How to deal with the blockage of household heat exchanger

If the scaling is not serious, thermal shock method can be used: firstly, close the inlet and outlet valves of cold water, introduce heat medium for a period of time, close the heat medium valve, turn on cold water, and repeat several times to see white scale; If the scale is serious, take out the copper tube and bake it with a welding torch, and the scale will come down.

Heat exchanger (also known as heat exchanger or heat exchange equipment) is a device used to transfer the heat of hot fluid to cold fluid to meet the specified process requirements, and it is an industrial application of heat transfer and heat conduction. Heat exchangers can be classified in different ways. According to its operation process, it can be divided into three categories: partition type, mixed type and regenerative type (or regenerative type); According to the compactness of its surface, it can be divided into dense and non-dense types.

Extended data:

Fault handling

In the production process, due to the erosion of water, cavitation and the corrosion of trace chemical media, leakage often occurs at the weld of heat exchanger tube sheet, which leads to the mixing of water and chemical materials, and the temperature in the production process is difficult to control, resulting in the formation of other products, which seriously affects the quality of products and reduces the grade of products.

After the leakage of condenser tubesheet weld, enterprises usually use the traditional repair welding method to repair it. The internal stress in the tubesheet is easy to produce and difficult to eliminate, which leads to the leakage of other heat exchangers. After pressing, checking equipment repair, repeated repair welding and experiments, it takes 2-4 people several days to repair. After being used for several months, the weld of the tubesheet will corrode again, which will bring waste of manpower, material resources and financial resources to the enterprise and increase the production cost.

Through the corrosion resistance and erosion resistance of polymer-rich composite materials and the pre-protection of the new heat exchanger, not only the weld and sand holes of the new heat exchanger are effectively solved, but also the corrosion of chemicals on the metal surface and welding points of the heat exchanger after use is avoided. In the future regular maintenance, polymer-rich composite materials can also be used to protect exposed metals.

Even if there is leakage after use, it can be repaired in time by rich Shi Lan technology, which avoids the influence of long-term surfacing maintenance on production. It is precisely because of this meticulous management that the probability of heat exchanger leakage is greatly reduced, which not only reduces the equipment procurement cost of heat exchanger, but also ensures the product quality and production time and improves the product competitiveness.

Baidu encyclopedia-heat exchanger