水下呼吸器用调节阀的设计改进

为降低水下呼吸器用调节阀的吸气阻力，在充分分析调节阀工作原理和吸气阻力形成机理的基础上，对原有调节阀的阀芯结构进行了设计改进。并对新型调节阀进行了受力分析研究，建立了调节阀的吸气阻力求解模型。理论计算和试验研究表明：新型调节阀的吸气阻力由1321 Pa降低为806 Pa，大大提高了调节阀的使用性能；吸气阻力理论计算值和实际测试值的误差在合理范围内，新型调节阀的吸气阻力求解模型可为其结构设计和参数优化提供一定的理论基础。

Design Improvement of Regulating Valve for Underwater Breathing Apparatus

Based on the sufficient study and analysis of working principle of regulating valve and formation mechanism of inspiratory resistance, structure design of regulating valve is improved to reduce inspiratory resistance. Then force of active components was analyzed, and mathematical model for improved regulating valve is established. Theoretical calculation and experiment research show that inspiratory resistance of regulating valve reduces to 806 Pa from 1321 Pa, improving the performance of regulating valve greatly. Moreover, inspiratory resistance error of the theoretical calculation and actual experiment is in a reasonable range, so mathematical model for improved regulating valve provide certain theoretical basis for structure design and parameter optimization.