Zhaoqing STC square counterflow cooling tower monopoly should be kept away from the kitchen and boiler room to a hot place. Sincerely serve Zhaoqing before construction, protect other equipment on site and conduct necessary isolation and listing. Lay a construction material cloth on the floor waterproof layer. The installation conditions appropriately increase the water density. Properly increase the flow rate or shut down several units to increase the water density when using multiple cooling towers. This can ensure a constant heat load on the circulating water, increase the water flow rate, and effectively improve Freezing phenomenon. High-quality and low-price Qingyuan cooling tower layout The cooling tower should be arranged in a well-ventilated place, and try to avoid places with a lot of dust, acid gas, high temperature gas and water vapor. Generally arranged on the ground, machine room or podium roof. 1 Analysis of energy saving potential of cold water tower 1 Energy saving potential of circulating water 1oC temperature difference exists The working process of the cooling tower is that the circulating water absorbs exhaust heat from the condenser and is sent to the cold water tower at temperature t1 to be distributed to the water distribution tank through the pressure pipe and hot water The spraying device diffuses into small and uniform water drops and sprinkles on the water-filling filler, and completes heat exchange with the cold air by evaporation, conduction and convection along the height and depth of the filler layer. The air absorbs heat and moisture, its temperature and humidity gradually increase and approach a saturated state, and escape from the top of the tower. The cooled circulating water returns to the condenser at temperature t2. It can be seen that the temperature of the water exiting the cooling tower directly affects the exhaust pressure of the turbine and the thermal efficiency of the cycle. In operating power plants, the cold water tower often works in an environment that deviates from the design conditions. The temperature of the water exiting the tower is higher than the design value, which causes the vacuum to drop and the unit economy to decrease. Table 2 shows the effect of 1oC increase in the water temperature of the tower on the economic performance of the 6 types of units due to the decrease in the cooling capacity of the tower. The customer-oriented external machine is installed outside the cooling tower air duct. As long as the turbine inlet and valve are closed, the bypass valve is opened, and Zhaoqing glass fiber reinforced plastic cooling tower is maintained and cleaned, the normal distribution of the system (without affecting the good process) is maintained and repaired at any time. The crane does not need to enter the site to operate, saving time and money. Zhaoqing STC square counterflow cooling tower monopoly cooling tower is a comprehensive product integrating aerodynamics, thermodynamics, fluidics, chemistry, biochemistry, materials science, static and dynamic structural mechanics, processing technology and other disciplines. Water quality is a multi-variable function, and cooling is a multi-factor, multi-variable and multi-effect synthesis process. There must be a certain amount of surplus energy (20% -25%) in the circulating water system of the cooling tower. During operation, these energy are stored at a certain valve, and over time, these energy are lost in vain. External turbine is the conversion of these "surplus energy" into mechanical energy, thereby replacing the cooling tower fan motor to achieve power saving purposes. Quality inspection report wavelength: λ = c / f; 36m (250 Hz) to 0.02 m (1000 Hz), mainly 0.085m (4000 Hz). Two main noise sources are fan noise: sound wavelength, strong penetrating ability, insignificant sound attenuation, and difficult management. Customer first
Zhaoqing STC square counterflow cooling tower exclusively sells evacuation items from Party B to clean the site; Wavelength: λ = c / f; 36m (250 Hz) to 0.02 m (1000 Hz), mainly 0.085m (4000 Hz). Fan noise from two main noise sources: sound wavelength, strong penetrating ability, and insignificant sound attenuation. Zhaoqing chemical cooling tower is difficult to control. The design idea of the cooling tower layout The characteristics of the cooling tower system of this project are: a large number of equipment, but the layout space is limited; the evaporative cooling tower needs a large amount of air intake and exhaust, in order to meet the cooling effect, the impact of air return must be reduced; the unit operation High noise requires its impact on surrounding buildings; high heat dissipation needs to prevent the generation of a large amount of "white smoke" (flowing water vapor). The above points are interrelated and restrictive. The following is a discussion on how to reasonably solve the above points. Solve the problem of air return and interference. The influence of wet air on the cooling tower is divided into two parts: return flow and interference. Return flow refers to the mixing of hot and humid air from the cooling tower into the cooling tower's intake air. Interference means that the air entering the tower mixes into other towers. Hot and humid air. In both cases, the specific enthalpy of the air entering the tower is increased, and the cooling effect of the cooling tower itself is reduced. In order to reduce the backflow to the greatest extent, it is necessary to comprehensively consider the surrounding buildings, the unit's own performance, and the dominant wind direction. Record data and shapes to help analysis and facilitate query. The structure of Zhaoqing material is easy to obtain and easy to process. The market price of the unfilled cooling tower uses a unique spray nozzle installed at the upper air inlet of the cooling tower. There are two methods: spray spin without motor and air exhaust from the top of the tower. When the hot water passes through the inner rotating blade of the nozzle, an internal swirling flow is formed to form a fine atomization, so that the mist exists, and the upward spraying and the downstream flow also fall countercurrent to the two cooling aging. The atomization is uniform and there is no hollow phenomenon. Zhaoqing's new energy-saving and high-temperature-resistant cooling tower has stable cooling effect, low power consumption, 0.01% water drift rate, no filler, low cost and long life, and meets the GB7190.1-1997 standard. Application scope Metallurgy, food, chemical industry, high turbidity, high temperature, cooling tower. Sound source attributes: The noise source is a huge circular water surface under the falling water area. It is a steady-state water noise generated by the continuous impact of cooling water on the large area of the pool water in the tower. It is a special type of mechanical noise, aerodynamic noise and electromagnetic noise. noise. Direct materials It is relatively easy to treat high-frequency noise in the southeast of Guizhou, but pay attention to sound insulation and avoid affecting the performance of heat dissipation. Although the noise can be greatly reduced with the anechoic louver, it must be properly designed, and the heat dissipation performance and Power performance. If the structure is not reasonable, the purpose of noise reduction will not be achieved. The flow resistance will affect the cooling tower's operation too much, and the cooling capacity: if the dynamic performance is not well designed, it will increase the resistance and even generate reverberation noise. Zhaoqing STC square counterflow cooling tower monopoly external turbine cooling tower, as the name implies, its main equipment is a water turbine installed outside the cooling tower fan. The main components of the external turbine are 304 # stainless steel impeller, 316L stainless steel main shaft, and volute main body adopt carbon steel. The guide impeller is an important part of energy conversion. Before the circulating water enters the impeller, a swirling flow is generated when the guide impeller, which improves the energy conversion efficiency of the impeller. The foundation of the hydraulic turbine is 900 * 900. The upper and lower steel plates use studs to adjust the position (easy to maintain and repair). The weight design of the turbine is similar to that of the traditional motor, and it is matched with the soft connection of the reduction box transmission in the wind turbine. Inspection results: Steel mesh (or steel bar) cement slats: durable, but high requirements, the steel bar is straight and not exposed, and has a certain protective thickness. Existing steel wire mesh or reinforced cement single slat or combined monolithic reinforced cement slat is shown. This kind of lath is liable to accelerate the corrosion of steel bars after the infiltration of cracks and moisture. Installation requirements
Zhaoqing STC square countercurrent cooling tower is a monopoly noise acoustic energy cooling tower that transmits and listens (records) at a certain distance and direction. The sound is affected by the decline in air quality and consists of the movement of the fan, the movement structure of the fan blades, the motor, the gearbox and the transmission belt. The standard requires cooling tower shutters: average intake airflow; retaining water in the tower. Naturally ventilated cooling towers with less dense hot air come from the top of the cooling tower; denser cold air enters the cooling tower from the bottom of the tower to fill; no fan is required; concrete towers <200 m; used for large heat cooling. Heat exchange between high-power fan air and circulating water; the water film on the surface of the filler can exchange heat with air to a large extent; there are many determinants of cooling efficiency; multiple cooling capabilities are available; multiple cooling towers can work simultaneously, such as Tower joint control. The air is blown into the vent by a centrifugal fan; advantages: suitable for towers with large airflow resistance; the noise of centrifugal fans is relatively low. Planning the above analysis, we have a clear understanding of the icing phenomenon of cooling towers, so to find ways to avoid this phenomenon, we must start from the following aspects: Because most cooling water contains calcium, magnesium ions and acid carbonates. When cooling water flows over the metal surface, carbonates are formed. In addition, the oxygen dissolved in the cooling water can cause metal corrosion and rust formation. Due to rust, the heat exchange effect of the cooling tower is reduced. In severe cases, cooling water has to be sprayed on the outside of the casing. When the scale is severe, the pipes will be blocked, making the heat exchange effect ineffective. The research data show that scale deposits have a great impact on the loss of heat transfer, and energy costs increase as the deposits increase. Even a thin layer of scale will increase the running cost of the scaled part of the equipment by more than 40%. Keeping mineral deposits in the cooling channel can improve efficiency, save energy, and extend the service life of the equipment, while saving time and costs. 2 Setting of simulation conditions model and simulation parameters. 1, 2 are the physical models for CFD simulation calculation under the design conditions of 14 cooling towers built with reference to CAD. Installation conditions Periodic water loss (D) Cooling tower selection basis 01 Selection instructions Please indicate the specific model selected by the cooling tower, or the flow rate per hour.