DE2810493C3 - Device for noise reduction when blowing out hot-dip galvanized pipes - Google Patents
Device for noise reduction when blowing out hot-dip galvanized pipesInfo
- Publication number
- DE2810493C3 DE2810493C3 DE19782810493 DE2810493A DE2810493C3 DE 2810493 C3 DE2810493 C3 DE 2810493C3 DE 19782810493 DE19782810493 DE 19782810493 DE 2810493 A DE2810493 A DE 2810493A DE 2810493 C3 DE2810493 C3 DE 2810493C3
- Authority
- DE
- Germany
- Prior art keywords
- expansion box
- pipe
- blowing out
- opening
- dip galvanized
- 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
Links
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
- C23C2/185—Tubes; Wires
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
- Treatment Of Fiber Materials (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zur Lärmminderung beim Ausblasen feuerverzinkter Rohre mit Hilfe von Dampf unter Verwendung eines schallgedämpften an einen Exhaustor angeschlossenen Expansionskasten.The invention relates to a device for reducing noise when blowing out hot-dip galvanized pipes with the aid of steam using a silenced expansion box attached to an exhaustor.
Es ist bekannt, beim Innenverzinken von Röhren die Rohre nach dem Ausziehen aus dem Verzinkungsbad mit Dampf auszublasen. Da dieses Ausblasen mit ca. 15atü erfolgt, wird, wenn das Ausblasen in den freiem Raum erfolgt, eine äußerst starke Lärmbelästigung erzeugt, die etwa bei 130 dB (A) liegt.It is known, in the case of internal galvanizing of pipes, that the pipes are drawn out of the galvanizing bath blow out with steam. Since this blowing out takes place with approx. 15atü, if the blowing out in the free Room, generates extremely strong noise pollution, which is around 130 dB (A).
Es ist auch bereits ein Verfahren zur Lärmminderung beim Ausblasen feuerverzinkter Rohre bekannt, (DE-PS 44 944) bei dem das freie Rohrende an einen auf ca. 42O0C beheizten negativ-konischen Trichter angekoppelt wird, der in eine Frontplatte eingebaut, Teil eines verfahrbaren schallgedämpften Expansionskastens ist. Nachteile dieser Vorrichtung sind die bei diesem Verfahren notwendige, aber komplizierte Beheizung bzw. die dazugehörige Meß- und Regeltechnik, insbesondere aber die geringe Standzeit des negativ-konischen Ankopplungstrichters.There is also already a method for noise reduction when blowing out hot-dip galvanized pipes known (DE-PS 44 944) in which the free pipe end is coupled to a negative-conical funnel heated to about 420 0 C, which is built into a front panel, part of a movable silenced expansion box is. Disadvantages of this device are the complicated heating, which is necessary with this method, and the associated measuring and control technology, but in particular the short service life of the negative-conical coupling funnel.
Aufgabe der Erfindung ist es, eine Vorrichtung zur Lärmminderung beim Ausblasen verzinkter Rohre zu Schaffen, die ein Ausblasen ohne Beschädigung der Zinkschicht mit zulässigen dB(A)-Werten ohne zusätzliche Erwärmung in einfacher Weise ermöglicht.The object of the invention is to provide a device for reducing noise when blowing out galvanized pipes Create that blowing out without damaging the zinc layer with admissible dB (A) values without additional Allows heating in a simple manner.
ίο Zur Lösung dieser Aufgabe wird erfindungsgemäß eine Vorrichtung vorgeschlagen, wie sie in den Patentansprüchen beschrieben istTo solve this problem, according to the invention proposed a device as described in the claims
Der Vorteil der erfindungsgemäßen Vorrichtung liegt darin, daß keine Zusatzeinrichtung für die Erwärmung des auszublasenden Mediums erforderlich ist, d. h„ daß durch den Fortfall des beheizten, negativ-konischen Trichters ein störungsfreier Betriebsablauf gewährleistet ist Zusammen mit der vereinfachten ortsfesten Anordnung der Vorrichtung wird auch ein wirtschaftlieher Betrieb derselben erzielt.The advantage of the device according to the invention is that no additional device for heating of the medium to be blown out is required, d. h "that by eliminating the heated, negative-conical Funnel a trouble-free operational sequence is guaranteed together with the simplified stationary By arranging the device, economical operation of the same is also achieved.
In den Zeichnungen ist eine mögliche Ausführungsform einer erfindungsgemäßen Vorrichtung schematisch dargestellt. Es zeigtOne possible embodiment of a device according to the invention is shown schematically in the drawings shown. It shows
F i g. 1 die Vorrichtung in Blasstellung im Schnitt,F i g. 1 the device in the blowing position in section,
F i g. 2 eine Vorderansicht der Vorrichtung.F i g. Figure 2 is a front view of the device.
In F i g. 1 ist das auf dem Rollgang in die Vorrichtung transportierte Rohr 3 ca. 100 mm durch die öffnung 2 in die Vorrichtung eingefahren, bis sie an den Anschlag 4 anschlägt. An der Vorderwand sind drehbewegliche über Pneumatik- oder Hydraulik-Zylinder betätigte Klappen 6 angeordnet, in die Einsätze 7 mit dem Rohrdurchmesser entsprechenden Ausnehmungen 8 eingesetzt sind. In dem Expansionskasten 1 ist außer dem Anschlag 4 noch ein Prallblech 5 vorgesehen. Nach dem Einfahren wird der Anschlag 4 weggeklappt, es werden die bis zu diesem Zeitpunkt geöffneten Klappen 7 geschlossen und das Ausblasen kann über das gleichzeitig an das Rohr herangefahrene Ausblasventil beginnen.In Fig. 1 is the one on the roller table in the device The transported tube 3 is moved approx. 100 mm through the opening 2 into the device until it hits the stop 4 strikes. On the front wall, rotatable pneumatic or hydraulic cylinders are operated Flaps 6 arranged in the inserts 7 with recesses 8 corresponding to the pipe diameter are used. In addition to the stop 4, a baffle plate 5 is also provided in the expansion box 1. To the stop 4 is folded away when retracting; the flaps that have been open up to this point in time become 7 is closed and the blow-out can be carried out via the blow-out valve that is simultaneously brought up to the pipe kick off.
Nach Beendigung des Vorganges fährt das Ausblasventil in die Ausgangslage zurück, die Klappen 6 öffnen
sich und das Rohr 3 kann ausgefahren und ausgeworfen werden.
Durch das im Innern des Expansionskastens 1 angeordnete Prallblech 5 werden die beim Ausblasen
mitgerissenen Zinkpartikel niedergeschlagen und können von Zeit zu Zeit über eine Arbeitsöffnung entfernt
werden.After completion of the process, the blow-out valve moves back to the starting position, the flaps 6 open and the tube 3 can be extended and ejected.
By means of the baffle plate 5 arranged in the interior of the expansion box 1, the zinc particles entrained when blowing out are knocked down and can be removed from time to time via a work opening.
Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782810493 DE2810493C3 (en) | 1978-03-09 | 1978-03-09 | Device for noise reduction when blowing out hot-dip galvanized pipes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782810493 DE2810493C3 (en) | 1978-03-09 | 1978-03-09 | Device for noise reduction when blowing out hot-dip galvanized pipes |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2810493A1 DE2810493A1 (en) | 1979-09-13 |
DE2810493B2 DE2810493B2 (en) | 1980-02-28 |
DE2810493C3 true DE2810493C3 (en) | 1980-10-23 |
Family
ID=6034103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19782810493 Expired DE2810493C3 (en) | 1978-03-09 | 1978-03-09 | Device for noise reduction when blowing out hot-dip galvanized pipes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2810493C3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3027387C2 (en) * | 1980-07-17 | 1982-02-04 | Mannesmann AG, 4000 Düsseldorf | Device for noise reduction when blowing out galvanized pipes |
IT1249695B (en) * | 1991-09-10 | 1995-03-09 | Tubi Dalmine Ilva Srl | PERFECTED SILENCED DEVICE FOR BLOWING HOT GALVANIZED PIPES. |
-
1978
- 1978-03-09 DE DE19782810493 patent/DE2810493C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2810493B2 (en) | 1980-02-28 |
DE2810493A1 (en) | 1979-09-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAP | Request for examination filed | ||
OD | Request for examination | ||
C3 | Grant after two publication steps (3rd publication) | ||
8339 | Ceased/non-payment of the annual fee |