How to diagnose the gas boiler to produce steam when water shortages already inferior to the minimum water level height limit, but when the water meter in height can still see the water, mild sentence less water; when the water level was observed visually count is less than the height of the water when sentenced to severe water shortages. Status as summarized below: (1) conventional water drum divided highly water-inferior height defined; (2) low water levels prompt alarm will sound, lights light initiated; (3) the temperature of superheated steam to improve the water vapor; (4) conventional water not provided, steam flow is lower than the value; (5) steam temperature increase smoke emissions.
When gas boiler ignition, need to pay attention to what matters is the primary determinant of the ignition gas boiler started to master boiler ignition precautions to ensure the safe and stable operation of the boiler. 1, for gas-fired boilers, the ignition time if not successful, the need to purge the furnace flue, before a second firing. 2, in order to prevent a gas explosion, gas boilers not only to purge the boiler furnace and flue gas channel before the start, the need for a purge gas supply pipes. The gas supply duct media typically purged with an inert gas (such as nitrogen, carbon dioxide, etc.), and the purge of the boiler furnace flue with a certain flow rate is the flow rate of air. Case 3, in the rear of the boiler did not take anti-corrosion measures or condensation water collection, etc., gas boilers should avoid long-term operation at low load or low-parameter case. 4, the combustion gas boiler adjustment process, to ensure the quality of the combustion, it is necessary to detect smoke components, to avoid too high excess air and incomplete combustion. Generally, the gas-fired boiler during operation, the carbon monoxide content should be less than 100 ppm, and at high load operation, the excess air ratio should not exceed 1.1 to 1.2; under low load conditions, the excess air ratio should not exceed 1.3.5 , real-time attention should fireman switch case of a gas valve. Gas line not leak, if unusual circumstances, such as the boiler room abnormal odor, not open burners, ventilation should be checked to exclude odor, check valves, only put into operation is determined normal. 6, a gas boiler for liquid fuel with air, special attention should be ventilated boiler room. Because of severe liquid gases than air, in case of a leak can easily cause condensation of liquid and spread on the ground, resulting in a vicious explosion. 7, after a period of time or inspection line outage, when the single-column hydraulic machine into operation again, should open the vent valve, bleed time, deflation time should be determined according to the length of the pipeline and the gas species. If a longer boiler downtime, it should cut off the gas supply valve, close air release valve. 8, the gas pressure is too low and not too high, to be run within the set range, the specific parameter provided by the boiler manufacturer. When the boiler running for some time, found that the gas pressure is below the set value, should contact the gas company. Burner operation for some time, should be checked line filter is clean, as a lot of pressure drop, there may be too many impurities in the gas, the filter is clogged, washing should be removed, if necessary, replace the filter. 9, should comply boiler unit boiler manufacturers operating instructions provided by the manufacturer and the burner, and the description should be placed in a convenient place for easy, for inspection. When there are unusual circumstances and can not solve the problem, depending on the nature of the problem promptly contact boiler plant or gas company, to conduct maintenance by a professional maintenance staff. 10, shall comply with the provisions of the relevant gas. Not free to fire the boiler room, prohibited welding, gas welding and other operations in the gas pipe roadside.
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Gas-fired steam boiler commissioning steps: Commissioning gas steam boiler design is an important part of a comprehensive test of the host and supporting equipment design, manufacture, installation, commissioning and quality of production preparation is to ensure boiler safety in the future, reliable and economic operation an important program.[email protected]
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