Investigation of wet steam flow in LP steam turbine using a novel integrated probe: experimental results

• Autorzy: Wang, L. , Cai, X. , Ouyang, X.
• Języki publikacji: EN

Abstrakty

EN

In low-pressure (LP) steam turbine, the wetness fraction of steam causes dangerous erosion of turbine blades and decrease of turbine efficiency. In the study of wet steam flow, wetness, droplet size and velocity are of the main concern. These parameters are closely correlated to the vapour phase of the flow field and have to be measured simultaneously. Following this line, a novel integrated probe system has been successfully developed, based on light scattering technique, correlation theory and common methods for flow field measurement. By using this system, experiment has been performed in a 200 MW and a 350 MW condensing steam turbine. Part of the results are presented and some newly detected phenomena are put forward and discussed.

Słowa kluczowe

EN

flow field; LP turbine; probe; wet steam

• Czasopismo: Archives of Thermodynamics
• Rocznik: 2002
• Tom: Vol. 23, no 4
• Strony: 49-57
• Opis fizyczny: Bibliogr. 5 poz.,

Twórcy

autor

Wang, L.

• College of Power Engineering, University of Shanghai for Science Technology, Shanghai, Chiny

autor

Cai, X.

• College of Power Engineering, University of Shanghai for Science Technology, Shanghai, Chiny

autor

Ouyang, X.

• College of Power Engineering, University of Shanghai for Science Technology, Shanghai, Chiny

Bibliografia

• [1] PETR V., ET AL.: Development and design of extinction probes for the wet steam diagnostics, Proc. of the 10th Conf. on Steam and Gas Turbines, Karlove Vary, Czech Republic, 1994, 213-218.
• [2] WANG NAINING ET AL.: Optical measurement of wet steam in turbines, ASME J. of Eng. for Gas Turbines and Power, Vol. 120 (1998), 867-871.
• [3] SEIBOLD S., STETTER H.: Investigation condensation processes in low pressure turbines with an improved optical probe, Proc. of JPGC'01, 2001 ASME Int. Joint Power Gen. Conf., JPGC2001/PWR-19120, New Orleans, USA, 2001, 1-10.
• [4] CAI X., WANG L.: A novel integrated probe system for measuring the two phase wet steam flow in steam turbine, J. Thermal Science, Vol. 10 (2001), No. 2, 123-126.
• [5] WANG L., CAI X., OUYANG X.: The measurement of the velocity of coarse water in wet steam flow in LP turbine, Proc. of the 10th Conf. of Chinese Eng. Thermal Physics Soc., Qingdao, China, 2001, 46-51.