The fan must be able to calibrate the air volume, inspect the uniformity of air distribution, measure the resistance of the air distribution system and the air layer. material, as well as testing the dynamic characteristics of fluidized bed gases. I'm talking about the air distribution system and measuring the resistance of material layers. Perform a complete dynamic inspection of dampers and auxiliary machinery of the smoke and air system. Whether the auxiliary machines of the smoke and air system can operate normally and the flexibility and accuracy of operation of each damper will directly affect the trial operation of the system. entire unit. Such as: the stability of operation of each auxiliary motor, start and stop characteristics, etc. Especially the direction, the flexibility of the air door damper switch, the gap between the local opening et the value shown on the computer screen, etc. Through the cold ventilation test, a comprehensive dynamic inspection of each auxiliary machine and the damper baffle was carried out, and the problems detected were handled in a timely manner, thus laying a solid foundation for trouble-free trial operation at the same time. 'future. In a newly installed boiler there will inevitably be debris in the flue, which could block the meter tube and damage the transmitter and damper baffle. In cold weather, blowing a high volume of the furnace, smoke and air ducts can clear debris in the furnace, smoke and air ducts. The tightness test is carried out on the boiler body, after the installation work of the smoke and air ducts is completed, and all fans are tested and operate normally. Start the induced draft fan, primary fanses and secondary and the high pressure fan in sequence, and adjust the oven pressure to a slightly positive pressure. Then use a negative pressure inspection for the smoke system and a positive pressure inspection for the air system. Observe for leaks and keep records of leaks. Once all fans have completely stopped, the installation company will eliminate the faults. Air volume device calibration includes total primary air volume (primary air volume entering the furnace. Primary fan inlet (1 point) ∮ 2859 × 5 pipes), primary air volume left and right pilot burners ∮ 1953 × 5 pipes (2 points) and slag cooler. The primary air volume of the hot and cold primary air ducts is ∮377×5 (4 points in total), the secondary fan inlet is 2144×5 ducts (1 point), and the high pressure ducts of air are 325×6 (1 point),with a total of 9 measuring points. Calibration of air volume measuring devices. Since all air ducts are round tubes, only one measuring hole is required in the diameter direction, so each boiler is equipped with a total of 9 temporary measuring holes. In order to approximate the measurement results to the true average flow velocity, the equal-section weighted average method is used to determine the transverse average flow velocity.
Diesel generator room ventilation includes two parts, daily ventilation and working ventilation.
Daily ventilation: the number of ventilations in the engine room of air-cooled and water-cooled generators should be 6 times, and the number of ventilations in the oil storage room should not be less than 3 times. For computer rooms that use fire extinguishing systemsgas vent, after a fire, this ventilation system is responsible for discharging indoor exhaust gases, but it is not accidental ventilation. To ensure personal safety, it is recommended to set the start button for accidental ventilation.
Working ventilation: Water-cooled diesel generators must consider the amount of air required for oxygen consumption in operation; Air-cooled generators have a large volume of cooling air and generally use a natural air intake. Diesel engines have their own fan. pressure emissions, but diesel generators The pressure height of the built-in fan is only about 150 Pa. When the shaft resistance is large, a fan should be added to overcome the shaft resistance. the air inlet shaft is large, an air inlet fan is added; if the resistance of the exhaust shaftt is large, an exhaust fan is added.
The diesel generator room uses gas extinguishers. Solenoid valves should be installed on the air inlet and exhaust channels. When a fire breaks out in a room and gas fire extinguishing is triggered, these valves are closed in a chain to ensure the fire extinguishing effect.
Diesel generator exhaust is a pressurized exhaust with high combustion gas temperature and high air flow velocity. Combustion gases must be vented at high altitude. The flue must be thermally insulated and equipped with a shock-absorbing support. should be installed.
Diesel generator rooms should pay attention to ventilation and smoke exhaust, otherwise it will affect the use of the generator and cause damage to the generator. For businesses that can't afford power outages, the damage to the generator is very serious. bad thing.