国产精品无码AV无码,蜜臀久久久久久999草草,啊灬啊别停灬啊灬快点,美女露0的无挡写真

Your Position: Home > News > Industry News

Harm of water content in turbine oil and how to use oil filter to dewater

2020/1/5??????view:

  1. Possible harm of water content in turbine oil of power plant

  There are two possible forms of water in turbine oil: dissolved water and free water. The dissolved water is the water evenly distributed in the oil. Under the operating conditions of the power plant, the large concentration of water dissolved in the oil is about 150mg / L (the specific value is related to the oil composition, temperature, additives, etc.). Free water is the water in oil in the form of small water droplets. These small water droplets have small particle size due to impurities, and sometimes it is difficult to separate them from oil. The appearance of lubricating oil containing free water is turbid, while that only containing dissolved water is transparent. Because of the strong mixing of the turbine oil tank system in the power plant, only the water in excess of the solubility will exist in the form of free water. In other words, if the oil contains free water, the appearance is turbid, and the water content is above 150mg / L. The harm of water content in turbine oil mainly lies in the following aspects:

  (1) Oil emulsification may occur, resulting in poor adhesion of the lubricating oil, insufficient adhesion of the oil to the friction surface, damage of the oil film, dry friction between the rotor journal and the bearing pad of the bearing, burning of the bearing pad, strong vibration of the unit, and even damage of the machine.

  (2) The water content of turbine oil will accelerate the oxidation of turbine oil, increase the acid value and produce more oxidation precipitates, thus prolonging the anti emulsification time of turbine oil and deteriorating the anti emulsification performance of oil.

  (3) The water content of turbine oil will rust the carbon steel pipes and components in the oil system, cause jamming and reduce the sensitivity of action. In serious cases, it will also cause the regulation and security devices to refuse to operate, which will lead to the occurrence of overspeed accident of the unit.

  (4) The corrosion product produced by water in turbine oil is an important source of particles in the oil. The water content of turbine oil will make the particle size of oil easy to exceed the standard, the filter element of oil filter will be changed frequently, and the workload of operation and maintenance will be heavy. In order to reduce the harm of water content in turbine oil, the water content in lubricating oil is less than 100mg / L according to the quality standard of turbine oil in power plant operation issued by China.

  2. To analyze the water content of turbine oil, first of all, efforts should be made from the source of water leakage, try to find out the water leakage point, analyze the causes, reduce and eliminate the water leakage. However, the water leakage of many units is a long-term reality, especially some old units, which is difficult to solve due to the limitations of many conditions. Under the condition that the water leakage is difficult to change, it is an effective way to use proper dehydration equipment to remove the water leaked into the turbine oil system. At present, there are three kinds of technologies suitable for dehydration of turbine oil system: coalescence separation, centrifugal separation and vacuum dehydration. The dewatering principle of coalescence and separation in coalescence and separation type oil filter is to use the difference of surface tension between oil and water to gather small water beads into large water beads and separate them. Since the concentration of water that can be dissolved in lubricating oil is about 150mg / L (the specific value is related to the oil composition, temperature, additives, etc.), the coalescence separation oil filter can only treat the water to about 180mg / L, which can not be reduced to below the national standard value of 100mg / L. The advantages of coalescing and separating oil filter are simple structure, no need of heating during dehydration, high free water content, fast dehydration speed, convenient operation and high reliability, so it is more widely used in the power industry than other oil filters.

  The base oil of compressor oil can be divided into two kinds, one is mineral oil and the other is synthetic oil. The oil prepared by mineral oil has outstanding lubricity. It can form a thick oil film on the parts, which has strong stability. It can ensure that the oil film will not be damaged under high temperature and high speed, and avoid direct friction between parts. The compressor oil made of synthetic oil has low pour point and volatility. Although its cost is slightly higher than that of mineral oil, it has good economic benefit and little environmental pollution.

  The oil first flows from the inside to the outside and passes through the coalescing filter element. The coalescing filter element is made of special glass fiber and other synthetic materials, which is specially prepared for turbine oil (turbine oil), with good hydrophilicity. Coalescing filter element has dual functions of filtering particle pollutants and coalescing water. The high-precision filter material in the inner layer first filters the particle pollutants of the oil filter in the oil; the demulsification coalescence layer outside gathers the tiny water drops in the oil to form water drops. The larger water droplets will settle to the water collecting tank by their own gravity, and the smaller water droplets will be carried by the oil to the separation filter element before settling. The separation filter element is made of specially treated stainless steel mesh, which has good hydrophobicity. When the oil flows through the separation filter element from the outside to the inside, small water drops are effectively intercepted outside the filter element, only allowing the oil to pass through, not allowing the water to pass through, so as to further separate the water. The oil first enters the coalescer separator after the particles in the oil are removed from the primary oil filter. In coalescing separator, the oil can be removed from water through four processes of filtration, coalescence, sedimentation and separation, and then purified oil can be output. The water settled in the sump is discharged through the drain valve on the sump. At the same time, according to the oil quality, the oil can be directly filtered through the filter to remove the particulate pollutants in the oil, and then the purified oil can be output.

国产人妖乱国产精品人妖| 国产精品宾馆在线精品酒店| 东北熟妇啪啪流白浆| 韩国三级HD中文字幕| 激情综合亚洲色婷婷五月APP| 女厕偷拍TXXXXXXX视频| 饭桌上故意张开腿让公| 小箩莉XXX69SEXHD| 中文人妻熟妇精品乱又伦| 国产SUV精品一区二区四| 久久久久亚洲AV无码专区网站 | 亚洲熟妇丰满多毛XXXX| 日本护士被黑人强伦姧人妻孕| 双XING挨CAO日常美人多汁| 云浮市人力资源和社会保障局| 女人扒开屁股桶爽30分钟| 成人无码一区二区三区免费网站 | 久久久久久国产精品免费免费男同 | 惩罚小核不停高潮H| 局长含了一整晚我的奶头| 国产精品久久久久9999高清| 一本久道综合色婷婷五月| 夜夜性日日交XXX性HD| 无码任你躁久久久久久老妇APP| 国产老熟妇精品观看| 公交车上拨开丁字裤进入| 国产精品久久久久久一区二区三区 | 亚洲熟妇AV日韩熟妇在线| 国产人妻精品一区二区三区不卡| 久久99久久精品免观看吃奶| 嫩草院一区二区乱码| 88蜜桃人妻无码精品系列| 97亚洲狠狠色综合久久久久| 小13箩利洗澡无码免费视频| 欧美亚洲国产精品久久高清| 国内精品久久久人妻中文字幕| 丰满熟女人妻大乳| A级毛片无码免费真人久久| 精品国产18久久久久久| 一本久久A久久精品VR综合| 高潮小受站不住了GAY片|