【Q&A Question 229】2018.08.23
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【Q&A Question 229】August 23, 2018: Briefly explain why a reciprocating compressor must be stopped when the cooling water supply is interrupted When the cooling water supply is interrupted, a large amount of heat generated during compression cannot be removed, causing the gas temperature to rise rapidly. This not only results in the compressor having to perform adiabatic compression and thus consume energy, but it can also lead to serious accidents ； If the cylinder temperature rises, leading to an increase in the temperature of both the cylinder and the piston, this can cause the cylinder and piston to stick together. Excessively high temperatures reduce the mechanical strength of the equipment as well as its capacity to withstand pressure. Additionally, if cooling water supply is suddenly restored while the equipment’s materials are still at high temperatures, it may result in sudden cooling shock that could lead to explosions and damage to the equipment; therefore, the compressor must be stopped in case of a disruption in the cooling water supply. (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
When the cooling water supply is interrupted, a large amount of heat generated during compression cannot be removed, causing the gas temperature to rise rapidly. This not only results in the compressor having to perform adiabatic compression and thus consume energy, but it can also lead to serious accidents； If the cylinder temperature rises, leading to an increase in the temperature of both the cylinder and the piston, this can cause the cylinder and piston to stick together. Excessively high temperatures reduce the mechanical strength of the equipment as well as its capacity to withstand pressure. Additionally, if cooling water supply is suddenly restored while the equipment’s materials are still at high temperatures, it may result in sudden cooling shock that could lead to explosions and damage to the equipment; therefore, the compressor must be stopped in case of a disruption in the cooling water supply.
The piston compresses the gas, causing an increase in its internal energy and thus a rise in temperature. The compressed gas needs to be cooled before it enters the next stage; failure to do so will result in even higher temperatures in the gas at that subsequent stage, which can eventually lead to overheating and damage of components such as valve plates and piston rings
After the cooling water supply is interrupted, the heat generated during gas compression cannot be dissipated, causing the temperature of the cylinder, packing, and other components to rise sharply. At the same time, rising temperatures reduce the strength of the equipment and also cause changes in the metal composition, thereby decreasing its pressure-bearing capacity. Or, if cooling water is suddenly restored to the equipment when it is at high temperature, rapid cooling of the equipment may cause it to explode, resulting in damage to the equipment and accidents.
After the cooling water supply is stopped, the large amount of heat generated by the compressor during gas compression cannot be dissipated (gas compression releases heat), causing the temperatures of the compressor’s main components to rise excessively, which affects its service life. At too high temperatures, it becomes more difficult to compress the gas, resulting in reduced efficiency.
Answer: When the cooling water supply is interrupted, a large amount of heat generated during compression cannot be dissipated, causing the gas temperature to rise rapidly. This not only results in the compressor having to perform adiabatic compression and thus consume energy, but it can also lead to serious accidents； If the cylinder temperature rises, leading to an increase in the temperature of both the cylinder and the piston, this can cause the cylinder and piston to stick together. Excessively high temperatures reduce the mechanical strength of the equipment as well as its capacity to withstand pressure. Additionally, if cooling water supply is suddenly restored while the equipment’s materials are still at high temperatures, it may result in sudden cooling shock that could lead to explosions and damage to the equipment; therefore, the compressor must be stopped in case of a disruption in the cooling water supply.
After the cooling water supply is interrupted, the heat generated during gas compression cannot be dissipated, causing the temperature of the cylinder, packing, and other components to rise sharply. At the same time, rising temperatures reduce the strength of the equipment and also cause changes in the metal composition, thereby decreasing its pressure-bearing capacity. Or, if cooling water is suddenly restored to the equipment when it is at high temperature, rapid cooling of the equipment may cause it to explode, resulting in damage to the equipment and accidents. A pressure switch can be used to create interlocking!
When the cooling water supply is interrupted, a large amount of heat generated during compression cannot be removed, causing the gas temperature to rise rapidly. This not only results in the compressor having to perform adiabatic compression and thus consume energy, but it can also lead to serious accidents； If the cylinder temperature rises, leading to an increase in the temperature of both the cylinder and the piston, this can cause the cylinder and piston to stick together. Excessively high temperatures reduce the mechanical strength of the equipment as well as its capacity to withstand pressure. Additionally, if cooling water supply is suddenly restored while the equipment’s materials are still at high temperatures, it may result in sudden cooling shock that could lead to explosions and damage to the equipment; therefore, the compressor must be stopped in case of a disruption in the cooling water supply.
After the cooling water supply is interrupted, the heat generated during gas compression cannot be dissipated, causing the temperature of the cylinder, packing, and other components to rise sharply. At the same time, rising temperatures reduce the strength of the equipment and also cause changes in the metal composition, thereby decreasing its pressure-bearing capacity. Or, if cooling water is suddenly restored to the equipment when it is at high temperature, rapid cooling of the equipment may cause it to explode, resulting in damage to the equipment and accidents.
After the cooling water supply is interrupted, the heat generated during gas compression cannot be dissipated, causing the temperature of the cylinder, packing, and other components to rise sharply. At the same time, rising temperatures reduce the strength of the equipment and also cause changes in the metal composition, thereby decreasing its pressure-bearing capacity. Or, if cooling water is suddenly restored to the equipment when it is at high temperature, rapid cooling of the equipment may cause it to explode, resulting in damage to the equipment and accidents.
After the cooling water supply is interrupted, the heat generated during gas compression cannot be dissipated, causing the temperature of the cylinder, packing, and other components to rise sharply. At the same time, rising temperatures reduce the strength of the equipment and also cause changes in the metal composition, thereby decreasing its pressure-bearing capacity. Or, if cooling water is suddenly restored to the equipment when it is at high temperature, rapid cooling of the equipment may cause it to explode, resulting in damage to the equipment and accidents.