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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。
Steam injection underwater heating industry and civilian areas have a wide range of applications. During the heating process of steam submerged injection, due to the drastic changes of the bubble volume and the spoiler effect generated during the injection, such as improper design or operation, strong noise and vibration will be generated in the water space, which may be seriously threatened Reliability of equipment operation. The influence of nozzle structure, arrangement parameters and equipment operating parameters on the noise of triple-nozzle steam injection was experimentally studied. Based on the experimental results, the calculation formula of the noise of underwater injection was obtained. The results show that the steam at atmospheric pressure As the water temperature increases, the noise of underwater injection firstly increases and then decreases rapidly. With the further increase of water temperature, the pressure inside the cylinder gradually increases, and the noise of underwater steam injection decreases slowly, which is obviously lower than the water temperature The noise of underwater steam injection increased with the increase of steam flow, but the increasing amplitude decreased gradually, and the peak of injection noise appeared at higher water temperature. Injection noise has a certain impact, but less affected.