Sonardyne UK (Head Office)
T. +44 (0) 1252 872288
F. +44 (0) 1252 876100
E. sales@sonardyne.com
www.sonardyne.com
Datasheet
Through-Hull Transceiver Deployment Machine
Description
The Type 7950 Through-Hull
Transceiver Deployment Machine
consists of a hydraulically operated
pole, a sealed bearing section and a
sea chest service section, with
inspection door. The whole machine
sits on a gate valve which in turn is
mounted on the flange of a through
hull penetration pipe.
The ideal deployed length is
dependant on each particular
application, but in general terms it is
best to minimise the deployed pole
length to achieve a specified
acoustic performance. Typically, a
length of between one and three
metres below the hull has been found
to be acceptable. The pole is very
rugged and is designed to be highly
resistant to vibration caused by
vortex shedding. Operational speeds
of up to 10 knots through the water
may be achieved safely (1) with the
ability to survive short duration
exposure to higher speeds.
Sonardyne can give detailed
application advice on positioning,
installing and commissioning the
machine. The sea chest, when the
gate valve is closed, provides easy
access to the retracted Transducer for
service and inspection purposes. The
gate valve also allows the machine
to be removed without dry docking.
An optional hydraulic drive for the
valve is available.
The machine can be controlled from
a main control panel or locally at the
machine. A bridge control is also
available as an option.
The hydraulic power pack and main
control can be mounted remotely if
the machine is to be configured for
Zone 1 classification. The standard
form of machine can be simply
configured to the meet individual
vessel requirements by changing the
height of the machine and providing
adaptor flanges for different size or
specification gate valves.
For specialist or demanding
applications, machines of this
general type can be engineered to
suit customer specific requirements.
Key Features
•
High strength carbon steel pole for
stiffness and strength
•
Nickel based (NiCrSiB) coating of
pole for durability and corrosion
resistance.
•
High integrity bearing and sealing
design
•
Reliable hydraulic actuation with
safety interlocks
•
Configurable design, can be Zone
1 Ex rated
•
Operational speeds of up to 10
knots. Notes (1) and (2) overleaf
•
Manual retraction of pole in
emergency with loss of power
SONARDYNE [ SONARDYNE SOUND IN DEPTH ]
