摘要：以某重型燃气轮机用17级轴流压气机为研究对象,建立了一种可用于多级轴流压气机特性预估的损失和落后角模型。运用流线曲率法计算得到了不同转速下的压气机特性变化曲线,并将其与全三维数值模拟结果进行了对比,验证了该模型在大流量多级轴流压气机特性预估方面的有效性。通过对设计点各级加工量、总压升分布以及各叶排落后角、效率沿径向分布的对比,验证了该模型在计算大流量多级轴流压气机设计点各级性能参数分布以及各叶排气动参数分布方面的可靠性。

摘要：为解决某燃气轮机六级轴流压气机试验件设计过程中面临的级数多、迭代多、人员缺乏的困境,进行了WAVE系统工程在该试验件上的应用尝试。针对结构方案特征和整个寿命周期的设计流程,确定了六级试验件的模块划分,初步制定了主要零件的设计方法,并以0级可调导叶为例开展了具体的结构设计。实践结果表明该设计方法特别适用于级数比较多、结构形式雷同的多级轴流压气机的设计,增强了设计过程、设计迭代、设计输出等各环节的适应性和关联性,可以解决本压气机试验件面临的困境。

摘要：The inlet attack angle of rotor blade reasonably can be adjusted with the change of the stagger angle of inlet guide vane (IGV); so the efficiency of each condition will be affected. For the purpose to improve the efficiency, the DSP (Digital Signal Processor) controller is designed to adjust the stagger angle of IGV automatically in order to optimize the efficiency at any operating condition. The A/D signal collection includes inlet static pressure, outlet static pressure, outlet total pressure, rotor speed and torque signal, the efficiency can be calculated in the DSP, and the angle signal for the stepping motor which control the IGV will be sent out from the D/A. Experimental investigations are performed in a three-stage, low-speed axial compressor with variable inlet guide vanes. It is demonstrated that the DSP designed can well adjust the stagger angle of IGV online, the efficiency under different conditions can be optimized. This establishment of DSP online adjustment scheme may provide a practical solution for improving performance of multi-stage axial flow compressor when its operating condition is varied.