Mass flow measuring device
    7.
    发明授权
    Mass flow measuring device 失效
    质量流量测量装置

    公开(公告)号:US5423221A

    公开(公告)日:1995-06-13

    申请号:US912893

    申请日:1986-09-26

    IPC分类号: G01F1/84

    摘要: A conduit having two substantially parallel, flexible and continuous flow tubes fixedly mounted at their ends to a centrally positioned housing The ends of each flow tube positioned proximal to one another and to the center of gravity formed by the shape of the flow tube. Each flow tube substantially forming a "B" shape having a first loop, a connecting portion and a second loop. The first and second loops being symmetrical with respect to the connecting portion and extending laterally from the center of gravity at a greater distance than the displacement of the connecting portion to the center of gravity. The flow tubes being oscillated in opposing modes at the connecting portion so as to produce a measurable Coriolis reaction force by the fluid on the flow tubes. The vibration means being capable of selectively oscillating the flow tube at least one discrete resonant frequency higher than the fundamental resonance of the flow tube so as to create waves along the tube length and form nodal points which are substantially stantionary with respect to the vibrating flow tube. The nodes form free floating flexible joints within the continuous flow tube to separate the oscillation of a portion of the flow tube partially from the fixed mounting points which are typically subject to unwanted vibrational noise.

    摘要翻译: 具有两个基本上平行的,柔性的和连续的流管的导管,其固定地安装在其端部到中心定位的壳体。每个流管的端部彼此靠近并且由流管的形状形成。 每个流管基本上形成具有第一环的“B”形,连接部和第二环。 第一和第二回路相对于连接部分是对称的,并且以比连接部分到重心的位移更大的距离从重心横向延伸。 流管在连接部分以相反的模式振荡,以便通过流管上的流体产生可测量的科里奥利反作用力。 所述振动装置能够选择性地使所述流管振荡至少一个高于所述流动管的基本共振的离散谐振频率,以便沿着所述管的长度产生波浪并形成相对于所述振动流管基本上相对的节点 。 节点在连续流动管内形成自由浮动柔性接头,以将流动管的一部分的振荡部分地与通常受到不想要的振动噪声的固定安装点分开。

    Staged optimal externally-controlled systems and method thereof
    8.
    发明授权
    Staged optimal externally-controlled systems and method thereof 失效
    分阶段最优的外部控制系统及其方法

    公开(公告)号:US06605190B1

    公开(公告)日:2003-08-12

    申请号:US08801038

    申请日:1997-02-14

    IPC分类号: B01D342

    摘要: The method and system of the present invention is designed to minimize exergy consumption consistent with a given level of product purity. For example, in a distillation system, the design employs a plurality of thermostatted trays which are maintained at a sequence of temperatures specified by finding the optimal control for an irreversible thermodynamic process. The specified temperatures at each tray are achieved with the help of a tandem heat pump which works over the range of required temperatures and which delivers the specified heat demands.

    摘要翻译: 本发明的方法和系统被设计成使给定水平的产品纯度达到最小的能量消耗。 例如,在蒸馏系统中,该设计采用多个恒温托盘,其保持在通过找到不可逆热力学过程的最佳控制而指定的一系列温度。 每个托盘的指定温度是借助串联式热泵实现的,这种串联式热泵可在所需温度范围内工作,并提供特定的热量需求。

    Method and apparatus for measuring mass flow
    9.
    发明授权
    Method and apparatus for measuring mass flow 失效
    测量质量流量的方法和装置

    公开(公告)号:US5700957A

    公开(公告)日:1997-12-23

    申请号:US592389

    申请日:1996-02-01

    IPC分类号: G01F1/84 G01F1/78

    CPC分类号: G01F1/8413 G01F1/8477

    摘要: Apparatus for measuring mass flow of a fluid stream comprising inlet and outlet conduits for the fluid stream, at least one resilient flow tube having fixed mounting ends communicating with the inlet and outlet conduits, a vibrator for oscillating the flow tube transverse to the axis of the flow tube, sensors for generating signals corresponding to the oscillating motion of the flow tube and a signal processing unit for determining the mass flow from said signals on the basis of the Coriolis reaction force by the fluid against the flow tube. According to the invention the flow tube is formed as a symmetrical loop around the amount ends, said loop providing a change in the direction of flow which is greater than 360.degree., and vibrator is located on the flow tube at a point adjacent the mounting ends. Method for measuring mass flow of a fluid stream, wherein the said at least one flow tube is oscillated at a resonant frequency higher than the fundamental resonant frequency of the flow tube.

    摘要翻译: PCT No.PCT / HU94 / 00033 Sec。 371日期:1996年2月1日 102(e)日期1996年2月1日PCT 1994年8月3日PCT PCT。 公开号WO95 / 04259 日期1995年2月9日用于测量流体流的质量流量的装置,其包括用于流体流的入口和出口导管,至少一个弹性流管,其具有与入口和出口导管连通的固定安装端,振动器, 流体管的轴线,用于产生对应于流管的振荡运动的信号的传感器和用于基于流体对流管的科里奥利反作用力从所述信号确定质量流量的信号处理单元。 根据本发明,流管围绕数量端形成为对称环,所述环提供大于360°的流动方向的变化,并且振动器位于与安装端相邻的点处的流管上 。 用于测量流体流的质量流量的方法,其中所述至少一个流管以高于流管的基本共振频率的谐振频率振荡。

    Coriolis type apparatus for measuring mass flow of a fluid stream
    10.
    发明授权
    Coriolis type apparatus for measuring mass flow of a fluid stream 失效
    用于测量流体流的质量流量的科里奥利型装置

    公开(公告)号:US5627326A

    公开(公告)日:1997-05-06

    申请号:US318841

    申请日:1995-02-06

    IPC分类号: G01F1/84

    摘要: A Coriolis type apparatus for measuring mass flow of a fluid stream, comprising at least one flow conduit which is oscillated at a resonant frequency transverse to the direction of flow while said fluid flows therethrough, two sensors for generating analog signals corresponding to the motion of the flow conduit, and signal processing means for determining time difference between said analog signal, said signal processing means including means for converting said analog signals into series of digital signals and means to compute from said series of digital signals said time difference by using Fourier transformation. Each of the analog signals generated by the sensors is converted into a series of digital signals by an incremental type analog-digital converter having a comparator, an up-down counter and a digital-analog converter.

    摘要翻译: PCT No.PCT / HU93 / 00026 Sec。 371日期:1995年2月6日 102(e)日期1995年2月6日PCT 1993年4月26日PCT PCT。 第WO93 / 22629号公报 日期:1993年11月4日科里奥利型流体流的质量流量测量装置,包括至少一个在所述流体流过其中以横向于流动方向的共振频率振荡的流动管道的两个传感器,用于产生相应的模拟信号 以及用于确定所述模拟信号之间的时差的信号处理装置,所述信号处理装置包括用于将所述模拟信号转换为数字信号的装置的装置,以及从所述一系列数字信号计算所述时间差的装置 通过使用傅里叶变换。 由具有比较器,升降计数器和数模转换器的增量型模数转换器将由传感器产生的每个模拟信号转换成一系列数字信号。