Steam cooled system in combined cycle power plant
CA 2260415 C · Owner: Akagi, Koichi · Inventors: Takahama, Masayuki; Yasuraoka, Jun; Tanaka, Tomoka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Gas turbine steam cooled system is constructed such that high temperature portion outlet steam temperature is maintained to predetermined value without cooling steam pressure becoming lower than pressure in gas turbine cylinder. Steam coming from intermediate pressure superheater 10 of waste heat recovery boiler 2 is led into high temperature portion 8 of gas turbine for cooling thereof . Temperature of cooling steam at outlet of the high temperature portion 8 is detected by high temperature portion outlet steam temperature detector 15 and signal thereof is sent to lower value selector 19 via temperature controller 11. Pressure in gas turbine cylinder is detected by gas turbine cylinder …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed January 27, 1999 and granted July 23, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.