On the glass steel cooling tower maintenance skills and specific maintenance methods.
(1) Make operation records of each component and work flow.
When the FRP cooling tower is completed or installed and put into operation, the design unit or manufacturer shall provide all the characteristic data of the cooling tower: including thermal characteristics, resistance characteristics, water load, heat load, ambient temperature (dry and wet bulb temperature), cooling range, air flow rate, power consumption, wind blowing loss, evaporated water quantity, supplementary water quantity, concentration ratio, fan power consumption, water pressure entering the tower, etc, the relevant departments in charge of the user unit shall make operation records according to all the characteristic data and contents of the cooling tower provided by the above design unit or manufacturer.
(2) In order to test the operation effect of FRP cooling tower and its cooling capacity, indoor tests or identification tests must be carried out on the operating cooling tower at the production site. In order to ensure the normal operation of FRP cooling tower, not only scientific and technical personnel for cooling tower test research must be available, but also a complete set of test methods that conform to the specifications. Cooling tower must also be equipped with a set of test instruments and meters, such as thermometers and micropressure meters, pressure gauge, sound level meter, etc.
(3) The cold water collecting pool of FRP cooling tower shall keep the water depth of the pool to prevent cavitation. The freeboard height of the collecting pool is 15~30cm. The following is the effective volume of the pool. The water level of the cold water collecting pool shall be maintained at a fixed level. The supplementary water valve shall be adjusted as required. For cross-flow cooling tower, if the operating water level is lower than the design requirements, air baffle shall be installed below the raw water surface, to prevent air bypass, the cold water tank should be cleaned irregularly to remove the silt and adhesion deposited on the bottom of the tank, remove the debris dropped by the filler and its support, keep the grille of the suction port of the water pump clean, check the leakage of the water collecting tank irregularly, pay attention to the acid, water quality stability, whether the chemical distribution device is in normal operation, supplement water quantity, and sludge discharge are closely related to the water quality control of circulating water, the dosage should be adjusted in time according to the requirements of the system to maintain normal operation.
Cooling Tower Most of our understanding of FRP cooling tower knows that it is composed of ventilation tube, herringframe column, ring base, water spraying device and tower core material. Among them, the ventilation tube is mostly reinforced concrete hyperbolic rotating shell with good structural mechanics and fluid mechanics characteristics. The lower edge of the shell is supported on equidistant V-shaped or X-shaped inclined pillars to form the air inlet of the cooling tower. The load of the shell is transmitted to the foundation through inclined pillars, the foundation is mostly made of an inclined ring foundation to bear part of the ring tension from the inclined pillar, or a separate single foundation or pile foundation.
In addition to the above, the FRP cooling tower also has the following characteristics: the throat diameter of the ventilation tube used in the cooling tower is the smallest. When the shell is calculated to be stable under pressure, the shell wall is the thinnest, thus the upward diameter gradually increases to form the air flow outlet diffusion section. The tower top is provided with a rigid ring, the throat is gradually expanded below the hyperbolic shape, and the shell wall of the lower section is correspondingly thickened to form a lower ring beam with certain rigidity.
In order to complete the heat dissipation process of FRP cooling tower, there must be enough cold air to exchange heat through the heat dissipation device in the tower. Therefore, the cooling tower should have a structure through air flow (cooling tower ventilation tube) and a frame supporting heat dissipation device (wet cooling tower is water distribution device, water spraying device, dry cooling tower is radiator with fin tube) and a cooling water recovery device (wet tower is water collecting tank, dry tower is water return pipe).
The ventilation methods are as follows: 1. Natural ventilation cooling tower: the air flow is generated by taking the difference between the air density inside and outside the tower as the driving force, so a very high ventilation cylinder is required to generate sufficient pumping force. The cooling tower with a height of 170 meters, a diameter of 135 meters and a cooling water capacity of 136200 meters per hour has been built in the world.
2. Machine ventilation cooling tower: the air flow is generated by the fan. The air duct is short and small, and only plays the role of exhaust and diversion. Cooling towers with small fan diameter (4.7~8.0 meters) are mostly built into grid-shaped tower groups, cooling towers with large fan diameter (12.0~20.0 meters and above) are mostly built into circular or polygonal single towers, and the maximum fan diameter is 26 meters, there are also several or more than a dozen smaller diameter fans installed on a circular or polygonal tower to adjust the load, and the fans can be arranged as blast or exhaust.
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 waiting for complete procedures