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Solution of vibration problems experienced with Howell-Bunger valves at Round Butte dam

Broehl, D.J. / Fisch, J.

Three 2.44-m Howell-Bunger valves (conical discharge jet) were installed at Round Butte power plant in Oregon, to serve as bypass to discharge up to 170 m³/s each under 94.5 m net head; unusual feature is that valves are submerged under tail-water head of about 10 m; operation resulted in severe vibration with eventual failure; air supply was ineffective against back pressure; model test program was initiated in manufacturer's laboratory and later at plant where steady fullhead and tail-water pressure were available; model testing resulted in satisfactory solution.

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Solution of vibration problems experienced with Howell-Bunger valves at Round Butte dam

Broehl, D.J. / Fisch, J.

Three 2.44-m Howell-Bunger valves (conical discharge jet) were installed at Round Butte power plant in Oregon, to serve as bypass to discharge up to 170 m³/s each under 94.5 m net head; unusual feature is that valves are submerged under tail-water head of about 10 m; operation resulted in severe vibration with eventual failure; air supply was ineffective against back pressure; model test program was initiated in manufacturer's laboratory and later at plant where steady fullhead and tail-water pressure were available; model testing resulted in satisfactory solution.

Solution of vibration problems experienced with Howell-Bunger valves at Round Butte dam

Broehl, D.J. / Fisch, J.

Three 2.44-m Howell-Bunger valves (conical discharge jet) were installed at Round Butte power plant in Oregon, to serve as bypass to discharge up to 170 m³/s each under 94.5 m net head; unusual feature is that valves are submerged under tail-water head of about 10 m; operation resulted in severe vibration with eventual failure; air supply was ineffective against back pressure; model test program was initiated in manufacturer's laboratory and later at plant where steady fullhead and tail-water pressure were available; model testing resulted in satisfactory solution.

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Title:

Solution of vibration problems experienced with Howell-Bunger valves at Round Butte dam

Additional title:

Int Congress Large Dams

Contributors:

Broehl, D.J. (author) / Fisch, J. (author)

Conference:

9th International Congress on Large Dams ; 1967 ; Turkey , Istanbul

Published in:

International Congress on Large Dams ; 2

Publication date:

1967

Size:

14 pages

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

Hydroelectric power plants

© Metadata Copyright Elsevier B. V. All rights reserved.

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