【Q&A Question 220】2017.08.08
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【Q&A Question 220】August 08, 2017: What are the ways to activate the emergency protection device of a turbine? The reference answers can be seen after responding; points will be awarded for identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) The emergency shutdown device can be activated in the following ways: (1) Manually: Press the handle of the emergency shutdown device downward ； (2) Rotor axial displacement: The pull hook is lifted by the rotor’s shoulder and disengages ； (3) Emergency circuit breaker operation: The pull hook is struck by a flying hammer that is ejected due to the force of the spring, causing tripping ； All of the above actions involve shutting off the pressure oil and simultaneously releasing the quick-shut oil, thereby closing the quick-shut valve and cutting off the steam supply to the turbine. After 7 days of daily activities, it shuts down and shows the answers automatically. (2017-8-14) Scoring criteria: Errors result in 2 Wealth points for participation; *incomplete* answers earn 3–8 points. Correct answers with detailed explanations grant 10 Wealth points, while answers that are correct but lack sufficient details yield 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 that have nothing to do with the answer are all considered malicious spamming. Points will start to be deducted after three warnings. 2017 Q&A Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have begun) 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 Zone – “Creative Ideas for Energy Savings” campaign (the second phase is in full swing) http://bbs.hcbbs.com/thread-1666758-1-1.html (Source: Haichuan Chemical Industry Forum Website)
1) Manual: Press the emergency shutdown device handle downward； (2) Rotor axial displacement: The pull hook is lifted by the rotor’s shoulder and thus disengages ； (3) Emergency circuit breaker operation: The pull hook is struck by a flying hammer that is propelled out due to the spring force, causing the breaker to trip ； All of the above actions involve cutting off the pressure oil and simultaneously releasing the quick-shut oil, thereby closing the quick-shut valve and stopping the flow of steam into the turbine.
The emergency shutdown device can be activated in the following ways: (1) Manually: Press the handle of the emergency shutdown device downward； (2) Rotor axial displacement: The pull hook is lifted by the rotor’s shoulder and disengages ； (3) Emergency circuit breaker operation: The pull hook is struck by a flying hammer that is propelled out due to the spring force, causing the breaker to trip ； All of the above actions involve cutting off the pressure oil and simultaneously releasing the quick-shut oil, thereby closing the quick-shut valve and stopping the flow of steam into the turbine.
The emergency shutdown device can be activated through the following methods: (1) Manually: pressing the handle of the emergency shutdown device downward; (2) Axial displacement of the rotor: the pull hook is lifted by the protrusion on the rotor, causing it to disengage; (3) Activation of the emergency circuit breaker: the pull hook is struck by a flying hammer that overcomes the spring force, resulting in disengagement； (4) Emergency stop button for the circulation pump in the control room.
Parameters such as rotational speed, expansion difference, and lubricating oil pressure exceeding the specified limits can all trigger the activation of the emergency protection device. First, the sensor detects a signal indicating that parameters have exceeded the limits; it then sends an electrical signal to the solenoid valve. The solenoid valve acts to convert this electrical signal into a hydraulic signal, which in turn activates the emergency protection mechanism.
The emergency shutdown device can be activated in the following ways: (1) Manually: Press the handle of the emergency shutdown device downward； (2) Rotor axial displacement: The pull hook is lifted by the rotor’s shoulder and disengages ； (3) Emergency circuit breaker operation: The pull hook is struck by a flying hammer that is ejected due to the force of the spring, causing tripping ； All of the above actions involve shutting off the pressure oil and simultaneously releasing the quick-shut oil, thereby closing the quick-shut valve and cutting off the steam supply to the turbine.
(1) Manual: Press the emergency shutdown device handle downward； (2) Rotor axial displacement: The pull hook is lifted by the rotor’s shoulder and disengages ； (3) Emergency circuit breaker operation: The pull hook is struck by a flying hammer that is ejected due to the force of the spring, causing tripping ； (4) Emergency stop button for the circulation pump in the control room
1. Manual: Press the handle of the emergency shutdown device downward. 2. Rotor axial displacement: The pull hook is lifted by the protruding shoulder on the rotor and thus disengages. 3. Operation of the emergency cut-off switch: The pull hook is struck by a flying hammer that is propelled out due to the spring force, causing the switch to trip. All of the above actions involve shutting off the pressure oil and simultaneously releasing the quick-shut oil, thereby closing the quick-shut valve and cutting off the flow of air to the turbine.
The emergency shutdown device can be activated in the following ways: (1) Manually: Press the handle of the emergency shutdown device downward； (2) Rotor axial displacement: The pull hook is lifted by the rotor’s shoulder and disengages ； (3) Emergency circuit breaker operation: The pull hook is struck by a flying hammer that is propelled out due to the spring force, causing the breaker to trip ； All of the above actions involve cutting off the pressure oil and simultaneously releasing the quick-shut oil, thereby closing the quick-shut valve and stopping the flow of steam into the turbine.
The emergency shutdown device can be activated in the following ways: (1) Manually: Press the handle of the emergency shutdown device downward； (2) Rotor axial displacement: The pull hook is lifted by the rotor’s shoulder and disengages ； (3) Emergency circuit breaker operation: The pull hook is struck by a flying hammer that is propelled out due to the spring force, causing the breaker to trip ； All of the above actions involve cutting off the pressure oil and simultaneously releasing the quick-shut oil, thereby closing the quick-shut valve and stopping the flow of steam into the turbine.
The first is the quick shut-off valve. The second is the emergency shut-off valve.