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Improvements of a Seal System
Örebro University, School of Science and Technology.
2014 (English)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesisAlternative title
Förbättringar av ett tätningssystem (Swedish)
Abstract [en]

The Company in which the thesis derives is specialized in designing and building plants for removal and management of hazardous materials.

To ensure a safe and environmental friendly disposal the plant needs to be secured to prevent harmful gases and particles to leak out to the surrounding air. For this purpose there are three locations in which inflatable seals are used to assure that the operation is done safely. Every location consists of a set of seals that are monitored to the extent that if a seal starts leaking they are refilled until they fail to maintain pressure. When this happens the production needs to be shut down and the leaking seal needs replacement. This costs both the company and their costumer’s money and in the long term affects the Company’s reliability.

To address the issue the company has done investigations to why pressure loss occurs. Adjustments have been made but seal failures still occur. This thesis is investigating the subject in order to find improvements. During inspection of failed seals a pattern were discovered where the seals had cuts along the sides and metal scrap left inside the cuts. Inspection of the grooves was therefore made and razor sharp edges were discovered throughout the grooves lower section. Simulations of the inflation confirmed that the location of the cut marks comes in contact with the edge inside the grooves. A number of concepts are then presented to address the issue towards a sustainable solution.

Place, publisher, year, edition, pages
2014. , p. 36
Keywords [en]
inflatable seals, seal systems, fault tree analysis
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:oru:diva-35464OAI: oai:DiVA.org:oru-35464DiVA, id: diva2:727872
Subject / course
Mechanical Engineering
Supervisors
Examiners
Available from: 2014-06-24 Created: 2014-06-23 Last updated: 2017-10-17Bibliographically approved

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