※ heat transfer station automatic control system provides powerful control functions for users to save energy, save manpower, improve the heating efficiency, and comprehensively improve the quality of heating ※ fully automatic heat transfer stations have the basic functions 1.1 Automatic constant frequency replenishment function simply to soften the heat transfer station replenishment system and user tank connected to the heat exchanger station automatic constant frequency hydrating function. Heat transfer station is equipped with two water supply pump, just one of the normal operation of the water supply pump frequency conversion run to meet system replenishment needs. When the normal severe dehydration, a water supply pump to power frequency speed is still unable to meet the replenishment needs of a water supply pump automatic input frequency operation, until it reaches the power frequency speed. 1.2 users to soften the water tank automatic protection function when the user connected to the heat exchanger station replenishment system demineralized water tank water level is below the set minimum water level (adjusted), heat transfer station automatic replenishment system to stop running, to prevent the water supply pump dry running and cause damage. 1.3 system thermal expansion compensation or replenishment overpressure sluicing function when the heat transfer station is shut down and then reboot the secondary network because of the the warming expansion will lead to abnormal pressure rise, overtime pay excess can lead to system pressure increases, the function The excess water can drain back to soften the water tank, in order to ensure the stability of the system pressure protection system equipment from destruction. 1.4 system return water pressure is too low when secondary NMS road damage and lead to a large area of ??the system water loss protection function, the system pressure is below the set minimum pressure (adjusted), heat transfer stations secondary circulation system automatically stop the run, the circulating pump to prevent damage due to lack of water running. So as to achieve the blocking function. 1.5 outdoor temperature compensation, automatic control of the secondary side of the return water temperature function heat transfer station can either control the secondary side of the return water temperature automatically according to the set heating curve and outdoor temperature changes, and can be maintained according to a set of fixed water temperature one of the secondary side of the return water temperature is constant, the level of the return water temperature is a measure of whether to meet the heat demand of one of the main parameters, the size of the return water temperature is a measure of the heating unit if you can achieve the best energy-saving effect parameters. 1.6 secondary side of the loop variable flow adjustment function heat transfer station can change the system heat load, adjust the speed of the circulating pump to maintain the secondary side of the supply and return water pressure (can adjust) constant, to achieve the best heating efficiency and energy-saving effect. 1.7 heat transfer station alarm caller delay delay delay since standing on the provisional grid power outage after the call from the function of the heat exchanger can be achieved automatic start function, time (you can adjust the heat transfer station before the restart) to remind may be in the on-site maintenance staff to pay attention to their own safety. 1.8 manual / automatic conversion function to ensure that the heat exchanger standing normally run manually after the failure of the automatic functions. 1.9 Other protection and alarm functions Protection functions include conventional overvoltage protection, undervoltage protection, phase loss protection, over-current protection functions. Alarm functions including circulation pump failure alarm, water supply pump failure alarm, replenishment overpressure alarm system to soften water tank pressure is too low alarm the secondary network backwater low pressure alarm, heat transfer station downtime alarm functions. 2, automatic heat transfer stations have advanced features 2.1 heating operating parameters Upload communication functions scene measured heating parameters can be uploaded to the central control room of the Heating Company, central monitoring, to discover and solve the problems in the running . Users need to select based on the actual running cable (telephone lines or communication cables, etc.) and wireless (spread spectrum radio or GPRS) communication. The machine control system can be collected, including the heating operating parameters (optional): a network side: the heat exchanger inlet temperature of the heat exchanger inlet / outlet temperature, pressure / outlet pressure filter inlet pressure / outlet pressure, electric adjusting valve opening degree of the second network side: inlet temperature / outlet temperature of the heat exchanger, the heat exchanger inlet pressure / outlet pressure, the circulation pump inlet pressure / outlet pressure, the instantaneous flow rate (calculated value), the circulation pump running frequency, fill pump operating frequency, and solve the problem A water temperature of the outdoor temperature regulation loop: detection of secondary supply temp time webmaster through PID regulator valve opening degree given value B secondary network traffic regulation loop: detection of the differential pressure of the secondary network settings regulating the circulation pump variable frequency output C water regulation loop: adjust the secondary network by detecting the backwater pressure and setting up the water pump variable frequency output D circulating pump start and stop control E water supply pump start and stop control: detection of secondary back water pressure is higher than the lower limit of Kai pump. higher than the high limit stop pump the F secondary network relief valve start and stop control: the secondary network backwater pressure is higher than the high limit open the pressure relief valve. below the high limit off valve G network traffic regulation: detecting a network flow is lower than the set value to open the bypass valve H circulating pump down pump control: Uses a three circulating pump. regularly in order to switch the start and stop of the three pumps in a pump The rest of the pump is normal operation fault occurs. I alarm: critical data alarm chain protection switching station site alarm indication J communication: virtual dedicated dial up network K station manually, automatically switch L Chinese LCD interface display the M control parameter input function of the heating network monitoring system, it has changed the artificial Meter Reading, artificial the tabulation, artificial settlement management model to achieve real-time monitoring and measurement of the heating network system automation, and can real-time steam quality and steam conditions, to facilitate the production scheduling management. Problems when heating network facilities or instrument failure timely to find out problems to deal with problems, but also to discover the leaking well steal steam for a variety of reasons, can be achieved while the the retrospective measurement data, to avoid supply with the two sides dispute . The establishment of the system can greatly reduce the heating network operating costs and the loss of steam pipes, can be unattended, the modernization of the entire heating network management, resulting in great economic benefits. System composed by the remote terminal of GPRS, GPRS running, the system management host, data servers, internal network and query workstation, the system is a combination of computer technology, communication technology, field data collection and metering technology system, the heat The network system is very important the steam measurement data were effective management, but also greatly enhance the safety and reliability of the pipeline network running. A system capacity of the system's main technical indicators: 1:250 (scalable); 2 communication: wireless private network, or GSM, GPRS, USSD public network can be wired (RS232, RS485 mode) 3 system structure: is more than The point of the star-shaped structure; system working environment temperature: -20 ℃ to +60 ℃; Humidity: 5% to 95% non-condensing; 6 real-time clock; Watch Dog.