Intake tower




Intake tower connected to the shore with a service bridge at the Boondooma Dam, Australia


An intake tower or outlet tower[1] is a vertical tubular structure with one or more openings used for capturing water from reservoirs and conveying it further to a hydroelectric or water-treatment plant.[2]


Unlike spillways, which release water from the reservoir only in emergency conditions, intake towers are intended for the reservoir's regular operation, conveying clean, debris-free water for further use.[2]




Contents





  • 1 Construction

    • 1.1 Draw-off tower



  • 2 References


  • 3 See also




Construction


An intake tower is typically made from reinforced concrete, with foundations laid in the river or lake bed. It has at least one water-collecting opening at the top, and may have additional openings along its height, depending on the purpose: towers for hydroelectric plants typically have only one inlet, while those in water-processing plants have multiple draw-off inlets. Near the bottom of the tower, depending on the dam construction and plant location, a horizontal or slanted outlet conduit takes the water from the tower into the plant.[1]


The most convenient location for an intake tower is in the proximity of the processing plant. In artificial lakes, those are typically placed near the dam. Lake bed near the dam also provides sufficient water depth to ensure substantial supply to the towers throughout the year, thus the exposed towers can be regularly seen along the dams.


When built near the shore, an intake tower is equipped with a service bridge, used to gain access for maintenance.



Draw-off tower


Draw-off towers are intake towers specialized for drinking water reservoirs. They have multiple openings at various depths, typically equipped with valves, allowing drawing water only from the level where it is of highest quality.[1]



References




  1. ^ abc "Spillways & Outlets - Outlet Towers". British Dam Society. 2010. Retrieved 2017-03-02..mw-parser-output cite.citationfont-style:inherit.mw-parser-output qquotes:"""""""'""'".mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em


  2. ^ ab "What are Intake Structures?". TheConstructor.org. Retrieved 2017-03-02.




See also




  • Culvert

  • Fish screen

  • Gatehouse (waterworks)




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