Ways to increase the reliability and operating life of hydraulic turbine equipment when reconstructing hydroelectric stations

1996 ◽  
Vol 22 ◽  
pp. 112
Author(s):  
V Grigor'ev
Keyword(s):  
Hydraulic Turbine ◽  
Operating Life ◽  
Turbine Equipment

Hydraulic turbine equipment and tasks of its further improvement

1994 ◽  
Vol 28 (12) ◽  
pp. 693-695 ◽  
Author(s):  
V. D. Novozhenin ◽  
M. F. Krasil'nikov
Keyword(s):  
Hydraulic Turbine ◽  
Turbine Equipment

Methodology for reconstruction of hydraulic-turbine equipment at active HPP

2011 ◽  
Vol 44 (6) ◽  
pp. 429-433
Author(s):  
Sh. I. Abubakirov ◽  
I. P. Ivanchenko
Keyword(s):  
Hydraulic Turbine ◽  
Turbine Equipment

Experimental Investigation Of Double Precessing Vortex Rope Forming In Draft Tube Models

2015 ◽  
Vol 10 (2) ◽  
pp. 73-82
Author(s):  
Sergey Skripkin ◽  
Mikhail Tsoy ◽  
Sergey Shtork
Keyword(s):  
High Speed ◽  
Draft Tube ◽  
Hydraulic Turbine ◽  
Reynolds Numbers ◽  
Pressure Pulsations ◽  
Vortex Rope ◽  
Precessing Vortex Core ◽  
Turbine Equipment ◽  
Hydro Turbines ◽  
Design Pressure

This work is devoted to the experimental research of the flow structure in draft tube models of hydro turbines. Precessing vortex core was formed using fixed swirler in a flow such as observed in natural hydro turbines under off-design conditions. In laboratory conditions it has been able to find the effect of the transition between single- and double- vortex rope. Their frequency characteristics have been measured in the range of Reynolds numbers 5·104 –5·105 . Based on the analysis of data high-speed shooting the mechanism of complete transition between single and double vortex modes was investigated in detail. The investigation of this phenomenon is of particular interest for the design and operation of hydraulic turbine equipment due to off-design pressure pulsations with sudden changes in frequency and amplitude in a flow occurring.

Assessment of ability to varnish turbine oils

2020 ◽  
Vol 06 ◽  
pp. 28-33
Author(s):  
I.V. Mitin ◽  
◽  
I.R. Tatur ◽  
K.U. Smirnov ◽  
A.M. Suloev ◽  
...  
Keyword(s):  
Antioxidant Properties ◽  
Mechanism Of Formation ◽  
Critical Situation ◽  
Antioxidant Content ◽  
Turbine Equipment

The reasons for the formation of varnish deposits of turbine oils are determined. It is shown that the performance of turbine oils is determined by methods of ASTM D7843 (MPC) and ASTM D6971 (RUL) can be assessed, the process of formation of varnish deposits, the level of antioxidant properties, antioxidant content of, amend, and extend the oil change, and to predict critical situation in the operation of turbine equipment. The mechanism of formation of varnish deposits in turbine oils is proposed.

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