Maintenance and service of fuel gas burners
1 Fuel Burner
Filter - For fuel burners, it is required to clean the basket filter between the tank and the pump. Regular cleaning of the filter keeps the fuel from reaching the pump smoothly and reduces the potential for component failure. Also check the filter for signs of excessive wear or damage.
Pressure Regulating Valve - Check the fuel pressure regulator or pressure relief valve to determine if the surface of the lock nut on the adjustable bolt is clean and removable. Static mixer Pipe filter If the air filter finds dirt or rust on the surface of the screw and nut, repair or replace the regulator. Lack of maintenance fuel regulators may cause burner work to be hindered.
Oil pump - check the oil pump to determine if its seal is intact, internal pressure remains stable, and replace broken or leaking seals. If hot oil is used, it is necessary to determine whether all the oil pipes are in good condition. If there are longer oil pipes in the oil route, check whether the installation route is appropriate. Replace damaged and poorly insulated tubing.
Burner - For fuel burners, clean the "y" filter. Good heavy oil and residue filtration is the key to preventing clogging of injectors and valves. Check the pressure difference on the burner to see if it works properly and if the oil pressure is within the proper range. This will ensure that the fuel pressure can be accurately read after adjusting the burner. Adjust the extension of the atomizer on the nipple and adjust and detect the low oil pressure switch.
When using heavy oil, check the fuel heating and control device and check the oil temperature switch on the burner tube set. Consult the manufacturer with the required oil viscosity to ensure that the burner is working properly and regularly check that the viscosity of the heavy oil or residual oil used meets the requirements.
It is also necessary to clean and lubricate the valve connection. If the joints are sticky or too rough, repair or replace them with suitable fittings.
Finally, clean the nozzle as required by the manufacturer.
2 Natural Gas Burner
Main gas source - For natural gas fuel burners, check the main air source regulator to ensure that the line is intact. Do not adjust the regulating valve of the gas company. The gas company will assist in the cleaning, maintenance and adjustment of the main gas source regulator. If there is a sensing line, check it for damage.
Filter - If you have installed a "y" filter before controlling the regulator, be careful to clean it.
Control regulator—check the control valve on the gas burner to see if the adjustment screw is easy to adjust. Make sure all outlets and screens are not blocked.
Burner - Check the gas tube set to confirm that the manual switch adjustment is sensitive and that the valve handle is installed. Check if the barometer is working properly. Accurate pressure display is critical when adjusting gas burners. Rotate the low pressure and high pressure switches to confirm their operation. The valve connection needs to be cleaned and lubricated. If the connection is sticky or rough, replace the appropriate accessories. If the burner is equipped with a detachable pipe, it should also be cleaned.
3 burners for other fuels
In addition to the above fuel, there are many types of fuel for the burner. Burner manufacturers can assist in providing ** maintenance schedules and steps for burners with other fuels and determine the best maintenance plan.
4 Do not ignore oxygen supply
Once the maintenance schedule for the fuel supply system and burner has been determined, check the system's oxygen supply. The oxygen supply to most burners is achieved through a fan or fan assembly system.
Compressed air - Many burners require compressed air for proper operation. Check first whether the compressor can provide the pressure required by the burner. Clean all filters on the pipeline and check for leaks. If any, repair it in time.
Combustion/atomizing air blower – Check combustion or atomizing air blower inlet Whether guarding is installed or not, and working environment is satisfactory. Repair blower housing leaks and damage. Observe the operation of the blades to see if there is too much noise and vibration, if any can be eliminated by adjusting the blades. Check the connection between the fan outlet and the burner air inlet to repair possible leaks.
For belt driven blowers, lubricate the bearings regularly and tighten the belt. Determine that the blower can produce the rated pressure and detect the current intensity. Clean and lubricate the air valve connections and adjust the valves to see if the operation is smooth.
Main fan - check whether the entrance of the main fan is equipped with protective devices and whether the working environment meets the requirements. Repair the leak on the fan. Observe the situation when the blades are running to see if there is too much noise and vibration. If these phenomena can be eliminated by adjusting the blades.
Make sure the required air pressure is reached, clean and lubricate connections, adjust the air valve to see if the operation is smooth.
Inducing air (exhaust) - Determine if the exhaust flap control is working properly and the settings are correct. Lubricate the damper joints to see if they operate smoothly. Check the damper blades for wear.
Ignition device - Clean the ignition device nozzle and check if the spark gap of the ignition electrode is normal.
Components - Clean the flame detector and determine if it is properly viewed and cooled properly.
5 Coordination of Burners and Other Parts of the System
The burner's maintenance program includes the burner's commissioning, and a well-tuned burner will enable greater efficiency. The portable combustion analyzer provides accurate information on the working conditions of the burner. Typical burner tuning methods include fuel analysis and a series of tunable adjustments to achieve optimal operating performance of the burner while maintaining combustion power. Basic commissioning can be completed in one day or less and completed before various tests are performed.
The burner is commissioned after the complete burner maintenance program is completed, which is especially important at the beginning of equipment operation. Commissioning burners should be under normal conditions. The fuel sample should be extracted in the fuel tank so that the burner operation can be accurately and accurately described.
The burner is commissioned based on the sampling information of the flue gas. Any adjustment of air or fuel will affect the smoke emissions. The smoke component can be studied and the combustion efficiency can be analyzed. The following table lists the combustion products and their causes.
Regular burner maintenance procedures are necessary to avoid downtime and extend the life of the combustion system. Combining some of the steps listed above with the recommendations made by the burner manufacturer can determine an effective maintenance procedure. This will not only reduce the losses caused by breakdowns and maintenance, but also improve the combustion efficiency and save fuel expenses.