压缩机防喘振控制阀
使用经过优化的费希尔防喘振阀门组件，为压缩机提供喘振保护，从而提高稳定性。
使用经过优化的费希尔防喘振阀门组件，为压缩机提供喘振保护，从而提高稳定性。
喘振被定义为离心压缩机达到峰值能力和最小流量限制时的工作点。当压缩机的增压压力高于压缩机的输出压力时，流体趋向于反向流动甚至流回到压缩机中。这样，增压压力就会下降，入口处的压力会增大，流动方向会再次反转。最终，当发生喘振时，压缩机将无法保持峰值能力，整个系统会变得不稳定。喘振还会导致压缩机过热并超过设备的最高允许温度，或者由于转子在作用侧与非作用侧之间来回移动而导致推力轴承损坏。
这些阀门可检测到过程压缩阶段何时即将发生喘振，并随即采取措施将工作点的运动向喘振线方向反转。这样可以减小增压压力、增大流经压缩机的流量，使工作条件趋于稳定。这通常是通过打开回收管路中的控制阀并通过吸气冷却器将排气送回到压缩机的入口而实现的。这样会增大压缩机入口处的体积流量，从而防止工作点出现喘振。
这些组件通常由控制阀、执行器、数字式阀门控制器以及流量放大器等其他配件组成。
双作用执行器能够让防喘振技术发挥出最高的性能。它可以在两个方向提供对称的性能，并达到最高的刚度和可控性。
止回阀可以在阀门离开行程限位器时提供全速性能，并在不到一秒钟的时间内达到所需的能力。
噪音和振动所产生的影响会进一步损坏压缩机并导致效率下降。
多路、多级阀芯能够将噪音级别降低 40 dBA 之多。激光切割的阀盘所形成的流动模式有助于确保实现可重复的降噪并减少管道振动。
抗振配件和管道有助于消除现场的故障
当预测何时需要进行维护或干预时，了解系统的行为至关重要。
在每次执行部分冲程测试时，使用仪表自动检查阀门状况，从而在阀门保持运行的情况下收集、查看和分析各种诊断信息且不会影响过程，例如阀门盘根摩擦、气体路径泄漏、阀门粘滞、执行器弹簧刚度和工作台设定等诊断信息。
The compressor anti-surge control valve is at the center of the anti-surge recycle loop and is integral to achieving reliable compressor operation and designed to prevent compressor surge events. Learn about the main components that make up this field-proven solution.
Learn how improving your compressor anti-surge control valve performance can impact the operation of your compressor system. This webinar discusses the Fisher™ ODV Solution for Compressor Anti-Surge and shows a demo of our NPS 12x20 high performance ODV package on a simulated compressor installation in the Emerson Innovation Center in Marshalltown, IA.
The compressor anti-surge control valve is at the center of the anti-surge recycle loop and is integral to achieving reliable compressor operation and designed to prevent compressor surge events. Learn about the main components that make up this field-proven solution.
Learn how improving your compressor anti-surge control valve performance can impact the operation of your compressor system. This webinar discusses the Fisher™ ODV Solution for Compressor Anti-Surge and shows a demo of our NPS 12x20 high performance ODV package on a simulated compressor installation in the Emerson Innovation Center in Marshalltown, IA.
The compressor anti-surge control valve is at the center of the anti-surge recycle loop and is integral to achieving reliable compressor operation and designed to prevent compressor surge events. Learn about the main components that make up this field-proven solution.
