【Daily Question】Chemical Engineering Principles 432: Hydrogen Humidity (September 20)
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The Chemical Engineering Theory section is launching the \"One Question per Day\" campaign starting today, aimed at helping everyone reinforce their basic knowledge of chemical engineering. Subsequent series will include those on \"Principles of Chemical Engineering,\" \"Mass Transfer and Separation,\" \"Thermodynamics in Chemical Engineering,\" and \"Chemical Process Engineering.\" We hope you will give it your active support! Wishing you a happy Christmas! Answers to the questions in the \"One Question per Day\" campaign can be viewed directly by replying to the post, and the thread will be closed after 1 day ! To encourage everyone’s continued participation this year! Participation earns 3 wealth points, with an additional 4 wealth points for correct answers~~~ Short answer question: Humidity often increases inside generators; what is the main source of this moisture? Leak in generator internal cooler
Firstly, the pressure of the stator cooling water was not adjusted properly; it was higher than the hydrogen pressure. Water leakage from the stator cooling water system into the generator caused high humidity in the hydrogen. Secondly, in the case of hydrogen cooling for generators, leaks in the tubes allow water to enter the generator, increasing the humidity of the hydrogen. Third, the humidity of hydrogen is high before hydrogen filling and refilling. Fourthly, the water content in the generator’s seal oil is above the acceptable level; this is due to the fact that the seal oil system has not been drained of water for a long time. Additionally, water gets into the generator as a result of leakage at the seal surfaces. However, this is not the main source of water inside the generator. The primary reason is the high water content in the seal oil – the oil with high humidity on the air side moves towards the hydrogen side, where the water in the oil gets splashed into mist or vaporized. Under the pressure exerted by the generator fan, this water enters the generator through the seal surfaces.
Firstly, the pressure of the stator cooling water was not adjusted properly; it was higher than the hydrogen pressure. Water leakage from the stator cooling water system into the generator caused high humidity in the hydrogen. Secondly, in the case of hydrogen cooling for generators, leaks in the tubes allow water to enter the generator, increasing the humidity of the hydrogen. Third, the humidity of hydrogen is high before hydrogen filling and refilling. Fourthly, the water content in the generator’s seal oil is above the acceptable level; this is due to the fact that the seal oil system has not been drained of water for a long time. Additionally, water gets into the generator as a result of leakage at the seal surfaces. However, this is not the main source of water inside the generator. The primary reason is the high water content in the seal oil – the oil with high humidity on the air side moves towards the hydrogen side, where the water in the oil gets splashed into mist or vaporized. Under the pressure exerted by the generator fan, this water enters the generator through the seal surfaces.
Water in the turbine oil of the generator bearing sealing system seeps in