EP0004004A1 - Arrangement on a fume collecting chamber for a metallurgical vessel - Google Patents
Arrangement on a fume collecting chamber for a metallurgical vessel Download PDFInfo
- Publication number
- EP0004004A1 EP0004004A1 EP79100549A EP79100549A EP0004004A1 EP 0004004 A1 EP0004004 A1 EP 0004004A1 EP 79100549 A EP79100549 A EP 79100549A EP 79100549 A EP79100549 A EP 79100549A EP 0004004 A1 EP0004004 A1 EP 0004004A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile frame
- protection shield
- radiation protection
- fixed bearing
- radiation
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
- C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
Definitions
- the invention relates to a device on a smoke collection chamber for a metallurgical vessel, in particular a converter, with an opening which can be closed by a door, the door consisting of an outer profile frame and an inner radiation protection shield and being movable on rollers or rails.
- the smoke collection chamber must be opened for charging scrap and pig iron and for any repair work on the converter, but before the metallurgical process begins, e.g. a fresh operation, be closed again.
- This opening and closing of the smoke collecting chamber is usually carried out by means of two doors which can be moved on rollers on a roadway.
- the doors consist of frame-shaped profile constructions, which protect against heat radiation at the converter ter facing side are covered with radiation shields, which are firmly connected to the profile frame or keyed, screwed or welded. Wheels are arranged on the doors that roll on rails laid on the stage.
- Such sliding doors are exposed to direct radiation and thus to a very high thermal load for a long time during charging, sampling and tapping, which results in malfunctions:
- the radiation protection shield rigidly connected to the profile frame is quickly heated and is subject to strong voltages because its expansion from the rigid profile frame connected to it is prevented. This can lead to plastic, irreversible deformations.
- the rails are exposed to the direct radiation of the converter during the opening time of the doors, so that these rails also warp.
- Another disadvantage of the known devices is heavy soiling of the rails sunk in the stage. On the one hand, the smoke that arises during the metallurgical process and the dust it contains is deposited on the rails;
- the invention aims to avoid these disadvantages and has the object to provide a device of the type described above, which has dirt-protected and direct heat radiation protected roads, the doors ensure a high level of form stability and thus a high level of operational reliability when opening and closing and the consequent their dimensional stability also ensure a seal against flue gas leaks.
- the profile frame is guided on an upper and a lower lane outside the direct heat radiation area, one of these guides being designed as a floating bearing and the other as a fixed bearing and with the profile frame and the radiation shield on one side by means of a fixed bearing and are connected to one another on the other, opposite side by means of a floating bearing.
- the radiation protection shield can deform unhindered relative to the profile frame without exerting any constraining forces on it.
- the radiation shield is expediently connected to the profile frame on the lower side by the fixed bearing, which is advantageously formed by a gutter-cutting connection, while on the upper side and, if appropriate, in between by a bolt-elongated hole connection.
- the upper guide of the profile frame is advantageously designed as a fixed bearing and the lower guide as a floating bearing.
- the guidance of the profile frame as a fixed bearing is formed in that the profile frame with an upper support on the one hand on wheels or rollers with horizontal and on the other hand is guided on impellers with a vertical axis.
- the profile frame is guided as a floating bearing in that the profile frame is guided horizontally in one direction only with one lower support via wheels with a vertical axis on the lower vertical track.
- a particularly simple and secure seal between the radiation protection shield and the smoke collection chamber opening is ensured by a sealing strip into which a seal which is connected to the radiation protection shield engages.
- FIG. 1 shows a side view of a device according to the invention
- Fig. 2 shows a section according to II-II of Fig. 1.
- a tiltable converter 1 the mouth of which describes the turning circle 2, is surrounded by a smoke collecting chamber which is provided with a device according to the invention.
- This comprises a sliding door, generally designated 3, which is formed from the profile frame 4 and the radiation shield 5.
- the profile frame 4 is guided on an upper carriageway 6 and a lower carriageway 7 outside the direct heat radiation area, the upper guide being designed as a fixed bearing and the lower guide as a floating bearing.
- the fixed bearing of the profile frame consists of wheels 9 with a horizontal axis and wheels 10 with a vertical axis, which are mounted on the upper support 8 of the profile frame 4 and roll on rails 11, 12, which are mounted on the main carriageway support 13.
- An additional radiation protection 14 is provided on the underside of the carriageway support 13.
- the floating bearing is formed by the lower carriageway 7, which has a vertical running surface on which the running wheels 16 mounted on the lower support 15 of the profile frame 4 roll with a vertical axis.
- the radiation shield 5 On the side facing the converter, the radiation shield 5 is mounted, which is connected to the frame 4 with a fixed bearing 17 and one or more floating bearings 18.
- the fixed bearing 17 arranged at the bottom of the frame 4 is essentially formed from a notch 19 placed on the lower carrier 15 and a cutting edge 20 mounted in it by gravity and fastened to the protective shield 5.
- the floating bearings 18 consist of elongated holes 22 drilled in tabs 21, which are fixed to the radiation protection shield 5, and of bolts 23 inserted in the elongated holes 22, slidably mounted and fastened to the frame 4.
- a seal 24 is provided, which essentially consists of a sealing strip 26 arranged on the fixed part 25 of the smoke collection chamber, to which a seal 28 fastened in a seal holder 27 is pressed by means of the spring 29, and one both on the seal holder 27 and on the radiation shield 5 attached elastic connection 30.
- the device according to the invention functions in such a way that the statically determined mounting of the radiation protection shield 5 on the frame 4 enables the radiation protection shield to be stretched in all directions.
- the fixed bearing formed by the notch 19 and the cutting edge 20 allows the radiation protection shield 5 to be displaced relatively. to the frame 4 normal to the image plane in FIG. 1 or in the direction of the arrows 31 in FIG. 2.
- the radiation shield extends in the vertical direction a relative displacement between the elongated holes 22 and the bolts 23 instead, the tabs 21 with the. Elongated holes simultaneously form a lateral limitation of the movement of the radiation protection shield relative to the frame 4 in the direction of the arrows 31.
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
Die Erfindung betrifft eine Einrichtung an einer Rauchsammelkammer für ein metallurgisches Gefäß, insbesondere einen Konverter, mit einer durch eine Tür verschließbaren öffnung, wobei die Tür aus einem äußeren Profilrahmen und einem inneren Strahlungsschutzschild besteht und auf Rollen bzw. Schienen verfahrbar ist.The invention relates to a device on a smoke collection chamber for a metallurgical vessel, in particular a converter, with an opening which can be closed by a door, the door consisting of an outer profile frame and an inner radiation protection shield and being movable on rollers or rails.
Bei verschiedenen metallurgischen Prozessen treten starke Rauchgasentwicklungen auf. Aus diesem Grund werden metallurgische Gefäße, insbesondere Konverter, von einer mit einem Rauchgasabzug versehenen Rauchsammelkammer umgeben.Strong flue gas developments occur in various metallurgical processes. For this reason, metallurgical vessels, in particular converters, are surrounded by a smoke collection chamber provided with a flue gas outlet.
Zum Chargieren von Schrott und Roheisen sowie zu eventuellen Reparaturarbeiten am Konverter muß die Rauchsammelkammer geöffnet, jedoch vor Beginn des metallurgischen Prozesses, z.B. eines Frischvorganges, wieder verschlossen werden. Dieses öffnen und Verschließen der Rauchsammelkammer wird üblicherweise mittels zweier auf einer Fahrbahn über Laufrollen verschiebbarer Türen durchgeführt.The smoke collection chamber must be opened for charging scrap and pig iron and for any repair work on the converter, but before the metallurgical process begins, e.g. a fresh operation, be closed again. This opening and closing of the smoke collecting chamber is usually carried out by means of two doors which can be moved on rollers on a roadway.
Es sind bereits Einrichtungen bekannt, bei denen die Türen aus rahmenförmigen Profilkonstruktionen bestehen, die zum Schutz gegen Wärmestrahlung an der dem Konverter zugewandten Seite mit Strahlungsschutzblechen abgedeckt sind, wobei diese mit dem Profilrahmen fest verbunden bzw. verkeilt, verschraubt oder verschweißt sind. An den Türen sind Laufräder angeordnet, die auf auf der Bühne verlegten Schienen rollen. Derartige Schiebetüren sind während des Chargierens, des Probenehmens und während des Abstichs über längere Zeit der direkten Strahlung und damit einer sehr hohen thermischen Belastung ausgesetzt, was Störungen zur Folge hat: Der mit dem Profilrahmen starr verbundene Strahlungsschutzschild wird rasch erwärmt und unterliegt starken Spannungen, weil seine Ausdehnung vom mit ihm verbundenen steifen Profilrahmen verhindert wird. Dadurch kann es zu plastischen, irreversiblen Verformungen kommen. Ferner sind bei den bisher bekannten Einrichtungen die Schienen während der öffnungszeit der Türen der direkten Strahlung des Konverters ausgesetzt, sodaß sich auch diese Schienen verziehen. Ein weiterer Nachteil der bekannten Einrichtungen ist eine starke Verschmutzung der in der Bühne versenkt angeordneten Schienen. Einerseits schlägt sich der während des metallurgischen Prozesses entstehende Rauch mit dem darin enthaltenen Staub auf die Schienen nieder.und andererseits kommt es durch Roheisenspritzer zum Verkrusten der Schienen.Devices are already known in which the doors consist of frame-shaped profile constructions, which protect against heat radiation at the converter ter facing side are covered with radiation shields, which are firmly connected to the profile frame or keyed, screwed or welded. Wheels are arranged on the doors that roll on rails laid on the stage. Such sliding doors are exposed to direct radiation and thus to a very high thermal load for a long time during charging, sampling and tapping, which results in malfunctions: The radiation protection shield rigidly connected to the profile frame is quickly heated and is subject to strong voltages because its expansion from the rigid profile frame connected to it is prevented. This can lead to plastic, irreversible deformations. Furthermore, in the previously known devices, the rails are exposed to the direct radiation of the converter during the opening time of the doors, so that these rails also warp. Another disadvantage of the known devices is heavy soiling of the rails sunk in the stage. On the one hand, the smoke that arises during the metallurgical process and the dust it contains is deposited on the rails;
Die Verformungen des Profilrahmens und der Schienen sowie die starke Verschmutzung und das Verkrusten derselben können oft schon nach kurzer Betriebszeit einen Schwergang bzw. ein Klemmen der Türen verursachen;. auch ist durch die Verformungen die Abdichtung zwischen den Schiebetoren und dem feststehenden Teil der Rauchsammelkammer nicht mehr gewährleistet, sodaß es zu einem unerwünschten Rauchaustritt kommt.The deformations of the profile frame and the rails, as well as heavy soiling and crusting, can often cause the doors to become stiff or jammed after a short period of operation. the deformation between the sliding gates and the fixed part of the smoke collection chamber is no longer guaranteed by the deformations, so that there is an undesirable escape of smoke.
Die Erfindung bezweckt die Vermeidung dieser Nachteile und stellt sich die Aufgabe, eine Einrichtung der eingangs beschriebenen Art zu schaffen, die vor Verschmutzung und direkter Wärmestrahlung geschützte Fahrbahnen aufweist, deren Türen eine hohe Formstabilität und somit eine hohe Betriebssicherheit beim öffnen und Schließen gewährleisten und die infolge ihrer Formstabilität auch eine Abdichtung gegen Rauchgasaustritte gewährleisten.The invention aims to avoid these disadvantages and has the object to provide a device of the type described above, which has dirt-protected and direct heat radiation protected roads, the doors ensure a high level of form stability and thus a high level of operational reliability when opening and closing and the consequent their dimensional stability also ensure a seal against flue gas leaks.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Profilrahmen auf einer oberen und einer unteren Fahrbahn außerhalb des direkten Wärmestrahlungsbereiches geführt ist, wobei eine dieser Führungen als Loslager und die andere als Festlager ausgebildet ist und wobei der Profilrahmen und der Strahlungsschutzschild auf einer Seite mittels eines Festlagers und auf der anderen, gegenüberliegenden Seite mittels eines Loslagers miteinander verbunden sind. Auf diese Weise kann sich der Strahlungsschutzschild gegenüber dem Profilrahmen ungehindert verformen, ohne auf diesen Zwangskräfte auszuüben.This object is achieved in that the profile frame is guided on an upper and a lower lane outside the direct heat radiation area, one of these guides being designed as a floating bearing and the other as a fixed bearing and with the profile frame and the radiation shield on one side by means of a fixed bearing and are connected to one another on the other, opposite side by means of a floating bearing. In this way, the radiation protection shield can deform unhindered relative to the profile frame without exerting any constraining forces on it.
Zweckmäßig erfolgt die Verbindung des Strahlungsschutzschildes mit dem Profilrahmen an der unteren Seite durch das Festlager, welches vorteilhaft durch eine Rinnen-Schneiden-Verbindung gebildet ist, während sie an der oberen Seite und gegebenenfalls dazwischen durch eine Bolzen-Langloch-Verbindung erfolgt.The radiation shield is expediently connected to the profile frame on the lower side by the fixed bearing, which is advantageously formed by a gutter-cutting connection, while on the upper side and, if appropriate, in between by a bolt-elongated hole connection.
Vorteilhaft ist die obere Führung des Profilrahmens als Festlager und die untere Führung als-Loslager ausgebildet.The upper guide of the profile frame is advantageously designed as a fixed bearing and the lower guide as a floating bearing.
Die Führung des Profilrahmens als Festlager wird dadurch gebildet, daß der Profilrahmen mit einem oberen Träger einerseits an Laufrädern bzw. Rollen mit horizontaler und andererseits an Laufrädern mit vertikaler Achse geführt ist.The guidance of the profile frame as a fixed bearing is formed in that the profile frame with an upper support on the one hand on wheels or rollers with horizontal and on the other hand is guided on impellers with a vertical axis.
Die Führung des Profilrahmens als Loslager erfolgt dadurch, daß der Profilrahmen mit einem unteren Träger über Laufräder mit vertikaler Achse an der unteren vertikalen Fahrbahn nur in einer Richtung horizontal geführt ist.The profile frame is guided as a floating bearing in that the profile frame is guided horizontally in one direction only with one lower support via wheels with a vertical axis on the lower vertical track.
Eine besonders einfache und sichere Abdichtung zwischen dem Strahlungsschutzschild und'der Rauchsammelkammer- öffnung ist durch eine Dichtleiste gewährleistet, in die eine mit dem Strahlungsschutzschild federnd verbundene Dichtung eingreift..A particularly simple and secure seal between the radiation protection shield and the smoke collection chamber opening is ensured by a sealing strip into which a seal which is connected to the radiation protection shield engages.
Diese und weitere Merkmale der Erfindung werden anhand der Zeichnung näher erläutert, wobei Fig. 1 eine Seitenansicht einer erfindungsgemäßen Einrichtung und Fig. 2. einen Schnitt gemäß II-II der Fig. 1 darstellt.These and further features of the invention are explained in more detail with reference to the drawing, in which Fig. 1 shows a side view of a device according to the invention and Fig. 2 shows a section according to II-II of Fig. 1.
Ein kippbarer Konverter 1, dessen Mündung den Drehkreis 2 beschreibt, ist von einer Rauchsammelkammer umgeben, die mit einer erfindungsgemäßen Einrichtung versehen ist. Diese umfaßt eine allgemein mit 3 bezeichnete Schiebetür, die aus dem Profilrahmen 4 und dem Strahlungsschutzschild 5 gebildet ist. Der Profilrahmen 4 wird auf einer oberen Fahrbahn 6 und einer unteren Fahrbahn 7 außerhalb des direkten Wärmestrahlungsbereiches geführt, wobei die obere Führung als Festlager und die untere Führung als Loslager ausgebildet ist. Das Festlager des Profilrahmens besteht aus Laufrädern 9 mit horizontaler Achse und Laufrädern 10 mit vertikaler Achse, die auf dem oberen Träger 8 des Profilrahmens 4 gelagert sind und auf Schienen 11, 12 rollen, welche am Hauptfahrbahnträger 13 montiert sind. Ein zusätzlicher Strahlungsschutz 14 ist auf der Unterseite des Fahrbahnträgers 13 vorgesehen.A
Das Loslager wird von der unteren Fahrbahn 7 gebildet, die eine vertikale Lauffläche besitzt, auf der die am unteren Träger 15 des Profilrahmens 4 mit vertikaler Achse gelagerten Laufräder 16 abrollen.The floating bearing is formed by the
An der dem Konverter zugekehrten Seite ist der Strahlungsschutzschild 5 montiert, der mit dem Rahmen 4 mit einem Festlager 17 und einem oder mehreren Loslagern 18 verbunden ist. Das unten am Rahmen 4 angeordnete Festlager 17 wird im wesentlichen aus einer am unteren Träger 15 aufgesetzten Kerbe 19 und einer in dieser durch Schwerkraft gelagerten und am Schutzschild 5 befestigten Schneide 20 gebildet. Die Losläger 18 bestehen aus in Laschen 21 gebohrten Langlöchern 22, die am Strahlungsschutzschild 5 fixiert sind und aus in den Langlöchern 22 eingesetzten, gleitbar gelagerten und am Rahmen 4 befestigten Bolzen 23.On the side facing the converter, the
Zur seitlichen Abdichtung der Tür 3 gegen Rauchaustritt ist eine Abdichtung 24 vorgesehen, die im wesentlichen aus einer am festen Teil 25 der Rauchsammelkammer angeordneten Dichtleiste 26, an welche eine in einem Dichtungshalter-27 befestigte Dichtung 28 mit Hilfe der Feder 29 angedrückt wird, und einer sowohl am Dichtungshalter 27 als auch am Strahlungsschutzschild 5 befestigten elastischen Verbindung 30 besteht.For the lateral sealing of the door 3 against smoke leakage, a
Die erfindungsgemäße Einrichtung funktioniert derart, daß die statisch bestimmte Lagerung des Strahlungsschutzschildes 5 am Rahmen 4 eine Dehnung des Strahlungsschutzschildes in alle Richtungen ermöglicht. Das durch.die Kerbe 19 und die Schneide 20 gebildete Festlager erlaubt eine Verschiebung des Strahlungsschutzschildes 5 relativ . zum Rahmen 4 normal zur Bildebene in Fig. 1 bzw. in Richtung der Pfeile 31 in Fig. 2. Bei einer Dehnung des Strahlungsschutzschildes in vertikaler Richtung findet eine relative Verschiebung zwischen den Langlöchern 22 und den Bolzen 23 statt, wobei die Laschen 21 mit den. Langlöchern gleichzeitig eine seitliche Begrenzung der Bewegung des Strahlungsschutzschildes relativ zum Rahmen 4 in Richtung der Pfeile 31 bilden.The device according to the invention functions in such a way that the statically determined mounting of the
Die als Festlager ausgebildete obere Führung der Tür 3 funktioniert derart, daß die am oberen.Träger 8 gelagerten Laufräder 9 die Hauptmasse der Tür 3 auf die Schiene 11 übertragen, während die Laufräder 10 an der Schiene 12 rollen, die eine horizontale Verschiebung der Tür in Richtung der Pfeile 32 verhindert. Die untere als Loslager ausgebildete Führung hat die Aufgabe, die Tür 3 in horizontaler Richtung zum Konverter hin abzustützen.The upper guide of the door 3, which is designed as a fixed bearing, functions in such a way that the wheels 9 mounted on the upper support 8 transfer the main mass of the door 3 to the rail 11, while the
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT1654/78 | 1978-03-08 | ||
| AT165478A AT356158B (en) | 1978-03-08 | 1978-03-08 | DEVICE ON A SMOKE COLLECTION CHAMBER FOR A METALLURGICAL VESSEL |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0004004A1 true EP0004004A1 (en) | 1979-09-19 |
| EP0004004B1 EP0004004B1 (en) | 1982-09-29 |
Family
ID=3518092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19790100549 Expired EP0004004B1 (en) | 1978-03-08 | 1979-02-23 | Arrangement on a fume collecting chamber for a metallurgical vessel |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0004004B1 (en) |
| AT (1) | AT356158B (en) |
| DE (1) | DE2963760D1 (en) |
| ES (1) | ES478304A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4009919A1 (en) * | 1989-04-03 | 1990-10-04 | Teldix Gmbh | Base module for laser gyro - has optical path provided by capillary tubes arranged in regular polygon |
| GB2431082A (en) * | 2005-09-22 | 2007-04-11 | Nuctech Co Ltd | Shielding door for radiation inspection system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457078B (en) * | 2018-12-18 | 2024-04-16 | 中冶南方工程技术有限公司 | Front door of converter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2256269A1 (en) * | 1971-11-17 | 1973-05-24 | Hoogovens Ijmuiden Bv | METAL PRODUCTION PLANT WITH AT LEAST ONE TILTING CONVERTER |
| DE2313660A1 (en) * | 1973-03-20 | 1974-10-03 | Gutehoffnungshuette Sterkrade | STEEL PRODUCTION PLANT WITH ONE OR MORE ELECTRIC ARC FURNACE |
| DE2733732A1 (en) * | 1976-07-28 | 1978-02-02 | Clesid Sa | COLLECTION DEVICE FOR GAS AND SMOKE FROM A CONVERTER |
-
1978
- 1978-03-08 AT AT165478A patent/AT356158B/en not_active IP Right Cessation
-
1979
- 1979-02-23 DE DE7979100549T patent/DE2963760D1/en not_active Expired
- 1979-02-23 EP EP19790100549 patent/EP0004004B1/en not_active Expired
- 1979-03-05 ES ES478304A patent/ES478304A1/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2256269A1 (en) * | 1971-11-17 | 1973-05-24 | Hoogovens Ijmuiden Bv | METAL PRODUCTION PLANT WITH AT LEAST ONE TILTING CONVERTER |
| DE2313660A1 (en) * | 1973-03-20 | 1974-10-03 | Gutehoffnungshuette Sterkrade | STEEL PRODUCTION PLANT WITH ONE OR MORE ELECTRIC ARC FURNACE |
| DE2733732A1 (en) * | 1976-07-28 | 1978-02-02 | Clesid Sa | COLLECTION DEVICE FOR GAS AND SMOKE FROM A CONVERTER |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4009919A1 (en) * | 1989-04-03 | 1990-10-04 | Teldix Gmbh | Base module for laser gyro - has optical path provided by capillary tubes arranged in regular polygon |
| GB2431082A (en) * | 2005-09-22 | 2007-04-11 | Nuctech Co Ltd | Shielding door for radiation inspection system |
Also Published As
| Publication number | Publication date |
|---|---|
| ATA165478A (en) | 1979-09-15 |
| EP0004004B1 (en) | 1982-09-29 |
| AT356158B (en) | 1980-04-10 |
| ES478304A1 (en) | 1979-11-01 |
| DE2963760D1 (en) | 1982-11-11 |
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