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    • 43. 发明申请
    • METHOD FOR THE PREDICTION OF SURGE IN A GAS COMPRESSOR
    • 在气体压缩机中预测浪涌的方法
    • WO2017029131A1
    • 2017-02-23
    • PCT/EP2016/068760
    • 2016-08-05
    • SIEMENS AKTIENGESELLSCHAFT
    • KRISHNABABU, Senthil
    • G06F17/50F01D1/02F04D27/00
    • G06F17/5018F04D27/001F05D2260/81F05D2260/821F05D2270/101G06F2217/16
    • A computer implemented method (100) for the prediction of the surge point of a compressor (14) comprises the following steps: - generating (110) a plurality of meshes: - a compressor inlet mesh (220), - at least a compressor rotor stage mesh (225), - a compressor outlet mesh (235), representing a plurality of exit guide vanes (236) and an exit nozzle (37) and extending up to a final nozzle exit area (240), - assembling (120) the plurality of meshes (220, 225, 235) to obtain the CFD domain (250), - specifying boundary conditions (130) of the computational domain (250), - specifying atmospheric pressure conditions (140) at the final nozzle exit area (40), - computing (150) compressor inlet mass flow rate and compressor pressure ratio, - if the numerical stability limit is not reached then: - decreasing (180) dimensions (A1) of the final nozzle exit area (240), - generating again (190) the compressor outlet mesh (235), - repeating said steps of specifying atmospheric pressure (140) at the final nozzle exit area (240), said step of computing (150) and said step of checking (160).
    • 一种用于预测压缩机(14)的喘振点的计算机实施方法(100)包括以下步骤: - 产生(110)多个网格: - 压缩机入口网(220), - 至少一个压缩机转子 (225), - 表示多个出口导叶(236)和出口喷嘴(37)并延伸到最终喷嘴出口区域(240)的压缩机出口网(235), - 组装(120) 多个网格(220,225,235)以获得CFD域(250), - 指定计算域(250)的边界条件(130), - 指定最终喷嘴出口区域(140)处的大气压力条件(140) - 计算(150)压缩机入口质量流量和压缩机压力比, - 如果未达到数值稳定性极限则: - 最终喷嘴出口区域(240)的减小(180)尺寸(A1), - 产生 再次(190)压缩机出口网孔(235), - 重复所述步骤,以指定大气压力(140) 最终喷嘴出口区域(240),所述计算步骤(150)和所述检查步骤(160)。
    • 45. 发明申请
    • METHOD FOR AND ARRANGEMENT FOR MEASURING SHROUDED BLADE INTERLOCK WEAR
    • 用于测量切割叶片互锁磨损的方法和布置
    • WO2016055328A1
    • 2016-04-14
    • PCT/EP2015/072570
    • 2015-09-30
    • SIEMENS AKTIENGESELLSCHAFT
    • BATT, Stephen
    • F01D5/22
    • F01D5/225F05D2230/72F05D2240/307F05D2260/36F05D2260/80F05D2260/821F05D2260/83
    • A pair of circumferentially adjacent blades (80) for a rotor assembly, each blade comprises a root portion (50), an aerofoil (54) and a shroud (56). Each shroud (56) defines at least one boss (84, 90) having an interlock surface (86, 94) and the interlock faces of the adjacent blades are arranged to contact one another in sliding frictional contact to damp relative movement between the adjacent blades. Each boss (84, 90) further defines a measurement surface (88, 92), the measurement surfaces (88, 92) are arranged parallel to one another. A method of maintaining the pair of circumferentially adjacent blades comprises the steps of assembling the blades adjacent one another, measuring a parameter between the two measurement surfaces to obtain a measurement parameter, operating the blades, measuring the parameter between the two measurement surfaces (88, 92) to obtain a second parameter, and calculating the difference between the measurement parameter and the second parameter to give a wear value for the pair of blades. Where the wear value is less than a first predetermined value, scheduling a maintenance event or the wear value is greater than the first predetermined value, servicing at least one of the blades.
    • 用于转子组件的一对周向相邻的叶片(80),每个叶片包括根部(50),翼型(54)和护罩(56)。 每个护罩(56)限定具有互锁表面(86,94)的至少一个突起(84,90),并且相邻刀片的互锁面被布置成以滑动摩擦接触彼此接触以阻止相邻刀片之间的相对运动 。 每个凸台(84,90)进一步限定测量表面(88,92),测量表面(88,92)彼此平行地布置。 保持一对周向相邻的刀片的方法包括以下步骤:将刀片彼此相邻地组装,测量两个测量表面之间的参数以获得测量参数,操作刀片,测量两个测量表面(88, 92)以获得第二参数,并且计算测量参数和第二参数之间的差以给出该对刀片的磨损值。 在磨损值小于第一预定值的情况下,调度维护事件或磨损值大于第一预定值,维护至少一个叶片。