CN116106020B - Fixing frame for measuring frequency of combustion chamber of gas turbine - Google Patents
Fixing frame for measuring frequency of combustion chamber of gas turbine Download PDFInfo
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- CN116106020B CN116106020B CN202310098453.1A CN202310098453A CN116106020B CN 116106020 B CN116106020 B CN 116106020B CN 202310098453 A CN202310098453 A CN 202310098453A CN 116106020 B CN116106020 B CN 116106020B
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- combustion chamber
- transition section
- frequency
- gas turbine
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/12—Testing internal-combustion engines by monitoring vibrations
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Testing Of Engines (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
The invention provides a fixing frame for measuring the frequency of a combustion chamber of a gas turbine, and relates to the technical field of gas turbines. The device comprises a bracket, a fixed seat and an annular fixed plate; the middle part of the bracket is provided with a supporting seat which is provided with a first connecting part; the fixed seat is arranged at the bottom of the bracket and is provided with a second connecting part which is detachably matched with the transition section of the combustion chamber; the annular fixed plate is arranged on the supporting seat and is provided with a third connecting part which is detachably matched with the first connecting part, and the annular fixed plate is configured to be sleeved at the top of the transition section of the combustion chamber and limit tangential movement of the transition section of the combustion chamber. According to the invention, the flame tube and the transition section can be fixedly supported, the external frequency measurement unit is utilized to perform static frequency test on the flame tube and the transition section in an assembly state, and combustion is adjusted according to a static frequency test result in a combustion chamber operation state, so that combustion pulsation frequency avoids natural frequencies of the flame tube and the transition section, and safe operation of the combustion chamber is realized.
Description
Technical Field
The invention relates to the technical field of gas turbines, in particular to a fixing frame for measuring frequency of a combustion chamber of a gas turbine.
Background
The combustion chamber is used as one of three core structures of the gas turbine, and has the function of converting chemical energy of fuel into heat energy of high-temperature fuel gas to form fuel gas with temperature and temperature field meeting requirements, and then the fuel gas is sent to the turbine to do work.
The combustion chamber is generally composed of a shell, a flame tube, a transition section and the like in structure, wherein the flame tube and the transition section are core components of the combustion chamber of the gas turbine, fuel is combusted in the flame tube, large-amplitude pressure pulsation occurs due to unstable combustion, the pressure pulsation belongs to external exciting force relative to the flame tube and the transition section, the combustion process is basically the process that the external exciting force continuously excites the flame tube and the transition section of the combustion chamber, and when the combustion exciting frequency is in time with the natural frequency of the flame tube and the transition section in an assembling state, the flame tube and the transition section are subjected to structural resonance, so that structural damage is caused, and the service life of the combustion chamber is seriously influenced.
Disclosure of Invention
The invention aims to provide a fixing frame for measuring the frequency of a combustion chamber of a gas turbine, which is used for solving the problem that the service life is influenced due to resonance of a flame tube and a transition section structure.
In order to solve the problems, the invention firstly provides a fixing frame for measuring the frequency of a combustion chamber of a gas turbine, which comprises a bracket, a fixing seat and an annular fixing plate; the bracket is configured to accommodate the combustion chamber, and is provided with a supporting seat in the middle part thereof, and the supporting seat is provided with a first connecting part; the fixed seat is arranged at the bottom of the bracket and is provided with a second connecting part which is detachably matched with the transition section of the combustion chamber; the annular fixing plate is arranged on the supporting seat and is provided with a third connecting part which is detachably matched with the first connecting part, and the annular fixing plate is configured to be sleeved at the top of the transition section of the combustion chamber and limit tangential movement of the transition section.
By adopting the technical scheme, the flame tube and the transition section of the combustion chamber are fixedly supported through the support, the fixing seat and the annular fixing plate, then the external frequency measuring unit is utilized to carry out the static frequency test on the flame tube and the transition section in the assembly state, and in the operation state of the combustion chamber, the combustion is adjusted according to the static frequency test result, so that the combustion pulsation frequency avoids the natural frequencies of the flame tube and the transition section, and the safe operation of the combustion chamber is realized.
Further, the bracket comprises a top plate, a support rod and a bottom plate which are sequentially connected from top to bottom; the top plate is configured to support the combustion chamber head, the support base is connected to the support rod, and the fixing base is mounted on the bottom plate.
By adopting the technical scheme, the top plate of the bracket is designed to support the head of the combustion chamber, so that the combustion chamber is fixed on the frequency measuring device and then can better simulate the real assembly state, and the accuracy of static frequency detection is ensured.
Further, the number of the supporting rods is multiple, the supporting rods are arranged between the top plate and the bottom plate at intervals along the circumferential direction, and the radian of the outer contour surrounded by the supporting rods is smaller than or equal to 180 degrees.
By adopting the technical scheme, through the design of laying the supporting rod, the supporting strength can be ensured, the weight of the device is reduced, one side of the combustion chamber after being installed and fixed can be prevented from being shielded by the supporting rod, and the follow-up static frequency detection is further facilitated.
Further, the top plate and/or the bottom plate are/is an arc-shaped plate, and the radian of the arc-shaped plate is less than or equal to 180 degrees.
By adopting the technical scheme, the top plate and the bottom plate are designed into the arc-shaped plates, so that the combustion chamber can be better matched with the combustion chamber, and shielding to the surface of the combustion chamber can be reduced.
Further, the first connecting portion is one of a hole and a groove, the third connecting portion is a hole, and the first connecting portion and the third connecting portion are detachably connected through a first connecting piece.
By adopting the technical scheme, the first connecting piece is connected with the hole and the hole/groove in a butt joint mode, the structure is simple, and the assembly is easy.
Further, the second connecting portion is one of a hole and a groove, holes are formed in the periphery of the transition section of the combustion chamber, and the second connecting portion and the transition section of the combustion chamber are detachably connected through a second connecting piece.
By adopting the technical scheme, the second connecting piece is connected with the hole and the hole/groove in a butt joint mode, the structure is simple, and the assembly is easy.
Further, the fixing seat comprises two side walls and a top wall connected between the two side walls, and the top wall is provided with an installation opening matched with the shape and the size of the bottom of the transition section of the combustion chamber.
By adopting the technical scheme, when the combustion chamber is assembled, the bottom of the transition section can be provided with the installation opening, so that the transition section can be better stabilized.
Further, the top wall is obliquely arranged on the two side walls.
By adopting the technical scheme, the top wall is designed to be of an inclined structure, so that the bottom of the transition section is convenient to be installed.
Further, the inner edge of the annular fixed plate is provided with a first guiding and limiting part, and the top of the transition section of the combustion chamber is provided with a second guiding and limiting part matched with the first guiding and limiting part.
By adopting the technical scheme, the positioning assembly of the annular fixing plate is convenient through the cooperation of the first guiding limiting part and the second guiding limiting part, the tangential limiting of the transition section can be realized, and the structural stability in the frequency measurement process is ensured.
Further, the first guiding limit part comprises a first limit groove, the second guiding limit part comprises a second limit groove and a guiding block detachably connected in the second limit groove, and the guiding block is matched with the first limit groove in size.
By adopting the technical scheme, the positioning assembly is realized through the cooperation of the guide block and the first limit groove, the structure is simple, and the processing is easy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a fixing frame for measuring the frequency of a combustion chamber of a gas turbine according to an embodiment of the present invention;
FIG. 2 is a schematic view of a fixing frame for measuring frequency of a combustion chamber of a gas turbine according to an embodiment of the present invention after assembling the combustion chamber;
FIG. 3 is a schematic view of a transition section of a combustor according to an embodiment of the present invention;
FIG. 4 is a schematic view of a ring-shaped fixing plate of a fixing frame for measuring the frequency of a combustion chamber of a gas turbine according to an embodiment of the present invention;
FIG. 5 is a schematic view of a guide block of a fixing frame for measuring the frequency of a combustion chamber of a gas turbine according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating the cooperation between a guide block and a first limiting groove of a fixing frame for measuring the frequency of a combustion chamber of a gas turbine according to an embodiment of the present invention.
Reference numerals illustrate:
100-bracket; 110-top plate; 120-supporting rods; 130-a bottom plate;
200-supporting seats; 210-a first connection;
300-fixing seat; 310-a second connection; 320-sidewalls; 330-top wall; 331-mounting openings;
400-annular fixing plates; 410-a third connection; 420-a first guiding limit part; 421-a first limit groove;
500-combustor transition section; 510-a second guiding limit part; 511-a second limit groove; 512-guide block; 600-flame tube; 700-combustion chamber head.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In order to avoid the problem that structural resonance occurs when the combustion excitation frequency and the natural frequency of the flame tube and the transition section are in time shooting in an assembly state, and structural damage is caused, the embodiment provides a fixing frame for measuring the combustion chamber frequency of a gas turbine, which aims to detect the static frequency of the assembled flame tube and transition section of the combustion chamber so as to grasp the real situation of the assembled flame tube and transition section, and in the operation state of the combustion chamber, combustion needs to be adjusted according to the frequency measurement result so that the combustion pulsation frequency avoids the natural frequency of the flame tube and the transition section, thereby realizing safe operation of the combustion chamber.
Referring to fig. 1 and 2, the fixing frame for measuring frequency of combustion chamber of a gas turbine provided in this embodiment mainly includes a bracket 100, a fixing seat 300 and an annular fixing plate 400, where the fixing frame of this embodiment cooperates with an external existing frequency measuring unit (not shown in the figure) to realize frequency measurement, and the frequency measuring unit of this embodiment is located outside the bracket 100 and is used for measuring static frequency of combustion chamber located on the bracket 100.
The support 100 of the present embodiment is configured to accommodate a combustion chamber, a specific structural form of the support 100 is given in the following, a support seat 200 is provided in the middle of the support 100, and the support seat 200 of the present embodiment is provided with a first connection portion 210.
The fixing base 300 of the present embodiment is installed at the bottom of the bracket 100, and the fixing base 300 is provided with a second connecting portion 310 detachably matched with the combustor transition section 500. The annular fixing plate 400 of the present embodiment is mounted on the supporting seat 200 and provided with the third connecting portion 410 detachably matched with the first connecting portion 210, and the annular fixing plate 400 of the present embodiment is configured to be sleeved on top of the combustor transition section 500 and can limit the movement of the combustor transition section 500 along the tangential direction thereof.
As can be seen from the above description, the frequency measurement device provided in this embodiment fixedly supports the flame tube 600 and the combustor transition section 500 of the combustion chamber through the bracket 100, the fixing base 300 and the annular fixing plate 400, and performs the static frequency test on the flame tube 600 and the combustor transition section 500 in the assembled state by using the frequency measurement unit, and adjusts the combustion according to the static frequency test result in the operating state of the combustion chamber, so that the combustion pulsation frequency avoids the natural frequencies of the flame tube 600 and the combustor transition section 500, thereby realizing the safe operation of the combustion chamber.
Referring to fig. 2, the bracket 100 of the present embodiment includes a top plate 110, a support rod 120 and a bottom plate 130 sequentially connected from top to bottom, wherein the top plate 110 of the present embodiment is configured to support a combustion chamber head 700, a flame tube 600 of the combustion chamber is located below the top plate 110, and the head size of the combustion chamber is larger than the opening size of the top plate 110, so that the top plate 110 can perform a limiting and fixing function on the combustion chamber head 700, and referring to fig. 1, the support base 200 of the present embodiment is connected to the support rod 120, and the fixing base 300 of the present embodiment is mounted on the bottom plate 130. In this way, the top plate 110 of the bracket 100 is designed to support the head of the combustion chamber, so that the combustion chamber can better simulate the real assembly state after being fixed on the frequency measuring device, and the accuracy of static frequency detection is ensured.
Specifically, the number of the support rods 120 in this embodiment is multiple, for example, three in the drawing, the support seats 200 are connected to the support rods 120 in a one-to-one correspondence manner, and the support rods 120 are arranged between the top plate 110 and the bottom plate 130 at intervals along the circumferential direction in an inclined manner, and the radian of the outer contour surrounded by the support rods 120 is less than or equal to 180 °, so that, by the design of arranging the support rods 120, the support strength can be ensured, the device weight can be reduced, and the support rods 120 do not shade one side of the combustion chamber after being installed and fixed, thereby further facilitating the subsequent static frequency detection.
Optionally, the top plate 110 and the bottom plate 130 of this embodiment are arc plates, and, with the radian of arc plate less than or equal to 180 °, through this kind of structural design, design the top plate 110, the bottom plate 130 into the arc plate, not only can better match with the combustion chamber, can reduce the shielding to the combustion chamber surface moreover.
Specifically, referring to fig. 4, in the present embodiment, the first connection portion 210 is one of a hole and a groove provided on an outer flange of the annular fixing plate 400, preferably a hole, and the third connection portion 410 is also a hole or a hole-like structure, and the first connection portion 210 and the third connection portion 410 are detachably connected by a first connection member, which may be a common connection member such as a screw or a bolt, so that, when assembling, the first connection portion 210 and the third connection portion 410 are aligned, and then the screw or the bolt is directly screwed to the first connection portion 210 and the third connection portion 410, so that the structure is simple, the cost is low, and the assembly is easy.
Similarly, the second connecting portion 310 of the present embodiment may be one of a hole and a slot, preferably a hole, and a hook structure similar to the hole is disposed on the periphery of the combustion chamber transition section 500, and the second connecting portion 310 and the combustion chamber transition section 500 may be detachably connected through a second connecting member, where the second connecting member may also be a common connecting member such as a screw, a bolt, etc., and when assembled, two opposite holes are aligned, and then the second connecting member is screwed, so that the structure is simple and easy to assemble.
Referring to fig. 1 again, the fixing base 300 of the present embodiment includes two side walls 320 and a top wall 330 connected between the two side walls 320, the top wall 330 is provided with a mounting opening 331 adapted to the shape and size of the bottom of the transition section 500 of the combustion chamber, and the bottom of the transition section 500 of the combustion chamber can be installed into the mounting opening 331 during assembly of the combustion chamber through the arrangement of the mounting opening 331, so as to perform a better stabilizing effect on the transition section 500 of the combustion chamber.
Alternatively, the top wall 330 of the present embodiment is obliquely disposed on the two side walls 320, specifically, as shown in fig. 1, the top wall 330 is inclined in such a way that the horizontal height of the top wall 330 gradually increases along the direction of the support rod 120 near the middle, and the two side walls 320 are symmetrically integrally connected to the two sides of the top wall 330, so that the top wall 330 is designed to be an inclined structure, and the bottom of the transition section 500 of the combustion chamber can be conveniently installed.
Referring to fig. 4, the inner edge of the annular fixing plate 400 in this embodiment is provided with a first guiding and limiting portion 420, correspondingly, the top of the combustor transition section 500 in this embodiment is provided with a second guiding and limiting portion 510 matched with the first guiding and limiting portion 420, and when the annular fixing plate is specifically assembled, the positioning and assembling of the annular fixing plate 400 are not only convenient, but also the tangential limiting of the combustor transition section 500 can be realized, and the structural stability in the frequency measurement process is ensured.
Optionally, the first guiding and limiting portion 420 of the present embodiment includes a first limiting groove 421, as shown in fig. 5 and fig. 6, and the second guiding and limiting portion 510 of the present embodiment includes a second limiting groove 511 and a guiding block 512 detachably connected in the second limiting groove 511, where the guiding block 512 is matched with the first limiting groove 421 in shape and size, so that positioning assembly is implemented by matching the guiding block 512 with the first limiting groove 421, and the structure is simple and easy to process.
The following describes a specific assembly process of the fixing frame for measuring the combustion chamber frequency of the gas turbine of the present embodiment:
when the assembly before frequency measurement is carried out, firstly, the combustion chamber transition section 500 is arranged on the bracket 100, and the hook of the combustion chamber transition section 500 is connected on the bracket 100 by a screw;
then, sleeving the annular fixing plate 400 on the top of the combustor transition section 500, aligning the four first limit grooves 421 on the annular fixing plate 400 of the combustor transition section 500 with the four mounting grooves on the inlet of the combustor transition section 500, and then, dropping the annular fixing plate 400 on the bracket 100;
then, four guide blocks 512 are placed in the mounting groove and the first limit groove 421, and then the annular fixing plate 400 and the bracket 100 are tightly fastened by bolts;
finally, the sealing piece on the flame tube 600 is vertically arranged in the combustion chamber transition section 500, the end cover flange of the head 700 of the combustion chamber falls on the top plate 110 of the bracket 100, and the assembly of the combustion chamber is completed, and no shielding object exists outside the flame tube 600 and the combustion chamber transition section 500 of the combustion chamber, so that the static frequency test can be conveniently performed by using the detection unit.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A mount for combustion chamber frequency measurement of a gas turbine, comprising:
a bracket (100) configured to accommodate a combustion chamber, and provided with a support seat (200) in the middle thereof, the support seat (200) being provided with a first connection portion (210); the bracket (100) comprises a top plate (110), a supporting rod (120) and a bottom plate (130) which are sequentially connected from top to bottom, wherein the top plate (110) is configured to support a combustion chamber head (700), and the supporting seat (200) is connected to the supporting rod (120); the number of the support rods (120) is multiple, the support rods (120) are arranged between the top plate (110) and the bottom plate (130) at intervals along the circumferential direction, and the radian of an outer contour surrounded by the support rods (120) is less than or equal to 180 degrees; the top plate (110) and/or the bottom plate (130) are/is an arc-shaped plate, and the radian of the arc-shaped plate is less than or equal to 180 degrees;
the fixed seat (300) is arranged on the bottom plate (130) of the bracket (100) and is provided with a second connecting part (310) which is detachably matched with the combustion chamber transition section (500);
and an annular fixing plate (400) mounted on the support base (200) and provided with a third connecting part (410) detachably matched with the first connecting part (210), wherein the annular fixing plate (400) is configured to be sleeved on the top of the combustion chamber transition section (500) and limit tangential movement of the combustion chamber transition section (500).
2. The combustor frequency measurement mount of a gas turbine according to claim 1, wherein the first connection portion (210) is one of a hole and a groove, the third connection portion (410) is a hole, and the first connection portion (210) and the third connection portion (410) are detachably connected by a first connection member.
3. The combustor frequency measurement mount of a gas turbine according to claim 1, wherein the second connection portion (310) is one of a hole and a groove, a hole is provided at the periphery of the combustor transition section (500), and the second connection portion (310) and the combustor transition section (500) are detachably connected by a second connection member.
4. The fixing frame for measuring the frequency of the combustion chamber of the gas turbine according to claim 1, wherein the fixing seat (300) comprises two side walls (320) and a top wall (330) connected between the two side walls (320), and the top wall (330) is provided with a mounting opening (331) which is matched with the shape and the size of the bottom of the transition section (500) of the combustion chamber.
5. The holder for measuring frequency of combustion chamber of gas turbine engine as set forth in claim 4, wherein said top wall (330) is disposed obliquely to both of said side walls (320).
6. The fixing frame for measuring the frequency of the combustion chamber of the gas turbine according to any one of claims 1 to 5, wherein a first guiding and limiting part (420) is arranged at the inner edge of the annular fixing plate (400), and a second guiding and limiting part (510) matched with the first guiding and limiting part (420) is arranged at the top of the transition section (500) of the combustion chamber.
7. The fixing frame for measuring the frequency of the combustion chamber of the gas turbine according to claim 6, wherein the first guiding and limiting part (420) comprises a first limiting groove (421), the second guiding and limiting part (510) comprises a second limiting groove (511) and a guiding block (512) detachably connected in the second limiting groove (511), and the guiding block (512) and the first limiting groove (421) are in shape and size adaptation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310098453.1A CN116106020B (en) | 2023-02-10 | 2023-02-10 | Fixing frame for measuring frequency of combustion chamber of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310098453.1A CN116106020B (en) | 2023-02-10 | 2023-02-10 | Fixing frame for measuring frequency of combustion chamber of gas turbine |
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| CN116106020A CN116106020A (en) | 2023-05-12 |
| CN116106020B true CN116106020B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310098453.1A Active CN116106020B (en) | 2023-02-10 | 2023-02-10 | Fixing frame for measuring frequency of combustion chamber of gas turbine |
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| JP2005315473A (en) * | 2004-04-27 | 2005-11-10 | Mitsubishi Heavy Ind Ltd | Gas turbine combustor |
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| CN112945566A (en) * | 2021-03-15 | 2021-06-11 | 南京赛恩通航科技有限公司 | Simulation structure, test platform and test method of gas-distributing type annular combustion chamber |
| CN115446748A (en) * | 2022-09-20 | 2022-12-09 | 中国联合重型燃气轮机技术有限公司 | Combustor flame tube modal test fixture device |
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| KR101405228B1 (en) * | 2013-07-01 | 2014-06-10 | 기아자동차 주식회사 | Engine test device |
| DE102015212573A1 (en) * | 2015-07-06 | 2017-01-12 | Rolls-Royce Deutschland Ltd & Co Kg | Gas turbine combustor with integrated turbine guide wheel and method for its production |
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2023
- 2023-02-10 CN CN202310098453.1A patent/CN116106020B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005315473A (en) * | 2004-04-27 | 2005-11-10 | Mitsubishi Heavy Ind Ltd | Gas turbine combustor |
| JP2008281456A (en) * | 2007-05-11 | 2008-11-20 | Daifuku Co Ltd | Test chamber apparatus for engine |
| CN104595926A (en) * | 2015-01-23 | 2015-05-06 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Integral combustion chamber for heat-channel components |
| CN112945566A (en) * | 2021-03-15 | 2021-06-11 | 南京赛恩通航科技有限公司 | Simulation structure, test platform and test method of gas-distributing type annular combustion chamber |
| CN115446748A (en) * | 2022-09-20 | 2022-12-09 | 中国联合重型燃气轮机技术有限公司 | Combustor flame tube modal test fixture device |
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| CN116106020A (en) | 2023-05-12 |
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