DE541780C - Water-cooled discharge tubes - Google Patents

Water-cooled discharge tubes

Info

Publication number
DE541780C
DE541780C DET37828D DET0037828D DE541780C DE 541780 C DE541780 C DE 541780C DE T37828 D DET37828 D DE T37828D DE T0037828 D DET0037828 D DE T0037828D DE 541780 C DE541780 C DE 541780C
Authority
DE
Germany
Prior art keywords
water
anode
cooled discharge
discharge tubes
cooled
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
Application number
DET37828D
Other languages
German (de)
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.)
Telefunken AG
Original Assignee
Telefunken AG
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 Telefunken AG filed Critical Telefunken AG
Priority to DET37828D priority Critical patent/DE541780C/en
Application granted granted Critical
Publication of DE541780C publication Critical patent/DE541780C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/32—Anodes
    • H01J19/36—Cooling of anodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0027—Mitigation of temperature effects

Description

Wassergekühlte Entladungsröhre Es ist bei wassergekühlten Entladungsröhren beobachtet worden, daß die Kühlung unwirksam wird, wenn die Belastungsdichte, d. h. die Energiebelastung pro Flächeneinheit der Anode, ein gewisses Maß überschreitet, und daß dann lokale Überhitzungen auf der Anode eintreten. Zurückzuführen ist diese Erscheinung wohl darauf, daß infolge des mehr oder minder lamellaren Störungscharakters der Kühlflüssigkeit längs der Anode die berührenden Grenzschichten langsam fortgeführt werden und bei stärkerer Erwärmung der Anode an derselben sich isolierende Dampfblasen ausbilden können. Um eine derartige Ausbildung von Dampfblasen zu verhüten, hat man sich bisher, wie bekannt, in der Weise zu helfen gesucht, daß man das Wasser mit großer Geschwindigkeit an der zu kühlenden Anodenfläche entlangströmen ließ, wobei gegebenenfalls durch Anwendung eines sehr engen Kühlmantels an der Anode ein schnelles Vorbeiströmen der Kühlflüssigkeit und Mitreißen der Dampfblasen erzielt wurde. Der Kühlmantel wurde mit Ausbuchtungen versehen, die ihn in geeignetem Abstand von dem Anodenkörper hielten.Water-cooled discharge tube It is with water-cooled discharge tubes it has been observed that the cooling becomes ineffective when the load density, i.e. H. the energy load per unit area of the anode exceeds a certain level, and that local overheating then occurs on the anode. This is to be traced back Appearance probably due to the more or less lamellar disturbance character of the cooling liquid along the anode, the contacting boundary layers are slowly continued and when the anode is heated to a greater extent, vapor bubbles isolate themselves on the same can train. In order to prevent such a formation of vapor bubbles, has hitherto, as is well known, one has sought to help oneself in such a way that one has the water allowed to flow along the anode surface to be cooled at high speed, optionally by using a very narrow cooling jacket on the anode achieved rapid flow of the cooling liquid and entrainment of the vapor bubbles became. The cooling jacket has bulges that keep it at a suitable distance held by the anode body.

Vorliegender Erfindung gemäß werden auf der von der Kühlflüssigkeit umspülten Seite des Anodenkörpers rippenartige oder in Schraubenlinien verlaufende, das Auftreten lamellarer Flüssigkeitsströmungen störende Profile vorgesehen. Derartige wirbelbildende, rippenartig angebrachte Profile sind vorzugsweise in einem Abstandvon einigen Millimetern voneinander und einigenMillimeternHöhe undBreite an demmeist zylindrischen Anodenmantel vorgesehen. Gute Resultate sind auch erhalten worden durch Auflöten von 115 mm Kupferdraht in einer Schraubenlinie von etwa 3 bis 5 mm Ganghöhe an den Anodenzylinder. Es ist zweckmäßig, für guten Wärmekontakt der Rippen oder des Drahtes mit der Anode Sorge zu tragen, um dadurch zugleich eine Vergrößerung der zu kühlenden Oberfläche zu erhalten. Aus dem letztgenannten Grunde empfiehlt es sich, an Stelle äußerlich anzubringender Rippen die Anode in geeigneter Weise auszufräsen.According to the present invention, rib-like or helical profiles which interfere with the occurrence of lamellar liquid flows are provided on the side of the anode body around which the cooling liquid flows. Such vortex-forming, rib-like attached profiles are preferably provided at a distance of a few millimeters from one another and a few millimeters in height and width on the mostly cylindrical anode jacket. Good results have also been obtained by soldering 115 mm copper wire in a helix of about 3 to 5 mm pitch to the anode cylinder. It is advisable to ensure good thermal contact between the ribs or the wire and the anode in order to increase the surface area to be cooled. For the latter reason, it is advisable to mill out the anode in a suitable manner instead of ribs to be attached externally.

Claims (2)

PATENTANSPRÜCHE: i. Wassergekühlte Entladungsröhre mit einer einenTeil derAußenwandung der Röhre bildenden Anode, dadurch gekennzeichnet, daß auf dervon der Kühlflüssigkeit umspülten Seite des Anodenkörpers rippenartige oder in Schraubenlinien verlaufende, das Auftreten lamellarer Flüssigkeitsströmungen störende Profile vorgesehen sind. PATENT CLAIMS: i. Water-cooled discharge tube with one part the anode forming the outer wall of the tube, characterized in that on the von the side of the anode body that is flushed around the coolant is rib-like or in helical lines running, the occurrence of lamellar liquid flows disruptive profiles provided are. 2. Wassergekühlte Entladungsröhre nach Anspruch i, dadurch gekennzeichnet, daß die Profile durch den ausgefrästen Anodenkörper selbst gebildet werden.2. Water-cooled discharge tube according to claim i, characterized in that that the profiles are formed by the milled anode body itself.
DET37828D 1929-11-08 1929-11-08 Water-cooled discharge tubes Expired DE541780C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET37828D DE541780C (en) 1929-11-08 1929-11-08 Water-cooled discharge tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET37828D DE541780C (en) 1929-11-08 1929-11-08 Water-cooled discharge tubes

Publications (1)

Publication Number Publication Date
DE541780C true DE541780C (en) 1932-01-15

Family

ID=7560047

Family Applications (1)

Application Number Title Priority Date Filing Date
DET37828D Expired DE541780C (en) 1929-11-08 1929-11-08 Water-cooled discharge tubes

Country Status (1)

Country Link
DE (1) DE541780C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1014669B (en) * 1955-02-07 1957-08-29 Telefunken Gmbh External anode for an electrical discharge tube, which is cooled by a flowing coolant
DE1062825B (en) * 1951-12-04 1959-08-06 Thomson Houston Comp Francaise Device for the boiling cooling of electron tubes with outer anode
DE1069788B (en) * 1959-11-26
DE974683C (en) * 1950-11-30 1961-03-30 Thomson Houston Comp Francaise Device for the boiling cooling of an electron tube with an outer anode
DE1217511B (en) * 1958-11-25 1966-05-26 Commissariat Energie Atomique Device for increasing the heat transfer number between a flow medium and a nuclear reactor fuel assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069788B (en) * 1959-11-26
DE974683C (en) * 1950-11-30 1961-03-30 Thomson Houston Comp Francaise Device for the boiling cooling of an electron tube with an outer anode
DE1062825B (en) * 1951-12-04 1959-08-06 Thomson Houston Comp Francaise Device for the boiling cooling of electron tubes with outer anode
DE1014669B (en) * 1955-02-07 1957-08-29 Telefunken Gmbh External anode for an electrical discharge tube, which is cooled by a flowing coolant
DE1217511B (en) * 1958-11-25 1966-05-26 Commissariat Energie Atomique Device for increasing the heat transfer number between a flow medium and a nuclear reactor fuel assembly

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