Effective vibration isolation for a 14-ton ammonia compressor

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Walraven developed a tailored vibration isolation solution for a 14-ton ammonia compressor on behalf of a specialist contractor delivering installation solutions for industrial and production facilities. The project required a high-performance system capable of minimising vibration transmission while ensuring long-term operational stability.

Achieving maximum vibration isolation

The ammonia compressor had an operating weight of 14 tonnes and required an exceptionally high level of vibration isolation. Therefore, to achieve the target performance of approximately 98% vibration reduction, a spring-based isolation solution with a deflection value of up to 20 mm was required.

A key challenge was that the compressor’s centre of mass did not coincide with its geometric centre. This meant that the loads acting on each of the six fixing points varied, requiring detailed calculations to determine the correct support configuration.

Tailored spring isolation solution

Based on the calculated loads, Walraven engineers designed a bespoke vibration isolation system using six individually selected spring packages. Each spring assembly was chosen to match the specific load requirements at its fixing point, ensuring optimal performance and stability.

The spring-based solution delivers several important benefits:

  • Reduced wear and tear on the compressor by improving operating conditions.
  • Prevention of vibration transmission to the building structure and nearby installations.
  • Reduced stress on floor anchorings and supporting structures.
  • Enhanced long-term reliability of the installation.

Engineered for stability

Due to the slender design of the compressor and its relatively high centre of mass, additional stabilisation measures were required.

Therefore, alongside the spring isolation system, Walraven incorporated EPDM vibration isolators. These elements do not carry the equipment load but compensate for movement caused by the natural deflection of the spring foundation, helping to maintain stability during operation.

Delivering reliable vibration control

By combining detailed load analysis with a bespoke spring isolation design, Walraven delivered an effective solution for a challenging industrial application. The result is a stable and highly efficient vibration isolation system that protects both the ammonia compressor and the surrounding installation, while helping to ensure reliable long-term performance.