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Expansion Joints

Distinct from conventional expansion joints, the Bachmann GTEJ range incorporates unique design features to combat the thermal extremes faced while operating at high exhaust temperatures. All welded components are of same material with identical thermal growth coefficients designed for typical operating temperatures of 450°C to 680°C to eliminate the potential for damaging stress.Stainless steel liners are of a bolted construction with slotted holes to allow full thermal differential expansion.

Hot gas flow path to belt element is prevented by a pinned Dome Seal arrangement, which follows the frame’s thermal movement and allows the insulating material to fully expand after compression eliminating ‘hot spots’ on the fabric belt. ‘Channel clamp fixing’ system of belts enables to prevent gas leakage and it can handle both lateral and axial movements with very low spring force. A totally integral design requiring no cladding or welding at site.

Full range of non – metallic joints for compensating thermal expansion of ducts.The bachmann GTEJ range incorporatesunique design features to combat the thermal extream while opreating as:

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  • Designed for typical operating temperatures of 100°C to 1180°C
  • Totally integral design requiring no cladding/ welding at site
  • Light weight, easy field- spliced and repaired
  • Capable to withstand the system loads for heavy duty operations and long life
  • Dome Seal allows the insulating materials to fully expand after compression – eliminating “hot spots” on the fabric belt
  • Can handle both lateral and axial movements with very low spring force
  • Totally integral design requiring no cladding/ welding at site
  • Same thermal growth coefficients for adjacent components eliminate the potential for damaging stress

 

Some of Bachmann’s unique in-house designs are:

a)  Gas Turbine Expansion Joints – Patented designs for GT applications
b)  “Ductflex” Expansion Joints – Heavy duty non-metallic joints for temperature upto 1400 deg.C
c)  “Elastoflex” Expansion Joints – Single membrane expansion joints for low temperature.
d) “Ultraflex” Expansion Joints – High temperature range expansion joints for the utility industry.
e)Special Gaskets – for high temperature and GT applications.
f)Pipe-penetration Joints

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