Troubleshooting and troubleshooting of diesel burner of gas heat conduction oil boiler

For the gas-fired heat-conducting oil boiler diesel burner, in the study and understanding of this heat-conducting oil boiler diesel burner , Has already started before, so that we can be timely and firmly grasp. So, based on this, and in order to promote the learning process, the following will continue so that we have certain gains and inspiration. The failure of the diesel burner of the gas heat transfer oil boiler Problem 1: The furnace does not burn. For the failure of the diesel burner of this gas heat transfer oil boiler, it involves many aspects and reasons, so the following is a detailed description. Aspect 1: The specific reason for natural gas is that there is a blockage in the gas pipeline, or there is a problem with the ignition solenoid valve, and there may be a problem with its control line. For its inspection, it is: remove the ignition solenoid valve, and then energize. When the solenoid valve moves backward, the valve core opens visually to check whether the ignition gas is normal. In this way, the malfunction of the gas and ignition solenoid valve can be eliminated. Aspect 2: The main reason for ignition is the problem of the ignition electrode control circuit or the insufficient sensitivity of the ignition electrode probe. Its detection method is to use a multimeter to detect whether it has an open circuit, etc. In addition, determine whether it is due to the rupture of the ignition electrode scale, so that the gas heat transfer oil boiler diesel burner has no ignition signal. As for the solution, it is very simple. Break the circuit and take concrete and effective measures to solve it. Problem 2: Failure of the diesel burner of the gas heat transfer oil boiler. If the diesel burner of the gas heat transfer oil boiler does not work normally, there are three main reasons: the installation position of the flame detector is incorrect or it is not working properly. Moreover, the flame plate is not in the correct position, and the air to gas ratio is not appropriate. There are three main reasons. Therefore, in view of the above reasons, corresponding measures have been taken to effectively solve the problem, so that the diesel burner of the gas heat transfer oil boiler can return to normal. Fire prevention 1. Pipe burst fire 1. The oil quality is poor and the residual carbon in the oil is too much. If the heat transfer oil is inadvertently mixed with water, impurities or other grease during storage, transportation or operation and maintenance, when the temperature of the heat transfer oil rises to 100 ℃, it will cause oil injection and fire, or the water will evaporate and generate high pressure at high temperature, resulting in The equipment exploded over pressure. Add carbon residues in the oil index. The heat transfer oil will undergo some chemical changes during the heating operation and produce a small amount of high polymer, and local overheating will produce coke. These high polymer and carbon residues are insoluble in the oil and suspended in the oil. In the operation of these substances, they will be deposited on the bottom of the drum and overheated bumps, deposited on the tube wall and overheated. Therefore, the heat transfer oil should be sampled and analyzed on a regular basis, and the quality changes of the oil products should be grasped in time, and the reasons for the changes should be analyzed. New heat transfer oil should be added regularly to make the carbon residue basically stable. The heat transfer oil added to the boiler diesel burner must be dehydrated in advance. 2. The outlet temperature exceeds the temperature and the flow rate is too low. Sometimes due to high oil temperature and engine temperature does not rise, it cannot meet production needs. Some units take the method of increasing the outlet temperature to ensure the heat supply. As a result, the outlet temperature is close to or even exceeds the maximum allowable use temperature of the heat carrier, which intensifies the degree of coking, fouling, and heat transfer efficiency. Circulate until the furnace tube bursts. In addition, too low a flow rate will cause the temperature of most or part of the tube inner wall of the heat surface to be higher than the allowable oil film temperature, and shorten the normal service life of the heat transfer oil, resulting in drums, tube bursts and overheating. Therefore, the maximum oil temperature at the outlet of the boiler diesel burner should be about 30°C lower than the working temperature of the heat carrier to prevent the oil from overheating and decomposing during use. During operation, the speed of the heat transfer oil in the radiant heating surface pipe should not be less than 2m/s, and the speed of the heat transfer oil in the convection heating surface pipe should not be less than 1.5m/s to prevent the occurrence of carbon residue, blockage of the pipe diameter and pipe wall overheat. 2. Leakage fire Due to welding quality problems, part of the welding seam of the heat medium transport monitor will fall off or evaporate in a large amount when the temperature is too high, causing pipeline vibration or even damage, leading to a large amount of heat transfer oil leakage. However, heat transfer oil has a strong permeability, especially at the flange gasket, which is more serious. Therefore, when installing, choose a qualified installation company. The pipeline connection is well welded, and the flange connection is supplemented. The screw connection cannot be used. The flange connection should use oil-resistant, pressure-resistant, high-temperature resistant high-strength graphite products as the sealing gasket . All accessories in contact with the heat carrier must not be made of non-ferrous metals or cast iron. Should steel pipe be used? Steel seamless pipes, fasteners, especially connecting bolts on the main circuit are not used. Steel drums are more suitable. Before the boiler diesel burner is ignited, the boiler diesel burner supervision office and the installation company shall conduct pressure tests on all pipes and valves until leakage is found. The heat transfer oil should circulate in the system pipeline for no less than 60 minutes, and the ignition should be performed after confirming that it is normal. 3. Power failure and fire. When the thermal oil boiler diesel burner is in normal use, the unit will occasionally experience a sudden power failure. At this time, the circulating oil pump stops working, and the coal in the furnace continues to burn, causing the boiler diesel combustion engine oil temperature to continue to rise. If the oil temperature rises If it drops too quickly, the oil temperature will be locally overheated and coking in a short period of time, resulting in excessively high pipe overheating temperature. Therefore, in the event of a power failure and other failures, all furnace doors should be opened to immediately eliminate the remaining coal in the furnace, let a large amount of cold air enter the furnace, quickly reduce the furnace temperature, and eliminate the heat source; open the drain valve of the boiler diesel combustion engine synchronously. Slowly put the high-temperature oil into the oil storage tank, and let the cold oil in the expansion tank slowly flow into the boiler diesel burner to take away heat in time. Conditional devices can be equipped with dual power sources, such as small gasoline generators, whose circuits and circulation pump circuits are switched to prevent accidents caused by high oil temperature coking in a short time after power outage. In addition, the stoker must be trained by the technical supervision department and issued a 'stoker operation certificate'. Only a licensed stoker can operate independently to ensure that abnormal situations are eliminated in time. Keep the circulating pump and the oil storage tank clean, remove the oil and dust accumulated on the surface at any time, and strictly prohibit external flying fire. ! If you are interested in diesel combustion engines, please contact us for a quote!