When a
fire occurs, it may take only seconds to become either one that
will cause extensive damage and disruption of the workplace, or
one that will remain as a minor incident.
Flame development, rise in temperature…
Fire detection
For the immediate detection of a fire, even in the initial phase,
an Ultra Violet or Infra Red flame detector along with adjustable
thermal heat sensors (from 70c onwards) can be installed directly
in the endangered fire zone. Any kind of fire outbreak is immediately
detected due to the visible and also thermal monitoring.
The corresponding fire detector releases a
signal to the extinguishing system control.
1
Microprocessor
controlled control unit with automatic fault recognition
6
CO2
release nozzles
2
Emergency
manual release button
7
IR
(Infrared) flame detector
3
Optical
alarm with intergrated warning siren
8
Electromagnetic
release valve
4
UV
(Ultraviolet) flame detector
9
CO2
Bottle (2kg - 50kg)
5
Heat
Detectors (70/90 degrees)
Extinguishing system control
The Kraft & Bauer microprocessor-controlled systems has been
designed for applications in the protection of property (proofed
against water jets IP 55) and contains 3 or 4 signal lines. All
functions are automatically monitored – visual and acoustic
displays for operation, power supply, alarm and back up battery.
Additional components include integrated emergency power supply,
manual release and extinguishing delay, as well as acoustic and
visual alarms. Re-transmission of alarms and display of failure
report are possible through potential relay outputs.
The control automatically releases the extinguishing
system through a pyrotechnic pressure valve or magnetic valve (option).
The release can also be done manually.
CO2 extinguisher bottle
The extinguisher bottle, with an electromagnetic valve release,
is certified by the TUV (UL proofed) and contains the necessary
quantity of CO2 within the bottle (2-20 kg). It is optionally available
with a fading signal device (weighing appliance).
The CO2 flows through the extinguishing nozzles
or extinguishing bar; the property to be protected is simultaneously
switched off.
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The above video has been kindly provided by specialist UK Machine Tool Manufacturers - Earlsdon Technology of Coventry, and was taken during testing of K & B systems on Earlsdon's machines.
This text will be replaced
Series of fires on a CNC Tool Grinding Machine during R & D tests of K & B systems
Flooding
The extinguisher container is connected with the extinguishing duct
by a high-pressure hose. The CO2 gas escapes through the specially
designed extinguishing nozzles,optimal swirling ensures that the
CO2 gas is omitted quickly and efficiently. Flooding may also be
carried out through a CO2 extinguishing duct. CO2 carbon dioxide
is non-odorous and colourless and in its deployment a completely
neutral gas, which does not damage or contaminate property and does
not cause any corrosion. It displaces the atmospheric oxygen that
is required for the fire to react. The single exhaust and filtering
system is also extinguished and electrically disconnected from the
covered machines. Alternatively, other extinguishers (eg.argon)
may also be selected when using materials such as titanium.
After the fire the system can be reset by
replacing the empty CO2 bottle with a refilled bottle, causing no
further delays to production.
Kraft & Bauer microprocessor-controlled fire protection extinguishing
systems ensure around-the-clock unattended operation with peace
of mind.
