Function of air compressor room in thermal power plant

Description of the role of air compressor room in thermal power plants

in the thermal power plant, the air compressor room is the core auxiliary facility to ensure the safe and stable operation of the whole plant equipment, and the compressed air provided by it is an indispensable power source and control medium in the power generation process. The following is a detailed analysis of the importance of air compressor room in thermal power plants from the perspective of functional positioning, key role and operation management.

Core Function Orientation of 1. Air Compressor Room

the air compressor room compresses the ambient air to a specific pressure through the air compressor to generate clean and stable compressed air, mainly serving the following systems:

1. pneumatic control system
   • provide power for key operations such as boiler combustion adjustment, turbine speed regulation, valve opening and closing, and ensure precise control of process parameters.
   • For example: boiler air door adjustment, coal feeder control, dust collector pulse blowback, etc. are dependent on compressed air drive.
2. Equipment maintenance and overhaul
   • provide pneumatic tool power source (such as pneumatic wrench, sandblasting machine), support equipment maintenance, pipeline cleaning and other operations.
   • Compressed air can also be used to purge the surface of the equipment to avoid dust accumulation and cause safety hazards.
3. Instrumentation and Monitoring System
   • provide back-blowing air source for pressure gauges, flow meters, level gauges and other instruments to prevent blockage of measuring elements.
   • Support calibration and blowback of on-line monitoring equipment (e. g. flue gas analyzer) to ensure data accuracy.

Key Role of 2. Air Compressor Room in Power Plant

1. ensuring continuity of power generation process
   • compressed air, as an "invisible transmission line", runs through the main and auxiliary systems such as boilers, turbines and electrical systems, and any cut-off of air in any link may lead to the shutdown of the unit.
   • For example: boiler air door out of control will cause combustion fluctuations, steam turbine speed control system failure will threaten the safety of the unit.
2. Improve equipment operation reliability
   • by drying and filtering the compressed air, the corrosion and jamming of pneumatic components can be avoided and the service life of the equipment can be prolonged.
   • The stable air supply pressure (usually set to 0.6~0.8 MPa) ensures the precise execution of control instructions and reduces the risk of misoperation.
3. Support safety production and environmental protection standards
   • provide standby power source for fire fighting system (such as pneumatic fire monitor) and emergency escape device.
   • Compressed air is used for pulse dust removal of bag filter to maintain dust removal efficiency ≥ 99.9% and ensure flue gas emission standard.

Key Points of Operation Management of 3. Air Compressor Room

1. gas supply quality control
   • equipped with cold dryer, suction dryer and multi-stage filter, control the pressure dew point of compressed air below -20 ℃, oil content ≤ 0.01ppm, dust particle size ≤ 0.1 μm.
   • Daily inspection of compressed air quality, regular discharge tank condensate, to avoid water vapor, oil damage to the system.
2. Equipment redundancy and emergency configuration
   • adopt "N +1" redundant design (e. g. 3 air compressors running, 1 standby) to ensure that the gas supply is not interrupted in case of single failure.
   • Equipped with diesel-driven emergency air compressor, it can still maintain the operation of key pneumatic systems in the event of power failure of the whole plant.
3. Energy efficiency optimization and intelligent monitoring
   • the loading rate of air compressor is adjusted by frequency conversion technology to avoid no-load energy consumption, and the comprehensive power saving rate can reach 20% ~ 30%.
   • Deployment of intelligent monitoring system, real-time monitoring of air pressure, temperature, vibration and other parameters, early warning equipment failure.

4. Conclusion

air compressor room is the "invisible artery" of thermal power plant, and its function runs through the whole process of power generation:

• foundation support: Provide stable air source for pneumatic control, equipment maintenance and instrument monitoring.
• Security: Ensure that the unit is controllable under extreme conditions through redundant design and emergency configuration.
• energy efficiency link: Help power plants reduce costs and increase efficiency through gas supply quality control and intelligent operation.

Enterprises should incorporate the air compressor room into the core equipment management system, strengthen management from the whole chain of design, selection, operation and maintenance, ensure its long-term stable operation, and provide a solid guarantee for the safe and efficient operation of power plants.