Indirect dry cooling tower radiator temperature field online monitoring system
Technical field
The utility model relates to a kind of temperature field online monitoring system, particularly relates to a kind of indirect dry cooling tower radiator temperature field online monitoring system.
Background technology
The power plant air cooling system is divided into the direct air cooled system indirect air cooling system of unifying, and indirect air cooling system is divided into again the indirect air cooling system (Hai Leshi indirect air cooling system) of direct-contact type condenser and has Indirect Dry Cooling System with Surface Condenser (Harmon formula indirect air cooling system).Two kinds of indirect air cooling systems all are successfully applied in China, and have accumulated valuable operating experience in engineering practice, and the control technology of indirect air cooling system is also increasingly mature.But the ruuning situation according to present indirect air cooling unit, the operation of indirect air cooling system is controlled also has many outstanding technical problems to need to be resolved hurrily, triangle superficial dust monitoring as cooling in antifreeze monitoring, the air cooling tower of air cooling tower radiating segment and how to optimize the problem such as indirect air cooling unit back pressure set value.Properly settling of these problems will be improved air cooling system Operation safety and economy greatly.
In these problems, the loose section of air cooling tower antifreeze particularly important, according to the practice of indirect air cooling unit operation for many years, fin was frozen and was happened occasionally annual winter, reason is that the junction between every two the cooling triangles of air cooling tower exists and inevitably to have micro gap, and the wind of crossing at the cool winds hourglass has been taken away the part heat of fin; In addition, because the recirculated water of each sector is that bottom, centre from fin enters, caused middle flow large, the moisture that the both sides flow is little is joined.So the both sides of each sector will be low due to circulating water flow, heat is few, it is large to leak out, when the temperature of cooling triangle drops to zero point when following, fin occurs frozen.
The utility model content
The purpose of this utility model is to provide a kind of indirect dry cooling tower radiator temperature field online monitoring system.
the purpose of this utility model is implemented by following technical scheme, a kind of indirect dry cooling tower radiator temperature field online monitoring system, it comprises intelligent temperature sensor, bus cable and bus control unit, each air cooling tower radiator air intake place on indirect dry cooling tower is equipped with described intelligent temperature sensor, each described air cooling tower radiator air outlet slit place is equipped with described intelligent temperature sensor, the described intelligent temperature sensor that is located at described air cooling tower radiator air intake place is connected with described bus control unit by at least one described bus cable, the described intelligent temperature sensor that is located at described air cooling tower radiator air outlet slit place is connected with described bus control unit by at least one described bus cable.
Described intelligent temperature sensor is the bus type temperature sensor.
Described bus control unit is the DCS bus control unit.
Adopt the bus type temperature sensor, measure respectively each air cooling tower radiator import and export air themperature, then by bus cable with temperature data uploading to the DCS bus control unit, the real-time temperature field that is formed whole indirect dry cooling tower radiator by each air cooling tower radiator import and export air real time temperature, by analysis, the processing of DCS software to the real time temperature field data, optimize indirect air cooling unit back pressure set value, each cooling triangle dust stratification pollution level of judgement air cooling tower is monitored the possibility that each sector of air cooling tower is frozen in advance.
The utility model has the advantage of, system can judge each cooling triangle dust stratification pollution level of air cooling tower by the utility model, monitor in advance the possibility that each sector of air cooling tower is frozen, optimize indirect air cooling unit back pressure set value, to improve security and the economy of thermal power plant's indirect air cooling unit operation.
Description of drawings
Fig. 1 is a kind of indirect dry cooling tower radiator temperature field online monitoring system schematic diagram.
Bus type temperature sensor 1, bus cable 2, DCS bus control unit 3, air cooling tower radiator 4, indirect dry cooling tower 5.
The specific embodiment: a kind of indirect dry cooling tower radiator temperature field online monitoring system, it comprises bus type temperature sensor 1, bus cable 2 and DCS bus control unit 3, each air cooling tower radiator 4 air intake places on indirect dry cooling tower 5 are equipped with bus type temperature sensor 1, and each air cooling tower radiator 4 air outlet slit places are equipped with bus type temperature sensor 1.The bus type temperature sensor 1 that is located at air cooling tower radiator 4 air intake places is connected with DCS bus control unit 3 by a bus cable 2, and the bus type temperature sensor 1 that is located at air cooling tower radiator 4 air outlet slit places passes through a bus cable 2 and is connected with DCS bus control unit 3.