Moisture and dehumidification solutions for hydroelectric power stations

Hydroelectric power plant, that is, hydroelectric power plant, is the use of hydroelectric resources to generate electricity; In contrast to power plants that generate electricity by burning fossil fuels such as coal, oil and natural gas

There are advantages and disadvantages such as small impact on the environment, power generation efficiency of more than 90%, low power generation cost, fast power generation start, power generation can be completed within a few minutes, easy adjustment, and the lowest cost per unit of output power

Therefore, at present, China vigorously develops hydropower resources, and the construction of major hydropower projects is also in rapid development.

It is understood that the problem of moisture and dew is a problem that has plagued major hydroelectric power plants for many years; Due to the influence of topography and other factors, many proposed, under construction and already built large-scale hydropower stations are chosen

In the form of an underground powerhouse. Because hydropower stations are generally deeply buried underground workshops, they are not exposed to sunlight, and the surface of the envelope structure is relatively wet, and the relative humidity of the air is often larger. Especially hydropower stations

The relative humidity of the turbine layer and volute layer even reaches more than 90%, and condensation often occurs in the plant.

Wet underground space not only affects the service life of mechanical and electrical equipment, but also adversely affects the health of staff. Some large hydroelectric units are equipped with hydrogenerators when operating

The surface of the spindle is easy to produce water beads, which will enter the water guide bearing along the cover of the oil basin, bringing hidden dangers to the safe operation of the generator set. Daqing pump pump room pipeline and electrical equipment, pipeline, electrical equipment

After condensation is generated on the backup surface and water droplets are formed, the damage rate of the sealing materials, metal components and electrical components of the pump is greatly accelerated, causing safety hazards to the stable operation of the pump.

Every year from April to October, most of the hydropower plant main workshop wet, dew is very serious, the ground, wall, pipe surface constantly dew outflow, resulting in the generator stator rod end

Corrosion and misoperation of the electrical components in the water supply chamber affect the normal production of the system, which is common in hydroelectric power plants. In the past, some large hydroelectric power plants were designed to solve such problems

At home and abroad, most of the method of wrapping the insulation material layer in the supply and drainage pipes is used, but because the temperature difference between the air and the cold object is too large, and the water pipe is in contact with the coating for a long time, eventually leading to the surface temperature of the coating

Close to the temperature of cold objects (cold water), condensation still exists;

Another method is to use the inner layer to wrap the thermal insulation material, the outer layer to wrap the organic glass steel or aluminum alloy plate, so that although the outer surface condensation is reduced, but no matter how sealed, it can not be completely sealed

Discharge the wet air between the surface of the cold object and the insulation layer and the entry of the external wet air, so after a period of time, open the insulation layer, most of the surface of the water pipe has been corroded, and the condensation problem has been transformed into

Corrosion problem, so from the practice of major power plants can be seen: the use of coating or thermal insulation layer methods are not ideal, can not solve the fundamental problem.

In response to this situation, through the continuous exploration and exploration of hydropower industry technicians found that the most simple and effective way to solve the problem of moisture and dew is to use dehumidifier. Dehumidifier is currently the most

It is a professional moisture-proof dehumidification equipment, which can quickly extract excess water in the air, control the moisture content in the air within the ideal range, and can carry out a full range of various items or equipment

Indirect dehumidification, leaving no dead ends.