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检测部件应力

检测部件应力

Torque Talk November 2012

Determining Stresses on Life-Limited Components
检测部件应力

    一个TorqueTtrak10K用户在一个海湾沿岸炼油厂处理压缩机的问题。压缩机组用同步电机驱动,在他们的应用中,瞬态启动时,扭矩脉冲从120Hz到0Hz变化。系统加速时,扭振现象明显。像这样的谐振会对机械组件产生应力,可能会超过其疲劳耐久极限。
A TorqueTrak 10K user in a Gulf Coast refinery was having issues with their compressor train. The compressor train uses a synchronous motor drive in a hard start application. In that application torque pulses occur from 120 Hz to 0 Hz during the transient start-up. When accelerating up to synchronous speed the system passed through torsional resonances. A resonant condition like this creates stress in machinery components that can exceed their endurance limits for fatigue.
     

    客户发现,有必要使用有限元计算机建模分析一下这些应力。然后,他们用这一信息来判定系统启动时的安全系数。通常机组组件的机械寿命都是有限的。利用临时安装的torquetrak10K,用户能够准确地测量组件的扭矩。这验证了计算机模型,同时在系统操作过程中消除了客户对组件进一步损坏的担心。
The customer found it necessary to analyze these stresses using finite element computer modeling. They then used that information to determine a safe number of system starts. Often in this arrangement, some components in the machinery train are life-limited. By temporarily installing the TorqueTrak 10K, the user was able to accurately determine the torques and stresses of the life-limited components. This validated the computer model and allowed the customer to operate the system without concern for further damage. 
     

   TorqueTak10K节省了时间和金钱,避免过多的系统维护和过早更换部件的费用。

The TorqueTrak 10K saved the client time and money by avoiding excessive system repairs and the cost of replacing components prematurely.
   

    这是一个很好的例子,在故障诊断的过程中使用扭矩仪测量数据,提高日常工作效率。

Here is a great example of using live torque measurement data in the error detection process to improve daily operation.
    
   如果您有好的应用或成功案例涉及到TorqueTrak仪器,并愿意与大家分享,请联系我们,谢谢您的关注。
If you have a good application or success story involving the TorqueTrak instruments that you would like to share in this newsletter, please send it to me for consideration. 
    

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