Some customers in the use of glass fiber reinforced plastic cooling tower in the process of bubble phenomenon, cooling tower foam is certainly not normal, then what is the cause of glass fiber reinforced plastic cooling tower who appear this phenomenon.
If the glass fiber reinforced plastic cooling tower is pure liquid is impossible to form a stable foam, glass fiber reinforced plastic cooling tower slurry foaming is due to the system into other components, increased the mechanical strength of the bubble liquid film, that is, increased the stability of the foam, resulting in the occurrence of foaming overflow phenomenon.
The production of foam in glass fiber reinforced plastic cooling tower must have three conditions. First, only when the gas and the liquid are in continuous and full contact can the foam be produced. Secondly, when the density difference between the gas and the liquid is very large, the foam in the liquid can quickly rise to the liquid level, and the foam is formed over time. The smaller the surface tension, the easier the liquid is to foam.
The bubble in the glass fiber reinforced plastic cooling tower foam is polyhedral. The liquid film of the cooling tower is curved at the junction of the polyhedral liquid film. The existence of the pressure difference of the curved liquid surface accelerates the drainage of the flat liquid film between the bubbles to the boundary, making the liquid film thinner. When the liquid film thickness is lower than the critical value, it breaks. However, when the solution contains surface active substances or foaming substances, the instability of the foam system weakens and the repairing ability of the liquid film increases, to prevent the liquid film further thinning, so that the liquid film to maintain a certain thickness, glass steel cooling tower in the pure liquid foaming only related to its surface tension, but because of the pure liquid foaming, the liquid film can be connected to each other, so that the formation of bubbles continue to expand, and eventually burst.
As long as you pay attention to avoid the above situation in the work of the glass fiber reinforced plastic cooling tower, there will be no stable foam.
The air volume of glass fiber reinforced plastic cooling tower is determined according to thermal calculation, while the wind speed in the new tower is determined according to experience. The wind speed is large, the area of the tower is small, but the power cost of the machine is high. The small wind speed is large, the diameter of the tower body is large. For thin film packing, the wind speed of the cooling tower is generally within 2-3 m/s. If the tower type is determined, the wind speed can be determined according to the air volume and the tower area. According to the wind speed and resistance coefficient, the resistance loss through the glass fiber reinforced plastic cooling tower can be calculated. With the air volume and resistance loss, the fan can be initially selected. For large fans, the working point of the fan needs to be calculated, and the motor power is calculated by the air volume and wind pressure of the working point.
The purpose of aerodynamic calculation is to select the fan well, or to check whether the selected fan meets the requirements. Only when the air volume and air pressure of various fans are within a certain range, can the fans run in the high efficiency area. If the total resistance in the tower is calculated according to the design air volume to be less than or slightly greater than the resistance of the fan under the air volume, sometimes the fan blade angle can be adjusted. If the difference is large, the fan should be re-selected or the resistance of each part in the tower should be adjusted.
The resistance in the tower is mainly composed of the following 10 parts: air inlet, air guide device, air flow turning of water drenching filler into the cooling tower, sudden contraction of water drenching filler inlet, sudden expansion of water drenching filler and water drenching filler outlet, water distribution device, water remover, fan air inlet and fan air duct outlet. At present, except for some measured data of water drenching filler and water remover resistance, the rest parts are rarely measured data, and mostly belong to separate test data, the mutual influence of the resistance of each component in the tower is not considered.
The circulating water system in the glass fiber reinforced plastic cooling tower is antifreeze, and the internal circulating water can also be heated by electric heating. However, we startled silica to participate in ethylene glycol solution in the water for antifreeze maintenance. The heating consumption of recycled water is relatively large. However, with the increase of the planning of cooling tower construction, our best method is to build a relatively large indoor pool or water tank, which does not need electric heating, but also needs to participate in any chemical reagents for antifreeze.

Anti-freeze proposition:
1, in the same may be a long-term shutdown, to drain the cooling water.
2, the selection of air compression will be clean water.
Shandong Xingheng Environmental Technology Group Co., Ltd. is located in Luquantun Development Zone, Dezhou, Shandong Province, the hometown of glass fiber reinforced plastic in China. The company has three-level qualification for construction mechanical and electrical installation engineering, three-level qualification for environmental protection engineering, and safety production license. It is the first in the industry to pass ISO9001 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health management system certification, an axial fan invention patent, a fan utility model patent, EIA, three at the same time and other procedures are complete.