| Customization: | Available |
|---|---|
| After-sales Service: | 12 Months |
| Warranty: | 12 Months |
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| Model NO. |
Propeller |
| Transport Package |
Standard export packing |
| Specification |
Depends on customization |
| Trademark |
ZhenJiangJinYe Propeller |
| Origin |
Jiangsu,China, |
| HS Code |
84871000 |
| Production Capacity |
1000units\month\ |
| Other |
Can be customized |
| Classification Society | DNV\ABS\RS\RINA\BV\KR\BKI\CCS |
| Product name |
|
| Certification system | ISO9001\ISO14001\ISO45001 |
| Port of departure | Shanghai |
| Material | Ni-AI Bronze (Cu3) |
| Blades | Depends on Customization |
| Delivery time | Customization time two or three months |
The marine semi-submerged propeller, also known as the Surface Piercing Propeller (SPP), is a specialized propeller designed specifically for high-speed vessels. This type of propeller operates efficiently even when partially exposed above the waterline during high-speed navigation, hence its alternative names: partially submerged propeller or surface propeller. The unique design of the semi-submerged propeller offers numerous advantages over traditional propellers in high-speed applications.
No Cavitation Erosion: At high speeds, traditional propellers often suffer from cavitation erosion, but the semi-submerged propeller effectively avoids this issue by having part of its blades exposed to air, thereby extending its service life.
Reduced Drag: The hub, shaft, and hydraulic support accessories of the semi-submerged propeller are typically above the waterline, reducing the additional drag in the water and enhancing the vessel's navigational efficiency.
Shallow Draft: The design of the semi-submerged propeller optimizes the working point, freeing the vessel from the constraints imposed by the hull on the propeller diameter, facilitating navigation in shallow waters.
High Efficiency: The semi-submerged propeller system boasts high propulsive efficiency, making the vessel more energy-efficient during navigation.
Flexible Installation: The semi-submerged propeller's connection to the engine is flexible, facilitating maintenance and repairs while allowing for a more streamlined overall design of the hull.
Excellent Maneuverability: By adjusting the immersion depth and pitch angle of the propeller, vector propulsion can be achieved, providing greater stability, speed, and flexibility in vessel control.
The quality of semi-submerged propellers is crucial to the vessel's navigational performance and safety. During manufacturing, manufacturers conduct rigorous quality control over every component, particularly critical parts like the spherical components. These components support the propeller shaft to enable 360° rotation while also ensuring sealing. Their surface finish and roughness must meet stringent standards to ensure the optimal performance of the semi-submerged propeller.
Marine semi-submerged propellers are typically made from Ni-AI Bronze (Cu3) alloy. This alloy possesses exceptional mechanical properties, corrosion resistance, and fatigue strength. Proper heat treatment processes, such as annealing, normalizing, and solution aging, can further enhance the material's comprehensive performance. The use of Ni-AI Bronze alloy ensures the long-term stable operation of semi-submerged propellers in harsh marine environments.
Marine semi-submerged propellers not only improve the vessel's navigational efficiency but also offer significant environmental benefits. During maintenance and repairs, the semi-submerged propeller technology allows for operations without removing the vessel from the water, reducing maintenance time and costs while eliminating pollution to the marine environment caused by traditional maintenance methods. Additionally, the high efficiency of semi-submerged propellers reduces fuel consumption and carbon emissions, contributing to green shipping.
To ensure the long-term stable operation of semi-submerged propellers, regular inspections and maintenance are necessary. These inspections cover wear on the propeller blades, lubrication status of bearings, and the stability of the transmission system. Any issues identified should be promptly addressed to prevent minor problems from escalating into larger failures and losses.
The semi-submerged propeller propulsion system is widely used in various high-speed vessels, including high-speed planing craft, high-speed maritime patrol boats, high-speed customs and anti-smuggling boats, high-speed law enforcement and supervision boats, high-speed transport boats, high-speed racing boats, and high-speed yachts. These vessels rely on high-speed navigation and flexible maneuverability, and the application of semi-submerged propellers significantly enhances their performance.
In summary, marine semi-submerged propellers, with their unique design and superior performance, have found widespread application in the field of high-speed vessels. As technology continues to advance and the market expands, the application prospects for semi-submerged propellers will become even broader.
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