What are the applications of large cross-section multi-channel folding pipes in the power industry
Source：
k3958.cn Release date： 2025-07-07
Information summary：The large cross-section multi-channel folding tube is a type of heat exchange element with a special structure. Its "large cross-section" and "multi-channel" design give it significant advantages in terms of thermal conductivity efficiency, fluid distribution uniformity, etc. It is mainly used in the power industry for scenarios that require efficient heat dissipation, heat exchange, or fluid tran
The large cross-section multi-channel folding tube is a type of heat exchange element with a special structure. Its "large cross-section" and "multi-channel" design give it significant advantages in terms of thermal conductivity efficiency, fluid distribution uniformity, etc. It is mainly used in the power industry for scenarios that require efficient heat dissipation, heat exchange, or fluid transmission. The specific applications are as follows:
1、 Application in the cooling system of power equipment
1. Transformer cooling device
Function: The transformer generates a large amount of heat during operation. The large cross-section multi-channel folding tube can serve as the core component of the cooler, quickly removing the heat from the transformer winding and iron core through the internal circulation of cooling oil or water.
Advantages:
Multi channel design increases the contact area between fluid and pipe wall, improves heat exchange efficiency, and avoids local overheating;
A large cross-sectional structure can reduce fluid resistance, decrease pumping energy consumption, and adapt to high flow cooling requirements (such as large power transformers);
The flexible structure of the folding tube can alleviate the stress caused by thermal expansion and contraction, and improve the reliability of the equipment.
2. Generator stator/rotor cooling system
Application scenario: In hydrogen cooled or water-cooled generators, folding tubes can serve as flow channels for cooling media (water or hydrogen) to directly cool stator windings and rotor cores.
characteristic:
Multi channel evenly distributed fluid ensures temperature balance in various parts of the generator and improves power generation efficiency;
The large cross-section design supports high flow rate cooling and adapts to the heat dissipation needs of the generator during high load operation.
2、 Application in power plant boilers and thermal energy systems
1. Boiler economizer and air preheater
Economizer: Utilizing the waste heat from boiler exhaust to heat water, the folding tube multi channel structure can enhance the heat exchange between exhaust gas and water, improving energy utilization efficiency (such as reducing exhaust gas temperature and minimizing heat loss in power plant boilers).
Air preheater: By heating the combustion air through flue gas, the multi-channel design ensures full contact between air and flue gas, improving combustion efficiency and reducing fuel consumption.
2. Waste heat recovery device
In gas steam combined cycle power plants, large cross-section multi-channel folded pipes can be used to recover exhaust heat from gas turbines, heat steam or other media, form secondary energy utilization, and improve the overall efficiency of the power plant.
3、 Application in special equipment in the power industry
1. Cooling of high-voltage switchgear
High voltage circuit breakers, GIS (gas insulated switchgear) and other equipment generate heat when breaking high currents. Folding pipes can be used as internal cooling pipelines to dissipate heat through oil or gas circulation, ensuring the insulation performance and operational safety of the equipment.
2. New energy generation equipment (such as energy storage systems)
In large energy storage battery packs, the folding tube can serve as the core component of the liquid cooling plate, which uniformly removes the heat generated during the battery charging and discharging process through a multi-channel design, avoiding thermal runaway of the battery and extending its service life (such as the thermal management system of lithium battery energy storage power stations).
4、 Application in the pipeline system of the power industry
1. Main steam pipeline and reheated steam pipeline
The main steam pipeline of supercritical and ultra supercritical power plant boilers needs to withstand high temperature and high pressure. Large section folding pipes can reduce steam flow resistance and enhance pipeline creep resistance by optimizing the flow channel structure (folding structures can alleviate temperature stress).
2. Condensed water recovery system
In the condensate water pipeline of a steam turbine, a multi-channel folding tube can improve the flow efficiency of condensate water, and accelerate the temperature rise of condensate water through surface heat exchange, reducing energy loss.
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