The utility model relates to a cooling air device for boiler fire detection probe in thermal power plant, which has a cooling air header, a cooling pipe network connected with the outlet of the cooling air header, a pressure sensor connected with the cooling air header, an air inlet of the cooling air header through a baffle type three-way valve and two cooling fans, a muffler connected to the inlet of the cooling fan, and an auxiliary cooling air inlet of the cooling air header. There are back shut-off valves, flow regulating valves, flowmeters and front shut-off valves between the air inlet of auxiliary cooling duct and the air inlet of cooling duct, and there are shut-off valves between the air inlet of cooling duct and the three-way valve of baffle type. The utility model has an auxiliary cooling air device. When the boiler is in normal operation, the fan is stopped, and the fire detection probe is cooled by a cold primary air. The operation time of the fan is reduced, the failure rate of the fire detection cooling fan is reduced, the energy consumption is reduced, and the long-term safe and stable operation of the boiler is effectively guaranteed.
【技术实现步骤摘要】
一种火电厂锅炉火检探头冷却风装置
本技术涉及一种火电厂锅炉火检冷却风装置,特别是一种火电厂锅炉火检冷却风装置的辅助冷却风装置。
技术介绍
火电厂锅炉的炉膛内的壁面上布有火检探头,火检探头用于实时监测炉膛内火焰的燃烧状况,并将火焰的燃烧状况传到控制室,控制室内的控制器根据燃火焰的烧状况来调整锅炉的运行控制参数,以保证锅炉正常安全地运行。由于火检探头是在温度比较高炉膛里,为了保证火检探头的正常使用,需要用火检冷却风装置对炉膛内的火检探头进行冷却。火电厂锅炉火检探头冷却风装置有冷却风母管,冷却风母管的出风口连有火检探头冷却管网,冷却风母管上连有压力传感器,冷却风母管的入风口通过挡板式三通阀并连有两台冷却风机,冷却风机的入口分别连有消声器。火电厂锅炉火检探头冷却风装置的冷却风机有两台,使用时,一台冷却风机运行,是运行风机,另一台冷却风机备用,是备用风机,运行风机与备用风机之间有连锁启动装置。使用时,挡板式三通阀将运行风机与冷却风母管连通,将备用风机与冷却风母管隔断。用冷却风却火检探头的过程中,有时运行风机因参数变化,使冷却风母管的冷却风出现压力过低和流量不足等不正常情况, ...
【技术保护点】
1.一种火电厂锅炉火检探头冷却风装置,有冷却风母管,冷却风母管的出风口连有火检探头冷却管网,冷却风母管上连有压力传感器,冷却风母管的入风口通过挡板式三通阀并连有两台冷却风机,冷却风机的入口分别连有消声器,其特征在于:冷却风母管的入风口还并连有辅助冷却风管,辅助冷却风管的入风口与冷却风母管的入风口之间依次有后关断阀、流量调节阀、流量计和前关断阀,冷却风母管的入风口与挡板式三通阀之间有关断阀。
【技术特征摘要】
1.一种火电厂锅炉火检探头冷却风装置,有冷却风母管,冷却风母管的出风口连有火检探头冷却管网,冷却风母管上连有压力传感器,冷却风母管的入风口通过挡板式三通阀并连有两台冷却风机,冷却风机的入口分别连有消声器,其特征在于:冷却风母管的入风口还并连有辅助冷却风管,辅助冷却风管的入风口与冷却风母管的入风口之间依次有后关断阀、流量调节阀、流量计和...
【专利技术属性】
技术研发人员:高名一,孟祥玉,苏永,付新宇,于喜文,马晓光,陈志勇,陈向崴,杨鹏,董靖,刘丞涵,
申请(专利权)人:辽宁大唐国际沈东热电有限责任公司,
类型:新型
国别省市:辽宁,21
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