Analysis of the operating conditions of a hydraulic turbine of the bulb-type

In the last decades we have witnessed a technological advance and the search for 4.0 technologies, in this scenario, one of the most important topics to promote a good performance in the production of equipment is the monitoring of operation through preventive maintenance, especially for large industrial enterprises. In this article we present a dynamic test and an analysis of the operating conditions of a hydraulic turbine of the bulb-type operating with a production level of 70 MW. The results demonstrate the vibrations at different points of the equipment and the frequency of turning of the blades. Through these results it was possible to demonstrate the operating condition of the device.

Optimization of an Economical Medium Composition For The Coculture of Clostridium Butyricum And Bacillus Coagulans

Clostridium butyricum is a spore-forming probiotic existing in the intestines of humans and animals which can promote the enhancement of beneficial bacteria and maintain intestinal microecological balance. However, it is difficult to improve the production level of C. butyricum by conventional fermentation process. In this study, a co-fermentation process of C. butyricum DL-1 and Bacillus coagulans ZC2-1 was established to improve the viable counts and spore yield of C. butyricum, and the formula of coculture medium was optimized by flask fermentation. The results showed that the optimum medium composition is bran 10 g/L, corn steep powder 15 g/L, peptone 15 g/L, K2HPO4 1 g/L and MnSO4 0.5 g/L. Cultured stationarily in the optimal medium for 36 h, the number of viable bacteria of C. butyricum DL-1 reached 1.5×108 CFU/mL and the spore forming rate was 92.6%. The results revealed an economical and effective medium composition for the coculture of C. butyricum and B. coagulans. The co-fermentation process established in this study provides a new fermentation mode for the industrial production of other absolute anerobic bacteria.