Strength analysis of penstock bifurcations in hydropower plants

• Autorzy: Adamkowski A. , Kwapisz L.
• Języki publikacji: EN

Abstrakty

EN

The strength analysis of penstock bifurcation in hydropower plants is discussed in the present paper. The analysis consists of determining the maximal internal pressure, (e.g. during turbine load rejection), stress analysis of the pipeline shell for assumed loading and assumed or determined material properties. The investigation results can be helpful when determining the proper rate of the flow cut-off and recommending the strengthening precautions to be applied in places of maximum stress concentration in order to prevent future penstock ruptures.

Słowa kluczowe

EN

water turbines; hydraulic transients; stress concentrations; reinforcement of penstock bifurcation

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN
• Czasopismo: Transactions of the Institute of Fluid-Flow Machinery
• Rocznik: 2004
• Tom: nr 115
• Strony: 113--124
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Adamkowski A.

• The Szewalski Institute of the Fluid Flow Machinery of the Polish Academy of Sciences, 80-952 Gdańsk, ul. J. Fiszera 14, PO Box 621, Poland

autor

Kwapisz L.

• The Szewalski Institute of the Fluid Flow Machinery of the Polish Academy of Sciences, 80-952 Gdańsk, ul. J. Fiszera 14, PO Box 621, Poland

Bibliografia

• [1] Adamkowski, A.: Case Study: Lapino Powerplant penstock failure, ASCE J. of Hydraulic Eng., July 2001, Vol. 127, No. 7, 547-555
• [2] Adamkowski, A. (1996): Theoretical and experimental investigations of waterhammer attenuation by means of cut-off and by-pass valves in pipeline systems of hydraulic turbomachines, Zeszyty Naukowe IMP PAN, No.461/1423/96, Gdask (in Polish)
• [3] Adamkowski, A., Lewandowski, M.: Flow conditions in penstocks of a pumpstorage power plant operated at a reduced head water level, Int. Conf. HYDROTURBO’2001, Podbanske (Slovakia), 9-11 October 2001, 317-328.
• [4] ASCE Task Committee on Guidelines of Aging Penstocks: Guidelines for Evaluating Aging Penstocks, ASCE, New York 1995, 175.
• [5] ASCE Task Committee on Inspection and Monitoring of In-Service Penstocks: Guidelines for Inspection and Monitoring of In-Service Penstocks, Reston 1998, 256.
• [6] ASCE Task Committee on Manual of Practice for Steel Penstocks: Steel Penstocks, Manuals and Reports on Engineering Practice No. 79, ASCE, New York 1993, 432.
• [7] Beczkowski, W.: Power industry pipelines. Part I. Design and calculations, Ed. WNT (Wydawnictwo Naukowo-Techniczne), 2nd Ed., Warsaw 1964, 361 (in Polish).
• [8] Kwapisz, L., Adamkowski, A.: Stress concentration in pipeline T-junction,Proc. of Techno-Sci. Conf. HYDROFORUM’2000, Czorsztyn 18-20 October 2000, Wyd. IMP PAN, 177-182 (in Polish).
• [9] Meystre, N.: 100 Years of Swiss penstock engineering for hydropower stations, Escher Wyss News, Vol. 52, No. 2, 16-34.
• [10] Technical Inspection Office: Technical inspection requirements. Pressure devices. Strength calculations, DT-UC-90/W0-0, Ed. Wyd. Poligraf., Bydgoszcz 1991, 149 (in Polish).