EP3170910B1 - Assembly for coupling a slat with a trunnion ring of a converter and converter with such an assembly - Google Patents

Description

The invention relates to an arrangement for connecting at least one blade connected to a converter vessel of a converter with a converter vessel supporting, tiltably mounted, the converter vessel radially outwardly surrounding with a game surrounding support ring of the converter, comprising at least one attachable to an underside of the support ring ring-side connection unit and at least one finned-side connection unit attachable to a free end portion of the fin.

The invention further relates to a converter with a converter vessel, a converter vessel supporting, tiltably mounted, the converter vessel radially outwardly surrounding with a game surrounding support ring, and a plurality of extending below the support ring slats arranged circumferentially distributed and each having a lower end portion with the converter vessel and an upper end portion are connected to the support ring.

A converter for a converter steelwork conventionally comprises a converter vessel and a carrying ring which carries the converter vessel and is tiltably mounted via radially outwardly pointing support pins and which surrounds the converter vessel radially outwardly with a play surrounding it. Such a converter can be used in particular for the refining of pig iron.

Out EP 1 061 138 A2 It is known to suspend a converter vessel of a converter via a plurality of circumferentially distributed around the converter vessel arranged fin suspensions on a support ring of the converter. Each lamella suspension comprises a pair of lamella, which is connected via a first mounting bracket to the support ring and a second mounting bracket to the converter vessel. The converter also comprises a vessel guide with two arranged at the top of the support ring Guide walls and a clearance guided between the guide walls guide piece that is attached via a third mounting bracket to the converter vessel. The connections between a pair of lamellae and the associated mounting brackets and the connection between the guide piece and the associated mounting bracket are detachable, whereby mechanical separation work can be omitted in the damage-related replacement of individual plate suspensions or the vessel guide or the expansion of the converter vessel. Other forms of suspension elements are for example in DE10 2009 056219 described. An object of the invention is to provide a converter with an improved connection between at least one blade connected to a converter vessel of the converter and a converter vessel bearing, tiltably mounted, surrounding the converter vessel radially outwardly with a play supporting ring of the converter.
This object is solved by the independent claims. Advantageous embodiments are specified in particular in the dependent claims, each of which taken alone or in different combinations with each other can represent an aspect of the invention.
An arrangement according to the invention for connecting at least one lamella connected to a converter vessel of a converter to a converter housing, tiltably mounted, surrounding the converter vessel radially outwardly with a play supporting ring of the converter comprises at least one attachable to an underside of the support ring ring-side connection unit and at least one fastened to a free end portion of the lamella-side connecting unit. The ring-side connection unit according to the invention comprises at least two radially spaced connection bodies, between which at least one connection receptacle is arranged, on a side facing away from the support ring a receiving opening and with respect to a radial cutting plane a having prismatically formed cross-sectional area, wherein mutually facing sides of the connecting body are each arranged inclined so that a distance between the two connecting body to each other in the direction of the receiving opening is reduced continuously. The lamella-side connection unit according to the invention comprises at least one clamping body which can be introduced via the receiving opening into the connection receptacle and has a prismatically formed cross-sectional area which continuously tapers in the direction of the lamella with respect to a radial cutting plane, a base side of the clamping body facing the support ring being shorter than a radial width of the receiving opening is trained. According to the invention, at least one clamping element at least one clamping element is arranged radially adjustable at least one connecting body, with which the clamping body in the direction of the respective other connecting body with a clamping force can be acted upon.

With the invention, an easily detachable connection between a blade and the support ring is proposed. As a result, can be used as a converter vessel for the converter, an exchange vessel, which can be suspended in a simple manner to the support ring and released from this again. In particular, to release the connection according to the invention between a lamella and the support ring, only the clamping element has to be moved away from the clamping body, whereby the clamping body is released and can be moved out of the connection receptacle via the receiving opening. There are no additional measures required to solve the connection between the blade and the support ring. Due to the simplified release of the connection between the blade and the support ring, a change of a converter vessel, in particular in the form of an alternating vessel, can be done faster, which is accompanied by a shortening of downtime of a converter plant, in particular Wechselkonverter plant. In addition, new delivery breaks can be omitted. Due to the strained connection between the clamp body and the connecting bodies In addition, a radial bias of the respective slats are achieved in order to compensate for thermal expansion of the slat can.

In comparison, in the connection according to EP 1 061 138 A2 several clamping screws are released per pair of slats in order to release the clamping element connection between a screw ring connected to the pair of slats and a clamping ring connected to the support ring via a bracket. These assembly work is significantly more complicated than the installation work required to release a connection according to the invention. Due to thermal expansion, the with EP 1 061 138 A2 proposed components of the clamping element compound subjected to bending, which is associated with increased wear. The same applies to a use of conventional, vertically oriented clamping elements, in which also relatively large trained consoles must be arranged on the converter vessel, which is associated with a high welding effort. In addition, such large consoles must be actively cooled to the converter vessel usually to prevent overheating of the consoles.

In contrast to this prior art, no corresponding wearing parts are present in the invention between the converter vessel and the support ring. The inventive design of the arrangement thermal expansion of the converter vessel can be optimally compensated. In the invention, since smaller consoles can be fastened to the converter vessel, active cooling of vessel-side consoles can be dispensed with. Damage due to temperature-induced mechanical stresses between components of the arrangement according to the invention does not occur at all or only to a negligible extent. Furthermore, the arrangement according to the invention is inexpensive to produce.

The underside of the support ring is the side of the support ring facing the floor. If the support ring is designed as a hollow profile with a rectangular cross-section, the underside of the support ring is formed by a lower flange of the support ring.

The ring-side connection unit can be firmly bonded, for example by welding, positively and / or non-positively, for example via screw, to the underside of the support ring. The ring-side connection unit is at least partially made of metal, in particular steel.

The connecting receptacle arranged between the two connecting bodies arranged radially spaced from one another may, in particular, run tangentially and, with respect to the radial cutting plane, have a cross-sectional area in the form of an isosceles trapezium. The mutually facing and oppositely inclined sides of the connecting body are preferably formed flat. The receiving opening of the connection receptacle is preferably in the region of the connecting body, in which the distance between the connecting bodies is the lowest. The receiving opening may be arranged flush with the support ring facing away from the side of the connection unit. Alternatively, the distance between the two connecting bodies following the receiving opening can increase again with increasing distance to the support ring.

The lamella-side connection unit can be cohesively, for example by welding, positively and / or non-positively, for example via screw, be attached to the free end portion of the lamella.

In order to introduce the clamping body in a simple manner over the receiving opening in the connection receptacle and to be able to lead out of this, the clamping body with respect to a radial cutting plane in the direction of the lamella continuously tapering, prismatic trained Cross-sectional area and the support ring facing base side which is formed shorter than a radial width of the receiving opening. As a result, the clamping body can be moved out of the connection receptacle by a linear movement of the clamping body in the direction of the floor. As a result, the converter vessel can be moved down together with the correspondingly connected to the support ring slats down from the support ring and replaced with another converter vessel. The cross-sectional area of the clamp body may correspond to a true-to-scale reduction of the cross-sectional area of the connection receptacle.

The radially arranged on the connecting body clamping element may for example be formed as a jaw, which is arranged at the end on an adjusting element, which is guided radially linearly movable on the connecting body, in particular in a radial bore of the connecting body. The clamping element and the adjusting element are at least partially made of metal. Two or more corresponding clamping elements may be arranged together or separately radially adjustable on the connecting body. It can also be arranged on each connecting body at least one corresponding radially engageable clamping element.

According to an advantageous embodiment, a clamping body facing the clamping side of the clamping member and cooperating with the clamping side of the clamping body according to the respective other connecting body side facing the connecting body, on which the clamping element is arranged radially adjustable, inclined. As a result, a connection produced by the arrangement between a blade and the support ring is safer.

According to a further advantageous embodiment, at least one wedging unit is arranged between the underside of the support ring and the clamping body inserted into the connection receptacle, the at least one on the The underside of the support ring attachable first wedge body and at least one cooperating, attached to the support ring facing base side of the clamp body second wedge body, wherein the two wedge body are formed such that the clamping body urged away from the support ring with progressing radial adjustment of the clamping member against the clamp body becomes. As a result, the clamping body is clamped between the wedging unit or the support ring and on the one hand a connecting body and a clamping element or on the other hand between two oppositely adjustable clamping elements, which increases the robustness of the connection between the blade and the support ring. This is particularly advantageous during a tilting operation, in which the converter vessel is tilted together with the support ring, so that the individual connections between the lamellae and the support ring are subjected to very different mechanical loads.

A converter according to the invention comprises a converter vessel, a converter vessel supporting, tiltably mounted, the converter vessel radially outwardly surrounding with a game surrounding support ring, and a plurality of extending below the support ring slats arranged circumferentially distributed and each having a lower end portion with the converter vessel and an upper end portion are connected to the support ring. According to the invention, the converter comprises at least one arrangement according to one of the aforementioned embodiments or any combination thereof via which at least one lamella is connected to the support ring.

With the converter, the advantages mentioned above with respect to the arrangement are connected accordingly. It can also be two or more, in particular all, lamellae of the converter in each case connected via a corresponding arrangement with the support ring. The converter vessel may be an exchange vessel, whereby the converter is designed as a change converter for a changeover converter system. The lamellae can be firmly bonded via individual brackets, for example by welding, in a form-locking and / or force-locking manner. For example, via screw, be connected to the converter vessel. The play between the support ring and the converter vessel serves to compensate for different thermal expansions of these components of the converter.

According to an advantageous embodiment, at least one guide body and at an upper side of the support ring at least one cooperating with the guide body guide unit are arranged on the outside of the support ring, wherein radially inwardly on the support ring in the region of the guide unit is formed a recess whose radial dimensioning is chosen such that the guide body can pass through the recess during an axial relative movement between the converter vessel and the support ring. In this way, the converter vessel can be moved out of the support ring after releasing the connections between the slats and the support ring down and replaced with another converter vessel. If no corresponding recess were present, this would not be possible because the guide body would rest on top of the support ring. The guide body can be connected directly or indirectly via a console with the converter vessel. The guide unit cooperates with the guide body in such a way that a desired relative position between the converter vessel and the support ring, which is given with respect to a longitudinal center axis or height axis of the converter vessel, is ensured. For this purpose, the guide unit may have two guide walls which are spaced apart from one another in the circumferential direction and which may be designed as guide bevels running toward each other, with which the guide body may come into physical contact. Alternatively or additionally, guide bevels can be arranged on the guide body.

According to an alternative advantageous embodiment, at least one outer console is arranged on the outside of the converter vessel, which carries an axially extending in the direction of the support ring load bolt, wherein at least on the Bottom of the support ring a radial slot is formed, in which engages the load pin. The outer console can be designed significantly smaller than a console bearing a prescribed guide body, which reduces the assembly effort, in particular welding costs.

Figur 1:

eine schematische Darstellung eines radialen Querschnitts eines an einem Konverter angeordneten Ausführungsbeispiels für eine erfindungsgemäße Anordnung in einem Verbindungszustand;

Figur 2:

eine schematische Seitenansicht eines Ausführungsbeispiels für einen erfindungsgemäßen Konverter;

Figur 3:

eine schematische Darstellung des in Figur 2 gezeigten Konverters von oben; und

Figur 4:

eine schematische Seitenansicht eines weiteren Ausführungsbeispiels für einen erfindungsgemäßen Konverter.

In the following, the invention will be explained by way of example with reference to the attached figures with reference to preferred embodiments, the features explained below being able to represent an aspect of the invention both individually and in different combinations with one another. Show it:

FIG. 1:

a schematic representation of a radial cross section of an arranged on a converter embodiment of an inventive arrangement in a connection state;

FIG. 2:

a schematic side view of an embodiment of a converter according to the invention;

FIG. 3:

a schematic representation of the in FIG. 2 shown converter from above; and

FIG. 4:

a schematic side view of another embodiment of a converter according to the invention.

In the figures, identical or functionally identical components are provided with the same reference numerals.

FIG. 1 shows a schematic representation of a radial cross section of an arranged on a converter 1 embodiment of an inventive arrangement 2 in a connection state.

The converter 1 comprises a converter vessel 3, of which in FIG. 1 only a section is shown. In addition, the converter 1 comprises a converter vessel 3 supporting, tiltably mounted, the converter vessel 3 radially outwardly surrounding with a game surrounding support ring 4, which is formed as a hollow profile with a rectangular cross-section. The support ring 4 comprises a top 5 forming a top flange 6, a bottom 7 forming a bottom flange 8 and between these enclosed side walls 9 and 10. Distributed over the circumference of the support ring 4 also comprises a plurality of reinforcing elements 11, each on the top flange 6, the Support lower flange 8 and side walls 9 and 10.

Furthermore, the converter 1 comprises a plurality of fins 12 extending below the support ring 4, which are arranged distributed circumferentially and are each connected to the lower end portion via a bracket 13 with the converter vessel 3 and an upper end portion with the support ring 4. In FIG. 1 only one of these fins 12 is shown.

In addition, the converter 1 according to the number of fins 12 umfangsverteil arranged arrangements 2, via each of which a lamella 12 is connected to the support ring 4. In FIG. 1 only one such arrangement 2 is shown.

The arrangement 2 for connecting the plate 12 connected to the converter vessel 3 via the bracket 13 to the support ring 4 comprises a ring-side connection unit 14 fixed to a bottom 7 of the support ring 4 and a lamella-side connection unit 15 attached to a free end section of the lamella 12.

The ring-side connecting unit 14 comprises two connection bodies 16 and 17 arranged radially spaced from one another, between which a connection receptacle 18 is arranged, which on a underside facing away from the support ring 4 has a receiving opening 19 and with respect to FIG Radial sectional plane has a prismatic cross-sectional area. Mutually facing sides 20 and 21 of the connecting body 16 and 17 are each arranged inclined so that a distance between the two connecting bodies 16 and 17 to each other in the direction of the receiving opening 19 is reduced continuously.

The lamella-side connecting unit 15 comprises a clamping body 22, which is introduced into the connecting receptacle 18 via the receiving opening 19 and has a prismatic cross-sectional area that continuously tapers in the direction of the lamella 12, with respect to the shown radial sectional plane. A support ring 4 facing the base side 23 of the clamp body 22 is shorter than the radial width of the receiving opening 19 shown formed.

On the connecting body 17, a clamping element 24 is arranged radially adjustable according to the double arrow 25, with which the clamping body 22 in the direction of the connecting body 16 with a clamping force can be acted upon. On the connecting body 17, a radial through hole 26 is formed, through which an actuating element 27 acting on the clamping element 24 extends. A clamping body 22 facing clamping side 28 of the clamping member 24 and cooperating with the clamping side 28 side 29 of the clamp body 22 are arranged according to the side 21 of the connecting body 17, on which the clamping element 24 is disposed radially adjustable, inclined.

Between the bottom 7 of the support ring 4 and inserted into the connection receptacle 18 clamping body 22 is a wedging unit 30 is arranged, which is attached to the bottom 7 of the support ring 4 first wedge body 31 and a cooperating, on the support ring 4 facing base side 23 of the clamp body 22 fixed second wedge body 32 has. The two wedge body 31 and 32 are formed such that the clamping body 22 against progressing in the radial employment of the clamping element 24 against the Clamping body 22 is urged away from the support ring 4. As a result, the clamping body 22 is clamped between the connecting body 16, the wedging unit 30 and the clamping element 24 and thereby securely held. The clamping body 22 also has a connecting projection 33, via which the clamping body 22 is connected to the lamella 12.

If the clamping element 24 in FIG. 1 shifted to the right, the clamping body 22 is released and can be moved according to the arrow 38 together with the converter vessel 3 down. As a result, the clamping body 22 is led out of the connection receptacle 18.

FIG. 2 shows a schematic side view of an embodiment of a converter 1 according to the invention with a converter vessel 3, a converter vessel 3 supporting, tiltably mounted, the converter vessel 3 radially outwardly surrounding with a game surrounding support ring 4 and a plurality of extending below the support ring 4 slats 12, which are circumferentially distributed and are each connected to a lower end portion via a respective bracket 13 with the converter vessel 3 and an upper end portion via an array 2 with the support ring 4.

On an outer side 34 of the converter vessel 3, a guide body 35 is arranged, which extends over a part of the circumference of the converter vessel 3. At the top 5 of the support ring 4, a cooperating with the guide body 35 guide unit 36 is arranged, which has two circumferentially spaced apart guide walls 37, between which a portion of the guide body 35 is arranged.

Radially inside is on the support ring 4 in the region of the guide unit 36 in an FIG. 3 formed recess whose radial dimensioning is chosen such that the guide body 35 pass through the recess in an axial relative movement between the converter vessel 3 and the support ring 4 can, with the support ring 4 held and the converter vessel 3 is moved according to the arrow 44.

FIG. 3 shows a schematic representation of the in FIG. 2 shown converter 1 from above. It can be seen in particular that a recess 39 is formed radially inwardly on the support ring 4 in the region of the guide unit 36, the radial dimensioning of which is selected such that the guide body 35 engages the recess 39 during an axial relative movement between the converter vessel 3 and the support ring 4 can happen. In addition, arranged on the support ring 4 trunnions 40 are shown for tiltable storage of the converter 1. The guide body 35 includes end guide slopes 45 which cooperate with the guide walls 37.

FIG. 4 shows a schematic side view of another embodiment of a converter 1 according to the invention with a converter vessel 3, a converter vessel 3 supporting, tiltably mounted, the converter vessel 3 radially outwardly surrounding with a game surrounding support ring 4 and a plurality of extending below the support ring 4 slats 12, the circumferentially distributed arranged and each connected to a lower end portion via a respective console 13 with the converter vessel 3 and an upper end portion via an array 2 with the support ring 4. The converter 1 is designed as a changeover converter.

On the outer side 34 of the converter vessel 3, an outer console 41 is arranged, which carries an axially extending in the direction of the support ring 4 load bolt 42, wherein on the support ring 4, a continuous radial slot 43 is formed, in which the load pin 42 engages.

LIST OF REFERENCE NUMBERS

1

converter

2

arrangement

3

converter vessel

4

support ring

5

Top of 4

6

Upper strap of 4

7

Bottom of 4

8th

Bottom strap of 4

9

Sidewall of 4

10

Sidewall of 4

11

reinforcing element

12

lamella

13

console

14

ring-side connection unit

15

lamella-side connection unit

16

connecting body

17

connecting body

18

connection Low

19

receiving opening

20

Page of 16

21

Page of 17

22

clamping bodies

23

Base page of 22

24

clamping element

25

Double arrow (setting direction)

26

Through hole of 17

27

actuator

28

Clamping side of 24

29

Page of 22

30

Verkeileinheit

31

first wedge body

32

second wedge body

33

Advantage of 22

34

Outside of 3

35

guide body

36

Guide unit

37

Guide wall of 36

38

Arrow (direction of movement)

39

Recess of 4

40

supporting journal

41

outside console

42

Last pins

43

Oblong hole of 4

44

Arrow (direction of movement)

45

guide slope

Claims (6)

1. Arrangement (2) for connecting at least one slat (12), which is connected with a converter vessel (3) of a converter (1), with a tiltably mounted support ring (4), which carries the converter vessel (3) and which surrounds the converter vessel (3) in encircling manner radially outwardly with play, of the converter (1), comprising

   - at least one ring-side connecting unit (14) securable to a lower side (7) of the support ring (14) and

   - at least one slat-side connecting unit (15) securable to a free end section of the slat (12),

   characterised in that

   - the ring-side connecting unit (14) comprises at least two connecting bodies (16, 17), which are arranged at a radial spacing from one another and between which at least one connection receptacle (18) is arranged, which has a receiving opening (19) at a lower side remote from the support ring (4) and a cross-sectional area which is of prismatic form with respect to a radial section plane, wherein mutually facing sides of the connecting bodies (16, 17) are each arranged at such an inclination that the spacing of the two connecting bodies (16, 17) from one another continuously reduces in the direction of the receiving opening (19),

   - the slat-side connecting unit (15) comprises at least one clamping body (22), which is introducible by way of the receiving opening (19) into the connection receptacle (18) and which with respect to a radial section plane has a prismatically formed cross-sectional area continuously tapering in the direction of the slat (12), wherein a base side (23), which faces the support ring (4), of the clamping body (22) is formed to be shorter than a radial width of the receiving opening (19), and

   - at least one clamping element (24) is arranged at at least one connecting body (16, 17) to be radially adjustable and can load the clamping body (22) with a clamping force in the direction of the respective other connecting body (16, 17).
2. Arrangement (2) according to claim 1, characterised in that a clamping side (28), which faces the clamping body (22), of the clamping element (24) and a side (29), which co-operates with the clamping side (29), of the clamping body (22) are arranged at an inclination in correspondence with the side (20, 21), which faces the respective other connecting body (16, 17), of the connecting body (16, 17) at which the clamping element (24) is arranged to be radially adjustable.
3. Arrangement (2) according to claim 1 or 2, characterised in that arranged between the lower side (7) of the support ring (4) and the clamping body (22) inserted into the connection receptacle (18) is at least one wedging unit (30) which comprises at least one first wedge body (31) securable to the lower side (7) of the support ring (4) and at least one second wedge body (32) which co-operates therewith and is secured to the base side (23) of the clamping body (22) facing the support ring (4), wherein the two wedge bodies (31, 32) are so constructed that the clamping body (22) in the case of progressing radial adjustment of the clamping element (24) against the clamping body (22) is urged away from the support ring (4).
4. Converter (1) with a converter vessel (3), a tiltably mounted support ring (4) carrying the converter vessel (3) and surrounding the converter vessel (3) radially outwardly to encircle with play, and several slats (12) which extend below the support ring (4) and are arranged in circumferential distribution and which are each connected by a lower end section with the converter vessel 3 and by an upper end section with the support ring (4), characterised by at least one arrangement (2) according to any one of claims 1 to 3, by way of which the at least one slat (12) is connected with the support ring (4).
5. Converter (1) according to claim 4, characterised in that at least one guide body (35) is arranged at an outer side (34) of the converter vessel (3) and at least one guide unit (36) co-operating with the guide body (35) is arranged at an upper side (5) of the support ring (4), wherein a recess (39) is formed radially inwardly at the support ring (4) in the region of the guide unit (36) and has radial dimensioning which is so selected that the guide body (35) can pass the recess (39) in the case of an axial relative movement between the converter vessel (3) and the support ring (4).
6. Converter (1) according to claim 4, characterised in that at least one outer bracket (41), which carries a load bolt (42) extending axially in the direction of the support ring (4), is arranged at the outer side (34) of the converter vessel (3), wherein a radial slot (43) in which the load bolt (42) engages is formed at least at the lower side (7) of the support ring (4).

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