What are the characteristics of marine accessories?
What are the characteristics of marine accessories? Mooring piles can also be referred to as guide piles, which refer to piles that can be fixed on the deck or wharf and used to retract cables. They are generally made of metal casting and welding. This is a kind of ship equipment, so it is often used at seaside. Attention must be paid to the maintenance of mooring piles on the riverside, riverside or on the deck. The so-called mooring piles and strapping piles are because they are tied to these bollards with marine ropes to fix the direction of the ship. They are generally used to install on the deck or wharf. The weight of the piles is selected according to different places. There are also big differences. Generally, the existing formats on the market include single and double cross piles, vertical piles, claw-type piles, etc. In fact, everyone is concerned about the base accessories. The characteristics of marine accessories are also moorable. diameter.
The manufacturing of marine accessories must be equipped with power plants and auxiliary equipment that meet the requirements of the regulations before they can sail on the water. These power plants include ship main power plants, auxiliary power plants, steam boilers, refrigeration and air-conditioning plants, compressed air plants, marine pumps and piping systems, water supply plants and automation systems. This kind of electromechanical equipment is mainly concentrated in the engine room, and the technical department that manages these equipment is the engineering department.
One is the main power unit.
The main power unit of a ship, also known as the main engine, is the heart of the ship and an important part of the ship's power equipment. Marine bearings mainly include:
(1) Ship main engine.
A general term for engines that can generate propulsion for ships, including various pumps, heat exchangers, and piping systems that serve the main engine. At present, the main engine of commercial ships is mainly marine diesel engines, followed by steam turbines.
(2) Transmission device.
The equipment that transmits the power of the main engine to the propeller can not only transmit power, but also play the role of deceleration and shock absorption. The ship can use the transmission equipment to change the direction of rotation of the propeller. The transmission equipment is slightly different according to the type of the host, and generally consists of a reducer, a clutch, a coupling, a coupling, a thrust bearing, and a ship shaft.
(3) Shaft and propeller.
In ship propellers, propellers are widely used, and fixed pitch or adjustable pitch propellers are mostly used; ship shafting is a device that transmits the power from the main engine to the propeller. The main engine of the ship drives the propeller to rotate through the transmission device and the shaft system to generate thrust, overcome the resistance of the hull, and make the ship move forward or backward.
The second is the auxiliary power unit.
Ship auxiliary power unit, also known as auxiliary engine, refers to the ship generator, which provides power to the ship in normal and emergency situations. The marine power station is composed of electromechanical equipment such as engine block and switchboard.
(1) Generator set.
The prime mover is mainly provided by diesel engines. Based on the consideration of ship safety and reliability and simple maintenance and management, large ships are equipped with more than two diesel generators of the same model, which can generate multiple generators at the same time as required. In order to save energy, some ships can use the drive shaft of the main engine to drive the generator to generate electricity (shaft generator), or use the waste heat of the main exhaust to generate low-pressure steam to drive the generator set to generate electricity.
(2) Switchboard.
It distributes, controls, controls, transports, transforms, and transforms to ensure the needs of various electric traction equipment and the life, lighting, signal and communication of the whole ship.