【Q&A Question 146】2017.05.26

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This post was last edited by 955559 on 2017-7-21 22:51. [Q&A Question 146] May 26, 2017: What causes a screeching sound in the compressor cylinder? The reference answers will be visible after responding; points are awarded by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) (1) A metal piece has fallen between the piston and the cylinder, (2) The piston nut is loose and has come loose, (3) The air valve is loose, (4) There is dust and oil inside the cylinder, (5) The crosshead is misaligned or shifted sideways, (6) The clearance in the slideway is too large, (7) There are assembly errors. Scoring criteria: For each error, 2 wealth points are awarded; if the answer is incomplete, 3–8 points are given. A correct answer accompanied by a detailed explanation earns 10 wealth points, while a correct answer with insufficient additional details yields 15–20 wealth points. Please score according to these criteria. Note: If there are editing records after answering, only those who participated will be given points. For continuous malicious spamming, 2 points will be deducted each time, with no upper limit. Pure numbers, pure emojis, or random letters unrelated to the answer are all considered malicious spamming; points will start to be deducted after three warnings. 2017 Q&A Summary Thread (updating now) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updating now) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (fully updated) http://bbs.hcbbs.com/thread-1597792-1-1.html