3 results about "Flow curve" patented technology

The present application relates to the technical field of device life prediction, and more particularly to a device life prediction method and system based on working state change curve, the present application proposes the following scheme, by acquiring the working state change curve of the device in the working process, the resampling of the flow curve is realized based on the cumulative volume mapping, the hysteresis back scanning is carried out in the neighborhood of the candidate boundary point, the final boundary point is determined, and the updated equivalent window is constructed. Further, according to the volume difference between the plurality of updated equivalent windows, correction is carried out, when the difference is within the tolerance range, it is directly used, otherwise a correction factor is introduced to correct the updated window, and the self-cleaning recovery characteristics of the device during the cycle switching are combined to compensate, so that the updated equivalent window more in line with the actual situation is obtained. The attenuation and recovery process of the device is accurately characterized, and reliable basis is provided for device life prediction and operation and maintenance strategy.

The application provides a kind of liquid food straw sucking difficulty prediction method based on rheological test, the characteristic flow curve of liquid food sample is measured by steady flow test, respectively Carreau-Yasuda model or Casson model (if it is yield type fluid) fitting is carried out, and the predicted flow Q of straw is calculated c , then Herschel-Bulkley model fitting is carried out, and the consistency index K h , power law index n, Herschel-Bulkley yield stress τ h (if it is yield type fluid) is obtained.According to the equation of pipe flow flow, τ R Is calculated and substituted into Herschel-Bulkley model, and the apparent viscosity corresponding to shear rate is obtained, then the prediction model is constructed to predict the liquid food straw sucking difficulty, replace the traditional sensory evaluation method, and provide new ideas for food enterprise research and development decision.