US3650429A - Systems for sealing enclosures - Google Patents

Systems for sealing enclosures Download PDF

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Publication number
US3650429A
US3650429A US5315A US3650429DA US3650429A US 3650429 A US3650429 A US 3650429A US 5315 A US5315 A US 5315A US 3650429D A US3650429D A US 3650429DA US 3650429 A US3650429 A US 3650429A
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US
United States
Prior art keywords
flange
tip
arrangement
plug
assembly
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
US5315A
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English (en)
Inventor
Pierre Ribout
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.)
Thales SA
Original Assignee
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Application granted granted Critical
Publication of US3650429A publication Critical patent/US3650429A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow in pipes or hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L29/00—Joints with fluid cut-off means
    • 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
    • H01J9/40—Closing vessels

Definitions

  • enclosures comprising two flanges, one of which is associated I l 25 1/ b j with the tip and a central plug associated with the other flange i 141/65 and which closes the tip.
  • Ducts are provided for connecting h b 151.285/226' the tip with the outside.
  • a joint is provided between the plug and the tip and flexible bellows interconnect the two flanges.
  • PAIENTEDMARm 1912 sum u UF 4 wvewrm flaw: Rmwr 7 1 1 SYSTEMS FOR SEALING ENCLOSURES
  • the present invention relates to vacuum tight enclosures, for example vacuum tubes.
  • an arrangement for sealing the exhaust tip of an enclosure comprising a first flange having means for a tight connection to said tip, a second flange matched to said first flange and arranged for connection to a pumping set, a plug associated with said second flange for closing said tip, said plug and said second flange thus forming an assembly, ducts extending through said assembly for connection of said tip to said pumping set, and flexible bellows connecting said assembly to said first flange.
  • FIG. I illustrates an axial section through a portion of an evacuated enclosure provided with a sealing arrangement in accordance with the invention, ready for assembly on a pumpmg set;
  • FIGS. 2, 3, 4, illustrate three stages of the invention
  • FIG. 5 illustrates, in axial section, a modification of the structure according to the invention.
  • FIGS. 6 and 7 illustrate in section a portion of a further embodiment of the invention in two different stages of the application thereof.
  • FIG. 1 illustrates a sealed enclosure 1 terminated by a metal tip 2 carrying at its end a flange 3 which may be integral therewith and machined at the same time as the tip or otherwise affixed on the tip in a tight manner.
  • the flange 3 is connected to a flange 4 by a flexible and tight bellows 5, for example of corrugated metal, which can be for example brazed at 6 and 7 to the flanges 3 and 4 respectively and which laterally seals off the arrangement while allowing the two flanges to be readily moved towards one another.
  • a central plug 8 is screwed into the flange 4 at one of its ends, whilst the other end is inserted into the tip 2, thus enabling the flanges 3 and 4 to be aligned and any suitable component or assembly of components, such as an electrongun, for example, to be centered axially of the system, prior to the introduction thereof into the vacuum enclosure.
  • FIG. 1 also shows the output of a pumping set 11, equipped with a flange 10 or any other suitable arrangement for a tight con nection to the flange 4, for example with interposition of a sealing joint 12.
  • Pumping orifices 13 are formed in the plug 8 and in the flange 4.
  • the flanges 3, 4 and I are respectively provided with a plurality of holes 18, 19 and 20, the holes 18 and 20 being smooth-bored and the holes 19 screwed. In these holes locking or dowel screws 15, 16 and 17 are inserted as shown in the figures.
  • FIG. 2 illustrates how the vacuum enclosure is connected to the output 11 of the pumping set when it is desired to evacuate this enclosure.
  • FIG. 4 illustrates the preparation of the assembly for a fresh pumping cycle.
  • the evacuated enclosure 1 is opened by releasing the screws 17.
  • the dowel screws 15 (see FIG. 2) are then put in position.
  • the central plug is removed in order to enable the new metal seal 9 to be introduced.
  • the plug is then again placed in the position shown in FIG. 2.
  • a new pumping cycle can dress be commenced.
  • FIG. 5 illustrates a variant embodiment of an exhaust tip closing assembly in accordance with the invention.
  • the pumping orifices 13 are formed in FIG. 1, in the wall of a hollowed plug 9. Instead of that in FIG. 5 longitudinal passages 21 are formed in a solid plug. This may allow a more rapid evacuation of the gases contained in the enclosure.
  • Similar projections and notches 23 are provided on the opposite faces of the flanges 4 and 10 for the same reason.
  • FIG. 6 shows a modification of the exhaust tip closing arrangement according to the invention before the tip has been actually sealed and FIG. 7 shows the same arrangement after the sealing has been performed.
  • FIGS. 6 and 7 has the advantage of providing a sealed enclosure which is less cumbersome. It has the further advantage that the arrangement for sealing the tube may be removed after the sealing has been performed and immediately used for sealing another tube, only the plug actually closing the tip remaining attached to the tip.
  • the enclosure 1, for example a tube envelope, shown in FIGS. 6 and 7 comprises an exhaust tip 2 to which a flange 3a is integrally fixed.
  • a flange 3a On the flange 3a is mounted, by means of dowels A, a further flange or rim 3b, a suitable joint 19 being inserted for tightness purposes between the flange 3a and the rim 3b.
  • a flange or rim 4b is mounted on the flange 10 which is mounted at the input of the pumping set 11.
  • the rims 3b and 4b are interconnected by bellows 5, which are, for example, soldered to the rims 4b and 3b respectively at suitable shoulders 6 and 7 formed therein.
  • the rim 4b has a projecting portion 40 which on its outward end face carries a plug 41 which is fixed thereto by means of dowel screws D.
  • Dowel screws 42 are provided for centering the assembly carried by the flange 10.
  • a metal joint 9 is placed on the end face of the plug 41.
  • the gas contained in the enclosure 1 flows through the opening 13 provided in the projecting portion 40 of the rim 4b.
  • the nuts 46 are completely unscrewed, the bellows 5 collapse and the joint 9 is squashed between the flange 3a and the plug 41.
  • the assembly can then be removed from the enclosure 1.
  • dowels B are first unscrewed and the assembly is thus disconnected from the pumping set. Centering screws 42 are removed, dowels C are then put in place, and dowels D and dowels A finally removed.
  • the enclosure 1 is then closed only with the plug 41.
  • the invention is applicable to any scaled enclosure which has to be pumped or filled with any kind of gas, especially if rapid and repeated mounting on and dismantling from a gas pumping or filling set is desired.
  • the invention is not limited to the embodiments described and shown. In practical various kinds of joints or flanges can be used. Also the flange 3 of the exhaust tip closing arrangement may be integral with the tip 2 or the closing arrangement may comprise a flange member 3 which is in any suitable manner tightly connected to the tip 2.
  • An arrangement for sealing the exhaust metallic tip of an enclosure comprising: a first flange having at least one portion tightly connected to said tip, a second flange matched to said first flange and arranged for connection to a pumping set, a plug associated with said second flange for closing said tip, said plug and said second flange thus forming an assembly, ducts extending through said assembly for connection of said tip to said pumping set, and flexible bellows connecting said assembly to said first flange.
  • each of said flanges comprises a first and a second portion disconnectable from each other, said first portion of said first flange being said at least one portion tightly connected to said tip, said plug being associated with said second portion of said second flange and said bellows extending between said second portions of said flanges.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)
  • Joints Allowing Movement (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Particle Accelerators (AREA)
  • Diaphragms And Bellows (AREA)
US5315A 1969-02-04 1970-01-23 Systems for sealing enclosures Expired - Lifetime US3650429A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6902398A FR2031689A5 (enrdf_load_stackoverflow) 1969-02-04 1969-02-04

Publications (1)

Publication Number Publication Date
US3650429A true US3650429A (en) 1972-03-21

Family

ID=9028583

Family Applications (1)

Application Number Title Priority Date Filing Date
US5315A Expired - Lifetime US3650429A (en) 1969-02-04 1970-01-23 Systems for sealing enclosures

Country Status (4)

Country Link
US (1) US3650429A (enrdf_load_stackoverflow)
DE (1) DE2004642A1 (enrdf_load_stackoverflow)
FR (1) FR2031689A5 (enrdf_load_stackoverflow)
GB (1) GB1263444A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932922A (en) * 1973-04-26 1976-01-20 A/S E. Rasmussen Pipe systems for hot media
US4984611A (en) * 1989-04-05 1991-01-15 Zojirushi Corporation Vacuum storage device
US12018672B2 (en) 2020-04-02 2024-06-25 Idex Health And Science Llc Precision volumetric pump with a bellows hermetic seal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT512150B1 (de) * 2011-12-01 2013-06-15 Hermeling Werner Dipl Ing Kupplung für tiefkalt verflüssigte gase

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1728034A (en) * 1923-03-09 1929-09-10 Gen Electric Exhaust head
US2683614A (en) * 1951-12-08 1954-07-13 Cons Vacuum Corp Vacuum actuated seal for evacuating mechanism
GB722303A (en) * 1951-11-29 1955-01-19 Eastman Kodak Co Improvements in or relating to vacuum chambers and seals therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1728034A (en) * 1923-03-09 1929-09-10 Gen Electric Exhaust head
GB722303A (en) * 1951-11-29 1955-01-19 Eastman Kodak Co Improvements in or relating to vacuum chambers and seals therefor
US2683614A (en) * 1951-12-08 1954-07-13 Cons Vacuum Corp Vacuum actuated seal for evacuating mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932922A (en) * 1973-04-26 1976-01-20 A/S E. Rasmussen Pipe systems for hot media
US4984611A (en) * 1989-04-05 1991-01-15 Zojirushi Corporation Vacuum storage device
US12018672B2 (en) 2020-04-02 2024-06-25 Idex Health And Science Llc Precision volumetric pump with a bellows hermetic seal

Also Published As

Publication number Publication date
GB1263444A (en) 1972-02-09
FR2031689A5 (enrdf_load_stackoverflow) 1970-11-20
DE2004642A1 (de) 1970-08-06

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