1. The defective parts in the last inspection.
2. Whether there are cracks and corrosion on the inner and outer surfaces of boiler pressure components, especially on openings, welds, edges and so on.
3. Whether the pipe wall is worn or corroded.
4. Whether there is any crack, fracture or corrosion at the brace of the boiler and the joint with the pulled element.
5. Whether the expansion port is tight, and whether there is annular crack in the expanded part of the pipe end.
6. Whether the ri...
Boiler output refers to the maximum continuous output of the boiler under rated parameters (pressure, temperature) and certain efficiency. For steam boilers, it is called rated evaporation, and the unit is tons/hour; For hot water boilers, it is called rated heat production, and the unit is MW.
What are the main factors affecting the output of gas-fired boilers? According to the analysis of ZOZEN Boiler engineers, there are many reasons for the insufficient output of gas-fired boilers,
...
Horizontal steam boiler structure
The horizontal internal combustion boiler has a large-diameter shell, in which a furnace is arranged, and the burner is placed in the furnace to form an internal combustion chamber. Both ends of the furnace are respectively connected with the front and rear tube plates, and the smoke tube is arranged between the front and rear tube plates, so there is no need for bricklaying walls outside the boiler. The structure is mainly composed of boiler shell, furnace, f...
Different users have different requirements for boiler configuration. For example, some users need NOx emission less than 30mg/Nm3, and some users only need it less than 80mg/Nm3. The better auxiliary equipment configuration is used, the price of boiler will naturally rise.
Different users have different requirements for the configuration of the whole boiler system, and the brand and quantity of auxiliary machines also affect the price. The better the brand, the more expensive the price. For ex...
The boiler in the bathhouse provides hot water for bathing and heating, and it is an essential product in bathhouses. Generally, it is hot water boiler. With the elimination and banning of coal-fired boilers, many users choose energy-saving and environment-friendly gas-fired boilers. Then how much is a suitable gas-fired boiler?
First of all, we have to determine the boiler plan. Bathhouses mainly need to supply hot water and winter heating all the year round. There are two main options: one se...
Safety accessories of the thermal oil heater include safety valves and bursting discs, stop valves, pressure gauges, etc.
The basic configuration of low nitrogen thermal oil heater system includes the following main parts:
1. Combustion system: including furnace, burner, ignition device, etc.
2. Oil circulation system: circulating oil pump, oil injection pump, storage tank, expansion tank, etc.
3. Control system: complete with boiler control box.
4. Air-smoke system: refers to the s...
Raw water: refers to water that has not been disinfected and filtered, such as river water, stream water, well water, reservoir water, etc.
Feed water: refers to the chemical water delivered from deaerator to boiler by feed pump.
Make-up water: Make-up water for boiler is to make up the lost part or externally supplied part after completing a steam-water cycle, so that the boiler can always operate at a safe water level.
Recycling condensing water: When the heat energy of steam or hot water i...
Water and electricity are not available;
Circulating water pump is not running;
Water flow switch is different;
The 200V 380V power supply is not connected;
The valve is not opened;
The controller switch is set incorrectly;
There is a problem with the controller circuit;
There is something wrong with the programmer;
Leak detection has not been checked;
Air pressure switch impassability;
Air pressure switch 1-3 impassability;
Overtemperature protection and combustion heat protection;...
