• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an oxygen lantern igniter (1) for igniting a thermal oxygen lance (9) intended to be threaded over a certain position over the mouth of the oxygen lance and the ignition oxygen lance (9) during the supply of oxygen via the mouth of the oxygen lance. According to the invention, the igniter (1) is provided with a releasable holding mechanism (11, 12) for holding the oxygen lance (9) during an initial ignition process. Through the invention, a safer and more automated ignition process has been achieved. (Figure 2 is suggested as a publication) gur)
    公开号:SE1000878A1
    申请号:SE1000878
    申请日:2010-08-30
    公开日:2012-03-01
    发明作者:Hannes Vallak
    申请人:Ferrox Ab；
    IPC主号:
    专利说明:

    15 20 25 30 The use of the latter lighter to ignite an oxygen lance also entails safety risks with the risk that the operator is exposed to splashes of molten iron and there is therefore a desire to increase safety thinking further. The object of the present invention is to provide an oxygen igniter with a more automated ignition process in order to thereby increase the safety during use.
    Summary of the Invention The object of the invention is achieved by an oxygen igniter characterized in that the igniter is provided with a retaining mechanism for retaining the oxygen lance during an initial ignition process. The locking arrangement ensures that the lighter is kept locked during the first phase of the ignition when oxygen bends are supplied, at the same time as when the lance is lit the holding mechanism loosens and the lighter is released from the oxygen lance without the operator's involvement. When the lighter is released without the involvement of the operator, the lighter is suitable for automated use. In particular, the ignition of an oxygen lance and the subsequent tasks of the oxygen lance can be handled by a suitably programmed robot. In this way, for example, rapid efforts to prevent stoppages in casting processes can be made by means of a robot-lit and robot-controlled oxygen lance without any human being having to be in the process area and thereby risk being exposed to molten metal.
    According to a preferred embodiment of the oxygen igniter, the holding mechanism is designed to allow the igniter to separate from the oxygen lance under load.
    According to another preferred embodiment of the oxygen igniter, the retaining mechanism is designed to be released under load.
    According to yet another proposed embodiment of the oxygen lantern, the retaining mechanism is arranged to engage the oxygen lance and the relatively oxygen lance far end of the oxygen lantern. Such an embodiment allows a simple holding of the lighter over the tip of the oxygen lance. In particular, it is proposed that the holding mechanism consists of a tension spring, one end of which is releasably fixed in the oxygen lantern and whose other end is arranged to be connected to the oxygen lance via a locking device. Suitably the locking device then consists of a locking ring designed to be threaded over the mantle surface of the oxygen lance. A spiral spring can be used as the drag spring. Proposed inventions of locking mechanism, locking device and puller springs each contribute to constructions which have been found to hold the oxygen lance in the igniter during an initial phase but which in a subsequent phase releases the igniter from the oxygen lance.
    In order to more powerfully control the separation between the oxygen lance and the igniter, according to another proposed embodiment, load-indicating means are arranged to indicate a suitable preload of the holding mechanism.
    Brief Description of the Drawings The invention will be further described below by means of an exemplary embodiment with reference to the accompanying drawings in which: Figure 1 in a longitudinal section schematically shows an example of a known oxygen lantern attached over the tip of an oxygen lance.
    Figure 2 schematically shows an oxygen igniter according to the invention mounted over the tip of an oxygen lance. Detailed embodiment Description The known igniter 1 shown in Figure 1 comprises a sleeve 2 with a fuel set 3 and an igniter 4. The igniter 4 communicates with an external igniter 5 via an ignition channel 6. Furthermore, the interior of the sleeve comprises a space 7 intended to accommodate the tip 8 of an oxygen lance 9 with channels 10 for oxygen supply. The lighter 1 is started by fitting a match, cigarette lighter or the like in connection with the external igniter 5 or alternatively by pulling the igniter towards a blank. Via the ignition channel 6, the ignition means 5 activates the ignition set 4 which ignites the fuel set. When the fuel set burns, temperatures are generated adjacent to the oxygen lance, i.e. just over 1000 degrees Celsius, that the oxygen lance ignites.
    In the embodiment described above, the ignition is initiated from the outside through the external igniter means. It can be mentioned, however, that the ignition can be initiated internally by the oxygen supplied can cause with initiation charge applied to the sleeve and in this context reference is made in particular to the Swedish patent SE C2 521 801. Regardless of igniter type, with or without stub by pushing the oxygen lance 9 into the igniter when the igniter is in contact with a dumb object so that the lance tip 8 comes into contact with the igniter and creates the ignition.
    A lighter 1 according to the invention and shown in a side view with oxygen lance 9 is shown in figure 2. The interior of the lighter may be constructed as described with reference to figure 1 or according to another similar known lighter. For releasably holding the tip 8 of the oxygen lance 9 in the igniter 1, a holding mechanism is provided. In this case the mechanism consists of a tension spring in the form of a coil spring 11 and a locking device in the form of a locking ring 12. The locking ring is threaded over the oxygen lance and the coil spring is attached at one end to the locking ring and at its other end to the igniter sleeve and here more specifically in the relatively oxygen rear lance rear end surface 13 of the sleeve 2.
    The holding mechanism here ensures that the lance tip 8 is pressed with suitable strength against the igniter 4. The moment included in previously known ignition processes to arrange the igniters in contact with a dumb object has thus been eliminated.
    In order to provide a suitable pretension of the holding mechanism, according to a simple embodiment, the coil spring 11 and the sleeve surface 14 of the sleeve 2 can be provided with markings which indicate the force which the oxygen lance abuts against the igniter. In a simple variant, a line 15 on the coil spring which is brought into position opposite a line 16 on the mantle surface 14 of the lighter can indicate suitable abutment force. Alternative and more sophisticated load-indicating agents may also be included.
    The principle of the igniter is now that in an initial ignition process when oxygen is supplied without the oxygen lance being ignited, the holding mechanism retains the oxygen lance in the igniter.
    Once the oxygen lance ignites, the retaining mechanism will be subjected to greater forces resulting in the igniter 1 being released from the oxygen lance 9. This release process is accomplished without the need for any human hand.
    The ignition process is thus designed so that it is suitable for robotic handling of ignition of oxygen lance and subsequent processing, such as cutting or drilling.
    The invention is not limited to the embodiments described above by way of example but may be subject to modifications within the scope of the appended claims.
    权利要求:
    Claims (8)
    [1]
    Oxygen igniter for ignition of thermal oxygen lance intended to be threaded over a certain position over the mouth of the oxygen lance and to ignite the oxygen lance during supply of oxygen via the mouth of the oxygen lance, characterized in that the igniter is provided with a holding mechanism for holding the oxygen lance.
    [2]
    Oxygen igniter according to claim 1, characterized in that the holding mechanism is arranged to engage the oxygen lance and the relative oxygen lance at the far end of the oxygen igniter.
    [3]
    Oxygen igniter according to one of the preceding claims, characterized in that the retaining mechanism consists of a tension spring whose one end is detachably attached to the oxygen igniter and whose other end is arranged to be connected to the oxygen lance via a locking device.
    [4]
    Oxygen lantern according to claim 3, characterized in that the locking device consists of a locking ring designed to be threaded over the mantle surface of the oxygen lance.
    [5]
    Oxygen igniter according to one of Claims 3 to 4, characterized in that the tension spring consists of a helical spring.
    [6]
    Oxygen igniter according to one of the preceding claims, characterized in that load-indicating means are arranged to indicate a suitable pretension of the holding mechanism.
    [7]
    Oxygen igniter according to one of the preceding claims, characterized in that the holding mechanism is designed to allow the igniter to be separated from the oxygen lance under load.
    [8]
    Oxygen igniter according to one of the preceding claims, characterized in that the retaining mechanism is designed to be released under load.
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    同族专利:
    公开号 | 公开日
    SE535522C2|2012-09-11|
    WO2012030269A1|2012-03-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2614155C2|1976-04-02|1977-11-24|Schutz, Manfred, 4030 Ratingen|Oxygen lance detonators|
    EP0007289A1|1978-07-07|1980-01-23|Battelle Memorial Institute|Ignition device for oxygen cutting lances|
    SE468141B|1987-11-12|1992-11-09|Oxy Tuben Ab|LIGHTING DEVICE FOR LANSROT|
    US5622672A|1995-03-24|1997-04-22|Alloy Surfaces Co.|Ignition of thermal lance and means and method for use therewith and therefor|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1000878A|SE535522C2|2010-08-30|2010-08-30|Oxygen igniter for ignition of thermal oxygen lance|SE1000878A| SE535522C2|2010-08-30|2010-08-30|Oxygen igniter for ignition of thermal oxygen lance|
    PCT/SE2011/000152| WO2012030269A1|2010-08-30|2011-08-19|Oxygen lance igniter for igniting a thermal oxygen lance|
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