【Q&A Question 120】April 30, 2017
Thread Content
【Q&A Question 120】April 30, 2017: What phenomena occur when a reciprocating compressor is operated with liquid present? The reference answer can be seen after responding; scoring is possible by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) 1. Abnormal vibrations in the machine body and cylinders, etc.; 2. Abnormally loud noises; 3. Significant fluctuations in current; 4. Fluctuations in flow rate and pressure ； 5. Pipeline vibration. Scoring criteria: 2 Wealth points for incorrect responses; *incomplete* answers earn 3–8 points. 10 Wealth points are given for correct answers accompanied by detailed explanations; responses that are correct but lack sufficient details earn 15–20 Wealth points. Please score according to these criteria. 2017 Q&A Summary Thread (updates starting now) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates starting now) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html Petrochemical Sector – “Creative Ideas for Energy Savings” Campaign (Sponsors sought; highest returns ever) http://bbs.hcbbs.com/thread-1666758-1-1.html Sponsors are being sought for this campaign; those interested can contact the campaign coordinator. Petrochemical deep processing edition – the event to share pictures of chemical equipment has started! A vast amount of wealth, as well as HChuan coins, are waiting for you to claim them: http://bbs.hcbbs.com/thread-1760733-1-1.html. Notice regarding the collection of chemical engineering technical materials in the \"Petroleum and Chemicals Section\": http://bbs.hcbbs.com/thread-1614796-1-1.html (Source: HChuan Chemical Forum)
Abnormal vibrations occur in the engine and cylinders, there is a knocking sound, the temperature at the cylinder outlet increases significantly, and there are fluctuations in flow rate and pressure.
Vibration increases, the load grows, and the exhaust pressure rises.
During the operation of the compressor, if liquid enters the compressor cylinder, its incompressibility causes intense collisions within the cylinder as a result of the force exerted by the piston. This leads to severe vibrations of the compressor body and loud noise, while at the same time the motor current fluctuates and increases. Slight liquid carryover in the compressor can reduce the gas delivery volume. If severe liquid carryover occurs and is not addressed promptly, it can lead to breaks in components such as the piston rod, connecting rods, connecting rod screws, and crankshaft, or it can damage the cylinder head and piston ； In severe cases, the entire compressor is damaged.
As the compressor load increases, the motor current rises
1. Abnormal vibrations occur in the machine body, cylinders, etc； 2. A heavy, abnormal noise is heard ； 3、Significant fluctuations in current ； 4. Flow fluctuations, pressure fluctuations ； 5. Pipeline vibration.
Abnormal vibrations occur in the engine body, cylinders, etc； Significant fluctuations in current ； Flow and pressure fluctuations ； Pipeline vibration, in severe cases, can lead to cylinder collision accidents
Damage to the compressor, resulting in a safety accident