US2455602A - Mercury-vapor electric converter - Google Patents

Mercury-vapor electric converter Download PDF

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Publication number
US2455602A
US2455602A US10325A US1032548A US2455602A US 2455602 A US2455602 A US 2455602A US 10325 A US10325 A US 10325A US 1032548 A US1032548 A US 1032548A US 2455602 A US2455602 A US 2455602A
Authority
US
United States
Prior art keywords
converter
reservoir
rectifier
gas
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 - Lifetime
Application number
US10325A
Other languages
English (en)
Inventor
Neirynck Roger
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.)
Umicore NV SA
Original Assignee
ACEC SA
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 ACEC SA filed Critical ACEC SA
Application granted granted Critical
Publication of US2455602A publication Critical patent/US2455602A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01J13/28—Selection of substances for gas filling; Means for obtaining the desired pressure within the tube
    • 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
    • H01J2893/0086—Gas fill; Maintaining or maintaining desired pressure; Producing, introducing or replenishing gas or vapour during operation of the tube; Getters; Gas cleaning; Electrode cleaning

Definitions

  • the present invention relates to improvements conduit leading such gases to the rectifier, inac in mercuryvapor electric converters particularly cordance with the molecular flowing laws of gases in the means and methodi'orwemoving excess at very low pressures... u i
  • FIG. 1 illustrates schematically one form of the higher chargethan that for whichit has been invention and, i
  • a high vacuum mercury por P p is the period of v rch r ng ,1 i quite disadconnected at its suctionside to the tank I by the vantageous in that the reaction will be present CI1d11it 3 and at its pressure S 50 a reservoir for a considerableperiody'lfhis is because dur- 4 by a conduit 5.
  • a conduit I P v ed with a ing overcharge the recombination processes of valve 8 connects the reservoir 4 to the tank I of the gases withcertain internal elements of the the converter.
  • a further object of the invention is to provide take place before the converter return-s to normal a separate reservoir into which excess gas may operation.
  • a still further object of the invention is to closely with the pressure of the gases liberated provide means in such separate reservoir whereby in the converter enclosure.
  • the gases pumped therein may be wholly or par-
  • this control factor may be: tially fixed, i a.
  • the interior pressure of the tank of the A still furtherobject of the invention is to converter wherein the pressure is measured by provide means whereby the return of the excess a vacuum meter of the Wheatstone bridge type. gases from the reservoir to the rectifier may be or aPirani gauge.
  • a still further object of the invention is to procircuit. vide means whereby the return of excess gases 0.
  • the elevation of the temperature reached in from the reservoir to the rectifier is controlled service by a determined point on the metallic tank by suitable length and cross-sectional area of the be and this elevation in temperature may be meas- Knudsen formula:
  • thermocouple 3 ured by a thermocouple and the point chosen on the tank may be located in a zone adjacent the arc, for example in the-bottom of the tank.
  • V Fig. 2 of the drawing A modified form of the invention is shown in V Fig. 2 of the drawing in which the conduit I and Q is the estimated flow by multiplying the pressure in a given section by. the volume of gas traversing :such'section in one second.
  • P1 and P2 are the pressuresiatthe two ends of the conduit.
  • J 1 is the'flovv resistance obtained from.
  • a L is the length of the conduit
  • products may beplaced in the intermediary reservoir 4 which .willfix the gases either whol y .or partly.
  • Products of this type may be: bases for acid gases, sulphuric acid, or phosphorous pentoxide for water vapor.
  • the reaction products of alkaline metals with harmful gases 4 under the action of an electric discharge may be used.
  • A' mercury vapor 'jeonverter comprising a rectifier, a reservoir for excess gas, a high vacuum pump interposed between said rectifier and said reservoir for withdrawing excess as from said rectifier and forcing said gas into said reservoir 7 and-means for returning said gas from said reservoirgto saidrectifier operable during periods of normal operation of said rectifier.
  • a mercury vapor converter comprising a rectifier, a reservoir for excess gas, a high vacuum pump, interposed between said rectifier and said reservoir for withdrawing excess gas from said rectifier and forcin said gas into said reservoir,
  • A-method of operating a-mercury vapor electric converter com-prising reducing the vapor density of the mercury, vapor during overcharging periods by withdrawing excess gas from. the converter and storing said excess gas in an auxilia-ry reservoir fixing a plition of said excess gas within said reservoir and then returning said excess-848 from saidreservoir-to said converter during normal periods of operation of said converter.

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  • Treating Waste Gases (AREA)
US10325A 1943-03-29 1948-02-24 Mercury-vapor electric converter Expired - Lifetime US2455602A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR981280T 1943-03-29

Publications (1)

Publication Number Publication Date
US2455602A true US2455602A (en) 1948-12-07

Family

ID=9531479

Family Applications (1)

Application Number Title Priority Date Filing Date
US10325A Expired - Lifetime US2455602A (en) 1943-03-29 1948-02-24 Mercury-vapor electric converter

Country Status (4)

Country Link
US (1) US2455602A (fr)
CH (1) CH242239A (fr)
DE (1) DE866822C (fr)
FR (1) FR981280A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454827A (en) * 1967-06-16 1969-07-08 United Aircraft Corp Current control for a cold cathode

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454827A (en) * 1967-06-16 1969-07-08 United Aircraft Corp Current control for a cold cathode

Also Published As

Publication number Publication date
CH242239A (fr) 1946-04-30
FR981280A (fr) 1951-05-24
DE866822C (de) 1953-02-12

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