FILTER DESIGN
Structure of the BGUSA Debris Filter System
Design & Operation
| The filter element (2)
is circular and a little bigger than a semi-circle.
Normally all debris bigger than 5-6 mm are
separated. BG USA filters can be designed
according to the size of the debris which
have to be separated.
The surface of the filter
is divided in segments through stainless
steel ribs. In that way "debris collectors"
are built- in, the height of which is designed
according to the largest expected debris. |
|
Generally the height of
the stainless steel ribs is 60 mm.
The backwashing rotor (3)
is as big as a filter segment (debris collector)
and seals the same during the backwashing
process, so that the filter is relieved
from pressure and can be backwashed.
The filter can be installed
in horizontal or vertical position. |
FILTER OPERATION
Mode of operation of the BGUSA Debris Filter Systems
| Through its
debris collectors the debris filter type
HR continuosly separates all the debris
that might otherwide clog the condenser
tubes.
The degree of dirt of the
debris filter is monitored on a screen monitor
(8) with limit contacts. When the highest
permissible degree of dirt is reached, the
waste water valve (10) opens automatically
and the backwashing rotor (3) is switched
on.
The low pressure existing
at the end of the backwashing pipe (4) induces
a reversal of the direction of flow (7)
of the cooling water in the area backwashing
rorot (3) - filter segment (debris collector).
|
|
The filter element is sealed
and relieved from pressure through the backwashing
rotor (3).
Therefore a strong
backwash flow (3) lifts off the debris
from the filter surface and transports the
debris to the backwash pipe (4) through
the backwashing rotor channels (9). The
disposal of the separated debris is done
through the waste water valve (10).
The BGUSA
Debris Filter System is backwashed
dependently on time, independently of the
degree of dirt.
|
PROTECTION
against interruption of the cooling water(optional
feature)
Optionally
we offer an overpressure
safety device for the
debris filter. For example when large quantities
of debris suddenly occur owing to particular operating
conditions. The safety overpressure device causes
a by-pass to be automatically opened when exceeding
a permissible dirt level which has been set in advance.
If there is an overpressure safety device both sealing
plates (5) are designed as flaps with part - turn
valve actuator. The cross section of the by-pass
is about 25% of the surface of the pipe and can
be increased if necessary.
This overpressure
safety device
prevents from
- interrupting the cooling water
flow and
- damaging the internal parts of
the filter
BG USA Debris Filter Systems
-Patent protection pending-
 |
1.
Rotor actuation
2. Filter
element
3. backwashing
rotor
4. Backwashing
pipe
5. By-pass
flap (optional feature)
6. Filter
housing
7. Backwash
flow (sealed section)
8. Screen
monitor
9. Backwashing
rotor channels
10. Waste
water valve |
YOUR ADVANTAGES
when using the BG USA Debris Filter System
- No clogging of the
condenser tubes
- No manual cleaning
of the condenser, therefore no downtimes
- No corrosion of the
condenser tubes through the formation
of unaerated parts of the tubes
- Optimum cooling action
- Optimum heat transfer
- Reliable separation and removal
of debris of any kind by means of the BG
USA Technology
- Easy installation through arbitrary fitting position
- Minute pressure drops - generally lower than 0.05 bar
|
- Short backwash time (70-140 seconds) with low
cleaning water requirements (less than 3%)
- No additional water required
for backwash
- Simple inside contruction, therefore easy access to the internal equipment
of the filter: even sealing rings can be
changed during operation
- Maximum efficiency through maximum debris separation
- Protection
against interruption of the cooling water
(optional feature) due to a sudden extreme
surge of solid matters when a bypass is
opened
- Optimum protection against
any overload of the internal parts
- Reliable world-wide
after-sales service
|
BG USA Debris Filter Systems Type HR allow to
separate:
- plastics
- grass
- Stones
- fish
|
- Musssels
- seaweed
- vegtable matter
- Wood
|
- Debris Filter
Systems
- Tube Cleaning Systems for Condensers and Heat Exchangers from 12" up to 120"
- BG
USA Debris Filters type CDF
- BG
USA Automatic Filter type Brackett
Brieden
- Sponge Rubber Balls and Corundum Balls in Various hardnesses for Tube Cleaning Systems
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