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对使用高压冲洗机冲洗排水管道系统时系统的压力波动进行了研究,探究了喷头不同伸入距离和冲洗方式对系统压力波动的影响。结果表明:冲洗喷头引起系统最大负压的位置是相对横支管上0.5 m处;在DN110普通单立管系统中固定冲洗方式所产生的系统压力先突破-400 Pa,而DN110特殊单立管和DN75普通单立管系统则是移动冲洗方式所产生的系统压力先突破-400 Pa。
The pressure fluctuation of the system when the high pressure washer was used to flush the drainage pipe system was studied, and the influence of different extending distance and flushing mode on the pressure fluctuation of the system was explored. The results show that the position where the flushing nozzle causes the system maximum negative pressure is 0.5 m relative to the horizontal branch pipe. The system pressure generated by the fixed flushing mode in DN110 ordinary single-tube system first breaks -400 Pa, while the DN110 special single- DN75 ordinary single-stand pipe system is the pressure generated by mobile washing system pressure break -400 Pa.