NGC's NRP250 fixed-pitch rudder propeller was identified as the first in Jiangsu Province (...

Recently, Nanjing High Precision Marine Equipment Co., Ltd. NRP250 fixed pitch rudder propeller has been identified as the first (set) of major equipment in Jiangsu Province after being evaluated by relevant departments. This shows that Nanjing Gaojing Marine has obtained independent research on rudder propellers for many years. Comprehensive recognition of technology and market. The first (set) major equipment and key components project of Jiangsu Province was established by Jiangsu Provincial Economic and Information Commission to encourage the development of high-tech equipment, large-scale complete sets of equipment and key components independently developed by high-end manufacturing.
The National Twelfth Five-Year Plan for Marine Economic Development puts forward the country's development expectations for the marine shipbuilding industry and marine engineering equipment manufacturing industry. High-performance marine survey vessels, special engineering vessels, luxury passenger rolling vessels and offshore platforms are all included in key research and development directions. Such ships and equipment generally have special requirements for flexibility and maneuverability, and a considerable number of such ships are equipped with rudder propellers. As a new type of ship propulsion system, the rudder propeller is a key accessory product for marine power plants. The NRP250 fixed-pitch rudder propeller has a rated power of 1765 kW, a blade diameter of 2400 mm, a maximum load capacity of 2,200 kW, and a maximum input torque of 25,467 Nm. The product has received a large number of orders after the successful development, and has been well received by customers.
The review panel agreed that the device uses Klingen Bell-toothed spiral bevel gears for greater load carrying capacity and smoother transmission; modular design techniques for rudder angle feedback, manual slewing, oil drain and hydraulic systems Modular design, modular configuration of rudder propeller parts, easy interchangeability of parts; advanced heat treatment methods and processing techniques to ensure the mechanical properties of key components such as spiral bevel gears and drive shafts; Using the advanced hydrodynamic calculation method, the matching design of the machine-paddle-ship system and the optimization design of the propulsion system improve the design accuracy and propulsion efficiency, and effectively suppress the vibration and cavitation generated by the propeller. The device has obtained 7 national utility model patents, and the technical level of the whole machine has reached the domestic leading position.
Nanjing Gaojing Marine Equipment Co., Ltd. is a wholly-owned subsidiary of China High Speed ​​Transmission Equipment Group. It can provide a variety of transmission and propulsion equipment after the prime mover, including adjustable paddles, fixed pitch propellers, rudder propellers, side thrusters, various marine applications. Main/auxiliary gearboxes and various axle rudder components and deck machinery.

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