direction, the force of the circumferential support or deviation from the exactly round shape of the converter vessel induces a constraining force that can cause a crack at the junction. EP 1 061 138 B1 discloses a vessel guide, which vessel guide has the same effect and allows radial movement and is formed by guide walls, which guide walls and guides and trunnion rings are guided without gaps between them. Projected upward on the upper chord.

DE 29 31 671 A1 discloses a converter brace system, which implements the principles of the lamella brace system described above and takes advantage of the different design precision of the connecting members. This member is pivotally coupled to the converter vessel and with the trunnion ring and can be adjusted to various distances and is formed by screw bolts or by triangular links. Since the plurality of connecting members are distributed over the perimeter of both the top and bottom of the trunnion ring, the converter variation involves a more complex assembly, which is the crust along the slag and steel deposits on the connecting member arranged on the top of the trunnion ring. still more difficult by incrustation and dust.

DE 27 39 540 A1 discloses a converter brace system artically connecting the trunnion ring to the converter vessel and formed of a system of pendulum rods and triangular links distributed on and above the bottom of the trunnion ring. In this case, the connecting member is arranged to ensure the support and the most uniform possible load distribution of the converter in various inclined positions and in the vertical blowing position of the converter. In the development of this known embodiment, all the connecting elements, preferably 6 or 7, are designed as pendulum bars and they are arranged in the region on the bottom of the trunnion ring which is protected against crust. It is known from DE 43 27 640 A1. As a result of the statically determined prop of the converter vessel in the trunnion ring, this embodiment is currently the best solution for the converter prop system.

DE 33 41 824 A1 discloses a converter brace system in which the converter vessel is supported by support pins in a suspended manner in a hollow bearing displaceable in the support frame. A prestressed flexible tension member arranged parallel to the converter center axis connects the hollow bearing to the support frame. Tension members for cross fastening vertically aligned with respect to the tension member support the converter in its lower position and absorb the tension force. Both the tension element and the tension element for cross fastening are exposed to undesirable bending stress at all tilted positions in the upright converter position and in the lower position.

The present invention aims to avoid the disadvantages and difficulties described above, and is based on the purpose of providing a tiltable converter of the type described in the overview, which is a radially compliant adaptation of the advantages of a pendulum rod brace system. It combines the advantages of a converter with a compliant lamella brace system, which is known as the VAI-CON link brace system.

According to the invention, this object is achieved in that not only the connecting member formed by the lamella assembly but also an additional number of connecting members are formed by a pendulum rod artically connected to the trunnion ring at one end and to the converter container at the other end. .

Each individual lamella assembly comprises at least two lamellas, which are spaced apart from each other and securely fixed to the converter vessel when the converter vessel is upright and to a support bracket on the bottom of the trunnion ring. The lamella assemblies are aligned and arranged based on the generatrices of the imaginary cone surface, their vertical axis corresponding to the converter axis and their busbars converging downwards. This arrangement allows the converter to move radially in the trunnion ring. The additional pendulum rod absorbs radial force, which occurs during the tilt movement and in the tilted position, supporting the converter vessel on the trunnion ring. In this case, the pendulum rods may be arranged on top or bottom, etc. on both sides of the trunnion ring. An additional advantage of the combination of the lamella brace system and the pendulum rod brace system is that the pendulum rod must absorb lower forces than in a comparable converter brace system formed exclusively by the pendulum rod.

These advantages include pendulum on top or bottom of the trunnion ring in the region of each support pin which is approximately perpendicular to the tilt axis of the converter vessel formed by the support pin and approximately parallel to the plane formed by the trunnion ring. This is particularly evident when the bars are arranged. Depending on the direction of inclination, a tensile or compressive force is induced to the pendulum bar.

According to a particular embodiment, the pendulum rod is fixed with a converter container and trunnion ring in the area forming a gap between the adjacent lamella assemblies in a vertical projection in the direction of the converter axis.

In order to obtain the maximum possible protection for the crust of the connecting member, a pendulum rod is arranged on the bottom of the trunnion ring between directly adjacent lamella assemblies.

The two pendulum rods are preferably articulated with trunnion rings at one end and converter vessels at the other end.

In order to ensure the spatial mobility of the pendulum rod and to reject the inflow of bending forces, the pendulum rod is articulated by the spherical bearing to the converter vessel and to the trunnion ring.

Further advantages and features of the present invention are apparent from the description of the following non-limiting exemplary embodiments, reference is made to the accompanying drawings.

1a shows a converter vessel in a vertical operating position with a converter brace system according to the present invention in a first embodiment.

FIG. 1B shows the converter vessel in cross section along line A-A in FIG. 1A.

FIG. 2A shows a converter container in a vertical operating position with a converter brace system according to the present invention in a second embodiment.

FIG. 2B shows the converter vessel in cross section along line A-A in FIG. 2A.

3 shows a cross section through a lamella brace system along line B-B in FIGS. 1B and 2B.

FIG. 4 shows a pendulum rod brace system as seen along direction C of FIG. 1B.

1a, 1b, 2a, 2b show a converter container 1 surrounded by a closed trunnion ring 2 having a box-shaped cross section, in which case the trunnion ring is arranged spaced apart from the converter container. The trunnion ring 2 is mounted such that it can be tilted at the support bearings 5, 6 by means of two oppositely arranged support pins 3, 4 flush with each other. When the converter container 1 is standing upright, the vertical converter axis is indicated by (7), and the horizontal tilt axis is indicated by (8). At least one of the support pins is connected to a tilting drive (not shown).

A connecting member 9 is provided to secure the converter container 1 to the trunnion ring 2, which connection member pendulum rod (depending on their position on the trunnion ring 2 and on the converter container 1). 11) or by lamellar assembly 10.

When the converter container is upright, the lamella assembly 10 is located on the bottom of the trunnion ring 2 and distributed over the circumference of the converter container 1. The trunnion ring 2 and the converter vessel 1 are assigned to the fixing brackets 12, 13, to which the lamella assembly 10 is preferably connected by a releasable screw connection (FIG. 3). It is firmly fixed at the ends 10a and 10b. Each lamella assembly 10 is made of two or more lamellaes 14 with interposed shims 15 as shown and acts like a bending spring arrangement.

The two pendulum rods 11 are approximately perpendicular to the tilt axis 8 of the converter vessel 1 formed by the support pins 3 and 4 and approximately parallel to the plane formed by the trunnion ring 2. It is arranged below or above the trunnion ring 2 (FIG. 2A) or above the trunnion ring 2 (FIG. 1A) on or under the trunnion ring 2 in the region of the support pins 3, 4. The pendulum rod 11 is supported in articulated manner in the spherical bearing 18 of the converter container 1 and of the fixing brackets 16, 17 of the trunnion ring 2, when the converter is tilted. Exclusively absorbs tensile or compressive forces (FIG. 4). The pendulum rod 11 and associated fixing brackets 16, 17 are located in the sector region D between the adjacent lamella assemblies 10 in a vertical projection in the direction of the converter shaft 7 (FIG. 2B).

When the converter is in the vertical position, the weight force of the converter vessel and its load are absorbed by the lamella assembly of the lamella brace system in an almost almost uniformly distributed manner and transferred to the support frame. In different tilted positions (charging position, emptying position), the weight force is absorbed into the support frame to a different degree by the lamella assembly of the lamella brace system and by the pendulum bar of the pendulum rod brace system. Delivered.

Claims (6)

Tiltable converter, A trunnion ring 2 surrounding the converter vessel 1 at a distance from the converter vessel 1 and having two diametrically opposite support pins 3, 4, The converter container 1 is supported at the trunnion ring 2 by a plurality of connecting members 9, and a plurality of connecting members 9 are arranged on the lower part of the trunnion ring 2. Formed by (10) and fixed to the trunnion ring (2) and the converter vessel (1) at opposite ends (10a, 10b) thereof, An additional number of connecting members 9 is characterized by a pendulum rod 11 artically connected to the trunnion ring 2 at one end and to the converter vessel 1 at the other end, Tiltable converter. The method of claim 1, The pendulum rod 11 is approximately perpendicular to the inclination axis 8 of the converter vessel 1 formed by the support pins 3 and 4 and about the plane formed by the trunnion ring 2. It is characterized in that it is arranged on the top or bottom of the trunnion ring 2 in the region of each support pin 3, 4 in parallel, Tiltable converter. The method according to claim 1 or 2, The converter container 1 in the sector region D in which the pendulum rod 11 forms a gap between the directly adjacent lamella assemblies 10 in a vertical projection in the direction of the converter axis 7. And fixed to the trunnion ring 2, Tiltable converter. The method of claim 3, wherein Characterized in that the pendulum rod 11 is arranged at the bottom of the trunnion ring 2 between the directly adjacent lamellar assemblies 10, Tiltable converter. The method according to any one of claims 1 to 4, The pendulum rod 11 is characterized in that it is articulated by the spherical bearing 18 to the trunnion ring 2 and to the converter vessel 1, Tiltable converter. The method according to any one of claims 1 to 5, It is characterized in that two pendulum rods 11 are connected to the trunnion ring 2 and to the converter vessel 1, Tiltable converter.

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