WO1993011391A1 - Dispositif de reglage pour chalumeau a gaz, et chalumeau a gaz associe audit dispositif - Google Patents
Dispositif de reglage pour chalumeau a gaz, et chalumeau a gaz associe audit dispositif Download PDFInfo
- Publication number
- WO1993011391A1 WO1993011391A1 PCT/FR1992/001107 FR9201107W WO9311391A1 WO 1993011391 A1 WO1993011391 A1 WO 1993011391A1 FR 9201107 W FR9201107 W FR 9201107W WO 9311391 A1 WO9311391 A1 WO 9311391A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- torch
- regulation
- sensors
- pressure
- gas
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/10—Auxiliary devices, e.g. for guiding or supporting the torch
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N5/184—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N2005/185—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/08—Microprocessor; Microcomputer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/04—Measuring pressure
- F23N2225/06—Measuring pressure for determining flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/14—Fuel valves electromagnetically operated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2241/00—Applications
- F23N2241/11—Torches
Definitions
- Adjustment device for gas torch and gas torch associated with said device.
- the present invention relates to the field of gas torches, and more particularly to the adjustment of torches supplied with gaseous fluids by associated supply circuits.
- gas torches find their use in particular in cutting techniques, in particular oxy-acetylene cutting, welding or brazing (oxybrasing for example), probing, or even cutting (oxy-cutting for example).
- Adjustment means are usually provided for these torches, which allows their power to be adjusted. The adjustment is then carried out by a direct action on the distribution members of the gaseous fluids which supply the torch, in order to vary the flow rate.
- the experienced operator has a more or less precise idea of the power of the torch which is related to the type of work to be carried out (cracking, flame cutting, sounding, etc.). It then makes the corresponding adjustments, so as to obtain a power as suitable as possible.
- the nozzle body of the torch may be exposed to various projections (for example projections of molten metal when the torch is placed in the immediate vicinity of a stripping bath), which generate an occlusion.
- more or less important one or more channels for conveying gaseous fluids in the nozzle body of the torch Such an occlusion then induces a more or less large modification of the supply of gaseous fluids, and consequently a more or less significant dere ⁇ setting of the power of the torch.
- Such misadjustments are generally progressive, and eventually lead to anomalies in the work produced. This means that the operator must remain constantly attentive to the work carried out by the torch, so as to be ready to intervene on the gaseous fluid distribution members as soon as he notices a deterioration in the work carried out.
- the settings of the distribution members may not be constant, and depend on the operator who performs the work.
- the object of the invention is to devise a means of
- the object of the invention is also to provide an adjustment means giving great security against risks of untimely occlusion of the channels of the nozzle body of the
- Another object of the invention is to provide an adjustment means providing great flexibility, in particular allowing easy and almost instantaneous adaptation to the work to be performed.
- the object of the invention is finally to design an adjustment means which is compatible with automation. full of work.
- an adjustment device for a gas torch supplied with gaseous fluids by associated supply circuits characterized in that it comprises, for each supply circuit, a regulation loop allowing a individual regulation of the associated gaseous fluid during operation of the gas torch, said regulation loop comprising a flow and / or pressure sensor integrated into the torch and a regulation assembly interposed on the associated supply circuit, said regulation assembly being controlled as soon as a deviation from a set value is signaled by said sensor.
- the regulation assemblies are connected to a central control unit of the automaton type.
- the automaton is designed to define the adjustment instructions for each of the regulation assemblies so as to - achieve self-regulation of the power of the torch for a given job of said torch. It is also interesting that the automaton is connected to a keyboard capable of transmitting the orders associated with new set values, so as to allow a modification of the power of the torch for a desired work of said torch. More preferably, at least one of the regulating assemblies is constituted by an electro-pneumatic pressure regulator with integrated electronic control. In particular, each of the sensors delivers a setpoint analog electrical signal in proportion to which the pressure of the gaseous fluid concerned is regulated by the associated regulator.
- the device comprises regulation loops for the individual regulation of a combustible gas such as acetylene, and associated heating oxygen, as well as for the individual regulation of a flow of pure oxygen for burning steel (flushing oxygen).
- a combustible gas such as acetylene
- heating oxygen a combustible gas
- flow of pure oxygen for burning steel flushing oxygen
- the invention also relates to a gas torch associated with an adjustment device which exhibits one or more of the aforementioned characteristics, said torch comprising a head to which the associated supply circuits terminate and a nozzle body mounted on said head, this torch then being characterized in that the head has a plurality of integrated sensors, with a sensor associated with each supply circuit, said sensors being sensitive to the flow rate and / or the pressure of the gaseous fluid concerned passing through the nozzle body .
- the integrated sensors are sensitive to the flow and / or pressure of a combustible gas such as acetylene, and associated heating oxygen, as well as to the flow and / or the pressure of a flow of pure oxygen for the burning of steel.
- a combustible gas such as acetylene, and associated heating oxygen
- the sensors integrated into the head of the torch are membrane or diaphragm sensors, or sensors of the pressure switch type.
- the single figure illustrates an adjustment device
- the gas torch C comprises a head T to which the associated supply circuits terminate, and a nozzle body CB mounted on said head.
- An outlet nozzle ES is provided at the end of the nozzle body CB, said outlet nozzle being able to be used for the flame of the torch, as is the case for an oxyacetylene stripping, or for the emission of a flow of oxygen. pure for burning steel, as in the case of an oxycut technique.
- the supply circuit 30 is associated with a combustible gas (oxy-fuel) such as acetylene, and that the circuit 10 is associated with the heating oxygen provided for supplement the fuel gas necessary for the formation of the torch flame; the supply circuit 20 will then be associated with a flow of pure oxygen for burning the steel (flushing oxygen). It is naturally possible to provide another supply circuit associated with a pickling fluid, or alternatively to assign the supply circuit 20 to the circulation of such a pickling fluid.
- oxy-fuel combustible gas
- the circuit 10 is associated with the heating oxygen provided for supplement the fuel gas necessary for the formation of the torch flame
- the supply circuit 20 will then be associated with a flow of pure oxygen for burning the steel (flushing oxygen). It is naturally possible to provide another supply circuit associated with a pickling fluid, or alternatively to assign the supply circuit 20 to the circulation of such a pickling fluid.
- the adjustment device 100 comprises, for each supply circuit, a regulation loop 110, 120, 130 allowing individual regulation of the associated gaseous fluid during the operation of the gas torch C, each regulation loop comprising a flow and / or pressure sensor integrated into the torch, and a regulation assembly interposed on the associated supply circuit.
- the inlet circuit 10 of gaseous fluid thus arrives on a regulating assembly 112, to exit therefrom by a portion of circuit 11 making it possible to supply the head T of the gas torch with the gaseous fluid concerned.
- An associated integrated sensor 111 which is sensitive to the flow rate and / or the pressure of the gaseous fluid concerned passing through the nozzle body CB, makes it possible to detect any deviation from a set value.
- a corresponding signal is sent by the associated link 115 to the regulation assembly 112, said regulation assembly being controlled as soon as a deviation from a predetermined set value is indicated by said sensor.
- the inlet circuit 20 for gaseous fluid passes through a regulating assembly 122, downstream of which the gaseous fluid arrives via a portion of circuit 21 at the head of the torch T, at an associated sensor 121 capable of detecting a deviation from a predetermined set value for the gaseous fluid considered.
- the corresponding signal is sent by the link 125 to the regulation assembly 122, said regulation assembly being controlled as soon as a deviation from a set value is signaled by said sensor.
- the inlet circuit 30 of gaseous fluid passes through a regulating assembly 132, to arrive via a portion of circuit 31 at the torch head T, at the level of an associated sensor 131 capable of detecting a deviation relative to a predetermined setpoint for the fluid concerned.
- the corresponding signal is then sent via the link 135 to the associated regulation assembly 132.
- all types of existing sensors can be used which are sensitive to the flow rate and / or the pressure of a gaseous fluid. Mention may be made, for example, of membrane sensors, diaphragm sensors, or even sensors of the pressure switch type.
- control sets 111/121, 131 it is advantageous that at least one of these ensem- wheat is constituted by a pneumatic pressure regulator to bmw ⁇ integrated control electronics.
- these will be identical regulators, so as to simplify their control by a central control unit 140 of the automaton type.
- a control unit associated with each individual regulation unit 112, 122, 132 it is more advantageous to provide a central control unit 140, connected by the associated links 117, 127, 137 to the respective regulating sets 112, 122, 132.
- Each of the regulating sets 112, 122, 132 is shown here in schematic form, with a member 113, 123, 133 which represents the servo-control chamber and the associated solenoid valve, the exhaust of gaseous fluid being symbolized by the arrow 114, 124, 134.
- the member 116, 126, 136 represents a differential amplifier comprising a link 117, 127, 137 associated with the setpoint signal given by the central control unit 140, and a link 115, 125, 135 associated with the signal input external feedback (voltage or current as appropriate) from the associated integrated sensor 111, 121, 131.
- Such electro-pneumatic pressure regulators with integrated electronic control thus make it possible to obtain a regulated pressure for each n of the gaseous fluids concerned.
- the regulation loops 110, 120, 130 allow individual regulation of the associated gaseous fluid during the operation of the gas torch.
- the adjustment device is therefore sensitive to any disturbance occurring on one or the other of the circuits. of gaseous fluid, as soon as a deviation from the setpoint considered is signaled by the associated sensor.
- Such individual control of the gaseous fluid supplying the gas blowpipe can be provided to a non-limiting number of flui gaseous .es associated.
- the regulation loops 110, 120, 130 make it possible to carry out individual regulation respectively of the heating oxygen associated with the combustible gas, of pure oxygen for the burning of the steel, and of the combustible gas such than acetylene.
- the automaton 140 will be designed to define the adjustment instructions for each of the regulation assemblies 112, 122, 132, so as to achieve self-regulation of the power of the torch C for a given job of said torch.
- the adjustment setpoints being defined on the regulating assemblies 112, 122, 132 by the controller 140, the sensors 111, 121, 131 signal to the controller 140 any deviation from the setpoints, which is immediately reflected by the said setpoint. PLC with regulating assemblies 112, 122, 132 concerned, and this until the drift observed by said sensors disappears.
- Such self-regulation can be easily implemented using electro-pneumatic pressure regulators with integrated electronic control of the type described above, each of the sensors 111, 121, 131 delivering an analogical electrical signal of reference proportional to which the pressure of the gaseous fluid concerned is regulated by the associated regulator 112, 122, 132.
- the automaton then has in memory the corresponding values of the parameters relating to each of the gaseous fluids, so that each regulation assembly 112, 122, 132 has its own adjustment instructions.
- controller 140 is also advantageous for the controller 140 to be connected, by a link referenced here 145, to a keyboard 150 capable of transmitting the orders associated with new setpoint values, so as to allow a modification of the power of the torch C for a desired work of said torch. It is then another mode of use of the invention, in the context of which it appears desirable to be able to adapt the power of the torch as a function of the work to be carried out, for example as a function of the surface condition. of the product to be dissected. From the keyboard 150, the operator can then give the order to the controller 140 for a new power value, which is directly transmitted to that or those of the regulation assemblies concerned. The regulation then adjusts automatically according to the reading carried out by the associated sensor or sensors 111, 121, 131.
- Such a modification of power allows great flexibility of use of the torch, insofar as it becomes possible for the operator to instantly adjust the power of his torch to the work he wishes to obtain.
- Such a regulation means is also perfectly compatible with complete automation of work. This will be particularly the case if a gas torch is fitted internally with an observation device visual, said device being of the type comprising an optical fiber at the end of which is provided a coaxial objective to the main orifice of the nozzle body.
- Chalu ⁇ meaux of this type with internal vision by optical fiber allow direct inspection of the surface worked during or not working, and also to read and record on video any defects in the surface worked and / or inspected, for example faults revealed by a cracking bath.
- Reference may be made to document FR-A-2,628,667 which illustrates such a gas torch, the head of which comprises a nozzle body fitted internally with an optical device for visual observation.
- the invention therefore also relates to a gas torch associated with an adjustment device 100 in accordance with the invention, said torch being remarkable in that its head T comprises a plurality of integrated sensors 111, 121, 131, with a sensor associated with each supply circuit, said sensors being sensitive to the flow rate and / or the pressure of the gaseous fluid concerned passing through the nozzle body CB of said torch.
- the integrated sensors 111, 121, 131 will be sensitive to the flow and / or pressure of a combustible gas such as acetylene, and of the associated heating oxygen, as well as to the flow and / or to the pressure of a flow of pure oxygen for burning steel (flushing oxygen).
- the sensors integrated in the head of the torch may be membrane or diaphragm sensors, or sensors of the pressure switch type, as has been explained above.
- the number of supply circuits can be arbitrary, insofar as each circuit has its associated regulation loop, with sensor and regulation assembly, each regulation assembly being able to be connected to the same central control unit.
- the gaseous fluids may also be of very diverse type, apart from the case illustrated here of oxygen and acetylene: it will thus be possible to provide a pickling fluid, or even a fluid with high kinetic energy to help thermal shocks and / or to perform a clearance of the surface worked and / or inspected by the mechanical action of the ejected fluid.
- the fields of application could also be very varied, and could concern both surface treatments (cutting, for example) or in penetration (oxycoupa ⁇ ge).
- the control of the gaseous fluids used makes it possible to automate heating processes, such as those encountered in oxy-brazing, and even to envisage surface treatments of non-combustible materials, such as granite. .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Arc Welding In General (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP93901795A EP0615602A1 (fr) | 1991-12-03 | 1992-11-27 | Dispositif de reglage pour chalumeau a gaz, et chalumeau a gaz associe audit dispositif |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR91/14943 | 1991-12-03 | ||
| FR9114943A FR2684435B1 (fr) | 1991-12-03 | 1991-12-03 | Dispositif de reglage pour chalumeau a gaz, et chalumeau a gaz associe audit dispositif. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1993011391A1 true WO1993011391A1 (fr) | 1993-06-10 |
Family
ID=9419607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1992/001107 Ceased WO1993011391A1 (fr) | 1991-12-03 | 1992-11-27 | Dispositif de reglage pour chalumeau a gaz, et chalumeau a gaz associe audit dispositif |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0615602A1 (fr) |
| AU (1) | AU3259693A (fr) |
| FR (1) | FR2684435B1 (fr) |
| WO (1) | WO1993011391A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997020175A1 (fr) * | 1995-11-27 | 1997-06-05 | Arcotec Oberflächentechnik Gmbh | Dispositif de regulation d'un melange gaz-air pour traitement a la flamme |
| EP1918055A1 (fr) * | 2006-10-30 | 2008-05-07 | Aute AG Gesellschaft für autogene Technik | Procédé et dispositif de fonctionnement d'un oxycoupeuse pour l'oxycoupage de tronçons de coulée et de pièces à usiner |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1571901A (en) * | 1999-10-29 | 2001-05-14 | Matthew P. Pasulka | Accelerated steel cutting methods and machines for implementing such methods |
| DE10202424C1 (de) * | 2002-01-22 | 2003-04-17 | Messer Cutting & Welding Gmbh | Verfahren für die automatische Erkennung von unterschiedlichen Schneiddüsen |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2737347A (en) * | 1947-08-01 | 1956-03-06 | Union Carbide & Carbon Corp | Automatic gas ratio control system |
| US3216661A (en) * | 1961-10-10 | 1965-11-09 | George K Mckenzie | Combustion control apparatus |
| EP0148405A1 (fr) * | 1983-12-13 | 1985-07-17 | Messer Griesheim Gmbh | Procédé de recherche d'arête d'une buse de soudage et/ou de coupe, dégageant du gaz, en mouvement vers une arête de pièce à usiner |
| EP0188763A2 (fr) * | 1984-12-24 | 1986-07-30 | Messer Griesheim Gmbh | Méthode de contrôle et/ou de régulation de débits de gaz |
| DE3915247A1 (de) * | 1989-05-10 | 1990-11-15 | Messer Griesheim Gmbh | Verfahren zum automatischen einstellen von brenngas/sauerstoff- oder luft-gemischen von waerm- oder schneidbrennern |
| WO1991006809A1 (fr) * | 1989-10-30 | 1991-05-16 | Honeywell Inc. | Commande de combustion a micropont |
-
1991
- 1991-12-03 FR FR9114943A patent/FR2684435B1/fr not_active Expired - Fee Related
-
1992
- 1992-11-27 AU AU32596/93A patent/AU3259693A/en not_active Abandoned
- 1992-11-27 EP EP93901795A patent/EP0615602A1/fr not_active Withdrawn
- 1992-11-27 WO PCT/FR1992/001107 patent/WO1993011391A1/fr not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2737347A (en) * | 1947-08-01 | 1956-03-06 | Union Carbide & Carbon Corp | Automatic gas ratio control system |
| US3216661A (en) * | 1961-10-10 | 1965-11-09 | George K Mckenzie | Combustion control apparatus |
| EP0148405A1 (fr) * | 1983-12-13 | 1985-07-17 | Messer Griesheim Gmbh | Procédé de recherche d'arête d'une buse de soudage et/ou de coupe, dégageant du gaz, en mouvement vers une arête de pièce à usiner |
| EP0188763A2 (fr) * | 1984-12-24 | 1986-07-30 | Messer Griesheim Gmbh | Méthode de contrôle et/ou de régulation de débits de gaz |
| DE3915247A1 (de) * | 1989-05-10 | 1990-11-15 | Messer Griesheim Gmbh | Verfahren zum automatischen einstellen von brenngas/sauerstoff- oder luft-gemischen von waerm- oder schneidbrennern |
| WO1991006809A1 (fr) * | 1989-10-30 | 1991-05-16 | Honeywell Inc. | Commande de combustion a micropont |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997020175A1 (fr) * | 1995-11-27 | 1997-06-05 | Arcotec Oberflächentechnik Gmbh | Dispositif de regulation d'un melange gaz-air pour traitement a la flamme |
| US6285922B1 (en) * | 1995-11-27 | 2001-09-04 | Fritz Bloss | Device for controlling a gas-air mixture for a gas flame treatment |
| EP1918055A1 (fr) * | 2006-10-30 | 2008-05-07 | Aute AG Gesellschaft für autogene Technik | Procédé et dispositif de fonctionnement d'un oxycoupeuse pour l'oxycoupage de tronçons de coulée et de pièces à usiner |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2684435A1 (fr) | 1993-06-04 |
| AU3259693A (en) | 1993-06-28 |
| EP0615602A1 (fr) | 1994-09-21 |
| FR2684435B1 (fr) | 1994-02-18 |
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