Online indirect air cooling high-back-pressure heat supply machine unit back pressure control system and method
A technology for heating units and control systems, applied in engine control, mechanical equipment, steam engine installations, etc., can solve problems such as the inability of back pressure to effectively achieve DCS online adjustment, insufficient back pressure value optimization, and impact on unit safety, etc. Thermal economic benefits, improvement of dynamic regulation process, effect of optimized configuration
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[0026] The present invention will be further described in detail below with reference to the drawings and specific embodiments.
[0027] See figure 1 , The equipment for the back pressure control system of the indirect air-cooled high back pressure heating unit provided by the present invention includes the low pressure cylinder 1, the dual temperature zone condenser 2, the indirect cooling tower 3, the DCS control system 4, the frequency conversion circulating water pump 5, and the frequency converter. 6. Flow measuring device 7, thermal resistance 8, pressure transmitter 9.
[0028] Under high back pressure heating conditions, the A side cooling medium of the dual temperature zone condenser 2 is heating network circulating water, the B side cooling medium is circulating water, and the variable frequency circulating water pump 5 is a high back pressure heating reform in the original expansion unit system. A newly added water pump based on the circulating water system. The variable...
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