考虑压力脉动的消防水炮自适应炮头射流系统参数振动研究

doi:10.3901/JME.2020.20.246

机械工程学报 ›› 2020, Vol. 56 ›› Issue (20): 246-254.doi: 10.3901/JME.2020.20.246

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考虑压力脉动的消防水炮自适应炮头射流系统参数振动研究

袁晓明^1,2,3, 王储^1,2, 赵士宜^1,2, 张立杰^1,2

1. 燕山大学河北省重型机械流体动力传输与控制重点实验室秦皇岛 066004;
2. 燕山大学先进锻压成形技术与科学教育部重点实验室秦皇岛 066004;
3. 浙江大学流体动力与机电系统国家重点实验室杭州 310027

收稿日期:2019-09-15 修回日期:2020-04-07 出版日期:2020-10-20 发布日期:2020-12-18
作者简介:袁晓明,男,1984年出生,博士,讲师,硕士研究生导师。主要研究方向为消防水炮设计与优化、流体传动与控制。E-mail:xiaomingbingbing@163.com;张立杰(通信作者),男,1969年出生,博士,教授,博士研究生导师。主要研究方向为液压测控技术、机器人技术。E-mail:ljzhang@ysu.edu.cn
基金资助:
国家自然科学基金青年科学基金(51805468)、河北省自然科学基金青年科学基金(E2017203129)、浙江大学流体动力与机电系统国家重点实验室开放基金课题(GZKF-201820)和燕山大学基础研究专项青年课题(16LGB001)资助项目。

Research on Parameter Vibration of Adaptive Head Jet System of Fire Water Monitor Considering Pressure Pulsation

YUAN Xiaoming^1,2,3, WANG Chu^1,2, ZHAO Shiyi^1,2, ZHANG Lijie^1,2

1. Hebei Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan university, Qinhuangdao 066004;
2. Key Laboratory of Advanced Forging & Stamping Technology and Science, Yanshan University, Qinhuangdao 066004;
3. State Key Laboratory of Fluid Power & Mechatronic Systems, Zhejiang University, Hangzhou 310027

Received:2019-09-15 Revised:2020-04-07 Online:2020-10-20 Published:2020-12-18

摘要/Abstract

摘要： 消防水炮自适应炮头可根据流体压力和流量变化自动调整炮口开度,从而显著提升其射流性能。考虑自适应炮头射流系统中流体的压力脉动,结合流体体积弹性模量与刚度间的关系,建立基于时变流体刚度的射流系统参数振动动力学模型,采用多尺度法推导脉动激励频率接近射流系统固有频率和固有频率与脉动频率的组合频率时的共振响应公式,分析射流系统的主共振和组合共振响应。结果表明射流系统发生主共振响应时,激励频率占主导成分,且接近一阶固有频率时系统共振幅值最大;射流系统发生组合共振响应时,激励频率与流体刚度波动频率的组合频率对系统响应的影响与流体脉动频率有关;主共振和组合共振将恶化系统的动力学行为。本项研究可为深入探索自适应炮头射流系统的动力学特性,优化不同工况环境下的设计参数提供理论依据。

关键词: 消防水炮, 自适应炮头, 射流系统, 参数振动, 压力脉动

Abstract: The adaptive head of fire water monitor can automatically adjust the muzzle opening according to the change of fluid pressure and flow rate. Therefore, the jet performance of fire water monitor can be significantly improved. Considering the pressure pulsation of the fluid in the adaptive head jet system and combining the relationship between the fluid bulk modulus and the fluid stiffness, the parameter vibration model of adaptive head jet system based on the time-varying fluid stiffness is founded. By the multiscale method, the resonance response formulae of jet system are deduced when the excitation frequency is closed to natural frequencies and the combination frequency of the natural frequency and the pulsation frequency of jet system, and the main resonances and combined resonances of the jet system are analyzed. The results show that when the main resonance response of the jet system occurs, the dominant frequency in resonance responses is the excitation frequency, and the resonance amplitudes of the jet system is largest when it is close to the first-order natural frequency. When the combined resonance response of the jet system occurs, the influence of the combined frequency between the excitation frequency and fluid stiffness fluctuation frequency on the system response is related to the fluid pulsation frequency. The main resonances and combined resonances will seriously deteriorate the dynamics behaviour of adaptive head jet system. This research can provide a theoretical basis for further exploration of the dynamic characteristics of the adaptive head jet system of fire water monitor and optimizing the design parameters under different working conditions.

Key words: fire water monitor, adaptive head, jet system, parameter vibration, pressure pulsation

中图分类号:

TG156

袁晓明, 王储, 赵士宜, 张立杰. 考虑压力脉动的消防水炮自适应炮头射流系统参数振动研究[J]. 机械工程学报, 2020, 56(20): 246-254.

YUAN Xiaoming, WANG Chu, ZHAO Shiyi, ZHANG Lijie. Research on Parameter Vibration of Adaptive Head Jet System of Fire Water Monitor Considering Pressure Pulsation[J]. Journal of Mechanical Engineering, 2020, 56(20): 246-254.

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考虑压力脉动的消防水炮自适应炮头射流系统参数振动研究

Research on Parameter Vibration of Adaptive Head Jet System of Fire Water Monitor Considering Pressure Pulsation

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