water tube fire tube gas fired boiler

water tube fire tube gas fired boiler

Note the water tube fire tube fired boiler operating at low load range of the boiler load change is normal: coal-fired boilers typically 70% -100% of rated evaporation; oil furnace is 60% -100% of rated evaporation. Below this range is the low-load operation. The main problem is the low-load operation, poor combustion stability, we must prevent the fire and explosion at the furnace, natural circulation boiler must also consider the safety of the water cycle. Thus, when low load operation, the boiler attention to the following aspects: 1, should be as low-load burning high volatile coal. When low volatile coal, during unstable combustion, combustion should be put into the ignition oil gun, in order to prevent possible fire. 2, input at low load the burner should be more uniform, the number of burners should not be too small, which is good for both combustion stability and prevent individual parts of the water circulation is not normal. 3, the speed should be slow changes in the load, and adjust the air volume. Note that maintain a steady wind pressure, which should be the primary air volume is too large. Burner input and deactivation operation should be slow. 4, oil-fired boiler during low load operation, since it is difficult to ensure the combustion quality of oil, should be taken to prevent droplets caused by the re-ignition of unburnt flue tail. 5, low load operation, to minimize the use of desuperheating water (mixing desuperheater), but it should not be heated Save the door shut. 6, low load operation, the exhaust gas temperature is low, the possibility of low temperature corrosion is increased. Therefore, they should put warm or hot air recirculation.

Parameters and heating in winter precautions oil-fired water tube fire tube fired boiler oil-fired boiler should set this kind of boiler, I believe we will not feel strange, because the site has its relevant articles to allow them to learn and understand this kind of boiler, and at the same time, also to know the proper use and rational use of this kind of boiler, in turn, have a good economic benefits in the economic performance of the boiler. So, based on this, then, will continue to carry out this work, the study follows. Adjustments and adjust the size of the working pressure 1. conversion or oil-fired boiler control debugging: Under normal circumstances, turn a small fire is 0.9MPa, 0.8MPa turn the fire. Automatic startup and shutdown start furnace: when the operating pressure required is 0.8-1MPa, is adjusted to 1.02MPa shutdown, 0.82NPa start furnace. Overpressure alarm: it is generally set pressure than normal shutdown automatically comparing 0.05MPa. High level alarm: Usually when the setting is the distance of the upper glass sheet is less than 25mm, water enters the alert state. Extreme low water level shutdown: Boilers different manufacturers, it will be different on the set, however, the general principle is that each water tube boilers can not fall below the nozzle. Pump automatic start-stop control: water table is generally set in the center of the vertical and horizontal 25mm. The fuel pressure setting: heavy oil is 1.8-2.2MPa, light oil is 1.6-1.8MPa. Fuel temperature set: If the light oil is not heated, if a heavy oil, will have to control the heating. In addition, daily tank temperature of 60 to 80 degrees, the burner temperature is controlled within the range of 95 ℃ -110 ℃. Exhaust Temperature: oil-fired boiler exhaust gas temperature is 220 ℃ -240 ℃, Super Smoke alarm temperature is set to about 280 ℃. 2. The oil-fired boiler which signals and parameters should be set to indicate? Oil-fired boiler, and a parameter indicative of the signal which should be set for the oil flow into the oil feed pressure, chamber temperature, chamber pressure, the boiler water level alarm limit values ​​and the like which, in addition, there may be some other parameters. Moreover, these terms of oil-fired boiler, is an important parameter, therefore, not be taken lightly. 3. The oil-fired boiler in winter precautions when heating oil-fired boilers, which on heating in winter, there are some precautions, which are as follows: the boiler room should take into account the possibility of development and expansion, between its subsidiary in position, should It does not interfere with the development of the boiler room. If the boiler room is in the factory, living area, it is generally a closed, but in their dust and the wind section, you can open layout.

Process safety valve check valve gas steam water tube fire tube fired boiler is one of the three safety accessories gas steam boiler, when the boiler pressure is too high, the pressure relief valve will automatically exhaust, gas steam boiler is the important safety equipment . The case of a new installation, overhaul, lack of consumer safety valve shutdown and restart more than three consecutive months, have had to re-check safety valve, safety valve to ensure accurate and reliable by the company safety officer, boiler technician, run operators, maintenance personnel together with the completion of the adjustment. Valve adjustment procedure is as follows: 1, the steam boiler when the gas vapor pressure close to the operating pressure of the safety valve, and retest check valve to the air motor exhaust, drainage accident flexibility and reliability of the electric valve, and the panel reinspection situ pressure gauge, the water level of accuracy, such as failure, not allowed to heat the school. 2, ready to call and check the quality of communication tools, a signal indicating whether the good. 3, adjust the safety valves, boiler pressure should be kept stable, pay attention to monitoring gas steam boiler drum level, and maintain normal. 4, steam boiler safety valve to adjust the pressure gauge in place of instructions shall prevail. If necessary using 0.4 or more for the accuracy of the gauge. 5, adjust the safety valve should be carried out only by descending. It should checksum gas steam boiler tuning high pressure safety valve, after the school seizure of the entire set of low pressure relief valve. 6, the following should be in the 0.3MPa, the movement preventing measures must do a good job of setting relatively low pressure steam boiler safety valve safety valve before adjusting. 7, by combustion, and exhaust steam adjust the degree of opening to the air slowly and smoothly up to the required setting pressure. 8, when the gas pressure steam boiler safety valve set pressure to rise if action is normal, then the action and reseating pressure values ​​recorded. If action is not correct or not action should be immediately opened to the air exhaust valve, while the combustion boiler weakened, stop boost, and buck 0.3MPa or less, re-adjust the boiler technician as required by maintenance personnel, until the compliance date. (Lead or lag 0.05MPa action is normal). 9, after the completion valve to adjust gas steam boiler, boiler 0.3MPa or less down to the lifting device and can be installed and fastened to the protective cover, a braking measure required under check valve removal, then Articles 7, 8 verify until all required safety valve calibration check is completed. 10, the safety valve to adjust the gas boiler, check the results recorded in the "safety valve to adjust the recording Visa" within the participants should verify the signatures and Internet safety valve input to the corresponding data in the ledger. During operation gas steam boiler, not only to regularly check on the safety valve, at the same time, we must regularly monitor boiler inspection to ensure that the boiler fully meet the safety requirements!

China Dunhuang International Hotel relevant responsible person said, party fast or aftermarket both in pre-sales, remained consistent patient service, we have solved many difficult problems, with fast water tube fire tube fired boiler, we are assured. --customer feedback

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