Countercurrent closed

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  • Countercurrent closed cooling tower

    Countercurrent closed cooling tower

    DETAIL

  • Countercurrent closed cooling tower

    Countercurrent closed cooling tower

    DETAIL

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    Countercurrent closed cooling tower structure and cooling principle

    Countercurrent closed cooling tower
    The basic operating principle of a closed cooling tower is as follows:
    The circulation of the working medium required by the customer. The hot medium flows from the upper coil inlet through the inside of the heat exchange coil, dissipates the heat to the outside air and spray water through the wall of the heat exchange coil, and then flows from the lower part after being cooled. Out of the coil outlet;
    The cooled medium required by the customer flows inside the coil and has no contact with the outside, which can ensure the clean state of the medium to meet the good working condition of the strict system;
    The external circulating water is sprayed from the bottom of the equipment to the outer surface of the coil from the low-lift and large-flow water pump through the upper water distribution system to ensure full coverage, enhance heat exchange, and effectively control the possibility of scale formation;
    The lower part of the unit is equipped with an air inlet. The fresh cold air from the outside enters the equipment and passes through the surface of the coil to vaporize part of the spray water. The latent heat of vaporization of the water is large, which can effectively exchange the heat inside the coil and discharge it through the fan.
     
    Heat exchange coil
    For heat exchange, what is needed first is the heat exchange area. With sufficient heat exchange area, this will be a guarantee of the heat exchange effect; the heat exchange coil is made of copper tubes, and the pressure is 1.6 after three times in the production process. Strict testing of Mpa.
     
    Excellent ventilators and air ducts
    The cooling fan of the closed cooling tower adopts a special fan for the airfoil hollow axial flow cooling tower made of aluminum alloy. The angle of the fan can be adjusted according to the equipment. The fan as a whole will not be disassembled after high-strength dynamic balance and static balance tests. Before assembling to the cooling tower, check the static balance again to ensure reliable performance. The blades are made of hollow aluminum alloy, and the central hub is made of high-strength steel plates. The fan has sufficient strength when rotating at high speed. The streamlined blades of the wing reduce the noise of the fan while ensuring sufficient air volume and pressure. The air duct adopts a modeling design to effectively improve the efficiency of the fan. It is made of galvanized steel. The air duct makes full use of the theory of gas flow field homogenization, and is designed in combination with engineering practice experience and measured data. The inner wall curve adopts an elliptic curve and a straight line. Compared with the natural diffusion type air duct, the air duct eliminates the phenomenon of air flow separation, reduces the vortex area, and greatly reduces the area of ​​the negative pressure zone at the center of the air duct. The wind speed distribution at the air outlet section tends to be uniform. After actual application testing, The kinetic energy recovery value of the air cylinder is large.
    The axial fan is installed on the top of the cooling tower. The bracket of the fan is fixed on the frame of the cooling tower box to make it integrated, the structure is firm, and it is conducive to later disassembly, replacement, overhaul and maintenance.
     
    Electric motor
    It adopts outdoor fully enclosed motors (including fans and pump motors), with protection class IP55 and insulation class: F. Fuel-free maintenance, high reliability, and long trouble-free operation time.
     
    Water pump
    Due to the special requirements of the closed cooling tower itself, the use of low-lift, large-flow water pumps can still maintain a small power consumption while ensuring sufficient and large spray water volume, which improves the effect of the equipment. The pump motor is an outdoor design, and the protection level reaches IP55. The water pump adopts mechanical seal, which has strong wear resistance and long life. The low point of the water pump is provided with a plugged drain port, which is convenient for stopping and draining, and prevents the volute from freezing and cracking due to water storage in winter.
     
    Strong corrosion and rust resistance
    After fully considering the problem of rust prevention, galvanized steel materials are adopted for steel frames, panels, etc., and meet the low temperature requirements. Therefore, this machine has good corrosion resistance and rust resistance. In order to improve the anti-corrosion, low temperature resistance and adaptability of the galvanized steel under various environmental conditions, thick galvanized steel material is used for the tower body, and the surface of the steel plate is prevented from scratches and damage during the processing, and the bright original color of the galvanized steel material is maintained , Make the appearance of the tower beautiful and generous.
     
    Beautiful appearance, convenient maintenance, low operating cost
    The cooling tower adopts a steel frame structure and a galvanized steel plate structure on the tower body structure, as well as an external fan oil injection system (oil gun injection), which makes operation and maintenance simple and convenient. In addition, this product has the technical level of heat exchange. Reduce the operating cost of the cooling tower. And the beautiful shape of the cooling tower can be harmoniously combined with the building, saving additional costs.
     
    Easy installation and short construction period
    Due to the modular theory and special process design, the cooling tower can be directly delivered in all models (divided into upper and lower parts). The flange is used for splicing on site, which can be directly hoisted in place, thereby reducing the construction period. Saved expenses.

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