The utility model provides a method for monitoring K type thermocouple protection tube wear alarm device, comprising a protective sleeve type K thermocouple package, the protective sleeve is arranged on the outer wall of the main panel, side wiring board arranged under the main circuit board, and between the outer wall of the main ground the board and deputy vice wiring board wiring board and a protective sleeve are separated through insulating ceramic tube. A polar plate is arranged below the auxiliary wiring board, and the auxiliary terminal plate and the polar plate are separated by ceramic spacers. A bipolar plate capacitor is formed between the polar plate and the outer wall of the protective sleeve. The main joint the main panel and side wiring board are respectively connected with a six Schmidt trigger and side joint. The upper part of the six Schmidt flip-flop is provided with an acoustooptic alarm. Further, the protective sleeve is made of stainless steel. For monitoring K type thermocouple protection tube wear alarm device of the patent of the whole, has the advantages of simple structure, ingenious design, can be upgraded on the basis of the original equipment, the overall manufacturing cost is not high, is conducive to the promotion of large-scale use.
【技术实现步骤摘要】
用于监测K型热电偶保护套管磨损的报警装置
本技术涉及一种报警装置,尤其是一种用于监测K型热电偶保护套管磨损的报警装置。
技术介绍
床温是循环流化床锅炉的重要运行参数,循环流化床锅炉床温是通过布置在密相区和炉膛各处的K型热电偶监测的。K型热电偶是通过在燃烧室密相区和炉膛布置多个测温点,安装相应的测温仪表进行测量,以获取温度信号,再通过补偿导线引入控制室,实现对床温的测量和控制。而K型热电偶的工作环境十分复杂和恶劣,主要面临着炉床内的燃烧反应、脱硫脱硝反应、高温腐蚀、高温磨粒磨损、燃料变化等各种因素的交替及同时作用,是集多种矛盾于一体的环境。套管磨损是K型热电偶测温过程中面临的最主要问题。在燃烧过程中,炉内床料在烟气携带下沿炉膛上升,经炉膛上部出口进入分离器,在分离器中进行气、固两相分离,分离后的烟气经上部出口,进入锅炉尾部烟道,分离出来的固体粒子,经回料阀再返回炉膛下部。在循环流化床锅炉的运行中,含有燃料、燃料灰、石灰石及其反应产物的固体床料,在炉膛一分离器一回料阀一炉膛这一封闭循环回路里处于不断的高温循环流动中,并在炉内以850-900℃进行高效燃烧及脱硫反应。因此,床温测量元件受大颗粒燃料介质流动影响,易受磨损,造成床温测量不准。一般床温测量仪表使用寿命较短,一般在3个月左右。针对K型热电偶最易发生的故障即元件磨穿进行检测(即当传感器发生磨穿时可及时发现并报警),否则就可能将传感器本身的故障误认为是被测对象的异常或故障,从而引起致命的判断错误,可能造成巨大的经济损失。对保护套管来说,当套管磨损以至于磨穿时,K型热电偶的热电特性会发生变化。在使用过程中,由 ...
【技术保护点】
用于监测K型热电偶保护套管磨损的报警装置,包括将K型热电偶包裹在内的保护套管,其特征在于,所述保护套管的外壁上安装有主接线板,所述主接线板的下方安装有副接线板,所述主接线板和副接线板之间、副接线板和保护套管的外壁之间均通过陶瓷绝缘管隔开,所述副接线板的下方还设置有极板,所述副接线板与极板之间通过陶瓷垫片隔开。
【技术特征摘要】
1.用于监测K型热电偶保护套管磨损的报警装置,包括将K型热电偶包裹在内的保护套管,其特征在于,所述保护套管的外壁上安装有主接线板,所述主接线板的下方安装有副接线板,所述主接线板和副接线板之间、副接线板和保护套管的外壁之间均通过陶瓷绝缘管隔开,所述副接线板的下方还设置有极板,所述副接线板与极板之间通过陶瓷垫片隔开。2.根据权利要求1所述的用于监测K型热电偶保护套管磨损的报警装置,其特征在于,所述极板与保护套...
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