As the main equipment of urban heating, the safety, inspection and maintenance of heating boilers are very important whether before or in the process of heating.Especially after the boiler runs for a period of time, it will inevitably appear wear, ash, corrosion, leakage and other phenomena. If it is not found to be solved in time, it will inevitably bury hidden dangers to the safe operation of the boiler.

The safety valve is a basic accessory to ensure the safe operation of the boiler. Its main function is to automatically open when the pressure in the boiler exceeds the specified requirements, release the excess pressure, and make the boiler return to the normal working pressure state.If the safety valve is found to leak during maintenance, the first thing to do is to analyze the cause of leakage, and then take measures.

Generally, there are three reasons for valve leakage: ① dirt and impurities fall on the sealing surface;② sealing surface damage;③ Because of improper assembly or pipeline load and other reasons, the concentricity of parts is destroyed.If the company staff can not solve the problem, it is suggested to call the manufacturer and ask them to arrange professional and technical personnel to help solve the problem.

For the maintenance inspection of the pressure gauge, first remove the pressure gauge and send it to the metering department for verification and seal;Secondly, remove and check the water trap elbow, the wire buckle should be intact;Remove and check the three-way cock, grind the sealing surface to ensure that it is tight and does not leak, and the connecting thread should be intact;Dusting and painting the trap elbow and the three-way plug valve;The pressure gauge should be installed in a position convenient for observation, replacement and flushing, and should be protected from high temperature, freezing and vibration;When the pressure gauge is put into use, turn the handle slowly to the normal position of the pressure gauge after the condensation water accumulates, to prevent the pressure gauge from sudden impact.

Check the shell of the water level gauge. It shall not be deformed. The contact surface of the glass plate shall be smooth and smooth.The glass plate of the water level gauge should be wiped clean to keep the surface clean for easy observation of the water level;Water level gauge cock shall not leak, leakage, leakage should be found in time to grind or replace;Lighting is in good condition.

The scale in the water level alarm should be cleaned to prevent excessive scale from affecting the drop of the float ball and causing no alarm accident at low water level;Check whether the float ball leaks frequently;During the operation, the water level alarm should be tested regularly. If abnormal, it should be dealt with immediately to ensure that the alarm is sensitive and reliable in the operation.

Boiler because of its running environment is more special, more safety is of vital importance in the operation of it, so to ensure the safe operation of boiler, regular inspection and maintenance of its running short of one cannot, so the boiler's managers were also put forward higher request, need careful coordination in the process of management, so as to ensure the safe use of boiler, to give full play to its best performance.