CN114484499A - Head structure of combustion chamber - Google Patents
Head structure of combustion chamber Download PDFInfo
- Publication number
- CN114484499A CN114484499A CN202210088624.8A CN202210088624A CN114484499A CN 114484499 A CN114484499 A CN 114484499A CN 202210088624 A CN202210088624 A CN 202210088624A CN 114484499 A CN114484499 A CN 114484499A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- stage device
- gas
- flow
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention relates to the technical field of gas turbine research, in particular to a combustion chamber head structure which comprises a pre-combustion stage device and a main combustion stage device, wherein the main combustion stage device is sleeved outside the pre-combustion stage device and comprises a first sleeve component and a second sleeve component which are sequentially arranged along the gas flow direction in the pre-combustion stage device, a first gas collecting cavity is formed between the first sleeve component and the pre-combustion stage device, the first sleeve component is provided with a first inlet communicated with the first gas collecting cavity, and the first inlet is suitable for introducing mixed gas formed by mixing air and fuel gas; a first mixing cavity is formed between the second sleeve component and the precombustion stage device and communicated with the first gas collecting cavity, a second inlet communicated with the first mixing cavity is formed in the second sleeve component, and the second inlet is suitable for introducing fuel. The real-time adjustment of the premixing degree of the main combustion stage premixed combustion is realized, the adjustment in a large range of the premixing degree of the main combustion stage fuel is obtained, and the premixing degree of the main combustion stage fuel meeting the requirements is obtained.
Description
Technical Field
The invention relates to the technical field of gas turbine research, in particular to a combustion chamber head structure.
Background
With the development of gas turbines in the fields of aviation, ground power generation and the like, people have higher and higher requirements on the pollution emission of the gas turbines. In particular, there are severe requirements for the pollutant emissions of civil aircraft engines, in particular the formation of carbon monoxide (CO), Unburned Hydrocarbons (UHC), Smoke (Smoke), nitrogen oxides (NOx). Among them, CO and UHC are mainly generated under low conditions, and Smoke and NOx are mainly generated under high conditions.
The core of reducing the above-mentioned pollutant emissions is the control of the temperature of the reactants and their homogeneity, lean premixed pre-evaporation combustors are common technical solutions, while the central staged design is the structure often adopted by such combustors. In practical application, the main combustion grade reactant cannot reach the full premixing degree, and the premixing degree has great influence on combustion performance, but the premixing proportion of the main combustion grade in the experimental process of the existing combustion chamber is difficult to obtain, and meanwhile, the premixing degree cannot be freely adjusted under most conditions.
Disclosure of Invention
The invention provides a head structure of a combustion chamber, which is used for solving the defects that reactants of a main combustion level in the combustion chamber in the prior art cannot reach the full premixing degree and the premixing proportion of the main combustion level is difficult to obtain in the experimental process, realizing the real-time adjustment of the premixing degree of the main combustion level premixed combustion, obtaining the large-range adjustment of the premixing degree of the main combustion level fuel, and monitoring the change of the fuel flow entering a second inlet in real time.
The invention provides a combustion chamber head structure, which comprises a pre-combustion stage device and a main combustion stage device, wherein the main combustion stage device is sleeved outside the pre-combustion stage device and comprises a first sleeve component and a second sleeve component which are sequentially arranged along the gas flow direction in the pre-combustion stage device, a first gas collecting cavity is formed between the first sleeve component and the pre-combustion stage device, the first sleeve component is provided with a first inlet communicated with the first gas collecting cavity, and the first inlet is suitable for introducing mixed gas of air and fuel gas; a first mixing cavity is formed between the second sleeve component and the precombustion stage device and is communicated with the first gas collecting cavity, a second inlet communicated with the first mixing cavity is formed in the second sleeve component, and the second inlet is suitable for introducing fuel.
According to the head structure of the combustion chamber provided by the invention, the first sleeve component comprises a first sleeve and a second sleeve which are sequentially arranged along the gas flow direction in the pre-combustion stage device, the first sleeve is coaxially connected with the second sleeve, and the first inlet is arranged on the first sleeve.
According to the head structure of the combustion chamber provided by the invention, the second sleeve component comprises a third sleeve and a fourth sleeve, the third sleeve is sleeved outside the fourth sleeve, a second gas collecting cavity is formed between the third sleeve and the fourth sleeve, the third sleeve is provided with the second inlet communicated with the second gas collecting cavity, the fourth sleeve is sleeved outside the pre-combustion stage device, a first mixing cavity is formed between the fourth sleeve and the pre-combustion stage device, and the fourth sleeve is provided with a third inlet suitable for communicating the first mixing cavity and the second gas collecting cavity.
According to the head structure of the combustion chamber provided by the invention, the second sleeve is provided with a first pressure sensor for detecting the pressure of the first gas collecting cavity.
According to the head structure of the combustion chamber provided by the invention, the third sleeve is provided with a second pressure sensor for detecting the pressure of the second gas collecting cavity.
According to the head structure of the combustion chamber provided by the invention, the main combustion stage device further comprises a first flow-homogenizing piece and a second flow-homogenizing piece, and the first flow-homogenizing piece and the second flow-homogenizing piece are sequentially arranged in the first gas-collecting cavity along the flowing direction of mixed gas in the first gas-collecting cavity.
According to the head structure of the combustion chamber provided by the invention, the pre-combustion stage device comprises a spray pipe, a third sleeve assembly and a fourth sleeve assembly which are sequentially arranged along the gas flow direction in the main combustion stage device, the third sleeve assembly is sleeved outside the spray pipe, a third gas collecting cavity is formed between the third sleeve assembly and the spray pipe, the third sleeve assembly is provided with a fourth inlet communicated with the third gas collecting cavity, and the fourth inlet is suitable for introducing air; a second mixing cavity is formed between the fourth sleeve assembly and the spray pipe, the second mixing cavity is communicated with the third gas collecting cavity, the spray pipe is provided with a fifth inlet communicated with the second mixing cavity, and the fifth inlet is suitable for spraying fuel gas.
According to the head structure of the combustion chamber provided by the invention, the pre-combustion stage device further comprises a third flow-homogenizing piece and a fourth flow-homogenizing piece, and the third flow-homogenizing piece and the fourth flow-homogenizing piece are sequentially arranged in the third gas-collecting cavity along the air flowing direction in the third gas-collecting cavity.
According to the head structure of the combustion chamber provided by the invention, the main combustion stage device further comprises a first cyclone piece, and the first cyclone piece is arranged between the first gas collecting cavity and the first mixing cavity.
According to the head structure of the combustion chamber provided by the invention, the precombustion stage device also comprises a second rotational flow member, and the second rotational flow member is arranged in the third gas collecting cavity.
The invention provides a head structure of a combustion chamber.A main combustion stage device adopts a fuel path flow dividing design, namely, one path of mixed gas formed by completely premixing air and fuel gas enters a first gas collecting cavity through a first inlet on a first sleeve component and then enters a first mixing cavity through the first gas collecting cavity, and the other path of mixed gas enters the first mixing cavity through a second inlet on a second sleeve component, so that the fuel gas and the mixed gas are mixed again in the first mixing cavity and then are sprayed out and combusted by the first mixing cavity.
The fuel gas of different mixed degrees is respectively entered through the first inlet and the second inlet, the total fuel flow of the main combustion level is controlled to be unchanged, the flow of the mixed gas entered through the first inlet is adjusted, the flow of the fuel gas entered through the second inlet is adjusted, the linkage adjustment of the fuel flow is realized, namely, the proportion of the fuel gas contained in the mixed gas entered through the first inlet and the fuel gas entered through the second inlet is adjusted, the premixing degree of the main combustion level premixed combustion can be adjusted in real time, the large-range adjustment of the premixing degree of the main combustion level fuel is obtained, the change of the fuel flow entered through the second inlet can be monitored in real time, the proportion of the mixed gas entered through the first inlet and the fuel gas entered through the second inlet can be changed in the experimental process, and the premixing degree of the main combustion level fuel meeting the requirements is obtained.
When the fuel gas that gets into when first import is more, then reactant mixes the degree height in advance, when the fuel gas that the second import got into is more, then reactant mixes the degree in advance lowly, and different reactant mixes the degree in advance and can bring different combustion effects to pollution degree and burning performance when the influence burning. The invention realizes active control of combustion performance and avoids unstable combustion while ensuring low-pollution combustion. Meanwhile, the sleeve component is provided with the inlet, the fuel channel is formed by matching, the head structure of the combustion chamber is constructed into the head part of the main combustion stage premixing degree adjustable central grading cyclone combustion chamber, and the burner head is simple in structure, convenient to assemble, beneficial to processing and low in processing cost.
In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions and the advantages brought by the technical features of the technical solutions described above, other technical features of the present invention and the advantages brought by the technical features of the present invention will be further described with reference to the accompanying drawings or will be understood by the practice of the present invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a cross-sectional view of a combustor head configuration provided by the present invention;
FIG. 2 is a schematic structural view of a head structure of a combustion chamber provided in the present invention;
FIG. 3 is a cross-sectional view of the first and second swirl elements of the combustor head structure provided by the present invention;
FIG. 4 is a schematic view of the construction of the first and second swirl elements of the combustor head construction provided by the present invention;
FIG. 5 is a schematic view of the flow distributing members of the combustion head construction provided by the present invention;
reference numerals:
100. a pre-combustion stage device; 110. a nozzle; 120. a third sleeve assembly; 130. a fourth sleeve assembly; 140. a third gas collecting cavity; 150. a second mixing chamber; 160. a third flow homogenizing member; 170. a fourth flow homogenizing member; 180. a second swirling member; 111. a fifth inlet; 121. a fifth sleeve; 122. a sixth sleeve; 131. a seventh sleeve; 1211. a fourth inlet;
200. a primary combustion stage device; 210. a first sleeve assembly; 220. a second sleeve member; 230. a first gas collection chamber; 240. a second gas collection chamber; 250. a first mixing chamber; 260. a first flow homogenizing member; 270. a second flow homogenizing member; 280. a first swirl member; 211. a first sleeve; 212. a second sleeve; 221. a third sleeve; 222. a fourth sleeve; 2111. a first inlet; 2211. a second inlet; 2221. a third inlet;
310. a first mounting base; 320. a second mounting base;
400. a mounting seat; 500. and (7) a cover plate.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Further, in the description of the embodiments of the present invention, unless otherwise specified, "a plurality", and "a plurality" mean two or more, and "a plurality", "several", and "several groups" mean one or more.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1 and fig. 2, a combustion chamber head structure provided by an embodiment of the present invention includes a pre-combustion stage device 100 and a main combustion stage device 200, the main combustion stage device 200 is sleeved outside the pre-combustion stage device 100, the main combustion stage device 200 includes a first sleeve assembly 210 and a second sleeve assembly 220 sequentially arranged along a gas flow direction in the pre-combustion stage device 100, a first gas collecting chamber 230 is formed between the first sleeve assembly 210 and the pre-combustion stage device 100, the first sleeve assembly 210 is provided with a first inlet 2111 communicated with the first gas collecting chamber 230, and the first inlet 2111 is adapted to be introduced with a mixed gas of air and fuel gas; the second sleeve assembly 220 and the precombustion stage device 100 form a first mixing cavity 250, the first mixing cavity 250 is communicated with the first gas collecting cavity 230, the second sleeve assembly 220 is provided with a second inlet 2211 communicated with the first mixing cavity 250, and the second inlet 2211 is suitable for introducing fuel.
The head structure of the combustion chamber of the embodiment of the invention forms a main combustion stage channel and a pre-combustion stage channel through the pre-combustion stage device 100 and the main combustion stage device 200 respectively, the pre-combustion stage device 100 and the main combustion stage device 200 are in a sleeved structure from inside to outside, the gas flow directions in the main combustion stage channel and the pre-combustion stage channel are basically the same, the combustion ends of the main combustion stage device 200 and the pre-combustion stage device 100 are both positioned at the same side, that is, the main combustion stage device 200 and the pre-combustion stage device 100 spray fuel at the same side to combust to form flame. The first sleeve assembly 210 is used as an upstream assembly of the main combustion stage device 200, and a first gas collecting cavity 230 formed between the first sleeve assembly and the pre-combustion stage device 100 is an upstream gas collecting cavity of the main combustion stage channel; the second sleeve member 220 is used as a downstream component of the main combustion stage device 200, a first mixing chamber 250 formed between the second sleeve member and the pre-combustion stage device 100 is a downstream gas collecting chamber of the main combustion stage channel, and an outlet of the first mixing chamber 250 is a combustion end of the main combustion stage device 200.
The primary fuel stage device 200 adopts a fuel path flow splitting design, i.e. one path is that the mixed gas formed by completely premixing air and fuel gas enters the first gas collecting chamber 230 through the first inlet 2111 on the first sleeve assembly 210, and then enters the first mixing chamber 250 through the first gas collecting chamber 230, and the other path is that the fuel gas enters the first mixing chamber 250 through the second inlet 2211 on the second sleeve assembly 220, so that the fuel gas and the mixed gas are mixed again in the first mixing chamber 250, and then are ejected and combusted by the first mixing chamber 250.
Fuel gas with different mixing degrees enters through the first inlet 2111 and the second inlet 2211 respectively, the total fuel flow of the main combustion stage is controlled to be unchanged, the flow of the mixed gas entering from the first inlet 2111 is adjusted, the flow of the mixed gas entering from the second inlet 2211 is adjusted, linkage adjustment of the fuel flow is achieved, namely the proportion of the fuel gas contained in the mixed gas entering from the first inlet 2111 and the fuel gas entering from the second inlet 2211 is adjusted, the premixing degree of the main combustion stage premixing combustion can be adjusted in real time, large-range adjustment of the premixing degree of the main combustion stage fuel is achieved, the change of the fuel flow entering from the second inlet 2211 can be monitored in real time, and the premixing degree of the main combustion stage fuel meeting requirements can be achieved by changing the proportion of the mixed gas 2111 entering from the first inlet and the fuel gas entering from the second inlet 2211 in the experimental process.
When the fuel gas that first import 2111 got into is more, then reactant degree of premixing is high, when the fuel gas that second import 2211 got into is more, then reactant degree of premixing is low, and different reactant degree of premixing can bring different combustion effects to pollution degree and combustion performance when influencing the burning. The invention realizes active control of combustion performance and avoids unstable combustion while ensuring low-pollution combustion. Meanwhile, the sleeve component is provided with the inlet, the fuel channel is formed by matching, the head structure of the combustion chamber is constructed into the head part of the main combustion stage premixing degree adjustable central grading cyclone combustion chamber, and the burner head is simple in structure, convenient to assemble, beneficial to processing and low in processing cost.
In this embodiment, the outer wall of the first sleeve assembly 210 is uniformly provided with four first inlet ports 2111 along the circumferential direction thereof, the mixed gas enters the first gas collecting chamber 230 from the first inlet ports 2111 along the radial direction of the first sleeve assembly 210, the outer wall of the second sleeve assembly 220 is uniformly provided with four second inlet ports 2211 along the circumferential direction thereof, and the fuel gas enters the second gas collecting chamber 240 from the second inlet ports 2211 along the radial direction of the second sleeve assembly 220, so as to ensure the uniformity of the inlet gas upstream and downstream of the main combustion stage device 200. In other embodiments, the number and the caliber of the first inlet 2111 and the second inlet 2211 can be set according to actual needs.
According to an embodiment of the present invention, the first sleeve assembly 210 comprises a first sleeve 211 and a second sleeve 212 sequentially arranged along a gas flow direction in the pre-combustion stage apparatus 100, the first sleeve 211 and the second sleeve 212 are coaxially connected, and the first inlet 2111 is arranged on the first sleeve 211. In this embodiment, the first sleeve assembly 210 is a first sleeve 211 and a second sleeve 212 that are coaxially connected, the inner walls of the first sleeve 211 and the second sleeve 212 and the outer wall of the pre-combustion stage device 100 together form a first gas collecting chamber 230, one end of the second sleeve 212 is connected to the first sleeve 211, and the other end is connected to the second sleeve assembly 220. The mixed gas enters the first sleeve 211 through the first inlet 2111, circulates along the first gas collecting chamber 230, passes through the second sleeve 212, and enters the first mixing chamber 250 of the second sleeve assembly 220.
In this embodiment, the first sleeve 211 and the second sleeve 212 are in a split combination form and are connected through a flange structure and a fastener, so that the overall length of the first gas collecting cavity 230 is conveniently controlled, the flow path of the mixed gas is adjusted, the requirements of different path lengths are matched, the requirements of head structures of combustion chambers with different sizes are met, and the disassembly, assembly, maintenance and replacement are convenient. The first sleeve 211 is connected to the pre-stage device 100 by a seal-welded cover plate 500. In other embodiments, the first sleeve assembly 210 may also be directly connected to the second sleeve assembly 220 using a single sleeve having a length.
According to an embodiment of the present invention, the second sleeve assembly 220 includes a third sleeve 221 and a fourth sleeve 222, the third sleeve 221 is sleeved outside the fourth sleeve 222, a second gas collecting chamber 240 is formed between the third sleeve 221 and the fourth sleeve 222, the third sleeve 221 is provided with a second inlet 2211 communicated with the second gas collecting chamber 240, the fourth sleeve 222 is sleeved outside the pre-combustion stage device 100, a first mixing chamber 250 is formed between the fourth sleeve 222 and the pre-combustion stage device 100, and the fourth sleeve 222 is provided with a third inlet 2221 adapted to communicate the first mixing chamber 250 and the second gas collecting chamber 240. In this embodiment, the second sleeve assembly 220 is a third sleeve 221 and a fourth sleeve 222 that are coaxially disposed and sequentially sleeved from outside to inside, a second inlet 2211 air cavity is formed between the inner wall of the third sleeve 221 and the outer wall of the fourth sleeve 222, and a first mixing cavity 250 is formed between the inner wall of the fourth sleeve 222 and the outer wall of the pre-combustion stage device 100. The fourth sleeve 222 is connected to the second sleeve 212, and the mixed gas enters the first sleeve 211 through the first inlet 2111, circulates along the first gas collecting chamber 230, passes through the second sleeve 212, and enters the first mixing chamber 250 of the fourth sleeve 222. After entering the third sleeve 221 through the second inlet 2211, the fuel gas circulates along the second gas collecting chamber 240 and enters the first mixing chamber 250 of the fourth sleeve 222 through the third inlet 2221, so as to be mixed with the mixed gas in the first mixing chamber 250.
In this embodiment, the outer wall of the fourth sleeve 222 is uniformly provided with a plurality of third inlets 2221 along the circumferential direction thereof, the fuel gas enters the first mixing cavity 250 from the third inlets 2221 along the radial direction of the fourth sleeve 222, so as to ensure the intake uniformity of the downstream of the main combustion stage device 200, meanwhile, the aperture of the third inlets 2221 is far smaller than the aperture of the second inlets 2211, and the number of the third inlets 2221 is far greater than the number of the second inlets 2211, so as to ensure that the fuel gas reaches a certain pressure when entering the first mixing cavity 250 from the second gas collecting cavity 240, and enters in a spraying state, thereby improving the mixing effect of the fuel gas and the mixed gas. In other embodiments, the number, the caliber, etc. of the third inlets 2221 can be set according to actual needs.
In this embodiment, the split combination of the third sleeve 221 and the fourth sleeve 222 facilitates the centralized supply of the fuel gas, simplifies the structure of the supply pipeline, and adjusts the flow path of the fuel gas, so as to meet the requirements of different sizes of the second gas collecting chamber 240 and the head structure of the combustion chamber, and the fourth sleeve 222 is in threaded connection with the second sleeve 212, thereby facilitating the disassembly, assembly, repair and replacement. In other embodiments, the second sleeve member 220 may also employ a single sleeve having a number of third inlets 2221.
According to an embodiment of the present invention, the second sleeve 212 is provided with a first pressure sensor for detecting the pressure of the first gas collecting chamber 230. In this embodiment, the second sleeve 212 is provided with the first pressure sensor for detecting the pressure of the first gas collecting chamber 230, and a main portion of the first gas collecting chamber 230 is concentrated in the second sleeve 212, so that when the first pressure sensor is provided on the second sleeve 212 to detect the pressure, the first pressure sensor is not interfered by the first inlet 2111 of the first sleeve 211, thereby ensuring the accuracy of the detection result. The first pressure sensor may be a dynamic pressure sensor, thereby enabling real-time detection of the pulsation and pressure changes in the fuel flow upstream of the main combustion stage assembly 200.
In this embodiment, the second sleeve 212 is provided with an air hole, and a first mounting base 310 for mounting the first pressure sensor is disposed at the air hole.
According to an embodiment of the present invention, a second pressure sensor for detecting the pressure of the second gas collecting chamber 240 is disposed on the third sleeve 221. In this embodiment, the third sleeve 221 is provided with a second pressure sensor for detecting the pressure of the second gas collecting cavity 240, and the third sleeve 221 and the fourth sleeve 222 are nested inside and outside, so that the second pressure sensor is provided on the third sleeve 221 located outside, which is convenient to install. The second pressure sensor may be a dynamic pressure sensor, thereby enabling real-time detection of pulsation and pressure changes in the fuel flow downstream of the main combustion stage assembly 200.
In this embodiment, the third sleeve 221 is provided with an air hole, and a second mounting base 320 for mounting the second pressure sensor is disposed at the air hole.
As shown in fig. 5, according to an embodiment provided by the present invention, the main combustion stage device 200 further includes a first uniform flow member 260 and a second uniform flow member 270, and the first uniform flow member 260 and the second uniform flow member 270 are sequentially disposed in the first gas collecting chamber 230 along the flowing direction of the mixed gas in the first gas collecting chamber 230. In this embodiment, the mixed gas enters the first gas collecting cavity 230 through the first inlet 2111, then sequentially flows through the first flow uniforming member 260 and the second flow uniforming member 270, and then enters the first mixing cavity 250. The first flow uniformizing part 260 and the second flow uniformizing part 270 are both annular plates with a certain thickness, through holes penetrating along the thickness direction of the annular plates are uniformly distributed on the annular plates, the inner circumferential surfaces of the annular plates are in contact with the outer wall of the pre-combustion stage device 100, and the outer circumferential surfaces of the annular plates are in contact with the inner wall of the first sleeve component 210. The mixed gas can be effectively and uniformly dispersed after passing through the through holes of the first flow-homogenizing member 260 and the through holes of the second flow-homogenizing member 270 in sequence.
In this embodiment, the first flow-homogenizing member 260 is disposed in the first sleeve 211, the second flow-homogenizing member 270 is disposed at a connection position of the first sleeve 211 and the second sleeve, through holes of the first flow-homogenizing member 260 are larger than through holes of the second flow-homogenizing member 270, and the number and density of the through holes of the second flow-homogenizing member 270 are both larger than those of the through holes of the first flow-homogenizing member 260. Through the setting of first even flow piece 260 and second even flow piece 270, carry out the even flow of second grade dispersion to the mist in the main burning stage passageway, make the mist get into first mixing chamber 250 with even distribution and unanimous velocity of flow and mix with fuel gas, improve the mixing effect. In other embodiments, the first uniform flow piece 260 and the second uniform flow piece 270 may adopt other uniform flow structures, and the first gas collecting cavity 230 is not limited to be provided with only two stages of dispersed uniform flows.
According to an embodiment of the present invention, the pre-combustion stage device 100 includes a nozzle 110, and a third sleeve 221 assembly 120 and a fourth sleeve 222 assembly 130 sequentially arranged along a gas flow direction in the main combustion stage device 200, the third sleeve 221 assembly 120 is sleeved outside the nozzle 110, a third gas collecting chamber 140 is formed between the third sleeve 221 assembly 120 and the nozzle 110, the third sleeve 221 assembly 120 is provided with a fourth inlet 1211 communicated with the third gas collecting chamber 140, and the fourth inlet 1211 is suitable for introducing air; the fourth sleeve 222 assembly 130 and the nozzle 110 form a second mixing chamber 150 therebetween, the second mixing chamber 150 is communicated with the third plenum 140, the nozzle 110 is provided with a fifth inlet 111 communicated with the second mixing chamber 150, and the fifth inlet 111 is adapted to inject fuel gas. In this embodiment, the third sleeve 221 assembly 120 is used as an upstream assembly of the pre-combustion stage device 100, and the third plenum 140 formed between the third sleeve and the nozzle 110 is an upstream plenum of the pre-combustion stage channel; the fourth sleeve 222 assembly 130 is used as a downstream component of the pre-stage device 100, and a second mixing chamber 150 formed between the fourth sleeve 130 assembly and the nozzle 110 is a downstream gas collecting chamber of the pre-stage passage, and an outlet of the second mixing chamber 150 is a combustion end of the pre-stage device 100.
One path of the pre-combustion stage channel is air entering the third air collecting chamber 140 through the fourth inlet 1211 on the third sleeve 221 assembly 120, and then entering the second mixing chamber 150 in the fourth sleeve 222 assembly 130 through the third air collecting chamber 140, and the other path is fuel gas entering the second mixing chamber 150 in the fourth sleeve 222 assembly 130 through the fifth inlet 111 of the nozzle 110, so that the fuel gas and the air are mixed in the second mixing chamber 150, and then are sprayed out and combusted through the second mixing chamber 150.
In this embodiment, the outer wall of the third sleeve 221 assembly 120 is uniformly provided with four fourth inlets 1211 along the circumferential direction, air enters the second air collecting chamber 240 from the fourth inlets 1211 along the radial direction of the third sleeve 221 assembly 120, the end of the nozzle 110 close to the fourth sleeve 222 assembly 130 is uniformly provided with four fifth inlets 111 along the circumferential direction, the fifth inlets 111 are arranged in an inclined and radial manner, and fuel gas enters the flow through the nozzle 110 and is injected into the second mixing chamber 150 from the fifth inlets 111, so as to ensure the uniformity of the air intake upstream and downstream of the pre-combustion stage device 100. In other embodiments, the number, caliber size, etc. of the fourth inlet 1211 and the fifth inlet 111 can be set according to actual requirements.
In this embodiment, the aperture of the fifth inlet 111 is smaller, and the radial distribution enables the fuel gas to be injected into the second mixing chamber 150 at a certain angle, so as to improve the flow rate of the fuel gas and ensure the mixing effect of the fuel gas and air while uniformly dispersing the fuel gas.
In one embodiment, the third sleeve 221 assembly 120 is formed by coaxially connecting the fifth sleeve 121 and the sixth sleeve 122, the inner walls of the fifth sleeve 121 and the sixth sleeve 122 and the outer wall of the nozzle 110 together form the third plenum 140, and the outer wall of the sixth sleeve 122 and the inner wall of the first sleeve assembly 210 together form the first plenum 230. One end of the sixth sleeve 122 is connected to the fifth sleeve 121 and the other end is connected to the fourth sleeve 222 assembly 130. After entering the fifth sleeve 121 through the fourth inlet 1211, the air circulates along the third air collecting chamber 140, passes through the sixth sleeve 122, and enters the second mixing chamber 150 of the fourth sleeve 222 assembly 130. The inner circumferential surfaces of the first flow uniforming member 260 and the second flow uniforming member 270 are in contact with the outer wall of the sixth sleeve 122.
In this embodiment, the split combination of the fifth sleeve 121 and the sixth sleeve 122 facilitates controlling the overall length of the third gas collecting chamber 140 and adjusting the flow path of air, so as to meet the requirements of different path lengths and the requirements of head structures of combustion chambers of different sizes, and meanwhile, the fifth sleeve 121 and the sixth sleeve 122 are in threaded connection, which facilitates disassembly, assembly, repair and replacement. In other embodiments, the third sleeve 221 assembly 120 may also be connected directly to the fourth sleeve 222 assembly 130 using a single sleeve having a length.
In one embodiment, the fourth sleeve 222 assembly 130 is a seventh sleeve 131, the second mixing chamber 150 is formed between an inner wall of the seventh sleeve 131 and an outer wall of the nozzle 110, and the first mixing chamber 250 is formed between an outer wall of the seventh sleeve 131 and an inner wall of the fourth sleeve 222. The seventh sleeve 131 is connected to the sixth sleeve 122, and the air enters the fifth sleeve 121 through the fourth inlet 1211, circulates along the third air collecting chamber 140, passes through the sixth sleeve 122, and enters the second mixing chamber 150 of the second air sleeve. After being ejected from the fifth inlet 111 of the nozzle 110, the fuel gas enters the second mixing chamber 150 of the seventh sleeve 131, so as to be mixed with the air in the second mixing chamber 150.
In this embodiment, the seventh sleeve 131 is connected to the sixth sleeve 122 by a screw thread, so as to facilitate disassembly, assembly, repair and replacement. In other embodiments, the fourth sleeve 222 assembly 130 may also be a plurality of split sleeves.
According to an embodiment provided by the invention, the pre-stage device 100 further comprises a third uniform flow member 160 and a fourth uniform flow member 170, and the third uniform flow member 160 and the fourth uniform flow member 170 are sequentially arranged in the third gas collecting chamber 140 along the air flowing direction in the third gas collecting chamber 140. In this embodiment, after entering the third air collecting chamber 140 through the fourth inlet 1211, the air passes through the third flow uniforming member 160 and the fourth flow uniforming member 170 in sequence, and then enters the second mixing chamber 150. The third flow uniforming member 160 and the fourth flow uniforming member 170 are both annular plates with a certain thickness, through holes penetrating along the thickness direction are uniformly distributed on the annular plates, the inner circumferential surface of the annular plates is in contact with the outer wall of the spray pipe 110, and the outer circumferential surface of the annular plates is in contact with the inner wall of the fifth sleeve 121. The mixed gas can be effectively and uniformly dispersed after passing through the through holes of the third flow-homogenizing member 160 and the fourth flow-homogenizing member 170 in sequence.
In this embodiment, the third flow-homogenizing member 160 and the fourth flow-homogenizing member 170 are both disposed in the fifth sleeve 121, the through holes of the third flow-homogenizing member 160 are larger than the through holes of the fourth flow-homogenizing member 170, and the number and density of the through holes of the fourth flow-homogenizing member 170 are both larger than the through holes of the third flow-homogenizing member 160. Through the arrangement of the third uniform flow member 160 and the fourth uniform flow member 170, the air is subjected to secondary dispersion uniform flow in the pre-combustion stage channel, so that the air enters the second mixing cavity 150 with uniform distribution and uniform flow velocity to be mixed with the fuel gas, and the mixing effect is improved. In other embodiments, the third flow distribution member 160 and the fourth flow distribution member 170 may adopt other flow distribution structures, and the third gas collecting chamber 140 is not limited to be provided with only two stages of dispersed flow distribution.
As shown in fig. 3 and 4, according to an embodiment of the present invention, the main stage device 200 further includes a first cyclone member 280, and the first cyclone member 280 is disposed between the first gas collecting chamber 230 and the first mixing chamber 250. In this embodiment, the first swirling element 280 is disposed in the third sleeve 221, and the first swirling element 280 is sleeved outside the sixth sleeve 122 and is located between the sixth sleeve 122 and the seventh sleeve 131. The first cyclone 280 divides the interior of the third sleeve 221 into two parts, one part is a first transition chamber, and the other part is a first mixing chamber 250, i.e. the first gas collecting chamber 230 is communicated with the first mixing chamber 250 through the first transition chamber. The mixed gas may enter the first mixing chamber 250 from the first transition chamber through the first swirl member 280, and the first swirl member 280 may be rotated to form a spiral shape to the flame emitted from the main stage apparatus 200. The third inlet 2221 is located at the portion of the fourth sleeve 222 where the first mixing chamber 250 is located, and the flame of the main combustion stage device 200 at the combustion end only reaches the position of the third inlet 2221, and cannot reach the inner side of the fourth sleeve 222, so that the flame cannot burn to the first swirling elements 280.
In this embodiment, the first swirling flow element 280 is sleeved, and the first swirling flow element 280 may be a swirling flow vane, so that the main combustion stage swirler is convenient to disassemble and replace. In other embodiments, can install according to the swirler of the different swirl numbers of actual demand design, be convenient for adjust the flame structure, the variability of structure is strong.
According to one embodiment of the present invention, the pre-combustion stage device 100 further includes a second cyclone member 180, and the second cyclone member 180 is disposed in the third gas collecting chamber 140. In this embodiment, the second swirling element 180 is disposed in the sixth sleeve 122, and is disposed corresponding to the first swirling element 280, and the second swirling element 180 is sleeved outside the nozzle 110. The second cyclone 180 divides the interior of the sixth sleeve 122 into two parts, one part is the third plenum 140, and the other part is the second transition chamber, i.e., the third plenum 140 communicates with the second mixing chamber 150 through the second transition chamber. The mixed gas can enter the second transition chamber from the third gas collecting chamber 140 through the second cyclone piece 180, and the second cyclone piece 180 can rotate to form the flame sprayed by the pre-combustion stage device 100 into a spiral shape. The flame of the pre-stage device 100 at the combustion end only reaches the second mixing chamber 150, and the flame cannot reach the second transition chamber, i.e. does not enter the interior of the sixth sleeve 122, and therefore does not burn to the second swirling member 180.
In this embodiment, the second swirling component 180 is sleeved, and the second swirling component 180 can be a swirling vane, so that the pre-combustion stage swirler can be conveniently detached and replaced. In other embodiments, can install according to the swirler of the different swirl numbers of actual demand design, be convenient for adjust the flame structure, the variability of structure is strong.
In one embodiment, the combustion chamber head structure of the present invention further comprises a mounting 400, and the third sleeve 221 and the fourth sleeve 222 are mounted on the mounting 400 for fixedly supporting the entire combustion chamber head structure.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A combustion chamber head structure characterized by: the pre-combustion-stage device comprises a pre-combustion-stage device and a main combustion-stage device, wherein the main combustion-stage device is sleeved outside the pre-combustion-stage device and comprises a first sleeve component and a second sleeve component which are sequentially arranged along the gas flow direction in the pre-combustion-stage device, a first gas collecting cavity is formed between the first sleeve component and the pre-combustion-stage device, the first sleeve component is provided with a first inlet communicated with the first gas collecting cavity, and the first inlet is suitable for introducing mixed gas formed by mixing air and fuel gas; a first mixing cavity is formed between the second sleeve component and the precombustion stage device and is communicated with the first gas collecting cavity, a second inlet communicated with the first mixing cavity is formed in the second sleeve component, and the second inlet is suitable for introducing fuel.
2. The combustion chamber head structure as set forth in claim 1, wherein: the first sleeve assembly comprises a first sleeve and a second sleeve which are sequentially arranged along the gas flow direction in the pre-burning stage device, the first sleeve is coaxially connected with the second sleeve, and the first inlet is formed in the first sleeve.
3. The combustion chamber head structure as set forth in claim 1, wherein: the second sleeve component comprises a third sleeve and a fourth sleeve, the third sleeve is sleeved on the outer side of the fourth sleeve, a second gas collecting cavity is formed between the third sleeve and the fourth sleeve, the third sleeve is provided with a second inlet communicated with the second gas collecting cavity, the fourth sleeve is sleeved on the outer side of the precombustion stage device, the fourth sleeve and the precombustion stage device form a first mixing cavity, and the fourth sleeve is provided with a third inlet communicated with the first mixing cavity and the second gas collecting cavity.
4. The combustion chamber head structure according to claim 2, wherein: and a first pressure sensor for detecting the pressure of the first gas collecting cavity is arranged on the second sleeve.
5. The combustion chamber head structure as set forth in claim 3, wherein: and a second pressure sensor for detecting the pressure of the second gas collecting cavity is arranged on the third sleeve.
6. The combustion chamber head structure as set forth in claim 1, wherein: the main combustion stage device further comprises a first flow homogenizing piece and a second flow homogenizing piece, and the first flow homogenizing piece and the second flow homogenizing piece are sequentially arranged in the first gas collecting cavity along the flowing direction of mixed gas in the first gas collecting cavity.
7. The combustion chamber head structure as set forth in claim 1, wherein: the pre-combustion stage device comprises a spray pipe, and a third sleeve assembly and a fourth sleeve assembly which are sequentially arranged along the gas flow direction in the main combustion stage device, the third sleeve assembly is sleeved outside the spray pipe, a third gas collecting cavity is formed between the third sleeve assembly and the spray pipe, the third sleeve assembly is provided with a fourth inlet communicated with the third gas collecting cavity, and the fourth inlet is suitable for introducing air; a second mixing cavity is formed between the fourth sleeve assembly and the spray pipe, the second mixing cavity is communicated with the third gas collecting cavity, the spray pipe is provided with a fifth inlet communicated with the second mixing cavity, and the fifth inlet is suitable for spraying fuel gas.
8. The combustion chamber head structure as set forth in claim 7, wherein: the precombustion stage device also comprises a third flow-homogenizing piece and a fourth flow-homogenizing piece, and the third flow-homogenizing piece and the fourth flow-homogenizing piece are sequentially arranged in the third gas-collecting cavity along the air flowing direction in the third gas-collecting cavity.
9. The combustion chamber head structure according to any one of claims 1 to 8, wherein: the main combustion stage device also comprises a first rotational flow piece, and the first rotational flow piece is arranged between the first gas collecting cavity and the first mixing cavity.
10. The combustion chamber head structure as set forth in claim 7, wherein: the precombustion stage device also comprises a second rotational flow piece, and the second rotational flow piece is arranged in the third gas collecting cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210088624.8A CN114484499B (en) | 2022-01-25 | 2022-01-25 | Head structure of combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210088624.8A CN114484499B (en) | 2022-01-25 | 2022-01-25 | Head structure of combustion chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114484499A true CN114484499A (en) | 2022-05-13 |
| CN114484499B CN114484499B (en) | 2023-02-17 |
Family
ID=81473943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210088624.8A Active CN114484499B (en) | 2022-01-25 | 2022-01-25 | Head structure of combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114484499B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754378A (en) * | 2022-06-13 | 2022-07-15 | 成都中科翼能科技有限公司 | Gas turbine combustor structure |
| CN115854385A (en) * | 2023-01-04 | 2023-03-28 | 哈尔滨工程大学 | Combustor head structure capable of adjusting nozzle position |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174338A (en) * | 2010-12-31 | 2011-09-07 | 中国航天科技集团公司第六研究院第十一研究所 | Low-flow, high-mixing ratio and stepless regulation gas-liquid mixing gas generator |
| CH707768A2 (en) * | 2013-03-15 | 2014-09-15 | Gen Electric | Gas turbine with downstream fuel and air injection. |
| CN109737453A (en) * | 2019-01-23 | 2019-05-10 | 南方科技大学 | A kind of main combustion stage uses the low emission combustor of two stage vertical blending |
| CN110318860A (en) * | 2019-06-26 | 2019-10-11 | 哈尔滨工程大学 | A kind of marine large-diameter natural gas engine combustion system of multistage fuel gas injection |
| CN110529878A (en) * | 2019-07-31 | 2019-12-03 | 中国航发南方工业有限公司 | Multiple fuel system |
| CN111425294A (en) * | 2019-01-10 | 2020-07-17 | 中国航发商用航空发动机有限责任公司 | Fuel oil grading device, engine combustion chamber and aircraft engine |
| CN113932253A (en) * | 2020-06-29 | 2022-01-14 | 中国航发商用航空发动机有限责任公司 | Combustion chamber head, combustion chamber, gas turbine engine, and combustion control method |
-
2022
- 2022-01-25 CN CN202210088624.8A patent/CN114484499B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174338A (en) * | 2010-12-31 | 2011-09-07 | 中国航天科技集团公司第六研究院第十一研究所 | Low-flow, high-mixing ratio and stepless regulation gas-liquid mixing gas generator |
| CH707768A2 (en) * | 2013-03-15 | 2014-09-15 | Gen Electric | Gas turbine with downstream fuel and air injection. |
| US20140260269A1 (en) * | 2013-03-15 | 2014-09-18 | General Electric Company | Systems and apparatus relating to downstream fuel and air injection in gas turbines |
| CN111425294A (en) * | 2019-01-10 | 2020-07-17 | 中国航发商用航空发动机有限责任公司 | Fuel oil grading device, engine combustion chamber and aircraft engine |
| CN109737453A (en) * | 2019-01-23 | 2019-05-10 | 南方科技大学 | A kind of main combustion stage uses the low emission combustor of two stage vertical blending |
| CN110318860A (en) * | 2019-06-26 | 2019-10-11 | 哈尔滨工程大学 | A kind of marine large-diameter natural gas engine combustion system of multistage fuel gas injection |
| CN110529878A (en) * | 2019-07-31 | 2019-12-03 | 中国航发南方工业有限公司 | Multiple fuel system |
| CN113932253A (en) * | 2020-06-29 | 2022-01-14 | 中国航发商用航空发动机有限责任公司 | Combustion chamber head, combustion chamber, gas turbine engine, and combustion control method |
Non-Patent Citations (1)
| Title |
|---|
| 吴鑫楠等: "二次燃料喷射对燃气轮机中低热值燃烧室性能的影响", 《燃气轮机技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754378A (en) * | 2022-06-13 | 2022-07-15 | 成都中科翼能科技有限公司 | Gas turbine combustor structure |
| CN114754378B (en) * | 2022-06-13 | 2022-08-19 | 成都中科翼能科技有限公司 | Gas turbine combustor structure |
| CN115854385A (en) * | 2023-01-04 | 2023-03-28 | 哈尔滨工程大学 | Combustor head structure capable of adjusting nozzle position |
| CN115854385B (en) * | 2023-01-04 | 2023-07-14 | 哈尔滨工程大学 | Combustion chamber head structure with adjustable nozzle position |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114484499B (en) | 2023-02-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2766102C1 (en) | Combustion chamber with a low contamination level and method for combustion control therefor | |
| CN114484499B (en) | Head structure of combustion chamber | |
| US7757491B2 (en) | Fuel nozzle for a gas turbine engine and method for fabricating the same | |
| US6453660B1 (en) | Combustor mixer having plasma generating nozzle | |
| US7908863B2 (en) | Fuel nozzle for a gas turbine engine and method for fabricating the same | |
| US6722132B2 (en) | Fully premixed secondary fuel nozzle with improved stability and dual fuel capability | |
| CA1289756C (en) | Bimodal swirler injector for a gas turbine combustor | |
| JP5400632B2 (en) | Insertable pre-perforated swirl vanes for premix fuel nozzles | |
| US20040006993A1 (en) | Dual fuel fin mixer secondary fuel nozzle | |
| US20100089066A1 (en) | Cool flame combustion | |
| US20040006989A1 (en) | Fully premixed secondary fuel nozzle with dual fuel capability | |
| CN108844068B (en) | Full-premix surface type burner gas-air blender | |
| CN101158479A (en) | Liquid fuel enhancement for natural gas swirl stabilized nozzle and method | |
| GB2179435A (en) | Gap-turbine carburetter | |
| CN113324262A (en) | Coaxial staged gas fuel combustor head for low emission gas turbine | |
| WO2023273305A1 (en) | Center-staged combustion chamber based on self-excitation sweep oscillation fuel nozzles | |
| CN109708148B (en) | Gas turbine combustor doublestage radial swirler | |
| RU2456510C1 (en) | Continuous-action combustion chamber | |
| CN103277815B (en) | Lean oil portion pre-mixing pre-evaporation homogenizing oil feeding device | |
| CN215951499U (en) | Lean oil premixing and pre-evaporating combustion chamber and aircraft engine | |
| CN115451431A (en) | Fuel nozzle premixing system for combustion chamber of gas turbine | |
| CN112228904B (en) | Lean oil premixing flame tube air inlet structure | |
| RU2347144C1 (en) | Annular combustion chamber of gas turbine engine and method of its operation | |
| CN211424472U (en) | Combustor head device and gas turbine | |
| CN115218217B (en) | Main combustion stage head of central staged combustion chamber adopting porous multi-angle oil injection ring structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |