Suction connection for dual centrifugal compressor refrigeration systems
    1.
    发明申请
    Suction connection for dual centrifugal compressor refrigeration systems 有权
    双离心压缩机制冷系统的吸气连接

    公开(公告)号:US20040031286A1

    公开(公告)日:2004-02-19

    申请号:US10633844

    申请日:2003-08-04

    IPC分类号: F25B039/02 F25B041/06

    摘要: A dual centrifugal compressor refrigeration system has one evaporator for both compressors. The evaporator provides the centrifugal compressors with refrigerant vapor through separate suction connections for each compressor. Each suction connection has a protrusion that extends into the evaporator vessel to disturb the axial flow of refrigerant vapor in the evaporator vessel. The disturbance of the axial flow of refrigerant vapor in the evaporator vessel permits a surging compressor to draw refrigerant vapor in order to recover from the surge condition.

    摘要翻译: 双离心压缩机制冷系统具有用于两个压缩机的一个蒸发器。 蒸发器通过用于每个压缩机的单独的吸入连接为离心压缩机提供制冷剂蒸气。 每个抽吸连接件具有延伸到蒸发器容器中的突起,以扰乱制冷剂蒸气在蒸发器容器中的轴向流动。 在蒸发器容器中制冷剂蒸气的轴向流动的干扰允许喘振压缩机抽出制冷剂蒸气,以便从浪涌状态恢复。

    Stability control system and method for compressors operating in parallel
    2.
    发明申请
    Stability control system and method for compressors operating in parallel 失效
    压缩机并联运行的稳定性控制系统和方法

    公开(公告)号:US20040025523A1

    公开(公告)日:2004-02-12

    申请号:US10619640

    申请日:2003-07-15

    摘要: A control system is provided to maintain stable operating conditions for centrifugal compressors operating in parallel when one of the centrifugal compressors enters into an unstable operating condition. The control system determines an unstable operating condition in response to signals indicating the motor current or power consumption of each compressor and the position of the pre-rotation vanes of the compressors. Once an unstable operating condition is determined, the control system closes the pre-rotation vanes to each compressor until the unstable operating condition has been corrected.

    摘要翻译: 提供一种控制系统,用于当离心式压缩机之一进入不稳定的运行状态时,保持离心压缩机平行运行的稳定运行条件。 控制系统响应于指示每个压缩机的电机电流或功率消耗的信号和压缩机的预旋转叶片的位置来确定不稳定的操作条件。 一旦确定了不稳定的操作条件,则控制系统将预旋转叶片关闭到每个压缩机直到不稳定的操作条件被校正。