What is involved in the annual inspection of boiler diesel burners?

The heat transfer oil furnace light oil burner is mainly used for oil heating and mineral oil processing, storage and transportation. The oil refinery uses heat transfer oil to preheat the cold material, which has been successfully used in the heating solvent and extractant evaporator in the lubricating oil production process. The following is the test method of the thermal oil boiler diesel combustion engine in production: 1. Pull wire inspection. It can check the degree of bending of the boiler diesel burner drum, collection box and pipe. 2. Drilling inspection method. In the inspection of the boiler diesel burner, if it is necessary to measure the residual thickness of the steel plate, including partial corrosion of the boiler diesel burner steel plate, or suspect the interlayer of the steel plate, and check the crack depth and development direction, when there is no non-destructive testing instrument, drilling can be used method. 3. Visual measurement of appearance. This method requires only simple tools and basically relies on the inspector's senses to find the problem. It can find defects on the surface of the steel plate. Examples: corrosion, wear, visible cracks, deformation, weld holes, edges and insufficient welds. 4. Hammering test. According to the sound and vibration of the small vertical elastic force, the metal defects, cracks, looseness and severe corrosion of the boiler diesel burner can be correctly judged, and the welding quality. 5. Sample inspection. The sample is designed according to the size and shape of the part, made in advance with a thin iron plate or cardboard, and the actual shape and size of the inspection part are checked to check the actual shape and size of the part. The components meet the requirements. 6. Light inspection. This method can be used to check the uneven corrosion, deformation (bend or bulge) and coarse cracks of drums, collection boxes and pipelines. 7. Check the white powder and kerosene. When the symbol of a crack is found in the metal by hammering, this method is usually used to further check the direction and length of the crack. 8. Ruler inspection. It can check the corrosion depth of straight pipes, POTS and pan inner plates, and the height of protrusions on the plates. Safety countermeasures (1) Ensure the safety of equipment The heat transfer oil heating system should be managed as a pressure equipment to ensure that the heating equipment is intact and leak-free, otherwise the consequences will be very serious. During use, the wall thickness and compressive strength of the equipment should be measured regularly, and pressure gauges, safety valves and blow-out pipes should be installed on the equipment and pipelines. (2) Strict and safe operation When using the heat-conducting oil furnace light oil burner, the temperature should not exceed 350°C to prevent the temperature from rising above the pressure and causing danger. In order to avoid overheating of the pipe wall on the heating surface of the heat transfer oil, the flow of the heat transfer oil should be turbulent, that is, Reynolds number Rc> 10000, and have a certain speed, so as to reduce the thickness of the boundary layer when flowing over the heating surface. During the heating operation, the circulating pump with the heated body is not allowed to stop. When the thermal load is reduced or temporarily stopped, the bypass return valve should be opened to adjust the flow of the system so that the heat transfer oil in the pipe has sufficient flow and velocity. The heating furnace starts at the beginning of air preheating of the heating surface pipes and system pipes. When the ignition starts to heat up, the heat transfer oil has low temperature, high viscosity, slow speed, and thick film layer. The heating speed must be strictly controlled, generally below 40-50℃/h, in order to avoid local heat overheating. When the temperature of the circulating heat transfer oil is high but the temperature of the thermal equipment cannot be increased, the outlet temperature of the heat transfer oil should not be increased blindly, and thermal equipment, such as a scale, should be used. When using heat transfer oil, pay attention to the temperature and pressure at the beginning of the startup The relationship between. If the pressure is too high and the temperature is too low, it means that there is water and should be exhausted in time; if the pressure is low and the temperature is high, it means that the heat transfer oil is insufficient. When the system stops running, the heat transfer oil circulating pump should continue to run for a period of time. After the heat carrier is cooled, all the heat transfer oil in the system should be returned to the storage tank, especially if there is no residual heat on the heating surface. (3) Ensure the heat conduction of oil and water. It is forbidden to mix heat transfer oil with water or other low-boiling impurities and flammable and explosive substances. When starting the car, the water in the system should be drained first, and then the intake valve and check valve should be opened, and heated as required to remove the water in the heat carrier; the newly added or added heat transfer oil must be preheated and dehydrated before being added. When eliminating water, first open the air valve, and then use a small flame to increase the temperature of the heat transfer oil to 150°C at a rate of 5°C/h to allow the water to evaporate and escape. Then lower the exhaust valve and raise the temperature to 250°C at a rate of 10°C/h. During the heating process, if there is water knocking sound or high pressure, immediately open the exhaust valve to discharge water vapor, and then close the exhaust valve to start. When stopping the furnace, close the steam valve of the light oil burner of the heat-conducting oil furnace after releasing the heated material to avoid material leakage into the system. (4) Removal of coking and scaling. In production practice, it is safe for the coking thickness to be less than 2mm, and the coking layer in the furnace tube is between 0 and 1.5mm. At this time, the continuous accumulation of the coking layer is roughly balanced with the melting amount washed by the heat carrier. The thickness of the coke layer in the furnace tube can be measured by an ultrasonic thickness gauge. A filter should be installed at the inlet of the circulating pump to remove suspended polymers and carbon particles precipitated by local overheating caused by chemical changes. The filter should be easy to disassemble and replace in order to clean up the residue and impurities regularly to ensure the filtering effect. (5) Strengthening safety management should pay attention to formulating and implementing technical specifications and management regulations for the operation of hot oil heating equipment, and strictly abide by relevant laws, regulations and safety operating procedures. The heat conduction oil heating operation should have a complete emergency treatment plan, especially to prevent the occurrence of overflow, spraying materials, leakage, overload and disease operations. Once the leakage point, stop the leakage immediately and replace the insulating cotton. (6) Set up safety devices Set up temperature, pressure, flow, liquid level automatic adjustment system, alarm system and safety release device to ensure the sensitive use of instruments. During the heating operation, if the pressure suddenly rises, immediately open the exhaust valve to release the pressure, and close the valve of the heat carrier pipe to the heating device. ! If you are interested in diesel combustion engines, please contact us for a quote!