密闭容器内蒸汽水下喷注噪声试验研究

发布时间：2019-08-02 19:49

【摘要】：蒸汽水下喷注加热在工业及民用领域有着广泛的应用。蒸汽水下喷注加热过程中,由于汽泡体积的急剧变化以及喷注过程中产生的扰流作用,如设计或运行不当,在水空间中会产生强烈的噪声并引起振动,严重时会危及设备运行的可靠性。试验研究了密闭容器内喷头结构及布置参数和设备运行参数对三喷头蒸汽水下喷注噪声的影响规律,并根据试验结果得到了蒸汽水下喷注噪声计算公式,结果表明:常压下蒸汽水下喷注噪声随着水温的升高先逐渐增大而后迅速减小;随着水温的进一步升高,筒体内压力逐渐升高,蒸汽水下喷注噪声缓慢减小,且明显低于水温较低时;蒸汽水下喷注噪声随着蒸汽流量的增加而增大,不过增大幅度逐渐减小,且喷注噪声峰值在较高水温时出现;喷头结构及其布置参数对蒸汽水下喷注噪声有一定影响,但影响程度较小。
[Abstract]:Steam underwater injection heating is widely used in industrial and civil fields. In the process of steam underwater injection heating, due to the rapid change of bubble volume and the spoiler effect produced in the process of injection, such as improper design or operation, strong noise and vibration will be produced in water space, and the reliability of equipment operation will be endangered in serious cases. The effects of nozzle structure and arrangement parameters and equipment operation parameters on steam underwater injection noise of three nozzles are studied experimentally. according to the experimental results, the calculation formula of steam underwater injection noise is obtained. The results show that the steam underwater injection noise increases gradually with the increase of water temperature and then decreases rapidly. With the further increase of water temperature, the pressure in the cylinder increases gradually, and the steam underwater injection noise decreases slowly, and is obviously lower than the water temperature; the steam underwater injection noise increases with the increase of steam flow rate, but the amplitude of increase decreases gradually, and the peak value of injection noise appears at higher water temperature. The nozzle structure and its arrangement parameters have certain influence on steam underwater injection noise, but the influence degree is small.
【作者单位】：上海理工大学上海市动力工程多相流动与传热重点实验室;上海理工大学能源与动力工程学院;上海出版印刷高等专科学校;上海锅炉厂有限公司;
【分类号】：TB535

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