基于AMEsim的矿用洒水车喷洒系统动态特性研究

doi:10.16265/j.cnki.issn1003-3033.2023.S2.0003

摘要/Abstract

摘要：

为解决露天矿洒水车无法根据道路扬尘浓度自主调节喷洒水量的问题,设计一种发动机与斜盘式柱塞泵提供动力的变量洒水的喷洒系统。设计喷洒系统数学模型,计算得出喷洒系统中的喷嘴口径,获得喷洒系统的动态特性;建立喷洒系统的AMESim仿真模型,分析发动机转速、柱塞泵开口和喷嘴口径等关键参数对喷洒系统喷洒水量的影响。结果表明:增大柱塞泵倾斜角度、提高引擎转速,可以提升系统稳定性。该变量喷洒系统的喷嘴直径为2 mm,喷嘴在1.1 s后进入振荡状态并逐渐趋于稳定,斜盘倾角开度为0.95时,最先进入振荡状态并趋于稳定,当发动机转速3 000 r/min时,振荡时间短,可减少系统响应时间。

关键词: 洒水车, 液压系统, AMEsim仿真分析, 自主调节, 动态特性

Abstract:

The open-pit mine sprinkler is unable to autonomously adjust the spraying volume based on road dust concentration. To solve this problem, a variable spraying system powered by an engine and a swash plate plunger pump was designed. The mathematical model of the spraying system was designed, and the nozzle diameter of the spraying system was calculated to obtain the dynamic characteristics of the spraying system. The AMESim simulation model of the spraying system was established, the affects of the key parameters such as engine speed, plunger pump opening, and nozzle diameter on the spraying volume of the spraying system were analyzed by parametric simulation. The results show that increasing the tilt angle of the plunger pump and enhancing the engine speed can improve the stability of the system. The nozzle diameter of the variable spraying system is 2 mm. The nozzle enters an oscillation state and gradually stabilizes after 1.1 s. When the tilt angle opening of the swash plate is 0.95, it first enters an oscillation state and tends to stabilize. When the engine speed is 3 000 r/min, the oscillation time is short, which can reduce the system response time.

Key words: sprinkler, hydraulic system, AMEsim simulation analysis, autonomous adjustment, dynamic characteristics

中图分类号:

X936

王晗, 唐亚东, 杨国吉, 杨保成, 邹琪, 谢苗. 基于AMEsim的矿用洒水车喷洒系统动态特性研究[J]. 中国安全科学学报, 2023, 33(S2): 140-144.

WANG Han, TANG Yadong, YANG Guoji, YANG Baocheng, ZOU Qi, XIE Miao. Research on dynamic characteristics of spraying system of mine sprinklers based on AEMsim[J]. China Safety Science Journal, 2023, 33(S2): 140-144.

图/表 5

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模型参数名称	数值	模型参数名称	数值
弹簧预紧力/N	30	针阀质量/g	10
弹簧刚度/(N·mm^-1)	80	针阀密封接触长度/mm	45
控制腔进液孔通径/mm	0.13	针阀的密封通径/mm	5
控制腔出液孔通径/mm	0.34	针阀的配合间隙/mm	0.001 5
控制活塞通径/mm	10	针阀弹簧预紧力/N	35
控制活塞质量/g	25	喷流器内高压管的通径/mm	1.5
控制活塞配合间隙/mm	0.002	喷孔个数	1
针阀宽头通径/mm	1.9	喷孔通径/mm	0.6