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Songhua River Cooling Tower Repair and Leakage Plugging and Anti-corrosion Construction Manufacturer>Power Plant Natural Ventilation Cooling Tower Repair and Leakage Plugging Construction Unit:
>Jiangsu Jinfeng High Altitude Engineering Co., Ltd.
>Technical consultation:
>Website:
>Email: @
>Natural ventilation cooling tower
> Overview
> Our company’s unit seating spray area is a cooling tower with a height of . The outlet water temperature of the cooling tower under summer frequency % meteorological conditions is. Since the supply water for the circulating water is gray water and the water quality is poor, in order to facilitate cleaning, the cooling tower adopts a trough water distribution system.
> Principle
>High-temperature water passes through the shaft to the main water tank, is distributed to the distribution water tank, and is then sprayed by the nozzle. The high-temperature water sprayed downward comes into contact with the upward flowing low-temperature air, resulting in contact heat transfer. At the same time, evaporation heat transfer occurs due to the evaporation of water. The water molecules on the surface of the hot water are continuously converted into water vapor. In this process, heat is absorbed from the hot water, causing the water to be cooled. The function of the filler is to increase the contact area between water and air and prolong the contact time. Therefore, the filler is required to be highly hydrophilic and have low ventilation resistance. The function of the water eliminator is to separate and discharge water droplets, reduce water loss, and eliminate the impact of floating droplets on the surrounding environment.
>Water Distribution Layout
>The water distribution system consists of a main water tank, a water distribution tank, and a water tank. According to the principle of evenly distributing water throughout the tower to maximize the effective cooling area of the cooling tower, the cooling tower is equipped with a central shaft and a main water tank. One of them distributes water to the inner circumference, and the other main water tank is responsible for water distribution to the periphery of the cooling tower. The main water tank is arranged in a radial pattern. The filler is plastic, the nozzle adopts reflective type III B plastic splashing device, and the water eliminator adopts wave type water eliminator.
>The two pressure water inlet steel pipes of the cooling tower supply water to the inner and outer layers of the composite shaft located in the center of the tower respectively. The cooling tower water distribution system is arranged in inner and outer zones, and the inner and outer areas each account for % of the cooling tower water spray area. , the inner layer
>The shaft supplies water to the inner periphery, and the outer layer shaft supplies water to the periphery. In summer, one tower bears the water volume of each unit. In winter, the inner water distribution system stops operating, and all water flows into the peripheral water distribution system to increase the density of peripheral water spray and prevent the cooling tower from freezing in winter. The water distribution inside and outside the cooling tower is controlled by valves on the circulating water pipe outside the tower. There is a bypass pipe system on the water inlet pipe of the cooling tower. When the heat load of the startup unit is small in winter, the circulating water will be discharged directly into the pool through the bypass pipe to prevent the water spray device from freezing.
> Equipment technical specifications are shown in the table:
Unit natural tower equipment specifications (table)
< > Water tower type

> Natural ventilation counterflow cooling tower


< > Sprinkling area

>


< > Water tower height

>


< > Air inlet height

>


< > Design circulating water volume

> ( Single tower)


< > Catchment tank depth

>


< > Catchment tank water storage capacity

>


< > Evaporation loss (summer heating/winter pure condensation)

> / / (single tower)


< > Wind loss (heating in summer/pure condensation in winter)

> / / (single tower)


< > Sprinkling height

>


< > Number of nozzles

> Each


< > Tower tank diameter

>


< > Throat diameter

>

< br/> < > Tower top diameter

>


< > Shaft height

>


< > Internal and external shaft diameter

> /


< > Main water tank top elevation

>


< > Design inlet and outlet water temperature

> Under summer frequency % meteorological conditions, the water tower outlet water temperature is ℃


< > Water distribution Method

> Trough type


< > Packing type

> Wave


< > Filling material

> Filling


< > Filling layer height

>


< > Drain eliminator type

> B/


< > Drain eliminator material

> Drain eliminator< br/>

< > Number of nozzles

> Each


< > Nozzle type

> Reflection type III


< > Nozzle diameter

>


< > Nozzle material

> B Engineering Plastics


>
>
Quality Standards
> The main distribution tank should be intact without breakage, and the tank should be clean and free of silt and microorganisms. The cover plate on the tank should be complete and without defects.
> The nozzle is firmly installed in the sink, clean and smooth, without aging, breakage or falling off, and the water permeability is %.
> The packing should be placed neatly and intact, and the scale, microorganisms and debris on it should be removed in time.
> The water eliminator should be clean and complete without looseness, breakage or falling. It should be fully covered in the tower and the gaps should not be larger than 1. The drain eliminator hook should be firm and free of corrosion and breakage.
> Steel ladder trails and all railings should be free from rust and breakage.
> The storage tank should be clean and free of sludge and debris.
> Each water supply gate, bypass door, etc. should be opened and closed flexibly, and the openings should be strictly indicated clearly and accurately. After repair, the surface is painted to prevent corrosion. There is no leakage at the packing of each joint surface, and the door pit is clean.
> The bypass pipes of each water supply pipe should be smooth and free of rust and leakage, the brackets should be firm and the needle rollers should be complete, and the welding joints of the expansion joints should be firm and free of cracks.
> The anti-corrosion layer on the inner wall of the tower is intact, and there is no thick accumulation of moss on the surface. The railings on the top of the tower are intact and have no rust or breakage. The lightning protection equipment is well grounded and effective. There are no cracks in each pillar of the tower, and there is no peeling of cement on the surface.
>The grating at the outlet of the water tower has no corrosion, deformation, cracking or other defects. The mesh is smooth and non-clogging. The electric hoist can be lifted and lowered flexibly, and the braking is reliable.
>
Power plant natural ventilation cooling tower maintenance and plugging construction unit:
>Jiangsu Jinfeng High Altitude Engineering Co., Ltd.

>Technical consultation:
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