The Function and Selection of Bellow Type Mechanical Seals

The Role of Bellow Type Mechanical Seal

Bellows are pipes used to transport various fluids. They are characterized by having a certain waveform elasticity, which can absorb pipeline vibrations and thermal expansions, thereby ensuring the normal operation of the pipeline system. Bellow type mechanical seals are key components that ensure the connection of the bellows does not leak water or gas. Their main functions are as follows:

Sealing

Bellow type mechanical seals ensure that the pipe connection does not leak water or gas, thereby ensuring the normal operation of the pipeline system.

Shock Absorption

Bellow type mechanical seals have a certain elasticity, which can absorb deformations caused by pipe vibrations and thermal expansions, thus reducing damage to the pipeline system.

Protection

Bellow type mechanical seals effectively protect the connection of the bellows from external contaminants, extending their service life.

Selection of Bellow Type Mechanical Seals

Choosing the appropriate bellow ytpe mechanical seal ensures the normal operation and safety of the pipeline system. Here are some common factors to consider when selecting bellow type mechanical seals:

Material

The material of the bellow type mechanical seal varies depending on the liquid or gas medium. Generally, rubber, silicone rubber, fluororubber, polytetrafluoroethylene, and other corrosion-resistant materials can be chosen.

Size

When purchasing bellow type mechanical seals, it is important to match them with the caliber, length, and other parameters of the bellows, ensuring they fit within the allowable tolerance range.

Hardness

The hardness of the bellow type mechanical seal should be selected based on the working pressure and temperature. Generally, the higher the hardness, the greater the pressure it can withstand.

Temperature Resistance

The temperature resistance of the bellow type mechanical seal should be chosen based on the temperature of the working medium, with a certain temperature margin left.

Sealing Performance

The sealing performance of the bellow type mechanical seal is a factor to focus on during selection. The sealing grade is usually determined based on the working requirements of the bellows system.

Faults and Repair Methods of Bellow Type Mechanical Seals

Bellow type mechanical seals may become aged or damaged after long-term use, leading to water or gas leaks at the bellows connection. At this time, the bellow type mechanical seal should be replaced promptly to avoid accidents.

For some small bellows systems, simple repair methods such as using sealant or tape can be used to solve the problem. However, for some large bellows systems, the repair difficulty is greater. It is recommended to seek professional technical personnel for replacement and repair.

Bellow type mechanical seals are important components for ensuring the normal operation of pipeline systems. Their selection and use should be based on specific working conditions. Regular inspection and replacement of bellow type mechanical seals can avoid accidents in the pipeline system and extend its service life.