Technical Discussion-----Issue 15 (Rewards for active participation)
Thread Content
“What are the conditions for the “abnormal boiler water circulation” alarm to be triggered?
When all the boiler water pumps stop or the differential pressure of all the boiler water pumps is less than 0.06 MPa, a start command is sent to the other boiler water pumps simultaneously. If the boiler water pumps do not start within 5 seconds, or if they start but the differential pressure remains below 0.06 MPa, the \"abnormal boiler water circulation\" protection mechanism is activated.
Agree with the view from the 2nd floor; adjustment of the output from the three chimneys of the main boiler is necessary
When all the boiler water pumps stop or the differential pressure of all of them is less than 0.06 MPa, start commands are sent to all three boiler water pumps simultaneously. If no pump starts within 5 seconds, or if a pump does start but the differential pressure remains below 0.06 MPa, the \"abnormal boiler water circulation\" protection mechanism is activated
When all the boiler water pumps stop or the differential pressure of all the boiler water pumps is less than 0.06 MPa, start commands are sent to all three boiler water pumps simultaneously. If the pumps do not start within 5 seconds, or if they start but the differential pressure remains below 0.06 MPa, the \"abnormal boiler water circulation\" protection mechanism is activated. Information found on the website! ! !
When all the boiler water pumps stop or the differential pressure of all the boiler water pumps is less than 0.06 MPa, start commands are sent to all three boiler water pumps simultaneously. If the pumps do not start within 5 seconds, or if they start but the differential pressure remains below 0.06 MPa, the \"abnormal boiler water circulation\" protection mechanism is activated.
When all the boiler water pumps stop or the differential pressure of all the boiler water pumps is less than 0.06 MPa, start commands are sent to all three boiler water pumps simultaneously. If the pumps do not start within 5 seconds, or if they start but the differential pressure remains below 0.06 MPa, the \"abnormal boiler water circulation\" protection mechanism is activated.
Boiler water circulation can be divided into forced circulation and natural circulation. As those mentioned below have pointed out, forced circulation is primarily influenced by the circulation pump. Circulation problems can occur in both natural circulation and forced circulation due to scaling and blockages in the throttle tubes or the water pipes leading to the header.
Thank you to the experts upstairs; I’ve learned another trick.
Abnormal boiler water circulation can lead to stagnant flow, backflow, or low flow rates in certain pipes； During maintenance, the inside of the pipe is blocked by detached scale or foreign objects ； Due to improper operation, coking occurred outside the tubes, resulting in uneven heating and disrupting the normal water circulation. Therefore, when all the boiler water pumps stop or the differential pressure of all the boiler water pumps is less than 0.06 MPa, start commands are sent to all three boiler water pumps simultaneously. If the pumps do not start within 5 seconds, or if they start but the differential pressure remains below 0.06 MPa, the \"abnormal boiler water circulation\" protection mechanism is activated.
When all the boiler water pumps stop or the differential pressure of all the boiler water pumps is less than 0.06 MPa, start commands are sent to all three boiler water pumps simultaneously. If the pumps do not start within 5 seconds, or if they start but the differential pressure remains below 0.06 MPa, the \"abnormal boiler water circulation\" protection mechanism is activated.
“\"Abnormal boiler water circulation\" protection activation: 1. When all boiler pumps stop operating； II. When the operating differential pressures of both boiler pumps are below 0.06 MPa, start commands are sent to all three boiler pumps simultaneously; if no boiler pump starts within 5 seconds ； III. When the operating differential pressure of both boiler pumps is less than 0.06 MPa, start commands are sent to all three boiler pumps simultaneously; if they fail to start within 5 seconds despite this, the differential pressure remains below 0.06 MPa. IV. The boiler water circulation pump is running, but the outlet valve is not open.
Answer: When all the boiler water pumps stop or the differential pressure of all of them is less than 0.06 MPa, start commands are sent to all three boiler water pumps simultaneously. If the pumps do not start within 5 seconds, or if they start but the differential pressure remains below 0.06 MPa, the “abnormal boiler water circulation” protection mechanism is activated.