节能型洁具真空吸排系统供气量调节技术研究  

Study of Air Consumption Adjustment for Energy Conservation in Vacuum Suction and Discharge Systems

作　　者：郭钟华[1] 李小宁[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《机床与液压》2015年第23期4-6,共3页Machine Tool & Hydraulics

基　　金：国家自然科学基金资助项目(51305202);江苏省自然科学基金资助项目(BK20130764)

摘　　要：目前真空洁具系统工作时冲洗力设定为固定值,真空抽吸时间按最大污物量设定,对于高频率中、低污物量冲洗作业而言,存在空气消耗量的浪费。针对真空吸排系统的特点,研究了节能型洁具真空吸排系统供气量调节方法。其中,真空发生器的吸气流量由等温放出法测得,基于真空吸排系统流量试验数据,使用最小二乘法辨识流量特性参数,对真空收集罐内的压力响应进行仿真并得出洁具真空吸排系统压力响应模型。以此为基础,通过调节供气时间来调整供气量从而调节真空度和冲洗力。与现行的真空洁具装置比较,经过供气量调节设计,节省压缩空气消耗量达30%以上,显示出了很好的发展应用前景。In current vacuum sanitation systems,a significant portion of the air consumed by the present vacuum sanitation systems was wasted due to improper settings of the same propulsive force,and the time of vacuum suction was set by the maximum amount of excreta,for sanitation operation of low and medium amount of pollutants at high frequency. According to the characteristics of vacuum suction and discharge system,the method of air consumption adjustment was studied for the vacuum sanitation system. Among which,the air suction flow-rate was measured by an isothermal discharge method of the vacuum generator. On the basis of the experimental data of flow-rate of the vacuum suction and discharge system,the flow-rate characteristic parameters were derived by least-square fitting method,the pressure response process was simulated for vacuum collection tank and the response model of sanitation system was obtained. Therefore,the vacuum degree and sewerage force were adjusted by changing the air supply time and air consumption. The variable vacuum-degree design saves more than 30 percent of the energy supply in comparison with current vacuum sanitation devices,which displays excellent prospect in application and development.

关 键 词：真空吸排系统 气动真空发生器 节能 供气量调节 

分 类 号：TH138[机械工程—机械制造及自动化]