Electro hydraulic steering system/ships steering gear/4 ram type steering system

Summary

The video provides an in-depth overview of a RAM-type electro-hydraulic steering gear system. It explains the components such as hydraulic power packs, directional control valves, and isolation valves, and details the operational mechanics from helm orders to rudder movement. The system's safety features, including alarms and emergency procedures during malfunctions, are also highlighted. The process of manual operation during power failures and the shutdown procedure upon reaching port are discussed, emphasizing the importance of maintenance and proper oil levels for optimal performance.

Takeaways

• 🔧 The steering gear system operates on a RAM-type electro-hydraulic mechanism, utilizing two hydraulic power packs for efficient steering control.
• 🛠️ Key components include a directional control valve, isolation valves, bypass valves, relief valves, and a control box that coordinates operations.
• ⚙️ The directional control valve facilitates automatic and manual steering adjustments based on helm orders received from the bridge.
• 📊 Feedback from a potentiometer continuously monitors the rudder stock position, ensuring accurate steering and control.
• 🛢️ Regular checks on hydraulic oil levels are crucial; insufficient oil can impair system performance and lead to component wear.
• 🚨 Alarms are integrated into the system to warn operators of low hydraulic oil levels or when isolation valves are inadvertently shut.
• ⚡ In emergencies, the system can automatically isolate defective components and switch to a backup pump to maintain functionality.
• 📡 If the power supply fails in the control unit, a manual alternative is available to give helm orders using levers for steering control.
• 🛑 The steering gear system is shut down safely when the ship arrives at port, ensuring all components are powered off appropriately.
• 🔍 Regular maintenance and monitoring are essential for optimal operation and safety of the steering gear system.

Q & A

What type of steering gear system is described in the transcript?

The system described is a RAM type electro-hydraulic steering gear.

What are the components of the hydraulic power packs mentioned?

The hydraulic power packs consist of hydraulic pumps and oil reservoirs.

What is the function of the directional control valve?

The directional control valve changes the direction of the hydraulic flow, facilitating steering control.

What role do isolation valves play in the steering system?

Isolation valves are used to isolate a defective system during emergencies to prevent further damage.

How does the tiller arm contribute to the steering process?

The tiller arm converts the linear motion of the Rams into rotary motion of the rudder stock.

What does the potentiometer do in the system?

The potentiometer senses the position of the rudder stock and sends feedback to the control box.

Why is it important to check the hydraulic oil level in the tank?

Insufficient hydraulic oil levels can lead to poor performance of the steering system.

What happens if a leak occurs in one of the hydraulic pipes?

If a leak occurs, the oil level drops, triggering alarms, and if severe, the system gets automatically isolated.

What measures are taken when the power supply fails in the control unit?

An alternative communication system is used to give helm orders manually, allowing the steering to continue operating.

What procedure is followed to shut down the steering gear system at port?

The steering pump motor is switched off, and the control power supply at the bridge is turned off when the ship reaches port.