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27 条记录 (耗时 0.03 秒)

    Orthogonal parabolic reflector systems
    4.
    发明授权
    Orthogonal parabolic reflector systems 失效
    正交抛物面反射系统

    公开(公告)号：US5037191A

    公开(公告)日：1991-08-06

    申请号：US455518

    申请日：1989-12-21

    申请人： Dah Y. Cheng

    发明人： Dah Y. Cheng

    IPC分类号： G02B17/00 ,  F21V7/09 ,  G02B5/10

    CPC分类号： G02B5/10 ,  F21V7/09 ,  F21Y2103/00

    摘要： An Orthogonal Parabolic Reflector is generated by rotating a parabolic curve 90.degree. to the axis of symmetry passing through the focal point of the parabola. The Orthogonal Parabolic Reflector can concentrate a section of the linear source or sink on the axis of rotation to the focal point, resulting in integrating the intensity as a point source or sink at the focal point with almost no physical dimension effects.

    摘要翻译： 通过将抛物线曲线90°旋转到穿过抛物线焦点的对称轴，产生正交抛物面反射器。 正交抛物面反射器可以将线性源或接收器的一部分集中在焦点的旋转轴上，从而将焦点集成在焦点处的点源或接收器，几乎没有物理尺寸效应。

    Steam-injected free-turbine-type gas turbine
    5.
    发明授权
    Steam-injected free-turbine-type gas turbine 失效
    蒸汽喷射式自由涡轮式燃气轮机

    公开(公告)号：US4823546A

    公开(公告)日：1989-04-25

    申请号：US181198

    申请日：1988-04-13

    申请人： Dah Y. Cheng

    发明人： Dah Y. Cheng

    IPC分类号： F01K21/04 ,  F02C3/10 ,  F02C9/48

    CPC分类号： F02C3/10 ,  F01K21/047 ,  F02C9/48

    摘要： A steam-injected free-turbine type of gas turbine is disclosed. In order to avoid the necessity of redesigning the compressor/core turbine, the shaft of the core turbine is modified to provide additional load output. As steam is injected into the system the resulting excess power of the core turbine is taken out of the system by coupling the compressor output shaft with a load. Thus, the core turbine operates as a single shaft turbine in addition to the existing power turbine. A control provides control of the load output of the two turbine output shafts so that the compressor/turbine stays in the matched operating domain.

    摘要翻译： 公开了一种蒸汽注入的自由涡轮机类型的燃气轮机。 为了避免重新设计压缩机/核心涡轮机的必要性，改变了核心涡轮机的轴以提供额外的负载输出。 当蒸汽注入到系统中时，通过将压缩机输出轴与负载联接，将所产生的核心涡轮机的过剩功率从系统中取出。 因此，除了现有的动力涡轮机之外，核心涡轮也作为单轴涡轮机运行。 控制器提供对两个涡轮机输出轴的负载输出的控制，使得压缩机/涡轮机保持在匹配的操作区域中。

    Laminar flow elbow system and method
    6.
    发明授权
    Laminar flow elbow system and method 失效
    层压流体系统及方法

    公开(公告)号：US5197509A

    公开(公告)日：1993-03-30

    申请号：US534146

    申请日：1990-06-06

    申请人： Dah Y. Cheng

    发明人： Dah Y. Cheng

    IPC分类号： F15D1/04 ,  F16L43/00

    CPC分类号： F16L43/00 ,  F15D1/04 ,  Y10T137/0357 ,  Y10T137/0391

    摘要： A means and method of design and installation of a pre-rotator ahead of an elbow are disclosed in order to eliminate or reduce elbow-induced turbulence in pipe flows. Experimental verification was conducted, and noise and pressure loss for flow around the elbow can be substantially reduced.

    摘要翻译： 公开了一种在弯头之前设计和安装预旋转器的方法和方法，以便消除或减少管道流中的弯头引起的湍流。 进行了实验验证，可以大大减少肘管周围流动的噪声和压力损失。

    Method and apparatus for distillation
    9.
    发明授权
    Method and apparatus for distillation 失效
    蒸馏方法和装置

    公开(公告)号：US4476024A

    公开(公告)日：1984-10-09

    申请号：US406481

    申请日：1982-08-09

    申请人： Dah Y. Cheng

    发明人： Dah Y. Cheng

    IPC分类号： B01D67/00 ,  B32B27/08 ,  B01D13/00

    CPC分类号： B01D61/364 ,  B01D69/12 ,  B32B27/08 ,  Y10S159/27

    摘要： A composite membrane structure is used in a distillation apparatus and method. The composite membrane separates a distilland and a distillate, such as salt water and fresh water. The composite membrane comprises a thin lyophobic microporous layer or membrane and a thin lyophilic layer or membrane. Evaporation and condensation takes place within the micropores of the lyophobic membrane. The lyophilic layer prevents intrusion of distilland into the pores of the lyophobic layer.

    摘要翻译： 在蒸馏装置和方法中使用复合膜结构。 复合膜分离出馏出物和馏出物，如盐水和淡水。 复合膜包括薄的疏液微孔层或膜和薄的亲液层或膜。 蒸发和冷凝发生在疏液膜的微孔内。 亲液层防止蒸馏物侵入疏液层的孔中。

    Method for starting and operating an advanced regenerative parallel compound dual fluid heat engine-advanced cheng cycle (ACC)
    10.
    发明授权
    Method for starting and operating an advanced regenerative parallel compound dual fluid heat engine-advanced cheng cycle (ACC) 失效
    先进再生并联复合双流体热机 - 先进循环（ACC）的启动和运行方法

    公开(公告)号：US5233826A

    公开(公告)日：1993-08-10

    申请号：US942150

    申请日：1992-09-08

    申请人： Dah Y. Cheng

    发明人： Dah Y. Cheng

    IPC分类号： F01K21/04

    CPC分类号： F01K21/047 ,  Y02E20/14

    摘要： A method of operation of an Advanced Cheng Cycle heat engine comprising: (a) initializing start conditions in the gas turbine engine and the heat recovery steam generator with the control system; (b) setting the control valve means for idle flow condition of the heat engine; (c) pressurizing the drum with the compressed gas source to approximately the desired operating pressure of the heat recovery steam generator; (d) starting the gas turbine engine from idle to full load as limited by maximum allowed turbine inlet temperature; and (e) throttling second working fluid flow rate with the control valve means and shutting off the compressed gas source, after the sensor system indicates that heat recovery steam generator pressure is higher than compressor discharge pressure. Throttling is performed in accordance with the following operating parameters: (i) second working fluid temperature as injected into the turbine less than or substantially equal to first working fluid temperature at the compressor outlet, and (ii) maximization of heat recovery from the turbine exhaust for a given peak efficiency mixture ratio of second working fluid to first working fluid in the turbine, so that heat recovery exchanger pinch temperature is minimized.

    摘要翻译： 一种先进城循环热机的运行方法，包括：（a）利用控制系统初始化燃气轮机和热回收蒸汽发生器的起动条件; （b）设定用于所述热机的怠速状态的所述控制阀装置; （c）用压缩气体源将滚筒加压到热回收蒸汽发生器的大致期望的操作压力; （d）将燃气涡轮发动机从空载启动到满载，由允许的最大涡轮入口温度限制; 和（e）在传感器系统指示热回收蒸汽发生器压力高于压缩机排放压力之后，利用控制阀装置节流第二工作流体流量并关闭压缩气体源。 根据以下操作参数进行节流：（i）注入到涡轮机中的第二工作流体温度低于或基本等于压缩机出口处的第一工作流体温度，以及（ii）从涡轮机排气口最大化热回收 对于第二工作流体对涡轮机中的第一工作流体的给定峰值效率混合比，使得热回收交换器夹紧温度最小化。