How high-pressure boiler tubes and heating tubes work?

How do high-pressure boiler tubes work?

High-pressure boiler tube is a mechanical device used to generate high-pressure steam. Its working principle is based on the conversion of thermal energy and kinetic energy.

High-pressure boiler tubes usually consist of the boiler body, combustion system, heat exchange system and control system. When fuel (such as fuel oil, natural gas, or coal) is burned in a boiler, the heat of combustion heats the water in the boiler. By heating, the temperature inside the water increases, forming steam.

In high-pressure boiler tubes, water and steam are circulated through a system of pipes. The water in the boiler first passes through the heat exchanger, which absorbs the heat energy in the burned flue gas and heats the water. Subsequently, the heated water enters the boiler piping system and is sent to the steam generator to convert the water into steam.

In the steam generator, water is heated and rapidly heated above the saturation temperature to form high-pressure steam. High-pressure steam is transported through boiler pipes to equipment or systems that require steam supply to provide power or heating.

The control system is used to monitor and adjust combustion process, water level, pressure and other parameters in real time to ensure the safe and stable operation of high-pressure boiler tubes.

What are boiler heating tubes?
Boiler heating tube is a tubular element, mainly composed of two parts: tube shell and heating core. The heating core is usually made of nickel-chromium alloy, which has good rigidity, strong corrosion resistance, high temperature resistance and good thermal conductivity, and can well meet the needs of boiler heating. The tube shell plays the role of heat insulation, stabilizing the heating core and protecting safety.

Working principle of boiler heating tube:
The working principle of boiler heating tubes is to use physical principles such as electric current and heat conduction to heat water. Specifically, when power is applied, the nickel-chromium alloy heating core in the heating tube will generate heat, and then conduct the heat to the inside of the tube shell through conduction between the heating core and the tube shell, so that the water is heated on the outer wall of the tube shell to achieve desired temperature.

Generally, there are two types of heating methods for boiler heating pipes, namely dry heating and water immersion heating. Dry heating means that the surface of the heating core is in contact with the air, while water immersion heating means that the heating core is completely immersed in water for heating. Among them, dry heating has high efficiency, but water needs to be added in time during the heating process to prevent the heating tube from overheating and damage. Water immersion heating is suitable for long-term heating operations and can have better control in terms of temperature and pressure.

Application areas of boiler heating tubes:
Boiler heating tubes are widely used in various types of boilers, such as industrial boilers, ship boilers, floor heating boilers, central air conditioning boilers, etc. Because heating tubes have the advantages of safety, reliability, easy operation, high efficiency and energy saving, they have been widely used in modern industrial production.

To sum up, the boiler heating tube is one of the indispensable and important components in modern industrial production. Its working principle is to use physical principles such as electric current and heat conduction to heat water to reach the required temperature. Different heating methods are suitable for different situations, and heating water through heating tubes can greatly improve the efficiency and quality of industrial production.

Read more: Which material is used for boiler tubes?