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一、研制目的随着我国电力事业的迅猛发展,各种大型汽轮发电机组大量投入运行,对各种自动控制及仪表的要求不断提高,对用于汽轮发电机组运行监测的转速表也提出新的要求。尤其是国内某大型汽轮发电机组发生重大设备事故,机组全部损坏报废,给国家造成重大损失,当时虽有转速表进行监测,但事故发生时转速究竟多少,未能反映,给事故分析带来一定困难。因此有必要研制新一代转速表,要求有最高转速贮存,超速报警,断电数据保持等功能。这样为保证汽轮发电机组安全运行,尽力避免事故发生,提高经济
First, the purpose of development With the rapid development of China’s power industry, a large number of large-scale turbine generator sets put into operation, a variety of automatic control and instrumentation requirements continue to improve, for the turbine operation monitoring of the tachometer is also proposed New requirement In particular, a major domestic turbine accident occurred major equipment, unit damage all scrapped, causing great losses to the country, although the tachometer was monitoring, but the speed of the accident how much, failed to reflect the accident analysis brought Must be difficult. Therefore, it is necessary to develop a new generation of tachometers, requiring maximum speed storage, speeding alarm, power-off data retention and other functions. In order to ensure the safe operation of the steam turbine generator, try our best to avoid the accident and increase the economy