Secondly, I don't understand that what you did for your graduation thesis is what you first came into contact with. What's your major? It doesn't match what you learned.

Add 1.

This topic is nothing but to let you know some common sense and logic of system operation.

For example, after the furnace goes out, those things should be turned off automatically, which ones should be turned on, and what is the order of wind, coal and water systems, etc. Logical safety chain

I can't bear to add 1 to you:

FSSS (Furnace Safety Monitoring System) is a boiler furnace safety monitoring system, which can also be called boiler management system.

No matter whether it is a coal-fired, gas-fired or oil-fired boiler, it is always possible to cause fuel accumulation or sudden interruption for various reasons, and then a large amount of fuel will flood in, causing deflagration in the boiler, which may cause serious damage to equipment and casualties, seriously endangering the safe operation of power plants. For large-capacity boilers, the deflagration caused by the accumulation of combustible mixture in the furnace often occurs within a few seconds, and the operators have no time to react. At the same time, with the increase of unit capacity and the increasing complexity of equipment, there are many items to be controlled, and even the most skilled operators will inevitably make operational mistakes, so FSSS system appears.

The FSSS system includes the following main safety functions:

(1) Purge before boiler ignition. Before ignition, start the induced draft fan and blow it with 30% rated air volume for about 5 minutes. Its purpose is to pump out the combustible materials stranded in the furnace, so as to avoid deflagration during ignition.

(3) Introduction of main fuels. The above two items belong to burner management.

(4) Continuous monitoring. During operation, the combustion situation is monitored by various detection elements, such as flame detectors and pressure switches. If there is any abnormality, output an alarm signal to remind the operator to pay attention.

(5) Emergency stop. In case of emergency, such as gas turbine load rejection, boiler fire extinguishing, etc. , immediately send out the main fuel trip signal, namely MFT, and then cut off all the burning fuel. Whenever the safety of boiler equipment is in danger, operators can directly start MFT without waiting for FSSS to start tripping.

(6) Purging after combustion. Purging should be carried out after the boiler trips and before re-ignition.