1747-L543
电伴热过程检测
按照熔盐炉系统工艺流程的要求:系统停车时,确保盐罐电伴热保温180℃以上;系统启动时,确保盐罐及盐管路和盐阀电伴热保温在180℃以上(依工艺要求而定),以保证盐泵启动后,熔盐能顺利通过和回流。一旦电伴热系统发生故障,熔盐凝固将致使整个熔盐炉系统无法运行,造成较长时间的停产事故。设计的特点说明如下:
(l)将整个盐管路按照、工艺划分为32个控制回路:盐罐13个回路、盐管14个回路、盐阀一个回路、旁通管4个回路。采用A2系列可编程控制器对101个温度测点采集显示,对32个回路直接进行控制;
(2)本系统考虑到启动时减少对供电系统的冲击,系统启动时,对每一个控制回路,采用分别程控(间隔5-10秒钟)由PLC程控启动,转入运行由PLC进行监测分时调节,减少系统供电负荷冲击;
(3)本系统的温度检测元件,共选用101支PT100铅电阻温度计,其信号采样方式在系统说明部分有详细介绍;
(4)电流和电压信号采集是通过电量变换器将互感器的信号转换成4-20mA(0-5V)信号送入PLC。
NATIonAL INSTRUMENTS PCMCIA-GPIB
National Instruments PXI-6713 High-Speed 8-Channel Analog Output
National Instruments Model # PXI-8212 GPIB / ENET card
NATIonAL INSTRUMENTS - NI 9215 -- 4-Channel, 100 kS/s/ch, 16-bit, ±10 V Analog
NATIonAL INSTRUMENTS - NI 9215 -- 4-Channel, 100 kS/s/ch, 16-bit, ±10 V Analog
National Instruments NI PXI-8461 Card TESTED
National Instruments NI GPIB-USB-B Controller Tested
National Instruments NI PCI 6025E DAQ Card board Working
National Instruments NI PCI-6071E Card TESTED
National Instruments NI PCI-MIO-16E-1 / 6070E - DAQ Card Multifunction Card
NATIonAL INSTRUMENT NI-CFP-QUAD-510 USPP NICFPQUAD510
NI National Instruments PCI-6515 Board working
National Instruments NI PCI-6512 Board working
National Instruments NI GPIB-USB-B Controller, Tested
NI National Instruments PCMCIA-CAN/2 Interface with cable
National Instruments NI GPIB-USB-B Interface Adapter
National Instruments GPIB-1014-EH VMEbus Interface, New