Engine Safety System

Marine Online

29 Dec 201702:11

Summary

TLDRThe script discusses a control and safety system for an engine, emphasizing the role of transmitters in sending signals for alarms and monitoring through a junction box. It highlights the importance of daily logging and comparison of manometer and thermometer readings with the alarm system's values. The engine is safeguarded by overspeed trips, both mechanical and electropneumatic, ensuring an automatic shutdown if parameters exceed preset limits, thereby maintaining operational safety.

Takeaways

📡 The engine is equipped with a control and safety system that includes transmitters for alarm and monitoring purposes.
🔍 Signals from these transmitters are sent to a junction box, allowing for the observation of the engine's operation while it is running.
📊 The engine is also fitted with manometers and thermometers that require daily logging and comparison with the alarm and monitoring system's readings.
⚠️ If the monitored signals deviate from the preset intervals, the alarm and monitoring system will trigger an alarm.
🛑 The safety system includes transmitters and switches that can cause the engine to shut down if values are outside the safe operating range.
🔔 Overspeed trips are installed on the engine to prevent damage or failure due to excessive rotational speed.
🔩 There are two types of overspeed trips: mechanical, which is triggered by a spring-loaded weight on the camshaft, and electropneumatic, which is activated by an electrical signal.
🔌 The electropneumatic overspeed trip is controlled by a signal from the tackle relay, ensuring a quick response to potential engine issues.
📝 Regular monitoring and logging of engine parameters are crucial for maintaining the engine's performance and safety.
🚫 The system is designed to prevent operation outside of safe parameters, ensuring the engine's safe and efficient operation.
🛠️ Maintenance personnel should be familiar with the engine's alarm and monitoring system to respond appropriately to any alarms or deviations.

Q & A

What is the primary function of the control and safety system in an engine?
-The control and safety system in an engine is designed to monitor and control the engine's operation to ensure it runs within safe parameters, and to trigger alarms or shut down the engine if certain conditions are not met.
How do transmitters in the engine's control and safety system send signals?
-Transmitters send signals for the alarm and monitoring system via the junction box, allowing for the observation of engine operation signals while the engine is running.
What is the purpose of the alarm and monitoring system in the engine?
-The alarm and monitoring system allows for the observation of engine signals to ensure that the engine is operating within the preset intervals. If the signals are outside these intervals, the system triggers an alarm.
What additional equipment is the engine equipped with for monitoring purposes?
-The engine is equipped with numerous manometers and thermometers, which should be logged daily and compared to the values observed on the alarm and monitoring system.
Why is it important to log and compare the readings from the manometers and thermometers?
-Logging and comparing these readings help in identifying any deviations from the normal operation, which could indicate potential issues or the need for maintenance.
What happens if the monitored signals are outside the preset intervals?
-If the monitored signals are outside the preset intervals, the alarm and monitoring system will trigger an alarm, and the safety system will initiate an engine shutdown to prevent damage or accidents.
What are overspeed trips and why are they fitted to the engine?
-Overspeed trips are safety devices fitted to the engine to prevent it from operating at speeds that could cause damage. They are designed to trigger a shutdown if the engine speed exceeds safe limits.
How does the mechanical overspeed trip function?
-The mechanical overspeed trip is triggered by a spring-loaded weight on the camshaft, which activates when the engine speed exceeds a certain threshold.
What is the role of the electropneumatic overspeed trip in the engine's safety system?
-The electropneumatic overspeed trip is triggered by an electrical signal transmitted by the tackle relay, which activates the trip in response to overspeed conditions.
How does the alarm and monitoring system contribute to the overall safety of the engine operation?
-The alarm and monitoring system contributes to the overall safety by continuously monitoring the engine's operation and alerting operators to any deviations from the safe operating parameters, allowing for timely intervention.
What is the significance of the junction box in the engine's control and safety system?
-The junction box is significant as it serves as the conduit through which transmitters send signals to the alarm and monitoring system, enabling centralized monitoring and control of the engine's operation.

Outlines

00:00

🚀 Engine Control and Safety Systems Overview

This paragraph introduces the engine's control and safety systems, highlighting the role of transmitters in sending signals for an alarm and monitoring system. It emphasizes the importance of daily logging of manometers and thermometers and comparing these with the alarm system's readings. The text also explains the engine's safety shutdown mechanism activated by transmitters when values exceed preset intervals, including the use of overspeed trips, both mechanical and electropneumatic, which are triggered by different means to ensure engine safety.

Mindmap

Keywords

💡Control and safety system

A control and safety system is an integral part of any engine's operation, ensuring that the engine functions within safe parameters and responds appropriately to abnormal conditions. In the video, it is mentioned that the engine is equipped with a control and safety system that includes transmitters for alarms and monitoring, which is essential for maintaining engine performance and preventing potential hazards.

💡Transmitters

Transmitters in the context of the video refer to devices that send signals for various engine functions, including alarms and monitoring. They are crucial for the control and safety system, as they provide real-time data that can be observed and analyzed to ensure the engine is operating within acceptable parameters. For example, the script mentions that transmitters send signals for the alarm and monitoring system via the junction box.

💡Alarm and monitoring system

The alarm and monitoring system is a critical component that alerts operators to potential issues with the engine. It monitors the signals received from various transmitters and triggers alarms if values deviate from preset intervals. This system is vital for preemptive action and maintaining engine safety, as illustrated in the script where it is stated that the system would trigger an alarm if signals are outside the preset intervals.

💡Junction box

A junction box is a central point where multiple electrical connections are made. In the context of the video, the junction box is where the signals from the transmitters are sent to the alarm and monitoring system. It serves as an essential hub for the engine's control and safety system, facilitating the flow of information necessary for engine monitoring.

💡Manometers

Manometers are instruments used to measure the pressure of a fluid. In the video, it is mentioned that the engine is equipped with numerous manometers, which should be logged daily and compared to the values observed on the alarm and monitoring system. These devices are crucial for monitoring the engine's internal pressures and ensuring that they remain within safe operating ranges.

💡Thermometers

Thermometers are devices used to measure temperature. The script specifies that the engine is equipped with thermometers that should be logged daily, indicating the importance of temperature monitoring in the engine's operation. Temperature readings are compared with the alarm and monitoring system to ensure that the engine does not overheat or operate outside of safe temperature limits.

💡Overspeed trips

Overspeed trips are safety devices designed to shut down the engine if it rotates faster than its safe operating speed. The video mentions that there are two types of overspeed trips fitted to the engine: mechanical and electropneumatic. These trips are essential for preventing damage to the engine due to excessive rotational speeds.

💡Mechanical overspeed trip

A mechanical overspeed trip is a type of safety device that is triggered by a physical mechanism, such as a spring-loaded weight on the camshaft, as mentioned in the script. This type of trip is a crucial backup to the electronic systems, ensuring that even if electrical systems fail, the engine can still be safely shut down in case of overspeed.

💡Electropneumatic overspeed trip

An electropneumatic overspeed trip is a safety device that combines electrical and pneumatic (air pressure) systems to trigger a shutdown if the engine speed exceeds safe limits. The script specifies that this type of trip is triggered by an electrical signal transmitted by the tackle relay, indicating its reliance on both electrical and air pressure systems for operation.

💡Tackle relay

A tackle relay is a type of electrical switch that is used to control the flow of current in a circuit. In the context of the video, the tackle relay is responsible for transmitting the electrical signal that triggers the electropneumatic overspeed trip. This component is a critical link in the engine's safety system, ensuring that the engine can be shut down safely if necessary.

💡Engine shutdown

Engine shutdown refers to the process of safely stopping the engine's operation. In the video, it is mentioned that the safety system, including overspeed trips, will result in an engine shutdown if values are outside the preset interval. This is a crucial safety measure to prevent damage to the engine and ensure the safety of personnel and equipment.

Highlights

Engine equipped with a control and safety system for monitoring and alarm purposes.

Transmitters send signals for the alarm and monitoring system.

Engine operation can be monitored in real-time via the junction box.

Engine equipped with manometers and thermometers for daily logging and comparison.

Alarm and monitoring system triggers an alarm if values are outside preset intervals.

Engine has a safety system that can shut down the engine if values are out of range.

Engine fitted with overspeed trips to prevent damage from excessive speed.

Two types of overspeed trips are used: mechanical and electropneumatic.

Mechanical overspeed trip activated by a spring-loaded weight on the camshaft.

Electropneumatic overspeed trip triggered by an electrical signal from the tackle relay.

Daily logging of engine parameters is essential for monitoring and comparison.

Pre-set intervals are crucial for the alarm and monitoring system to function properly.

Engine shutdown is a critical safety feature to prevent catastrophic failures.

Junction box plays a key role in the real-time monitoring of engine operation.

Transmitters are vital components for the alarm and monitoring system's functionality.

Engine safety systems are designed to protect against potential hazards.

Proper monitoring and response to alarms are essential for engine safety.

Comparing daily logged values to alarm system readings ensures engine performance is within acceptable limits.