U.S. patent application number 14/008219 was filed with the patent office on 2014-01-16 for power augmentation system with dynamics damping.
The applicant listed for this patent is Steven Gumpangkum, Sergey Maskhutovich Khayrulin, Ilya Aleksandrovich Slobodyanskiy, Dmitry Vladlenovich Tretyakov. Invention is credited to Steven Gumpangkum, Sergey Maskhutovich Khayrulin, Ilya Aleksandrovich Slobodyanskiy, Dmitry Vladlenovich Tretyakov.
Application Number | 20140013754 14/008219 |
Document ID | / |
Family ID | 44863196 |
Filed Date | 2014-01-16 |
United States Patent
Application |
20140013754 |
Kind Code |
A1 |
Slobodyanskiy; Ilya Aleksandrovich
; et al. |
January 16, 2014 |
POWER AUGMENTATION SYSTEM WITH DYNAMICS DAMPING
Abstract
A power augmentation system for a gas turbine engine which may
include a transition piece of a combustor and a steam manifold
positioned about the transition piece. The transition piece may
include a number of transition piece passageways therethrough and
the steam manifold may include a number of manifold passageways
therethrough. The manifold passageways align with the transition
piece passageways.
Inventors: |
Slobodyanskiy; Ilya
Aleksandrovich; (Greenville, SC) ; Khayrulin; Sergey
Maskhutovich; (Moscow, RU) ; Tretyakov; Dmitry
Vladlenovich; (Moscow, RU) ; Gumpangkum; Steven;
(Tampa, FL) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Slobodyanskiy; Ilya Aleksandrovich
Khayrulin; Sergey Maskhutovich
Tretyakov; Dmitry Vladlenovich
Gumpangkum; Steven |
Greenville
Moscow
Moscow
Tampa |
SC
FL |
US
RU
RU
US |
|
|
Family ID: |
44863196 |
Appl. No.: |
14/008219 |
Filed: |
March 31, 2011 |
PCT Filed: |
March 31, 2011 |
PCT NO: |
PCT/RU2011/000226 |
371 Date: |
September 27, 2013 |
Current U.S.
Class: |
60/722 |
Current CPC
Class: |
F23M 20/005 20150115;
F23R 2900/00013 20130101; F23L 7/005 20130101; F05D 2260/96
20130101; F23R 3/00 20130101; F01D 9/023 20130101; F02C 3/305
20130101; F02C 5/11 20130101; Y02E 20/16 20130101 |
Class at
Publication: |
60/722 |
International
Class: |
F23R 3/40 20060101
F23R003/40 |
Claims
1. A power augmentation system with dynamics damping for a gas
turbine engine, comprising: a transition piece of a combustor; a
steam manifold positioned about the transition piece; the
transition piece comprising a plurality of transition piece
passageways therethrough; and the steam manifold comprising a
plurality of manifold passageways therethrough; the plurality of
manifold passageways aligning with the plurality of transition
piece passageways.
2. The power augmentation system of claim 1, wherein the plurality
of transition piece passageways comprises a plurality of apertures
therethrough.
3. The power augmentation system of claim 2, wherein the plurality
of apertures comprises a plurality of angled apertures.
4. The power augmentation system of claim 1, wherein the steam
manifold comprises a cavity therein.
5. The power augmentation system of claim 1, wherein the plurality
of manifold passageways comprises a plurality of tubes.
6. The power augmentation system of claim 5, wherein the plurality
of tubes comprises a plurality of angled tubes.
7. The power augmentation system of claim 1, wherein the steam
manifold comprises a plurality of purge holes.
8. The power augmentation system of claim 1, wherein the transition
piece comprises a frame and wherein the steam manifold comprises a
steam passage positioned on the frame.
9. The power augmentation system of claim 1, wherein the plurality
of manifold passageways comprises a predetermined size based upon
the frequency of the combustor.
10. A power augmentation system with dynamics damping for a gas
turbine engine, comprising: a transition piece of a combustor; a
steam manifold positioned about the transition piece; the
transition piece comprising a plurality of apertures extending
therethrough; the steam manifold comprising a plurality of tubes
extending therethrough; the plurality of tubes comprising a
predetermined size based upon the frequency of the combustor; and
the plurality of apertures aligning with the plurality of
tubes.
11. The power augmentation system of claim 10, wherein the
plurality of apertures comprises a plurality of angled
apertures.
12. The power augmentation system of claim 10, wherein the steam
manifold comprises a cavity therein.
13. The power augmentation system of claim 10, wherein the
plurality of tubes comprises a plurality of angled tubes.
14. The power augmentation system of claim 10, wherein the steam
manifold comprises a plurality of purge holes.
15. The power augmentation system of claim 10, wherein the
transition piece comprises a frame and wherein the steam manifold
comprises a steam passage positioned on the frame.
16. A power augmentation system with dynamics damping for a gas
turbine engine, comprising: a combustor; a steam manifold
positioned about the combustor; the combustor comprising a
plurality of apertures extending therethrough; the steam manifold
comprising a plurality of tubes extending therethrough; and the
plurality of tubes comprising a predetermined size based upon the
frequency of the combustor.
17. The power augmentation system of claim 16, wherein the
combustor comprises a transition piece and wherein the steam
manifold is positioned about the transition piece.
18. The power augmentation system of claim 16, wherein the
plurality of apertures align with the plurality of tubes.
19. The power augmentation system of claim 16, wherein the
plurality of apertures comprises a plurality of angled
apertures.
20. The power augmentation system of claim 16, wherein the
plurality of tubes comprises a plurality of angled tubes.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This is a national stage application under 35 U.S.C.
.sctn.371(c) prior-filed co-pending PCT patent application serial
number PCT/RU2011/00226, filed on Mar. 31, 2011, the entire
contents of which are incorporated herein by reference.
TECHNICAL FIELD
[0002] The present application relates generally to gas turbine
engines and more particularly relates to a steam manifold
positioned about a transition piece of a combustor so as to provide
power augmentation and dynamics damping.
BACKGROUND OF THE INVENTION
[0003] Using a lean fuel air mixture is a known method of
decreasing NO.sub.x emissions and currently is in use in multiple
designs of gas turbine combustion systems. The lean fuel air
mixture includes an amount of fuel premixed with a large amount of
excess air. Although such a lean mixture reduces the amount of
NO.sub.x emissions, high frequency combustion instabilities may
result. Such instabilities may be referred to as combustion
dynamics. These instabilities may be caused by burning rate
fluctuations and may create damaging pressure oscillations that may
impact on gas turbine durability. As a result of these
instabilities, damping or resonating devices may be used with the
combustor.
[0004] Providing additional mass flow into a gas turbine is a known
method of enhancing overall gas turbine engine power output and
efficiency. Steam injection is commonly used for this purpose. For
instance, about a five percent (5%) steam addition to a gas turbine
combined cycle system may result in about a ten percent (10%)
output increase. Issues may arise, however, because the steam may
impact on flame stability and freeze CO oxidation in the combustor.
As such, the use of steam injection may limit overall emissions and
turndown capabilities of gas turbines.
[0005] There is therefore a desire for improved combustion dynamics
damping as well as power augmentation systems and methods.
Preferably, such systems and methods may increase overall system
performance and efficiency while reducing combustion dynamics.
SUMMARY OF THE INVENTION
[0006] The present application thus provides a power augmentation
system for a gas turbine engine. The power augmentation system may
include a transition piece of a combustor and a steam manifold
positioned about the transition piece. The transition piece may
include a number of transition piece passageways therethrough and
the steam manifold may include a number of manifold passageways
therethrough. The manifold passageways may align with the
transition piece passageways.
[0007] The present application further provides a power
augmentation system for a gas turbine engine. The power
augmentation system may include a transition piece of a combustor
and a steam manifold positioned about the transition piece. The
transition piece may include a number of apertures extending
therethrough and the steam manifold may include a number of tubes
extending therethrough such that the apertures align with the
tubes. The tubes may include a predetermined size based upon the
frequency of the combustor.
[0008] The present application further provides a power
augmentation system for a gas turbine engine. The power
augmentation system may include a combustor and a steam manifold
positioned about the combustor. The combustor may include a number
of apertures extending therethrough and the steam manifold may
include a number of tubes extending therethrough. The tubes may
include a predetermined size based upon the frequency of the
combustor.
[0009] These and other features and improvements of the present
application will become apparent to one of ordinary skill in the
art upon review of the following detailed description when taken in
conjunction with the several drawings and the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 is a schematic view of a gas turbine engine.
[0011] FIG. 2 is a perspective view of a steam manifold system as
is described herein.
[0012] FIG. 3 is a side cross-sectional view of the steam manifold
system of FIG. 2.
[0013] FIG. 4 is a further side cross-sectional view of the steam
manifold system of FIG. 2.
DETAILED DESCRIPTION
[0014] Referring now to the drawings, in which like numbers refer
to like elements throughout the several views, FIG. 1 shows a
schematic view of a gas turbine engine 10. As is known, the gas
turbine engine 10 may include a compressor 20 to compress an
incoming flow of air. The compressor 20 delivers the compressed
flow of air to a combustor 30. The combustor 30 mixes the
compressed flow of air with the compressed flow of fuel and ignites
the mixture. (Although only a single combustor 30 is shown, the gas
turbine engine 10 may include any number of combustors 30.) The hot
combustion gases are in turn delivered to a turbine 40. The hot
combustion gases drive the turbine 40 so as to produce mechanical
work. The mechanical work produced in the turbine 40 drives the
compressor 20 and an external load 50 such as an electrical
generator and the like. The gas turbine engine 10 may use natural
gas, various types of syngas, and other types of fuel. The gas
turbine engine 10 may have many other configurations and may use
other types of components. Multiple gas turbine engines 10, other
types of turbines, and other types of power generation equipment
may be used herein together.
[0015] FIGS. 2-4 show a power augmentation system with dynamics
damping or a steam manifold system 100 as is described herein. The
steam manifold system 100 may be positioned at an end 110 of a
transition piece 120 of the combustor 30. The transition piece 120
directs a stream of hot exhaust gases 125 from the combustor 30 to
the turbine 40 as is described above. The transition piece 120 may
have a number of apertures 130 positioned about the end 110
thereof. Any number of the apertures 130 may be used. Some of the
apertures 130 may be positioned at an angle with respect to the
direction of the stream of hot exhaust gases 125 through the
combustor 30. The angle may be about 30 to about 60 degrees,
although any desired angle may be used herein. The apertures 130
may have any desired size or shape as is described in more detail
below.
[0016] The steam manifold system 100 may include a steam manifold
140 positioned about the end 110 of the transition piece 120 in the
vicinity of the apertures 130. The steam manifold 140 may have any
desired size or shape. The steam manifold 140 may include an
internal cavity 150. The cavity 150 may surround the end 110 of the
transition piece 120. The steam manifold 140 may have a number of
tubes 160 on one end thereon. The tubes 160 may be in communication
with the apertures 130 of the transition piece 120. Any number of
the tubes 160 may be used. The tubes 160 also may be positioned at
an angle with respect to the stream of hot exhaust gases 125. As
above, the angle may be about 30 to about 60 degrees although any
angle may be used. The tubes 160 may have any desired size or shape
as is described in more detail below. The steam manifold 140 also
may have a number of purge holes 170 positioned therein. Any number
of the purge holes 170 may be used herein. The purge holes 170 may
have any desired size or shape.
[0017] The steam manifold system 100 may have a steam passage 180.
The steam passage 180 may be in communication with the cavity 150
of the steam manifold 140. The steam passage 180 may have a valve
190 mounted thereon. The steam passage 180 may be mounted on an aft
frame 200 of the transition piece 120. Other positions may be used
herein. The steam passage 180 may provide a volume of steam 210 to
the cavity 150 of the steam manifold 140. The quality and
characteristics of the steam 210 may vary.
[0018] In use, the steam 210 from the steam passage 180 may pass
into the cavity 150 of the steam manifold 140. Most of the volume
of the steam 210 passes through the tubes 160 of the steam manifold
140, through the apertures 130 of the transition piece 120 and into
the stream of hot exhaust gases 125 towards the turbine 40. A small
volume of the steam 210 may pass through the purge holes 170 and
into a compressor discharge zone, mix with compressor airflow and
then pass into combustor, thus reducing NO.sub.x emission.
[0019] In a secondary mode of operation, the valve 190 of the steam
passage 180 may be closed. Air from the compressor discharge zone
thus may pass through the purge holes 170, the cavity 150 the tubes
160 of the steam manifold 140, and through the apertures 130 of the
transition piece 120.
[0020] The steam manifold system 100 may be used on a MS6001V
combustor offered by General Electric Company of Schenectady, N.Y.
The steam manifold system 100 may be installed on any type of can,
annular, or can-annular type combustion system at the aft end of
the transition piece 120 or otherwise.
[0021] Injection of the steam 210 just upstream of the turbine 40
thus provides for enhanced power output and efficiency. The
positioning of the steam manifold 140 about the end 110 of the
transition piece 120 ensures that the steam 210 is injected
downstream of the reaction zone of the combustor 30 and just
upstream of the turbine 40. The injection 40 of the steam 210 thus
does not impact on the reaction temperature of the combustor 30
such that CO emissions should not increase. The impact on flame
stability also is lessened.
[0022] The steam manifold system 100 also may act as a type of a
Helmholtz resonator. A Helmholtz resonator provides a cavity having
a sidewall with openings therethrough. The fluid inertia of the
gasses within the pattern of the apertures 130 and the tubes 160
may be reacted by the volumetric stiffness of the closed cavity 150
so as to produce a resonance in the velocity of the flow of the
steam 210 therethrough. The number, length, diameter, shape,
position of the apertures 130, the tubes 160, and the volume of the
cavity 150 may vary with respect to the damping frequency range.
Specifically, the design criteria may include the size of the
apertures 130 and the tubes 160, the diameter of the apertures 130
and the tubes 160, the number of the apertures 130 and the tubes
160, the mass flow rate through the cavity 150, and the volume of
the cavity 150.
[0023] The dynamic pulsation spectrum of the combustor 30 may be
determined from known testing methods. The apertures 130 and the
tubes 160 are sized to allow low velocity steam to discharge into
combustor 30. As such, the dynamic pressure pulsations at any
frequency may be dampened by the steam manifold system 100.
Further, the frequencies may be dampened without the use of a
separate resonator. Any number of steam manifolds 140 may be used
herein such that a number of different frequencies can be
dampened.
[0024] The steam manifold system 100 thus provides power
augmentation to the gas turbine engine 10 with minimal impact on
increasing CO emissions or flame stability. Likewise, the steam
manifold system 100 may effectively damp dynamic pulsations in the
combustor 30 so as to improve operability and lessen durability
risks. The steam manifold system 100 thus generally increases power
output while also decreasing forced outages and combustion
inspection intervals. As such, the steam manifold system 100 may
reduce repair and operation costs.
[0025] It should be apparent that the foregoing relates only to
certain embodiments of the present application and that numerous
changes and modifications may be made herein by one of ordinary
skill in the art without departing from the general spirit and
scope of the invention as defined by the following claims and the
equivalents thereof.
* * * * *