Shipbuilding
Seals play a vital role in the shipbuilding industry and are widely used in ship power systems, cabin sealing, pipeline connections, etc.
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Marine power system
Engine: The cylinder gasket used between the cylinder block and the cylinder head of the marine engine is used as a seal. It is usually made of materials such as metal and asbestos. It can withstand high temperature and high pressure, prevent gas leakage, and ensure the power output of the engine. At the same time, the crankcase oil seal is used to seal the gap between the crankshaft and the crankcase to prevent oil leakage, avoid problems such as poor lubrication and environmental pollution caused by oil leakage.
Transmission system: In the gearbox, transmission shaft and other transmission parts of the ship, seals play a role in preventing lubricating oil leakage and the intrusion of seawater and impurities from the outside. For example, the shaft seal of the gearbox often uses a mechanical seal or a lip seal to ensure that the lubricating oil inside the gearbox is maintained at a normal liquid level, maintain good lubrication and heat dissipation effects, and ensure the normal operation of the transmission system.
Ship cabin seal
Hatch door seal: Each layer of the ship's hatch doors need to be well sealed to prevent the intrusion of seawater, wind and rain, and ensure the dryness and safety of the cabin. Hatch door seals usually use rubber sealing strips, which have good elasticity and weather resistance. They can fit tightly against the door frame when the hatch is closed to form a reliable seal, and can also play a role in sound insulation and shock absorption.
Sealing between cabins: In order to ensure that the cabins can be effectively isolated in case of damage or fire, the partition walls and ceilings between cabins need to be sealed with sealing materials, such as fireproof sealants and sealing gaskets. These seals can prevent the spread of flames, smoke and seawater for a certain period of time, providing protection for personnel evacuation and ship safety.
Deck seal: Various openings on the ship's deck, such as cargo hatches, vents, manholes, etc., require seals to prevent seawater from entering the cabin. The cargo hatch usually uses rubber sealing strips or gaskets, which are tightly fitted to the hatch edge through a clamping device to form a seal to ensure that the cargo hold is not soaked by seawater during navigation.
Ship Pipeline System
Fuel Pipeline: The sealing of fuel pipeline is very important. Preventing fuel leakage is not only related to the power supply of the ship, but also involves safety and environmental protection issues. Metal gaskets, O-rings and other seals are often used at the pipeline connection to ensure that there is no leakage of fuel during the transportation process and to ensure the stable operation of the fuel system.
Seawater Cooling Pipeline: Seawater cooling pipeline is used to provide cooling water for the ship's engines, generators and other equipment. Since seawater is corrosive, the corrosion resistance of the seals is required to be high. Generally, corrosion-resistant rubber seals or polytetrafluoroethylene seals are used to seal the flange connections, elbow connections and other parts of the pipeline to prevent seawater leakage and ensure the normal operation of the cooling system.
Compressed air pipeline: The compressed air system on the ship is used to start the engine, control valves, etc. The sealing of the pipeline directly affects the pressure and performance of the system. Compressed air pipelines usually use metal sealing gaskets or elastic sealing materials to form a seal at the pipeline connection to prevent compressed air leakage and ensure that the system can provide sufficient pressure and flow.
Other applications
Marine valves: Sealing parts are required between the valve stem and valve body of marine valves, and at the inlet and outlet connections of valves. For example, gate valves, ball valves, butterfly valves, etc. often use packing seals, O-ring seals, etc. to ensure that the valves can be effectively sealed in both the open and closed states, prevent medium leakage, and achieve accurate control of various fluid systems of ships.
Ship propellers: The connection between the shaft and the hull of the ship propeller needs to be sealed to prevent seawater from entering the hull, and at the same time ensure that the lubricating oil does not leak into the seawater. Usually water-lubricated seals or oil-lubricated seals are used. These seals are composed of a variety of seals, such as sealing rings, sealing rings, etc., which can adapt to different working conditions during the navigation of the ship to ensure the normal operation of the propeller.
D Eleven supply standard and customized seals for shipbuilding industry. Include as below:
For more information, contact our expert technical team.
Call+8613504978509 or email info@d-eleven.cn
