CS240343B1

CS240343B1 - Continuois preheating device especially of air spray nozzles for off-furnace steel treatment

Info

Publication number: CS240343B1
Application number: CS847416A
Authority: CS
Inventors: Rudolf Bodik; Jozef Orocz; Karol Hanigovsky
Original assignee: Rudolf Bodik; Jozef Orocz; Karol Hanigovsky
Priority date: 1984-10-01
Filing date: 1984-10-01
Publication date: 1986-02-13
Also published as: CS741684A1

Description

Vynález sa týká zariadenia pre kontinuálny predohrev najma prefukovaeích trysiek mimopecného spracovania ocele uložených zvisle v prenášacej polohe a rieši problém pravidelnej přípravy prvkov mimopecnej technologie bez nárokov na priestor a pri vysokej mechanizácii.The present invention relates to a device for the continuous preheating of, in particular, blow-off nozzles of the out-of-furnace treatment of steel stored vertically in a transfer position and solves the problem of regular preparation of elements of out-of-furnace technology.

Pře plynulý chotí technologie sekundárnej metalurgie ocele je potřebná zásoba trysiek predohriatych a připravených pre použitie v pánve. Pre stavebné rozměry zásobníka je rozhodujúca dížka trysky daná vefkoshou pánve. Životnost trysiek okrem iného závisí od tepelného stavu před ponořením do roztaveného kovu bez tepeljiého spádu. Pri vysokej energetickej náročnosti predohrevu, pravldelnom odoberaní a přidávaní trysiek je nutná přístupnost a vysoká mechanizáčia. Zásobník na predohrev trysiek, tzv. uzavretej konštrukcie, má tú nevýhodu, že zdvihová výška zariadenia je rovná dvojnásobnej dížke trysky. Táto vlastnost negativné ovplyvňuje priestorové umiestnenie a v krajnom případe znemožňuje použitie tohto typu zásobníka s predohrevom. V případe použitia atmosférického horáka spaluje plynné palivo nedokpnale a nie je ním možné vhodné regulovat tepelný režim predohrevu trysiek a z toho dovodu sa často ohřev přerušuje, čím je využitie energetických zdrojov neefektívne.In order to continuously take advantage of the secondary steel metallurgy technology, a stock of nozzles preheated and ready for use in the ladle is needed. The decisive length of the nozzle is determined by the size of the pan. The life of the nozzles depends, inter alia, on the thermal state before immersion in the molten metal without a temperature gradient. Accessibility and high mechanization are required for the high energy consumption of preheating, regular removal and addition of nozzles. Nozzle preheating tank of a closed construction has the disadvantage that the lifting height of the device is equal to twice the length of the nozzle. This property negatively affects the spatial location and, in extreme cases, makes it impossible to use this type of preheating container. If an atmospheric burner is used, the gas fuel burns incompletely and it is not possible to control the thermal mode of the nozzle preheating and hence the heating is often interrupted, making the use of energy sources inefficient.

Uvedené nedostatky odstraňuje zariadenie pre kontinuálny predohrev najma prefukovacích trysiek mimopecného spracovania ocele pódia vynálezu. Podstata vynálezu spočívá v tom, že zariadenie pozostáva zo spaíovacej komory přípravy predohrievacieho média, ktorej výstupný otvor vyúsťuje do časti obvodu s výhodou celého polkruhu medzikruhového priestoru nad dnom predohrievacej komory. Predohrievacia komora je tvořená vonkajším kruhovým plášťom so svislým vybráním, o velkosti prefukovacej trysky vytvořeným v ostávajúcej časti obvodu. Jej raedzikruhový priestor je vymedzený nosnou rúrou ovládacleho mechanizmu, otočné uloženou na nosnom štípe v ložisku prostredníctvom spojovacej došky. Nad ložiskom je prostredníctvom unášacieho prvku upevněný osový hriadel' opatrený v hornej časti areíačnou pákou natáčania závěsného mechanizmu. Závěsný mechanizmus je tvořený závěsnými konzolami s vybraniaml závěsu, ktoré sú uchytené po obvode hornej vyčnievajúcej časti nosnej rúry, ako aj spodně podpěrné konzoly rozmiestnené súmerne v medzikruží predohrievacej komory. Po obvode stabili240343 žačných rebier nosného štípa pod dnom predohrievacej komory sú s výhodou vytvořené prieťahové otvory a komínový priestor s prieťahom po celej dížke vnútorného priestoru nosnej rúry.These drawbacks are overcome by the device for continuous preheating, in particular of the blowing nozzles of the out-of-furnace steel processing according to the invention. SUMMARY OF THE INVENTION The device consists of a combustion chamber for the preparation of a preheating medium, the outlet of which opens into a part of the periphery preferably of the entire semicircle of the annular space above the bottom of the preheating chamber. The preheating chamber is formed by an outer circular shell with a vertical recess, the size of the blow nozzle formed in the remaining part of the circumference. Its radial space is delimited by the support tube of the actuating mechanism rotatably mounted on the support pin in the bearing by means of a connecting thatch. Above the bearing, an axle shaft is fastened by means of a driving element and is provided in the upper part with a locating lever for pivoting of the suspension mechanism. The hinge mechanism is formed by hinge brackets with hinge recesses that are attached to the periphery of the upper protruding portion of the support tube, as well as the lower support brackets disposed symmetrically in the annulus of the preheating chamber. Preferably, through holes and a chimney space with an elongation over the entire length of the inner space of the support tube are formed around the circumference of the mowing ribs of the support graft below the bottom of the preheating chamber.

Výhody vynálezu sú v tom, že je vytvořené zariadeníe, zaherajúce malý priestor, umožňujúce vysokú mechanizáciu a kontinuitu ohřevu prefukovacích trysiek a hlavně využitie energetických zdrojov je efektivně. Zariadeníe podía vynálezů je s úspechom skúšobne využívané.Advantages of the invention are that it is provided by a space-saving device allowing high mechanization and continuity of the heating of the blow-off nozzles and, in particular, the use of energy sources is efficiently. The device according to the invention is successfully used in the trial.

Příklad uskutočnenla zariadenia podía vynálezu je znázorněný na přiložených výkresoch, pričom na obr. 1 je čelný pohlad na celé zariadenie v řeze a na obr. 2 je pódorysný pohlad na usporiadanie častí zariadenia.An example of an embodiment of the device according to the invention is shown in the accompanying drawings, in which: FIG. 1 is a cross-sectional front view of the entire device, and FIG. 2 is a plan view of an arrangement of parts of the apparatus.

Spalovacia komora 10 pozostávajúca zo spalovacieho priestoru 11, přechodového priestoru 12 a rozvádzacieho priestoru 13 má zaústěné výstupné otvory 14 po celom polobvode medzikružného predohrievacieho priestoru 23 nad dnom 25 predohrievacej komory 20. Predohrievacia komora 20 pozostáva z vonkajšieho kruhového plášťa 21, v ktorého spodnej časti sú prieťahové otvory 26 pod dnom 25, ktoré tvoria komínový chladiaci priestor vo vnútornom priestore nosnej rúry 42 ovládacieho mechanizmu 40. Na ostávajúcom polkruhu plášťa 21 je zvislé vybranie 22 o rozmere predohrievaného prvku, například prefukovacej trysky 60, počnúc od podpěrných konzol 53. Medzikružný predohrievací priestor 23 je v hornej časti otvorený, nad ktorým vyčnieva nosná rúra 42. Po jej obvode sú navesené závěsné konzoly 51 s vybraniami 52 a podpěrné konzoly 53 s vybraniami 54 závěsného mechanizmu 5D. Vo vnútornej časti nosnej rúry 42 je umiestnený ovládací mechanizmus 40, pozostávajúci z osového hriadela 41 s aretačnou pákou 45, ktorý je na nosná rúru 52 uchytený prostredníctvom unášacieho prvku 44. Dalej je nosná rúra 42 otočné uložená na axiálnom ložisku 34 prostredníctvom spojovacej došky 43, ktoré ložisko 34 je uložené v ložiskovej hlavě 33 nosného štípa 31. Nosný štíp 31 je prostredníctvom stabilizačných výstuh 32 uložený v střede pod dnom 25 predohrievacej komory 20.The combustion chamber 10 consisting of the combustion chamber 11, the transition chamber 12 and the distribution chamber 13 has mouth openings 14 over the entire semicircle of the annular preheating chamber 23 above the bottom 25 of the preheating chamber 20. The preheating chamber 20 consists of an outer circular housing 21, bore holes 26 below the bottom 25 that form a chimney cooling space in the interior of the support tube 42 of the actuator 40. On the remaining semicircle of the housing 21 there is a vertical recess 22 with a dimension of preheated element such as a blowing nozzle 60 starting from the support brackets 53. 23 is open at the top, over which the support tube 42 projects. The circumference of the support tube 51 with the recesses 52 and the support brackets 53 with the recesses 54 of the suspension mechanism 5D are suspended. In the inner part of the support tube 42 there is a control mechanism 40 consisting of an axle shaft 41 with a locking lever 45, which is fixed to the support tube 52 by means of a driving element 44. Further, the support tube 42 is rotatably supported on the thrust bearing 34 which bearing 34 is supported in the bearing head 33 of the support pin 31. The support pin 31 is supported by stabilizing stiffeners 32 in the center below the bottom 25 of the preheating chamber 20.

Predohrievané prvky, například prefukovacie trysky 60, sa přinesu, nasunu cez zvislé vybranie 22 a uložia do vybraní 52 a 54 závesnej konzoly 51 a príslušnej podpernej konzoly 53 a to postupné pri pootočení aretačnej páky 45 ovládacieho mechanizmu 40. Po vyhriatí na potrebnú teplotu a podía potřeby v prevádzke, sa pomocou žeriavu trysky 60 vysúvajú a odnášajú, ako aj pripravia nové cez uvedené zvislé vybranie 22.Preheated elements, such as blow nozzles 60, are fed, slid over the vertical recess 22 and placed in the recesses 52 and 54 of the hanger bracket 51 and the respective support bracket 53 as the lock lever 45 of the actuator 40 is rotated. in operation, the nozzles 60 are extended and removed by means of a crane 60, and new ones are prepared through said vertical recess 22.

Vynález možno využiť na rožne technologické účely, ako například pre horáky a súčiastky pri tepelnom spracovaní kovov, v keramickom priemysle a pod.The invention can be used for various technological purposes, such as for burners and components in the heat treatment of metals, in the ceramic industry and the like.

Claims

The support ribs 240343 of the support pin under the bottom of the pre-heating chamber are preferably provided with punch openings and the chimney openings through the entire length of the internal space of the support tube. Advantages of the invention are that a device is provided which occupies a small space allowing high mechanization and continuous heating of the blowing nozzles and in particular the use of energy sources is effective. The inventive device is successfully used in the test. An exemplary embodiment of the inventive device is illustrated in the accompanying drawings, wherein in Fig. 1 the entire device is viewed in cross section and in Fig. 2 is a schematic view of the arrangement of the device parts. The combustion chamber 10 consisting of the combustion space 11, the transition space 12 and the distribution space 13 has outlet openings 14 extending along the entire circumference of the annular pre-heating space 23 above the bottom 25 of the preheating chamber 20. The preheating chamber 20 consists of an outer annular shell 21 in the lower part of which are the portholes. 26 below the bottom 25 forming the chimney-cooling space in the inner space-pipe 42 of the control mechanism 40. At the remaining half-shell 21 there is a vertical recess 22 about the size of the pre-heated element, for example the blow nozzle 00, starting from the support brackets 53. Intermediate preheating space 23 in its upper part, there is an overhead tube 42 above which a suspension tube 51 with recesses 52 and support brackets 53 with recesses 54 of the suspension mechanism 5D are hinged. A control mechanism 40 is provided in the inner part of the support tube 42, consisting of an axial shaft 41 with a locking lever 45 which is attached to the support tube 52 by means of a driving element 44. Furthermore, the support tube 42 is mounted on an axial bearing 34 by means of a connecting dowel 43 which bears 34 in the bearing head 33 of the carrier pin 31. The support pin 31 is centered below the bottom 25 of the preheating chamber via the stabilizing stiffeners 32. Preheated elements, e.g. The nozzles 60 are brought, slid over the vertical recesses 22, and placed in recesses 52 and 54 of the cantilever bracket 51 and the associated support bracket 53, respectively, while rotating the locking lever 45 of the control mechanism 40. After heating to the required temperature and as needed in operation, they are retracted and carried away by the crane 60 as well as the new ones through said vertical recesses 22. The invention can be used for geological purposes such as burners and heat treatment components, in the ceramic industry and the like. OBJECT

Apparatus for continuously preheating pre-blasting nozzles of extra-steel treatment, mounted vertically in a transfer position, characterized in that it consists of a combustion chamber (10) for preparing a preheating medium with an outlet opening (14) extending into a portion of the circumference of the me - a circular pre-heating space (23) above the bottom (25) of the lower portion of the preheating chamber (20) which is formed by an outer annular casing (21) with a vertical bore (22) of the size of the blowing nozzle (60) in the remaining the periphery of the circuit and the carrier (42) of the control mechanism (40) rotatably mounted on the carrier pin (31) of the insert (34). by means of a coupler (43) and a driving element (44), in which further the axle shaft (41) provided with a locking lever (45) of the hinge mechanism formed by the suspension brackets (51) with the hinges (52) of the hinge is mounted in the upper part , attached to the upper protruding portion of the support tube (42) and the support brackets (53) attached to the support tube (42) in the lower portion of the nozzles (60).

2. Apparatus according to claim 1, wherein through the periphery of the stabilizing ribs (32) of the support pin (31) below the bottom (25) of the preheating chamber (20), there are opening apertures (26) and a pinhole in the interior is formed. length of the support tube (42). 2 sheets of drawings