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The operation steps of the oil-fired gas hot water boiler for sewage discharge

Time : 2021-12-15
For oil-fired and gas-fired hot water boilers, it is required to perform blowdown once a week after startup, which is very beneficial for improving the efficiency of the boiler and reducing the amount of scale generated. So how should the oil-fired and gas-fired hot water boiler operate correctly when it blows off the sewage? Zhengzhou Fangkuai Boiler Factory will answer for you.
       1. Pollution discharge is carried out when the load is low;
       2. When draining sewage, first open the primary valve (close to the boiler's drain valve), then slightly open the secondary valve to preheat the drain pipeline, and fully open the secondary valve when there is no water hammer to drain;
       3. After the sewage is drained, close the secondary valve first, then close the primary valve, and then switch the secondary valve once to release the residual water between the two valves;
       4. Boilers using the same blowdown main pipe should be blown off individually.

At the same time, the firemen should also conduct roving inspections of the oil-fired and gas-fired hot water boiler:
       1. Pressure and temperature are normal, safety accessories and measuring, control instruments and protection devices are sensitive and reliable;
       2. There are no abnormal phenomena such as bulging, deformation, leakage, etc. at each visible part of the pressure component;
       3. The furnace wall has no cracks, tilts or collapses, the steel frame is not red or deformed, the furnace door is complete, and the switch is flexible;
       4. There is no leakage (including internal leakage) in water pipelines, sewage pipelines and valves, and the valve switching is flexible;
       5. The boiler combustion conditions are good, and there is no abnormal noise in the furnace (mainly the sound of water leakage);
       6. The combustion equipment and other rotating machinery are in good condition, cooled and lubricated normally;
       7. The indicators of coal, water, electricity and other measuring instruments are normal;
       8. The environmental protection facilities are operating normally;
       9. If an abnormal phenomenon is found, the cause should be quickly identified and eliminated in time;
       10. If it cannot be eliminated temporarily, report to the leader in time, and take corresponding measures to strengthen monitoring and prevent accidents;
       11. The timely handling of abnormal phenomena found in the patrol inspection should be recorded.
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