Compound hinge transverse expansion joint

Product Introduction

        1. Product structure and principle

The double hinge transverse expansion joint consists of two angular bellows connected through an intermediate connection pipe, and is equipped with hinge plate, pin shaft, vertical plate and other structural parts. Its core design absorbs the lateral displacement in a single plane through the hinge structure, and at the same time uses the hinge and pin shaft to bear the thrust generated by the internal pressure of the pipeline to ensure the stability of the system.

         2. Performance characteristics

• Displacement absorption capacity: Specially used for absorbing single plane transverse displacement, especially suitable for transverse deflection deformation of pipeline due to thermal expansion and contraction or mechanical vibration.

• High pressure bearing: Wide range of working pressure (0.25-2.5 MPa), which can adapt to different working conditions.

• Modular design: Through the length adjustment of the intermediate pipe, it can adapt to different pipe spacing requirements, and has high flexibility.

• Durability: It adopts bellows and high-strength hinge components, which has excellent corrosion resistance and fatigue resistance.

        3. Technical parameters

        4. Fields of application

• Energy industry: Boiler pipeline of thermal power plant, cooling system of nuclear power plant.

• Chemicals and Petroleum: Reactor connection pipeline, oil pipeline compensation.

• Municipal Engineering: Seismic displacement compensation of heating pipe network and large building structure.

        5. Installation and use precautions

• Hinge Direction Alignment: When installing, it is necessary to ensure that the hinge rotation plane is consistent with the displacement direction to avoid stress concentration.

• Cold tightening treatment: For large displacement or high pressure scenarios, it is recommended to perform cold tightening operation (the cold tightening amount is 50% of the actual displacement) to improve stability.

• Tie rod removal: After installation, the small tie rod for transportation and fixation should be removed to prevent it from becoming a load-bearing component.

        sum up: The double-hinged transverse-type expansion joint is a key component in industrial pipeline systems thanks to its directional displacement compensation capability, high-pressure adaptability, and modular design. The specific selection should be combined with the comprehensive evaluation of pipe diameter, displacement and working pressure (please refer to more technical details).