Measures to reduce hydraulic oil contamination in hydraulic pump stations

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The hydraulic oil in hydraulic pump stations is prone to contamination; residues from the production process, foreign substances that enter during equipment operation, and chemical byproducts generated during work all can cause impurities to form in the hydraulic oil. Therefore, it is almost impossible to completely eliminate impurities and fully prevent hydraulic oil from being contaminated. Therefore, in a practical sense, the most feasible approach is to control the level of contamination in hydraulic oil, thereby minimizing the damage caused by contamination to hydraulic pump stations. So how can we reduce the level of contamination in hydraulic oil? The approach mainly involves the following aspects: First, thoroughly clean the new equipment, especially the key components, by cleaning them carefully and repeatedly to prevent residues from contaminating the hydraulic oil ； Second, various filtering devices are installed to prevent contamination by external contaminants. To prevent dust in the air from entering, an air filter can be installed at the point where hydraulic oil comes into contact with air (mainly in the fuel tank), and a filter can be placed at the oil inlet in the tank to remove impurities from the hydraulic oil ； Third, if the hydraulic system malfunctions and needs to be disassembled, or if regular maintenance involving the disassembly and assembly of hydraulic components is required, it is essential to clean the environment in which the hydraulic system is located before carrying out these operations. If there is a dust-free area, it is best to perform the work there, as this helps to prevent dust from getting inside ； Fourth, appropriate filters and seals must be installed in certain key components of the hydraulic system. Filters that are not tight enough will not be effective, while those that are too tight can easily get clogged, causing greater damage. The installation and design should take into account the specific pressure and requirements of the hydraulic pump station. The same applies to seals; if they are too tight, it will increase their wear rate, thereby failing to provide an adequate seal. The filter seals also need to be checked regularly, and the filter elements should be replaced periodically ； Five, hydraulic oil should be replaced regularly, with the frequency of replacement determined based on usage conditions; generally, it should not exceed three months. When replacing the hydraulic oil, it is also necessary to clean the fuel tank and hydraulic pipelines as well ； Sixth, the selection of hydraulic oil is also very important; hydraulic oils with different standards and prices vary in terms of their purity. Even if all the other measures are taken properly, if the hydraulic oil itself contains impurities, then no matter how well those other measures are implemented, it will be difficult to achieve a decisive effect. Some hydraulic oils need to be replaced after just two months, while others can last for over half a year. Of course, this doesn’t mean that the higher the purity of the hydraulic oil, the better it is for us – higher purity also means a higher price. When choosing a hydraulic oil, it’s necessary to take into account the requirements regarding pressure accuracy and the pressure level of the hydraulic pump, etc.; it’s sufficient to select an hydraulic oil that offers the best cost-performance ratio.