Marine Installation Manual
2021-08
4-52
4 Ancillary Systems
4.4 Fuel gas system
X72DF
4.4.6
On-engine integrated gas pressure regulation unit
The X-DF engine requires precise regulation of gas pressure with a timely re
-
sponse to changing load conditions. WinGD has developed the Integrated Gas
Pressure Regulation (iGPR) unit, which encompasses all performance and safety
requirements associated with the X-DF engine applications (see
).
Figure 4
-
32 Fuel gas supply system with the iGPR
The main functions of the iGPR include:
•
Gas pressure regulation
•
Gas flow measurement
•
Gas filtration
•
Leak test sequence
•
Purging with inert gas and venting
•
Fuel gas temperature monitoring
The iGPR is mounted on the engine and has the same installation principles as
applied to the fuel gas supply system which is located in the engine room.
Engine
Gas supply/pressure release
Air suction/release
Gas pipe
Annular space
Inert gas supply/release
Gas detector
Engine room ventilation
Engine room
Flanges engine side
Flanges system side
SM-0197
Exhaust side
Vent
valve
Vent
valve
Fuel side
Vent
valve
Pressure
regulating
valve
Shut-off
valves
(Double Block and Bleed)
Extraction
fan
Flow
meter
Gas
filter
Vent
valve
N
2
supply
Inert
valve
Vent
Air
suction
Gas
supply
Manual
shut-off
valve
Adjustable
orifice
Gas/Inert
gas
release
Engine room
ventilation fan
Vent
Air
supply
1
n
Vent
valve
Master fuel
gas engine
shut-off valve
Shut-off
valve
Shut-off
valve
F
Vent
iGPR