An air leakage control system of air preheater, including high-temperature clearance sensor, fan-shaped plate lifting mechanism and electric control cabinet, the high-temperature clearance sensor can be detected in the gap signal feedback to the PLC of the electric control cabinet, the temperature sensor comprises a sensing valve clearance welding on the rotor, a probe rod. As a lever, the lever through an adjustable supporting rod and connected together, wherein the lever is arranged on the primary and secondary limit switch limit switch at the bottom of the lever, a fulcrum is arranged between the switch and the probe rod, the support rod is closer to the party, is the role of the fulcrum the displacement of the probe rod is proportional to the amplification limit switch. The utility model of air preheater air leakage control system with the mechanically triggered high-temperature clearance sensor, the sensor by the lever device will amplify the displacement of the probe to the limit switch, to improve the accuracy, ensure the gap control in the minimum limits.
【技术实现步骤摘要】
【技术保护点】
一种空气预热器漏风控制系统，包括高温间隙传感器、扇形板提升机构和电气控制柜，其特征在于，所述高温间隙传感器可将检测到的间隙信号反馈至电器控制柜的ＰＬＣ，该ＰＬＣ可根据所述反馈信号控制扇形板提升机构运动，将间隙控制在最小限值，所述高温间隙传感器包括一焊接在转子上的传感瓣，一带有探头的探杆，以及一杠杆，所述探头与传感瓣保持需要的距离，所述杠杆通过一可调支承与探杆连接在一起，两者之间的角度可通过可调支承来调节固定，所述杠杆上设有初级限位开关和次级限位开关，所述次级限位开关触出发后系统会自动提升扇形板并自动转为温度控制模式，在所述杠杆下方，开关与探杆之间设有一支点，该支点更靠近探杆一方。
【技术特征摘要】
【专利技术属性】
技术研发人员：匡俊，马玉顺，杨晋慧，吴毅贤，邱冬雷，
申请(专利权)人：上海市东方海事工程技术有限公司，
类型：实用新型
国别省市：31[中国|上海]
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