Chengdu Hangxiang Trading Co. LTD
Cooling Tower Technical Specification
Descriptions: this series of cooling tower is a square FRP counter-flow cooling tower jointly designed by The fourth Design and Research Institute of ministry of Machinery Industry and Tsinghua University; it is widely used in the cooling water circulation cooling of chemical, metallurgical, pharmaceutical, brewing, power generation and other industries. It has the advantages of good thermal performance, less power consumption, good stability of the whole tower, beautiful appearance, low noise, short construction and installation period and low cost.

 

product superiority

Product
 Various types of cooling towers have complete specifications, which can be developed and designed according to the needs of users; various types of FRP storage tanks, pipelines, desulfurization towers, absorption towers, water tanks, aquaculture tanks, etc.; supporting products are: chillers, filters, dosing devices, soft water equipment, etc;
Technology
Standardized production process, highly mechanized, automated operations, sophisticated production and manufacturing of high-quality products.
Material
Raw materials and products are selected from domestic high-quality products to ensure that the supporting equipment after-sales worry free.
Management
Implement ISO9001 quality management system, standardize production management and promote enterprise development.
Technique
Strict four pass quality inspection and production standard of cooling tower industry are carried out.
 
 
一、Design and operating conditions
Wet bulb temp：29℃       dry bulb temp：31.5℃     floating water loss：0.001%      
Water inlet temp：42℃     water outlet temp：32℃    Temperature difference of cooling：10℃     
 Max wind load ：≤7.0 × 10²pa  
 Evaporation loss：≤0.015%/℃
Bearing earthquake intensity：≤9°
Water inlet pressure (at spray pipe)：1.5 ×10⁴pa(0.15Bar)
 
二、Technical parameters of cooling tower
GFNL-1000T（4 conjoined）square FRP counter-flow   open cooling tower with steel structure frame Technical parameters

项 目 Items	内   容 Descriptions	参   数 Data	备注 Remarks
基本参数 Basic data       基本参数 Basic data	冷却塔类型 cooling Tower type	方形逆流开式玻璃钢冷却塔 Square FRP counterflow open cooling Tower	钢结构框架 Steel frame
	冷却塔型号 cooling Tower mode	GFNL-1000T（4台连体） 4 conjoined
	冷却循环水量 Cooling circulating water	4000m3/h
	进水方式 input water type	上进水 Water from above
	长×宽×高（Ｌ×Ｗ×H）	37600mm×9400mm×10250mm	标准  norm
	进水管尺寸（DN） Water inlet tube size	350mm
	降温温差 Temperature difference of cooling	10℃
	湿球温度 wet-bulb temperature	29℃
	大气压力atmospheric pressure	100400Pa
电机风机参数 Motor Fan Data	数量quantity	4台套 4 sets
	风扇形式 the fan form	轴流式 axial flow
	风量 blast capacity	78×104m3/h×4台sets
	总静压total static pressure	95Pa
	叶轮直径 impeller diameter	φ4700mm
	叶轮转速 impeller speed	240r/min
	叶片数量 impeller quantity	4片/台 4 pieces per set
	空气密度 air density	1.2kg/m3
	风叶型号 fan blade type	LF47
	电机形式 motor form	冷却塔专用 cooling Tower dedicated
	电机转速 motor speed	1460r/min
	传动方式 kind of drive	外传动 outer
	电源 power supply	380V／3P／50Hz
	电机功率 motor capacity	45kw×4台sets
	电机启动方式 motor start	直接启动 direct starting

GFNL-1000T（4 conjoined）square FRP counter-flow open cooling tower configuration table

项 目 Items	内   容 Descriptions	数    据 Data	生产厂家 manufacture factory
玻璃 钢件  FRP	风筒 air duct	玻璃钢材质， 玻璃钢氧指数可达到≥35 FRP material , The oxygen index of FRP can be reached≥35	山东 Shan Dong Province
	面板 panel
	百叶窗 louvers
内部 构件 internal	减速机speed reducer	外传动 outer drive	河北 He Bei Province
	风机 Fan	轴流式 axial flow type	河北 He Bei Province
	电机 motor	全封闭防水防潮型 Fully enclosed waterproof and moisture-proof type	河北 He Bei Province
	风叶 fan blade	环氧玻璃钢fiber glass epoxy plastic	河北 He Bei Province
	内部框架  internal frame	材质：Q235-A （热镀锌） material：Q235-A （hot galvanizing）	山东 Shan Dong Province
	支柱件 pillars
	电机架motor frame
	填料托盘 filler tray
	进水管、喷淋管inlet/spray tube
填料 filler	聚氯乙烯 PVC（改性modified PVC）		海天基业 Haitian CO.LTD
	耐高温65℃，耐低温-35℃ High temperature resistance 65℃, low temperature resistance -35℃
喷淋spray	喷淋头 spray header （ABSⅢ）		山东 Shan Dong Province
护栏guardrail	Material Q235材质（热镀锌）（hot galvanizing）		山东 Shan Dong Province
爬梯	Material Q235材质（热镀锌）（hot galvanizing）		山东 Shan Dong Province

 



二、Cooling tower system component descriptions
 
Stress structure of tower body: steel frame structure, steel processing, pickling and rust removal, hot galvanizing anti-corrosion treatment. The whole tower has reasonable square shape and profile, stable air flow, high tensile strength and high hardness. The enclosure structure of the tower body is made of polyester glass fiber reinforced plastic, with curing degree of more than 80%, bending strength of 147Mpa, Babbitt hardness of more than 35, and resin content of structural layer of 45-55%. The outer surface of the tower is smooth without air bubbles. The resin is 306# resin produced by Tianjin synthetic material factory, and glass fiber is made by Changzhou 253 factory. The outer surface adopts 31# and 33# color gel coat resin produced by Ashland, USA, which has excellent anti-aging and anti ultraviolet performance. Contains anti ultraviolet agent, anti-aging, never change color. The products have high strength, light weight and corrosion resistance. The physical and chemical indexes of the glass fiber reinforced plastic (FRP) parts have exceeded the national standard GB7190.1-1997, and the quality of FRP parts can be guaranteed for 30 years.
 
Enclosure: made of FRP. FRP products are light, high strength, corrosion resistant, beautiful and anti-aging. The outer enclosure board of cooling tower is made of anti ultraviolet radiation gel coating resin with standard and delicate process. The glass fiber reinforced plastic is solidified in the warm room with constant temperature and humidity. The surface of the glass fiber reinforced plastic enclosure board made by our factory is smooth and UV resistant, and the overall appearance is beautiful. It can prevent the joint from water seepage, scaling and coating, and improve the overall strength. The resin used for FRP production is 306# resin produced by Tianjin synthetic material factory, and glass fiber cloth produced by Taishan glass fiber reinforced plastic Co., Ltd. is used for glass filler. The outer surface adopts 31# and 33# color gel coat resin produced by Ashland, USA, which has excellent anti-aging and anti ultraviolet performance.
 


 3、 Air duct
 
The air duct is a kinetic energy recovery type air duct, with reasonable air distribution, high efficiency, FRP material, light weight, high strength and corrosion resistance. The air flow in the inner wall tends to be smoother by using the curve of the inner wall of the air duct, and the air outlet area tends to be smoother by using the curve of the inner wall of the air duct and reducing the area of the air outlet by using the practical data The kinetic energy recovery value of the air duct is more than 30%.
 
Production process material: air duct resin adopts 306# resin produced by Tianjin synthetic material factory, glass fiber adopts alkali free and twistless coarse gauze produced by Changzhou 253 factory. The outer surface adopts 31# and 33# color gel coat resin produced by Ashland, USA, which has excellent anti-aging and anti ultraviolet performance.
 
 
The surface of FRP products is uniform, the color is uniform, and it will not fade and crack after long-term use. According to the test of national authority, the physical and chemical performance indexes of the FRP components meet or exceed the national standard GB7190-1997, and the service life of FRP members is guaranteed to be 30 years. The curing degree of FRP products is 81.64% (International Value: 80%), bending strength is 273Mpa (International Value: 147Mpa), Barker hardness is 60 (international value is 35), resin content of structural layer is 45.78% (International Value: 45%), air duct adopts T-shaped large section open web reinforcement, which can resist high temperature 85 ℃ and low temperature - 35 ℃. Therefore, it is often exposed outdoors without cracking.
 
Fan: the fan is made of high strength epoxy glass fiber reinforced plastic. The fan has reasonable structure, low noise, high efficiency, corrosion resistance, smooth air flow, light weight, energy saving, good dynamic balance, small vibration and no fracture. Long service life, not easy to damage. The aerodynamic force of the fan is reasonable and the angle is adjustable. The fan is an important part of the cooling tower equipment, and its performance will directly affect the thermal performance of the cooling tower. Our company carries out local treatment in some key parts of the system, which lays a foundation for the safe and long-term stable operation of the cooling tower equipment.
Model:LF-47 impeller diameter：Φ4700mm
Fan blades:4
blade install angle：α=12.0°
fan total pressure：H=127Pa
fan static pressure ：H_j=84.1Pa
fan wind capacity ：780000m3/h


 
Motor and reducer: the fan is equipped with Y Series outdoor motor produced by well-known domestic manufacturers, horizontal type, in accordance with the standard "rotating motor rating and performance" GB755-2000. The protection grade of the motor is IP55, the insulation grade is F, and the power supply is 380V / 50Hz / three-phase. The motor has stable performance, good waterproof performance and high efficiency. The reducer equipped with the motor has low noise, high efficiency, reliable oil lubrication and convenient inspection.
model ：YE2  225M-4 
voltage classes：380V/3P/50Hz
rpm ：1460rpm
power ：45kw
Efficiency ：92%
insulation class ：F insulation
Filler: modified pvc-s wave type film filler is used, which can adapt to the temperature of 65 ℃ to - 35 ℃. This type of filler has large surface area, strong water redistribution ability and small resistance. The original sheet is plasticized evenly, without cracks, bubbles, obvious impurities and poor dispersion of auxiliary materials. The number of impurities with particle size of 0.6 ~ 1.0 mm is less than 30 pieces / m², and the dispersion is not more than 5 pieces / 10m². The edge of the sheet is smooth and straight, and the color is consistent. The filler has the advantages of light weight, convenient installation, good chemical resistance, high cooling efficiency and wide application range. According to the test of Beijing Academy of water sciences:
N=Ω＝１.725λ0.578
Ka=1103(g/1000)0.588(q/1000)0.432
above：N=Ω—— cooling number
         λ—— gas water ratio
          Ka——Bulk mass coefficient[kg/(m³.h)]
          g——Weight wind speed[kg/(m².s)]
          q——water drench density [kg/(m².h)]
 
The filler flat sheet shall meet the following requirements:
1. Tensile strength ≥ 42.3Mpa
2. Sheet density ≤ 1.55g/cm³
3. The longitudinal deformation rate of flat sheet in (90 ± 1)℃ water for 15 min is ≤ 5%
4. There was no obvious deformation in 65 ℃ water for 1 hour of the filler blocks .
5. Under the condition of simply supported 2.9KN/m² evently  load for 1 hour at room temperature, the bearing surface and compression section have no obvious deformation, no obvious residual deformation after unloading, and the loosening rate of bonding point is ≤ 10%
6. The fracture strength of the sheet is ≥ 1500N /cm² in longitudinal direction and 1500N / cm² in transverse direction
7. Water absorption ≤ 0.15%
8. Elongation at room temperature: longitudinal ≥ 60%, transverse ≥ 35%
9. Cold resistant temperature ≤ - 35 ℃ in low temperature folding experiment


 
Quality standard for finished product of water spray filler
The allowable error of the length and width of the filler molding sheet is ±10mm, and the sheet shape is rectangular. The broken holes of the shower plate shall not exceed 20/㎡, the dispersion degree shall not exceed 5/10cm², and the broken hole diameter shall not exceed 2mm. Straight, no cracks and obvious gaps.
   The allowable error of the water-spray filler assembly block spacing is not more than ±1.0mm, the allowable error of the sheet geometry is not more than ±5%, and the maximum error is not more than 1.0mm.
The water-spray filler is assembled into blocks by bonding, each assembly block is firmly connected and the overall rigidity.
The adhesive used has water resistance, heat resistance (75°C), cold resistance (-35°C), and aging resistance. The shear strength after bonding for 24h is not less than 1.37MPa. The bonding strength test method is carried out in accordance with "HG2-151-65", and the bonding integrity rate should be above 90%.
The water-spray filler assembly block has sufficient rigidity and strength. The standard test piece under the condition of simple support has no obvious deformation under the uniform load of 2942N/㎡, and there is no residual deformation after unloading. There is no loosening of the points, and the test method should be carried out in accordance with "DL/T742-2001".
The water-sprayed filler assembly block is kept at 65°C without geometric deformation and no degumming. The test method is carried out in accordance with "DL/T742-2001".
The technical requirements for packaging, transportation, storage, installation, acceptance and other aspects of the spray filler shall be implemented in accordance with the relevant regulations in "DL/T742-2001".
The comprehensive quality complies with the Ministry of Electric Power DL/T742-2001 "Cooling Tower Plastic Components Technology"
Water distribution system: Q235-A pipe is used for the water distribution pipeline. After the pipe is processed, the pipe is pickled and rust removed, and then hot-dip galvanized anti-corrosion treatment. Low pressure pipe type water distribution. The water distribution pipe has the characteristics of corrosion resistance, low water flow resistance, simple and reliable structure. In winter, the ambient temperature is at -31.4ºC without freezing, cracking and falling off; working in a humid and hot environment without direct sunlight for many years, the aging period can reach more than 20 years.
The nozzle is equipped with an ABS three-disc nozzle, and the nozzle spacing and diameter are reasonably arranged after calculation of the water volume, the water distribution is uniform, and the unevenness of the whole tower is <5%. The nozzle sprays even and small water droplets, no umbrella film phenomenon, small combined uniform distribution coefficient, no hollow phenomenon, strong working head adaptability, and basic performance such as not easy to block. The geometry of the spray device does not soften and deform at 80°C.
Technical features:
1. Uniform water distribution: the water distribution pipeline adopts a loop network arrangement and is equipped with a balance pipe to ensure uniform water pressure in all parts of the pipeline;
2. Low resistance design: The inner wall of the pipeline is smooth, and the water flow resistance is small, which can reduce the precipitation of sewage in the pipeline. The water distribution pipe adopts a large diameter and low flow rate design, and the system water distribution resistance is only 0.2mmH2O;
3. Large operating flexibility: The actual tower test shows that the water flow deviation of the nozzles at different positions in the tower is less than 5%, and the system has high adaptability to hydraulic loads. The system can still work normally when the operating load reaches 130%. When the operating load is as low as 40%, the water distribution uniformity of the entire tower is not affected, which greatly improves the safety and reliability of equipment operation;
thickness ：0.8±0.1mm
Water collector: adopts reinforced arc-shaped water remover, the main components (arc sheet, tie rod) are made of modified polyvinyl chloride (PVC) material, flame retardant, not softened and deformed at +60℃, and the lowest temperature in winter －32℃, no embrittlement when shutting down. Long-term work in hot and humid environment, with good resistance to damp heat and aging, and the service life is more than 20 years.
Assembly method: using multiple rows of double tie rods in series assembly.
Thickness: 0.8±0.1mm
Technical features:
1. Water saving and environmental protection: The water collection efficiency is high. The on-site test by the national authoritative inspection department shows that the water collection efficiency of the water collector can reach 0.001% or less according to the circulating water volume, which is only one-tenth of the allowed value of the national standard , Reaching the advanced level of similar foreign products, greatly improving the impact of the equipment on the surrounding environment, avoiding cutting high-humidity air when the fan blades are rotating at high speed, and the service life of the blades can be extended by 2 to 3 years;
2. Low resistance and energy saving: small airflow resistance, under the condition of 2.8m/s wind speed, the ventilation resistance loss is about 0.8mmH2O, which is lower than similar foreign products;
3. Long-life design: the water collector is pultruded with modified PVC material, and imported carbon black and other modifiers are added to the sheet of the water collector, which greatly improves the sheet's anti-ultraviolet, anti-aging and mechanical properties .
4. Climbing ladder outside the tower: A ladder guardrail is installed outside the cooling tower to facilitate the maintenance of various parts of the cooling tower.
 
三．Summarize:
In summary, the cooling tower system has the following characteristics:
1. The application of high-quality ventilation equipment (fans, reducers, motors) ensures the efficient, safe and reliable operation of the overall equipment;
2. The application of the new product water collector with ultra-low floating water loss can make the floating water rate negligible, with new concepts of energy saving and environmental protection;
3. The system has a low water resistance design (water distribution system and sprinklers), with large operating flexibility, and can operate safely and reliably under 70% to 130% of the rated water volume.
4. The optimization of the overall design idea reduces the lift of the water pump and saves electric energy.
5. Through the calculation of thermal performance, there is a certain margin on the air volume of the fan and the power of the equipped motor in this scheme, which fully guarantees the normal use of the tower under adverse weather conditions and impact loads.
6. By adjusting the spray direction of the nozzle, the flow pattern of the water flow is changed to prevent the water from flowing to the wall plate and reduce the wall flow phenomenon.