Double hinge expansion joint for air-cooled island vacuum pipeline

Product Introduction

Product Structure and Composition

The double hinge expansion joint of air-cooled island vacuum pipeline is composed of a universal ring, two sets of hinge plates connected with the end pipe, a pin shaft and a bellows and other core components. Its unique design contains two pairs of mutually perpendicular hinge structures that are connected by pins to form a flexible compensation unit that can withstand the thrust generated by internal and external pressure of the pipeline.

     2. Functional characteristics

1. Multidirectional displacement compensation capability

• Angular displacement absorption: It can absorb the angular displacement of any plane, and is especially suitable for complex pipe systems with single plane or multi-directional lateral displacement.

• Thermal expansion and vibration mitigationThrough the elastic deformation of the bellows, the expansion and contraction of the pipe caused by temperature change and mechanical vibration can be effectively compensated, and the system stress can be reduced.

1. High pressure and vacuum adaptability

• The working pressure range covers vacuum to-0.1MPa, which is suitable for special working conditions such as air-cooled island vacuum pipeline.

1. Combination Application

• Usually, 2-3 groups are used in combination to enhance the synergistic compensation effect for multi-directional displacement and ensure the stability of the system.

• III. Technical parameters

• High strength design: The hinge plate and pin shaft adopt high load-bearing structure, which can bear internal pressure thrust and external load, and avoid pipeline deformation or leakage.

• Anti-corrosion and durability: The corrugated pipe is made of high-temperature and corrosion-resistant materials, and the surface is treated with anti-corrosion to prolong the service life.

• Installation flexibility: Suitable for a variety of pipe layouts, especially suitable for complex pipe systems with limited space.

• Typical Application Scenarios

• Power industry: Power plant air-cooled island vacuum pipe system for thermal displacement compensation of steam turbine exhaust pipe.

• Petrochemicals and Metallurgy: Catalytic cracking unit, high-temperature flue gas pipeline, etc., to balance pressure fluctuation and vibration.

• Other areas: Large-diameter media conveying pipelines for chemical, cement and other industries.

• Installation and maintenance

• It should be used with the guide bracket to ensure that the displacement direction is controllable;

• Regularly check the wear of hinge pin shaft and the fatigue state of bellows to avoid overpressure or overdisplacement operation.

Through the above design, the double hinge expansion joint of air-cooled island vacuum pipeline significantly improves the reliability and durability of pipeline system, and is an indispensable key compensation element in industrial complex pipeline system. For more technical details, please refer to other sources.