The production and manufacturing of Dalian marine components is a continuation of ship manufacturing for ships. Due to the fact that the ship carries many spare parts after being drained from the original factory, in addition to all normal wear and tear, there are also accidents and other reasons that cause damage to the parts on the ship. This requires immediate replacement to prevent common faults and risks during sailing.
Ships need to be equipped with a complete set of power plants and auxiliary equipment that meet the requirements of regulations in order to navigate on water. These power devices include ship active devices, auxiliary power devices, steam boilers, refrigeration and air conditioning devices, compressed air devices, marine pumps and piping systems, water generation devices, and automation systems. This type of electromechanical equipment is mainly concentrated in the engine room, and the technical department specifically managing these equipment is the engine department.
What are the main power devices for Dalian marine components
The main engine, also known as the main engine, is the heart of a ship and an important part of its power equipment. Marine bearings mainly include:
(1) Ship's 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. Nowadays, the main engine of commercial ships is marine diesel engines, followed by steam turbines.
(2) Transmission device.
The equipment that transfers the power of the main engine to the thruster not only transmits power, but also plays a role in deceleration and shock absorption. Ships can use transmission equipment to change the direction of rotation of the thruster. The transmission equipment varies slightly depending on the type of host, generally consisting of reducers, clutches, couplings, thrust bearings, ship shafts, etc.
(3) Shaft and thruster.
In ship propellers, propellers are widely used, often using fixed or adjustable pitch propellers; The ship shaft system is a device that transmits the power emitted by the main engine to the propeller. The main engine of the ship drives the propeller to rotate and generate thrust through the transmission device and shaft system, overcoming the resistance of the hull and causing the ship to move forward or backward.
The mismatch between the development of shipbuilding auxiliary industry and shipbuilding industry has been a serious problem that has existed in China's shipbuilding industry for many years, seriously restricting the healthy development and growth of the shipbuilding industry. The loading rate of domestic equipment on Chinese export ships is usually around 50%, but in reality it is not that high. An industry insider told reporters that many shipyards have a domestic equipment assistance rate of around 20% for building export ships because overseas shipowners have designated the use of imported equipment and lack confidence in Chinese equipment.
Tapered roller bearings include conical inner and outer raceways, with tapered rollers arranged between them. The projection lines of all conical surfaces converge at the same point on the bearing axis. This design makes tapered roller bearings particularly suitable for bearing composite (radial and axial) loads. The axial load capacity of bearings is mostly determined by the contact angle α Decision. α The larger the angle, the higher the axial load capacity. Calculate the coefficient e to represent the magnitude of the angle; The larger the e-value, the greater the contact angle, and the greater the applicability of the bearing to withstand axial loads.
