The heating system is mainly composed of three condensing gas boilers, a heat exchange station and a monitoring room. All equipments on the site take PLC as the core controller and combine various industrial technologies, variable frequency speed regulation and PID technology to form a distributed control mechanism. Through the configuration of the lower computer software and the configuration of the upper computer monitoring interface, real-time monitoring of the three water-fired boilers and heat exchange stations is achieved, thereby ensuring the automatic and stable operation of the entire heating system.
Hot water boiler model meaning signal acquisition device mainly includes thermometer, pressure gauge, flow meter, leaking sound and light alarm, water level meter, etc. Actuators mainly include fans, frequency converters, wide pipeline pumps, valves, etc. PLC is used as the controller to read the temperature, flow, pressure and other switching signals of the field instrument; according to the interlocking relationship, the start and stop of the motor, and the operating frequency, etc. Variable frequency speed regulation technology is used to control the circulating pump and auxiliary water pump to keep the water pressure in the pipeline constant. Use software to build a visual operating interface on the host. Users exchange heat with heating stations through heat exchange stations.
A communication module is extended on the PLC, and the communication between Siemens PLC and the upper computer is realized, and the three upper computers (PC) are communicated through the switch. Through the communication module, the host computer communicates with the main body of the hot water boiler, real-time monitoring of the temperature, flow rate, pressure and other data inside the boiler, and shows that the furnace temperature upper and lower limits and scale indicators and other parameters are controlled. The host monitoring system is designed by software. The monitoring system has real-time data monitoring, executive equipment control, historical data record query, curve display, report query and alarm function, and can monitor all data of system operation.
Hot water boiler model meaning The entire heating system transmits heat source (using hot spots) to heat users through water circulation. The heating system can be divided into two subsystems. The first is the high temperature water circulation system from the boiler room to the heat exchange station. The hot water pipe network usually only leads to the heat exchange station and does not directly heat the user. This is called a pipe network. It is a low-temperature water circulation system from heat exchange stations to heating facilities in users’ homes. The hot water pipe is directly connected to the hot user and is called a secondary pipe network.
