【Daily Question No. 309】November 11, 2018
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【Daily Question No. 309】November 11, 2018: Briefly explain why it is necessary to drain water before starting a steam turbine Because before starting the turbine, it is necessary to warm the pipes and the machine; when steam comes into contact with cold surfaces inside the cylinders, it immediately condenses into water. If this condensed water is not removed in time, the high-speed steam flow can carry this water back into the cylinders, damaging the blades or causing erosion of them. Furthermore, when the machine is shut down, condensation water can form inside the cylinders, leading to corrosion of their interior. Furthermore, during operation, *improper operation of some boilers* can lead to steam carrying water or water hammer, which in turn can cause water to enter the cylinders. It is necessary to remove this water from the cylinders to ensure the safety of the equipment. *Therefore, the steam trap must be opened to drain water before starting up.* (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Correct: 3 wealth, Incorrect: 1 wealth ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below
During pipe and system warming up before startup, the steam is supercooled and immediately condenses into water. If the condensate is not drained in time, the high-speed airflow will carry water into the cylinder and damage the blades. Therefore, the water in the pipes must be drained completely before starting up. After the pipeline drainage is completed and before the turbine is started, steam in the cylinder will condense into water; if this water is not removed, it can cause erosion of the blades. Additionally, when the machine is shut down, condensed water remains in the cylinders, which can cause corrosion inside them. Therefore, the cylinder also needs to be hydrophobic.
During pipe and system warming up before startup, the steam is supercooled and immediately condenses into water. If the condensate is not drained in time, the high-speed airflow will carry water into the cylinder and damage the blades. Therefore, the water in the pipes must be drained completely before starting up. After the pipeline drainage is completed and before the turbine is started, steam in the cylinder will condense into water; if this water is not removed, it can cause erosion of the blades. Additionally, when the machine is shut down, condensed water remains in the cylinders, which can cause corrosion inside them. Therefore, the cylinder also needs to be hydrophobic.
Because before starting the turbine, it is necessary to warm the pipes and the machine; when steam comes into contact with cold surfaces inside the cylinders, it immediately condenses into water. If this condensed water is not removed in time, the fast-flowing steam will carry away that water
Because before starting the turbine, it is necessary to warm the pipes and the machine; when steam comes into contact with cold surfaces inside the cylinders, it immediately condenses into water. If this condensed water is not removed in time, the high-speed steam flow can carry this water back into the cylinders, damaging the blades or causing erosion of them. Furthermore, when the machine is shut down, condensation water can form inside the cylinders, leading to corrosion of their interior. Furthermore, during operation, *improper operation of some boilers* can lead to steam carrying water or water hammer, which in turn can cause water to enter the cylinders. It is necessary to remove this water from the cylinders to ensure the safety of the equipment. *Therefore, the steam trap must be opened to drain water before starting up.*
During pipe and system warming up before startup, the steam is supercooled and immediately condenses into water. If the condensate is not drained in time, the high-speed airflow will carry water into the cylinder and damage the blades. Therefore, the water in the pipes must be drained completely before starting up. After the pipeline drainage is completed and before the turbine is started, steam in the cylinder will condense into water; if this water is not removed, it can cause erosion of the blades. Additionally, when the machine is shut down, condensed water remains in the cylinders, which can cause corrosion inside them. Therefore, the cylinder also needs to be hydrophobic.
During pipe and system warming up before startup, the steam is supercooled and immediately condenses into water. If the condensate is not drained in time, the high-speed airflow will carry water into the cylinder and damage the blades. Therefore, the water in the pipes must be drained completely before starting up. After the pipeline drainage is completed and before the turbine is started, steam in the cylinder will condense into water; if this water is not removed, it can cause erosion of the blades. Additionally, when the machine is shut down, condensed water remains in the cylinders, which can cause corrosion inside them. Therefore, the cylinder also needs to be hydrophobic.
During pipe and system warming up before startup, the steam is supercooled and immediately condenses into water. If the condensate is not drained in time, the high-speed airflow will carry water into the cylinder and damage the blades. Therefore, the water in the pipes must be drained completely before starting up.
Low steam temperature can result in moisture content, which, upon entering the machine, can cause water hammer effects; it can also disrupt the speed control system
If the condensate is not drained in time, the high-speed airflow will carry water into the cylinder and damage the blades. Therefore, the water in the pipes must be drained completely before starting up