File:Construction activities at Larner-Johnson flow control valve and scroll case in power generating unit no 1, Gorge Dam Powerhouse (SPWS 224).jpg
Construction_activities_at_Larner-Johnson_flow_control_valve_and_scroll_case_in_power_generating_unit_no_1,_Gorge_Dam_Powerhouse_(SPWS_224).jpg (768 × 503 pixels, file size: 65 KB, MIME type: image/jpeg)
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Summary edit
English: Construction activities at Larner-Johnson flow control valve and scroll case in power generating unit no. 1, Gorge Dam Powerhouse, August 10, 1923 ( ) | ||||||||||||||||||||||||
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Photographer |
Unknown authorUnknown author |
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Title |
English: Construction activities at Larner-Johnson flow control valve and scroll case in power generating unit no. 1, Gorge Dam Powerhouse, August 10, 1923 |
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Description |
English: Photographs of the Skagit River Hydroelectric Project constructed between 1918-1961.
The Gorge Dam and Powerhouse were built by Seattle City Light and completed in September of 1924. Water flows from the penstock through the dam and into a spiral "scroll case". Directed through slots on the inner diameter of the scroll case the water falls through the turbine, causing it to spin. Finally the water enters the "draft tube". The larger diameter of this steel outlet tube slows the water before it exits the dam on the downstream side. A Larner-Johnson valve is used to control the outflow of water. Caption on image: Johnson Valve and Scross Case, Unit #1, Gorge Plant. 8-10-23. E-500 PH Coll 45.1-52b
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Depicted place | Gorge Dam | |||||||||||||||||||||||
Date | Taken on 10 August 1923 | |||||||||||||||||||||||
Medium |
English: silver gelatin, b&w |
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Collection |
institution QS:P195,Q219563 |
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Permission (Reusing this file) |
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Order Number InfoField | WWDL0370 |
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current | 16:26, 16 July 2021 | 768 × 503 (65 KB) | BMacZeroBot (talk | contribs) | Automatic lossless crop (watermark) | |
16:26, 16 July 2021 | 768 × 533 (68 KB) | BMacZeroBot (talk | contribs) | Batch upload (Commons:Batch uploading/University of Washington Digital Collections) |
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