纺织学报 ›› 2022, Vol. 43 ›› Issue (03): 176-184.doi: 10.13475/j.fzxb.20210104909

• 机械与器材 • 上一篇    下一篇

纺纱车间空调系统数学建模及动态仿真

纪杰1, 韩云龙1, 高杰2, 汪虎明2, 陆彪1   

  1. 1.安徽工业大学 建筑工程学院, 安徽 马鞍山 243032
    2.江苏精亚环境科技有限公司, 江苏 无锡 214426
  • 收稿日期:2021-01-21 修回日期:2021-06-28 出版日期:2022-03-15 发布日期:2022-03-29
  • 作者简介:纪杰(1994—),男,硕士生。主要研究方向为纺织空调系统及自控技术。

Mathematical modeling and dynamic simulation of air conditioning system in spinning workshop

JI Jie1, HAN Yunlong1, GAO Jie2, WANG Huming2, LU Biao1   

  1. 1. School of Civil Engineering and Architecture, Anhui University of Technology, Ma'anshan, Anhui 243032, China
    2. Jiangsu Jingya Environmental Technology Co., Ltd., Wuxi, Jiangsu 214426, China
  • Received:2021-01-21 Revised:2021-06-28 Published:2022-03-15 Online:2022-03-29

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摘要：

为研究纺纱车间温湿度动态变化规律,并为空调系统自控策略提供运行平台,基于热量平衡、湿量平衡和风量平衡分别建立了喷水室、纺纱车间模型;利用Python实现业务逻辑编程,利用PyQt5开发图形用户界面,建立变露点新风控制策略,基于比例积分微分(PID)算法程序实现车间温湿度的自动控制,并开发纺纱车间空调系统动态仿真平台。以某纺纱厂车间结构参数、工艺及空调设备参数为仿真平台基础数据和边界条件,对改变空调设备控制参数后车间温湿度变化进行了仿真计算。结果表明,基于纺纱车间空调系统仿真平台能计算喷水室机器露点、车间温湿度的动态变化值及稳定到车间设定温湿度时的响应时间,可对空调设备进行自动调节控制。开发的纺纱车间空调系统仿真平台具备了纺纱车间虚拟运行环境,可在此基础上进行空调系统控制策略的相关研究。

关键词: 纺纱车间, 空调系统, 数学模型, 仿真平台, PID控制算法

Abstract:

In order to study the dynamic change of temperature and humidity in spinning workshop and provide operation platform for the automatic control strategy of air conditioning system, the models of spray chamber and spinning workshop were established respectively on the basis of heat, moisture and air-volume balance. The dynamic simulation platform of spinning air conditioning system was developed by Python and PyQt5 which support business logic programming with developed graphical user interface. The fresh air control strategy of dew point was established, and the automatic control of the temperature and humidity in the workshop was achieved based on the proportional integral derivative(PID)control algorithm. Taking the structure, process and air conditioning equipment of a spinning workshop as the basic parameters and boundary conditions of the simulation platform, the temperature and humidity changes in the workshop after changing the control parameters of air conditioning equipment were simulated. The results show that the simulation platform of air conditioning system of the spinning workshop is useful to adjust and control the air conditioning equipment. It can calculate the machine dew point of spray chamber, the changing value of the temperature and humidity, and the response time when the temperature and humidity are stable to the set temperature and humidity for the workshop. The simulation platform of spinning air-conditioning system has the virtual operation environment of a spinning workshop, which can be used to study the control strategy of the air-conditioning system.

Key words: spinning workshop, air conditioning system, mathematical model, simulation platform, PID control algorithm

中图分类号: 

  • TS108.3

图1

纺纱车间空调系统模型"

图2

温度控制策略"

图3

湿度控制策略"

表1

基础设置参数"

车间初始参数 数值 车间初始参数 数值
空气密度/(kg·m-3) 1.2 墙体温升系数 40
墙体密度/(kg·m-3) 2 500 喷水室迎风面积/m2 13
空气比热容/
(kJ·kg-1·℃-1)		 1.01 水泵额定转速/
(r·min-1)		 2 900
墙体比热容/
(kJ·kg-1·℃-1)		 0.93 水泵额定流量/
(m3·h-1)		 200
车间体积/m3 14 000 送风机额定转速/
(r·min-1)		 890
墙体体积/m3 100 送风机额定送风量/
(m3·s-1)		 66.67

图4

仿真平台主界面"

图5

仿真参数设置"

图6

新风对机器露点温度和送风含湿量的影响"

图7

二次回风阀开度对车间温湿度的影响"

图8

送风机频率对车间温湿度的影响"

图9

车间设定参数调整时温湿度的变化"

图10

温湿度的PID自动控制"

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