EP0554949A1 - Multistage collector for electron beam tubes - Google Patents

Multistage collector for electron beam tubes Download PDF

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Publication number
EP0554949A1
EP0554949A1 EP93200255A EP93200255A EP0554949A1 EP 0554949 A1 EP0554949 A1 EP 0554949A1 EP 93200255 A EP93200255 A EP 93200255A EP 93200255 A EP93200255 A EP 93200255A EP 0554949 A1 EP0554949 A1 EP 0554949A1
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EP
European Patent Office
Prior art keywords
vacuum
rings
ring
electron beam
insulating material
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.)
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EP93200255A
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German (de)
French (fr)
Inventor
Rudolf Bachmor
Bernd Offermann
Horst Seifert
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Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Patentverwaltung GmbH
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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Application filed by Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Patentverwaltung GmbH
Publication of EP0554949A1 publication Critical patent/EP0554949A1/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/027—Collectors
    • H01J23/0275—Multistage collectors

Definitions

  • the invention relates to a multi-stage collector for electron beam tubes, in particular for klystrons, with a plurality of electrode rings which are arranged one behind the other in the electron beam direction and are connected to graduated electrical potentials, and with insulating ceramic spacer rings which connect adjacent electron rings with one another in an electrically insulating manner.
  • a radiation-cooled multi-stage collector of this type is described in DE-PS 26 36 913.
  • the invention has for its object to provide a multi-stage collector of the type mentioned, which is easy to manufacture and in which voltage flashovers between the collector stages are avoided.
  • first ring plates projecting radially outward from the spacer rings in their end regions are vacuum-tightly soldered
  • second ring plates are soldered to the electrode rings in a vacuum-tight manner, each of which rests with an annular disc region on an associated annular disc region of a first ring plate and is welded to these in a vacuum-tight manner are so that two welding collars are formed, and that the outer surface of the ring plates, which is accessible to the ambient air, and thus the welding collars are covered by an insulating material.
  • the adjacent collector stages can be connected to the ceramic spacer rings simply and securely in a vacuum-tight manner.
  • the welding collars located next to the spacer rings are at a relatively small distance from one another, a voltage flashover is reliably prevented by the covering insulating material.
  • the insulating material can be applied as a covering coating by brushing or spraying.
  • a preferred solution is characterized in that the insulating material is applied in the form of an elastic protective ring.
  • Such a protective ring is preformed in accordance with the contours to be covered and, after the welding collar has been welded, is placed around it in an elastically tight manner. This results in a smooth surface towards the outside air, which offers little resistance to the cooling air flowing past, whereby less air noise also occurs.
  • the insulating material is preferably made of soft elastic silicone rubber. This substance has good electrical properties in terms of dielectric strength. A protective ring made of this soft, elastic material can be stretched far and can be easily applied when installing across other collector levels.
  • the space between adjacent welding collars is completely filled with dielectric insulating material.
  • air gaps between two welding collars are avoided in the direction of the gradient of the electrical field strength, so that the rollover resistance is solely due to the high electrical strength values of the insulating material.
  • the electrode rings are provided with radially projecting cooling lugs, which cooling air is guided past and which extend exclusively in the axial length range outside the ceramic spacer rings.
  • the axial distance between the cooling lugs of adjacent collector stages is then sufficiently large to prevent flashovers between them.
  • an electron gun 2 emits an electron beam 2, which after passing through the tube section 3 reaches the multi-stage collector 4. There the electrons of the electron beam 2 are collected.
  • the tube section 3 essentially contains drift sections (not shown), resonators and magnets for electron beam focusing. In the lower area, RF control energy is supplied to a resonator (arrow 5). In the upper area, RF energy is drawn from a resonator (arrow 6).
  • the multi-stage collector 4 contains five electrodes 7 to 11 and ceramic spacer rings 12 to 16, which isolate the electrodes 7 to 11 at a predetermined distance from each other. Since there is a vacuum in the interior 17, the spacer rings must be connected to adjacent electrodes in a vacuum-tight manner.
  • the electrodes 7 to 11 have different voltage potentials.
  • the potential - 24 kV of the cathode of the electron gun 1 is at the final electrode 11.
  • the electrodes 10, 9, 8 and 7 in this order have, for example, the potentials of -18 kV, -12 kV, -6 kV and "0" kV. Depending on the speed of the electrons of the electron beam 2, these are collected by one of the electrodes 7 to 11.
  • Cooling air is blown through the air flow (arrow 28) between the housing 19 and the outer surfaces of the collector stages, by means of which the heat which is generated when the electrons impact the electrodes 7 to 11 is dissipated.
  • connection according to the invention of the ceramic spacer rings to adjacent electrodes is shown in FIG. 2 for a circled point 18 according to FIG. 1.
  • the electrodes and the attached ring parts (9a in Fig. 2) consist of copper. Since it is difficult to solder the ceramic spacer rings 12 to 16 directly to copper, there is an indirect connection via ring plates 19 and 20 consisting of a copper / nickel alloy, which are soldered between the ring parts 15a and 15b or 15a and 15c of the ceramic spacer ring 15 are, and annular plates 21 and 22 are provided, which are soldered to adjacent electrodes 9 and 10, respectively.
  • the annular disks 19a and 22a on the one hand and 20a and 21a on the other hand lie against one another and are welded to one another at the end regions 23 and 24 in a vacuum-tight manner.
  • the annular disks 19a and 23a on the one hand and the annular disks 21a and 20a on the other hand form welding collars which are at a considerably smaller distance from one another than the cooling lugs 25 and 26 projecting radially from the electrodes 9 and 10.
  • voltage flashovers between the opposing welding collars cannot occur because of this metallic surfaces are covered by the protective ring 27, which is tight on the covered metallic surfaces and on the ring part 15a of the ceramic Spacer ring is present.
  • the protective ring 27 made of soft elastic silicone rubber is elastically expandable for assembly. Since the outer surface of the protective ring 27 is smooth and streamlined, the flow resistance of the cooling air passing from the cooling plate 26 to the cooling plate 25 is low with a correspondingly reduced noise formation.

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Abstract

The invention relates to a multi-stage collector for electron beam tubes, especially for klystrons, having a plurality of electrode rings (7 to 11) which are arranged one behind the other in the electron beam direction (2) and are connected to graduated electrical potentials, and having insulating ceramic spacer rings (12 to 16) which connect adjacent electrode rings (7 to 11) to one another electrically in an insulating and vacuum-tight manner. Despite a simple production capability, voltage flashovers between the collector stages are prevented in that radially outwardly projecting first ring plates (19, 20) are soldered in a vacuum-tight manner onto the spacer rings (12 to 16) in their end regions, in that second ring plates (21, 22) are soldered in a vacuum-tight manner to the electrode rings (7 to 11), which second ring plates (21 to 22) in each case rest by means of an outer ring disc region (21a, 22a) on an associated ring disc region (19a, 20a) of a first ring plate (19, 20) and are welded thereto in a vacuum-tight manner, so that two welded collars are formed, and in that outer surfaces of the ring plates (19 to 22) which are accessible to the surrounding air, and hence the welded collars, are covered by an insulating material. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Mehrstufenkollektor für Elektronenstrahlröhren, insbesondere für Klystrons, mit mehreren Elektrodenringen, welche in Elektronenstrahlrichtung hintereinander angeordnet und an abgestufte elektrische Potentiale angeschlossen sind, und mit isolierenden keramischen Abstandsringen, welche benachbarte Elektronenringe miteinander elektrisch isolierend verbinden.The invention relates to a multi-stage collector for electron beam tubes, in particular for klystrons, with a plurality of electrode rings which are arranged one behind the other in the electron beam direction and are connected to graduated electrical potentials, and with insulating ceramic spacer rings which connect adjacent electron rings with one another in an electrically insulating manner.

Ein strahlungsgekühlter Mehrstufenkollektor dieser Art ist in der DE-PS 26 36 913 beschrieben.A radiation-cooled multi-stage collector of this type is described in DE-PS 26 36 913.

Der Erfindung liegt die Aufgabe zugrunde, einen Mehrstufenkollektor der eingangs genannten Art zu schaffen, welcher einfach herstellbar ist und bei welchem Spannungsüberschläge zwischen den Kollektorstufen vermieden werden.The invention has for its object to provide a multi-stage collector of the type mentioned, which is easy to manufacture and in which voltage flashovers between the collector stages are avoided.

Die Lösung gelingt dadurch, daß an die Abstandsringe in deren Endbereichen radial nach außen abstehende erste Ringbleche vakuumdicht angelötet sind, daß an die Elektrodenringe zweite Ringbleche vakuumdicht angelötet sind, welche jeweils mit einem Ringscheibenbereich an einem zugeordneten Ringscheibenbereich eines ersten Ringbleches anliegen und mit diesen vakuumdicht verschweißt sind, so daß zwei Schweißkragen gebildet sind, und daß der Umgebungsluft zugängliched äußere Fläche der Ringbleche und damit die Schweißkragen durch einen isolierenden Stoff abgedeckt sind.The solution is achieved in that first ring plates projecting radially outward from the spacer rings in their end regions are vacuum-tightly soldered, and second ring plates are soldered to the electrode rings in a vacuum-tight manner, each of which rests with an annular disc region on an associated annular disc region of a first ring plate and is welded to these in a vacuum-tight manner are so that two welding collars are formed, and that the outer surface of the ring plates, which is accessible to the ambient air, and thus the welding collars are covered by an insulating material.

Erfindungsgemäß sind die benachbarten Kollektorstufen einfach und sicher vakuumdicht mit den keramischen Abstandsringen zu verbinden. Obgleich die neben den Abstandsringen befindlichen Schweißkragen einen relativ kleinen Abstand voneinander haben, wird durch den abdeckenden isolierenden Stoff ein Spannungsüberschlag sicher verhindert.According to the invention, the adjacent collector stages can be connected to the ceramic spacer rings simply and securely in a vacuum-tight manner. Although the welding collars located next to the spacer rings are at a relatively small distance from one another, a voltage flashover is reliably prevented by the covering insulating material.

Bei der erfindungsgemäßen Lösung grenzen keine metallischen Flächen an den äußeren Luftraum. Die Entstehung von Kriechwegen wird verhindert. Das ist insbesondere bei luftgekühlten Kollektoren wichtig, weil mit der vorbeistreichenden Kühlluft Staubpartikel mitgeführt werden können, welche sich an den Außenflächen der Schweißkragen und der keramischen Abstandringe ablagern können, so daß dadurch insbesondere bei feuchter Kühlluft Kriechwege entstehen könnten. Eine Ionisierung der Luft an scharfen Kanten der Schweißkragen, wodurch die Entstehung von Überschlägen begünstigt würde, wird vermieden.In the solution according to the invention, no metallic surfaces border the outer air space. The creation of creepage distances is prevented. This is particularly important with air-cooled collectors, because dust particles can be carried along with the passing cooling air, which can be deposited on the outer surfaces of the welding collar and the ceramic spacer rings, so that this could result in creepage distances, especially in moist cooling air. An ionization of the air on sharp edges of the welding collar, which would favor the formation of flashovers, is avoided.

Der isolierende Stoff kann nach dem Verschweißen der Schweißkragen als abdeckende Beschichtung durch Aufstreichen oder Aufspritzen aufgebracht werden. Eine bevorzugte Lösung ist jedoch dadurch gekennzeichnet, daß der isolierende Stoff in Form eines elastischen Schutzrings aufgebracht ist. Ein solcher Schutzring wird entsprechend den abzudeckenden Konturen vorgeformt und nach dem Verschweißen der Schweißkragen um diese elastisch stramm herumgelegt. Dadurch erhält man zur Außenluft hin eine glatte Oberfläche, welche einen geringen Widerstand für die vorbeistreichende Kühlluft bietet, wobei dann auch weniger Luftgeräusche entstehen.After welding the welding collar, the insulating material can be applied as a covering coating by brushing or spraying. A preferred solution, however, is characterized in that the insulating material is applied in the form of an elastic protective ring. Such a protective ring is preformed in accordance with the contours to be covered and, after the welding collar has been welded, is placed around it in an elastically tight manner. This results in a smooth surface towards the outside air, which offers little resistance to the cooling air flowing past, whereby less air noise also occurs.

Vorzugsweise besteht der isolierende Stoff aus weichelastischem Silikonkautschuk. Dieser Stoff hat gute elektrische Eigenschaften bezüglich Spannungsfestigkeit. Ein Schutzring aus diesem weichelastischen Stoff kann weit gedehnt und bei der Montage über andere Kollektorstufen hinweg problemlos aufgebracht werden.The insulating material is preferably made of soft elastic silicone rubber. This substance has good electrical properties in terms of dielectric strength. A protective ring made of this soft, elastic material can be stretched far and can be easily applied when installing across other collector levels.

Gemäß einer besonders vorteilhaften Lösung ist vorgesehen, daß der Abstandsraum zwischen benachbarten Schweißkragen vollständig mit dielektrischem Isolierstoff ausgefüllt ist. Damit werden einerseits in Richtung des Gradienten der elektrischen Feldstärke Luftstrecken zwischen zwei Schweißkragen vermieden, so daß die Überschlagsfestigkeit ausschließlich durch die hohen elektrischen Festigkeitswerte des Isolierstoffs bedingt ist. Andererseits ergibt sich ein weiterer Vorteil, daß wegen der gegenüber Luft höheren relativen Dielektrisitätskonstante des Isolierstoffes eine Erhöhung der Kapazität zwischen zwei Kollektorstufen erreicht wird. Damit wird die Abstrahlung hochfrequenter Störstrahlung wesentlich vermindert.According to a particularly advantageous solution, it is provided that the space between adjacent welding collars is completely filled with dielectric insulating material. On the one hand, air gaps between two welding collars are avoided in the direction of the gradient of the electrical field strength, so that the rollover resistance is solely due to the high electrical strength values of the insulating material. On the other hand, there is a further advantage that an increase in the capacitance between two collector stages is achieved because of the higher relative dielectric constant of the insulating material compared to air. This significantly reduces the emission of high-frequency interference.

Bei einer luftgekühlten Ausführungsform der Erfindung ist vorgesehen, daß die Elektrodenringe mit radial abstehenden Kühlfahnen versehen sind, an welchen Kühlluft vorbeigeführt ist und welche sich ausschließlich im axialen Längenbereich außerhalb der keramischen Abstandsringe erstrecken. Der axiale Abstand zwischen den Kühlfahnen benachbarter Kollektorstufen ist dann genügend groß, um Isolationsüberschläge zwischen diesen zu verhindern.In an air-cooled embodiment of the invention it is provided that the electrode rings are provided with radially projecting cooling lugs, which cooling air is guided past and which extend exclusively in the axial length range outside the ceramic spacer rings. The axial distance between the cooling lugs of adjacent collector stages is then sufficiently large to prevent flashovers between them.

Die Erfindung wird anhand der Beschreibung eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.

Fig. 1
zeigt eine schematische Darstellung eines Klystrons mit mehrstufigem luftgekühlten Kollektor.
Fig. 2
zeigt für einen Teilbereich 18 nach Fig. 1 eine erfindungsgemäße Gestaltung des Verbindungsbereichs zwischen zwei Kollektorstufen.
The invention is explained in more detail with reference to the description of an embodiment shown in the drawing.
Fig. 1
shows a schematic representation of a klystron with multi-stage air-cooled collector.
Fig. 2
1 shows, for a partial area 18 according to FIG. 1, an inventive design of the connecting area between two collector stages.

Bei dem in Fig. 1 angedeuteten Klystron geht von einer Elektronenkanone 1 ein Elektronenstrahl 2 aus, welcher nach dem Durchlauf durch den Röhrenabschnitt 3 in den mehrstufigen Kollektor 4 gelangt. Dort werden die Elektronen des Elektronenstrahls 2 aufgefangen.In the klystron indicated in FIG. 1, an electron gun 2 emits an electron beam 2, which after passing through the tube section 3 reaches the multi-stage collector 4. There the electrons of the electron beam 2 are collected.

Der Röhrenabschnitt 3 enthält im wesentlichen nicht dargestellte Triftstrecken, Resonatoren und Magnete zur Elektronenstrahlbündelung. Im unteren Bereich wird einem Resonator HF-Steuerenergie zugeführt (Pfeil 5). Im oberen Bereich wird aus einem Resonator HF-Energie entnommen (Pfeil 6).The tube section 3 essentially contains drift sections (not shown), resonators and magnets for electron beam focusing. In the lower area, RF control energy is supplied to a resonator (arrow 5). In the upper area, RF energy is drawn from a resonator (arrow 6).

Der mehrstufige Kollektor 4 enthält fünf Elektroden 7 bis 11 und keramische Abstandsringe 12 bis 16, welche die Elektroden 7 bis 11 isolierend im vorgegebenen Abstand zueinander halten. Da im Innenraum 17 Vakuum besteht, müssen die Abstandsringe vakuumdicht mit benachbarten Elektroden verbunden werden.The multi-stage collector 4 contains five electrodes 7 to 11 and ceramic spacer rings 12 to 16, which isolate the electrodes 7 to 11 at a predetermined distance from each other. Since there is a vacuum in the interior 17, the spacer rings must be connected to adjacent electrodes in a vacuum-tight manner.

Die Elektroden 7 bis 11 weisen verschiedene Spannungspotentiale auf. Beispielsweise liegt an der abschließenden Elektrode 11 das Potential - 24 kV der Kathode der Elektronenkanone 1. Die Elektroden 10,9,8 und 7 haben in dieser Reihenfolge beispielsweise die Potentiale -18 kV, -12kV, -6kV und "0"kV. Je nach der Geschwindigkeit der Elektronen des Elektronenstrahls 2 werden diese von einer der Elektroden 7 bis 11 aufgefangen.The electrodes 7 to 11 have different voltage potentials. For example, the potential - 24 kV of the cathode of the electron gun 1 is at the final electrode 11. The electrodes 10, 9, 8 and 7 in this order have, for example, the potentials of -18 kV, -12 kV, -6 kV and "0" kV. Depending on the speed of the electrons of the electron beam 2, these are collected by one of the electrodes 7 to 11.

Durch den Luftstrom (Pfeil 28) zwischen dem Gehäuse 19 und den Außenflächen der Kollektorstufen wird Kühlluft geblasen, durch welche die Wärme abgeführt wird, welche beim Aufprall der Elektronen auf die Elektroden 7 bis 11 entsteht.Cooling air is blown through the air flow (arrow 28) between the housing 19 and the outer surfaces of the collector stages, by means of which the heat which is generated when the electrons impact the electrodes 7 to 11 is dissipated.

Die erfindungsgemäße Verbindung der keramischen Abstandsringe mit benachbarten Elektroden ist in Fig. 2 für eine eingekreiste Stelle 18 nach Fig. 1 dargestellt.The connection according to the invention of the ceramic spacer rings to adjacent electrodes is shown in FIG. 2 for a circled point 18 according to FIG. 1.

Die Elektroden sowie die aufgesetzten Ringteile (9a in Fig. 2) bestehen aus Kupfer. Da eine unmittelbare Verlötung der keramischen Abstandsringe 12 bis 16 mit Kupfer Schwierigkeiten bereitet, ist eine indirekte Verbindung über aus einer Kupfer/Nickel-Legierung bestehende Ringbleche 19 und 20, welche zwischen die Ringteile 15a und 15b bzw. 15a und 15c des keramischen Abstandsringes 15 eingelötet sind, und Ringblechen 21 und 22 vorgesehen, welche an benachbarte Elektroden 9 bzw. 10 angelötet sind.The electrodes and the attached ring parts (9a in Fig. 2) consist of copper. Since it is difficult to solder the ceramic spacer rings 12 to 16 directly to copper, there is an indirect connection via ring plates 19 and 20 consisting of a copper / nickel alloy, which are soldered between the ring parts 15a and 15b or 15a and 15c of the ceramic spacer ring 15 are, and annular plates 21 and 22 are provided, which are soldered to adjacent electrodes 9 and 10, respectively.

Die Ringscheiben 19a und 22a einerseits und 20a und 21a andererseits liegen aneinander und sind an den Endbereichen 23 bzw. 24 miteinander vakuumdicht verschweißt.The annular disks 19a and 22a on the one hand and 20a and 21a on the other hand lie against one another and are welded to one another at the end regions 23 and 24 in a vacuum-tight manner.

Die Ringscheiben 19a und 23a einerseits und die Ringscheiben 21a und 20a andererseits bilden Schweißkragen, welche einen erheblich geringeren Abstand zueinander aufweisen als die radial an den Elektroden 9 und 10 abstehenden Kühlfahnen 25 und 26. Spannungsüberschläge zwischen den gegenüberliegenden Schweißkragen können jedoch nicht entstehen, weil deren metallischen Flächen durch den Schutzring 27 abgedeckt sind, welcher elastisch stramm an den abgedeckten metallischen Flächen und am Ringteil 15a des keramischen Abstandsringes anliegt. Der aus weichelastischem Silikonkautschuk bestehende Schutzring 27 ist zur Montage elastisch aufweitbar. Da die Außenfläche des Schutzringes 27 glatt und strömungsgünstig gestaltet ist, ist der Strömungswiderstand der vom Kühlblech 26 zum Kühlblech 25 vorbeistreichenden Kühlluft bei entsprechend reduzierter Geräuschbildung gering.The annular disks 19a and 23a on the one hand and the annular disks 21a and 20a on the other hand form welding collars which are at a considerably smaller distance from one another than the cooling lugs 25 and 26 projecting radially from the electrodes 9 and 10. However, voltage flashovers between the opposing welding collars cannot occur because of this metallic surfaces are covered by the protective ring 27, which is tight on the covered metallic surfaces and on the ring part 15a of the ceramic Spacer ring is present. The protective ring 27 made of soft elastic silicone rubber is elastically expandable for assembly. Since the outer surface of the protective ring 27 is smooth and streamlined, the flow resistance of the cooling air passing from the cooling plate 26 to the cooling plate 25 is low with a correspondingly reduced noise formation.

Der relativ geringe Abstand der Schweißkragen in Verbindung mit dem zwischenliegenden dielektrischen Material des Schutzrings 27 bewirkt eine Erhöhung der Kapazität zwischen den benachbarten Elektroden 9 und 10, so daß HF-Störabstrahlungen reduziert werden. Auch für diese Wirkung ist Silikon-Kautschuk wegen seiner hohen Dielektrizitätskonstante hervorragend geeignet.The relatively small distance between the welding collars in connection with the intermediate dielectric material of the protective ring 27 causes an increase in the capacitance between the adjacent electrodes 9 and 10, so that RF interference emissions are reduced. Because of its high dielectric constant, silicone rubber is also ideal for this effect.

Claims (5)

Mehrstufenkollektor für Elektronenstrahlröhren, insbesondere für Klystrons, mit mehreren Elektrodenringen (7 bis 11), welche in Elektronenstrahlrichtung (2) hintereinander angeordnet und an abgestufte elektrische Potentiale angeschlossen sind, und mit isolierenden keramischen Abstandsringen (12 bis 16), welche benachbarte Elektrodenringe (7 bis 11) miteinander elektrisch isolierend verbinden,
dadurch gekennzeichnet, daß an die Abstandsringe (12 bis 16) in deren Endbereichen radial nach außen abstehende erste Ringbleche (19,20) vakuumdicht angelötet sind, daß an die Elektrodenringe (7 bis 11) zweite Ringbleche (21,22) vakuumdicht angelötet sind, welche jeweils mit einem Ringscheibenbereich (21a,22a) an einem zugeordneten Ringscheibenbereich (19a,20a) eines ersten Ringbleches (19,20) anliegen und mit diesen vakuumdicht verschweißt sind, so daß zwei Schweißkragen gebildet sind, und daß der Umgebungsluft zugängliche äußere Flächen der Ringbleche (19 bis 22) und damit die Schweißkragen durch einen isolierenden Stoff abgedeckt sind.Multi-stage collector for electron beam tubes, in particular for klystrons, with a plurality of electrode rings (7 to 11), which are arranged one behind the other in the direction of the electron beam (2) and are connected to graduated electrical potentials, and with insulating ceramic spacer rings (12 to 16), which adjoin adjacent electrode rings (7 to 11) connect to each other in an electrically insulating manner,
characterized in that radially outwardly projecting first ring plates (19, 20) are soldered vacuum-tight to the spacer rings (12 to 16) in that second ring plates (21, 22) are soldered vacuum-tight to the electrode rings (7 to 11), which each lie with an annular disk region (21a, 22a) on an associated annular disk region (19a, 20a) of a first annular plate (19, 20) and are welded to them in a vacuum-tight manner, so that two welding collars are formed, and that outer surfaces of the Ring plates (19 to 22) and thus the welding collar are covered by an insulating material. Mehrstufenkollektor nach Anspruch 1,
dadurch gekennzeichnet, daß der isolierende Stoff in Form eines elastischen Schutzrings (27) aufgebracht ist.Multi-stage collector according to claim 1,
characterized in that the insulating material is applied in the form of an elastic protective ring (27). Mehrstufenkollektor nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß der isolierende Stoff aus weichelastischem Silikonkautschuk besteht.Multi-stage collector according to claim 1 or 2,
characterized in that the insulating material consists of soft elastic silicone rubber. Mehrstufenkollektor nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß der Abstandsraum zwischen benachbarten Schweißkragen vollständig mit dielektrischem Isolierstoff ausgefüllt ist.Multi-stage collector according to one of claims 1 to 3,
characterized by
that the space between adjacent welding collars is completely filled with dielectric insulating material. Mehrstufenkollektor nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß die Elektrodenringe (7 bis 11) mit radial abstehenden Kühlfahnen (25,26) versehen sind, an welchen Kühlluft vorbeigeführt ist und welche sich ausschließlich im axialen Längenbereich außerhalb der keramischen Abstandsringe (12 bis 16) erstrecken.Multi-stage collector according to one of claims 1 to 4,
characterized in that the electrode rings (7 to 11) are provided with radially projecting cooling lugs (25, 26), to which cooling air is guided and which extend exclusively in the axial length range outside the ceramic spacer rings (12 to 16).
EP93200255A 1992-02-07 1993-02-02 Multistage collector for electron beam tubes Withdrawn EP0554949A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4203487A DE4203487A1 (en) 1992-02-07 1992-02-07 MULTI-STAGE COLLECTOR FOR ELECTRODE BEAM TUBES
DE4203487 1992-02-07

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EP0554949A1 true EP0554949A1 (en) 1993-08-11

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US6927583B2 (en) * 2001-05-17 2005-08-09 Siemens Vdo Automotive Inc. Fuel sensor
US7368874B2 (en) * 2005-02-18 2008-05-06 Communications and Power Industries, Inc., Satcom Division Dynamic depressed collector

Citations (1)

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US3368104A (en) * 1964-03-17 1968-02-06 Varian Associates Electron beam tube included depressed collector therefor

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JPS5838904B2 (en) * 1974-04-20 1983-08-26 日本電気株式会社 Microhakan
DE2636913C2 (en) * 1976-08-17 1985-06-05 Siemens AG, 1000 Berlin und 8000 München Radiation-cooled multi-stage collector
JPS63214327A (en) * 1986-08-18 1988-09-07 Babcock Hitachi Kk Slurry treatment device
JPH02109234A (en) * 1988-10-18 1990-04-20 Toshiba Corp Collector body structure of microwave tube
JP3038830B2 (en) * 1990-07-26 2000-05-08 日本電気株式会社 Conduction-cooled multistage collector

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DE4203487A1 (en) 1993-08-12
US5418425A (en) 1995-05-23

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