How high pressure boiler tubes work?

High-pressure boiler tubes are mechanical devices designed to generate high-pressure steam by converting thermal and kinetic energy.

Typically, a high-pressure boiler tube comprises the boiler body, combustion system, heat exchange system, and control system. Fuel such as fuel oil, natural gas, or coal is burned in the boiler, releasing heat that raises the temperature of water inside. As the water heats up, it transforms into steam.

Within high-pressure boiler tubes, water and steam circulate through a network of pipes. Initially, water passes through a heat exchanger where it absorbs heat from burned flue gases. This heated water then enters the boiler's piping system, moving towards the steam generator where it undergoes further heating to convert into steam.

In the steam generator, water is rapidly heated above its saturation point to produce high-pressure steam. This steam is conveyed through boiler pipes to equipment or systems requiring steam for power or heating purposes.

A control system monitors and adjusts combustion processes, water levels, pressure, and other parameters in real-time to ensure safe and stable operation of the high-pressure boiler tubes.

The working principle of high-pressure boiler tubes involves the use of electric current and heat conduction to heat water. Nickel-chromium alloy heating cores within the tubes generate heat when electricity is applied. This heat is then conducted to the inner surface of the tube shell, heating the water circulating on the outer wall of the tube to achieve the desired temperature.

There are two main heating methods for boiler tubes: dry heating and water immersion heating. Dry heating involves the heating core being exposed to air, offering high efficiency but requiring timely water replenishment to prevent overheating and damage. Water immersion heating, where the heating core is fully submerged in water, is suitable for continuous heating operations and provides better control over temperature and pressure.