The boiler sewage discharge is a boiler water contaminated by salt and residue in the boiler.
Operation procedure
1. Before discharge, ensure that discharge is carried out under the premise of high water level and low load.
2. First open the blowdown valve in front of the furnace, and then slowly open the blowdown valve in back of the furnace. Remember to open this step slowly, the purpose is to warm the pipe (especially in winter operation), the second is to prevent sudden opening, accidents (such as connecting gasket leakage caused by accidents).
3. Slowly open the blowdown valve after the furnace to fully open, and then close the valve, open the blowdown valve after the furnace again, and then close, repeat this operation two to three times (generally three times), open the valve time control in 2~3 seconds. Finally, close the blowdown valve in front of the furnace.
4. Carry out the above operations on the same sewage discharge.
5. After the completion of the overall blowdown work, the boiler liquid level should be reduced by 20~30cm
Gas oil steam boiler with pressure, belongs to special equipment, whether the boiler operation or inspection and maintenance, we should pay attention to. What checks need to be done before restarting the boiler? Today we will explain in detail:
1.Pressure gauge, level gauge
Check whether there is any abnormality, the installation of bend pipe and connecting pipe and the opening and closing of intermediate valve. Whether the level indicator shows the correct water level, whether the drain valve status of the level gauge column is correct, and whether the pressure gauge has a legal inspection mark within the term.
2. Safety valve, release valve, release pipe
Check whether the opening pressure has been adjusted to the specified opening pressure and whether the drainage pipe is properly installed. Check whether the drain pipe is blocked and whether there are any preventive measures.
3. Sewage discharge device Check whether the opening and closing of the blowdown valve is flexible, and whether the lining of the packing cover has enough room for adjustment. Check whether the blowdown pipe is abnormal.
4. Steam valve
Check their opening and closing status for abnormalities
5. Air valve
After hydrostatic test to full water state, starting point furnace until steam, must be kept open
6. Boiler pipeline
Check whether the connection, drainage and insulation of steam pipe and water pipe meet the requirements. After scaling the boiler will overheat, creep, deformation, bulging, serious overheating tube burst.
There are many kinds of fuels used in boilers, and different fuels differ in calorific value, cost, etc., so what are the main types of oil gas fired boilers?
Divided by fuel: 1. Gas-fired boiler: gas, liquefied gas, biogas, city gas and other gases as fuel; 2. Oil-fired boiler: light oil, heavy oil and so on are used as fuel;
Divided by medium: 1) Steam boiler: widely used in industries that need steam to provide heat sources, such as food, chemical, building materials, bags Clothing, medicine, textile and other industries.
2) Hot water boiler: widely used in residential, residential, schools, hotels, flowers and vegetables greenhouses heating, bathing, domestic water, etc.
Divided by appearance: Vertical oil-fired gas boiler (this kind of boiler capacity and footprint is relatively small, so it is more flexible); Horizontal oil-fired gas boiler (This kind of boiler is relatively large in capacity and appearance, and occupies a large space).
Attention of gas boiler commissioning: 1. Pay attention to fuel Before the boiler is used, check whether the gas meets the prescribed requirements, and ensure that the gas supply pipeline, valve and other unimpeded and no leakage occurs.
2. Pay attention to water supply Boiler water supply system is complete and normal, meet the boiler water standards and quality, need to do a good job of water quality monitoring.
3. Pay attention to the control system Gas boiler adopts PLC control system, check the indicator light, touch the button to start and stop and so on is in normal state.
4. Arrange debugging personnel reasonably and check all kinds of tools required for debugging work. Check inside and outside after debugging to prevent tool parts from falling down.
According to the form of boiler and combustion mode, there are: 1. Placement mode: horizontal W, vertical L, horizontal H; 2. Combustion position: internal combustion N, external combustion W (Note: chamber combustion furnace S); 3. Number of POTS: single drum D, double drum S; 4. Whether atmospheric pressure: atmospheric pressure C; 5. Combustion chamber structure: water pipe S, fire pipe H; 6. Grate mode: Fixed grate G, fixed double grate C, movable hand grate H, chain grate L, reciprocating grate W; 7. Fuel type: Y (oil), Q (gas);
Among them, W represents horizontal or external combustion or reciprocating grate; L stands for vertical or chain grate; S stands for chamber burner or double drum or water pipe; C means atmospheric or fixed double grate In addition: LDR, WDR type respectively stand for vertical and horizontal electric heating boiler, R stands for hot water, but not for hot water boiler, LDR, WDR type also have electric heating steam boiler.
For example: WNS2-1.0-Q, divided into WNS series, rated evaporation of 2 tons, rated working pressure of 1.0Mpa, Q gas.
Boiler type code naming is not complicated, but sometimes easy to confuse its meaning. When you are buying a boiler and you do not understand, we suggest asking the boiler manufacturer.
Starting burner is the first step of normal operation of boiler, burner is also one of the most important auxiliary engines of gas boiler. The boiler may also fail to start if the burner fails. So, how to identify and eliminate burner failure? Xinda Boiler for your answer.
Ignition Fault
If the boiler burner fails to ignite after three consecutive starts, it is judged to be ignition fault. The troubleshooting operations are as follows: 1, if the pressure of natural gas can not be maintained at 3-5kpa, too high or too low will appear the phenomenon of non-ignition. 2. The damper of the burner is too large 3, when using the burner, the ignition voltage device does not ignite, or the ignition electrode is too dirty or wrong position 4. The boiler valve set fails 5. Ignition controller fails
Flameout Fault
It refers to the sudden fire extinguishing during the normal operation of the burner. Troubleshooting operations are as follows: 1. Unstable air source 2, if the boiler is running, the flame detector is faulty, can not normally detect the flame, there will be flameout. 3, power supply instability or lack of equal circuit fault
Xinda boiler adopts Italian imported combustion machine, and collocation of automatic combustion system, to achieve high intelligent ignition, only through the operation of the control system, you can complete the complex combustion mechanism.
Steam generator is a mechanical equipment that uses the heat energy of fuel or other energy to heat water into hot water or steam. It belongs to small equipment and is also a kind of steam boiler. Its water volume is less than 30 liters, which belongs to the steam boiler exempt from inspection. According to the regulations of Boiler Safety Technical Supervision, the water volume is less than 30 liters, which is not within the scope of boiler supervision.
Steam boiler is through the combustion of fuel to release heat energy, and through the heat transfer process, the heat transfer water, so that the water has a certain temperature and pressure of steam heat exchange equipment, widely used in the production of factories and enterprises. It belongs to special equipment, high requirements for enterprise qualification, product safety, and the need for annual inspection.
The difference between a steam generator and a boiler in a nutshell is that a steam boiler contains a steam generator, but a steam generator is not a steam boiler.
Generally speaking, the rated thermal efficiency of 1 ton boiler is 0.7MW (700KW), 0.7mw heating area is regional differences, heating 50~70W/㎡, 1 ton hot water boiler heating area is generally 6000~10000 ㎡. Now some areas also stipulate heating 32W /㎡, 32W can be nearly 15,000㎡, the specific design should leave a margin.
Conversion formula: 600,000 kcal/h ≈1ton/h≈0.7MW
Advantages of hot water boilers: This type of boiler achieves the advantages of full combustion, no pollution, convenient operation, and convenient installation; this type of boiler has high thermal efficiency, large output, strong load adaptability, high degree of automation, convenient operation, safe and reliable operation, and is high-efficiency, low-consumption, low-pollution green products.
We believe that many customers in the purchase of steam boiler, have heard a lot of boiler manufacturers talk about the need to equip boilers with softeners. For the steam boiler, what is the necessity? Today we will introduce the water softener in detail.
1.Soft water refers to water that has been softened and deoxygenated by the equipment. Soft water treatment can reduce the content of calcium and magnesium salts in tap water, mineral water and other hard water, so that the water quality can meet the requirements of boiler equipment.
2.Boiler using soft water advantages: 1) When the boiler uses the water softener, it greatly saves the waste of a lot of fuel. When the boiler boils water, there will be a thick layer of scale slowly, for the working pressure of 1.4mpa boiler will form 1 mm scale, it will waste 8% of the fuel. Not only the waste of fuel, but also the pollution of the environment.
2)Water softener can improve thermal efficiency and reduce output. When scale occurs on the evaporation surface of the boiler, the output of the boiler will be reduced because the heat from the fire side cannot be transferred quickly to the feed water side. If the water is not treated properly, when the boiler scale occurs, the boiler steam will be greatly reduced.
3)Using a water softener will reduce boiler maintenance. When a large amount of scale is produced in boiler pipes, it is difficult to remove. Scale will cause boiler leakage, deformation, corrosion and a series of hazards. It not only damages the boiler, but also consumes a lot of manpower and material resources to overhaul, not only shortens the operation time, but also increases the overhaul cost.
4)The application of water softener effectively reduces the occurrence of accidents. For such as the selection of softening water equipment, must be in line with the principle of quality, safety, in order to ensure that the water softening processing can play an effective role.
According to the equipment requirements of steam boiler, the use of water softener is one of the necessary conditions to ensure the stable operation of the boiler. Therefore, professional boiler manufacturers will emphasize to customers that water softeners should be equipped.
The tonnage conversion between gas steam boilers and gas hot water boilers. Many users do not know well, and they use the term “ton” uniformly. In fact, for hot water boilers, “MW” should be used to indicate that the tonnage and model should be more appropriate.
The power of the hot water boiler is MW, 1T = 0.7MW = 720kW = 600,000 kcal
The consumption of boilers per hour is the focus of many users’ attention, which is related to the cost of the user unit for the boiler. Generally speaking, the measurement of boiler consumption is mainly depending on the operating efficiency. The higher the operating efficiency of the boiler, the lower the consumption, and the less cost. Henan Xinda’s gas boiler operating efficiency is generally more than 98%. For example, 1 ton of gas boilers consumes about 70 cubic meters per hour. It is a very low gas consumption cost in the entire boiler market.
