How to determine the content of water in hydraulic oil
2018/5/17 Viewers:
The content of water in oil is closely related to the chemical composition, temperature, time of exposure to air and aging of oil.
It is related to the chemical composition of oil. The amount of hydrocarbons contained in oil varies from time to time, and the amount of water that can dissolve is different. Generally, alkanes and naphthenic hydrocarbons are weak in dissolved water, and the ability of aromatic hydrocarbon to dissolve water is strong. That is, the higher the aromatic hydrocarbon content in the oil is, the stronger the moisture absorption ability of the oil is.
(1) it is related to temperature. The relationship between the water content and the temperature is very obvious, that is, the water content in the oil is the most increasing. When the temperature is reduced, the water dissolved in the oil will be separated and sink to the bottom of the container. The dissolution of water in oil at different temperatures.
(2) is related to the exposure time in the air. The longer the oil is exposed to the air and the greater the relative humidity in the atmosphere, the more water the oil absorbs. Therefore, when measuring the water content in the insulating oil, the sample must be sealed and sealed. The purpose of the test is to avoid contact with the air to determine the true water content in the sample. Oil absorbs water from air and is related to exposure time.
(3) it is related to the degree of oil refining. The dissolving ability of oil to water is related to its refining degree, such as the refining is rough and incomplete, or the oil purification is not thorough. The oil contains unexhausted phenols, acids, resins and saponified substances, which will increase the hygroscopicity of the oil and increase the water content in the oil. On the other hand, the water content is low.
(4) it is related to the depth of oil aging. The oil in operation will produce part of the moisture while it oxidize itself. For example, as an example of the oxidation of CnH2n+2 type pure alkanes, the results of the reaction get fatty acids and water, that is, with the depth oxidation of the oil and the increase of acid value, the water produced will also increase. On the other hand, after the deep oxidation of oil, not only the formation of acid and water, but also ketones, aldehydes, drunken and so on, and under certain conditions, polymerization, condensation reaction, and formation of tree lipid, asphaltene and so on. These substances can increase the hygroscopicity of oil. Therefore, in general, the capacity of old oil to water is greater than that of new oil.
It is related to the chemical composition of oil. The amount of hydrocarbons contained in oil varies from time to time, and the amount of water that can dissolve is different. Generally, alkanes and naphthenic hydrocarbons are weak in dissolved water, and the ability of aromatic hydrocarbon to dissolve water is strong. That is, the higher the aromatic hydrocarbon content in the oil is, the stronger the moisture absorption ability of the oil is.
(1) it is related to temperature. The relationship between the water content and the temperature is very obvious, that is, the water content in the oil is the most increasing. When the temperature is reduced, the water dissolved in the oil will be separated and sink to the bottom of the container. The dissolution of water in oil at different temperatures.
(2) is related to the exposure time in the air. The longer the oil is exposed to the air and the greater the relative humidity in the atmosphere, the more water the oil absorbs. Therefore, when measuring the water content in the insulating oil, the sample must be sealed and sealed. The purpose of the test is to avoid contact with the air to determine the true water content in the sample. Oil absorbs water from air and is related to exposure time.
(3) it is related to the degree of oil refining. The dissolving ability of oil to water is related to its refining degree, such as the refining is rough and incomplete, or the oil purification is not thorough. The oil contains unexhausted phenols, acids, resins and saponified substances, which will increase the hygroscopicity of the oil and increase the water content in the oil. On the other hand, the water content is low.
(4) it is related to the depth of oil aging. The oil in operation will produce part of the moisture while it oxidize itself. For example, as an example of the oxidation of CnH2n+2 type pure alkanes, the results of the reaction get fatty acids and water, that is, with the depth oxidation of the oil and the increase of acid value, the water produced will also increase. On the other hand, after the deep oxidation of oil, not only the formation of acid and water, but also ketones, aldehydes, drunken and so on, and under certain conditions, polymerization, condensation reaction, and formation of tree lipid, asphaltene and so on. These substances can increase the hygroscopicity of oil. Therefore, in general, the capacity of old oil to water is greater than that of new oil.
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