1. Overview
Closed circuit cooling tower for industrial refrigeration is one of the indispensable and important equipment in the industrial refrigeration system, and its operation status directly affects the stability and energy efficiency of the refrigeration system. However, due to long-term use and environmental factors, closed circuit cooling towers are prone to various failures and require repair and maintenance. This article will focus on the repair and maintenance methods of closed circuit cooling towers for industrial refrigeration to help users better manage and maintain their equipment and ensure its proper operation.
2. Analysis of common faults and causes
1.Poor cooling:This can be due to aging cooling tower packing, clogging, or poor heat dissipation in the condenser.
2.Excessive noise:It may be due to abnormal operation of the motor, fan, water flow, etc.
3.Excessive vibration:It may be caused by the loosening of the equipment foundation, abnormal motor operation, etc.
4.Water Leakage:It may be caused by loose or damaged connections, or aging or falling off of the filler.
3. Repair and maintenance methods
1.Regular inspection and cleaning
In order to ensure the performance of closed circuit cooling towers, the following inspections and cleanings need to be carried out on a regular basis:
1) Clean up the debris and stagnant water around the cooling tower, and keep the ventilation well;
2) Check whether the connection part of the cooling tower is loose or damaged, and deal with it in time if there is any abnormality;
3) Clean up the sediment and impurities inside the cooling tower to keep the water flowing smoothly;
4) Check whether the motor, fan, bearing and other parts of the cooling tower are operating normally, and repair or replace them in time if there is any abnormality.
2.Change the packing regularly
Packing is an important part of closed cooling tower, its main role is to increase the contact area between water and air and improve heat exchange efficiency. However, due to long-term use and the influence of environmental factors, the filler is easy to age and clog, which affects the cooling effect. Therefore, the packing needs to be changed regularly to guarantee the performance of the cooling tower. In general, the replacement cycle of filler is 2-3 years.
3.Preventative maintenance
In order to ensure the proper functioning of closed circuit cooling towers, preventive maintenance and servicing are required. Here are some ways to do preventative maintenance:
1) Regularly check whether the electrical circuits and control system of the cooling tower are normal, and deal with any abnormalities in time;
2) Regularly check whether the bearing lubrication system of the cooling tower is normal, and deal with it in time if there is any abnormality;
3) Regularly carry out comprehensive cleaning and maintenance of the cooling tower, including waterway cleaning, descaling, etc.;
4) According to the actual situation, regularly carry out load test on the cooling tower to check whether its performance is normal.
4. Precautions
1.When carrying out repair and maintenance, the power should be turned off and shut down first to ensure the safety of personnel;
2.For high-altitude work or maintenance of special parts, corresponding safety measures should be taken;
3.Maintenance is carried out in strict accordance with the maintenance cycle specified by the manufacturer to avoid unnecessary waste caused by excessive maintenance;
4.If any abnormal situation is found in the process of use, it should be stopped in time for inspection and treatment.