The Influence of Pressure Pipe Diameter and Orifice Size of Surge Chamber Optimization on the Pressure at Volute

Abstract:

For a long-distance convey tunnel hydropower station, the changes of its convey tunnel diameter will impact on the pressure at the turbine volute, due to the influence of upper room of surge chamber, surge pressure is difficult to be the controlling value of the pressure at volute, the results also indicate that the influence of pressure pipe diameter on the pressure is more significant than the diversion tunnel diameter. This paper focuses on the pressure pipe diameter by the calculation of a numerical example, the increasing of the pressure at volute caused by the reduction of pressure pipe diameter can be adjusted for security requirements by optimizing the orifice size of surge chamber. Combined with the calculation of the combinational conditions, optimization results are satisfactory. That will reduce the investment of pressure pipe, so it has a certain reference value to the project.

• Periodical: Advanced Materials Research (Volumes 960-961)
• Pages: 534-538
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.960-961.534
• Online since: June 2014
• Authors: Peng Yang, Jian Zhang, Sheng Chen, Di Miao
• Keywords: Pressure Pipe Diameter, Size of Orifice, Upper Room of Surge Chamber, Volute Pressure

References

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