Method and apparatus for the active control of a compact waste
incinerator
    33.
    发明授权
    Method and apparatus for the active control of a compact waste incinerator 失效
    积极控制紧凑型垃圾焚烧炉的方法和装置

    公开(公告)号:US5361710A

    公开(公告)日:1994-11-08

    申请号:US138044

    申请日:1993-10-07

    摘要: An improved method and apparatus for actively controlling a combustion process such as a waste incinerator by means of a spatial and temporal synchronized injection of fuel. The improved method and apparatus employs an active control system which controls the intentional formation of large scale, coherent vortices and the synchronized injection of the fuel supply at various locations relative to the formation of the vortices. The preferred apparatus comprises an actuator or similar structure that is adapted for producing and stabilizing discrete, large scale vortices in a combustion device. In addition, another device controls or modulates the injection of the fuel into the vortices at the optimal location and timing relative to the vortex cycle. As applied to an incinerator, this method can be optimized to ensures that the fuel and waste are introduced into the highest temperature locations, were extended residence times are obtained by trapping the fuel and waste inside the vortices. A high combustion efficiency may also be achieved by actively synchronizing the periodic fuel injection with the formation of the vortices.

    摘要翻译: 一种用于通过空间和时间同步喷射燃料主动地控制诸如废物焚化炉的燃烧过程的改进的方法和装置。 改进的方法和装置采用主动控制系统,其控制有意形成大规模相干涡流,并且相对于形成涡流在不同位置同步喷射燃料供应。 优选的装置包括适于在燃烧装置中产生和稳定离散的大尺度涡流的致动器或类似结构。 此外,另一设备在相对于涡流循环的最佳位置和定时处控制或调节燃料喷射到涡流中。 适用于焚烧炉的方法可以优化,以确保将燃料和废物引入最高温度的位置,通过在涡流内捕获燃料和废物获得延长的停留时间。 还可以通过主动地使周期性燃料喷射与涡流的形成同步来实现高燃烧效率。

    Suppressor of oscillations in airframe cavities
    34.
    发明授权
    Suppressor of oscillations in airframe cavities 失效
    机体空腔振荡抑制器

    公开(公告)号:US5340054A

    公开(公告)日:1994-08-23

    申请号:US839721

    申请日:1992-02-14

    IPC分类号: B64C23/06 B64C21/00

    CPC分类号: B64C23/06 Y02T50/162

    摘要: The oscillations found to occur in the cavities of an structural frame moving through a fluid are substantially eliminated by the adoption of perturbation elements located at the leading edge of the cavity and reflecting any remaining oscillations out of the cavity at the trailing edge. The perturbation elements may take the form of multiple pins of various shape and geometrical arrangement which prevents the generation and growth of vortices causing acoustic oscillations. The reflection of remaining oscillations out of the cavity may be accomplished by ramping the trailing edge of the cavity.

    摘要翻译: 发现发生在移动通过流体的结构框架的空腔中的振荡通过采用位于空腔的前缘处的扰动元件基本上消除,并将任何剩余的振荡反射出在后缘处的空腔。 扰动元件可以采取各种形状和几何布置的多个销的形式,其防止引起声振荡的涡流的产生和生长。 剩余振荡反射出空腔可以通过使空腔的后缘倾斜来实现。

    Fluid mixing device having a conical inlet and a noncircular outlet
    35.
    发明授权
    Fluid mixing device having a conical inlet and a noncircular outlet 失效
    流体混合装置具有锥形入口和非圆形出口

    公开(公告)号:US4957242A

    公开(公告)日:1990-09-18

    申请号:US180751

    申请日:1988-04-12

    IPC分类号: B01F5/00 B01F5/02 B05B7/02

    摘要: The invention is directed to a fluid mixing device in which a jet of firstluid is passed through a nozzle having a conical inlet section and a noncircular, elongated, exit section. The jet of first fluid mixes with a second fluid located downstream of the device. In operation, the intersection of the conical and elongated sections produces axial rotation in the first fluid. Intense, three-dimensional, axial and circumferential vortical structures are created. These structures then interact with the high modes of azimuthal instabilities that are common to the elongated configuration. The jet of first fluid evolves into two secondary jets, generating a double shear layer inside the flow. Highly efficient mixing of the fluids, in both the outside and inside (core) segments of the jet, is achieved within a relatively small mixing space.

    摘要翻译: 本发明涉及一种流体混合装置,其中第一流体的射流通过具有锥形入口部分和非圆形,细长的出口部分的喷嘴。 第一流体的射流与位于装置下游的第二流体混合。 在操作中,锥形细长部分的交点在第一流体中产生轴向旋转。 创建了强烈的三维,轴向和圆周涡旋结构。 这些结构然后与细长配置共同的方位不稳定性的高模式相互作用。 第一流体的射流发展成两个二次射流,在流动内部产生双剪切层。 在相对较小的混合空间内实现流体在喷射器的外部和内部(核心)段中的高效混合。