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1. Appearance inspection method
Regularly observe the outer surface of the storage tank carefully to check whether there is coolant residue, water stains, rust or discoloration on the tank body, welds, valves, pipe connections and other parts. In particular, the bottom and sides of the storage tank should be checked carefully because these parts are more likely to leak. If traces of liquid are found, it is necessary to further determine whether it is coolant and find the source of the leak.
2. Pressure test method
This is a relatively common and effective detection method. First, seal the storage tank, and then use special equipment to fill the tank with a certain pressure of gas (such as air or nitrogen) to make the pressure in the tank reach the specified value. Usually, the test pressure will be slightly higher than the normal working pressure of the storage tank. Then, observe the changes in the pressure gauge reading. If the pressure drops beyond the allowable range within the specified time, it means that there is a leak in the tank. At this time, soapy water or a special leak detection agent can be applied to the possible leaking parts. If bubbles are generated, the leak point can be determined.
3. Liquid level observation method
During the normal use of the storage tank, pay close attention to the changes in the coolant level. If the liquid level is found to gradually decrease without normal consumption, there may be a leakage problem. In order to make a more accurate judgment, the liquid level can be measured and recorded multiple times over a period of time to analyze the trend of the liquid level decrease. At the same time, check whether there is coolant accumulation on the ground around the storage tank to assist in judging the leakage.
4. Dye penetration method
A special dye is added to the coolant, and then the outside of the storage tank and the surrounding environment are observed. If there is a leak, the dye will seep out with the coolant and dye the leaking part, making it easier to find the leak point. This method can also effectively detect tiny leaks, but it is necessary to pay attention to selecting dyes that are compatible with the coolant and do not damage the storage tank and the system.
5. Ultrasonic detection method
Use an ultrasonic detector to detect the storage tank. When there is a leak in the tank, an ultrasonic signal will be generated at the leak. The detector can capture these signals and analyze them to determine the location and extent of the leak. This method is suitable for detecting leakage in some parts that are difficult to observe directly. It has the advantages of non-contact, fast and accurate, but it requires professional equipment and technicians to operate.
