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Operation Manual / TPL67-C.. - TPL71-C..
8 Disassembly and assembly / 8.8 Dismantling and fitting nozzle ring
at turbine end
1) If provided
Segment connection
Checking
Flange connection
© Copyright 2020 . All rights reserved.
Qualitative requirements for the nozzle ring area in HFO operation
¡
Coverage of one or more nozzle ring blade pitches by more than 50%
respectively is not permitted.
¡
The surface reduction of the nozzle ring due to contamination may
be no more than 15%.
Assembly
Carefully clean grooves and contact surfaces in / on casing and keep
u
free from metal chips.
Keep grooves and spiral-wound gasket free from oil and grease.
u
Fix a new spiral-wound gasket (61050) using a little instant adhesive
u
(for example "Loctite 454 gel") applied at three equally spaced points
in groove.
Fit nozzle ring to gas inlet casing and fix it.
u
Fit gas inlet casing.
u
Use guide studs (90320) as a centering aid and remove them after-
u
wards.
Brush screw threads (61044) with high temperature grease.
u
Position segments (51012) using screws (61044).
u
Make sure that collars (C) of segments (51012) rest in groove (S).
Position screws (61044).
u
HZTL2488_EN
Rev.G
March 2020
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