HELS relies on highly developed metal bellows expansion joints that are optimized for extreme temperatures and pressures in diesel engines. These expansion joints not only absorb thermal expansion, but also act as effective vibration dampers to prevent material fatigue. Thanks to precise manufacturing and state-of-the-art technologies, they offer outstanding reliability and durability. As a result, unplanned downtimes can be reduced and maintenance costs lowered.

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Active vibration expansion joints for machines

Diesel engines generate considerable vibrations due to high combustion pressures and mechanical dynamics, which can lead to structural damage and loss of performance. HELS vibration expansion joints are specially designed to minimize these stresses and ensure optimum operational reliability. By effectively absorbing axial, lateral and angular movements, they reduce mechanical stresses on piping and motor components. This leads to an extended service life of the systems and increased efficiency in demanding applications.

Advantage of HELS vibration expansion joints

A decisive advantage of HELS vibration expansion joints is their innovative design, which enables optimum adaptation to specific industrial requirements. The flexible yet highly resilient components ensure excellent vibration isolation and minimize the transmission of unwanted forces to the overall system. This results in improved operational safety and efficient protection of the connected infrastructure. HELS combines decades of experience with continuous technological development to deliver products that meet the highest standards.

Adaptive vibration expansion joints

With a global sales network and a strong focus on quality management, HELS offers its customers not only first-class products, but also sound technical advice and customized solutions. Manufacturing to international standards ensures that the vibration expansion joints can withstand even the toughest operating conditions. Through continuous investment in research and development, HELS drives innovation in the industry. Rely on HELS to sustainably optimize the efficiency and durability of your diesel engine applications.

Vibration expansion joints for pipelines: Protection and durability

Vibration expansion joints are essential in industrial piping systems to effectively minimize mechanical stresses and vibrations. HELS develops high-performance solutions that compensate for thermal expansion and pressure fluctuations to prevent damage to pipelines and adjacent components. The flexible designs ensure a secure connection between different sections of the system and reduce the stress caused by dynamic movements. This not only extends the service life of the pipelines, but also significantly increases operational safety.

Another advantage of HELS vibration expansion joints is their ability to dampen sound and vibration transmission within the piping system. This helps to reduce noise levels in industrial plants and improves working conditions for personnel. Thanks to high-quality materials and precise manufacturing processes, these components offer excellent resistance to high temperatures, aggressive media and mechanical stress. HELS relies on state-of-the-art technologies to equip piping systems worldwide with durable and high-performance vibration absorbers.

More expansion joints from HELS

Metallic axial expansion joints

With an inner sleeve made of AISI 304/321, welded connections on both sides, pressure rating PN16 and a temperature resistance of -80 to +427 °C, the butt-welded metal-axial expansion joint offers reliable performance even under extreme conditions.

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Rectangular Expansion Joints

HELS offers high-quality angular expansion joints made of robust stainless steel. They compensate for angular movements in piping systems and thus protect the connections. Customized solutions adapt flexibly.

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Rubber expansion joints

Rubber expansion joints can withstand up to 16 bar, are robust and durable. They are pivot-mounted and do not require any additional seals.

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LET US ANSWER THE FREQUENTLY ASKED QUESTIONS

Which materials are best suited for vibration expansion joints in high-temperature applications?

High-temperature applications require heat-resistant materials such as stainless steel (e.g. AISI 321 or AISI 316L) or Inconel. These materials offer high corrosion resistance and durability under extreme conditions.

Why are metal bellows expansion joints particularly effective for vibration damping in piping systems?

Metal bellows expansion joints absorb axial, lateral and angular movements, reduce mechanical stresses and minimize the transmission of vibrations to connected systems. Their elastic structure ensures even load distribution and protects sensitive components.

How does the shaft thickness of a metal bellows influence the damping properties of a vibration expansion joints?

A thicker shaft increases the stiffness of the bellows and improves pressure resistance, but reduces flexibility and the ability to absorb vibrations. Thinner shafts offer better elasticity and higher damping properties, but are less pressure-resistant.

What standards and test methods apply to high-quality vibration expansion joints?

High-quality vibration expansion joints must be manufactured and tested in accordance with standards such as EN 14917, EJMA (Expansion Joint Manufacturers Association) and ASME B31.3. Test procedures include pressure tests, leakage tests and cyclic load tests to ensure durability and safety.

How does the design of a vibration expansion joints affect its service life?

The service life depends on the choice of material, the wall thickness, the shaft geometry and the number of movement cycles. An optimized design with reinforced bellows, protective sleeves or inner sleeves minimizes wear and significantly extends the service life.

HELS SPECIALIZES IN THE PRODUCTION OF HIGH-QUALITY STEAM TRAPS, EXPANSION JOINTS, LEVEL GAUGES, AND HOSE ASSEMBLIES. OUR PRODUCTS ARE ESSENTIAL FOR MULTIPLE INDUSTRIES.