DE1458947A1 - Device for blowing in oxygen for steel converters - Google Patents

Description

Dlpl.rh ^ »EBASTIAN ^ ERRMAt

Device? 5ijp ν

The present IrfindwÄ | ^ meets a device blowing iron Sa ^ erstpff tiip ^ tAhlkonverter and special a bio-heating iitoi operation of a lance, duroÄ iie Saser & iaff $$ a «£ Koarerter is filled. · _V

CD O (O OO

The SohlÄtifiihf for the lija ^ a | tf Ton ItiHlwasser an oxygen lance ujid ftt | p '' $% & BufuiMT voa Sauere ^ ef ί attached to the Lanafö sin4 lance duroh the 9 # «i | Unions of the and the suspension

H58947

The lance that is attached to it, the lance in move a tense or inclined position to the vertical, which the vertical movement of the Lenze in lund from an injection position opposite the Hindered converter and can also lead to inaccurate operation of the converter, causing an irregular Wear of the lining of the converter is caused. It also represents the length of the chain line that is required is to allow vertical movement of the lance and prevent excessive bending of the hoses, poses a difficult problem with looping and tubing maintenance.

The object on which the invention is based exists hence in the creation of a device for actuating an oxygen lance, in which the connected to the lance Oxygen and water pressure do not exert any lateral force on the upper end of the oxygen lance, which could cause the lance to move out of its vertical position.

According to the invention, an oxygen device for a steel converter in which a lance is connected to an elevator device, the purpose of which is can be actuated to close the lance in its axial direction in and out of an injection position relative to the converter

· ■ (ORIGINAL INSPECTED

8Ö980S / O52JQ

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sleds vertical

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is operatively connected to the pulley assembly for vertical movement thereof.

According to a further feature of the present invention, the dual arrangement of lances and their associated Control devices, the immediate replacement of a lance in the event of failure, in order to allow that the converter operation is continued with the least possible loss of time. If a lance fails it is only necessary to withdraw the failed lance and exchange it with the replacement lance that was previously at rest.

A preferred embodiment is shown in the accompanying drawings.

illustrated example of the present invention.

In the drawings are:

Fig. I and 2 are an elevation and plan view in which in something schematically the general arrangement of the device according to the present invention is shown in relation to a converter,

FIG. 3 is an enlarged view of part of the FIG

Fig. 1 shown device, in which the special design of the lance actuation device according to the invention is shown in more detail,

Figures 4 and 5 are side elevational views in opposite directions

- 5 - ■

Directions along lines 4-4 and 5-5 in PIg. 3,

Figure 6 is a top plan view taken in the direction of line 6-6 in Pig. 4,

Fig. 7 is a sectional view taken substantially along the line 7-7 in Pig. 3,

Figure 8 is a side elevational view of the elevator assembly to operate the cables attached to the oxygen lance and the guide washers for the hoses attached to it, and

FIG. 9 is an enlarged view in the direction of FIG

a part of the device in which the various positions of the guide washers and the hoses carried by them are shown schematically are shown when the oxygen lance to which the hoses are connected extends in a vertical direction in and out of an injection position moves, and when the carriage frame on which the hose discs are mounted, moves moved between its rest position and its operating position.

The drawings illustrate the manner in which the lance actuator according to the present Invention used in a device for dividing Og steel that is made of a brick lined with fire-resistant material

909805/0529

(Reffte or converter 1 consists, which is mounted on pivot 2 for a tilting movement in and out of an upright blow position , in which the opening 3 of the converter is open upwards and is located under the lower end k of a hood 5, which is the release of smoke from the converter i is the hood 5 extending upwardly in a relation to the vertical inclined angle to a vertical exhaust stack. 6; in the wall of the hood 5 is formed an upwardly facing opening 7, which approaches the centrally above Converter 1 is located and through which an oxygen lance 8 can be lowered into a blow-in position. The lance actuating device according to the present invention generally consists of a movable frame F, which carries both the oxygen lance 8 and an arrangement 9 of guide discs, which the hoses for the Supply of oxygen to the lance 8 and for circulating cooling water to carry through the lance 8. To be described below In this way, both the lance 8 and the disk arrangement 9 are vertically movably attached to the frame F, which is provided in the form of a slide, so that it can be moved into and out of an operating position in which the vertical movement path of the Lance 8 is located exactly above the center of the opening 7 in the smoke extractor hood 5.

BATH ORIGINAL 909805 / O529

Viβ shown in Figs. 3 to 7, the frame P has a flat rectangular shape and is supported by side frames IO formed, which are assembled parallel to each other at lateral intervals. The frame F is mounted in a vertical position so that its opposite Ends Ii and 12 form the top and bottom, respectively, of the frame and its opposite edges 13 and 14 are perpendicular. Laterally spaced Carrier 15 on one side of each frame 10 form a rail on which a carriage 16 for the lance 8 for guided axial movement in a vertical movement path "along the edge of the frame. The device for guiding the vertical movement of the slide 16 about the rail support 15 is shown schematically and consists of rollers 17 "which roll along the webs 18 of the carrier 15, and barks 19" which roll in a rolling manner Stand on the flange surfaces 20 of the carrier. the Lance 8 is suspended from the carriage 16 in a position in which they are in the axial direction along their vertical trajectory. The suspension is provided by two vertically spaced apart * SaI-terungsglißder 21, which form part of the carriage 16 and each have a semicircular recess which sits on the side of the lance 8. The lower bracket · - »' member 21 is in engagement with a flange 22 fixed to the lance 3, and the upper support member 21 is

BATH

ι · _ ₈ "

la engagement ait "inen collar 23 flee to the lower end head 2% of the lance, the lance 8 is 25t by Klemmfcftile ^eie are luebar attached to the carriage 16 and having ialbkräsfurmige recesses which sit at the dance β, in tight engagement with the Holding members a egg held. When the clamping parts 25 are attached, as shown in the drawings, they are also in retaining engagement with the lower end of the collar 23 of the lance head or bit the flange SS, so that they are part of the suspension for the lance 8 serve the carriage 16. When a lance has to be replaced, the clamping parts 25 are removed or swiveled out of the side of the slide 16 to the right in FIG. 3, so that the lance 8 can be removed from the slide 16. The vertical movement of the lance base 16 and thereby the axial movement of the lance 8 into or out of an injection position with respect to the converter 1 is controlled in the manner described below by two cables 26 and 27, which are at 28 and 29, respectively, at the upper end of the carriage 16 are connected.

The sole frame F is in a horizontal position

j between finer rest position and the one shown in the drawings. set operating position movable, in which the lance 8

j is located above the opening 7 so that its vertical ι Movement path runs axially through this opening and the

BATH ORIGINAL

The lance can be lowered or lifted through the opening into and out of an injection position with respect to the converter 1. For this purpose, the upper end 11 of the frame F is suspended from a trolley 30 which is equipped with bolts 31 which guide their movement via guide beams 32. Guide rollers 33 at the lower end of the frame 12 roll along guide supports Jk, which run parallel to the guide supports 32. In this way, the rollers 31 and 33 cause the movement of the frame F to be guided in a straight line. Movement path that runs in the middle between and parallel to the side frame parts 10. The movement of the frame F over this movement path is brought about by rack and pinion drives which are arranged at perpendicular distances from one another and each have a stationary rack 35 and a pinion 36 engaging therein. The pinions 36 are mounted on a common "drive shaft 37 which is rotatably mounted in the frame F. The shaft 37 runs along the edge 13 of the frame F and is driven by a reversible electric motor 38 via a reduction gear 39. The excitation of the motor 38 takes place under the control of suitable reversing and limit switches that the movement of the frame F between its operating position, in which the lance 8 is in the middle above the converter 1, as shown in the drawings, and one

• $ 8098057052

1458 * 47

compared to the position shown in Fig. 1 to the left control retracted position in a manner to be described below.

As already indicated, the disk arrangement 9 forms a support device for the water circulation and oxygen supply hoses while the lance is moved in and out of a loading position. To this end, assigns the arrangement 9 has a central disk 40 for a hose 41 through which oxygen is supplied to the lance 8, and a pair of washers 42 on opposite sides the disk 40 for the water inlet and outlet tubes 43j through which the cooling water circulates through the lance 8. The discs 40 and 42 are rotatably mounted independently of one another on a shaft 44 which is transverse to the frame 10 runs as best shown in FIG. To move the arrangement 9 vertically, the opposite Ends of shaft 44 carried by carriage 45 running in a perpendicular direction along the length the side frame 10 are guided movable. The device for guiding the vertical movement of the slide 45 is shown schematically and consists of rollers 46, which roll along guide rails 47 along the length of each frame side 10. Each of the tubes 41 and 43 has opposite end portions 48 and 49 on, from opposite sides of the discs

909805/0529

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r lance 8 arranged ^

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which this Sohöiohe gttttsea, Kl « der Solteibe% 0 * Köanen thereby Lance head 24 In DreleokeferM BATH

H589-47

The cables 26 and 27, controlled by the vertical movement of the lance carriage, as indicated above, are actuated by the cable winding device shown in FIG. This elevator device consists of an elevator drum 56 for the cable 27 and an elevator drum 58 for actuating the disk arrangement 9 in a manner to be described further below. The drums 56 and 58 are mounted on a common shaft 59 which is driven by an electric motor 60 via a reduction gear 61. The cable 27 is anchored at 62 on the drum 56 and runs upwards over guide disks 63 on the top 11 of the frame F to its connection 29 on the lance carriage 16 so that the rotation of the drum 56 in opposite directions raises and lowers the lance carriage 16 causes. A cable 6k wound around the drum 56 in the opposite direction from the cable 27 and anchored to the drum 56 at 65 counterbalances the operation of the elevator drum 56 above via guide disks 66 (see FIG. 1) and from there down to a counterweight 67 which can be moved in a vertical direction and which is suspended from the lower end of the cable 6k.

The cable 26 forms a safety counterweight for the lance 8 by which the lance is prevented from

the . _i, ..-., _A

U58947

according to their gravity falls into converter 1, if the operating cable 27 breaks. For this purpose, the cable 26 runs from its connection 28 on the lance carriage 16 upwards and over guide washers 68 on the top of the frame F and from there downwards and around before the guide disk 69 »which is concentric on the drive shaft 59 of the elevator is attached. From the disc 69, the cable 20 runs upwards and over (not shown) Guide disks, which are mounted concentrically with respect to the disks 66, and from there down to the connection to the counterweight 67 in the same manner that the counterweight cable 64 attaches the elevator drum to it is.

The vertical movement of the disk assembly 9 is controlled by a cable 70 that goes around the small elevator drum 58 is wound and is anchored to this at 7i. The other end of the cable 70 is at 72 on one Part 73 connected, which connects the soles 45 and forms part of the vertically movable carriage suspension of the disk arrangement 9. From the terminal 72 runs cable 70 up over a pair of spaced apart guide washers 74 on the top Ii of frame F and from there down to the Winding drum 58. InMge of the way in which the Hoses over the support disks 40 and 42 and the fixed Connection piece 51 of their end parts 49 out

90Ö80S / 082S. ', ■■'

are, the disks 40 and 42 must move at half the linear speed of the axial movement of the Lance 8 can be raised and lowered so that. the axial movement of the hose end parts at 48 and the axial Movement of the lance 8 have the same speed. This requirement in terms of speed the vertical movement of the disk assembly 9 in relation to the speed of the vertical movement of the carriage 16 and the lance 8 suspended on this is fulfilled in that for the cable 70 a Elevator drum is used which is half the diameter the drum 56 for the cable 27 of the lance carriage. Because the drums 56 and 58 are mounted on a common shaft forms the bias of the counterweight 67 based on gravity, which acts on the drum 56 is also applied to counterbalance the operation of the elevator drum 58 and cable 70 for the pulley assembly 9.

A belaying counterweight that acts to the effect that Disc assembly 9 in the event of a rupture of the control cable To secure 70 against unlimited downward movement is formed by a safety counterweight cable 75. The security cable 75 is at 76 at the top 11 of the frame P is firmly anchored and runs from there downwards over a disc 77, which is connected to the slide part 73

909805/0 5 29

the disk assembly is connected vertically movable. The cable 75 runs over from the disk 77 upwards Guide disks 78 on the upper side ii of the frame P and from there downwards via a guide disk 79, which is mounted on the drive shaft 59 of the elevator device in is attached in the same way as the disc 69 for the cable 26. From the guide disc 79, the Cable 70 upwards via guide disks (not shown), which are arranged concentrically behind the disks 66 are, and from there down to a connection on the counterweight 67. Since the safety cable 75 over the disk 77 is pulled, allows the vertical movement of the disk assembly 9 at half speed the vertical movement of the counterweight 67 and the lance 8.

It is noted that the opposite to the elevator drums 56 and 58 concentric arrangement of disks 69 and 79 on shaft 59 is required to have the same degree of tension in the elevator and Maintain safety cables during the movement of the frame F through its rack and pinion drive. As a result of this Arrangement, each of the cables 26, 27, 70 and 75 has the same Length between the guide discs at the upper end ii of the frame and the shaft 59 of the elevator unit, and the movement of the frame F in and out of the in the

U58947

The operating position shown in the drawings has the same effect on the length of all these cables. if the frame P is moved to the left in the view of FIG. i, the distance between its corner at the top of its side I3 and the shaft 59, and the movement of the frame F in one opposite direction increases this distance, but since each cable 26,. 27, 70 and 75 around the Shaft 59 extends as the center to the counterweight 67, a change in this distance affects each of the Cables in the same way so that they are all held taut in the same way.

■ U58947

As shown schematically in Fig. 2 of the drawings, the device preferably has a double lance arrangement and actuation means for these in order to allow an immediate replacement of a lance if a lance fails during the operation of the converter 1. In this illustration, the two frames of the double lance actuation device are shown separately and denoted by the letters F 1 and F 2. Each of the frames F 1 and F 2 forms a holding device for a vertically movable lance 8 and has the same operating parts including a vertically movable lance carriage 16 and a vertically movable disc assembly 9, as shown above in connection with that shown in FIGS. 1-8 Frame F is described. The actuating device of each frame F 1 and F 2 also has a fixed rack 35 and a pinion 36 for effecting their horizontal movement along the movement paths 81 and 82, which are respectively in the middle between and parallel to the sides 10 of the frames F 1 and F 2 run. The attachment of the frames F and F 2 is arranged so that their horizontal trajectories 81 and 82 intersect at a point 83, which is sioh vertically above the center of the hood opening 7, duroh the lances 8 in and out of their injection position in the Relation to the converter 1 are moved. The point 83 thus lies on a vertical line which forms an extension of the axis of the lance 8, which is to be lowered in its blow-in position and thus determines the operating positions of the frames F 1 and F 2. In Fig. 2 is

909005/0529

the frame F 1 shown in its operating position, with its lance axis at the point 83 and thus located in the middle above the hood opening 7, and the frame F 2 is in its retracted or inoperative Position shown. Both frames F 1 and F 2 can be moved into their retracted positions, which the Corresponding position of the frame F 2 in Fig. 2, but only one frame can be moved into its operating position which corresponds to the position of the frame F 1 in FIG.

When frames F 1 and F 2 are in their inoperative or retracted positions, take their Disk assemblies 9 a position, as shown in Fig. In dashed lines, with the ends 49 of their hoses curved downwards to the stationary ones Connecting pieces 51 run. To allow that a lance 8 in its injection position opposite a Converter 1 is lowered, the frame F, by which the lance is carried, must first be moved horizontally into an operating position in which its disk arrangement 9 is in a position as shown in solid line in Fig. 9, and it can be seen that in this position the hose end parts 48 and 49 run tangentially to the disks 40 and 42 and perpendicularly downward from them, the hose end parts form an axial extension of the lance 8 along its vertical path of movement. In this position of the frame F and the disk arrangement 9 carried by it

909805/0529

the elevator cables are operated * via the elevator assembly 9 and the lance θ in the in Fig * 9 in dashed lines lower positions shown, and during this movement the lance head 24 sets the double ¥ eg of the sole plate assembly 9 back * In Fig * 1 is the lowered one Position of the lance sole center 16 old of the length carried by it in binblast position in dashed lines shown. DIt movement of a lance 8 upwards into theirs upper retracted position and frame P, an dew, it is attached igt, in its retracted position corresponding to the position of the frame F 2 in Fig. 2 is through causes a reversal of the processes described above.

Attention is particularly drawn to the fact that the weight of the hoses 41 and 43 during the vertical movement of a lance into and out of an injection position opposite the converter 1 and during the horizontal movement of the frame F to which the lance is attached is between it is carried retracted and its operating position by the discs 40 and 42 'result ¹ of the support of the tubes, which is caused by the discs' on which they are mounted, is ersiohtlich that the hoses do not seitllohe force to the upper end 24 of the lance 8 exercise which would be directed to move the lance from its perpendicular position. It should also be noted that this is accomplished by attaching each tube to one of the disks 40 and 42 in the form of an inverted loop

is suspended, its end 48 connected to the lance being held in a vertical position which runs along the vertical watering path of the lance 8. This arrangement and the ability to move vertically the disk assembly 9 together with the vertical movement of the lance 8 cause the ends 48 of the hoses 41 and 43 are fed in the axial direction along the vertical path of movement of the lance 8 when this in is moved in the axial direction in and out of its blow-in position.

From the foregoing description it can be seen that the lance actuator of the present invention provides a straight line connection for the flexible oxygen and water soles on the lance. * The connection of the laterally required hose connections thus allows a simplified lance design and it is possible in comparison to previous arrangements in which the flexible hoses in one Chain line are suspended to allow the vertical movement of the lance, further from the description above that the lance actuator according to the invention, the use of shorter hose lengths for the oxygen and water supply hoses is allowed. The axially running straight connection of the The flexible soleplate with the upper end of the lance also prevents the lance from being unbalanced and therefore a complicated guide device must be provided which, when such a ge-g ^ p ORIGINAL

S η9805 / Π529

■ ■■■■ :!

There is a need for equilibrium. Consequently have the Lansenführung and suspension geaäß the ror-1legende invention a simplified training and form a safety factor in that it reduces the possibility that the lance will during the Lowering falls into the oven, and is prevented from the lance eaporgeriohtet in one measure, among other things, an angle is called the movement of length through the opening during lowering «could be obstructed. In addition, and as a result of the arrangement of all parts of the lance actuating device directly above the smoke extraction hood 5 It can be seen that the sole and the actuating device are protected from fire and belly damage are protected, which from the converter 1, for example during its tilting movement in and out of its in Fig.l shown blow-in position.

BATH.

Claims (1)

Patent application: device for blowing τοη oxygen for steel converters. Claims 1. Oxygen injection device for a converter for steel production, ie a lance is connected to an elevator device which can be actuated to move the lance in an axial direction in and out of an injection position relative to the converter, and flexible supply hoses provide the lance with an oxygen source and a coolant source connect, characterized in that the flexible supply hoses through a Führungssoheibeneinriohtung (9) extend which is arranged so as to guide the parts of the Zufuhrsohläuche between the disc assembly and the lance (θ) as it is moved in a direction that is an axial Forms an extension of the lance, and that an actuating device BATH ORIGINAL Patent attorneys Dipl.-Ing. Martin Licht, Dipl.-Wirtsch.-Ing. Axel Hansmann, Dipl.-Phys. Sebastian Herrmann 8 MONCHEN 2, THEKESIENSTRASSE 33 · Telephone. 272102 Telegram address: lipatli / Munich Oppenau office: PATENTANWALT DS. RENHOLD SCHMIDT let seen the movement of the feeder · ohlouche about the Soheibenanordaung with the speed of the lens movement caused 2. Apparatus according to claim 1, characterized in that dadaroh the feed coils form loops, the length of which see increased or decreased during the movement of the lance. 3. Apparatus according to spoke 2, daduroh characterized in that the parts of the feed pipe between the disk assembly on the lance and parts of the feed pipe connected by run of the Solheibeneinrlohtung to the supply sources, form loops, and that the actuating device to do so serves to move the Soheibeneinrlohtung. k. Apparatus according to claim 3, characterized in that the disc assembly is rotatably mounted on a "carriage carried by a" frame on which the sole disc assembly is vertically movably mounted, the vertical movement of the disc assembly being related to the vertical movement of the lance is aligned and that the actuator is in operative connection «1t of the disk assembly for its vertical movement. 5. Apparatus according to claim 4, characterized in AaB the parts of the supply * ehläaofce, the ven the Soheifeeaanort * into the supply sources, look downwards and extend with their ends to fixed lines. BATH 90980S / 0529 SLH ansohlUssen are attached, and that the actuating device is designed so that it a movement of the Slide at half the speed of the lance movement caused by the elevator device works. 6. Apparatus according to Anepruoh 5 »characterized in that the elevator device has a drum and one on the Drum and the lance attached elevator cable comprises that the device for generating the vertical movement of the soleplate has a second drum with half the diameter of the first drum, that an elevator cable is attached to the second drum and the soleplate and that both drums are mounted on a common drive shaft. 7 «device according to Anepruoh 6, characterized in that that the supply hoses for the coolant one of the the diameter of the supply hose · for oxygen have different diameters, <taß the socket arrangement has several separate disks for a supply hose each and that the disks on a common shaft are attached and different diameters depending on the Have the difference in Durohmesser of the feed soles. 8. Apparatus according to claim 6, characterized in that a common counterweight is provided so that the counterweight does not move vertically forms and from a movable in vertical sighting BATH ORIQINAL Oegengewleht, ei ··· «it dea a« gwag «viekt v« r «* ad * a« a cable and »iner Teraa *» ning »T« rkia4 * ng 41 ···· Ι ** · 1 · «» · 1 * · γ the Troaaela »· βί · Μ,» af t »r 4 ·· Uli ·! la «ntgegeagaevtsta • ichtaag ■ «d« a With 4 «r for · *» ·! · Ν * (· ν1 · * · 1 * · * A »fa * f akM>« l wound up l «t 9. e «rMt KMiH Am *} ** · * S, *« # ** · * gtkeauiaeluivt, 4m » • in« 3ioli »rlfit« fc> b «l't« g »f wlslif aiaritfctWf v * rf« Mfc · »is, *! · Mn * sv« i SUtorlttlUkftfc ·} », 41 · Bit« · »·· $ ·» «· * wioht«! 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Device n «ok Aaipniofc 10, 4ad« rek f «keaaa« leka * t, 4a · a ratal In Bi oh tong on 41 · B «t rl« teat «Hoof r« rl * «f« nd · and the RaauB la · * 1β · γ wa * gr «oht« a B «v« fUBg flikr «a4 · Iaka- »Tango and · 1η · iw« it · la «ia« r other ra41al «a Bloktnag running «and a wide laaii ·» carrying one intended elnd, the «la ·« wide Jüwrdaaa «one hmrnn · * '* "■■' * ■■■ BAD ORIGINAL E.g. & Φ1ΙΜρΜΜΜ | Ι wPBjJ * i SRI β * β la lter · irtriäfctttolSmg m move »,« ** «1 ti · λ » mar · * »· Um · i * BATH ORIGINAL