Device Overview

The BSD type compartment sealing device is a specialized equipment used for ship compartment sealing. It plays a key role in ensuring effective isolation between different compartments at positions where the ship's shaft system, pipelines, etc. pass through the compartment walls. This device is mainly used to prevent the leakage of fluids such as seawater and oil between compartments, ensuring the safety and normal operation of ships.

Structural composition characteristics

Sealing components:

The sealing component of the BSD type compartment sealing device is its core part. It usually adopts a multi-layer sealing structure, which may include high-performance rubber seals, sealing rings made of wear-resistant materials, etc. The design and material selection of these seals can adapt to various working conditions during ship operation, such as shaft rotation, different pressure and temperature environments, etc. For example, its rubber seals have good elasticity and resistance to seawater corrosion. When the shaft rotates through the bulkhead, they can tightly adhere to the shaft and bulkhead, effectively preventing fluid from passing through.

Compression device:

The device is equipped with a specialized clamping device, which is usually a gland structure connected by bolts. The gland can apply appropriate pressure to the sealing component to ensure tight contact between the seal and the shaft and bulkhead. This clamping force can be adjusted according to the actual situation. For example, in the early stage of installation, the clamping force can be appropriately increased to make the seal better adapt to the shape of the shaft and bulkhead, and then fine tuned according to the sealing effect and the operating status of the shaft.

Lining components:

The liner is the part of the BSD type compartment sealing device that directly contacts the shaft and serves to support and guide the shaft. The lining material is mostly an alloy with good wear resistance and corrosion resistance, such as bronze alloy. This type of bushing can reduce the wear of the shaft during rotation and can withstand certain axial and radial forces, ensuring the stable operation of the shaft.

working principle

After the shaft or pipe passes through the bulkhead and the BSD type compartment sealing device is installed, the sealing component is tightly fitted between the shaft (or pipe) and the bulkhead under the action of the compression device. During the rotation of the shaft, the rubber seals of the sealing components will undergo certain elastic deformation and always maintain sealing contact with the shaft and the cabin wall. For example, in the propulsion system of a ship, when the stern shaft passes through the bulkhead, the sealing device can use the elasticity and compression force of the seal to prevent seawater from entering other compartments from the stern compartment while the stern shaft rotates. At the same time, the liner provides support and guidance for the stern shaft, allowing it to rotate smoothly and reducing the adverse effects on the sealing effect caused by shaft shaking.

advantage

Excellent sealing performance: The BSD type compartment sealing device, with its precision designed sealing components and adjustable clamping device, can achieve excellent sealing in various complex ship operating conditions. Whether in static or dynamic (axis rotation) situations, it can effectively prevent the leakage of liquids and gases, greatly improving the sealing of ship compartments.

Good adaptability: This device can adapt to shafts and pipes of different diameters. By adjusting the clamping force and sealing component configuration, it can meet the sealing requirements of various ship equipment compartments. Moreover, it has good sealing effect on different fluid media such as seawater, fuel, lubricating oil, etc.

Durability and reliability: Due to the use of high-quality materials to make sealing components and liners, the BSD type compartment sealing device has high durability. Its strong wear resistance and corrosion resistance enable it to work reliably for a long time in harsh environments on ships, reducing the trouble of frequent replacement of sealing devices and lowering the maintenance cost of ships.

Disadvantages and countermeasures

High installation requirements: The structure of the BSD type compartment sealing device is relatively complex, and the installation process needs to be strictly carried out in accordance with the operating procedures. Improper installation may result in poor sealing performance. The response measure is to strengthen the training of installation personnel, ensure that they are familiar with the installation process and requirements of the device, and use appropriate tools and testing equipment during the installation process to ensure installation accuracy.

High initial cost: Compared to some simple compartment sealing devices, the design and material cost of the BSD type make its price relatively high. However, considering its long-term reliability and excellent sealing performance, from the perspective of the full life cycle cost of ships, its cost-effectiveness is still relatively high. In addition, procurement costs can also be reduced to a certain extent through bulk purchasing and other methods.

application area

Ship propulsion system: At the position where the stern shaft of the ship passes through the bulkhead, the BSD type compartment sealing device is an ideal choice. It can provide reliable sealing for the stern shaft, prevent seawater from entering important compartments such as the engine room, and ensure the normal operation of the ship's power system.

Ship piping system: For various liquid and gas pipelines on the ship, such as fuel pipes, fresh water pipes, ventilation pipes, etc. that pass through the cabin walls, this device can also play a good sealing role, ensuring the safe isolation of pipelines between different compartments.