US3377496A - Gas filled envelope for a spark gap or the like - Google Patents

Gas filled envelope for a spark gap or the like Download PDF

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Publication number
US3377496A
US3377496A US56327766A US3377496A US 3377496 A US3377496 A US 3377496A US 56327766 A US56327766 A US 56327766A US 3377496 A US3377496 A US 3377496A
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US
United States
Prior art keywords
gas
envelope
tube
electrode
passage
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
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English (en)
Inventor
Fruengel Frank
Roeder Gert
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.)
Impulsphysik GmbH
Original Assignee
Impulsphysik GmbH
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 Impulsphysik GmbH filed Critical Impulsphysik GmbH
Application granted granted Critical
Publication of US3377496A publication Critical patent/US3377496A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H01J5/14—Dismountable vessels or containers, e.g. for replacing cathode heater
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J61/28—Means for producing, introducing, or replenishing gas or vapour during operation of the lamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/90—Lamps suitable only for intermittent operation, e.g. flash lamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/395—Filling vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/50—Repairing or regenerating used or defective discharge tubes or lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0059—Arc discharge tubes
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]

Definitions

  • the present invention relates to a gas filled envelope for spark gaps, high pressure flash lamps and the like.
  • Gas filled envelopes or glass bulbs in which a spark discharge at high energy takes place are used up in a relatively short time since the glass bulb becomes blackened at the inside and cannot be cleaned without detrimentally affecting the gas filling. It is therefore customary to discard such gas filled envelopes including the electrode system incorporated therein after the glass bulb has blackened.
  • the gas filled envelope according to the present invention for spark gaps and the like mainly comprises a filling tube gas-tightly connected to the envelope and communicating at one end thereof with the interior of the envelope.
  • the tube has a portion projecting outwardly of the envelope and an outer free end and closure means are arranged at the free end of the filling tube movable between a first position gas tightly closing the free end of the tube and a second position permitting passage of gas through the tube.
  • .Fitting means are removably and gas tightly fitted over the aforementioned outwardly projecting portion of the filling tube, the fitting means defining an enclosed spacewhich communicates with the interior of the tube when the closure means is in the open position, and operating means having an engaging portion in the enclosed space of the fitting means and adapted to be brought into engagement with the closure means and an operating portion extending gas tightly sealed from the aforementioned space to the outside of the fitting means are arranged so as to be operable for moving said engaging means into engagement with the closure means and to move the latter between the positions thereof.
  • passage means are provided which communicate at one end thereof with the enclosed space and which are adapted to be connected at the other end thereof to apparatus for causing flow of gas through the passage means into and out of the space, and at least one shut-off valve is arranged in the aforementioned passage means for opening and closing the latter.
  • the closure means is preferably in the form of a screw plug which can be threaded into and out of an inner screw thread provided in the outer end of the filling tube and in this case the operating means is preferably in the form of a screwdriver coaxially arranged with the screw plug.
  • the apparatus mainly comprises a gas filled envelope 1 which may for instance be in the form of a spherical bulb formed for instance from quartz glass which is provided with a pair of axially aligned and oppositely arranged spaced electrodes 2 and 3 which extend gas tightly sealed through opposite tubular extensions 5 of the bulb 1.
  • a gas filled envelope 1 which may for instance be in the form of a spherical bulb formed for instance from quartz glass which is provided with a pair of axially aligned and oppositely arranged spaced electrodes 2 and 3 which extend gas tightly sealed through opposite tubular extensions 5 of the bulb 1.
  • a pair of sleeves 4 are arranged about the tubular extensions 5 and connected with inner portions thereof to outer flanges of the tubular extensions 5 in any convenient manner, whereas outer portions of the sleeves 4 are provided with an inner screw thread into which centrally bored plugs 6, provided with an outer screw thread, are respectively threadedly engaged so as to press O-rings 7 of resilient material against the end faces of the tubular extension 5 and against the outer cylindrical surface portions of the electrodes 2 and 3, respectively.
  • the screw plugs 6 are tightened and the O-rings 7 compressed, a gas tight seal is provided preventing escape of gas under pressure from the interior of the envelope 1 to the outside thereof.
  • One of the electrodes for instance the electrode 3, is provided with an axial bore 8 ending short of the inner end of the electrode and a transverse bore 9 communicates with the inner end of the axial bore 8 to thus provide communication between the axial bore 8 and the interior of the envelope 1.
  • the electrode 3 thus provided with the bores 8 and 9 constitutes therefore a filling tube through which gas may be filled into the interior of the envelope 1 and be evacuated therefrom.
  • the outer, or left end, as viewed in the drawing, of the electrode 3 is provided with a bore portion having a larger diameter than the remainder of the bore so as to form at the junction of the large diameter portion and the remainder of the bore a shoulder, and the large diameter portion of the bore is provided with an inner screw thread 13 into which a screw plug 10 is screwed provided at its outer, or left end with a screw slot 11.
  • the opposite end of the screw, plug is provided with a small diameter projection 12 which fits into the axial bore of the electrode 3 and around which an annular gasket 13 is located so that the gasket 13 is pressed against the aforementioned shoulder when the screw plug 10 is tightly screwed into the threaded bore end portion of the electrode 3.
  • the screw plug 10 forms therefore closure means movable between a first position for closing the passage through the electrode or filling tube 3 and a second position, that is screwed out of the threaded end of the electrode 3, for permitting passage of gas through the electrode.
  • the arrangement includes further fitting means 14 in form of a preferably cylindrical member formed with an axial bore 15 extending from one end in the cylindrical member and having an inner diameter substantially equal to the outer diameter of the electrode 3 so that the outer end of the electrode 3 may be pushed into the cylindrical bore 15 of the filling means 14.
  • the right end, as viewed in the drawing, of the cylindrical member 14 is provided with an enlarged bore portion formed with an inner screw thread into which an axially bored screw plug 16 is threadingly engaged so that an O-ring 17 located between the inner end of the screw plug 16 and the corresponding shoulder in the member 14 may be compressed and so that the inner surface of the O-ring 17 is pressed tightly against the outer surface of the electrode 3 located in the bore 15 to provide a fluid tight seal 3 between the bore and the outer surface of the electrode 3.
  • the bore 15 defines therefore in the member 14 an inner space which is gas tightly sealed from the outer atmosphere.
  • the arrangement includes also operating means in the form of a screwdriver 18 having an engaging portion 18' in form of a screwdriver blade in the enclosed space defined by the bore 15 and an operating portion extending gas tightly sealed from the space to the outside of the fitting means and provided at the outer end with a handle portion, which may be spherical.
  • the stem of the screwdriver which connects the handle portion 21 with the screwdriver blade 18 extendsthrough a central bore of a screw plug 19 screwed into a correspondingly threaded enlarged bore portion formed in the left end, as viewed in the drawing, of the member 14 and an O-ring 20 located about the stem and between the inner end of the screw plug 14 and a corresponding shoulder on the member 14 serves, when compressed, to provide a fluid tight seal about the stem of the screwdriver 18.
  • This seal provided by the O-ring 20 is compressed in such a manner so as to permit axial movement of the operating means or screwdriver 18 and turning of the latter about its axis.
  • At least one, but as shown in the drawing, preferably two passage means 22 and 23 are provided which communicate with the inner end thereof with the bore 15 to the left, as viewed in the drawing, of the screw plug 10 and shut-off valves 24 and 25 of known construction cooperate respectively with the passage means 22 and 23 for opening and closing the latter.
  • the valves 24 and 25 are respectively connected to a source of gas under pressure and to a vacuum pump, not shown in the drawing.
  • the fitting means 14 and the elements associated therewith are removed from the electrode 3 and the plug 10 is tightly screwed into the left end, as viewed in the drawing, of the electrode 3 so as to gas tightly close the passage 8 formed therethrough.
  • the electrodes 2 and 3 are then connected in known manner to a source of electrical energy. If after extended use of this arrangement the interior of the gas bulb becomes blackened, the electrodes 2 and 3 are disconnected from the source of electrical energy, the screw plugs 6 are unscrewed from the sleeves 4 so that the electrodes may be removed and the interior of the glass bulb 1 may be cleaned through the thus formed openings.
  • the electrodes 2 and r 3 are inserted again, the screw plugs 6 are tightened so that the electrodes are again gas tightly connected to the glass bulb 1.
  • the fitting means 14 is then placed over the left. end, as viewed in the drawing, of the electrode 3, the screw plug 16 is tightened sothat the fitting means are gas tightly connected to the outer end of the electrode 3.
  • the operating means or the screwdriver 18 are then operated, that is moved inwardly so that the screwdriver blade 18' engages in the screw slot 11 of the plug 10 and then the screwdriver is turned to unscrew the plug 10 from the thread provided in the outer end of the electr'ode, whereby the plug 10 is withdrawn into the bore 15.
  • one of the valves 24 or 25, that is the valve which is connected to the vacuum pump is opened so that theinterior of the envelope may be evacuated, and after the evacuation is completed the valve in the line between the vacuum pump and the bore1'5 is closed and the other valve connected to a source of gas under pressure is opened so that such gas will enter into the Y bore 15 and pass through the passage 8,9 in the electrode 3 into the interior of the evacuated envelope 1.
  • the gas used for filling the interior of the envelope 1 is preferably a rare or inert gas, for instance krypton with an addition of helium.
  • the pressure at which the envelope is filled with gas will depend and is adjusted according to the desired st'z'e of the spark to be formed between the spaced ends of the electrodes.
  • the other valve is also closed and the screw plug 10 is again screwed into the threaded end portion of the electrode 3 by means of the screwdriver 18 to provide a gas tight seal at the outer end of the electrode 3.
  • the fitting means 14 is removed from the outer end of the electrode 3.
  • the electrode '3 provided with the bores 8 and 9 is used as a filling tube
  • the outer end of the filling tube is provided with a closure means as described above and the fitting means 14 is placed onto the outer end of this separate filling tube.
  • the separate filling tube may be of considerable length and at least a portion thereof may be in the form of a flexible hose.
  • the other electrode is preferably also formed with a closable bore so that instead of first evacuating the interior of the electrode, a rare gas under pressure may be fed from a source of gas under pressure through the open shut-off valve and through the bored electrode 3 into the interior of the envelope 1 to displace any air therein which passes out through the bore in the other electrode until the interior of the envelope is completely filled with rare gas after which the bores in both electrodes are closed again.
  • a filling tube gas tightly connected to said envelope and communicating at one end thereof with the interior of said envelope, said tube having a portion projecting outwardly of said envelope and having a free end; closure means at said free end of said filling tube, said closure means being movable between a first position gas tightly closing said free'end of said tube and a second position permitting passage of gas through said tube; fitting means removably and gas tightly fitted over said portion of said filling tube, said fitting means defining an enclosed space communicating with the interior of said tube when said closure means is in said open position; operating means having an engaging portion in said enclosed space adapted to be brought into engagement with said closure means, and an operating portion extending.
  • said closure means comprising a plug located in said first position at least partly in said free end of said tube and being in said second position withdrawn into said enclosed space.
  • said filling tube has at said free end thereof a portion having a larger inner diameter than the remainder of said tube so as to form a shoulder at the junction of said portion and the remainder of said tube, said portion of larger inner diameter being internally threaded, and including a gasket at the end of said screw plug facing said shoulder, said gasket engaging said shoulder when said screw plug is in said first position.
  • said enclosed space in said fitting means is at least partly defined by a cylindrical surface aligned along said common axis and having a diameter only slightly larger than that of said screw plug to substantially prevent the latter from tilting when said screw plug is unscrewed from said end of said filling tube and withdrawn into said enclosed space.
  • passage means includes two separate passages, and a shut-off valve in each of said passages.
  • said filling tube is in the form of an electrode formed with an axial bore communicating at the inner end of said electrode with the interior of said envelope.
  • a gas filled envelope as set forth in claim 1 and including a pair of electrodes extending gas tightly sealed into said envelope, one of said electrodes being formed with an axial bore communicating at the inner end thereof with the interior of said envelope, said one electrode constituting said filling tube.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
US56327766 1965-07-06 1966-07-06 Gas filled envelope for a spark gap or the like Expired - Lifetime US3377496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ28545A DE1226712B (de) 1965-07-06 1965-07-06 Gasgefuelltes Entladungsgefaess fuer Messfunken-strecken, Hochdruck-Blitzlampen und aehnliche Entladungsstrecken

Publications (1)

Publication Number Publication Date
US3377496A true US3377496A (en) 1968-04-09

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ID=7203315

Family Applications (1)

Application Number Title Priority Date Filing Date
US56327766 Expired - Lifetime US3377496A (en) 1965-07-06 1966-07-06 Gas filled envelope for a spark gap or the like

Country Status (5)

Country Link
US (1) US3377496A (enrdf_load_stackoverflow)
CH (1) CH459754A (enrdf_load_stackoverflow)
DE (1) DE1226712B (enrdf_load_stackoverflow)
GB (1) GB1111469A (enrdf_load_stackoverflow)
NL (1) NL6608914A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529208A (en) * 1966-08-26 1970-09-15 Frank Frungel Discharge lamp arrangement for lighting purposes
US3530328A (en) * 1968-05-27 1970-09-22 James A Henschel Lock nozzled electrode
WO2002078049A3 (en) * 2001-03-23 2002-11-21 Wafermasters Inc Multi-spectral uniform light source
US20050094345A1 (en) * 2003-10-29 2005-05-05 Michael Pollock Discharge device for inductive devices
CN114188197A (zh) * 2021-12-09 2022-03-15 首固光电江苏有限公司 一种紫外线灯起始气体及其填充工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1616214A (en) * 1922-05-05 1927-02-01 John L Brown Vacuum tube
US2703374A (en) * 1951-01-15 1955-03-01 Fruengel Frank Stroboscopic light source
US3256383A (en) * 1963-06-07 1966-06-14 Sasorov Vasily Pavlovich High pressure gaseous discharge lamp and gas seal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE856995C (de) * 1950-02-10 1952-11-27 Frank Dr-Ing Fruengel Entladungsgefaess, insbesondere fuer Lichtblitz-Stroboskope

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1616214A (en) * 1922-05-05 1927-02-01 John L Brown Vacuum tube
US2703374A (en) * 1951-01-15 1955-03-01 Fruengel Frank Stroboscopic light source
US3256383A (en) * 1963-06-07 1966-06-14 Sasorov Vasily Pavlovich High pressure gaseous discharge lamp and gas seal

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529208A (en) * 1966-08-26 1970-09-15 Frank Frungel Discharge lamp arrangement for lighting purposes
US3530328A (en) * 1968-05-27 1970-09-22 James A Henschel Lock nozzled electrode
WO2002078049A3 (en) * 2001-03-23 2002-11-21 Wafermasters Inc Multi-spectral uniform light source
US7063583B2 (en) 2001-03-23 2006-06-20 Wafermasters, Inc. Multi-spectral uniform light source
US20050094345A1 (en) * 2003-10-29 2005-05-05 Michael Pollock Discharge device for inductive devices
WO2005046018A1 (en) * 2003-10-29 2005-05-19 Edw.C. Levy Co. Discharge device for inductive devices
US7245471B2 (en) 2003-10-29 2007-07-17 Edw. C. Levy Co. Discharge device for inductive devices
CN114188197A (zh) * 2021-12-09 2022-03-15 首固光电江苏有限公司 一种紫外线灯起始气体及其填充工艺

Also Published As

Publication number Publication date
GB1111469A (en) 1968-04-24
CH459754A (de) 1968-07-15
DE1226712B (de) 1966-10-13
NL6608914A (enrdf_load_stackoverflow) 1967-01-09

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