EXHAUST EXPANSION JOINTS

Exhaust expansion joints are designed to absorb heat induced expansion and contraction of pipe systems and exhaust systems.
Belman has developed a wide range of exhaust expansion joints, which are designed to give high movement absorption with low
spring rates for best overall performance.
The typical pressure rating for exhaust expansion joints, temperature depending is 1.0 BarG.

DIMENSIONS

Belman designs and manufactures a wide range of exhaust expansion joints.

Customised solutions
As customised solutions joints exhaust expansion joints are available in all sizes up to DN 12.000, all designs and all materials.

Standard solutions
As standard solutions exhaust expansion joints are available in size range DN 50 – 2200.

EXHAUST EXPANSION JOINT TYPES

EXHAUST
with loose flanges

US1BU / ID no. 11
DN 50 – 2200
PN 1
Download (PDF)

EXHAUST
with welding ends

US1SU / ID no. 13
DN 50 – 2200
PN 1
Download (PDF)

Belman bellows UN2BU
EXHAUST
with loose flanges

US2BU / ID no. 21
DN 50 – 2200
PN 1
Download (PDF)

Belman UN2SU compensators
EXHAUST
with welding ends

US2SU / ID no. 23
DN 50 – 2200
PN 1
Download (PDF)

Belman US3BU expansion bellows
EXHAUST
with loose flanges

US3BU / ID no. 31
DN 50 – 2200
PN 1
Download (PDF)

Belman US3SU expansion bellows
EXHAUST
with welding ends

US3SU / ID no. 33
DN 50 – 2200
PN 1
Download (PDF)

Expansion joint

CATALOGUE

Comprehensive technical data and selection criteria for +3500 standard metallic expansion joints.

CUSTOMISED EXHAUST EXPANSION JOINTS

INCOLOY BELLOWS

Engine's exhaust, Holland

WARSHIP

Engine, France

INCOLOY BELLOWS

Engine's exhaust, Holland

WARSHIP

Engine, France

SPECIAL DESIGN

Gen-set manufacturer, Germany

OIL TANKER

Exhaust, Scotland

SPECIAL DESIGN

Gen-set manufacturer, Germany

OIL TANKER

Exhaust, Scotland

TECHNICAL DESCRIPTION

Belman exhaust expansion joints are available with many end fitting options including welding ends, flanges (welded and loose). For smaller sizes, it is often possible to slide the bellows tangent over the exhaust pipe and secure using band clamps or worm-drive clips. Exhaust expansion joints can absorb axial and lateral movements alone or in combination, and it is usually the required movement capacity which determines the selected configuration.
A single bellow is normally selected to accept mainly axial movement although some lateral movement is usually possible. Where the amount of axial movement is outside of the capacity of a single bellows, a double expansion joint may be necessary. When the unit is required to accept a significant amount of lateral movement, including applications where axial movement is applied simultaneously, a double bellows is usually the preferred option.

A double bellows unit has a intermediate pipe between the bellows and sometimes this is an integral part of the bellows tube reducing the need for welded joints.

Exhaust expansion joints from Belman are designed to be as light as practically possible to give minimum loads on hangers and pipe supports. Further, the bellows technology, often incorporates multi layers, giving maximum movement and flexibility (for minimum deflection forces and good fatigue properties) with good performance in conditions where vibration prevails. Exhaust expansion joints are generally unrestrained so the pressure force (generated by the bellows when pressurised), together with the deflection forces resulting from movement, must be contained by the system fix points and guides.

At high temperatures or where the flow velocity is high, Belman always recommends an inner sleeve in the bellows. The inner sleeve protects the bellows against abrasion from any particulate matter in the flow medium and helps to smooth the gas flow over the convolutions which helps in the reduction of turbulence. It can also help to reduce the temperature of the bellows in the expansion joint.

APPLICATION

Exhaust expansion joints are used in a wide range of applications including gas turbine exhausts, power units, generator sets, marine propulsion systems, OEM engines and auxiliary systems.

Customised expansion joints can be designed and built for any specific requirement and application.

ADVANTAGES & REQUIREMENTS

Advantages

  • Gas-tight and resistant to corrosion and temperature
  • Absorb vibrations and oscillations
  • Light weight, reducing loads on hangers and pipe supports
  • Very low spring rates, and high flexible performance reduces loads on hangers and pipe supports
  • Economical

 

Requirements

  • High flow velocity often requires an inner sleeves
  • Exhaust bellows exposed to vibration should be designed to ensure that the natural frequency and any harmonics do not coincide with the frequencies of the exhaust system.
Our experience, your benefit
CUSTOMISED
EXPANSION JOINTS!
If the required/specified expansion joint is not found in our standard product range, please do not hesitate to forward your specifications to us. We are specialised in designing and manufacturing of cost-efficient customised solutions.
Alternative applications
EXPANSION JOINTS
FOR SHIPS
Belman designs and manufactures a broad range of customised expansion joint solutions for ship applications
such as:
  • Submarines
  • War ships
  • Scrubber systems
  • LNG/LPG carriers
  • Cruise liners
Alternative applications
EXPANSION JOINTS
FOR SHIPS
Belman designs and manufactures a broad range of customised expansion joint solutions for ship applications
such as:
  • Submarines
  • War ships
  • Scrubber systems
  • LNG/LPG carriers
  • Cruise liners
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