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Changes of Output Performances of Main Dynamo System on T/V Kakuyo-Maru during 13 Years

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Title: Changes of Output Performances of Main Dynamo System on T/V Kakuyo-Maru during 13 Years
Other Titles: 鶴洋丸ディ-ゼル発電原動機の経年変化 / Output Perfomance of dynamo engine
Authors: Nishiya, Toyonari / Kiri, Hiroaki / Kozuma, Masaru
Authors (alternative): 西矢, 豊就 / 桐, 博昭 / 小妻, 勝
Issue Date: Mar-1989
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.65, pp.37-44; 1989
Abstract: A ship borne system for electric supply coupled with an electric generator and a drive engine gradually decreases its performance year by year even on continuous careful maintenance and arrangements by marine engineers. While a trouble ratio of the total dynamo system in all ship borne machinery generally increases with running duration. The mean trouble ratio is around 10%. Accordingly, marine engineers should regularly check the system to hold their current states to maintain constant performance. According to Yoshimura et al, the limited load ratio of diesel generators varied with their running duration and are generally given at a range of 60-70% for their constant output. For the T/V Kakuyo-Maru, the electric generator system consists of two main generators of 450 kVA (No 1, No 2) and an auxiliary generator of 100 kVA. The main generators are used alternatively at a suitable interval. The working hours of No.1 and No.2 is around 41,000 h since 1975 when T/V Kakuyo-Maru was built. Official inspections based on Maritime Safety Law were made by using load tests on the main dynamo systems to check their various performances on May 1987. This report deals on some technical considerations on changes of performances of the systems: output power, various gas pressures, etc, in a test tank of a land factory. The results were compares in the official inspection reports. / 一般に船内装備の主・補機関は,その稼動時間の増加と共に,初期の諸性能が劣化する。これら主・補機関を効率的により安全に運転するには,それらの経時劣化に基づいた,許容負荷の範囲を再調整すべきである。また,これらの諸性能が劣化する経時的原因を究明,適切に計画保全し,信頼性を回復することが安全運転上最も重要である。そこで,一つの方法として,鶴洋丸主発電原動機の経時変化した現状を確認するため,出力性能実験をした。その結果を考察したところ,次のことが判明した。1) 出力性能に関与する諸項目の経時劣化は少ない。2) 発電機負荷,Pe(kW)と燃料消費率,be(g/kW・h)との関係は,1号(D-1)および2号(D-2)主発電原動機で,それぞれ,近似的に次式のようになる。D-1, lnbe=ln1111.85-0.2804lnPe(g/kW・h) D-2, lnbe=ln1209.57-0.2971lnPe(g/kW・h)
Keywords: dynamo engine / 舶用発電機 / Specific fuel consumption / 燃料消費率
URI: http://hdl.handle.net/10069/30129
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第65号

Citable URI : http://hdl.handle.net/10069/30129

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