FIELD OF INVENTION
The present invention generally relates to improved flow distribution
to the outlet tubes of the boiler. More particularly, the invention
relates to a flow regularization device for providing improved fluid
flow to the outlet tubes of boiler headers in a boiler system.
BACKGROUND OF THE INVENTION
Boiler headers constitute one of the major components in Boiler
Systems. It is used for flow distribution to the boiler tubes and
further acts as a reservoir in a boiler system. In other words the
boiler headers serve the purpose of water drums in the boiler. The
term 'header' is commonly used in engineering field to define any
tube, chamber, drum, or similar component to which tubes or pipes
are connected in such a way so as to permit the flow of fluid from
one tube (or group of tubes) to another. Essentially, a header is a
type of manifold or a collection point.
It has been experimentally found by the inventors that the
performance of the existing boiler systems substantially suffer due to
the phenomenon that all the tubes in the boiler system fail to receive
an uniform fluid flow from the boiler headers, in particular the outlet

tubes of the boiler headers. Presently, the fluid flow from the boiler
headers is controlled by an orifice which is not satisfactory.
US Patent US 5789324 discloses a method to provide a uniform gas
flow at the surface of a planar device or wafer in a processing system
having a substantially cylinder chamber through which processing
gases flow toward an asymmetrically located outlet port. According to
this invention, a collar or baffle along the gas stream in the chamber
is disposed in a plane of the surface of the planar device or wafer.
US Patent US 4553925 describes a method to provide a dual flow
distribution header system in which the flow is divided into two paths
before the distribution header but after a metering device. The flow
is controlled by separate butterfly valves disposed in each path,
whereby the control function is magnified and becomes more precise
in each path. The invention is particularly adapted in industrial
heating furnaces employing dual burner systems.

OBJECTS OF THE INVENTION
It is therefore an object of the invention to propose a flow-
regularization device for providing improved fluid flow to the outlet
tubes of boiler header in a boiler system, which eliminates the
disadvantages of prior art.
Another object of the invention is to propose a flow-regularization
device for providing improved fluid flow to the outlet tubes of boiler
header in a boiler system, which adapts a baffle plate for water and
steam side of the boilers.
A still another object of the invention is to propose a flow-
regularization device for providing improved fluid flow to the outlet
tubes of boiler header in a boiler system, in which the hole size of the
baffle plate are configured with an incremental size at the opposite
ends of the baffle plate.
A further object of the invention is to propose a flow-regularization
device for providing improved fluid flow to the outlet tubes of boiler
header in a boiler system, which selects the device configuration
through simulation of uniform distribution pattern with multi-hole
baffle plate by using the CFD analysis.

SUMMARY OF THE INVENTION
A simulation of the uniform flow distribution to Boiler tubes is
estimated by CFD analysis, and the uniform flow is controlled by a
device configured as a baffle plate and is placed in the middle of the
boiler header being perpendicular to the inlet flow direction. The
baffle plate of the Boiler header is provided with different incremental
holes towards the opposite ends (A,B) of the baffle plate. These
different hole sizes in opposite directions control the fluid flow in the
Boiler header.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Figure 1 - Shows an overall arrangement of a Boiler header and
tubes in a boiler system.
Figure 2 - Shows an embodiment of the Boiler header with a flow
regularization device according to the invention.
Figure 3 - Shows an embodiment of the flow regularization device
with different incremental hole size according to the
invention.

DETAILED DESCRIPTION OF THE INVENTION
According to the invention, initially a simulation of the uniform flow
distribution to Boiler tubes is estimated by CFD analysis, and a
geometry 3D model is developed. A mesh of the Boiler header with
different hole size is configured on a baffle plate. Then, the Boiler
header with the baffle plate having different hole size is further
simulated at different flow condition. The result of the simulations are
compared with a typical Plain Boiler header.
Figure 1 shows an overall arrangement of a Boiler header (1) and
tubes (2) without a baffle plate according to prior art. Figure 2 shows
an embodiment of the inventive device of the Boiler header (1) with
different hole size baffle plate (3) and tubes (2). The uniform flow is
controlled by the baffle plate (3) which is placed in the middle of the
header (1) being perpendicular to the inlet flow direction.
The baffle plate (3) of the Boiler header (1) is configured with
different incremental hole (4) sizes in opposing directions i.e. towards
A and B end of the baffle plate as shown in Figure 3. These different
hole (4) sizes control the fluid flow in Boiler header (1).

WE CLAIM : .
1. A flow reguiarization device for providing improved fluid flow to the
outlet tubes of boiler headers in a boiler system, comprising :
a baffle plate (1) disposed centrally into the boiler header being
perpendicular to the inlet flow direction,
wherein the baffle plate is configured with differently sized incremental
holes extending towards the opposed directions, and wherein a
simulation by adapting CFD analysis is undertaken based on uniform
flow distribution followed by generating a 3D model for comparison
with the flow distribution in a boiler system without the device, and
further followed by a selection of the hole size configuration of the
device based on the evolved comparison data.
2. A flow reguiarization device for providing improved fluid flow to the
outlet tubes of boiler headers in a boiler system, as substantially
described and illustrated herein with reference to the accompanying
drawings.

The invention relates to a flow regularization device for providing
improved fluid flow to the outlet tubes of boiler headers in a boiler
system, comprising : a baffle plate (1) disposed centrally into the
boiler header being perpendicular to the inlet flow direction, wherein
the baffle plate is configured with differently sized incremental holes
extending towards the opposed directions, and wherein a simulation
by adapting CFD analysis is undertaken based on uniform flow
distribution followed by generating a 3D model for comparison with
the flow distribution in a boiler system without the device, and
further followed by a selection of the hole size configuration of the
device based on the evolved comparison data.