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DE1033340B - Tension grid for electrical discharge vessels - Google Patents

Tension grid for electrical discharge vessels

Info

Publication number
DE1033340B
DE1033340B DES37946A DES0037946A DE1033340B DE 1033340 B DE1033340 B DE 1033340B DE S37946 A DES37946 A DE S37946A DE S0037946 A DES0037946 A DE S0037946A DE 1033340 B DE1033340 B DE 1033340B
Authority
DE
Germany
Prior art keywords
grid
tungsten
electrical discharge
discharge vessels
tension
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.)
Pending
Application number
DES37946A
Other languages
German (de)
Inventor
Walter Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Corp
Original Assignee
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Corp filed Critical Siemens Corp
Priority to DES37946A priority Critical patent/DE1033340B/en
Publication of DE1033340B publication Critical patent/DE1033340B/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28Non-electron-emitting electrodes; Screens
    • H01J19/38Control electrodes, e.g. grid
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00Discharge tubes and lamps
    • H01J2893/0001Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012Constructional arrangements
    • H01J2893/0015Non-sealed electrodes
    • H01J2893/0016Planar grids

Landscapes

  • Electrostatic Separation (AREA)

Description

Es sind Gitterelektroden für elektrische Entladungsgefäße bekanntgeworden, bei denen die einzelnen Gitterdrähte auf einem starren Rahmen fest aufgespannt sind. Bei solchen Gittern sind die Gitterholme meist aus Molybdän hergestellt. Diese Holme haben zwar eine hohe Warmfestigkeit, besitzen jedoch den Nachteil, daß bei besonders dünner Ausbildung derselben die mechanische Stabilität in vielen Fällen nicht ausreichend genug ist.There are grid electrodes for electrical discharge vessels are known in which the individual Lattice wires are firmly stretched on a rigid frame. In such grids are the bars mostly made from molybdenum. Although these spars have a high heat resistance, they have the disadvantage that the mechanical stability in many cases with a particularly thin design is not sufficient enough.

Es sind deshalb bereits Spanngitter, jedoch nur für Scheibenröhren bekanntgeworden, bei denen der Spannrahmen etwa von der Form einer Kreisringscheibe, also aus einem Stück aus Wolfram hergestellt ist. Bei diesem bekannten Spanngitter tritt nämlich das Problem der Querversteifungen und damit die Schwierigkeit bei der Herstellung von mechanischen Verbindungen zwischen Teilen, die zum Teil aus Wolfram bestehen, gar nicht auf.There are therefore already tension grids, but only become known for disc tubes where the The clamping frame is roughly in the form of a circular ring disk, i.e. made from a single piece of tungsten is. In this known tensioning grid, namely, the problem of transverse stiffening occurs and thus the difficulty in making mechanical connections between parts intended for Part made of tungsten, not at all.

Der Erfindung liegt die Aufgabe zugrunde, ein Spanngitter zu schaffen, bei dem die Kapazität zwischen Gitter und der Nachbarelektrode, insbesondere der Kathode, nach Möglichkeit verringert werden soll. Weiterhin sollen die gesamten räumlichen Abmessungen besonders klein gehalten werden, um dadurch auch eine Verringerung der Heizleistung zu bewirken. Dies bedeutet bei hoher Warmfestigkeit des Materials eine Erhöhung der mechanischen Belastbarkeit der Holme, was z. B. bei dichterer Bespannung, bei Verwendung dickerer Wickeldrähte wünschenswert ist, die entgegen den üblichen Bemessungen von etwa 8 μ eine größere Stärke von beispielsweise 15 μ aufweisen können, ohne daß dabei die Holmstärke vergrößert werden muß. Außerdem ist in vielen Fällen ein Gitter von verhältnismäßig großer Länge wünschenswert.The invention is based on the object of creating a tension grid in which the capacitance between the grid and the neighboring electrode, especially the cathode, reduced if possible shall be. Furthermore, the overall spatial dimensions should be kept particularly small, in order to thereby also bring about a reduction in the heating output. This means with high heat resistance of the material an increase in the mechanical strength of the spars, which z. B. with thicker covering, when using thicker winding wires is desirable, which is contrary to the usual dimensions of about 8 μ can have a greater thickness of 15 μ, for example, without the Strut thickness must be increased. In addition, in many cases a grid is relatively large Length desirable.

Gelöst wird diese Aufgabe bei einem Spanngitter für elektrische Entladungsgefäße mit einem aus Holmen und Querversteifungen bestehenden Spannrahmen, auf den die Gitterdrähte durch Wickeln aufgebracht sind, nach der Erfindung dadurch, daß die Holme, die Querversteifungen und die Gitterdrähte aus Wolfram oder aus wolframhaltigem Material bestehen. Mit Wolfram ist ein Material hoher Warmfestigkeit gegeben, welches gleichzeitig eine hohe mechanische Stabilität besitzt. Weiterhin hat Wolfram gegenüber Molybdän den Vorteil eines geringeren thermischen Ausdehnungskoeffizienten.This task is solved with a tension grid for electrical discharge vessels with an off Spars and cross stiffeners existing tensioning frame to which the grid wires are applied by winding are, according to the invention, in that the spars, the cross stiffeners and the lattice wires consist of tungsten or material containing tungsten. With tungsten is a material with high heat resistance given, which at the same time has a high mechanical stability. Furthermore, tungsten has compared to molybdenum the advantage of a lower coefficient of thermal expansion.

An Hand der Zeichnung soll die Erfindung näher erläutert werden. Die Zeichnung zeigt ein Aus-The invention is to be explained in more detail with reference to the drawing. The drawing shows an

Spanngitter
für elektrische Entladungsgefäße
Tension grid
for electrical discharge vessels

Anmelder:
Siemens & Halske Aktiengesellschaft,
Applicant:
Siemens & Halske Aktiengesellschaft,

Berlin und München,
München 2, Wittelsbacherplatz 2
Berlin and Munich,
Munich 2, Wittelsbacherplatz 2

Walter Schneider, München,
ist als Erfinder genannt worden
Walter Schneider, Munich,
has been named as the inventor

führungbeispiel in seinen für die Erfindung wesentlichen Teilen in vereinfachter Darstellung. Es handelt sich hierbei um ein Spanngitter, bei dem die beiden Holme 1 und 2 aus Wolfram oder wolframhaltigem Material bestehen. Die Gitterdrähte 3 bestehen zweckmäßig aus Wolfram oder wolframhaltigem Material, insbesondere thoriertem Wolframdraht. Die Querverstrebungen 4 und 5, welche das Gitter zu einem starren Rahmen vereinigen, bestehen ebenfalls aus Wolfram oder wolframhaltigem Material. Die Wahl dieses Materials gewährleistet eine hohe mechanische Stabilität auch bei solchen Gitterelektroden, die eine verhältnismäßig große Länge besitzen.Management example in its essential parts for the invention in a simplified representation. It deals This involves a tensioning grid in which the two bars 1 and 2 are made of tungsten or containing tungsten Material. The grid wires 3 are expediently made of tungsten or tungsten-containing material, especially thoriated tungsten wire. The cross braces 4 and 5, which the grid to one Unite rigid frames are also made of tungsten or tungsten-containing material. The vote this material ensures a high mechanical stability even with those grid electrodes that have a have a relatively great length.

Claims (2)

Patentansprüche:Patent claims: 1. Spanngitter für elektrische Entladungsgefäße mit einem aus Holmen und Querversteifungen bestehenden Spannrahmen, auf den die Gitterdrähte durch Wickeln aufgebracht sind, dadurch gekennzeichnet, daß die Holme, die Querversteifungen und die Gitterdrähte aus Wolfram oder aus wolframhaltigem Material bestehen.1. Clamping grid for electrical discharge vessels with one made of spars and cross stiffeners existing stenter frame, to which the grid wires are applied by winding, thereby characterized in that the spars, the cross stiffeners and the grid wires made of tungsten or consist of tungsten-containing material. 2. Spanngitter nach Anspruch 1, dadurch gekennzeichnet, daß die Gitterdrähte aus thoriertem Wolframdraht bestehen.2. tension grid according to claim 1, characterized in that the grid wires made of thoriated Made of tungsten wire.
DES37946A 1954-03-03 1954-03-03 Tension grid for electrical discharge vessels Pending DE1033340B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES37946A DE1033340B (en) 1954-03-03 1954-03-03 Tension grid for electrical discharge vessels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES37946A DE1033340B (en) 1954-03-03 1954-03-03 Tension grid for electrical discharge vessels

Publications (1)

Publication Number Publication Date
DE1033340B true DE1033340B (en) 1958-07-03

Family

ID=7482751

Family Applications (1)

Application Number Title Priority Date Filing Date
DES37946A Pending DE1033340B (en) 1954-03-03 1954-03-03 Tension grid for electrical discharge vessels

Country Status (1)

Country Link
DE (1) DE1033340B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009033878A1 (en) * 2007-09-06 2009-03-19 Komet Group Gmbh Drilling tool for machine tools and method for the production thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451360A (en) * 1947-01-24 1948-10-12 Machlett Lab Inc Method of making grids
US2567415A (en) * 1948-09-30 1951-09-11 Bell Telephone Labor Inc Grid assembly and method of fabrication
US2610397A (en) * 1947-01-29 1952-09-16 Alton C Sutton Asparagus picker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451360A (en) * 1947-01-24 1948-10-12 Machlett Lab Inc Method of making grids
US2610397A (en) * 1947-01-29 1952-09-16 Alton C Sutton Asparagus picker
US2567415A (en) * 1948-09-30 1951-09-11 Bell Telephone Labor Inc Grid assembly and method of fabrication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009033878A1 (en) * 2007-09-06 2009-03-19 Komet Group Gmbh Drilling tool for machine tools and method for the production thereof

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