Title of Invention

FLAME VIEWING PORT ENCLAVE LOCKING DEVICE

Abstract The present invention comprises an improved flame viewing port enclave locking device comprising atleast one viewing port cover (4) releasably fixed to a flame viewing port clamp (5) and a flame viewing port flame (3) having at least one hinge accommodating the sub assembly (4,5) of the flame viewing port cover (4) and the flame viewing port clamp (5) via atleast one first pin (7) and a frame viewing port latch (6) detachably attached to the sub-assembly (4,5) via a second pin (8).
Full Text FIELD OF THE INVENTION
The present invention generally relates to the boiler furnaces used in power
plants. In particular, the present invention relates to different control means
disposed on the power generation system to monitor the boiler performance.
More particularly, the present invention relates to an improved flame viewing
port device adaptable in particular to power boilers for observing the operating
parameters and accordingly monitoring the system performance via the control
means.
BACKGROUND OF THE INVENTION
Flame viewing ports are disposed in Boiler furnace region. The flame viewing
ports are used for the purpose of observing the burner flame, condition of water
wall, etc. The flame viewing ports are configured on all the four sides of the
furnace at different elevations. Boiler performance varies depending on the
nature of burner flame and condition of the water wall surface. During operation
of the system, such parameters are being monitored by various control means.
In addition, various displays means to display the above data repeatedly at
different phases of operation are provided. As the Power boilers are operated
maintaining negative pressure inside the furnace, the Flame viewing ports can be
used even during operation of the boilers. Boiler operating personnel are
required to operate Flame viewing port to have visual information's.
The prior art (Fig.1) observation doors made of casting / Aluminized steel have
many in-adequacies like heavy weight, improper closing, sagging of door,
improper locking arrangement.
OBJECTS OF THE INVENTION
It is therefore an object of the invention to provide an improved flame viewing
port device adaptable in particular to power boilers, which is lighter in weight.
Another object of the invention is to provide an improved flame viewing port
device adaptable in particular to power boilers, which has an improved locking
means to the door of the device.
A further object of the invention is to provide an improved flame viewing port
device adaptable in particular to power boilers, which eliminates the sagging
phenomenon of the door during its useage.
A still further object of the invention is to provide an improved flame viewing
port device adaptable in particular to power boilers, which ensures a matching
sealing of the door of the device.
An yet another object of the invention is to provide an improved flame viewing
port device adaptable in particular to power boilers, which is commercially better
acceptable being cost-effective.
BRIEF DESCRIPTION OF THE INVENTION
Accordingly there is provided an improved flame viewing port device comprising
atleast one viewing port cover releasably fixed to a viewing port clamp; a
viewing port frame having atleast one hinge accommodating the sub-assembly of
the viewing port cover and the viewing port clamp via atleast one first pin; a
viewing port latch detachably attached to the sub-assembly via a second pin.
The device has individual components made of bodies of steel casting /
Aluminum casting / Aluminized steel thereby providing an easily installable /
useable light - weight device. The viewing port clamp acts as a matching closure
between the port cover and the port frame. The viewing port latch ensures a
perfect lock with the frame. The improved flame viewing port is disposed on the
seal box of the boiler furnace being mounted thereon using a plurality of
fasteners.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Figure 1 - Assembly of prior art devices.
Figure 2 - A Flame viewing port device according to the present invention.
Figure 3 - Flame viewing port frame of the device of Figure - 2.
Figure 4 - Flame viewing port cover of the device of Figure - 2.
Figure 5 - Flame viewing port clamp of the device of Figure - 2.
Figure 6 - Flame viewing port latch of the device of Figure - 2.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF
THE INVENTION
As shown in the accompanying figure 2, the improved flame viewing port device
has atleast one viewing port cover (4) releasably fixed to a flame viewing port
clamp (5); a flame viewing port frame (3) having at least one hinge
accommodating the sub-assembly (4, 5) of the flame viewing port cover (4) and
the flame viewing port clamp (5) via atleast one first pin (7); a flame viewing
port latch (6) detachably attached to the sub-assembly (4, 5) via a second pin
(8).
The device has individual components made of bodies of steel casting /
Aluminum casting / Aluminized steel thereby providing an easily installable /
useable light - weight device. The flame viewing port clamp (5) acts as a
matching closure between the flame viewing port cover (4) and the flame
viewing port frame (3). The flame viewing port latch (6) ensures a perfect lock
with the flame viewing port frame (3). The improved flame viewing port device
(2) is disposed on the seal box of the boiler furnace being mounted thereon
using a plurality of fasteners (not shown).
WE CLAIM
1. An improved flame viewing port enclave locking device comprising
atleast one viewing port cover (4) releasably fixed to a flame viewing
port clamp (5); a flame viewing port flame (3) having at least one
hinge accommodating the sub assembly (4,5) of the flame viewing port
cover (4) and the flame viewing port clamp (5) via atleast one first pin
(7); a frame viewing port latch (6) detachably attached to the sub-
assembly (4,5) via a second pin (8).
2. The device as claimed in claim 1, wherein the flame viewing port latch
(6) is configured profilitically to ensure an automatic locking in
registration with closure of the device.
3. The device as claimed in claim 1, wherein the constituent components
each comprise lightweight alloy material.
4. An improved flame viewing port device as herein substantially
described and illustrated with reference to the accompanying drawings.

The present invention comprises an improved flame viewing port enclave
locking device comprising atleast one viewing port cover (4) releasably fixed
to a flame viewing port clamp (5) and a flame viewing port flame (3) having
at least one hinge accommodating the sub assembly (4,5) of the flame
viewing port cover (4) and the flame viewing port clamp (5) via atleast one
first pin (7) and a frame viewing port latch (6) detachably attached to the
sub-assembly (4,5) via a second pin (8).

Documents:

00475-kol-2005-description provision.pdf

00475-kol-2005-form 1.pdf

00475-kol-2005-form 2.pdf

00475-kol-2005-form 3.pdf

475-kol-2005-abstract.pdf

475-kol-2005-claims.pdf

475-kol-2005-correspondence.pdf

475-kol-2005-description (complete).pdf

475-kol-2005-drawings.pdf

475-kol-2005-examination report.pdf

475-kol-2005-form 1.pdf

475-KOL-2005-FORM 15.pdf

475-kol-2005-form 18.pdf

475-kol-2005-form 2.pdf

475-kol-2005-form 3.pdf

475-kol-2005-form 5.pdf

475-KOL-2005-FORM-27-1.pdf

475-KOL-2005-FORM-27.pdf

475-kol-2005-gpa.pdf

475-kol-2005-granted-abstract.pdf

475-kol-2005-granted-claims.pdf

475-kol-2005-granted-correspondence.pdf

475-kol-2005-granted-description (complete).pdf

475-kol-2005-granted-drawings.pdf

475-kol-2005-granted-examination report.pdf

475-kol-2005-granted-form 1.pdf

475-kol-2005-granted-form 18.pdf

475-kol-2005-granted-form 2.pdf

475-kol-2005-granted-form 3.pdf

475-kol-2005-granted-form 5.pdf

475-kol-2005-granted-gpa.pdf

475-kol-2005-granted-reply to examination report.pdf

475-kol-2005-granted-specification.pdf

475-KOL-2005-PA.pdf

475-kol-2005-reply to examination report.pdf

475-kol-2005-specification.pdf


Patent Number 236142
Indian Patent Application Number 475/KOL/2005
PG Journal Number 40/2009
Publication Date 02-Oct-2009
Grant Date 30-Sep-2009
Date of Filing 06-Jun-2005
Name of Patentee BHARAT HEAVY ELECTRICALS LIMITED
Applicant Address REGIONAL OPERATIONS DIVISION (ROD), PLOT NO: 9/1, DJBLOCK, 3RD FLOOR, KARUNAMOYEE, SALT LAKE CITY, KOLKATA-700091, HAVING ITS REGISTERED OFFICE AT BHEL HOUSE, SIRI FORT, NEW DELHI-110049, INDIA
Inventors:
# Inventor's Name Inventor's Address
1 CHELLAMUTHU GUNASEKARAN HIGH PRESSURE BOILER PLANT, BHARAT HEAVY ELECTRICALS LIMITED, THIRUCHIRAPPALLI-620014
2 CHANDRAHASAN SELVARAJ HIGH PRESSURE BOILER PLANT, BHARAT HEAVY ELECTRICALS LIMITED, THIRUCHIRAPPALLI-620014
3 CHANDRASEKAR SANKARARAMASAMY ATHITHYAN HIGH PRESSURE BOILER PLANT, BHARAT HEAVY ELECTRICALS LIMITED, THIRUCHIRAPPALLI-620014
PCT International Classification Number F23N 005/08
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA