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通过理论计算设计一种带锥齿蜗轮蜗杆传动式消防水炮，详细介绍了所设计消防水炮的工作特点，重点阐述了消防水炮整体结构及关键部件的设计，并对消防水炮内流道流场特性进行了仿真分析。仿真结果与预期效果基本吻合体现出了设计的合理性，相关分析结果可为消防水炮结构设计和性能优化提供一定的参考。“,”A fire water monitor driven by worm gear with bevel gear was designed based on the theoretical calcula-tions. The classification and features of fire water monitor were elaborated,and the design of whole structure and key components of fire water monitor were discussed. Moreover,the jet characteristics and the influence factors on the jet performances were also investigated in details. The simulation results approximately agree with the expecta-tion effect,which reflects the rationality of the design. The relevant analysis can provide some guidance for the design and optimization of fire water monitor.