A ceramic matrix composite single sector combustor test apparatus and method

Abstract

A kind of ceramic matrix composite (CMC) single sector combustion chamber test device, including test piece and fixing device.Therein, test piece is the frame-shaped structure made of ceramic matrix composite, to simulate combustion chamber structure, with air inlet end and exhaust end;Fixing device includes two oppositely arranged metal fixing plates, and the top pressing device is arranged on the fixing plate to abut on the surface of test piece and tighten test piece to fix the test piece in the inside side.The CMC structure and metal piece in the test device are only limited and fixed by one-way pressure, and the CMC structure will not bear tensile stress or shear stress due to the difference of expansion coefficient in high temperature test process, can effectively eliminate the harm of thermal mismatch, improve the test efficiency of CMC combustion chamber in development process and reduce test cost.The present application also provides a kind of ceramic matrix composite single sector combustion chamber test method.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of aero-engines, and particularly relates to a ceramic matrix composite single-sector combustion chamber test device and method. BACKGROUND

[0002] The ceramic matrix composite (CMC) has the characteristics of light weight and high strength and excellent high-temperature mechanical properties, so that the use temperature upper limit of the combustion chamber components can be significantly improved by using the CMC to replace the high-temperature alloy material to manufacture the inner and outer rings of the combustion chamber of an aero-engine, the overall efficiency of the engine is improved, and the pollution emission is reduced. The complete CMC material combustion chamber is relatively large in size, in order to reduce the test cost and shorten the trial period, a single-sector combustion chamber is usually used as a unit for test and test in the design verification stage, that is, a sector-shaped combustion chamber corresponding to the head of one or several combustion chambers is manufactured to replace the whole-ring combustion chamber for test. At present, the CMC combustion chamber test device generally needs to use a metal structure to fix the CMC component, and when high-temperature test is performed, the thermal expansion coefficients of the CMC and the metal material are quite different, and thermal mismatching problem is prone to occur. The CMC combustion chamber is easily affected by additional stress and vibration load during the test process, which is not conducive to the test under high temperature and high pressure. Therefore, it is necessary to provide a CMC composite single-sector combustion chamber test device which can avoid thermal mismatching for engine design and optimization. SUMMARY

[0003] The present application aims to provide a ceramic matrix composite single-sector combustion chamber test device which can avoid thermal mismatching during high-temperature test. The present application also provides a ceramic matrix composite single-sector combustion chamber test method.

[0004] An embodiment of one aspect of the present application provides a ceramic matrix composite single-sector combustion chamber test device, which comprises a test piece and a fixing device; wherein the test piece is configured in a frame-shaped structure made of ceramic matrix composite, and the test piece simulates the structure of a combustion chamber and comprises an air inlet end and an air outlet end; the fixing device comprises two oppositely arranged fixing plates made of metal material, the test piece is arranged between the fixing plates, and a jacking device is arranged on the fixing plates and abuts against the surface of the test piece and jacks up the test piece to fix the test piece.

[0005] The metal part and the CMC test piece of the device are fixed by jacking, and the metal part and the CMC test piece only rely on the pressure generated by jacking to form a limit, the thermal deformation under high-temperature working conditions is easily coordinated and absorbed between the test piece and the fixing device, and no significant tensile stress or shear stress is generated between the metal part and the CMC test piece, so that the problem of thermal mismatching is effectively eliminated.

[0006] Further, in some embodiments, the test piece comprises an inner ring sector plate, an outer ring sector plate and two side plates, the two ends of the inner ring sector plate and the outer ring sector plate are connected with the two side plates respectively, and the inner ring sector plate, the outer ring sector plate and the side plates are provided with a cross structure at the connection position, so that at least part of the inner ring sector plate, the outer ring sector plate and the side plates continue to extend beyond the connection position to form a support part, and the clamping device abuts against the support part. The support part formed by the cross structure is beneficial to the balance of the supporting force of the clamping device, and can improve the stability of the test device and reduce harmful vibration.

[0007] Further, in some embodiments, the cross structure is configured as a plug and a socket, the plug and the socket are connected by clamping, and the plug extends through the socket. The plug and socket structure is simple to process, and the support part formed thereby is stable in structure.

[0008] Further, in some embodiments, the clamping device comprises a metal pressing block and an elastic fastener, the metal pressing block is L-shaped, and the two sides of the L-shaped metal pressing block abut against the support parts of the side plates and the inner ring sector plate or the outer ring sector plate at the same time under the clamping of the elastic fastener. The L-shaped metal pressing block can abut against two adjacent support parts at the same time, which is beneficial to force balance and structural stability.

[0009] Further, in some embodiments, the elastic fastener is configured as a connecting pin and a fastening spring, and the connecting pin is arranged in the fixed plate. The fastening spring can keep the elastic fastener in a clamped state, avoiding loosening of the bolt caused by temperature change.

[0010] Further, in some embodiments, the elastic fastener further comprises an externally threaded nut, the externally threaded nut is fixed on the fixed plate, and the fastening spring abuts against the externally threaded nut to provide a pushing force for the connecting pin.

[0011] Further, in some embodiments, the connecting pin is configured as a light rod, and the center hole wall of the externally threaded nut is configured as a smooth wall. Only the fastening spring is used to apply pressure stress between the externally threaded nut and the connecting pin, further avoiding stress caused by thermal deformation between parts under high temperature working conditions.

[0012] Further, in some embodiments, the metal pressing block is manufactured by a cross-section sweeping forming process.

[0013] Further, in some embodiments, the cross structure is configured as a plug and a socket, the plug and the socket are connected by clamping, and the plug extends through the socket, the metal pressing block is provided with a clamping part, and the clamping part is clamped with the part of the plug extending through the socket. The clamping part is clamped with the plug, and the metal pressing block can be fixed on the test piece before the connecting pin is clamped.

[0014] Further, in some embodiments, the top tight device is configured with four groups, respectively arranged at the connecting positions of the inner ring sector plate, the outer ring sector plate and the two side plates of the test piece. The four groups of top tight devices are beneficial to realize stress balance and improve the stability of the test piece during the test process.

[0015] Further, in some embodiments, the fixing device further comprises a head mounting frame arranged at the air inlet end of the test piece and fixedly connected with the fixing plate, and the head mounting frame is provided with a fixing groove for clamping the air inlet end of the test piece. The head mounting frame can provide a mounting interface with an upstream test equipment and provide additional fixing support for the fixing plate.

[0016] Further, in some embodiments, the head mounting frame further comprises a mounting rib plate for allowing the combustion chamber head assembly to be mounted on the mounting rib plate.

[0017] Further, in some embodiments, the fixing device further comprises a mounting disc arranged at the exhaust end of the frame-shaped piece and fixedly connected with the fixing plate, and the mounting disc is provided with a sector-shaped interface for allowing the exhaust end of the test piece to be inserted into the sector-shaped interface. The mounting disc can assist in positioning the test piece and provide additional support for the fixing plate, thereby enhancing the structural stability of the test device.

[0018] Further, in some embodiments, the mounting disc is provided with cooling air holes.

[0019] In another aspect of the embodiments of the present application, a test method for a ceramic matrix composite single-sector combustion chamber is provided, which comprises the following steps: providing a ceramic matrix composite single-sector combustion chamber test piece, arranging a plurality of groups of elastic fasteners to provide an outward-to-inward pressure for fixing the test piece; and providing a high-temperature and high-pressure test environment to perform a combustion test in the test piece. The compression stress fixation can effectively avoid thermal mismatch caused by the difference in thermal expansion coefficients between the metal components and the CMC components of the test device, thereby improving the test success rate and reducing the development cost.

[0020] Further, the method uses the ceramic matrix composite single-sector combustion chamber test device according to any one of the preceding embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1a FIG. 1 is a structural schematic diagram of a CMC single-sector combustion chamber test device according to an embodiment of the present application;

[0022] Figure 1b FIG. 2 is a top view structural schematic diagram of a CMC single-sector combustion chamber test device according to an embodiment of the present application;

[0023] Figure 1cFigure 1 is a schematic diagram of the cross-sectional structure of a CMC single-sector combustion chamber test device in an embodiment;

[0024] Figure 2a Figure 2 is a schematic diagram of the structure of the inner ring sector plate and the outer ring sector plate in an embodiment;

[0025] Figure 2b Figure 3 is a schematic diagram of the structure of the side plate in an embodiment;

[0026] Figure 2c Figure 4 is a schematic diagram of the structure of the test piece in an embodiment;

[0027] Figure 3a Figure 5 is a schematic diagram of the structure of the metal compact in an embodiment;

[0028] Figure 3b Figure 6 is a schematic diagram of the structure of the metal compact mounting in an embodiment;

[0029] Figure 4 Figure 7 is a schematic diagram of the structure of the elastic fastener in an embodiment;

[0030] Figure 5 Figure 8 is a schematic diagram of the structure of the fixed plate in an embodiment;

[0031] Figure 6 Figure 9 is a schematic diagram of the structure of the Figure 1c Figure 10 is a schematic diagram of the structure of the partial enlargement in an embodiment;

[0032] Figure 7 Figure 11 is a schematic diagram of the structure of the mounting disc in an embodiment;

[0033] Figure 8a Figure 12 is a schematic diagram of the structure of the outside of the head mounting frame in an embodiment;

[0034] Figure 8b Figure 13 is a schematic diagram of the structure of the inside of the head mounting frame in an embodiment.

[0035] The above figures are intended to provide a detailed description of the present application so that those skilled in the art can understand the technical concept of the present application and are not intended to limit the present application. In order to express concisely, the above figures only schematically show the structures related to the technical features of the present application and do not strictly show the complete device and all details according to the actual proportions. DETAILED DESCRIPTION

[0036] The present application will be further described in detail below with reference to specific embodiments in conjunction with the accompanying drawings.

[0037] Reference to an "example" herein means that a particular feature, structure, or characteristic described in connection with the example can be included in at least one example of the present disclosure. The appearances of the phrase that in various places in the specification are not necessarily all referring to the same example, nor are the phrase "example" and "exemplary" necessarily limited to the same example. One of ordinary skill in the art will appreciate that an example described herein can be combined with another example to create another example.

[0038] In the description of the present disclosure, unless otherwise clearly specified and limited, the technical terms "mounting", "connecting", "connecting", and the like should be understood in a broad sense, which can be active connection, or fixed connection or integrated. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0039] In the description of the present disclosure, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "transverse", "longitudinal", "height", "length", "width" and the like are intended to accurately describe the embodiments and simplify the description, and are not intended to limit the parts or structures involved to have a specific orientation, to be installed or operated in a specific orientation, and cannot be understood as limiting the embodiments herein.

[0040] In the description of the present disclosure, the terms "first", "second", and the like are only used to distinguish different objects, and cannot be understood as indicating relative importance or limiting the number, specific order or primary and secondary relationship of the described technical features. In the description of the present disclosure, "a plurality of" means at least two.

[0041] In an embodiment of one aspect of the present disclosure, a ceramic matrix composite single-sector combustion chamber test device is provided, which has a structure as shown in Figure 1a The test device includes a test piece 1 and a fixing device 2, and the top view structure is as shown in Figure 1b The cross-sectional structure of A-A in Figure 1b The cross-sectional structure of A-A in Figure 1c The test piece 1 is made of ceramic matrix composite (CMC) and includes an outer ring sector plate 11, an inner ring sector plate 12, and a frame-shaped structure surrounded by two side plates 13a and 13b, which simulates the structure of a single sector of a combustion chamber. The fixing device 2 includes two fixing plates 21a and 21b, and the fixing plates 21a and 21b are provided with a clamping device 30, which is abutted and clamped inwardly on the surface of the test piece 1 to form a fixing. The fixing device 2 is made of metal, and in some embodiments, it can be made of one or more of heat-resistant steel, nickel-based alloy, and titanium alloy.

[0042] Specifically, the structure of the outer ring sector plate 11 and the inner ring sector plate 12 is as shown in Figure 2aAs shown, air film holes 103 are provided on the surfaces of the outer ring sector plate 11 and the inner ring sector plate 12, and extend through the thickness direction. On the outer side of the outer ring sector plate 11 (i.e. the side away from the axis of the annular combustion chamber), a mounting seat 111 is further provided for mounting test equipment. On the edges of the outer ring sector plate 11 / inner ring sector plate 12 which are connected to the side plates 13a, 13b, protruding insertion plates 101 are provided for connecting to the side plates 13a, 13b. The structure of the side plates 13a, 13b is as shown in Figure 2b As shown, insertion ports 102 are provided on the longitudinal edges of the side plates 13a, 13b, and the shape and size of the insertion ports 102 correspond to the insertion plates 101, so that the insertion plates 101 can be inserted into the insertion ports 102 to form a cross structure, and the outer ring sector plate 11, the inner ring sector plate 12 and the two side plates 13a, 13b are connected in the manner as shown in Figure 2c As shown, the portions of the two side plates 13a, 13b which are closer to the edges relative to the insertion ports 102 and the portions of the insertion plates 101 which pass through the insertion ports 102 form support portions 104 which continue to extend beyond the connection positions. The test piece 1 in the form of a frame is provided with an air inlet end 10a having a larger opening and an air outlet end 10b having a smaller opening. During the test, the mixed oil and gas enters the test piece 1 through the air inlet end 10a, burns in the frame structure of the test piece 1, and the burned gas is discharged through the air outlet end 10b.

[0043] In some embodiments, the cross structure formed by the outer ring sector plate 11 / inner ring sector plate 12 and the two side plates 13a / 13b can also have other forms, for example, the insertion ports can be provided on the outer ring sector plate 11 / inner ring sector plate 12 and the insertion plates can be provided on the two side plates 13a / 13b; or the insertion ports 102 can be replaced by L-shaped clamping legs.

[0044] The structure of the clamping device 30 is as shown in Figure 1c The enlarged structure is as shown in Figure 6 As shown in combination with Figure 3a , Figure 3b and Figure 4 , the clamping device 30 includes a metal pressing block 31 and an elastic fastener 32. The structure of the metal pressing block 31 is as shown in Figure 3a The cross section of the metal pressing block 31 is in the form of an L shape, and the whole is formed by cross section sweeping. An arc-shaped limiting surface 311 is provided at the turning position of the L shape, and is connected to the elastic fastener 32. The two sides of the L shape are respectively a support surface 312 for clamping the side plate and a support surface 313 for clamping the insertion plate 101. A clamping portion 314 is further provided on the support surface 313 to clamp and fix the insertion plate 101. The metal pressing block 31 is provided in multiple sizes to match insertion plates 101 of different positions and sizes.

[0045] The structure of the elastic fastener 32 is as shown in Figure 4As shown, the connecting pin 322 has a pushing end 321 arranged to abut against the metal pressing block 31, and a flange 325 arranged near the pushing end 321 to support the fastening spring 323.

[0046] In the preferred embodiment, the connecting pin 322 is configured as a light pole, the inner hole of the nut 324 is configured as a smooth hole to allow the connecting pin 322 to pass through and slide relatively, and the nut 324 is configured as an external thread nut screwed on the fixed plate by external threads. As shown in the fixed plate 21b, Figure 5 As shown, the fixed plate 21b is provided with inclined support ribs 211 at both ends, and a plurality of mounting holes 212 are arranged on the support ribs 211, the number of the mounting threaded holes 212 being consistent with the number of the plug-in plates 101. The mounting state of the tightening device 30 is shown in Figure 6 As shown, the connecting pin 322 passes through the mounting hole 212, the pushing end 321 abuts against the limiting surface 311 of the metal pressing block 31 at about 45°, one end of the fastening spring 323 abuts against the flange 325, and the external thread nut 324 is screwed in the mounting hole 212 by external threads, with the bottom end abutting against the other end of the fastening spring 323. The nut 324 is screwed in the mounting hole 212 by external threads and tightened to a predetermined mounting compression torque, and the fastening spring 323 pushes the flange 325 of the connecting pin 322 during the tightening process, so that the metal pressing block 31 abuts against the support part 104 under the action of the pushing end 321, the support surface 312 of the metal pressing block 31 abuts against the side plate 13b, and the support surface 313 abuts against the plug-in plate 101 at the edge of the outer ring sector plate 11; the four edges of the test piece 1 are provided with the tightening device 30 for tightening, so that the test piece 1 is balanced in overall stress, and the positions in contact with the fixed device 2 are mainly under compression stress.

[0047] In some embodiments, the tightening device 30 can also be arranged as more than four groups, for example, a plurality of groups of tightening devices perpendicular to the outer ring sector plate 11, the inner ring sector plate 12, and the side plates 13a and 13b can be arranged to fix the test piece 1. In some embodiments, the metal pressing block can also be arranged to abut against only one plane. In some embodiments, the fastening spring 323 can also be replaced by a metal gasket with elasticity or other structures with elasticity.

[0048] Through the above structure, the interaction between the CMC test piece 1 and the metal fixing device 2 is mainly in compression stress, when high temperature test is carried out, the thermal mismatch caused by the difference of the thermal expansion coefficient between the CMC and the metal is easily offset by the fixing device, the support part 104 will only bear the extrusion from the metal pressing block 31, and the connecting pin 322 will only bear the pushing from the fastening spring 323, and the CMC structure will not bear significant tensile stress or shear stress. Further, the elastic fastener 32 can keep the metal pressing block 31 in a tight state by the spring, avoiding the relaxation caused by the thermal mismatch, and reducing the vibration of the test piece 1 in the simulated combustion process.

[0049] In the preferred embodiment, the fixing device 2 further comprises a head mounting frame 23, the structure of which is shown in Figure 8a and Figure 8b . The outer side of the head mounting frame 23 (i.e. the side away from the test piece 1) is provided with mounting edges 231 on both sides, and mounting holes 232 are arranged on the mounting edges 231. In combination with FIG. 1 and Figure 5 , the bolts 25 pass through the mounting holes 232 and the through holes 213 on the fixing plates to fixedly mount the fixing plates 21a, 21b and the mounting edges of the head mounting frame 23 together. The outer side of the mounting edge 23 is further provided with protruding mounting rib plates 233, which are used to mount the combustion chamber head components such as the vortex finder, the cap, the splash plate, etc. during the test. The inner side of the head mounting frame 23 (i.e. the side towards the test piece 1) is provided with a fixing groove 234, the shape and size of which are consistent with the air inlet end 10a of the test piece 1, allowing the outer ring sector plate 11, the inner ring sector plate 12 and the two side plates 13a, 13b to be clamped in the fixing groove 234 to form a limiting constraint along the air inlet direction of the combustion chamber. It should be understood that a reasonable tolerance is provided between the fixing groove 234 and the test piece 1.

[0050] In the preferred embodiment, the fixing device 2 further comprises a mounting disc 24, the structure of which is shown in Figure 7 . The mounting disc 24 is provided with a plurality of through holes 242, in combination with FIG. 1 and Figure 5 , the bolts 26 pass through the through holes 242 and the through holes 215 on the mounting edges 214 of the fixing plates to fixedly connect the mounting disc 24 and the two fixing plates 21a, 21b together. A sector-shaped interface 241 is arranged in the middle of the mounting disc 24, the size of which matches the size of the exhaust end 10b of the test piece 1, so as to allow the exhaust end 10b of the test piece 1 to be inserted into the sector-shaped interface 241. It should also be understood that a reasonable tolerance is provided between the sector-shaped interface 241 and the exhaust end 10b of the test piece 1. In a further preferred embodiment, a plurality of cooling air holes 243 are arranged through the mounting disc 24, which are used as cooling air flow passages during the combustion test of the combustion chamber, allowing the passage of cooling air flow for cooling.

[0051] In another aspect of the present application, an embodiment of a method for testing a single-sector ceramic matrix composite (CMC) combustion chamber is provided, comprising the following steps:

[0052] First, the test piece is assembled, and the outer ring sector plate 11 and the inner ring sector plate 12 as shown in FIG. 1 are spliced with the side plates 13a and 13b as shown in FIG. 2, and the plug 101 is inserted into the socket 102 for fixation, to obtain the test piece 1 as shown in FIG. 3. The plug 101 and the side plates 13a / 13b intersect to form a support portion 104. Figure 2a Figure 2b Figure 2c

[0053] Next, the fixing device is assembled. As shown in FIG. 4, the metal pressing block 31 is installed on the plug 101, and the clamping portion 314 of the metal pressing block 31 is clamped on the plug 101. The exhaust end 10b of the test piece 1 is inserted into the sector interface 241 of the mounting disc 24, and two fixing plates 21a and 21b are arranged on the left and right sides of the test piece 1, and the fixing plates 21a and 21b are fixedly connected with the mounting disc 24 by the bolts 26. Next, the head mounting frame 23 is installed on the intake end 10a of the test piece 1, and the fixing groove 234 of the head mounting frame 23 is clamped on the port of the intake end 10a of the test piece 1, and the fixing plates 21a and 21b are fixedly connected with the head mounting frame 23 by the bolts 25. Then, the fastening spring 323 is inserted into the mounting hole 212 of each support rib 211 of the fixing plates 21a and 21b through the threaded stud 322, and the nut 324 is tightened from the outside to apply a preset installation compression torque, so that the push end 321 abuts against the limiting surface 311 of the metal pressing block 31, thereby transmitting the pressure of the fastening spring 323 to the support portion 104, and achieving the limiting fixation of the test piece 1 by compressive stress. Figure 3b Finally, each combustion chamber head assembly is installed on the mounting rib plate 233 of the head mounting frame 23, and the entire test device is installed on the external test bench to provide a closed high-temperature and high-pressure environment, and the oil and gas input from the intake end 10a of the test piece 1 is ignited for combustion simulation test in the test piece 1, thereby completing the test of the CMC combustion chamber test piece.

[0054] In the preferred embodiment, the above method is completed by using the CMC single-sector combustion chamber test piece provided in any of the foregoing embodiments, and in other embodiments, the CMC test piece with different structures is also fixed by the compressive stress from the outside to the inside, for example, the CMC test piece is tightly fixed by using a metal band with a matching structure, and the same purpose of avoiding the negative effects of thermal mismatch and reducing harmful vibration is achieved.

[0055]

[0056] ​​​​The above embodiments are intended to further illustrate the technical concept of the present application in conjunction with the drawings, so that those skilled in the art can understand the technical concept of the present application. Within the scope of the claims of the present application, optimization or equivalent replacement of the structures of the parts involved or the method steps, and combination of the embodiments in different embodiments without structural and principle conflicts, all fall within the protection scope of the present application.

Claims

1. A ceramic matrix composite single sector combustor test apparatus, characterized by, The test piece and the fixing device are included; wherein The test piece is configured as a frame-shaped structure made of ceramic matrix composite material, including inner ring sector plates, outer ring sector plates and two side plates, the two ends of the inner ring sector plates and the outer ring sector plates are respectively connected with the two side plates, and the inner ring sector plates, the outer ring sector plates and the side plates are provided with a cross structure at the connection position, so that at least part of the inner ring sector plates, the outer ring sector plates and the side plates continue to extend beyond the connection position to form support parts; the test piece simulates the structure of a combustion chamber, including an air inlet end and an air outlet end; The fixing device includes two oppositely arranged fixing plates made of metal material, the test piece is arranged between the fixing plates, the fixing plates are provided with a clamping device, the clamping device abuts against the surface of the test piece on the inner side and clamps the test piece to fix the test piece, and the clamping device abuts against the support part; wherein The clamping device includes a metal pressing block and an elastic fastener, the metal pressing block is L-shaped, and the two sides of the L-shaped metal pressing block abut against the support parts of the side plates and the inner ring sector plates or the outer ring sector plates at the same time under the clamping of the elastic fastener; the elastic fastener is configured as a connecting pin and a fastening spring, the connecting pin is arranged in the fixing plate; the elastic fastener further includes an external thread nut, the external thread nut is fixed on the fixing plate, and the fastening spring abuts against the external thread nut to provide a pushing force for the connecting pin.

2. The ceramic matrix composite single sector combustor test device of claim 1, wherein, The cross structure is configured as a plug and a socket, the plug and the socket are connected by clamping, and the plug extends through the socket.

3. The ceramic matrix composite single sector combustor test device of claim 1, wherein, The connecting pin is configured as a light rod, and the center hole wall of the external thread nut is configured as a smooth wall.

4. The ceramic matrix composite single sector combustor test device of claim 1, wherein, The metal pressing block is manufactured by a cross-section sweeping forming process.

5. The ceramic matrix composite single sector combustor test device of claim 1, wherein, The cross structure is configured as a plug and a socket, the plug and the socket are connected by clamping, and the plug extends through the socket, the metal pressing block is provided with a clamping part, and the clamping part is clamped with the part of the plug extending through the socket.

6. The ceramic matrix composite single sector combustor test device of claim 1 or 2, wherein, The clamping device is configured with four groups, which are respectively arranged at the connection positions of the inner ring sector plates, the outer ring sector plates and the two side plates of the test piece.

7. The ceramic matrix composite single sector combustor test apparatus of claim 1, wherein, The fixing device further includes a head mounting frame, the head mounting frame is arranged at the air inlet end of the test piece and is fixedly connected with the fixing plates, and the head mounting frame is provided with a fixing groove to clamp the air inlet end of the test piece.

8. The ceramic matrix composite single sector combustor test device of claim 7, wherein, The head mounting frame further includes a mounting rib plate to allow a combustion chamber head assembly to be mounted on the mounting rib plate.

9. The ceramic matrix composite single sector combustor test device of claim 1, wherein, The fixing device further includes a mounting disc, the mounting disc is arranged at the air outlet end of the frame-shaped structure and is fixedly connected with the fixing plates, and the mounting disc is provided with a sector-shaped interface to allow the air outlet end of the test piece to be inserted into the sector-shaped interface.

10. The ceramic matrix composite single sector combustor test device of claim 9, wherein, The mounting disc is provided with cooling holes.

11. A method of testing a ceramic matrix composite single sector combustor, characterized by, The ceramic matrix composite single-sector combustion chamber test device is used, and the following steps are included: A ceramic matrix composite single-sector combustion chamber test piece is provided, and multiple groups of elastic fasteners are arranged to provide external-to-internal pressure for fixing the test piece. A high temperature and high pressure test environment is provided, and a combustion test is performed within the test piece. A high temperature and high pressure test environment is provided, and a combustion test is performed within the test piece.

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