核电厂通风系统中压差测量问题分析及解决建议

Analysis and solution of the differential pressure measurement problem in the ventilation systems of nuclear power plants

目的分析核电厂通风系统中压差测量装置的有效性,解决发现的压差测量问题。方法通过总结测压系统常见问题,运用流体力学原理分析系统不同部位的压力变化及对压差测量的影响。结果核电厂某些测压系统存在取压口布置不合理或部件损坏等问题,影响了碘吸附器等净化设备阻力测量的代表性和准确性,建议对其进行检查和分析。结论根据压差问题的分析,通过对压差测量装置的排查可有效提高阻力测量的准确性,为净化设备的更换提供更好依据,确保通风系统的安全运行。

Objective To analyze the validity of the differential pressure measurement device in the ventilation system of nuclear power plant,and solve the problem of differential pressure measurement found.Methods On the basis of summarizing the common problems of the pressure measurement system,the paper analyzes the pressure changes of different parts of the system and the influence of differential pressure measurement through the application of fluid mechanics.Results Some pressure measuring systems in nuclear power plants have problems such as unreasonable pressure port arrangement or component damage,which will affect the representativeness and accuracy of the resistance measurement of iodine absorbers and other purification equipment.It is recommended to check and analyze them.Conclusion According to the analysis of the pressure difference problem,the inspection of the differential pressure measuring device can effectively improve the accuracy of the resistance measurement.It will provide a better basis for the purification equipments replacement to ensure the safe operation of the ventilation system.