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22. 发明授权

US4519541A Torch flame spray system 失效
标题翻译：火炬喷火系统
公开(公告)号：US4519541A
公开(公告)日：1985-05-28
申请号：US439813
申请日：1982-11-08
申请人： Anthony J. Rotolico
发明人： Anthony J. Rotolico
IPC分类号： F23D14/38 , B05B7/20 , B05B7/22 , C23C4/12 , B05B17/00
CPC分类号： B05B7/206
摘要： A flame spray system comprising a torch is provided having a gas mixing chamber and means for feeding acetylene and oxygen to the mixing chamber in a preselected proportion. The system includes acetylene valve means with an orifice restrictor for feeding the gas to a mixing chamber, the orifice size being selected to provide, in the choked state, a flow of acetylene therethrough under a selected choke pressure. Oxygen valve means is also provided with an orifice restrictor of size selected to provide in the choked state a flow of oxygen therethrough under a selected choke pressure, the ratio of oxygen flow rate to the acetylene flow rate under the selected pressures to the orifices being such that an increase in pressure for the selected orifice sizes does not substantially change the flow characteristics out of the orifices in the choked state as compared to a decrease in gas pressure to below choke conditions which results in an adverse change in flame characteristics, the flow of the gases through the orifices in the choked state into the mixing chamber resulting in optimum flame chemistry as measured in terms of optimum BTU's per hour.
摘要翻译：提供了包括焊炬的火焰喷射系统，其具有气体混合室和用于以预定比例将乙炔和氧气供入混合室的装置。该系统包括具有用于将气体输送到混合室的孔口限制器的乙炔阀装置，孔口尺寸被选择为在扼流状态下在选定的节流压力下提供乙炔流。氧气阀装置还设置有孔口限制器，其尺寸被选择为在选定的扼流压力下提供处于阻塞状态的氧气流，在所选择的压力下，氧气流速与乙炔流量的比率为这样的与气压相对于低于扼流条件的降低相比，所选择的孔尺寸的压力增加基本上不改变扼流状态的孔之外的流动特性，这导致火焰特性的不利变化，气体通过窒息状态的孔进入混合室，得到最佳的火焰化学性质，按照每小时最佳的BTU计算。

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