How to maintain and maintain the operation of the Cooling Tower
In the process of daily maintenance, how to maintain and maintain the operation of the Cooling Tower? After the installation and commissioning of equipment, the equipment must be fully tested and commissioned, so that the problem can be easily found in a timely manner, and timely processing. In the process of inspection, in addition to pay special attention to the size of the Cooling Tower and the height of each component is not accurate, but also need to adjust the equipment and antifreeze equipment.
Cooling Tower manufacturers to protect and Cooling Tower into and out of the water pipes, trenches, sinks and the pool level and the annex to the equipment, stack beam gate and other conditions have a certain contact. In the examination of mechanical ventilation Cooling Tower, it is necessary to pay special attention to the quality of the fan equipment, especially the center line and the balance is not accurate, the fan blade equipment point of view is not in line with the requirements of the gap between the blade and the fan shell is not to maintain the production The rules of the value of the Cooling Tower before the operation, it is necessary to identify the cooling system is not left over when the construction of debris, and overflow sewer is not already connected, there is a need to check, there are primary And the location of the pipe and the channel on the channel and the device is not accurate.
Cooling Tower collection pool in the initial water, the water level should reach the maximum elevation in the circulating pump into operation in the future, it is necessary to keep the water from the outside until the entire system filled with water to stop. Together in the circulation system during the water filling process, should pay attention to avoid the Cooling Tower collection pool water level decline in the operation of the circulating pump to stop the situation. If the Cooling Tower in the winter when the demand for water discharge, the demand in a timely manner to avoid ways to avoid the pipeline, ditch, wells and water in the pool showed frozen symptoms.
Usually choose the Cooling Tower is based on its cooling capacity, air conditioning and refrigeration system Cooling Tower of the circulating water, by the cooling capacity of the refrigerator, cooling water inlet and outlet water temperature difference is usually referred to the import and export water temperature difference is the standard operating conditions of. That is, the water temperature is 37 ℃, the water temperature is 32 ℃, the wet bulb temperature is 28 ℃. When the temperature of the Cooling Tower is not the standard condition, the inlet and outlet water temperature also changes, the approximation degree (the approximation degree is the difference between the effluent temperature and the wet bulb temperature) will also change. As in the Beijing area, the wet bulb temperature is 26.4 ℃, the influent temperature is 35 ℃, the water temperature is 29.5 ℃, the approximation degree is 3 ℃.
The proximity of the Cooling Tower directly affects the cooling capacity of the Cooling Tower, the smaller the degree of coherence, the smaller the cooling capacity; the greater the approximation, the greater the cooling capacity. Standard 100 water tons of Cooling Tower in the degree of approximation of 4 degrees; can cool water 100 tons, the degree of approximation of 3 degrees, can only cool water 85 tons, and to cool 100 tons of water, the Cooling Tower must choose the standard type 125 tons of Cooling Towers.
The working principle of the Cooling Tower is: the dry air through the fan after the tic, from the air into the Cooling Tower into the Cooling Tower; saturated steam partial pressure of high temperature water molecules to low pressure air flow, hot and humid (high enthalpy) The sowing system spilled into the tower. When the water droplets and air contact, on the one hand because of the air and not the direct heat transfer, on the other hand due to the water vapor surface and the air between the pressure difference, the role of pressure in the evaporation phenomenon, to take the current latent heat, The heat in the water to take away the heat transfer, so as to achieve the purpose of cooling the Cooling Tower.
By understanding the working principle of the Cooling Tower, the fouling of the following treatment: Cooling Tower hourly cooling water in the summer about 1000T / h, winter about 800t / h. As a result of the use of open-type cooling water tower, with the continuous evaporation of cooling water, need to continue to add raw water, so the concentration of water insoluble calcium salt will gradually increase, so that the Cooling Tower scaling is very serious, resulting in Cooling Tower Uneven water distribution, cooling effect worse, the temperature difference is only 1-2 °. If you take the replacement of sprinkler systems and packing methods, not only expensive, and maintenance cycle is long, affecting production. The use of pickling method to clean the Cooling Tower, the effect is very good.