The operating FRP cooling tower is prone to failure due to factors such as the environment and frequency of use. Understanding the type of failure and mastering the maintenance strategy are the key to ensuring its stable operation.
As the core component of the FRP cooling tower to achieve heat exchange between air and water, the fan has a high failure rate. Common problems include fan blade deformation, motor overheating, belt loosening, etc. Blade deformation is mostly caused by long-term high-speed operation, external force impact or material aging, resulting in uneven air volume and increased noise; motor overheating may be caused by poor heat dissipation and excessive load; belt loosening will cause transmission efficiency to decrease. During maintenance, it is necessary to regularly check whether there are cracks and wear on the blade surface, and correct the deformed blades through dynamic balancing tests; clean the motor heat sink to ensure good ventilation, and adjust the motor parameters according to the operating load; adjust the belt tightness in time, and replace the new belt when it is severely worn to ensure the normal operation of the fan.
The packing of the cooling tower plays an important role in expanding the contact area between water and air. During long-term operation, impurities in the circulating water, biological slime formed by microbial reproduction, and scaling can easily cause packing blockage and reduce heat dissipation efficiency. At the same time, the filler will gradually age and become brittle due to ultraviolet radiation and changes in water temperature, leading to breakage and collapse. During maintenance, the filler needs to be chemically cleaned regularly, and corrosion inhibitors and bactericides need to be used to remove dirt and microorganisms; for aging fillers, replace them with new anti-aging and corrosion-resistant materials in time, and optimize the water distribution system to avoid local water flow concentration and accelerate filler damage.
If there is a problem with the water distribution system, it will cause uneven water distribution and affect the cooling effect. Common faults include nozzle blockage, water distribution pipe rupture, and poor rotation of the water distributor. The nozzle blockage is mostly due to poor water quality and impurities entering the pipeline; the water distribution pipe ruptures due to long-term water erosion and external force collision; the rotating parts of the water distributor lack lubrication or are stuck by foreign objects, resulting in rotation failure. In this regard, it is necessary to regularly clean the nozzle filter and install a water quality filter to improve water quality; promptly repair or replace damaged water distribution pipes, and use corrosion-resistant materials to enhance durability; check the water distributor bearings, add lubricants, and clean foreign objects to ensure uniform and stable water distribution.
The tower joints and inspection holes of the frp cooling tower are prone to leakage due to aging of sealants and external damage. The tower body is exposed to the outdoors for a long time, and the sealant will gradually crack due to temperature changes and wind force; improper operation during the inspection and maintenance process may also cause local damage. After the leakage is found, it is necessary to clean the surface of the leaking part first, remove the aging sealant and impurities, and then use a weather-resistant sealant to refill and seal; for the tower body with serious damage, glass fiber cloth and resin can be used for repair to enhance the structural strength of the tower body and prevent further leakage.
The circulating water is constantly evaporated and concentrated in the cooling tower, and the concentration of calcium, magnesium and other ions in the water increases, which is easy to form scale attached to the surface of the pipes, fillers and heat exchange equipment. At the same time, the growth of microorganisms in the water will produce slime, block the pipes, and reduce the heat exchange efficiency. To prevent water quality from deteriorating, it is necessary to regularly test water quality, control scale formation by adding water stabilizers, install side filters to filter impurities in the water, use bactericides and algaecides to inhibit microbial growth, and regularly drain and replace water to maintain stable water quality and reduce equipment failures caused by water quality problems.
Abnormal noise during operation not only affects the surrounding environment, but may also indicate equipment failure. Noise sources include unbalanced fan blades, wear of reducer gears, loose parts, etc. Unbalanced blades can lead to increased vibration and periodic noise; wear of reducer gears can produce sharp friction sounds; loose bolts can cause parts to collide and produce abnormal noises. During maintenance, the fan needs to be dynamically balanced, and worn blades need to be repaired or replaced; the wear of reducer gears needs to be checked, lubricating oil needs to be added or replaced in time, and gears need to be replaced when necessary; bolts of various components need to be tightened regularly to eliminate noise caused by looseness.
The electrical system of the cooling tower involves components such as motors, control cabinets, and lines, which are prone to failures due to moisture, short circuits, overloads, etc. Long-term exposure to a humid environment will reduce the insulation performance of electrical components, which may lead to short circuits; aging of lines and poor contact will cause the equipment to fail to start normally; overload operation will burn the motor. In daily maintenance, it is necessary to take waterproof and moisture-proof measures for electrical equipment, regularly check the insulation resistance of the lines, and replace aging lines; install overload protection devices, monitor current and voltage in real time to avoid motor overload; regularly clean the dust in the control cabinet to ensure good heat dissipation of electrical components and safe and stable operation of the electrical system.
