ABB HT611036 User Manual

Operation Manual / A150-M56/66/57/67 - A155-M..
7 Periodic maintenance work / 7.3 Cleaning the turbine during opera-
tion
© Copyright 2021 ABB. All rights reserved. HZTL4032_EN Rev.Q January 2021
7.3.5 Prerequisites
Two different turbine cleaning devices are available for turbochargers with single-inlet tur-
bine casing:
Fig.29: Turbine cleaning devices
1. Device consisting of one cleaning nozzle per turbine casing gas inlet.
2. Device consisting of six cleaning nozzles with connecting pipe for water and scavenging
air.
Characteristic/component Conditions
Cleaning device one cleaning nozzle per
gas inlet
six cleaning nozzles
Engine load (guideline value) 20…40%
1
) Turbine inlet temperature T
TE
before
water injection
350…430°C
Stabilisation phase after T
TE
has been
reached
10minutes
Stabilisation phase after turbine clean-
ing
10minutes
Water supply ensured
Water temperature 5…30°C
Water pressure (overpressure compared
to atmosphere) p
WT
1.5bar 2.5bar
2
) External air supply recommended recommended
External air pressure p
PA
relative to tur-
bine inlet pressure P
TE
P
PA
= P
TE
+ 0.5bar P
PA
= P
TE
+ 1bar
Table14: Turbine wet cleaning, recommended operating state
1
) The temperature at the turbine inlet can be up to 100°C higher than the exhaust gas tem-
perature after the cylinder. This must be taken into account when setting the operating
point before cleaning.
If necessary, the engine performance must be reduced to meet these conditions. The clean-
ing cycle can be started when the above conditions are fulfilled.
2
) External air supply for continuous blowing off of the cleaning nozzles between cleaning in-
tervals.
Page 64 / 194

ABB HT611036 Specifications

General

Brand	ABB
Model	HT611036
Category	Industrial Equipment
Language	English