9907-164 WOODWARD调速器

询价热线：18050036945 
详细描述：   

基于PLC的自动发货系统 
      导读： 新设计开发的成品油自动发货系统不采用现成产品发油控制装置或系统，而采用工程化的技术路线，实现一个有自己特点的个性化完美的自动控制系统。 

　　(2)运行环境 

　　监控工作站：Win2000Professional； 

　　业务工作站：Win2000Server 

　　(3)软件功能 

　　报表查询管理功能，该软件的功能能满足用户提出的要求，能对发油的数据管理、查询、制表。能在网络的客户端运行CONTROLENGINEERINGChina版权所有，访问现场的发油情况以及现场各个设备的当前工作状态，鹤位的状态，发油历史数据信息、汇总等功能。这就实现了办公室层对现场作业的一个监视、实时管理。 

　　4.几个控制功能 

　　a.流速控制 

　　对于鹤管和加油枪要求保持一定的流量(流速)范围，以保证加油作业的安全和效率。由于下列情况可能造成发油流量的变化：(1)大罐液位的高低不同；(2)管线长短不同；(3)同种油品同时发油车位多少不同；(4)使用鹤管和加油枪 

　　不同。采用变频调速器和流量计通过软件实现流速的闭环调节。根据流量计的流速信号调节管道泵的转速CONTROLENGINEERINGChina版权所有，从而调节发油流速。 

　　b.精确定量控制 

　　使用变频器和电液阀配合，可在发油结束前的定量关闭过程中提前关闭电液阀，同时降低管道泵的转速以减小流量。当达到定量数量(有一微小的提前量)时快速关断电液阀并停泵，实现1～2L的定量控制。 
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联系人：杨丽君         Q Q ：3443643092  

电话：0592-6808374      手机：18050036945 

传真：0592-6514751（注杨工收） 
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