Recently, the largest adjustable pitch rudder propeller propulsion system (Model: NRP550) independently developed by Nanjing Gaojing Marine Equipment Co., Ltd., a subsidiary of NGC Group, successfully passed the new product appraisal and appraisal committee organized by Jiangsu Provincial Economic and Information Commission. Experts agree that the technical indicators and structure of the product have reached domestic leading and international advanced level.
The NRP550 adjustable pitch rudder propulsion system independently developed by Nanjing Gaojing Marine has a rated power of 4,000 kW, a propeller diameter of 3,500 mm and a maximum input torque of 52,525 Nm. It is the largest rudder propulsion system with the largest domestic power and propeller diameter, and the pitch of the blade. It is adjustable, enabling the main engine to drive the shaft or fire pump in constant speed mode, improve the overall utilization of the main engine, reduce the energy consumption and construction cost of the whole ship, save the ship space and increase the handling performance of the whole ship.
It is reported that the product adopts a side inclined propeller and a high-efficiency draft tube to check the bubble of the blade, reduce the influence of the bubble on the blade, and improve the life of the blade; the rudder angle feedback device, the manual slewing mechanism and Modular design of oil draining tools, easy to realize interchangeable maintenance of parts; spiral bevel gear adopts Klingen Bell gear system, which has stronger carrying capacity and more stable transmission; remote control system based on PLC can realize follow-up control and standby Control function, with good reliability, easy operation and expandability; using a new built-in disc pitch feedback mechanism and advanced hydraulic system, the adjustable rudder propeller has system stability, low energy consumption, pitch adjustment and steering accuracy Higher advantage.
The product integrates the propulsion function, the rudder function and the distance adjustment function. It can realize special driving operations such as ship's in-situ rotation, lateral movement, rapid retreat and steering in low speed range, and the shaft or fire pump on the ship can be directly connected. To the propulsion mainframe, there is no need to add a main engine with a shaft or fire pump.
This product is widely used in special ships and offshore industries, such as tugs, top wheels, floating cranes, semi-submersible offshore platforms, wind power service vessels, semi-submersible vessels, dredgers, ferries, and working punts. Wait.
At present, Nanjing NGC rudder propeller series has obtained 23 patents, including 5 invention patents, and has received more than 200 orders. It is estimated that more than 80 new orders will be placed this year.
According to the characteristics of molding, injection mold and thermoplastic plastic mold are divided into two types. According to the molding process, it can be divided into transfer mold, blow mold, casting mold, hot molding mold, hot pressing mold (compression mold), injection mold, etc. Among them, the hot pressing mold can be divided into three types, i.e., overflow, semi-overflow and non-overflow, and the injection mold can be divided into two types, i.e., cold runner mold and hot runner mold. It can be divided into two types: mobile type and fixed type.
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