ANTI-SURGE SPEED CONTROL
    6.
    发明申请
    ANTI-SURGE SPEED CONTROL 审中-公开
    防刺速度控制

    公开(公告)号:US20130323082A1

    公开(公告)日:2013-12-05

    申请号:US13484846

    申请日:2012-05-31

    IPC分类号: F04D27/02

    CPC分类号: F04D27/0261

    摘要: The present invention relates to a method and control system to control the speed of a centrifugal compressor operating within a vacuum pressure swing adsorption process to avoid an operation at which surge can occur and directly driven by an electric motor that is in turn controlled by a variable frequency drive. In accordance with present invention an optimal speed for operation of the compressor is determined at which the compressor will operate along a peak efficiency operating line of a compressor map thereof. This speed is adjusted by a feed back speed multiplier when the flow or other parameter referable to flow through the compressor is below a minimum and a feed forward multiplier during evacuation and evacuation with purge steps that multiplies the feed back multiplier to increase speed of the compressor and thereby avoid surge.

    摘要翻译: 本发明涉及一种用于控制在真空变压吸附过程中操作的离心式压缩机的速度的方法和控制系统,以避免可能发生浪涌的操作并且由电动机直接驱动,电动机又由变量 变频器 根据本发明,确定压缩机操作的最佳速度,其中压缩机将沿其压缩机图的峰值效率操作线操作。 当流量或其他参数流过压缩机的流量或其他参数低于最小值时,通过反馈速度乘数来调整该速度,并且在排气和排气过程中的前馈乘法器与将反馈乘法器相乘以增加压缩机的速度的净化步骤 从而避免浪涌。

    CYCLIC ADSORPTION PROCESS USING CENTRIFUGAL MACHINES
    8.
    发明申请
    CYCLIC ADSORPTION PROCESS USING CENTRIFUGAL MACHINES 有权
    使用离心机的循环吸附过程

    公开(公告)号:US20130125746A1

    公开(公告)日:2013-05-23

    申请号:US13298680

    申请日:2011-11-17

    IPC分类号: B01D53/047

    摘要: A cyclic adsorption process is provided having pressurization and depressurization steps and driven by one or more centrifugal machines operating under acceleration and deceleration conditions wherein the deceleration rate of the machine is controlled to minimize power consumption and maximize the efficiency of the process. The operating speed of the centrifugal machine during deceleration is matched to the measured ratio pressure conditions so that the centrifugal machine arrives at its minimum operating speed near the point required to begin acceleration.

    摘要翻译: 提供具有加压和减压步骤并由一个或多个在加速和减速条件下操作的离心机驱动的循环吸附过程,其中控制机器的减速率以最小化功率消耗并使过程的效率最大化。 减速期间离心机的运行速度与测量的比例压力条件相匹配,使离心机达到其开始加速所需点附近的最小运行速度。

    ANTI-SURGE SPEED CONTROL FOR TWO OR MORE COMPRESSORS

    公开(公告)号:US20190010949A1

    公开(公告)日:2019-01-10

    申请号:US15645207

    申请日:2017-07-10

    摘要: The present invention relates to a method and control system to control the speed of centrifugal compressors operating within a vacuum pressure swing adsorption process to avoid an operation at which surge can occur and directly driven by an electric motor that is in turn controlled by a variable frequency drive, while subsequently operating the vacuum pressure swing process between set limits of highest adsorption and lowest desorption pressure. In accordance with present invention an optimal speed for operation of the compressor is determined at which the compressor will operate along a peak efficiency operating line of a compressor map thereof. This speed is adjusted by a feed back speed multiplier when the flow or other parameter referable to flow through the compressor is below a minimum and a feed forward multiplier during evacuation and evacuation with purge steps that multiplies the feed back multiplier to increase speed of the compressor and thereby avoid surge. The speed is then adjusted by a global speed factor which serves to adjust the average speed of the motors over all steps of the repeating cycle such that the process operates within high and low pressure limits.

    Cyclic adsorption process using centrifugal machines
    10.
    发明授权
    Cyclic adsorption process using centrifugal machines 有权
    循环吸附法采用离心机

    公开(公告)号:US08657918B2

    公开(公告)日:2014-02-25

    申请号:US13298680

    申请日:2011-11-17

    IPC分类号: B01D53/047

    摘要: A cyclic adsorption process is provided having pressurization and depressurization steps and driven by one or more centrifugal machines operating under acceleration and deceleration conditions wherein the deceleration rate of the machine is controlled to minimize power consumption and maximize the efficiency of the process. The operating speed of the centrifugal machine during deceleration is matched to the measured ratio pressure conditions so that the centrifugal machine arrives at its minimum operating speed near the point required to begin acceleration.

    摘要翻译: 提供具有加压和减压步骤并由一个或多个在加速和减速条件下操作的离心机驱动的循环吸附过程,其中控制机器的减速率以最小化功率消耗并使过程的效率最大化。 减速期间离心机的运行速度与测量的比例压力条件相匹配,使离心机达到其开始加速所需点附近的最小运行速度。