US2259293A - Vapor electric system - Google Patents

Vapor electric system Download PDF

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Publication number
US2259293A
US2259293A US349656A US34965640A US2259293A US 2259293 A US2259293 A US 2259293A US 349656 A US349656 A US 349656A US 34965640 A US34965640 A US 34965640A US 2259293 A US2259293 A US 2259293A
Authority
US
United States
Prior art keywords
transformer
make
current
alive
anode
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
US349656A
Other languages
English (en)
Inventor
Joseph H Cox
Henry C Myers
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric 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
Priority to BE442276D priority Critical patent/BE442276A/xx
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US349656A priority patent/US2259293A/en
Priority to GB9385/41A priority patent/GB550872A/en
Priority to DES4746D priority patent/DE945109C/de
Priority to FR875708D priority patent/FR875708A/fr
Application granted granted Critical
Publication of US2259293A publication Critical patent/US2259293A/en
Priority to CH252907D priority patent/CH252907A/fr
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
    • H01J13/48—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/02—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/02—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters
    • H02M1/04—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters for tubes with grid control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/15—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using discharge tubes only
    • 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
    • H01J2893/0087—Igniting means; Cathode spot maintaining or extinguishing means

Definitions

  • Our invention relates to a vapor-electric device, and particularly to a control system for a vapor-electric converter of the make-alive type.
  • an altematlng-current circuit I is connected to a direct-current circuit 2 by means of a suitable connecting transformer 3.
  • the secondary phase terminals of the connecting transformer 3 are connected to suitable electric valves 4 of the make-alive type for con-.
  • Each of the make-alive type valves 4 comprises a suitable container 5, preferably of metal, which can be evacuated, a vaporizable reconstructing cathode of suitable. material, such as mercury, contained in the bottom of the container, 9. main anode] spaced from and insulated from the cathode B, an anode grid 8 preferably of conducting material, such as graphite, in closely spaced relation to the main former ill, the phase terminals ll of which are connected through suitable impedances l2 and' it to the make-alive electrode 9, and the fiow of current to the make-alive electrod js controlled by a suitable auxiliary rectifier or firing tube H, preferably of the grid controlled type.
  • a suitable auxiliary rectifier or firing tube H preferably of the grid controlled type.
  • suitable energy-storing devices such as capacitors l5 are connected in parallelwith the phase windings [6 of the control transformer ill.
  • the charging current of the capacitors I5 is controlled by suitable impedances [2, which may be either resistors or reactors, or a combinationof both.
  • the discharging current characteristic of the capacitors I5 is controlled by means of a suitable impedance l3, preferably of considerable less ohmic value than the impedance l2 between the phase terminal H and the capacitor II, so that the capacitor I5 is charged over a considerable interval of time, but the capacitor I8 is discharged in a much shorter interval of time to produce a peaked impulse for application to the make-alive electrode 9.
  • control transformer I0 is connecte in a phase relation advanced to the phase relation of the main transformer 3, so that the potential of the phase windings ill of the control transformer I0 is at its peak "value at the instant of starting the "cathode spoti'n, the make-alive typevalve l.
  • The. firing tubes are controlled by a suitable firing transformer 2ll the phase position of which may be controlled by any suitable means, such as the rotary phase shifter 2
  • the'firing instant can be changed at will with respect to the. phase position of the main transformer 3.
  • auxiliary source of excitation potential herein illustrated as an auxiliary transformer "25, although obviously any suitable source of anode 1, and a make-alive electrode 8 in permanent contact with the vaporizable cathode I.
  • the make-alive electrode 9 is periodically supplied with energy to initiate a cathode spot for initiating a main current-carrying are between the anod 1 and the cathode 6.
  • the current impulses. to the make-alive electrode 8 are supplied by a suitable control transpotential can be utilized.
  • This auxiliary poten tial is connected to the anode shield 8 so that it forms an exciting, electrode adjacent to theanode I and brings the ionization into the vicinity of or in contact with the anode I, thus insuring ready pick-up of the main 'current-ca'rrying arc.
  • the phase relation of the. exciting transformer 25 is substantially in phase carrying are between the main anode? and cathode 6.
  • the amount of current transferred can be controlled by the phase shifter 21 in series with the firing transformer 20.
  • the exciting transformer 25 supplies exciting current to the anode shields B which act as exciting electrodes, to ionize the arc space and insure ready pick-up of'the main current-carrying arc in the make-alive type valves 4.
  • Fig. 2 The modification according to Fig. 2 is substan tially identical so far as the main current and igniting circuits are concerned, but the auxiliaryv transformer or exciting transformer 25 has been dispensed with, and arsuitable mid-tap 80 provided in each of the phase windings i6 inthe ,control transformer ill for supplying exciting current to the anode shields B which act as excit-' ing electrodes.
  • trol transformer for supplying control potential to the'make-alive electrode, means for periodically applying current impulses from said control transformer to said make-alive electrode for initiating a cathode spot in said make-alive valve
  • An electric current conversion system comprising a plurality of make-alive type valves, each valve including an anode,a cathode, a make-alive electrode in contact with the cathode, and an anode shield about the anode, "a controlling transformer having a plurality of phase windings vconforming in number to the make-alive electrodes to be excited, at firing tube connected in series between each of said phaseowindings and said make-alive electrodes, means for determining the conductivity of said firing tubes, an in-' terinediate tap in each of said phase windings and connections for impressing the potential of 'said intermediate tap on said anode shield for ionizing the arc, space between the anode and cathode.
  • a control system for a vapor-electric valve i A of the make-alive type comprising a valve having a pair of cooperating main electrodes. aunakealive electrode in contact with one of said main. electrodes, a shield substantially enclosing the other main electrode, a control transformer, con-' nections for impressing the potential of said control transformer across the make alive electrode and the main eigctrodein contact therewith,

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Generation Of Surge Voltage And Current (AREA)
US349656A 1940-08-02 1940-08-02 Vapor electric system Expired - Lifetime US2259293A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE442276D BE442276A (enrdf_load_stackoverflow) 1940-08-02
US349656A US2259293A (en) 1940-08-02 1940-08-02 Vapor electric system
GB9385/41A GB550872A (en) 1940-08-02 1941-07-24 Improvements in or relating to a control system for vapour electric discharge devices
DES4746D DE945109C (de) 1940-08-02 1941-07-31 Schaltanordnung fuer Gas- oder Dampfentladungsgefaesse mit Initialzuendung
FR875708D FR875708A (fr) 1940-08-02 1941-10-02 Dispositif à vaporisation électrique
CH252907D CH252907A (fr) 1940-08-02 1946-01-30 Installation de commande pour un dispositif électrique à vapeurs.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US349656A US2259293A (en) 1940-08-02 1940-08-02 Vapor electric system

Publications (1)

Publication Number Publication Date
US2259293A true US2259293A (en) 1941-10-14

Family

ID=23373394

Family Applications (1)

Application Number Title Priority Date Filing Date
US349656A Expired - Lifetime US2259293A (en) 1940-08-02 1940-08-02 Vapor electric system

Country Status (6)

Country Link
US (1) US2259293A (enrdf_load_stackoverflow)
BE (1) BE442276A (enrdf_load_stackoverflow)
CH (1) CH252907A (enrdf_load_stackoverflow)
DE (1) DE945109C (enrdf_load_stackoverflow)
FR (1) FR875708A (enrdf_load_stackoverflow)
GB (1) GB550872A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427738A (en) * 1940-07-12 1947-09-23 Westinghouse Electric Corp Vapor-electric device
US2507870A (en) * 1946-04-10 1950-05-16 Yuba Mfg Company Electric motor control system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE656986C (de) * 1938-02-19 Siemens Schuckertwerke Akt Ges Stromrichter mit verdampfbarer Kathode
GB405857A (en) * 1932-09-14 1934-02-15 English Electric Co Ltd Igniting device for metal vapour rectifiers, particularly dipping igniting device for glass-bulb rectifiers
DE678921C (de) * 1933-09-07 1939-07-25 Siemens Schuckertwerke Akt Ges Elektrischer Gas- oder Dampfentladungsapparat
US2190774A (en) * 1937-06-16 1940-02-20 Gen Electric Electric valve circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427738A (en) * 1940-07-12 1947-09-23 Westinghouse Electric Corp Vapor-electric device
US2507870A (en) * 1946-04-10 1950-05-16 Yuba Mfg Company Electric motor control system

Also Published As

Publication number Publication date
GB550872A (en) 1943-01-28
DE945109C (de) 1956-06-28
FR875708A (fr) 1942-10-01
BE442276A (enrdf_load_stackoverflow)
CH252907A (fr) 1948-01-31

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