How Much Do You Know About Marine Propellers?

A ship in operation must be equipped with various equipment. Through the application of these equipment, the ship's navigation, berthing and disembarking, cargo loading and unloading and other production operations can be completed, and the safety of the ship and personnel can be guaranteed. The main equipment of the ship includes power equipment, manoeuvring equipment, loading and unloading equipment and safety equipment.
1. Main power device of ship propeller
The ship's main power device, also known as "main engine", is the heart of the ship and an important part of the ship's power equipment, mainly including the main engine, transmission device, shafting and propeller.
2. Auxiliary power unit
The auxiliary power device of the ship includes: propulsion device - the main engine drives the propeller (propeller is the main type) through the reduction device and transmission shafting.
3. Steam boiler
All ships with diesel engine as the main engine need to be equipped with steam boiler, which is composed of auxiliary fuel oil boiler and exhaust gas boiler, as well as the pipe system and equipment for its supporting services. Auxiliary oil-fired boiler is used to supply some auxiliary steam on the ship, such as heating oil and lubricating oil, heating, domestic water, kitchen, boiling water, etc., and to meet the needs of steam for some auxiliary engines.
4. Refrigeration and air conditioning unit
Refrigeration devices are installed on ships to refrigerate goods, refrigerate a certain amount of food, and improve the living and working conditions of crew and passengers. The task of the air conditioning device is to maintain the climate conditions suitable for people's work and life in the cabin, including cooling and dehumidification in summer, heating and humidification in winter, and ventilation throughout the year.
5. Compressed air device
Generally, the ship is equipped with multiple air compressors and multiple compressed air cylinders to supply the compressed air required by the whole ship, such as starting the main and auxiliary diesel engines with compressed air; Host commutation; Provide air source for air whistle, deck pneumatic machinery and other equipment. Its main equipment includes air compressor, gas cylinder, pipe system, safety and control elements, etc.
6. Marine pump and pipeline system
In order to pump seawater, fresh water, fuel oil, lubricating oil and other liquids on the ship, a certain number and different types of pumps are required. Connected with the pump, the ship is equipped with pipelines for various purposes, which can be divided into power system and ship system according to different purposes.
7. Water making device
Water generator, also known as water generator, is a device that heats seawater under vacuum to generate steam, and then condenses the steam into fresh water.
8. Automation system
With the progress of science and technology and the extensive application in ships, the engine room control system is becoming more and more advanced. The remote control and centralized control of ship power plant has greatly improved the working conditions of the crew, improved the working efficiency and reduced the maintenance and repair workload.