压力旋流喷雾理论与喷雾粒度特性的探讨
Theory of Pressure Swirl Atomisation and Study on the Characteristic of Droplet Size in Atomisation
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摘要: 本文试图以实验观察的压力旋流喷雾工况为依据,提出关于压力旋流喷射雾化机理的模型设想——压力旋流喷射锥膜雾化理论。在一些基本假定条件下,导出压力旋流喷雾粒度特性关系式:(dz的单位为米)上述理论与所导出的关系式基本上同实际喷雾工况相符合,依此能对实际的喷雾工况进行较好的解释。本文还对国内电厂使用的一些油喷雾咀的喷雾粒度特性进行理论计算,以同实验数相对照,结果表明理论对实践有一定的价值,可供有关方面参考。Abstract: Based on the observation of the working condition in pressure swirl atomisation experiments, this article tries to suggest a model of the mechanism of pressure swirl atomisation-the atomisation theory of pressure swirl spray of conical film. Under some basic assumptions, the formula for the characteristic of droplet size of pressure swirl atomisation is derived: The above theory agrees basically with the actual working conditions in atomisation, and gives the latter a compratively good interpretation.In this article, theoretical calculations are worked out for the characteristic of atomised droplet size of some Oil atomising nozzles used in power plants in our country (the People's Republic of China) and are compared with actual test data. The results show that the theory is of some value to preactice, and it is recommended to those concerned for reference.
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