PLC in the thermal power plant fuel preparation system 0 replies,204 views #1
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Member Since: Dec,2010
Posted 20 Dec 2010 00:51
Preparation of a thermal power plant in Henan Province fuel and heating system is a large-scale power generation captive power plant fuel transport system, composed by the four conveyor belts. The old system uses relay - contactor control, electrical equipment, Henan Province, a large volume of fuel for thermal power plants and captive power plant heating system is a large-scale power generation fuel transport system, composed by the four conveyor belts. The old system uses relay - contactor control, electrical equipment, large volume, high failure rate, repair capacity, low efficiency. Because the system of automatic control of conveyor belt four high demand, the recent use of programmable logic controller (PLC) system for this transformation, in combination with exposure to control, to solve the traditional relay contactor control many problems. The new system is small, less failure, wiring is simple, convenient installation and maintenance, anti-interference ability, operational safety and reliability. A system function composed of thermal power installed capacity of 1.1 system 13000KVA, all use of coal power generation, installed four large-scale boilers, the minimum of 75 tons, the largest of 165 tons, the coal-fired capacity, transport belt length, series and more, transport control and protection blocking more. Thermal power plant fuel preparation systems are overhead grab cranes, coal feeder, belt conveyor, belt blower, Separators, scraper conveyor, bars sieve, ring hammer crusher, coal-bit sensor, boiler position switch, etc. composition. Figure 1 is a block diagram of four belt transport system. Figure 1, four block diagram of the belt transport system control requirements of 1.2 for thermal power plant fuel system is a large belt transportation system, heavy work burden, with more than...
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