In addition to high temperatures and pressures and potentially toxic or hazardous gases, exhaust systems are also exposed to large amounts of vibration. This movement is due to normal vibration and resonance from engines and changing gas pressures, as well as loose parts or brackets that allow components to move and rattle.
Vibrations have a compounding effect over time and cause parts to shift out of position and become worn. If the situation is allowed to continue the result can cause parts or the entire exhaust system to fail. In extreme situations, excessive vibrations may cause dangerous fumes to leak into the ambient atmosphere.
At Cenflex, we provide flexible exhaust connectors that can help reduce vibration and keep machinery running smoothly. Here, we’ll compare rigid and flexible exhaust connections and look at considerations for selecting the right connector for different applications.
Challenges with Rigid Exhaust Connections
Rigid exhaust connections are the default in many commercial and industrial equipment systems. Unfortunately, they have significant limitations that can lead to more frequent service disruptions, costlier maintenance, and greater damage to the up- and downstream equipment.
Some of the biggest challenges users experience with rigid exhaust connections are:
- Loud vibration. Rigid components start to shake and rattle if there are any loose connections or parts. This can contribute to noise pollution and make working environments unpleasant or dangerous if it impedes communication.
- Equipment failure. Parts that rattle and shake can become loose or fasteners to loosen over time. When critical parts become disconnected, the risk of exhaust system or engine damage increases.
- Mechanical wear. Vibrating components can cause adjacent components and fasteners to break or wear down. Over time this results in more involved repairs and part replacements.
- Thermal expansion. Metals expand slightly at high temperatures and contract at low temperatures. Rigid connections don’t facilitate this unavoidable movement, so mechanical stress builds up with repeated hot and cold cycles. Eventually, this can damage support structures, crack the connected pipes, and lead to leaks.
How Flexible Exhaust Connectors Solve Exhaust Challenges
Flexible connectors resolve these problems simply because they are more flexible than rigid ones. Because they can bend, flex, and move in multiple directions, flexible connectors are less prone to rattling and vibration. They also absorb shock and vibration better, which keeps neighboring components protected too. Installing flexible connections also reduces how much parts, screws, nuts, and brackets become loosened and worn due to vibrations and repeated contact with other components.
Flexible connectors also address thermal expansion because their design allows for lateral movement, compression, and extension as parts expand and contract, without putting tension on connected components.
Modern flexible exhaust connectors are often more durable than traditional rigid connectors. Many models are made from materials including stainless steel 204 and 316, which provide long-lasting function with less risk of corrosion and breakage. With proper maintenance and inspection, technicians can also mitigate clogs and buildup inside flexible connectors.
Selecting the Right Flexible Connector
Cenflex provides high-performance flexible exhaust connectors built for superior performance in both day-to-day use and in extreme applications. We offer these flexible connector options:
Bellows
A bellows, sometimes called an expansion joint, is accordion-shaped with deep, wide corrugations called convolutions that withstand high pressures. They can absorb axial thermal expansion and contraction as well as lateral movement and engine vibrations. Because they are shorter than flexible hoses, they have excellent mobility and expansion capacity and are more effective at absorbing vibrations.
Braided
Braided connectors consist of an inner corrugated metal hose covered with one or two layers of wire braid. The tube contains the exhaust and the braided exterior provides a protective, leak-resistant layer that can bend, wind, and expand or contract laterally without excess mechanical stress (although, it cannot extend or contract axially). The braided mesh prevents the inner hose from elongating under high pressures, and hose corrugations help to absorb vibrations in high-flow applications.
Corrugated Hose
Corrugated connectors have a similar format as bellows connectors; however, the folds in a corrugated connector are more shallow and may have less robust construction. These connectors are suited to exhaust systems with lower pressures, smaller vibrations, and less thermal expansion. They have limited axial expansion and contraction capacity. They may be a more cost-effective option compared to joint/bellows assemblies for certain applications.
Maximizing Reliability With Flexible Exhaust Connectors From Cenflex
Flexible exhaust system components create durable, long-lasting connections that help mitigate the noise, vibration, and mechanical wear associated with rigid connectors. Cenflex has over 30 years of experience helping industrial customers find the right flexible exhaust hardware for generators, HVACs, industrial processing equipment, and more. We engineer and reengineer custom solutions to optimize operations with precision solutions. Contact us today to tell us more about your requirements, or request a quote for pricing details.