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81 条记录 (耗时 0.015 秒)

    IMPROVEMENTS IN BURNERS
    73.
    发明公开
    IMPROVEMENTS IN BURNERS 失效
    改进燃烧器

    公开(公告)号：EP1017956A1

    公开(公告)日：2000-07-12

    申请号：EP98932333.2

    申请日：1998-07-01

    申请人： Drax Torches Limited

    发明人： BALL, Graham, John ,  CONIBEER, Gavin, JohnStephenson Research Centre ,  THIRTLE, John, Martin ,  DOWNIE, Neil, Alexander

    IPC分类号： F23D14/38 ,  F23D14/62 ,  F23D14/54 ,  F23D14/66

    CPC分类号： F23D14/62 ,  F23D14/28 ,  F23D14/38 ,  F23D14/66 ,  F23L2900/15042 ,  Y02E20/348

    摘要： A gas burner which can use a hydrocarbon fuel other than acetylene or methylacetylene as the fuel gas and air as the oxidant has means (18) for preheating the oxidant gas and means (14) for preheating the fuel gas which becomes cracked. These gases are delivered into a chamber (67) where they become mixed under highly turbulent conditions, and then pass through nozzle (86) and shroud (100) and form a flame (97) of high intensity and high turbulence. The flame typically produces more than 150 MW/metre3, e.g. 300-500 MW/metre3 for lower temperature operations and at least 500 MW/metre3 for welding or cutting steel. Its turbulence, indicated by its acoustic/thermal ratio, is typically about 6x10-6 and enables air of the boundary layer which insulates the workpiece to be stripped off. In an alternative arrangement configured as a gas cutting torch, preheated air or other cutting gas is supplied to a jet adjacent the main flame. A gas torch or gas cutting torch according to the invention can be fuelled with propane or propylene which are inexpensive to store and use, but can achieve a performance comparable to that of an oxyacetylene torch.

    Oxy-fuel cutting torch head seat insert and method of use
    77.
    发明公开
    Oxy-fuel cutting torch head seat insert and method of use 审中-公开
    氧气燃料割炬头座插件和使用方法

    公开(公告)号：EP0902234A2

    公开(公告)日：1999-03-17

    申请号：EP98203044.7

    申请日：1998-09-11

    申请人： L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE

    发明人： Dixon, Thomas J. ,  Papachristos, Caterina ,  Deslauriers, Guy ,  Gerges, Samir

    IPC分类号： F23D14/54

    CPC分类号： F23D14/54 ,  Y02E20/344

    摘要： A molded, non-metallic insert (206) is disclosed that is of a form which replicates the seat configuration of the oxy-fuel cutting torch into which it is intended to be inserted. The insert material is compressible and resilient and allows a cutting tip (204), without special requirements, to be installed into the cutting torch so equipped with the insert. The insert is resistant to the difficult environmental conditions in which it is required to operate, in the industrial situations in which it is used. The insert resists elevated temperatures and the chemical and physical effects of the gases it contacts while sealing the flowpaths of the oxygen and fuel flowing through the torch head (202) and cutting tip (204).

    摘要翻译： 公开了一种模制的非金属插入件（206），其形式为复制插入其中的氧 - 燃料切割炬的座部构造。 该插入材料是可压缩和有弹性的，并且允许在没有特殊要求的情况下将切割尖端（204）安装到如此配备有插入件的割炬中。 该插入件能够抵抗在其使用的工业环境中需要操作的困难环境条件。 该插入件抵抗升高的温度以及它接触的气体的化学和物理效应，同时密封流过炬头（202）和切削尖端（204）的氧气和燃料的流动路径。