Pressure control system of glass melting furnaces, including closed loop is arranged between the glass furnace outlet and connected with the chimney smoke control device, closed loop adjusting device comprises a micro differential pressure transmitter, intelligent connected regulator, actuator and rotation gate, the rotating gate is arranged on the glass melting furnace with the same chimney flue; it is characterized by an inner ring includes a closed loop regulating device adjustment part, a part of regulation and industrial control computer is connected with the outer ring is arranged between the chimney and the valve position signal output; output end of the industrial control computer and the input terminal micro differential pressure transmitter terminal, the executive mechanism and the intelligent controller of the locking / unlocking signal is connected with the industrial control computer and the output end of the outer ring tone The output end of the outer ring adjusting part is connected with the smoke exhaust chimney.
【技术实现步骤摘要】
本技术涉及一种窑压控制系统，具体讲是涉及一种玻璃熔窑的窑压控制系统。
技术介绍
在平板玻璃工业生产中，保持玻璃熔窑内的压力稳定是生产优质平板玻璃的前提条件。现有的玻璃熔窑两侧各装有的数支燃料喷枪，两侧的燃料喷枪交替向熔窑内喷射液体或气体燃料，每一侧喷枪的喷射时间为十几到二十分钟，然后换为另一侧，这种转换过程称为玻璃熔窑的“换火”。液体或气体燃料在玻璃熔窑内燃烧，窑内燃烧产生的烟气通过烟道和安装在烟道内的转动闸板进入烟囱，经烟囱向空中排放。烟囱的抽力和安装在烟道内转动闸板的“开度”决定熔窑内的窑压。在烟囱的抽力不变的前提下，转动闸板的“开度”增大，使烟道的阻力减小，窑压降低。反之，窑压则升高。玻璃熔窑在正常生产时要求窑压为稳定的“微正压”，约在5Pa±0.1Pa。目前采用的窑压控制方式通常为在玻璃熔窑的出口处与排烟烟囱之间设置一闭环调节装置，闭环调节装置由微差压变送器、智能调节器、执行机构与转动闸板依次连接，由微差压变送器测量出窑压，将压力信号转换为标准的电信号或气信号，作为测量值送入智能调节器，与智能调节器内设的测量值与人为设定的给定值进行比较，得到一偏差值；该...
【技术保护点】
【技术特征摘要】
【专利技术属性】
技术研发人员：茆令文，
申请(专利权)人：中国凯盛国际工程公司，
类型：实用新型
国别省市：
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