The largest adjustable pitch rudder propeller propulsion system developed by Nanjing Gaojing has passed the appraisal.

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.

Perforated Metal Mesh

Perforated Metal Mesh, (also named Perforated Sheet, Perforated Metal) refers to the metal sheet products with various different holes on the surface. There are many kinds of punching wire mesh products. Different shapes, different sizes of holes, can adapt to different needs.

Material: Stainless steel, low carbon steel plate, galvanized, PVC, cold rolled coil, etc.

The types: pattern perforated sheet, forming perforated plate, extra thick punching net, ultra thin punching mesh, micro porous perforated sheet metal, wire cutting punching net, Laser punching net, etc.

Shape of Hole: Rectangular hole, square hole, diamond hole, round hole, hexagonal hole, cross hole, triangle hole, long round hole, long waist hole, plum blossom hole, fish scale hole, pattern hole, five pointed hole, irregular hole, bulge hole, etc.

Use: Sound-absorbing materials for ceilings and wall of buildings; Exquisite decorative board for building staircase, balcony, environmental protection desk and chair; Machinery and equipment protection cover, grille gorgeous, food, feed, mine mill sieve, sieve screen, I-beam, stainless steel kitchen equipment, food cover, blue fruit and other kitchen utensils, and shopping malls with shelves, exhibition decoration, ventilation network for grain depot, football turf seepage water filter and so on.

Size: 1.Thickness of coil: 0.2mm-1mm; Length: 20m

2. Diameter of hole: 1.5mm-10mm

3. Thickness of plate: 0.2mm-20mm;Width*Lengthâ‰¤1.5m*5m

4. Diameter of hole: 0.5mm-200mm

Hole diameter:

Generally speaking, the aperture size is approximately greater than or equal to the thickness of the plate, which is in accordance with the principle of minimum pore diameter. The closer the diameter of the hole to the thickness of the sheet, the greater the difficulty of processing and the higher the processing fee.. In some raw materials, the hole size can be less than the thickness of the plate.

Pitch

The pitch is the distance between the middle of a hole and the other one, the nearest hole in it. The middle distance is a way to represent the interval between holes, and the other is the rate of opening. The essential meaning of the two representations is the same. So you just need to identify one of them.
Arrangement of holes: (detailed picture explanation)
We can make all kinds of difficult passes and patterns. Although special requirements for pass and pattern require a specified processing fee, the quotation for the usual pass is quite reasonable.

(1) 60 degree staggered row
60 degree staggered row is one of the most popular choices with its natural high strength and wide aperture ratio and attractive appearance
(2) 45 degree staggered row

Compared with the former, the 45 degree plum blossom provides another choice for people.
(3) Straight Row

Another kind of round hole placement is straight row, straight row can also have a variety of holes and opening rate, but it is the hole in the series of the worst compressive strength.

Structure:

Perforated Metal Mesh,Perforated Metal Aluminum Mesh,Stretched Perforated Metal Mesh,Stainless Steel Perforated Metal Mesh

Anping Xinzheng Metal Wire Mesh Co., Ltd , https://www.sievingmesh.com