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首页> 外国专利> SUPERSONIC BURNER FOR GAS FLAME SPRAY-DEPOSITION OF COATINGS

SUPERSONIC BURNER FOR GAS FLAME SPRAY-DEPOSITION OF COATINGS

机译：涂层火焰喷涂的超音速燃烧器

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FIELD: installation for spray deposition of coatings. SUBSTANCE: nozzle has the form of a circular aerodynamic nozzle with a flat profiled central body whose internal space is in communication with the powder supply line and the region adjoining the external surface of the profiled portion of the central body. The longitudinal axis of each fuel supply channel may lie in a plane tangent to the circle perpendicular to the longitudinal axis of the combustion chamber and form an angle other than he right angle with said axis. The outer end of the nozzle head opposite the inlet portions of the fuel channels may have two circular grooves communicating with said inlet portions. Said grooves are tightly sealed by covers and form two circular collector channels one of which communicates with the fuel supply system while the other one, with the oxidant supply system. The internal space of the central body may communicate with the space adjoining the external surface of the profiled portion of the central body through holes in its side wall, preferably on the supercritical portion of the nozzle and has the form of a longitudinal through channel. The burner may have a pipe branch and a pipe disposed therein and extending beyond the limits of the branch pipe. At one end said branch pipe is tightly secured on the pipe at the side opposite the central body. The injector head has the form of a circular disc fitting around the branch pipe and secured to its middle portion while the central body is a hollow shell enveloping the branch pipe and forming a circular gap therebetween, communicated in a spaced relation through the nonfastened end of the branch pipe. The ends of the shell are secured on one of the protruding ends of the pipe and on the injector head and can be made integral with it. The wall of the combustion chamber and the subsonic portion of the nozzle are preferably made in the form of internal, intermediate and external shells arranged so as to form an inlet slotted duct between the internal and intermediate shells, said duct being connected to the cooling liquid supply system and an outlet slotted duct between the intermediate and external shells, said duct being connected to the cooling liquid outlet system. One end of the shells is secured to the injector head while the other one interconnects the inlet and outlet slotted ducts through the nonfastened end of the intermediate shell, forming a combustion chamber cooling duct. The injector head may be provided with circular collector recesses on the periphery and opposite the branch pipe, said recesses being interconnected by radial channels so that one of the recesses communicates with the coolant supply system and the other one, with the coolant outlet system. As an alternative, the peripheral circular recess may communicate with the inlet slotted duct and the other one, with the circular slot. The fuel supply channels may then be disposed between the radial channels. The injector head may also be made of two parts of which the first one has the form of a disc with a cylindrical channel coaxial with the disc and the second one, the form of a cylindrical bushing with flanges, inserted into the through channel. The internal, intermediate and external shells are secured on the first portion which also accommodates circular collector recesses and radial channels and the branch pipe is secured on the cylindrical bushing. The collector recess communicating with the circular gap is sealed on the cylindrical bushing by circular seals disposed on both sides of the collector recess. The branch pipe can also be made integral with the cylindrical bushing EFFECT: higher acceleration velocity of the powder particles injected into the stream of the combustion products at a minimum energy losses.
机译：技术领域：喷涂涂层的安装。物质：喷嘴具有圆形气动喷嘴的形式，该喷嘴具有扁平的异形中央主体，其内部空间与粉末供应管线以及与中央主体异形部分的外表面相邻的区域连通。每个燃料供应通道的纵向轴线可以位于与垂直于燃烧室的纵向轴线的圆相切的平面中，并且与所述轴线形成不同于直角的角度。与燃料通道的入口部分相对的喷嘴头的外端可具有与所述入口部分连通的两个圆形凹槽。所述凹槽由盖紧密密封，并形成两个圆形收集器通道，其中一个与燃料供应系统连通，而另一个与氧化剂供应系统连通。中心体的内部空间可通过其侧壁中的孔，优选地在喷嘴的超临界部分上与邻接中心体的轮廓部分的外表面的空间连通，并具有纵向贯通通道的形式。燃烧器可以具有支管和布置在其中的并且延伸超过支管的界限的管。所述支管的一端在与中心体相对的一侧上牢固地固定在管上。喷油头具有圆盘形式，安装在支管周围并固定在其中间部分，而中心体是空心壳，包围着支管并在它们之间形成圆形间隙，并通过管子的未固定端以一定间隔连通。支管。壳体的端部固定在管道的突出端之一上，并固定在喷油器头上，并且可以与之成为一体。燃烧室的壁和喷嘴的亚音速部分优选地以内壳，中间壳和外壳的形式制成，布置成在内壳和中间壳之间形成入口开槽的导管，所述导管连接到冷却液。供给系统和在中间壳体与外壳之间的带槽缝的出口管道，所述管道连接到冷却液出口系统。壳体的一端固定到喷射器头上，而另一端则通过中间壳体的未固定端部将入口和出口的开槽管道相互连接，从而形成燃烧室冷却管道。喷射器头可在外围且与支管相对地设置有圆形收集器凹部，所述凹部通过径向通道互连，使得凹部中的一个与冷却剂供应系统连通，而另一个与冷却剂出口系统连通。作为替代，外围圆形凹口可与入口槽形管道连通，而另一个与圆形槽连通。然后可以将燃料供应通道设置在径向通道之间。喷射器头部也可以由两部分制成，其中第一部分具有盘的形式，具有与盘同轴的圆柱形通道，而第二部分具有带凸缘的圆柱形衬套的形式，插入通孔中。内壳，中间壳和外壳壳固定在第一部分上，该部分还容纳圆形收集器凹槽和径向通道，支管固定在圆柱形衬套上。与圆形间隙连通的收集器凹部通过设置在收集器凹部两侧的圆形密封件密封在圆柱形衬套上。支管也可以与圆柱形衬套制成一体效果：以最小的能量损失，以较高的能量喷射到燃烧产物流中的粉末颗粒。

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