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Research and Development of a Turbo-Charger-Aided, Forced-Ventilated Valveless Pulse Combustor

涡轮增压辅助强制通风无阀脉冲燃烧器的研制

基本信息

批准号：
01550173
负责人：
OHIWA Norio
金额：
$ 1.22万
依托单位：
Nagoya Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

项目摘要

In order to estimate the possibilty of co-generation systems with high thermal efficiency, such as gas turbines driven by a valveless pulse combustor, the following three systems are investigated experimentally: (1) an ordinary type valveless pulse combustor with forced air supply by a blower, (2) a single charged and forced ignited intermittent combustion, and (3) a twoーstep charged intermitーtent combustion with controlled ignition. The results obtaned are summarized as follows.(1) As a spark ignitor is continued to be applied, a transition of the combustion pattern from an ordinary pulse combustion to an intermittent explosive combustion with increasing air supply pressure. The latter pattern, named "Single charged and forced ignited intermittent combustion", can operate stably beyond the limit of the ordinary pulse combustion and have a mean combustion pressure considerably higher than that of the ordinary pulsation, being useful for driving a turbo-charger.(2) Combination of the forced ignited intermittent combustion with an ignitor with variable disーcharge frequency of 10-102Hz enables "Two-step charged intermittent combustion with controlled ignition", it operates at subーharmonics of discharge frequency ranging 10-34Hz.(3) The turboーcharger driven by a twoーstep charged, controlled ignited intermittent combustion exhibits positive and stable pressure boost, when operated at 1/3-subharmonics.According to the results, it can be said that the suggested controlled ignition mode of pulse combustion may become one of the useful combustors for constituting high efficiency coーgeneration systems, if such turbo-chargers that have the highest pressure ratios and the lowest flow rates could be obtained.

为了估计热效率高的热电联产系统的可能性，如无阀脉冲燃烧器驱动的燃气轮机，对以下三种系统进行了实验研究：(1)普通无阀脉冲燃烧器鼓风机强制送风；(2)单次带电强制点火间歇燃烧；(3)两级ー带电间歇燃烧控制点火。研究结果表明：(1)随着火花点火器的继续使用，随着送风压力的增加，燃烧方式由普通脉冲燃烧向间歇爆炸燃烧转变。后一种模式称为“单次充电强制点火间歇燃烧”，它可以在普通脉冲燃烧的极限之外稳定地工作，并且平均燃烧压力比普通脉动燃烧高得多，对涡轮增压器的驱动是有用的。(2)强制点火间歇燃烧与可变ー充电频率为10-102 Hz的点火器相结合，实现了“两级可控点火带电间歇燃烧”，它工作在放电频率为10-34赫兹的次ー谐波下。(3)由两次ー阶跃充电、可控点火的间歇燃烧驱动的涡轮增压器具有正的稳定增压。结果表明，如果能够获得压比最高、流量最小的增压比涡轮增压器，脉冲燃烧的可控点火方式可能成为构成高效CO-ー发电系统的有用燃烧室之一。