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
  • F16L37/00—Couplings of the quick-acting type
  • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
  • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
  • F16L37/088—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
  • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
• • 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
  • F16L37/00—Couplings of the quick-acting type
  • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members

Definitions

• the invention relates to consumable devices by exothermic reaction, which are used to pierce and open indentation passages of melting furnaces using grease plugs or mixtures of alumina, silica, carbon and others, used in mineral smelting. such as copper, steel and others, by applying mixtures of oxidizing gases or oxygen under pressure.
• the consumable devices of the present invention are suitable for drilling and / or melting any type of material.
• the invention relates to coupling devices for thermal lances or also called oxygen lances in which oxidizing gases circulate, such as oxygen under pressure from one end to the other of said thermal lance.
• the coupling devices allow two or more thermal lances to be coupled, in order to avoid remnants of spear pieces when using the lances.
• a thermal lance in general, corresponds to a long and narrow tube, with an oxidizable outer body and comprising in its entirety one or more oxidizable internal components, such as solid wires.
• the internal bodies are distributed inside the external body, leaving spaces between them.
• a thermal lance is from 8 to 50 mm in diameter and from 1 to 12 m in length.
• the thermal lances reach temperatures, at their ignition end, of the order of 3,500 ° C to 5,530 ° C and the consumption times of a thermal lance are of the order of 0.2 to 5 meters per minute, when the pressure of the oxidizing gas is from 392.3 kPa to 980.7 kPa.
• the coupling piece must be combustible and of adequate firmness, in order to prevent the lance from decoupling.
• One type of coupling that is currently used in thermal lances corresponds to a segment of threaded pipes, which are difficult to assemble, since they need to be screwed.
• Another type of coupling correspond to those of the fast inlay type, these are easier to fit, but they present considerable problems of oxygen flow filtration and usually detach when the lances move alternately in the axial direction. In practice, this generates a lot of difficulty in assembly, leaks in the assemblies and unexpected decoupling, which eventually leads users not to couple, thereby generating significant economic losses due to higher consumption of lances, since the lances cannot be used In its whole.
• Document CN 102128328 describes a quick-closing connection structure for metal pipes and special clamps thereof.
• the structure for rapid locking comprises a pipe joint and a pipe fitting, where the pipe fitting comprises a main body and a connecting end, the pipe fitting is inserted into the connecting end, an annular groove is arranged in the inner circle of the connecting end, a sealing ring in the annular groove, and a polygonal or circular pressure port in and out of the annular groove.
• the invention discloses clamps for quick-closing connection.
• WO 9425786 describes a quick coupling for pipes or hoses comprising a plastic housing that has at least one connection with a first part of the cavity. Inside it has a locking ring, a spacer ring and a sealing ring and all are held in position through a retaining ring. In addition, a metal reinforcement sleeve is available. Additionally, in the field of metal pipes there are some types of devices for coupling said pipes, which mostly have internal threads to achieve coupling.
• an objective of the present invention is to develop a coupling device for thermal lances that allows quick and easy coupling of the lances.
• another objective of the present invention is to have a coupling device that reacts in combustion before it is melted, in the same way that thermal lances react.
• Another objective of the present invention is to develop a coupling device for thermal lances that allows good flexibility to the coupled lance, for example that can be curved.
• Still another objective of the present invention is to develop a coupling device for thermal lances that does not need external elements for coupling, that is to say that only the thermal lance is required to fit in the coupling piece to achieve the coupling, such that the device is fixed firmly to the spears without letting go by applying forces in opposite directions and randomly.
• the present invention relates to a coupling device for thermal lances used to pierce and open indentation passages of melting furnaces using grease plugs or mixtures of alumina, silica, carbon and others, comprising a hollow cylinder with ends Beveled and two inner circular grooves at each end of the device.
• Figure 1 represents a sectional view of a coupling device for thermal lances such as that of the present invention.
• Figure 2 represents a view of the internal parts of the coupling device of the present invention.
• Figure 3 represents a sectional view of a coupling device with a thermal lance coupled at each end of said device.
• Figure 4 represents a perspective view of the coupling device of the present invention. Detailed description of the invention
• the present invention relates to a coupling device (1) for thermal lances used to pierce and / or melt cut any type of material, such as for example drilling and opening indentation passages of melting furnaces using stoppers of grease or mixtures of alumina, silica, carbon and others, comprising a hollow cylinder with beveled ends having two inner circular grooves (2 and 3) at each end of said device.
• the first groove from each end of the coupling device is called the pressure ring groove (3) and the second groove towards the center of the coupling device is called the o'ring groove (2).
• a pressure ring (4) corresponding to a hardened and tempered steel pressure ring is placed in each pressure ring groove as the name implies.
• an o'ring (5) with adequate hardness is placed in each o'ring slot to generate a good seal.
• the internal diameter of the coupling device and the size of said device depend on the diameter of the thermal lance, since each coupling device is manufactured according to the diameter of the thermal lance that needs to be coupled.
• the thermal lances to be coupled can be attachable by one of its ends or by its two ends, depending on the shape of its ends.
• the thermal lance having only one of its ends coupled with the coupling device has one of its ends with an inverted conical shape and also at said end with an inverted conical shape immediately before the start of said inverted conical end the lance has a smooth surface and cylindrical, which has an outer annular groove.
• the thermal lance that has its two ends attachable with the coupling device has its two ends with an inverted conical shape and additionally, in Each end with an inverted conical shape of the spear, prior to the start of each inverted tapered end, the spear has a smooth, cylindrical surface, which has an outer annular groove.
• the coupling between a thermal lance and the coupling device is carried out by introducing the end of the lance, which has the inverted conical shape, into one of the ends of the coupling device.
• a coupling device allows to retain up to two thermal lances at the same time, for which a thermal lance is introduced at each end of the device.
• the coupling device quickly and easily engages with the thermal lance and allows it to be firmly fixed with the lance, since by introducing the thermal lance into one of the ends of the coupling device, the pressure ring engages in the annular groove outside of the thermal lance avoiding the possibility that said lance moves and disengages, in turn the o'ring, located inside the coupling device, seals the space between the lance and the coupling device thus preventing it produce oxygen or oxidizing gas leaks.
• the coupling devices are used to couple two or three or more lances of the same outer diameter. The outer shape of the thermal lances allows easy assembly between a lance and another lance, through the coupling device of the present invention.
• the inverted tapered ends of the lance make it easy to fit with the coupling device and the outer annular groove of the lance allows to secure the fit between the lance and the coupling device.
• a small axial displacement is sufficient at the end of the lance, which allows the pressure ring to enter the lance groove and both elements are coupled without the possibility of decoupling.
• the size of the lances is variable and will depend on the application given to the lance and the location of the outer groove at each end of the lance, allows the lances not to interfere with each other when they are coupled.
• the union of a spear with another spear allows the total consumption of the spears at the time of being in use, in this way there are no remnants of spears and therefore there are no material losses, making the operation more economical.
• the shape of the lances and the coupling devices allows joining as many lances as necessary, in order to avoid losses of lances and give continuity to the operation being executed.
• the coupling device of the present invention is made of steel, which allows working in high temperature areas, up to 1,300 ° C, without melting it, since it has a high melting point, above 1,400 ° C.
• the coupling device is low cost, so that the operation costs are not raised by coupling the thermal lances with this type of coupling devices.
• the coupling device because its ignition point is lower than its melting point allows the coupling device to react in combustion together with the thermal lance when it is ignited and burned and in this way the combustion process when the lances are attached.
• the geometry of the coupling device and its dimensions determine a moment of inertia that together with the strength of the material allows to support all the mechanical stresses of tension and compression generated by the operation of the thermal lances.
• the ends of the coupling device are beveled, in order to serve as a guide to the ends of the lance, at the time of the coupling and so that the pressure ring (4) does not have to deform above its elastic limit to be mounted or inserted into the pressure ring groove (3).
• the coupling device of the present invention is easy to attach, does not require any tools or special structure for assembly, does not decouple under any operating condition and does not filter. Therefore, the use of the coupling device of the present invention brings economic benefits, since there is a better use of the thermal lances and also they achieve more efficient and safer operations, since no oxygen filtration or oxidizing gases are generated, nor unexpected decoupling, which eliminates the risks of unwanted combustion due to oxygen filtration and delays in the operation.
• the thermal lances to be coupled with the coupling device of the present invention have various uses, such as for example in the case of cutting of copper and slag, specifically in: bottoms of pot, pigs or accretions supported, peepholes, oven floors, floors of furnaces with copper and brick material, accretions in furnace walls, cleaning of the nozzle housing area, accretions in the pre-chamber gas outlet, opening of passages, refining furnace and anodes.
• the thermal lances to be coupled can also be used to efficiently open passages in copper, steel, ferroalloy, platinum and other smelting furnaces, regardless of whether the plugs have any composition, even if they are made of pure graphite (carbon). Likewise, they can be used to cut and / or drill steels of any quality or thickness, such as 1,000mm, 2,000mm, 3,000mm and more. Like, they can be used to cut concrete blocks or rocks and stones of any type and dimension.
• thermal lances to be coupled with the coupling device of the present invention can be used for cutting and / or melting of any type of material, including the diamond that is the most resistant to temperature.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Quick-Acting Or Multi-Walled Pipe Joints (AREA)
• Vertical, Hearth, Or Arc Furnaces (AREA)
• Milling Processes (AREA)
• Joints With Sleeves (AREA)
• Arc Welding In General (AREA)
• Carbon Steel Or Casting Steel Manufacturing (AREA)

Priority Applications (12)

Applications Claiming Priority (2)

Publications (1)

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Citations (5)

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• 2013
  • 2013-12-31 CL CL2013003811A patent/CL2013003811A1/es unknown
• 2014
  • 2014-12-19 WO PCT/CL2014/000083 patent/WO2015100510A1/es not_active Ceased
  • 2014-12-19 EP EP14876909.4A patent/EP3096063B1/en active Active
  • 2014-12-19 CN CN201480071943.1A patent/CN105849453A/zh active Pending
  • 2014-12-19 JP JP2016543140A patent/JP2017507289A/ja active Pending
  • 2014-12-19 MX MX2016008563A patent/MX394791B/es unknown
  • 2014-12-19 PE PE2016000853A patent/PE20161156A1/es unknown
  • 2014-12-19 US US15/109,326 patent/US20160319974A1/en not_active Abandoned
  • 2014-12-19 RU RU2016129971A patent/RU2672551C2/ru active
  • 2014-12-19 CA CA2935253A patent/CA2935253A1/en not_active Abandoned
  • 2014-12-19 BR BR112016015330A patent/BR112016015330A2/pt not_active Application Discontinuation
  • 2014-12-19 AU AU2014376119A patent/AU2014376119A1/en not_active Abandoned
• 2019
  • 2019-09-17 AU AU2019232805A patent/AU2019232805A1/en not_active Abandoned
• 2021
  • 2021-08-13 AU AU2021215276A patent/AU2021215276A1/en not_active Abandoned

Patent Citations (5)

Non-Patent Citations (1)

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