Development of Stem Temperature Control System on Marine Reheat Boiler

概要

論文の詳細を見る
Recently, adoption of high performance reheat turbine plants is increasing for the huge ships. In our company, KAWASAKI UFR type marine reheat boiler has been developed for such as the KAWASAKI UR plant. This paper discusses about the outline of design and actual experiences of our steam temperature control (STC) system.<BR>UFR boiler is constituted of single radient furnace and three gas paths system where gas passage is divided by partition water walls into a superheater path, a reheater path and a by-pass economizer path with control dampers arranged at each outlet of the paths. In reheat condition, both the superheater and reheater steam temperatures are controled by three dampers, and in non-reheat condition superheater steam temperature is controled by operating the by-pass damper.<BR>The protection of reheater from overheating when there is no reheat steam flow through the reheater during astern or port use condition is carried out by adoption of the double shut dampers which shut out the gas leakage through reheater path.<BR>At the designing of this STC. system, we take into consideration of the independent control of the superheater and reheater temperature without interaction and the system matching to the boiler and turbine operation. We hereupon introduce two policies of "Non-interacting control to load disturb-ances" and. "Non-interacting control to set point changes of steam temperature" for the first item. And also we provide the suitable sequential and program control in the case of changing over between reheat and non-reheat condition for the second item. In actual operation of this boiler, highly satisfactory control results have been obtained.
公益社団法人日本マリンエンジニアリング学会の論文

Development of Stem Temperature Control System on Marine Reheat Boiler

スポンサーリンク

概要

著者

関連論文

スポンサーリンク