Compressed Air Line In Ship-Main air, service air,control air system in Engine Room

Basic Marine Engineering Knowledge

10 Aug 202101:26

Summary

TLDRThis video explains the workings of an air compressor system on a ship. It describes how the main air compressor provides high-pressure air to start diesel engines and low-pressure air for various parts like driving motors. It also covers the control air compressor's role in supplying air for control systems, and the use of an emergency air compressor during power failures. Additionally, it highlights the system's air dryer for moisture removal and the interconnecting valve that ensures low-pressure air for controls during maintenance.

Takeaways

🔧 The main air compressor provides high-pressure air to the main air reservoir for starting diesel engines.
📦 Air from the main air reservoir is reduced in pressure to supply low-pressure air to components like driving air motors.
🚛 Low-pressure air is used to operate gangway motors and other parts of the system.
🔩 The control air compressor supplies low-pressure air to the control air reservoir for control systems.
💧 An air dryer removes moisture from the air, ensuring dry air throughout the system.
🔀 An interconnecting valve supplies low-pressure air for controls by linking the control and service air lines.
🛠 During maintenance of the control air compressor, an emergency air compressor can be used independently of the main power system.
⚡ The emergency air compressor supplies air to the emergency air reservoir for critical systems during power failures.
🔌 Air from the emergency reservoir is used to start generators in case of emergencies.
📊 The script references typical technical specifications for compressors for guidance.

Q & A

What is the main purpose of the main air compressor?
-The main air compressor supplies high pressure air to the main air reservoir, where it is stored and used to start diesel engines.
How is low pressure air supplied in the system?
-Air from the main air reservoir passes through a pressure reducing valve to supply low pressure air for other parts, such as driving air motors for gangways.
What does the control air compressor do?
-The control air compressor supplies low pressure air to the control air reservoir, where it is stored and used for control systems.
What role does the air dryer play in the system?
-The air dryer in the system removes moisture completely, ensuring dry air is used in the system.
What is the purpose of the interconnecting valve between the control airline and service airline?
-The interconnecting valve supplies low pressure air for controls during maintenance of the control air compressor.
What happens during the maintenance of the control air compressor?
-During maintenance, an emergency air compressor can be operated independently of the ship's main power system to supply air to the emergency air reservoir.
When is the air in the emergency air reservoir used?
-The air stored in the emergency air reservoir is used for starting generators during power failures or other emergencies.
What is the emergency air compressor’s key feature?
-The emergency air compressor can operate independently of the ship's main power system, providing a backup air supply during emergencies.
Why is moisture removal important in this system?
-Moisture removal is important to prevent damage to system components and ensure efficient air supply, which is achieved by the air dryer.
What are typical technical specifications for compressors mentioned in the script?
-The script refers to typical technical specifications for compressors, although specific details are not provided, it implies that reference values are available.

Outlines

00:00

🛠️ Main Air Compressor System Overview

The main air compressor supplies high-pressure air to the main air reservoir, where it is stored and used to start diesel engines. The air from this reservoir is passed through a pressure-reducing valve to provide low-pressure air for various other systems, such as the driving air motors for the gangway.

🌬️ Control Air Compressor and Its Role

The control air compressor supplies low-pressure air to the control air reservoir, where it is stored for use in control systems. The system also includes an air dryer to remove moisture completely, ensuring the air remains dry.

🔗 Interconnecting Valve for Air Supply

An interconnecting valve links the control airline with the service airline, providing low-pressure air to control systems during maintenance operations on the control air compressor.

🚨 Emergency Air Compressor Function

The emergency air compressor operates independently of the ship's main power system and supplies air to the emergency air reservoir. This air is used to start generators in case of power failures or emergencies, ensuring backup power supply.

📊 Compressor Technical Specifications

Technical specifications for compressors are provided as a reference, likely including important operational data like pressure, capacity, and maintenance requirements.

Mindmap

Keywords

💡Main Air Compressor

The main air compressor is a device that supplies high-pressure air to the main air reservoir. It is crucial for the operation of diesel engines, as this air is used to start them. The video emphasizes the compressor's role in providing air to multiple systems aboard, making it a central part of the air supply network.

💡Main Air Reservoir

This is the storage unit where the high-pressure air from the main air compressor is kept. The air stored here is utilized for essential functions, such as starting diesel engines. The reservoir acts as a buffer, ensuring that air is readily available when needed.

💡Pressure Reducing Valve

The pressure-reducing valve lowers the high-pressure air from the main air reservoir to a manageable level for other parts of the system. This controlled air pressure is necessary for operating components like driving air motors, ensuring proper functioning without overloading the system.

💡Control Air Compressor

The control air compressor generates low-pressure air, which is stored in the control air reservoir. This air is specifically used for control systems aboard the ship, highlighting its critical role in regulating operations without relying on high-pressure sources.

💡Air Dryer

The air dryer removes moisture from the air in the system, ensuring that the air is dry before it is utilized by various components. This is important because moisture can cause damage or corrosion in pneumatic systems, impacting their efficiency and longevity.

💡Emergency Air Compressor

This compressor operates independently of the ship's main power system and can be activated during emergencies, such as power failures. It provides air to the emergency air reservoir, ensuring that critical systems like generators can be started when primary power is unavailable.

💡Emergency Air Reservoir

The emergency air reservoir stores air provided by the emergency air compressor. It is used in critical situations, such as starting generators during a power failure. This ensures the ship can continue to function, even in the event of an emergency.

💡Interconnecting Valve

The interconnecting valve links the control airline and the service airline, allowing for the supply of low-pressure air to controls when the control air compressor is undergoing maintenance. This ensures system continuity, even when part of the air system is offline.

💡Driving Air Motors

These motors are powered by low-pressure air supplied through the pressure-reducing valve. In this context, they are used for driving components like gangways. They highlight how pneumatic systems can be used to drive mechanical operations on board the ship.

💡Technical Specifications

These refer to the typical operational parameters or guidelines for the compressors mentioned in the video. Technical specifications provide detailed performance information, such as pressure levels, capacity, and operational limits, ensuring that systems run efficiently and safely.

Highlights

The main air compressor supplies high-pressure air to the main air reservoir for diesel engine start-up.

Air from the main air reservoir passes through a pressure reducing valve to supply low-pressure air for other components.

Low-pressure air is used to operate driving air motors for gangways and other equipment.

The control air compressor supplies low-pressure air to the control air reservoir for control systems.

The air dryer in the system ensures moisture is removed completely, maintaining air quality.

An interconnecting valve between the control and service airlines allows for low-pressure air supply during control air compressor maintenance.

An emergency air compressor operates independently of the ship's main power system.

The emergency air compressor supplies air to the emergency air reservoir.

Air stored in the emergency air reservoir is used for starting generators during power failures or emergencies.

The control and service air systems are interconnected, ensuring redundancy during maintenance.

The emergency air compressor provides a critical backup in case of main power system failures.

The system's air dryer component plays a key role in maintaining efficiency and preventing moisture buildup.

Both control and service air systems rely on pressure regulation to ensure optimal functioning of various ship components.

The system allows for multiple compressors and reservoirs to maintain reliable air pressure for ship operations.

Technical specifications for compressors vary and are important for system design and performance.