浓相正压气力输送系统在实际运行中会出现各种故障，以下是一些故障排除案例：

　　The dense phase positive pressure pneumatic conveying system may encounter various malfunctions during actual operation. Here are some troubleshooting cases:

　　正压气力输送仓泵

　　Positive pressure pneumatic conveying bin pump

　　管道堵塞故障排除案例

　　Troubleshooting case of pipeline blockage

　　故障现象：某厂1号炉顶棚过热器泄漏后，浓相正压飞灰气力输送系统堵管故障频发，一级电场灰斗出料口处灰板结严重，仓泵落料不畅，发“灰斗高料位”报警。

　　Fault phenomenon: After the leakage of the top superheater of the No. 1 furnace in a certain factory, the blockage of the dense phase positive pressure fly ash pneumatic conveying system occurred frequently. The ash plate at the discharge outlet of the first level electric field ash hopper was severely consolidated, and the feeding of the bin pump was not smooth, resulting in an "ash hopper high material level" alarm.

　　原因分析：锅炉受热面泄漏，飞灰吸附大量水分，使灰的粘性增加，内摩擦增大，流动性差，流动阻力增大，从而造成堵管。

　　Cause analysis: Boiler heating surface leakage, fly ash adsorption of a large amount of moisture, increased ash viscosity, increased internal friction, poor fluidity, increased flow resistance, resulting in pipe blockage.

　　解决措施：停炉后，组织人工放灰，彻底清空灰斗。同时，规范运行操作，在锅炉点火前12小时投运静电除尘器各加热器，确保灰斗和各绝缘件的干燥，检查各加热器系统的电流是否正常。

　　Solution: After shutting down the furnace, organize manual ash discharge and thoroughly empty the ash hopper. At the same time, standardize the operation and put each heater of the electrostatic precipitator into operation 12 hours before boiler ignition to ensure the dryness of the ash hopper and insulation components, and check whether the current of each heater system is normal.

　　仓泵进料阀密封失灵故障排除案例

　　Troubleshooting case of sealing failure of the feed valve of the warehouse pump

　　故障现象：某厂1号炉一级电场输灰管道输送压力偏高，将仓泵进料时间逐渐调减后有所好转，但只要增加仓泵进料时间，输灰管道便出现堵塞现象。

　　Fault phenomenon: The conveying pressure of the ash pipeline in the first stage electric field of the No.1 furnace in a certain factory is too high. After gradually reducing the feeding time of the bin pump, there is some improvement. However, as long as the feeding time of the bin pump is increased, the ash pipeline will become blocked.

　　原因分析：经检查确定，4室1电场仓泵进料圆顶阀阀芯陶瓷密封片与金属阀芯间松脱，已不能起到密封作用，导致仓泵正常进料后输送异常。

　　Cause analysis: After inspection, it was determined that the ceramic sealing plate and metal valve core of the dome valve core of the electric field chamber pump in Room 4 were loose, which could no longer provide a sealing effect, resulting in abnormal delivery of the chamber pump after normal feeding.

　　解决措施：更换进料圆顶阀的阀芯陶瓷密封片，恢复其密封性能。

　　Solution: Replace the ceramic sealing plate of the feed dome valve core to restore its sealing performance.

　　灰库切换阀故障排除案例

　　Troubleshooting case of ash silo switching valve

　　故障现象：某厂1号炉一级电场输灰管道自1号灰库切换至2号灰库后，输送压力偏高，后来发展为输灰管道频繁堵塞，将仓泵进料时间由原60秒逐步调整为5秒后，仍无好转。

　　Fault phenomenon: After switching the ash conveying pipeline of the first stage electric field of the first furnace in a certain factory from the first ash silo to the second ash silo, the conveying pressure was too high, which later developed into frequent blockage of the ash conveying pipeline. After gradually adjusting the feeding time of the bin pump from the original 60 seconds to 5 seconds, there was still no improvement.

　　原因分析：仓泵停止进料，执行吹扫程序时，吹扫压力降至0.1Mpa时不再下降，经逐段排堵，确定原因为一级电场输灰管道至2号灰库切换阀阀芯脱落呈半开状态，导致管道通流不畅。

　　Cause analysis: When the bin pump stopped feeding and the blowing program was executed, the blowing pressure dropped to 0.1Mpa and no longer decreased. After step-by-step blockage removal, it was determined that the cause was the detachment of the valve core of the switching valve from the first stage electric field ash conveying pipeline to the second ash silo, which was in a semi open state, resulting in poor pipeline flow.

　　解决措施：修复或更换灰库切换阀，确保阀门正常开闭。

　　Solution: Repair or replace the ash silo switching valve to ensure that the valve opens and closes normally.

　　进料阀泄漏故障排除案例

　　Troubleshooting case of leakage in feed valve

　　故障现象：输送时气压大部分从泄露处吹向料仓或灰斗，实际上物料仍存于管道内部。当管道压力下降到设定的空管压力后，系统默认空管，再次进料输送，如此反复，最终造成管道堵塞。

　　Fault phenomenon: During transportation, most of the air pressure is blown from the leakage point towards the material bin or ash hopper, but in reality, the material is still stored inside the pipeline. When the pipeline pressure drops to the set empty pipe pressure, the system defaults to empty pipe and feeds the material again. This process repeats repeatedly, ultimately causing pipeline blockage.

　　原因分析：进料阀密封损坏，导致泄漏。

　　Cause analysis: The sealing of the feed valve was damaged, resulting in leakage.

　　解决措施：停止进料，关闭手动检修阀和出料阀，将系统切换到就地输送。打开吹堵阀，先将管道疏通，待管道压力下降到空管压力后，再打开进气阀。当仓泵内压力达到设定值后，打开出料阀，同时再次打开吹堵阀。待整套系统内管道压力都达到空管压力后，关闭进气阀、吹堵阀，更换进料阀，将系统切换到自动输送。

　　Solution: Stop feeding, close the manual maintenance valve and discharge valve, and switch the system to local conveying. Open the blow off valve, first clear the pipeline, and then open the intake valve after the pipeline pressure drops to the pressure of the empty pipe. When the pressure inside the warehouse pump reaches the set value, open the discharge valve and at the same time, open the blow off valve again. After the pipeline pressure in the entire system reaches the pressure of the empty pipe, close the intake valve and blow off valve, replace the feed valve, and switch the system to automatic conveying.

　　本文由 气力输送系统  友情奉献.更多有关的知识请点击  http://www.sdyshjx.com/  真诚的态度.为您提供为全面的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

　　This article is a friendly contribution from the pneumatic conveying system For more related knowledge, please click http://www.sdyshjx.com/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.　　浓相正压气力输送系统在实际运行中会出现各种故障，以下是一些故障排除案例：

　　The dense phase positive pressure pneumatic conveying system may encounter various malfunctions during actual operation. Here are some troubleshooting cases:

　　正压气力输送仓泵

　　Positive pressure pneumatic conveying bin pump

　　管道堵塞故障排除案例

　　Troubleshooting case of pipeline blockage

　　故障现象：某厂1号炉顶棚过热器泄漏后，浓相正压飞灰气力输送系统堵管故障频发，一级电场灰斗出料口处灰板结严重，仓泵落料不畅，发“灰斗高料位”报警。

　　Fault phenomenon: After the leakage of the top superheater of the No. 1 furnace in a certain factory, the blockage of the dense phase positive pressure fly ash pneumatic conveying system occurred frequently. The ash plate at the discharge outlet of the first level electric field ash hopper was severely consolidated, and the feeding of the bin pump was not smooth, resulting in an "ash hopper high material level" alarm.

　　原因分析：锅炉受热面泄漏，飞灰吸附大量水分，使灰的粘性增加，内摩擦增大，流动性差，流动阻力增大，从而造成堵管。

　　Cause analysis: Boiler heating surface leakage, fly ash adsorption of a large amount of moisture, increased ash viscosity, increased internal friction, poor fluidity, increased flow resistance, resulting in pipe blockage.

　　解决措施：停炉后，组织人工放灰，彻底清空灰斗。同时，规范运行操作，在锅炉点火前12小时投运静电除尘器各加热器，确保灰斗和各绝缘件的干燥，检查各加热器系统的电流是否正常。

　　Solution: After shutting down the furnace, organize manual ash discharge and thoroughly empty the ash hopper. At the same time, standardize the operation and put each heater of the electrostatic precipitator into operation 12 hours before boiler ignition to ensure the dryness of the ash hopper and insulation components, and check whether the current of each heater system is normal.

　　仓泵进料阀密封失灵故障排除案例

　　Troubleshooting case of sealing failure of the feed valve of the warehouse pump

　　故障现象：某厂1号炉一级电场输灰管道输送压力偏高，将仓泵进料时间逐渐调减后有所好转，但只要增加仓泵进料时间，输灰管道便出现堵塞现象。

　　Fault phenomenon: The conveying pressure of the ash pipeline in the first stage electric field of the No.1 furnace in a certain factory is too high. After gradually reducing the feeding time of the bin pump, there is some improvement. However, as long as the feeding time of the bin pump is increased, the ash pipeline will become blocked.

　　原因分析：经检查确定，4室1电场仓泵进料圆顶阀阀芯陶瓷密封片与金属阀芯间松脱，已不能起到密封作用，导致仓泵正常进料后输送异常。

　　Cause analysis: After inspection, it was determined that the ceramic sealing plate and metal valve core of the dome valve core of the electric field chamber pump in Room 4 were loose, which could no longer provide a sealing effect, resulting in abnormal delivery of the chamber pump after normal feeding.

　　解决措施：更换进料圆顶阀的阀芯陶瓷密封片，恢复其密封性能。

　　Solution: Replace the ceramic sealing plate of the feed dome valve core to restore its sealing performance.

　　灰库切换阀故障排除案例

　　Troubleshooting case of ash silo switching valve

　　故障现象：某厂1号炉一级电场输灰管道自1号灰库切换至2号灰库后，输送压力偏高，后来发展为输灰管道频繁堵塞，将仓泵进料时间由原60秒逐步调整为5秒后，仍无好转。

　　Fault phenomenon: After switching the ash conveying pipeline of the first stage electric field of the first furnace in a certain factory from the first ash silo to the second ash silo, the conveying pressure was too high, which later developed into frequent blockage of the ash conveying pipeline. After gradually adjusting the feeding time of the bin pump from the original 60 seconds to 5 seconds, there was still no improvement.

　　原因分析：仓泵停止进料，执行吹扫程序时，吹扫压力降至0.1Mpa时不再下降，经逐段排堵，确定原因为一级电场输灰管道至2号灰库切换阀阀芯脱落呈半开状态，导致管道通流不畅。

　　Cause analysis: When the bin pump stopped feeding and the blowing program was executed, the blowing pressure dropped to 0.1Mpa and no longer decreased. After step-by-step blockage removal, it was determined that the cause was the detachment of the valve core of the switching valve from the first stage electric field ash conveying pipeline to the second ash silo, which was in a semi open state, resulting in poor pipeline flow.

　　解决措施：修复或更换灰库切换阀，确保阀门正常开闭。

　　Solution: Repair or replace the ash silo switching valve to ensure that the valve opens and closes normally.

　　进料阀泄漏故障排除案例

　　Troubleshooting case of leakage in feed valve

　　故障现象：输送时气压大部分从泄露处吹向料仓或灰斗，实际上物料仍存于管道内部。当管道压力下降到设定的空管压力后，系统默认空管，再次进料输送，如此反复，最终造成管道堵塞。

　　Fault phenomenon: During transportation, most of the air pressure is blown from the leakage point towards the material bin or ash hopper, but in reality, the material is still stored inside the pipeline. When the pipeline pressure drops to the set empty pipe pressure, the system defaults to empty pipe and feeds the material again. This process repeats repeatedly, ultimately causing pipeline blockage.

　　原因分析：进料阀密封损坏，导致泄漏。

　　Cause analysis: The sealing of the feed valve was damaged, resulting in leakage.

　　解决措施：停止进料，关闭手动检修阀和出料阀，将系统切换到就地输送。打开吹堵阀，先将管道疏通，待管道压力下降到空管压力后，再打开进气阀。当仓泵内压力达到设定值后，打开出料阀，同时再次打开吹堵阀。待整套系统内管道压力都达到空管压力后，关闭进气阀、吹堵阀，更换进料阀，将系统切换到自动输送。

　　Solution: Stop feeding, close the manual maintenance valve and discharge valve, and switch the system to local conveying. Open the blow off valve, first clear the pipeline, and then open the intake valve after the pipeline pressure drops to the pressure of the empty pipe. When the pressure inside the warehouse pump reaches the set value, open the discharge valve and at the same time, open the blow off valve again. After the pipeline pressure in the entire system reaches the pressure of the empty pipe, close the intake valve and blow off valve, replace the feed valve, and switch the system to automatic conveying.

　　本文由 气力输送系统  友情奉献.更多有关的知识请点击  http://www.sdyshjx.com/  真诚的态度.为您提供为全面的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

　　This article is a friendly contribution from the pneumatic conveying system For more related knowledge, please click http://www.sdyshjx.com/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.