EP0890654B1 - Vorrichtung zur Vergleichmässigung der Gasdruckverteilung über die Austrittsöffnung einer Flachstrahldüse - Google Patents
Vorrichtung zur Vergleichmässigung der Gasdruckverteilung über die Austrittsöffnung einer Flachstrahldüse Download PDFInfo
- Publication number
- EP0890654B1 EP0890654B1 EP98110783A EP98110783A EP0890654B1 EP 0890654 B1 EP0890654 B1 EP 0890654B1 EP 98110783 A EP98110783 A EP 98110783A EP 98110783 A EP98110783 A EP 98110783A EP 0890654 B1 EP0890654 B1 EP 0890654B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe
- gas outlet
- fact
- gas
- outlet holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 239000011701 zinc Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
Definitions
- the invention relates to a device for Uniformization of the gas pressure distribution over the Outlet opening of a flat jet nozzle, in particular a flat jet nozzle for blowing off liquid applied protective metal of steel sheets.
- scraper nozzles For the production of galvanized sheet steel so-called scraper nozzles are used, the excess Zinc of the steel sheet emerging from the zinc bath by means of Blow off gas pressure. (DE 40 24 229 C1, DE-OS 20 46 441) Zur Achieving a uniformly coated steel sheet the scraper nozzles must unite over their entire length have the same gas outlet pressure as possible. This is particularly important at very low blow-off pressures.
- the invention has for its object a To create device that in front of the flat fan nozzle pending gas pressure equalized so far that the escaping gas jet over the entire length of the nozzle has extremely uniform gas outlet pressure.
- This object is achieved with a device solved the one with from the flat jet nozzle gas to be blown and an inner tube this has a flush outer tube, wherein the inner tube and the outer tube each have a large number spaced apart, in the longitudinal direction of the pipe arranged gas outlet openings and relative are mutually adjustable such that the Gas outlet openings of the inner tube with the Gas outlet openings of the outer tube depending on the degree of Adjustment partially or completely covered arrive, the gas outlet openings of the inner tube and the outer tube with partial or complete Coverage essentially symmetrical to Outlet opening of the flat jet nozzle are arranged.
- the inner tube opposite the outer tube can the openings of the outer tube and the inner tube so in overlap brought that under a higher pressure standing gas in the inner tube evenly, regulated and temporally adapted to the production process in the interior the blow-off nozzle.
- the zinc blow-off nozzle is thus over the entire nozzle length with the same pre-pressure acted upon and can in turn an even Blow-off pressure over the entire nozzle length towards the Dispense galvanized steel sheet. It is possible that required uniform blow-off pressure even at low To achieve blow-off pressures.
- a preferred embodiment of the invention Device is characterized in that either Inner tube or the outer tube fixed and the other tube is rotatably mounted. In this way the user can Outlet opening of the flat jet nozzle escaping gas pressure can be controlled very precisely and precisely.
- the inner tube can be charged with gas from two sides. This design enables the equalization further optimize the gas pressure distribution.
- the gas outlet openings preferably have in the inner tube a larger cross section than that corresponding gas outlet openings in the outer tube. This configuration also advantageously contributes Uniformization of the gas pressure distribution on the Outlet opening of the flat jet nozzle at.
- the gas outlet openings in the inner tube are preferred formed in the form of slots that run across the Longitudinal axis of the inner tube run.
- the one with the Corresponding gas outlet openings in the inner tube Gas outlet openings in the outer tube can preferably also from transverse to the pipe longitudinal axis Slots exist. This advantageous embodiment enables a stepless regulation of the Gas outlet pressure at the flat jet nozzle.
- the gas outlet openings in the outer tube can also consist of several parallel ones There are rows of holes that extend over part of the Extend pipe circumference.
- the device of the invention can be both new as well as with existing flat jet nozzles realize. If there is enough space, can the device according to the invention in an existing Flat jet nozzle within one on the flat jet nozzle attached, an opening to the interior of the Housing having a flat jet nozzle can be mounted. The device can also save space within the Flat jet nozzle can be installed. This arrangement is especially with newly manufactured flat jet nozzles expedient.
- Figure 1 shows a first embodiment of a device according to the invention.
- the device exists from a fixed, closed at one end Outer tube 1 and an inner tube rotatably mounted therein 2.
- On the inner tube 2 is a rotary connection 3 stationary gas supply line 4 connected via which Blow-off gas 12 is supplied.
- a lever 10 attached to the not rotary actuator shown is coupled.
- the outer tube 1 is via throat-shaped bearings on the flat fan nozzle (not shown) fixed.
- the outer tube 1 and the inner tube 2 each have one A large number of parallel, transverse to the longitudinal axis of the pipe Slots for the gas outlet.
- Figures 5a and 5b is shown by a rotary movement 11 via the lever 10 formed in the inner tube 2 Slots 7 with the slots 5 in the outer tube 1 in Brought coverage.
- Fig. 5a a partial Coverage of slots 5 and 7, namely a half 5b is shown in the open position full coverage or the fully open Position.
- the degree of coverage of slots 5 and 7 depends on the pressure requirement 14, the one to galvanized steel sheet 15 should act (see FIG. 7 and 8).
- Figure 3 shows a longitudinal section through the device 1, which here in an additional housing Flat jet nozzle 8 or 13 in the interior Flat jet nozzle 9 is mounted (see FIGS. 7 and 8).
- the outer tube 1 which is closed at the end, projects through a circular opening in the wall of the flat jet nozzle in their interior 13.
- the outer tube 1 faces outside the flat jet nozzle 8 or 9 on a flange that with the flat jet nozzle is welded or screwed. It it can be seen that the gas outlet openings arranged symmetrically within the flat jet nozzle are, i.e. the distance of the far left Gas outlet opening to the left end wall of the nozzle and the Distance from the rightmost gas outlet to right nozzle end wall are the same.
- Fig. 4 shows a preferred variant of the device according to the invention.
- both ends of the Inner tube via rotary connections 3 each with a stationary gas supply line 4 connected.
- the outer tube penetrates the flat jet nozzle 8 or 9 both on their right and on their left Face.
- the assembly of the outer tube 1 and inner tube 2 existing control unit can be used as required in the interior 13 of the flat jet nozzle 9 (see FIG. 8) or in one the flat jet nozzle 8 attached housing 16, which is open to the interior 13 of the flat jet nozzle 8 (see Fig. 7).
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
- Nozzles (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Lasers (AREA)
Description
- Fig. 1
- eine perspektivische Ansicht einer erfindungsgemäßen Vorrichtung mit quer zur Längsachse des Außenrohrs verlaufenden Schlitzen für den Gasaustritt;
- Fig. 2
- eine perspektivische Ansicht einer zweiten Ausführungsform der erfindungsgemäßen Vorrichtung mit im Außenrohr ausgebildeten Lochreihen für den Gasaustritt;
- Fig. 3
- einen Längsschnitt durch eine innerhalb bzw. an einer Flachstrahldüse montierten erfindungsgemäßen Vorrichtung mit einseitigem Gaseintritt;
- Fig. 4
- einen Längsschnitt durch eine innerhalb bzw. an einer Flachstrahldüse montierten erfindungsgemäßen Vorrichtung mit einem von zwei Seiten mit Gas beaufschlagbaren Innenrohr;
- Fig. 5
- einen Querschnitt durch das Außenrohr und das Innenrohr der Vorrichtung gemäß Fig. 1, wobei Fig. 5a eine halb geöffnete Stellung und Fig. 5b eine voll geöffnete Stellung der Gasaustrittsöffnungen zeigen;
- Fig. 6
- einen Querschnitt durch das Außenrohr und das Innenrohr der Vorrichtung gemäß Fig. 2, wobei Fig. 6a eine halb geöffnete Stellung und Fig. 6b eine voll geöffnete Stellung der Gasaustrittsöffnungen zeigen;
- Fig. 7
- einen Querschnitt durch eine Zinkabstreifdüse, auf der eine erfindungsgemäße Vorrichtung in einem Zusatzgehäuse montiert ist; und
- Fig. 8
- einen Querschnitt durch eine Zinkabstreifdüse, in deren Innenraum eine erfindungsgemäße Vorrichtung angeordnet ist.
Claims (10)
- Vorrichtung zur Vergleichmäßigung der Gasdruckverteilung über die Austrittsöffnung (14) einer Flachstrahldüse (9),
gekennzeichnet durch
ein mit dem aus der Flachstrahldüse (8,9) auszublasenden Gas beaufschlagbares Innenrohr (2) und ein dieses bündig umschließendes Außenrohr (1), wobei das Innenrohr (2) und das Außenrohr (1) jeweils eine Vielzahl in Rohrlängsrichtung angeordneter, zueinander beabstandeter Gasaustrittsöffnungen (5,6,7) aufweisen und relativ zueinander derart verstellbar sind, daß die Gasaustrittsöffnungen (7) des Innenrohres (2) mit den Gasaustrittsöffnungen (5,6) des Außenrohres (1) je nach Grad der Verstellung teilweise oder vollständig in Überdeckung gelangen, wobei die Gasaustrittsöffnungen (5,6,7) des Innenrohres (2) und des Außenrohres (1) bei teilweiser oder vollständiger Überdeckung im wesentlichen symmetrisch zur Austrittsöffnung (14) der Flachstrahldüse (8,9) angeordnet sind. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß das Innenrohr (2) oder das Außenrohr (1) fixiert und das andere Rohr (Innenrohr (2) oder Außenrohr (1)) drehbar gelagert ist. - Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß das Innenrohr (2) von zwei Seiten mit Gas beaufschlagbar ist. - Vorrichtung nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, daß die zu den Gasaustrittsöffnungen (5,6) im Außenrohr (1) korrespondierenden Gasaustrittsöffnungen (7) im Innenrohr (2) einen im Verhältnis größeren Querschnitt aufweisen. - Vorrichtung nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, daß die Gasaustrittsöffnungen (7) im Innenrohr (2) aus quer zu seiner Längsachse verlaufenden Schlitzen bestehen. - Vorrichtung nach Anspruch 5,
dadurch gekennzeichnet, daß die Gasaustrittsöffnungen im Außenrohr (1) aus quer zu seiner Längsachse verlaufenden Schlitzen (5) bestehen. - Vorrichtung nach Anspruch 5,
dadurch gekennzeichnet, daß die Gasaustrittsöffnungen im Außenrohr (1) aus über einen Teil seines Umfangs quer zu seiner Längsachse verlaufenden Lochreihen (6) bestehen. - Vorrichtung nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, daß das Innenrohr (2) oder das Außenrohr (1) mit einem Drehantrieb gekoppelt ist. - Vorrichtung nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, daß diese innerhalb eines an der Flachstrahldüse (8) angebrachten, eine Öffnung zum Innenraum der Flachstrahldüse (8) aufweisenden Gehäuse (16) montiert ist. - Vorrichtung nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, daß diese innerhalb der Flachstrahldüse (9) montiert ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19729232 | 1997-07-09 | ||
| DE19729232A DE19729232C1 (de) | 1997-07-09 | 1997-07-09 | Vorrichtung zur Vergleichmäßigung der Gasdruckverteilung über die Austrittsöffnung einer Flachstrahldüse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0890654A1 EP0890654A1 (de) | 1999-01-13 |
| EP0890654B1 true EP0890654B1 (de) | 2001-08-29 |
Family
ID=7835067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98110783A Expired - Lifetime EP0890654B1 (de) | 1997-07-09 | 1998-06-12 | Vorrichtung zur Vergleichmässigung der Gasdruckverteilung über die Austrittsöffnung einer Flachstrahldüse |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0890654B1 (de) |
| AT (1) | ATE204925T1 (de) |
| DE (2) | DE19729232C1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19954231C1 (de) * | 1999-11-04 | 2000-12-28 | Duma Masch Anlagenbau | Vorrichtung zur Vergleichmäßigung der Gasdruckverteilung über die Austrittsöffnung einer Flachstrahldüse |
| ITMI20111131A1 (it) * | 2011-06-21 | 2012-12-22 | Danieli Off Mecc | Dispositivo di generazione di getto di gas per processi di rivestimento di nastri metallici |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3938468A (en) * | 1970-04-29 | 1976-02-17 | Wheeling-Pittsburgh Steel Corporation | Apparatus for wiping liquid from a strip |
| JPS6058785B2 (ja) * | 1981-09-16 | 1985-12-21 | 日新製鋼株式会社 | 連続溶融メツキ装置のノズルヘツダ |
| JPS6082652A (ja) * | 1983-10-07 | 1985-05-10 | Nisshin Steel Co Ltd | 気体絞り装置 |
| US4499853A (en) * | 1983-12-09 | 1985-02-19 | Rca Corporation | Distributor tube for CVD reactor |
| DE4024229C1 (de) | 1990-07-31 | 1991-07-18 | Heinrich 4100 Duisburg De Pannenbecker | |
| JPH04285147A (ja) * | 1991-03-14 | 1992-10-09 | Kawasaki Steel Corp | ガスワイピングノズル |
-
1997
- 1997-07-09 DE DE19729232A patent/DE19729232C1/de not_active Expired - Lifetime
-
1998
- 1998-06-12 DE DE59801291T patent/DE59801291D1/de not_active Expired - Lifetime
- 1998-06-12 EP EP98110783A patent/EP0890654B1/de not_active Expired - Lifetime
- 1998-06-12 AT AT98110783T patent/ATE204925T1/de active
Also Published As
| Publication number | Publication date |
|---|---|
| ATE204925T1 (de) | 2001-09-15 |
| DE19729232C1 (de) | 1999-04-08 |
| EP0890654A1 (de) | 1999-01-13 |
| DE59801291D1 (de) | 2001-10-04 |
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