Hinged chimneys

Challenge / Situation
Three stacks mounted on top of an industrial building must be laid down for technical safety reasons. The site requires that these emergency stacks exceed the height of the building as little as possible. However, in the event of an emergency, these stacks must be placed upright within three minutes to evacuate the cleaned exhaust gases of the Diesel engines. The requirements were clear.

• Lifting movement with simultaneous tilting movement
• Transmission of a force of about one ton
• Time specified for placing the stacks upright 3 minutes
• Compact design for outdoor use
  
  Resolution / The way forward
  A hinged mount provided the decisive advantage for this challenge. This tilt mount gave the worm gear screw jack NSE100-SL, combined with a clevis joint and driven by a motor, sufficient freedom of movement to perform the lifting and tilting move. The optimal design of the gear unit, with a one-meter stroke and a 10-ton force, allows raising the about four meter high and one ton heavy stacks in exactly 3 minutes. This ensures the emergency operation and the readiness of the three single stacks in the required time.
  
  • Gimbal mount
  • Worm gear screw jack provides accuracy and smooth operation of the tilting movement
  • Optimal design allows fine adjustment of the specified time
  • Compact drive technology design with worm gear screw jack
  
  
  
  
  
  
  
  «Nozag gave us the decisive tips when designing the drive construction. This support in the planning phase and the delivery of the optimal components finally led to a strong solution. We greatly appreciated this competence and experience. This contributed significantly to the success of the plant.»

  
  Plant management / Management, Tehag Engineering AG 
  
  
  
  
  Product / Detailed information
  Screw jacks , in non-rotating or rotating version, with many different end attachments such as clevis joints, ball joints, etc., are available from stock. These screw jacks are optimally suited for converting the rotary move of the drive motor into axial moves and thus generate a lifting movement. We will be glad to support you at any time to engineer, calculate and optimize your drive solutions.