Energy-saving water turbine cooling tower series
Key words:
Classify:
Cooling tower accessories series
Hotline:
Energy-saving water turbine cooling tower series
Preface
With the development of industrial production and the continuous improvement of people's living standards, controlling water pollution and rationally utilizing water resources has become imminent. To this end, many units have generally adopted fiberglass cooling towers, which are efficient and energy-saving ideal equipment, implementing internal water closed-loop circulation, improving the reuse rate, effectively reducing costs, and at the same time, turning people's desire to adjust the ambient temperature, humidity, cleanliness, and noise impact into reality. Fiberglass cooling towers are corrosion-resistant, high-strength, lightweight, small in size, space-saving, beautiful and durable, and are convenient for transportation, installation, and maintenance. Therefore, they are widely used in various sectors of the national economy, and are particularly suitable for air conditioning, refrigeration, air compressor stations, heating furnaces, and condensation process cooling water circulation systems.
The circular counter-flow fiberglass cooling tower adopts counter-flow gas-heat exchange technology. The filler uses high-quality modified polyvinyl chloride wave plates to expand the water distribution area; through the rotating water distribution method, uniform water distribution is achieved, enhancing the cooling effect. Our factory has made partial improvements to the exterior design of this series of products, making it more reliable, durable, and easy to assemble.
Main Uses
(1) DBNL3 series low-noise fiberglass cooling tower - Suitable for general cooling occasions such as air conditioning and refrigeration units with a water temperature drop of 3-8 degrees.
(2) CDBNL3 series ultra-low noise fiberglass cooling tower - Suitable for hotels, hospitals, public buildings, and occasions closer to residential areas with stricter noise requirements.
(3) GBNL3 series medium and high temperature industrial fiberglass cooling tower - Suitable for industrial water circulation cooling systems with a water temperature drop of 10-25 degrees.
Model Composition
There are three series of circular counter-flow fiberglass cooling towers: DBNL3, CDBNL3, GBNL3
D: Low noise CD: Ultra-low noise G: Industrial type B: Fiberglass N: Counter-flow L: Cooling tower
Performance and Selection
1. Design parameters:
1) Standard conditions: Inlet water temperature t1 = 37℃, outlet water temperature t2 = 32℃, design wet-bulb temperature τ = 28℃, i.e., water temperature Δt = 5℃, cooling range t2-τ = 5℃
2) Medium temperature conditions: Inlet water temperature t1 = 43℃, outlet water temperature t2 = 33℃, design wet-bulb temperature τ = 28℃, i.e., water temperature Δt = 10℃, cooling range t2-τ = 6℃
3) High temperature conditions: Inlet water temperature t1 = 60℃, outlet water temperature t2 = 35℃, design wet-bulb temperature τ = 28℃, i.e., water temperature Δt = 25℃, cooling range t2-τ = 8℃
2. When selecting, you need to know the water quantity Q, inlet water temperature t1, outlet water temperature t2, and design wet-bulb temperature τ, and then determine the model according to the thermodynamic performance curve. The thermodynamic performance curve is shown in Appendix 1 and Appendix 2. For conditions outside the curve table, thermodynamic calculations can be performed. The volumetric mass transfer coefficient β × ν of the filler is as follows: 1.2 times the nominal flow rate: β × ν = 18600; 1.0 times the nominal flow rate: β × ν = 17800; 0.8 times the nominal flow rate: β × ν = 17000.
3. The operating weight is calculated based on half the depth of the water in the tower body. If calculated based on full water, it should be multiplied by 1.5.
4. This series of cooling towers are used in areas where the average temperature of the coldest month is not lower than -10℃. Users in areas with lower temperatures should request freeze prevention measures to configure a water distribution diversion ring to prevent water from flowing onto the louvers. During intermittent operation in winter, electric heating tubes can be added to the water tank. This series of cooling towers are used in areas where the average temperature of the coldest month is not lower than -10℃. Users in areas with lower temperatures should request freeze prevention measures to configure a water distribution diversion ring to prevent water from flowing onto the louvers. During intermittent operation in winter, electric heating tubes can be added to the water tank.
5. The turbidity of the circulating water is not more than 50 mg/L, and not more than 100 mg/L in the short term. It should not contain oil stains and mechanical impurities. If necessary, algae control and water quality stabilization measures should be taken.
6. The applicable water temperature does not exceed 60℃. If it exceeds, it can be specified when ordering, and our factory will solve it in terms of material selection. If a flame-retardant cooling tower is required, please specify it when ordering, and our factory can meet the requirements.
7. The water distribution pipe is perforated according to the nominal flow rate. If the actual flow rate differs from the nominal flow rate by more than ±15%, the user should specify it when ordering.
8. The water pressure of the inlet pipe is approximately 2-5 meters of water column. Do not design the pressure too high during design, otherwise it will cause water spraying.
9. Motors and fans are supplied as standard. Our factory needs to send personnel for on-site installation or technical guidance.
10. When the user needs to directly draw water from the lower tower body of the cooling tower, "automatic water supply pipe", "rapid water supply pipe", "drain pipe", and "overflow pipe" need to be installed. Please specify when ordering.
Structural Features
(1) Tower body: Reasonable lines, stable airflow, excellent material, bright colors, the surface gel coat resin contains anti-ultraviolet agent, is resistant to aging, high strength, light weight, and corrosion-resistant. According to the order requirements, the lower tower body can be equipped with overflow, drainage, and automatic water supply pipes, and water can be directly drawn from here, saving the cooling pool. A noise-reducing pad is installed on the top, effectively reducing the dripping sound.
(2) Filler: Modified polyvinyl chloride wave plates are used, with transverse convex ribs added, strong water redistribution ability, low resistance, good thermodynamic performance, high temperature resistance of 70℃, low temperature resistance of -50℃, and good flame retardancy.
(3) Rotating water distributor and water distribution pipe: Equipped with stainless steel ball bearings, flexible and reliable operation, low head, uniform water distribution, using aluminum alloy or fiberglass water distribution pipes, water collecting plates are installed on the pipes to overcome the phenomenon of water spraying.
(4) Fan: Low-noise, high-efficiency fan designed by the Department of Engineering Mechanics, Tsinghua University, based on the parameters of the series cooling tower, aluminum alloy blade type or fiberglass blades, low noise, high efficiency.
(5) Motor: The YLF series motor is a new generation of three-phase asynchronous motors specially designed for cooling towers by our company. Its design concept and structural type fully consider the use environment of cooling tower motors. In terms of sealing, moisture-proof, water resistance, and reliability, it is reasonably matched with the cooling tower and fully meets the outdoor protection requirements for long-term operation in a humid and hot environment.
(6) Speed Reducer: The NGW type cooling tower dedicated low-noise planetary gear reducer. The gear material of this reducer is carefully selected, and the manufacturing process is strict. After mechanical processing, it undergoes tempering, carburizing, and quenching heat treatment. All gears are finally subjected to gear grinding (external teeth), ensuring the overall quality of the reducer. Due to the use of planetary gear transmission, it can withstand high-speed heavy loads and has the advantages of impact resistance, corrosion resistance, stable operation, and low noise. Its matching motor is the YLF series cooling tower dedicated three-phase asynchronous motor.
(7) Sound Absorption Facilities: The ultra-low noise cooling tower has added a shield with sound-absorbing material to the air inlet and installed sound-absorbing grilles at the upper and lower parts to achieve the maximum noise reduction effect. A horn-shaped shield and sound-absorbing grille with sound-absorbing material are installed at the outlet of the upper tower body to reduce the noise from the fan and motor.
(8) Air Inlet Window: Equipped with fiberglass louvers to reduce water drift, low air resistance, especially suitable for northern regions and units that need to use cooling towers throughout the year.
(9) Bracket: All steel brackets for fans, fillers, air inlet windows, and tower bodies are assembled, galvanized, or painted for corrosion protection. Fasteners use galvanized or stainless steel bolts.
Installation, debugging, and usage instructions
1. The foundation drawings and installation dimensions in this manual are for reference during installation. The direction of the inlet and outlet water pipes of the small counter-flow tower can be arbitrarily selected in the horizontal position, but it must not collide with the foundation. If there is a foundation in the middle, its load should be 25% of the operating weight, and the remaining 75% is equally borne by the surrounding rectangular foundation. If installed on the roof, the additional pressure caused by the load should be considered.
2. Brackets should be installed at the connection between the cooling tower and the inlet and outlet water pipes to prevent excessive weight from pressing on the tower walls.
3. The fan blades should be adjusted before installation and use to maintain a consistent angle. The method is to make a mark on the front and rear edges of each blade at a distance of 150 mm near the blade gap, and then measure the distance between the front and rear edges of each blade from the lower chord of the bracket to calculate the height difference between the front and rear edges of each blade at this point. Through several adjustments, the height difference is consistent, which is qualified.
4. After connecting the motor wires, seal the junction box and pay attention to the current test value not exceeding the rated current of the motor.
5. When starting the cooling tower, be sure to start the water pump first and then the fan. Do not allow the fan to run without water spraying. The fan can be reversed at a low speed for a short time to remove ice.
6. Before using the reducer, oil should be added. 50# anti-wear gear oil or machine oil can be used for lubrication. The new oil should be changed after the first 100-300 hours of operation, and then changed every 3000-5000 hours of operation. The oil level should be moderate, and the oil level gauge should be easy to observe.
7. When the cooling tower is running, there should be a dedicated person to manage it, and regularly pay attention to changes in current and water temperature. Regular inspections should be conducted on the motor, reducer, water distributor, and other parts.
Related Products
Product Message
Website
Address: 2km south of the toll station in Anqiu City, Shandong Province (FRP Industrial Park)
Tel：+86-13685366350
E-mail：13685366350@163.com
Powered by www.300.cn | Privacy Policy