气力输送输灰设备堵管原因：

　　Reasons for blockage of pneumatic conveying ash conveying equipment:

　　1、管道中的灰比较潮湿;

　　1. The ash in the pipeline is relatively damp;

　　2、有异物或块状物堵管;

　　2. There are foreign objects or block like objects blocking the pipe;

　　3、气力输灰压力不足;

　　3. Insufficient pneumatic ash conveying pressure;

　　4、下灰时间设定过长或落灰量过大;

　　4. The setting of the ash removal time is too long or the amount of ash falling is too large;

　　5、输灰用压缩空气品质差，含水量大;

　　5. The compressed air used for ash transportation has poor quality and high moisture content;

　　6、输灰辅助管道脱落。气力输送输灰设备堵管堵点判断：

　　6. The auxiliary pipeline for ash transportation has fallen off. Determination of blockage points in pneumatic conveying ash conveying equipment:

　　1、从最后一台仓泵开始判断，先打开该段输灰系统的最后一台仓泵的入口进料阀，如果入口压力有下降，则说明该输灰系统堵点在仓泵后面;

　　1. Starting from the last bin pump, open the inlet feed valve of the last bin pump of the ash conveying system. If the inlet pressure drops, it indicates that the blockage point of the ash conveying system is behind the bin pump;

　　2、若入口压力没有下降，则打开倒数第二台仓泵的入口进料阀，观察压力是否下降，如果下降则说明堵点在倒数第一和第二台仓泵之间;

　　2. If the inlet pressure does not decrease, open the inlet feed valve of the second to last bin pump and observe whether the pressure decreases. If it decreases, it indicates that the blockage point is between the first to last and second bin pumps;

　　3、若入口压力没有下降，则继续依次向前打开仓泵的入口进料阀进行判断，直到确定堵点位置

　　3. If the inlet pressure does not decrease, continue to open the inlet feed valves of the bin pump in sequence to determine the location of the blockage point

　　气力输灰系统堵管处理：

　　Pipe blockage treatment of pneumatic ash conveying system:

　　1、检查电除尘气化风机及电加热器的运行情况，若有异常，及时联系设备部维护人员处理，并打开除尘气化风机联络门，确保灰源干燥;

　　1. Check the operation of the electrostatic precipitator gasification fan and electric heater. If there are any abnormalities, promptly contact the maintenance personnel of the equipment department for handling, and open the contact door of the dust removal gasification fan to ensure that the ash source is dry;

　　2、联系设备部维护人员排除异物或块状物;

　　2. Contact the maintenance personnel of the equipment department to remove foreign objects or lumps;

　　3、检查除灰空压机运行情况，排查管道是否有漏气，并及时联系设备部维护人员处理;

　　3. Check the operation of the ash removal air compressor, investigate whether there is any air leakage in the pipeline, and promptly contact the maintenance personnel of the equipment department for handling;

　　4、调节下灰时间，减少下灰量;

　　4. Adjust the ash discharge time to reduce the amount of ash discharge;

　　6、加强除灰空压机、干燥机和储气罐的排水;

　　6. Strengthen the drainage of ash removal air compressors, dryers, and air storage tanks;

　　7、联系设备部维护人员重新装好输灰辅助管道。

　　7. Contact the maintenance personnel of the equipment department to reinstall the ash conveying auxiliary pipeline.

　　气力输送输灰系统运行中的各种原因及应采取的相应措施：

　　Various reasons and corresponding measures to be taken during the operation of pneumatic conveying ash conveying system:

　　在气力输送输灰系统运行中常会出现输灰曲线异常波动、频繁堵灰、输灰压力高但无任何波动频繁致使输灰时间超时或输灰压力过低、不出力等现象。

　　During the operation of the pneumatic conveying ash conveying system, abnormal fluctuations in the ash conveying curve, frequent blockage of ash, high ash conveying pressure without any fluctuations frequently occur, resulting in the ash conveying time exceeding the time limit, low ash conveying pressure, and no output.

　　下面针对以上提出的几种异常现象，结合自气力输送输灰系统投运以来所发现的各种原因进行综合性的分析，并将应采取的相应措施进行一下概述。

　　Below is a comprehensive analysis of the various abnormal phenomena mentioned above, combined with the various reasons discovered since the operation of the pneumatic conveying ash conveying system, and an overview of the corresponding measures that should be taken.

　　首先说一下气力输送输灰系统压力过高的原因及处理方法，输灰压力过高，输灰曲线异常频繁波动、频繁堵灰的原因主要有以下几点：

　　Firstly, let's talk about the reasons and solutions for high pressure in pneumatic conveying ash conveying systems. The main reasons for high ash conveying pressure, abnormal and frequent fluctuations in ash conveying curves, and frequent ash blockage are as follows:

　　1.灰质差，导致灰量过大，灰分的粒径过粗，远远大于设计煤种所限定的各种设计值，使得系统出力超负荷，出现曲线异常波动、频繁堵灰的现象;

　　1. Poor ash content leads to excessive ash content and coarse ash particle size, far exceeding the various design values limited by the design coal type, resulting in overloaded system output, abnormal curve fluctuations, and frequent ash blockage;

　　2.气力输灰除尘的电场因烟气中灰量过大、灰斗下灰不畅或输灰系统停运时间较长、输灰不及时等各种原因导致灰斗发高料位报警，而按照规定停运电场且停运时间较长、停运电场较多或电场因内部原因无法正常投运，灰斗内均为经自然沉降下来的烟气中大颗粒的灰粒;

　　2. The electric field of pneumatic ash conveying and dust removal may trigger a high material level alarm in the ash hopper due to various reasons such as excessive ash content in the flue gas, poor ash discharge from the ash hopper, long shutdown time of the ash conveying system, and untimely ash conveying. However, if the electric field is shut down for a long time according to regulations, or if there are many shutdowns of the electric field, or if the electric field cannot be put into operation due to internal reasons, the ash hopper will be filled with large particles of ash from the flue gas that have naturally settled down;

　　3.输灰管的内套管大面积脱落、压力罐内喷嘴脱落较多、输灰管内有异物堵塞管道或电动分路阀阀芯脱落，造成输灰不畅;

　　3. The inner sleeve of the ash conveying pipe has fallen off extensively, the nozzle in the pressure tank has fallen off more frequently, there are foreign objects blocking the pipeline or the valve core of the electric shunt valve has fallen off, resulting in poor ash conveying;

　　4.输灰压缩空气管路上的手动阀开度调整不当、阀门内漏严重、供气管路泄露或气动阀门失灵、指示错误、门芯脱落，导致空压机供气系统出力不足;

　　4. Improper adjustment of the manual valve opening on the compressed air pipeline for ash transportation, severe valve leakage, gas supply pipeline leakage or pneumatic valve failure, incorrect indication, and door core detachment, resulting in insufficient output of the air compressor's gas supply system;

　　5.气力输灰飞灰较湿、黏度大不易输送;

　　5. Pneumatic ash conveying: Fly ash is relatively wet and has high viscosity, making it difficult to transport;

　　6.压力罐料位计不准或失灵，造成压力罐内装灰过多。

　　6. The level gauge of the pressure tank is inaccurate or malfunctioning, resulting in excessive ash filling inside the pressure tank.

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