US3677515A - Coupling for combustion tubes - Google Patents

Coupling for combustion tubes Download PDF

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Publication number
US3677515A
US3677515A US89770A US3677515DA US3677515A US 3677515 A US3677515 A US 3677515A US 89770 A US89770 A US 89770A US 3677515D A US3677515D A US 3677515DA US 3677515 A US3677515 A US 3677515A
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US
United States
Prior art keywords
lance
valve
coupling
passage
casing
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
US89770A
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English (en)
Inventor
Edwin Eduard Fassler
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3677515A publication Critical patent/US3677515A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/14—Drilling by use of heat, e.g. flame drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/14—Drilling by use of heat, e.g. flame drilling
    • E21B7/146—Thermal lances
    • 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
    • F16L7/00—Supporting pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1624—Destructible or deformable element controlled
    • Y10T137/1797—Heat destructible or fusible

Definitions

  • This invention relates to a thermal lance coupling, for connecting a thermal lance to an oxygen supply pipe.
  • Such lances are used for the thermal boring of such hard materials as, for example, concrete, rock or cast iron, oxygen being blown under pressure through a tube known as a thermal lance, the far end of which has first been made white hot. This initiates a process of combustion in which the tube burns away from the front end as the hole is being bored.
  • the tube contains a bundle of wires or rods, which fills the tube but allows the stream of oxygen to be fed through the interstices left between the core and the interior wall of the tube.
  • a connection between the lance and the oxygen supply pipe is required, in the form of a coupling, to enable a lance that has burnt away almost to the end to be quickly and easily changed for a new one.
  • this coupling should make it possible for lances of various diameters to be joined up to the oxygen supply pipe.
  • the safety of such a connection is highly important, care having to be taken to ensure that the flame cannot reach the oxygen supply pipe by way of the lance as this burns back.
  • a valve within the coupling which is consequently necessary, must not only be able, in the emergency just mentioned, to cut off automatically when a flame nears the coupling if, for instance, it is no longer possible to interrupt the oxygen feed in time, but it must also block the oxygen supply pipe whenever there is no lance in the coupling, including moments when, for example, a lance that has burnt away to a stub is being changed for a new one.
  • a further object of the invention resides in the provision within the casing, at that end of the hollow plunger which faces away from the valve, of a clamping device having at least one resilient ring-shaped member, which device is intended to receive the lance and bears against an internal peripheral shoulder on the casing, axial thrust being applied thereto by a capping nut screwed on to the end of the casing, so that the clamping device, by deformation of the resilient member, grips the lance once this has been inserted in opposition to the spring as far as the valveopen position.
  • the lance coupling has a generally tubular casing I, which contains a bore 2, throughout its entire length, the said bore 2 varying in diameter from section to section.
  • a valve 3 which has a conical seating and is held shut by the action of a spring 4.
  • the valve which is shown closed, is opened by downward movement of the hollow plunger 5.
  • this plunger On the end remote from the valve, this plunger is stepped internally to form ring-shaped contact faces 8 and 9, which serve the purpose of centralizing lances two in number, in the example illustrated of different outside diameters.
  • the lance is introduced from the top and thus pushes the plunger down to its bottom position where it is brought to bear on the valve 3 and thus opens it.
  • the clamping device consisting of one rigid bottom ring 10, adjacent to which is a resilient ring member 11, preferably made of rubber, and adjacent thereto a top ring l2,
  • the rigid bottom ring 10 bears against an internal peripheral shoulder 13, while a capping nut 14, which is screwed on to the end of the casing and bears on the upper edge of the ring 12, is tightened once the lance has been introduced as already stated and has thrust the valve into the open position.
  • the resilient member 11 undergoes slight deformation and makes firm contact both with the wall of the casing and with the outside of the lance tube. This also prevents oxygen from escaping along the outside of the lance tube.
  • the top end of the nut 14, which forms a ring of smaller diameter carries an external thread, on which a conical guard 15 is screwed with the aid of a threaded bush 16, fixed to the guard. This guard is interchangeable, so that when a lance of smaller diameter is used, a similar guard containing a smaller opening to match the diameter of that lance can be screwed into place.
  • the members 10, 11 and 12 of the clamping device can be changed for others of suitably reduced inside diameter.
  • the purpose of this two-part design is to enable the connecting nipple likewise to be easily changed for one of another size when it becomes necessary to use a feed pipe of different inside diameter.
  • this lance coupling is that the valve will not open until the spring pressure has been overcome by the lance.
  • the resilient rubber ring will be scorched, releasing the residual stub of lance tube, and the spring will close the valve automatically. Since, however, an unusable rubber ring can readily be replaced by another ring, the coupling can be quickly be brought back into service.
  • a coupling for connecting a thermal lance to an oxygen supply pipe comprising a casing having a passage therethrough, means for connecting an oxygen supply pipe to said casing so as to provide communication with said passage, a valve seat in said passage downstream of said connecting means, a valve in said passage downstream of said connecting means, means for resiliently biassing said valve to a closed position against said valve seat, a hollow plunger downstream of said valve, said plunger being slidably disposed in said passage and being arranged to abut against said valve and a clamping device in said passage for holding a lance in the coupling, said clamping device including a resilient annular-section member and a capping nut threadedly engaged with said casing and arranged, when tightened, to deform said resilient member to grip the inserted lance, said plunger being displaced toward said valve by said lance to thereby open said valve against said resilient biassing means, said plunger being displaced away from said valve to thereby close said valve when a flame reaches the vicinity of said
  • members 3 A lance coupling as claimed in claim 1 in which said clamping device further includes a ring member of unyielding material located in abutment with opposite end faces of said passage and said capping nut, each having an internal shoulder therein, said ring members abutting respectively against said shoulders.
  • a lance coupling as claimed in claim 3 in which said capping nut is externally threaded at its outer end, and a frustoconical guard having means engaging said nut outer end for protecting the hand of an operator grasping said casing.
  • a lance coupling as claimed in claim 4 in which said supply pipe connecting means comprises a gland member threadedly engaged with an end of said passage remote from said capping nut, and an interchangeable pipe-union nipple threadedly engaged with said gland member.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Feeding And Controlling Fuel (AREA)
US89770A 1969-11-20 1970-11-16 Coupling for combustion tubes Expired - Lifetime US3677515A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1728369A CH491712A (de) 1969-11-20 1969-11-20 Brennrohr-Anschlusskupplung

Publications (1)

Publication Number Publication Date
US3677515A true US3677515A (en) 1972-07-18

Family

ID=4424194

Family Applications (1)

Application Number Title Priority Date Filing Date
US89770A Expired - Lifetime US3677515A (en) 1969-11-20 1970-11-16 Coupling for combustion tubes

Country Status (4)

Country Link
US (1) US3677515A (de)
CH (1) CH491712A (de)
DE (1) DE2044492C3 (de)
GB (1) GB1269330A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055332A (en) * 1975-11-03 1977-10-25 Aai Corporation Cutting torch arrangement
US4134576A (en) * 1977-09-06 1979-01-16 Livick Lester R Safety carriage for supporting and guiding an acetylene torch
US4192488A (en) * 1978-04-29 1980-03-11 Messer Griesheim Gmbh Machine mounted torch
US4280523A (en) * 1979-06-22 1981-07-28 The Hansen Manufacturing Company Thermal responsive coupling
US4423855A (en) 1975-07-17 1984-01-03 Rudolf Kallenbach Thermochemical drilling and separating process for Si02 containing minerals and device for carrying out the process
US5927312A (en) * 1998-02-27 1999-07-27 Dryden; Paul E. Method and apparatus for extinguishing combustion within combustible tubing
GB2454698A (en) * 2007-11-15 2009-05-20 Schlumberger Holdings Gas fuel drilling torch

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR973928A (fr) * 1948-10-22 1951-02-16 Air Liquide Perfectionnement aux raccords de tuyauterie à clapet à ouverture automatique
US2842382A (en) * 1955-02-07 1958-07-08 Imp Brass Mfg Co Valved connector
US3494373A (en) * 1966-02-28 1970-02-10 Murdock Mfg & Supply Co The Frostproof hydrant
US3498313A (en) * 1967-05-23 1970-03-03 Daniel E Belich Beer keg tap

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR973928A (fr) * 1948-10-22 1951-02-16 Air Liquide Perfectionnement aux raccords de tuyauterie à clapet à ouverture automatique
US2842382A (en) * 1955-02-07 1958-07-08 Imp Brass Mfg Co Valved connector
US3494373A (en) * 1966-02-28 1970-02-10 Murdock Mfg & Supply Co The Frostproof hydrant
US3498313A (en) * 1967-05-23 1970-03-03 Daniel E Belich Beer keg tap

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423855A (en) 1975-07-17 1984-01-03 Rudolf Kallenbach Thermochemical drilling and separating process for Si02 containing minerals and device for carrying out the process
US4055332A (en) * 1975-11-03 1977-10-25 Aai Corporation Cutting torch arrangement
US4134576A (en) * 1977-09-06 1979-01-16 Livick Lester R Safety carriage for supporting and guiding an acetylene torch
US4192488A (en) * 1978-04-29 1980-03-11 Messer Griesheim Gmbh Machine mounted torch
US4280523A (en) * 1979-06-22 1981-07-28 The Hansen Manufacturing Company Thermal responsive coupling
US5927312A (en) * 1998-02-27 1999-07-27 Dryden; Paul E. Method and apparatus for extinguishing combustion within combustible tubing
WO1999043972A1 (en) * 1998-02-27 1999-09-02 Dryden Paul E Method and apparatus for extinguishing combustion within combustible tubing
GB2454698A (en) * 2007-11-15 2009-05-20 Schlumberger Holdings Gas fuel drilling torch
US20110120771A1 (en) * 2007-11-15 2011-05-26 Bernard Montaron Gas cutting borehole drilling apparatus
GB2454698B (en) * 2007-11-15 2013-04-10 Schlumberger Holdings Gas cutting borehole drilling apparatus
US9022139B2 (en) 2007-11-15 2015-05-05 Schlumberger Technology Corporation Gas cutting borehole drilling apparatus

Also Published As

Publication number Publication date
CH491712A (de) 1970-06-15
DE2044492C3 (de) 1973-10-18
DE2044492B2 (de) 1973-03-22
GB1269330A (en) 1972-04-06
DE2044492A1 (de) 1971-05-27

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