DE920925C - Device for cooling the cathode of discharge vessels with a liquid cathode during operation - Google Patents
Device for cooling the cathode of discharge vessels with a liquid cathode during operationInfo
- Publication number
- DE920925C DE920925C DEL7938A DEL0007938A DE920925C DE 920925 C DE920925 C DE 920925C DE L7938 A DEL7938 A DE L7938A DE L0007938 A DEL0007938 A DE L0007938A DE 920925 C DE920925 C DE 920925C
- Authority
- DE
- Germany
- Prior art keywords
- cathode
- cooling
- during operation
- discharge vessels
- mercury
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J13/00—Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
- H01J13/02—Details
- H01J13/04—Main electrodes; Auxiliary anodes
- H01J13/06—Cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J13/00—Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
- H01J13/02—Details
- H01J13/32—Cooling arrangements; Heating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0072—Disassembly or repair of discharge tubes
- H01J2893/0073—Discharge tubes with liquid poolcathodes; constructional details
- H01J2893/0074—Cathodic cups; Screens; Reflectors; Filters; Windows; Protection against mercury deposition; Returning condensed electrode material to the cathodic cup; Liquid electrode level control
- H01J2893/0075—Cathodic cups
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Description
Bei Entladungsgefäßen mit im Betrieb flüssiger Kathode, beispielsweise Quecksiliberkathode, wird ein: erheblicher Teil .der im Stromrichter entwickelten Wärme an der K ,athode frei. Die Wärme wird im wesentlichen an der .Oberfläche ödes Kathodenmaterials erzeugt und lbe@vi.rkt eine unnötig starke Verdampfung von Quecksilber, das an entsprechend groß dimensionierten Kühlflächen. des Gefäßes :gekühlt werden muß. Durch das Kathodenmetall findet aber nur eingeringer Wärmeaustausch statt, so :daß die Kühlung des Kathodenbodens durch Luft oder'Wasser nicht zur vollen Wirkung kommt.In the case of discharge vessels with a cathode that is liquid during operation, for example Mercury cathode, will be a: a significant part of that developed in the converter Free heat at the cathode. The heat becomes essentially dull at the surface Cathode material and lbe@vi.rkt an unnecessarily strong evaporation of mercury, this on correspondingly large cooling surfaces. of the vessel: to be cooled got to. However, only a small amount of heat exchange takes place through the cathode metal, so: that the cooling of the cathode bottom by air or water does not have its full effect comes.
Um eine unmittelbare Kühlung des Quecksilbers zu erreichen, ist es bereitsbekannt, Kühltaschen oder ähnliche Kühlkörper in. das Kathodenmaterial .einzubringen. Diese Kühlvorrichtungen lassen sich jedoch ,nur bei Wasserkühlung verwenden und können: nicht bis an die Oberfläche des Kathodenmaterials herangeführt werden, d -a die Eisenteile durch den Kathodenfleck angegriffen werden und eine Eisenbeblakung an den Isolierteilen bewirken, die zu einem @Gehäuse-Kathoden-Schluß führt.To achieve an immediate cooling of the mercury, it is already known to bring cooling bags or similar heat sinks into the cathode material. However, these cooling devices can only be used with water cooling and can: not be brought up to the surface of the cathode material, d -a the iron parts are attacked by the cathode spot and an iron coating cause on the insulating parts, which leads to a housing-cathode short-circuit.
Es ist also darauf zu achten, ,daß i. die, Kühlvorrichtung bis nahe an .den Kathodenspiegel heranreicht, 2. das Material der Kühlvorrichtung nicht von; dem Kathodenfleck angegriffen wird und daß 3. die Kühlvorrichtung auch für Lu.ftküh.lung geeignet ist.It is therefore important to ensure that i. the, cooler up near to .the cathode mirror, 2. the material of the cooling device not from; the cathode spot is attacked and that 3. the cooling device also for air cooling suitable is.
Gegenstand der Erfindung ist eine Vorrichtung zur Kühlung der Kathode von Entladungsgefäßen mit im Betrieb flüssiger Kathode, insbesondere von Quecksil'berdampfstromrichtern mit dem Kennzeichen, daß- in den Boden des Kathodengefäßes eine .große Zahl gut wärmeleitender Metallkörper aus hochschmelzendem Material., insbesondere aus Molybdän oder Wolfram, eingesetzt ist, deren Rauminhalt annähernd gleich oder größer als :der des Quecksilbers ist und die großflächig mit dem Kathodenmaterial und über d en Kathodenboden. mit entsprechenden, außen angebrachten Kühlkörpern in Berührung stehen.The invention relates to a device for cooling the cathode of discharge vessels with a liquid cathode during operation, in particular of mercury vapor converters with the sign that a large number in the bottom of the cathode vessel is good heat-conducting metal body made of high-melting material, in particular made of molybdenum or tungsten, the volume of which is approximately equal to or greater than : that of the mercury and the large area with the cathode material and about the cathode bottom. with corresponding, externally attached heat sinks in contact stand.
Körper aus diesen Materialien: werden nämlich vom Kathodenfleck nicht angegriffen. Sie können somit bis- au(f wenige Millimeterunter :dem Kathodenspiegel geführt werden oder, wenn eine Kathodenfleckfixierunggewünscht wind, sogar über den Spiegel hinausragen. Im letzteren Falle ist es vorteilhaft, die oberen Enden nicht scharfkantig, sondern kuppenförmig auszubilden. Die Figuren zeigen in zum Teil schematischer Darstellung Ausführungsbeispiele der Erfindung.Bodies made from these materials: namely will not be removed from the cathode spot attacked. You can thus up to (f a few millimeters below: the cathode mirror or, if cathode spot fixation is desired, even over stick out the mirror. In the latter case it is advantageous to use the upper ends not sharp-edged, but dome-shaped. The figures show in to Partly schematic representation of exemplary embodiments of the invention.
In Fig. i ist der metallische Kathodenboden i mit Bohrungen versehen; in die Rundstäbe 2 aus Mol@bdän oder Wolfram eingesetzt sind. Sie reichen bis auf einige Millimeter an die Oberfläche des Quecksilberspiegels 3 heran. An dem Kathodenboden und an .den Seitenwänden sind Kühlrippen 4 angelbrache.In FIG. I, the metallic cathode base i is provided with bores; are used in the round rods 2 made of Mol @ bdän or tungsten. They reach up to a few millimeters to the surface of the mercury level 3. On the cathode bottom and on .den side walls cooling fins 4 are anglache.
In Fig. 2 sind,die Stäbe bis über d ie Quecksilberoberfläche geführt und an ihrem oberen Ende kuppenförmig abgerundet. .In Fig. 2, the rods are guided over the mercury surface and rounded at its upper end in the shape of a dome. .
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL7938A DE920925C (en) | 1950-12-21 | 1950-12-21 | Device for cooling the cathode of discharge vessels with a liquid cathode during operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL7938A DE920925C (en) | 1950-12-21 | 1950-12-21 | Device for cooling the cathode of discharge vessels with a liquid cathode during operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE920925C true DE920925C (en) | 1954-12-02 |
Family
ID=7257298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEL7938A Expired DE920925C (en) | 1950-12-21 | 1950-12-21 | Device for cooling the cathode of discharge vessels with a liquid cathode during operation |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE920925C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1019771B (en) * | 1955-02-25 | 1957-11-21 | Licentia Gmbh | Device for cooling the cathode of discharge vessels with a liquid cathode during operation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE541300C (en) * | 1928-01-21 | 1932-01-15 | Bbc Brown Boveri & Cie | Device for fixing the cathode spot in mercury vapor rectifiers, in which an insert provided with rust-like openings is provided in the cathode container, the surface of which is completely covered by the cathode mercury |
| DE632748C (en) * | 1932-10-30 | 1936-07-13 | Siemens Schuckertwerke Akt Ges | Metal vapor rectifier, in particular large-scale mercury vapor rectifier, with an insert body provided with openings and covering the cathode fluid towards the discharge space |
| DE658838C (en) * | 1935-03-31 | 1938-04-20 | Aeg | Mercury vapor rectifier |
| CH201747A (en) * | 1936-07-08 | 1938-12-15 | Philips Nv | Anchoring body for the cathode spot of artificially cooled mercury cathode discharge tubes. |
-
1950
- 1950-12-21 DE DEL7938A patent/DE920925C/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE541300C (en) * | 1928-01-21 | 1932-01-15 | Bbc Brown Boveri & Cie | Device for fixing the cathode spot in mercury vapor rectifiers, in which an insert provided with rust-like openings is provided in the cathode container, the surface of which is completely covered by the cathode mercury |
| DE632748C (en) * | 1932-10-30 | 1936-07-13 | Siemens Schuckertwerke Akt Ges | Metal vapor rectifier, in particular large-scale mercury vapor rectifier, with an insert body provided with openings and covering the cathode fluid towards the discharge space |
| DE658838C (en) * | 1935-03-31 | 1938-04-20 | Aeg | Mercury vapor rectifier |
| CH201747A (en) * | 1936-07-08 | 1938-12-15 | Philips Nv | Anchoring body for the cathode spot of artificially cooled mercury cathode discharge tubes. |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1019771B (en) * | 1955-02-25 | 1957-11-21 | Licentia Gmbh | Device for cooling the cathode of discharge vessels with a liquid cathode during operation |
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