Expansion Joint Selection and Safety Applications

Expansion Joint Selection and Safety Applications

During pipeline compensation design, the selection of expansion joints is closely related to the safe operation of the piping system.

Selection could not only lead to an increased overall cost for the piping system but may also result in the difficulty of fulfilling compensating functions, posing challenges.

A potential hazard has been identified in the safe operation of the system. For instance, if a non-restrained expansion joint is used in the curved section of the high-pressure pipeline system, due to pressure...

The force exerted by pushing leads to significant bending deformation in the pipe section, causing the corrugated tube to over-deform and fail: as the pressure builds up,

Strict piping requirements, manual addition of I-shaped bends, and three-chain compensation leading to excessive pressure drop: Use a single Qing chain

Flexible expansion joints are installed for compensation, yet they fail to achieve the intended compensation goals. The pipeline design begins right at the outset, concerning the direction and layout of the pipeline.

While designing the support system (including fixed brackets, guide brackets, etc.), it is essential to concurrently consider the selection of expansion joints.

Ensure design rationality, safety, reliability, and economy for the pipeline network through proper configuration.

This section will discuss the usage requirements for both unrestricted and restricted expansion joints, as well as the selection criteria for typical independent pipe section expansion joints.

Contents including types, arrangements, and load calculations for pipe supports.

7.1.2 Sectioning of the pipeline

When selecting expansion joints to absorb the thermal expansion of pipes, it is first necessary to determine the position of the fixed pipe supports.

Any complex pipeline can be divided into simple, independent, expanded pipeline sections by setting fixed pipe supports.

(Tubes such as straight tubes, L-shaped tubes, 7-shaped tubes, etc.), followed by compensation design.

The primary factors to consider when determining the quantity and location of fixed pipe supports are: the direction of the piping system, and one

A group of expansion joints' ability to absorb thermal expansion, suitable locations for fixed pipe supports, and associated equipment.

The position.

Due to the poor torque transmission and torsion absorption capabilities of bellows and expansion joint components, in the setup of fixed pipe supports

When installing expansion joints, it is advisable to avoid having more than two flat sections composed of independent pipes to prevent twisting loads.

On the expansion joint.