DE1758590A1 - Device for loading the blow openings of a steel converter floor - Google Patents

Description

The invention "relates to a device for the blow openings Beaufschla supply of a steel converter bottom with Blaswind, the particularly advantageous can be put to use when the blowing pressure is higher than 3 bar

lies.

The usual device for feeding the steel converter floors with blowing wind consists of a wind box, one simple cylindrical chamber of small height, the diameter of which is slightly larger than the diameter the outermost row of nozzles or orifices. The side wall has one or more large openings

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on ι over which the blowing wind is bridled, the wind box is up through the base or carrier plate limited, which carries the converter base provided with blow openings, and is closed at the bottom by a closure cover. The dismantling of the Deekele allows access to the blow holes to conduct their behavior to be determined in the company and, if necessary, to release them or voluntarily close them if there is a Abnormally rapid wear compared with that of the neighboring openings shows · The dismantling of the cover This allows a worn floor to be replaced with a new one at the end of its service life.

Such a feed device is sufficient in practice in the Bessemer and Thomas steel works, where the blue pressure of the wind does not exceed 3 bar.

But if you work with new technical processes »for example with the blowing of pure oxygen or Air heavily enriched with oxygen through openings Small diameter, it is desired, the wind at pressures considerably higher than the usual pressure at ■ To blow Bessemer and Thomae Stjfahlwerke, in which the maximum is 3 bar. The usual one is enough here

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'Find box no longer. Rather, this one knows the the following 'laughs' on:

a.) The closing lid of the wind box, which in practice is no longer 3cnr tight in the range of 1.5 to 3 bar, is no longer sufficient at all at pressures o-cri.all; 3 jar off. In other words, multiplying the tension points by "opening and closing" them, opening or closing, then becomes a long and arduous work. Apart from that, a plastic seal that extends over the circumference must be introduced between the window box and cover and the seal is via such a seal The circle, round diameter, is only correct if there is no deformation of the box and the lid, which is usually only for a short period of time after a new box of the pail is put into operation.

b.) The use of Ilas pressures above 5 rar, which can even exceed 12 bar, multiplies the Danger of the wind between the base plate and the base the iron or the blowpipes penetrate and with it the dangers of suddenly being made of refractory product existing establishment of the soil under the action of the

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OfWGINAt

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Pressure is thrown up.

c.) In a wind box with a diameter greater than 2 m, the resultant is that on the plate of the floor or the forces acting on the closing cover are considerable. at a pressure of 12 bar this resultant is greater than alc 375 tons. On the one hand, this results in a deformation of the base plate and the cover during the vacuum setting and on the other hand the occurrence of fatigue stresses between the compression and decompression phases.

The aim of the invention is to provide a feed device for to create the blow holes that do not have the disadvantages has a known wind box and which can be used at pressures greater than 3 bar.

To this end, a device according to the invention intended for feeding the blow openings of a steel converter bottom, consisting of a plurality of collector tubes which are in the form of concentrically arranged gates or other convenient form, wherein zeäer this collector with Blaewind a certain number of openings of the Eodens, for example a Row, dine.

According to the invention, the following features can be used individually or

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BATH ORIGINAL

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in "any combination for a particularly favorable one result according to the invention:

The arrangement of the food collectors is mechanical detachable overall arrangement.

The arrangement of the food collectors is welded to the base support plate, μ The arrangement of the food collectors is itself fed with a blown air via a single or two or more inlets.

The supply of the collectors is made possible or facilitated by connecting channels, their number, their profile are chosen so that an equal distribution of the amount of wind is brought about on each of the blower nozzles. The food collectors and the connecting channels are made of steel.

Food collectors and connecting channels are made of copper. * The arrangement of the feed collectors is inserted into a housing which is a conventional one with a Closing lid provided wind box can act. The housing is intended to accommodate the arrangement of the collector and to protect the connecting pieces of the collector with blow openings against impacts or sparks or the like. The food collectors are with the blow openings that they feed via flexible pipes, connected.

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ORIGINAL INSPECTED

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The food collector unites with the blow openings via pipes Small diameter, for example copper pipes, which consist of one or more spirals, which are intended to give them a certain elasticity that is useful for assembly or disassembly. The said flexible pipes or the small diameter pipes mentioned above are at least one of its ends on the blow opening side or at both ends with connecting pieces with self-locking, which automatically close tightly as soon as they are switched off.

The blow openings are provided with copper pipes of small diameter, switching on and off takes place by simply actuating the connecting piece on the collar of a flexible pipe or the corresponding pipe small diameter.

The arrangement formed by each of the named connecting pieces is built up by the lower end of the copper pipe lining each blow hole and by the base plate in such a way that if a wind burst accidentally occurs due to the pressure between the connecting piece and the lower end of the copper pipe, it is discharged into the open environment and thus not between the pipe and the floor support plate

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penetrates.

uin ·. the food collector with the blower openings over the Flexible tubes or small-diameter tubes, so these collectors are each adjacent between each other 'iaaöfinungreihen arranged in such a way that a Only access these openings to monitor them una '.,' artung in: Operation is maintained as it is to their .Λ.J3ο ^ aItVJi: compared with abnormally heavy wear uit the neighboring Cfinungen.

The collector welded to the Jasiaplattc is pressed directly into a row of blow openings and int where .ie Achce aes ln _t iektor3 and that of the "« ersc ".: lu3ses π: ίΐ • .or Ach.:e ier according toöii lilaeöii'riunc susamnenial-

With this type of device 4 & every metaxlisc.ie ends, For example, Aohr consisting of copper, the one .blow opening of the diode forms, at its base in a funnel or inlet, which is optionally soldered to the plate carrying the converter base, and that the injector ends up in a hemispherical head which is tight against the inner wall of the funnel or inlet

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WHEEL ORIGINAL

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is angeprßt by being pressed against the plate dee soil.

In the device with a closure or with the above-mentioned inlet, the hollow injector can have a cylindrical blow opening in the axis of its upper end, which ends upward in an expansion, such that successive edges or edges of the upper end of the injector are not unfavorable Influence the diameter of the cylindrical part on which the gas flow rate depends.

In devices of the type mentioned above, the inner chamber of the injector which feeds the cylindrical opening is connected to the pressure wind contained in the collector by means of a certain number of channels, the total cross-section of which is calculated in such a way that the gas quantity is not limited.

In such a device the verschlug can of $ ä ^ jektors cue pass a massive or full part which is arranged in the interior of the ejector and ne.cn ocen terminates in a ball, the £ e> -en cylindrical tffnung of the injector can be squeezed, soon the pe-

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named nozzle is out of order.

The movement of the shutter in the aforementioned device is obtained by inserting the shutter into the injector screwed in; but it can also be obtained by any other suitable means.

In such a device, the base of the metallic tube, which forms each nozzle and has the shape of an inlet or funnel, on the outer surface of a connection with a discharge channel worked into the plate of the converter body, such that when wind escapes at the At the base of the funnel, the pressurized loss is discharged to the outside and not passed between the plate and the bottom , which would be dangerous.

As the above preferred features of the invention show, one of the main advantages of the invention is that the pressure wind is held and guided by means of optionally toroidal collector feed pipes and does not enter a chamber of relatively large volume, for example a wind box, as a whole, the subdivision of the flow into as many currents as there are blow openings at the exit of the feed

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collector pipes takes place.

From this it follows that the pressure wind is everywhere in the pipes which constitute the excellent type of container intended for pressurized gases.

Another advantage of the invention can be seen in that switching on and off each blower opening is easy and quick at the same time: Either the switch-on takes place due to a special connection piece of a known type with immediate insertion of the copper pipe at the base, which surrounds the inside of the blower opening, or the switch-off of the connection piece opposite the base of the tube of the nozzle automatically ensures the hermetic closure of the end of the flexible Tube or small diameter tube attached to the spele ring at the other end. So hang on

W Switching on and off only from a simple ManOver el-

no closure in an injector.

Another advantage of the invention is to be seen in the fact that if there is a loss of wind due to the pressure at the base of the copper pipe lining the corresponding blow hole, the binding of this Pressure wind between the pipe and the base plate is not to be feared

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i3 ^l j, v / a3 al3 lüstice consequence a lifting of the ground ^ üttc. In fact, the lower end of the coupling tube is forcibly pressed onto a conical surface of the base plate, while the lumen in which the outlet is suspected is constantly in contact with the atmosphere.

::. Another advantage of the invention can be seen in that? the "uganr: to the blow holes remains free, even without Denor.ia / c der Sneisesanmler. Din advantage all ~ e-: .. e: ..: or Ai: ': vi.rc erii ..dun? sgc-: :-H.'". achieved by the fact that there are many pressures: \. * Inintrittees ic li-insip ni-jlT ¹ and that if they happen to be in one place? occur, one can keep this ocfort away.

better understanding of the 3rfinding vsrden r; \ / el embodiments opposite.

Ss is eich, in both cases uu the 3peis \ u:.: A converter, the 20 tons of melt friseivu, uit pure oxygen under a pressure of 13 to 14 bar οτνε. to dine. For this purpose, the floor is equipped with 162 blow openings, which are lined on the inside with copper pipes with an inner diameter of 3.5 mm.

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The 162 openings are distributed over their diameter lie:

1st row

2nd row

3rd row

4th row

six concentric circles and aperture number as follows

5th row

6th row

Diameter diameter diameter diameter diameter

400 mm 625 now 850 mm

1075

1300

1525

12 openings 18 openings 24 openings 30 openings 36 openings 42 openings.

Two embodiments of the invention will now be explained in more detail with reference to the accompanying drawings, in those

FIG. 1 shows a general representation of the arrangement of the food collectors made of copper 1st;

Figure 2 shows the connection or coupling of one of these collectors to one of the Blae openings, as well the first embodiment; the

Figures 3 to 5 show a second embodiment with six headers just below one of the six Rows of blow holes in the floor are arranged, the connection between the collector and the blow openings via an injector provided with a closure he follows.

FIG. 3 is a view of the overall arrangement of FIG six collectors, the fan feed and the connecting

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ORIGINAL INSPECTED

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β .

- 13 -

manure channels;

Figure 4 is a vertical section showing the connector or the coupling piece of the fan feed at the outermost collector with one of the connecting channels; and

Figure 5 is a vertical section showing an injector with its closure opposite a tube. λ

As can be seen from Figure 1, the blower wind, which in principle consists of pure oxygen, but also through other gases can be formed to induce a safety purging or a stirring or cooling movement, introduced through a feed 1 ending in a coupling or connecting piece 2. One of the two walls of the connecting piece 2 is connected to a first ring line of the device according to the invention. The main collector 3 takes on a double role: "On the one hand, it feeds the 42 air openings of the sixth Hey, on the other hand it transfers the gas flow to the other collectors 4, 5, 6, 7> 8 as well as to a central compensation box, with the interposition of the two radial ones Connection channels made of copper 10 and 11.

The inner diameter of the main collector 3 is 60 mm, the diameter of the torus is 1.70 m

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ORIGlNAt. INSPECTED

metao

Connecting channels 10 and 11 initially have an inner diameter of 50 οά »then 40 mm. Saunier 4 »5, 6, 7 and 8 each have an inner diameter of 35 mm and, as a torus diameter, each have: 1,400 m; 1.180 mj 0.970 m; O.74Omj 0.525 m.

The connection between a collector and a blow port can be seen in iigur 2.

A copper pipe 12 of 6 mm inside diameter, which has a complete spiral - in order to obtain a certain flexibility - connects the collector, for example the collector 3, with the pipe 13 of the vent opening in question, which has an inside diameter of 3.5 mm. Bas spiral pipe 12 is connected to the Cöllektor 3 via a clutch with self-closure 14 and is connected to the pipe 13 via a second connection own shutter 15 "Each of these connectors comprises a male member and a female member: I ¹ for the first clutch 14 is the receiving part of the collector 3 is welded on and the plug-in part forms the bands of the Sptalrohree 12, while the second coupling 15, the female end is welded to the end of the spiral tube 12 and the male end to the tube 13 of the vent opening; If the connection or coupling section is branched, the vind can circulate without any loss.

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ORIGINAL INSPECTED

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If one does not observe the condition of the blue opening 13, or if one wishes to finally exclude this from the circle, oo it is sufficient to use the second connecting piece ^ 15 branch off, and immediately it closes in the plug-in part valve located hermetically and thus prevents any loss of Saueretof! from the collector 3.

In the event of an escape of oxygen between the plug-in part 16 of the coupling 15 loaded the base of the pipe 13 this leakage flow is sucked off through a discharge channel 17, which is recessed between the part 1c and the plate 18 of the base of the floor. So the oxygen can't get in between Penetrate tube 13 and plate of the bottom.

In the exceptional case in which the spiral tube 12 due to Fatigue or is no longer operational due to unintentional melting or for any other reason, I is sufficient it, the first clutch H au disconnect so that the in the receiving part The existing valve hermetically closes the corresponding opening of the collector, which can then be used by the others continue to feed any blowholes that are still in operation.

The arrangement of the food collectors 3 to 8 can be in one with a cover provided housing be arranged, this housing for the protection of the collector and the spiral roller

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against shocks or glowing sparks or the like.

The copper pipes can of course also be replaced by rubber soles or any other device which at the same time has an elasticity as well as a sufficient one Have safety in operation, taking into account the wind pressure.

After the second, in Figures 3 to i> described embodiment, as said, six collectors are provided, each being located just below one of the six rows of blow holes in the floor.

In Figure 3, the six toroidal collectors 21 to corresponding to the six blow holes to be seen. The collector 21 is the collector according to the scope

These collectors are connected to one another via four connecting channels 27 to 30 with a cross-section decreasing towards the center, this cross-sectional profile being selected according to a law that * moderate distribution of the wind on the arrangement of the 162 Blow holes ensures.

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The pressurized blowing wind enters the device device via the feed 31 a.

Figure 4 is a section along line B-B showing a detail of the entry of the wind into the device.

The Windnuführunssleitung 31 is at the same time to the dolomite soil supporting plate 32 of the converter (not shown) and welded to the circumferential collector 31. The wind follows the path indicated by the arrow 33 and simultaneously enters the circumferential collector 21 and into the connection channel 27 a. With interposition of these two paths it is distributed in the one formed by the six collectors and the four connecting channels Disarray.

FIG. 5 is a section along the line G-C, along the axis of a blowpipe, through the associated injector and the closure.

The carrier plate 32 carries the floor 34 of the converter, which consists of dolomite tar; but the floor can also be made of made of any other refractory material. He

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ORIGINAL INSPECTED

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pierced by openings, for example 35, which allow the copper pipes, for example 36, to pass through, which form the metallic part of the tuyere. The base of the copper pipe is hollowed out and forms a kind of funnel or Inlet brazed onto the plate of the bottom 32 is. In addition, the hemispherical head 43 of the injector .42 presses the funnel or inlet 37 against the Base or carrier plate 32, such that the seal in the Prinaip is complete. If by accident a Part of the pressure wind bjfis would penetrate outside the pipe 36, this would be drawn off through the discharge channel 38 and could not migrate to the dolomite soil, by passing through tube 36 and plate 32.

The collector 21 is welded to the support plate 32 at 39,

ψ At the place where the discharge channel 38 is to be used, the latter is closed with some welding agent 40.

The chamber 41 of the collector 21 contains the blowing wind, the under pressure, for example 13 to H bar.

The Injektor'42 is a rotating body that is used in the Axis of the copper tube 36 is arranged, which the

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ORIGINAL INSPECTED

Wall of the collector 21 penetrated in a completely tight manner. The hemispherical head 43 of the injector 42 is pierced in its axis by an inverted truncated cone 44; The latter is connected with the Baals to a cylindrical pipe extension 45 , the diameter of which is at least equal to the inner diameter of the pipe 36.

The injector 42 has a cylindrical inner chamber 46, in which a shutter 47 with a ball 48 can move. The closure 47 is in the blowing position in its lower position. The Druckkaumer 41 of the collector is with the Innenkaomer 46 of the injector over several Ci'i'inations, for example 49 * in connection, which are in the Wall of the injector are incorporated. The pipe socket or the nozzle 45 and the pipe 36 are so with under Pressure fed by standing wind.

Over the life of a converter base it can happen that one nozzle wears abnormally quickly compared to the other, in which case it is advisable to put it out of operation. For this purpose, _t ~ ENU £ t eB, go to move the closure far vird pressed until the Lugol 4S against the Baeis of the tubular extension 45, whereby the connection between the injector and the dee 46 Kautner Lupierrolir 36

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In failure comes. The nozzle 36 is put out of operation, its wear and tear is stopped immediately. The movement of the closure can be obtained by screwing the closure 47 into the injector 42, but it can also be designed in other useful ways.

The seal between the injector 42 and the closure is established by the rubber sealing washers 50.

The injector 42 is in principle during the entire period of operation of the converter bottom not shifted. If the soil is destroyed, the injectors are withdrawn by one grasps her head 51.

The nozzle, the associated injector and the closure thus form an elongated arrangement of small, small diameter Platform requirements that are even with a system from DUben that close to each other are useful, which is often the case.

In the context of the invention, of course, the make various reductions and variants or /. replace the elements with equivalent means. The measure according to the invention can also be used for all

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ORIGINAL INSPECTED

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Find devices with a fastening for the pipes such as reactors, condensers, heat exchangers, injectors, etc.

Claims

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Claims (20)

1758 * 90 PATEITAH PACKAGES ■ ν? V l.c 1.) Device for applying the blow openings _;> a steel converter testicle, characterized by a plurality of collector tubes (4 - 7), which either have the form of concentrically arranged gates or any other suitable shape, each of these collectors having a certain number of openings of the floor, for example a row, acted upon with Blasv / ind. 2.) Device according to claim 1, characterized in that that the arrangement of the feed collectors mechanically form a detachable arrangement 3.) Device according to claim 1, characterized in that that the arrangement of the feed collector is welded to the support plate of the floor. 4.) Device according to claim 1, characterized in that that the arrangement of the food collector itself with blowing wind, via a feed alone or via two Feeds or several feeds (1) is fed. 009885/0880 _0BielNAL 5.) Device according to claim 1, characterized in that the supply of the collector by connecting channels (10-11) is made or facilitated, their Number and profile Atrart are chosen so that an even distribution of the Vindaenge over 3ede of the air nozzles is guaranteed" 6.) Device according to one of claims 1 to 5, characterized in that Sptiaesammler and connecting channels are made of steel. 7 ·) Device according to one of claims 1 to 5 » characterized in that feeders and connecting channels are made of copper. 8.) Device according to claim 1, characterized in that the arrangement of the Speieeaammler in a housing (| is housed, which is a usual Wind box which is provided with a sealing cover, can act. 9.) Device according to claim 1, characterized in that the feed collector is connected to the blow openings that feed them through flexible pipes. 009885 / Ö880 1718590 10.) Device according to claim 1, characterized in that the feed collector with the blow openings over Small diameter pipes, for example copper pipes, are connected, which have one or more spirals, such that grooves are given a certain elasticity with regard to assembly or disassembly. 11.) Device according to claim 9 and 10, characterized in that that the flexible pipes or the pipes of small diameter at least one of their ends on the blow opening side or are provided at both ends with connecting pieces uit self-locking, which are automatically close tightly as soon as they are shut off with their branch. 12.) Device according to claim 11, characterized in that the blowing air openings with copper pipes (56) small diameter are provided and that their activation or deactivation by simply pressing the End connector of the flexible pipe or the equivalent Small diameter tubes. 13.) Device according to claim 11, characterized in that da £ those through each connector, through 009885/0880 1719990 the lower end of the copper pipe lining each blast port and formed by the bottom support plate Arrangement is constructed in such a way that in the event of an accidental loss of wind due to the pressure between the connecting piece and at the lower end of the copper pipe there is a discharge ^ into the open environment and thus no infiltration between Tube and floor support plate. 14.) Device according to claim 9 or 10, characterized in that that the feed collectors are arranged between two adjacent rows of blow openings in such a way that that free access to these openings for monitoring and maintenance in operation is maintained as well as for Shutdown in the event of abnormally heavy wear compared to the neighboring ÜfSiungen. 15.) Device according to one of claims 1 and 3 to 5, characterized in that each of the floor supports The converter’s welded collector plate is pressed directly against a series of air blast openings and opposite each one Opening is penetrated by a movable injector provided with a closure, the axis of the injector and that of the closure coincide with the achae of the corresponding blowing wind opening. 009885/0880 1758690 16.) Device according to claim 15, wherein each of the blown air openings of the bottom consists of a metallic tube, for example from copper, and that each of these tubes is at the base in a funnel or inlet ends, which can be soldered to the bottom of the converter supporting .Hatte, and that the injector in the upper part ends in a hemispherical head which is pressed tightly against the inner wall of the inlet by this is pressed against the bottom support plate. 17.) Device according to one of claims 15 and 16, characterized in that this hollow injector in the Axis of its upper end has a cylindrical blow opening which ends upwards in a widening, such, that successive edges or edges of the top The end of the injector does not adversely affect the diameter of the cylindrical part on which the amount of gas depends. I »" 18.) Device according to one of claims 15 to 17, characterized in that the inner chamber of the injector which feeds the cylindrical opening is in communication with the wind under continuous pressure in the collector by means of a certain number of channels 1st, 009885/0880 ORIGINAL INSPECTED whose total cross-section is calculated so that the Jasnenge is not limited. 19.) Device according to one of claims 15 to 18, vidurca _u -e;: umi ^ eiclmet that the closure of the In.iector eifc uassive3, ic interior of the latter is arranged clement that ends up in a ball that can be pressed against the cylindrical opening by moving the closure as soon as the nozzle in question is to be put into operation. 20.) Device according to claim 19, characterized in that since the closure is shifted by screwing the latter into the injector will uuer dal? use another suitable means iiiidet. 2.1.) Device according to claim 15 or 16, characterized in that that jLaie base of each nozzle forming melallic Holir, which the Fortr. of a triciter who can take enema on his Au. ^: e-: curses (= .a connection. :: with a discharge channel, which is worked into the plate of the inverter floor, so that when wind escapes at the base of the inlet, it is under pressure. 009885/0880 RADORiGiNAL Any amount of loss is discharged to the outside and is not passed between the plate and the Eonyerterboden. 009885/0880 Blank page