Sootblowers with long travel develop a considerable bending of the unilaterally attached lance tube and this increases to a disproportionately large extent with increasing travelling routes. Due to the rotation and/or oscillation of the lance tube this leads to excessive mechanical loading. Furthermore the distance to the heat exchanger packs decreases, an effect which neither the boiler manufacturer not the boiler operator want.
To solve this problem Clyde Bergemann has developed two alternative track adjustments:
- Droop correction in the track beam
- Droop correction by means of a shiftable face plate
By adjustment in the track beam as well as with the procedure of the shiftable face plate the lance tube is purposefully guided close to the optimum centre line. The marginal parameters of the droop control are individually and computer-assisted determined for each application.