Basic knowledge of combustion engine maintenance
Basic knowledge of burner maintenance:
1. Keep boiler furnace clean and ensure air circulation in boiler room.When disassembling the burner, the inspection switch should be cut off first.
2. When the door is locked tightly, the door shall be unshaken and secure;
3. It is prohibited to burn paper and garbage with the boiler without special declaration;
4. The gas inlet pressure shall not exceed the maximum allowable pressure of the valve set indicated on the burner nameplate;
5. Keep the surroundings of the burner clean, so as not to absorb debris into the burner.
When the combustion engine is started, it must be guaranteed that:
1. The check switch is on, check the continuous phase;
2. The valves on the air supply pipeline and the heating system pipeline are open;
3. The gas pressure is within the pressure range required by the burner;
4. The regulating plate in the boiler flue must be open (if installed);
If the burner does not start:
1. Check whether the valve on the air supply pipe has been opened;
2. Close the start button and check the setting position of the thermostat, but do not adjust the inside of the thermostat;Check if the fuse is blown.
Combustion engine does not burn after ignition:
1. Master the starting condition of the combustion engine, but it is absolutely not allowed to start the combustion engine forcibly;
2. Do not reignite the burner before the residual gas in the boiler is exhausted;
3. If the burner has been unable to ignite, professional personnel should be asked to solve.
During the shutdown of the burner in summer:
1. Cut off the main inspection and the valve on the natural gas pipeline, if the combustion engine should be repaired in a short time.
2. Note that the newly installed chimney must be checked whether it is firm when the burner is working, and no vibration or other abnormalities shall occur;
3. Whether the newly used ignition device can ignite the gas;
4. If the ignition failure of the combustion engine requires restart, it must wait for about 10 minutes or so, until the residual gas in the furnace dissipates before restart the combustion.Multiple ignition is strictly prohibited.
5. When the boiler is started and ignited, it is strictly prohibited for all personnel to stay in the front and back of the boiler.
EBICO EBS... series burner is the fourth generation of cpmpact type and electronic proportional control digital burner researched and development specially for asphalt mixing plant equipment. This burner is designed according to the three major ideas of European products on safety, environmental protection and saving energy, as well as special environment and fuel requirements of China market. It is a new generation of advanced intelligent electronic proportional control machine which is launched to the market after being approved by lots of test and qualified data. This model is scientific and rational in design, compact in size, complete in structure and low in failure rate. Through the application of many new technologies, it can save 5%~12% fuel and at most about 40% electrical energy; it is an ideal product suitable for both fixed asphalt mixing plant and mobile asphalt mixing plant.
EBICO offers different types of gas valve sets, including the main fuel quick automatic cut-off valve, ignition fuel quick automatic cut-off combination valve, pressure controller, gas valve leak detector.
Maintenance
The frame is fully movable; both the frame and the control system have full-open doors, so the machine can be maintained easily after moving the main frame forward and backward or opening those doors. Such quick and efficient maintenance service owes to the design experience of EBICO integration module system.
From the perspective of heat transfer calculation, the measures to reduce the smoke exhaust temperature are analyzed from the following aspects: increasing the heat exchange surface, improving the heat exchange efficiency of the heating surface, improving the heat exchange temperature difference by using a lower temperature source, and reducing the influence of corrosion on the heat exchange efficiency.As gas boiler host first meet the low nitrogen flame furnace volume and size requirements, the second host of convection heating surface is a main export in order to reduce the smoke temperature, general control in 150 ~ 250 ° C, in order to avoid the smoke temperature increases along with the flue design difficulty of heat preservation, high smoking temperature is too low will cause corrosion in furnace convection heating surface forming wall condensation, therefore, furnace domestic demand to design proper heating surface, the physical dimension more representative chamber size.Increasing the heat exchange surface should mainly consider increasing the heat exchange area of the equipment in the rear of the boiler, which is more favorable for rapidly reducing the exhaust temperature.The second is to have a lower inlet water temperature can be used for heat exchange temperature difference characteristics;Third, corrosion resistant materials can be used to improve its service life.The new structure of efficient heat exchange mainly adopts the form of staggered tube arrangement, efficient heat exchange finned tube, plate heat exchanger, etc., to increase the flue gas disturbance and contact surface, reduce the heat resistance of flue gas stratification, and improve the heat exchange efficiency of medium and flue gas.
Clean energy consumption and utilization is a systematic problem involving power supply, power grid and power load.At present, the consumption of clean energy in China is mainly faced with the following difficulties: first, the reverse distribution of resources and demand. Most of the landscape resources are distributed in the "three north" region, while the water energy resources are mainly concentrated in the southwest region, while the power load is mainly concentrated in the central, eastern and southern regions.Second, the rapid development of clean energy does not match the growth rate of electricity consumption in recent years. In recent years, with the active support of national policies, the installed capacity of clean energy, especially wind power and photovoltaic power generation, has maintained a fast growth rate, far exceeding the growth rate of electricity consumption of the whole society.Third, the processing of wind power and photovoltaic power generation is affected by natural conditions, and there are relatively large fluctuations. After large-scale grid connection, it brings great challenges to power system dispatching and operation.At present, China's power system is not fully adapted to such a large scale of volatile new energy access.
——Author：ebico