压电微型鼓风机
    1.
    发明公开

    公开(公告)号:CN102057163A

    公开(公告)日:2011-05-11

    申请号:CN200980121349.8

    申请日:2009-06-01

    CPC classification number: F04B45/047 F04B2201/0806 F04B2201/12

    Abstract: 本发明提供一种可得到良好的鼓风机特性且使其小型化的压电微型鼓风机。通过以开口部(31)为中心在其周围设置间隔部(33),从而在与振动板(50)的中央部对应的鼓风机室(4)的部位形成共振空间(34),并将共振空间(34)的大小设定成使得振动板(50)的驱动频率和共振空间(34)的赫姆霍尔兹共振频率对应。在间隔部(33)和振动板(50)之间,形成有当振动板位移时使其不会相互接触的间隙δ。可利用空气共振以力图实现流量增大。

    一种泥浆脉冲信号泵噪声实时去除方法

    公开(公告)号:CN106089188A

    公开(公告)日:2016-11-09

    申请号:CN201610388971.7

    申请日:2016-06-02

    CPC classification number: E21B47/18 E21B21/08 F04B53/001 F04B2201/12

    Abstract: 本发明公开了一种泥浆脉冲信号泵噪声去除方法,包括以下步骤,步骤1采用转速传感器测量泥浆泵曲轴转速;采用压力传感器检测钻井液压力信号并将其转换成数字信号;步骤2利用测得的泥浆泵曲轴转速计算泵噪声的瞬时基频;步骤3采用瞬时基频与钻井液压力数字信号计算泵噪声谐波的幅值与相位;步骤4采用泵噪声谐波频率、幅值与相位重构泥浆脉冲信号泵噪声,采用钻井液压力数字信号直接减去重构的泵噪声实现泵噪声的实时去除。

    压电微型鼓风机
    5.
    发明授权

    公开(公告)号:CN102057163B

    公开(公告)日:2013-10-30

    申请号:CN200980121349.8

    申请日:2009-06-01

    CPC classification number: F04B45/047 F04B2201/0806 F04B2201/12

    Abstract: 本发明提供一种可得到良好的鼓风机特性且使其小型化的压电微型鼓风机。通过以开口部(31)为中心在其周围设置间隔部(33),从而在与振动板(50)的中央部对应的鼓风机室(4)的部位形成共振空间(34),并将共振空间(34)的大小设定成使得振动板(50)的驱动频率和共振空间(34)的赫姆霍尔兹共振频率对应。在间隔部(33)和振动板(50)之间,形成有当振动板位移时使其不会相互接触的间隙δ。可利用空气共振以力图实现流量增大。

    Method for detecting pump-off of a rod pumped well
    7.
    发明授权
    Method for detecting pump-off of a rod pumped well 失效
    检测抽油杆抽油的方法

    公开(公告)号:US5237863A

    公开(公告)日:1993-08-24

    申请号:US802799

    申请日:1991-12-06

    Inventor: Cleon L. Dunham

    CPC classification number: F04B49/02 E21B47/0006 E21B47/0008 F04B2201/12

    Abstract: A method for monitoring a rod pumped well and detecting when the well is pumped off. The method utilizes the measured rod load and position for each stroke to set load limits and position limits. The load limits and position limits are set as predetermined percentages of the difference between the maximum and minimum measured rod load and position. The area within the thus determined load and position limits is determined to detect when the well has pumped-off.

    Abstract translation: 一种用于监测杆抽取井并检测井何时抽出的方法。 该方法利用测量的杆载荷和每个行程的位置来设定载荷极限和位置限制。 负载限制和位置限制设置为最大和最小测量的杆载荷和位置之间的差的预定百分比。 确定如此确定的负载和位置限制内的区域以检测井何时抽出。

    Piezoelectric microblower
    8.
    发明授权
    Piezoelectric microblower 有权
    压电微型鼓风机

    公开(公告)号:US08684707B2

    公开(公告)日:2014-04-01

    申请号:US12959462

    申请日:2010-12-03

    CPC classification number: F04B45/047 F04B2201/0806 F04B2201/12

    Abstract: A piezoelectric microblower includes a vibrating plate including a piezoelectric element and arranged to be driven in a bending mode by applying a voltage of a predetermined frequency to the piezoelectric element, and a blower body arranged to fix both ends or a periphery of the vibrating plate and to define a blower chamber between the blower body and the vibrating plate, an opening being provided in a portion of the blower body facing a central portion of the vibrating plate. In a portion of the blower chamber corresponding to the central portion of the vibrating plate, a partition is provided around the opening and a resonance space is defined inside of the partition. A size of the resonance space is set such that a driving frequency of the vibrating plate and a Helmholtz resonance frequency of the resonance space correspond to each other.

    Abstract translation: 一种压电微型鼓风机包括:振动板,其包括压电元件,并配置为通过向压电元件施加预定频率的电压而以弯曲模式驱动;以及鼓风机主体,其布置成将振动板的两端或周边固定,以及 在所述鼓风机主体和所述振动板之间限定鼓风机室,所述鼓风机主体的面向所述振动板的中心部分的部分设置有开口。 在对应于振动板的中心部分的鼓风机室的一部分中,在开口周围设置隔板,并且在隔板内限定共振空间。 谐振空间的大小被设定为使得振动板的驱动频率和谐振空间的亥姆霍兹共振频率彼此对应。

    Marine steering system having dual hydraulic and electronic output
    9.
    发明授权
    Marine steering system having dual hydraulic and electronic output 有权
    船用转向系统具有双液压和电子输出

    公开(公告)号:US06564739B2

    公开(公告)日:2003-05-20

    申请号:US09931745

    申请日:2001-08-20

    Applicant: Peter Doetsch

    Inventor: Peter Doetsch

    Abstract: A marine steering system operable in either power steering or manual hydraulic modes. The system employs a modified helm pump having a single rotatable input shaft connectable to a steering wheel and dual hydraulic and electronic output. An encoder, such as an optical incremental encoder or hall effect device, is mechanically coupled to the input shaft for generating an electronic steering control signal representative of the change in position of the steering wheel. In the power steering mode, the electronic steering signal is processed by an amplifier controlling the operation of an auxiliary pumpset connected to the rudder steering cylinder. A bypass manifold disposed between the helm pump and the steering cylinder disables the hydraulic steering system in the power steering mode. In the event of power failure, the bypass manifold valves are opened and the system automatically switches to manual hydraulic steering.

    Abstract translation: 可在动力转向或手动液压模式下操作的船用转向系统。 该系统采用改进的舵泵,其具有可连接到方向盘的单个可旋转输入轴和双液压和电子输出。 诸如光学增量编码器或霍尔效应装置的编码器机械地联接到输入轴,以产生代表方向盘位置变化的电子转向控制信号。 在动力转向模式中,电子转向信号由控制连接到方向舵缸的辅助泵组的操作的放大器进行处理。 设置在舵泵和转向缸之间的旁通歧管在动力转向模式下禁止液压转向系统。 在断电的情况下,旁路歧管阀打开,系统自动切换到手动液压转向。

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