How does water get into the hydraulic system? What are the harms? What are the solutions?

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(1) Ways water enters the hydraulic system There are roughly 3 ways water enters the hydraulic system. ① Mechanical failures such as poor sealing or leaks in the cooling coils allow water to enter the oil ； ② In humid and hot climates, it is brought in through the tank ventilation ； ③ The working environment is humid; there is pollution from water generated by underground conditions, water surfaces, rain, snow, and melting ice. (2) Hazards of water to hydraulic systems: ① It can react with hydraulic oil to form acids, gums, and sludge; it can also precipitate the additives present in the oil ； ② The main effect of water is to reduce lubricity; trace amounts of water dissolved in hydraulic oil can accelerate the wear of components under high stress. Studies on the fatigue life of mineral oil rolling bearings containing 100–400×10-6 levels of water show that the bearing life is reduced by 30%-70%. ③ Water can cause sticking of control valves, and cavitation damage can occur at the pump inlet or other low-pressure areas ； ④ Corrodes, rusts metals. (3) Solution ① Strengthen the monitoring of water content in oil ； ② For hydraulic equipment used outdoors, it is best to use anti- ； Drier installed on fuel tank breather hole ； ③ Conditional systems can be equipped with “super adsorption” dry filters.