countercurrent cooling tower
(1) tower body: reasonable line, smooth air, good quality, colorful, surface gel coat resin contains anti-UV agent, anti-aging, high strength, light weight, corrosion resistance. Under the tower by the order requirements, can be equipped with overflow, sewage, automatic water supply pipe, which can be directly from the water, eliminating the cooling pool, equipped with anti-noise muffler pad, effectively reducing the sound of dripping.
(2) filler: the use of modified polyvinyl chloride wave plate, horizontal increase the ribs, water redistribution ability, resistance, heat performance, high temperature 70 degrees, low temperature -50 degrees, good flame retardant, change PVC oblique wave film, water redistribution ability, resistance, thermal performance, high temperature 70 ℃ low temperature negative 50 ℃, good flame retardant.
(3) rotating water distributor and water pipe: equipped with stainless steel ball bearings, flexible and reliable operation, low head, cloth water evenly, the use of aluminum or glass steel pipe made of water pipes, pipe installed on the water board, to overcome the water phenomenon.
(4) Fan: Tsinghua University Department of Engineering Mechanics According to the series of cooling tower parameters designed low noise, high efficiency fan, aluminum alloy wing or FRP blade, the noise is small, high efficiency.
(5) Motor: Tsinghua University Department of Electrical Engineering in the Y-series installation on the basis of size, designed for the cooling tower low-noise energy-saving motor, sealed waterproof performance, high temperature, high efficiency, low noise.
(6) deceleration device: the use of polyester fiber reinforced chloroprene rubber power belt drive, high temperature, high efficiency, water does not stretch, to overcome the slippery phenomenon, the noise is very small.
(7) sound absorption facilities: ultra-low noise cooling tower in the air inlet with a sound-absorbing material to increase the shield, and in the upper and lower two with a suction barrier to achieve the maximum noise reduction effect. In the upper tower outlet installed with a sound-absorbing material of the trumpet shield and suction barrier, reducing the fan and the motor came out of the noise.
(8) into the window: with glass fiber reinforced plastic louvers, to reduce the floating water, air resistance is small, especially for the northern region and the need to use the cooling tower units throughout the year.
(9) bracket: all fans, fillers, into the wind, towers and other steel stent for the assembly, galvanized or painted anti-corrosion. Fasteners are made of galvanized or stainless steel bolts.
(10) on the tower body: a reasonable line, smooth air, good quality, bright color, the surface of the gel coat resin anti-UV agent, anti-aging, high strength, light weight, corrosion resistance.
(11) into the wind window: fitted with glass fiber reinforced plastic shutters, reducing splashing, air flow resistance.
Composition and Characteristics of FRP Round Counterflow Cooling Tower1, the tower of the force structure: for the steel structure, the addition of the crystal format multi-diagonal brackets tower rigidity, the maximum vibration amplitude of 0.15mm. The steel structure has been adopted to strengthen the anti-corrosion measures, galvanized after coating epoxy asphalt paint or chlorosulfonated polyethylene two.
2, envelope structure: polyester glass steel, light high-strength corrosion resistance, anti-aging.
3, hairdryer: for the kinetic energy recovery type, the air organization is reasonable, high efficiency, FRP material, light high strength corrosion resistance.
4, the fan: the blade material for the epoxy glass fiber reinforced plastic, the blade for the wing, filled with foam plastic, fan pneumatic and reasonable, large air volume, high efficiency, low noise, corrosion resistance.
5, reducer: horizontal horizontal, low noise, high efficiency, oil and bone reliable, easy maintenance.
6, the motor: Tsinghua University designed for the cooling tower dedicated variable torque variable speed motor. There are two kinds of explosion-proof and non-explosion. The variable speed motor, HBLG3-800,1000 type for the two-speed, HBLG3-1200 type for the three-speed, energy-saving significantly, called "energy-saving cooling tower." The motor can control the motor speed through the control cabinet. Variable speed motor than the single-speed motor to save 40% to 50% or more, it is flexible operation and management. When the high temperature, humidity or water equipment, water temperature drop, open high speed, and vice versa can be opened in the speed or low speed, evening gas low temperature can also be opened, low speed. At this point the noise can be reduced 3 ~ 6dB (A) above. Winter when the fan can be opened low-speed reversal. The temperature inside the tower can quickly ice, and do not damage the fan. Open low speed can also reduce the water, the surrounding environment will not cause pollution due to icing. When the speed is high, the control cabinet can automatically start from the low speed - medium speed - high speed, reducing the starting current.
Performance and choice1, the design parameters:
1) standard conditions: water temperature t1 = 37 ℃, the water temperature t2 = 32 ℃, the design wet bulb temperature τ = 27 ℃, the water temperature Δt = 5 ℃, cold high t2-τ = 5 ℃
2) the temperature conditions: water temperature t1 = 43 ℃, the water temperature t2 = 33 ℃, the design wet bulb temperature τ = 27 ℃, the water temperature Δt = 10 ℃ cold high t2-τ = 6 ℃
3) high temperature conditions: water temperature t1 = 60 ℃, the water temperature t2 = 35 ℃, the design wet bulb temperature τ = 27 ℃, the water temperature Δt = 25 ℃ cold high t2-τ = 8 ℃
2, the choice of water when the water Q, water temperature t1, water temperature t2 and design wet bulb temperature τ, and then according to the thermal performance curve to determine the model. On the curve table other than the working conditions, can be calculated thermally, the packing volume of the bulk coefficient β × ν as follows:1.2 times the nominal flow: β × ν = 18600
1.0 times the nominal flow: β × ν = 17800
0.8 times the nominal flow: β × ν = 17000
3, the operation of the weight of the tower by holding the water half of the calculation, if by filling the water should be multiplied by 1.5.
4, the series cooling tower for the coldest month average temperature of not less than -10 ℃ in the region, the temperature should be low to prevent the user should be prepared to prevent the freezing of the requirements, in order to configure the drainage guide ring, do not make water flow to the louver. During the intermittent operation of the winter, you can add electric heat pipe in the tank. This series of cooling towers for the coldest monthly average temperature of not less than -10 ℃ in the region, the temperature should be low to prevent the user should be prepared to prevent the freezing of the requirements, in order to configure the drainage guide ring, not to flow to the louvers. During the intermittent operation of the winter, you can add electric heat pipe in the tank.
5, the circulating water turbidity is not greater than 50 mg / l, short-term not more than 100 mg / l, should not contain oil and mechanical impurities, if necessary, to take algae and water quality and stability measures.
6, the water temperature does not exceed 60 ℃, such as more than can be specified in the order, the factory from the selection to be resolved. For flame retardant cooling tower, please specify when ordering, the factory can meet the requirements.
7, the distribution of water pipes in nominal flow openings, such as the actual flow and nominal flow difference of ± 15% or more, the user should be stated when ordering.
8, the water pressure is about 2-5 m mercury, the design should not be too high pressure, otherwise it will produce floating water phenomenon.
9, motor, fans are supporting the supply, the factory staff to be on-site installation or technical guidance, plus fees.
10, when the user needs in the cooling tower under the tower directly absorb water, the need to install the "automatic water supply pipe", "rapid water pipe" "sewage pipe" "overflow pipe", when ordering special mention.
The scope of application
Widely used in various sectors of the national economy, air conditioning, refrigeration, air compressor, heating furnace and condensing process cooling water circulation system is particularly appropriate.
Rotating water dispenser: flexible and reliable operation, low water head, uniform distribution of water, the use of aluminum alloy or glass steel pipe water pipe, pipe installation to overcome the water