Before the boiler electrostatic precipitator enters the electric field, check the overall ash deposition and the ash deposition on the airflow distribution plate, and clean them. Check whether the rapping mechanism is flexible and whether the bearing of the rapping shaft is worn. If the excessive wear causes the deviation of the hammerhead striking position to exceed 50 mm, replace the shaft to check whether the tightness of the cathode cable is appropriate, how about the electrical corrosion, whether the corona cable is short circuited or broken, and replace it according to the specific situation; Check whether the anode plate is warped or deformed due to long-term operation under high temperature; erase Insulating sleeve Check the surface carefully for small cracks, and check and clean the power supply system.
Working principle of boiler electrostatic precipitator After the dusty gas enters the equipment from the air inlet at the top of the equipment, it passes through the cyclone separator at a high speed, making the dusty gas rotate downward along the axis adjustment spiral, using centrifugal force to remove the coarser particles of dust, effectively controlling the initial dust concentration entering the electric field. Then, the gas enters the electric field through the lower ash hopper for work. Since the sectional area of the lower ash hopper is several times larger than the sectional product of the inner tube, according to the principle of constant rotating moment, the radial wind speed and the axial wind speed sharply reduce to produce a zero speed interface, which makes the heavy particle dust in the inner tube settle in the lower ash hopper, reducing the concentration of the dust entering the electric field. The low concentration dust laden gas condenses on the Yin Yang comparison plate through electric dust collection, The collected dust is transported by the air lock ash discharge device after dust cleaning and vibrating.
Boiler electrostatic precipitator Power Supply By control box, boost transformer The alignment device is made of metal plates with different geometric shapes, which is called the dust collection device. The performance of boiler electrostatic precipitator is affected by three factors: dust property, equipment structure and flue gas flow rate. The specific resistance of dust is an index to evaluate the conductivity, which has a direct impact on the dust removal efficiency. The specific resistance is too low, and it is difficult for the dust particles to stay above the dust collector, causing them to return to the air flow. If the specific resistance is too high, the charge of dust particles reaching the dust collector is not easy to discharge, and the formation of voltage gradient between dust layers will cause partial breakdown and discharge. All of these conditions will cause the decrease of dust removal efficiency.
The boiler electrostatic precipitator adopts advanced amplitude modulation high-frequency power supply to ensure the transformer conversion efficiency and long-term operation of the high-frequency transformer in a better designed frequency range without being affected by the change of working conditions. Pure DC power supply and continuous current mode are adopted to provide stable corona current, overcome the disadvantage that FM mode cannot achieve continuous current, and also better overcome the corona blocking caused by high dust concentration in the electric field, with perfect protection functions: flashover, open circuit, short circuit, overload, undervoltage, overheating, IGBT Oil temperature, communication failure and other emergency signals can be processed and started, and the operation and display can be remotely controlled. The newly installed amplitude modulation high-frequency power supply near the front electric field is equipped with a four point isolation switch Cabinet and required Cable One upper computer and PL control cabinet (Siemens S7200) are added for three electrostatic precipitators.
If you need to contact our contact, Manager Lu * * * Website: www.hbmshb.com
