Combustion chamber outer casing high-temperature vibration fatigue test device

Abstract

The utility model relates to the technical field of aero-engines, and particularly provides a combustion chamber outer casing high-temperature vibration fatigue test device which comprises an electric vibration table, a vibration clamp, a heating assembly and a heat insulation cover. The electric vibration table comprises a fixed table and a sliding table assembled on the fixed table in a sliding mode, and the sliding table is provided with a vibration exciter used for applying vibration loads to the outer machine brake. The vibration clamp is installed on the sliding table and used for being fixedly connected with a front end flange on an outer machine brake. The heating assembly comprises a fixing frame and a heating device, and the heating device is used for being arranged in an inner hole of the outer machine brake so as to heat the interior of the outer machine brake. By adopting a built-in heating mode, the temperature of the inner surface of the outer casing is higher than that of the outer surface of the outer casing and is consistent with the temperature gradient of the outer casing in actual work, the temperature condition of the outer casing in actual work is restored, and the accuracy of a test result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation engines, and specifically provides a combustion chamber outer casing high temperature vibration fatigue test device. Background Art

[0002] As a key part of the core high-pressure casing of an aircraft engine, the outer casing of the combustion chamber has the main function of containing the high-temperature, high-pressure airflow in the combustion chamber and isolating the fuel main pipe from the high-temperature airflow outside, playing a cooling and heat insulation role to ensure the safe and stable operation of the combustion chamber flame nozzle system. During the working process, it mainly bears temperature loads, aerodynamic loads and vibration loads, and the maximum operating temperature is above 650℃. The structure of the outer casing of the combustion chamber is as follows: Figure 1 As shown, it comprises a box body, the two ends of which are respectively connected with a front flange 11 and a rear flange 12, and the box body has an inner hole penetrating the box body.

[0003] In order to ensure the safe and stable operation of the combustion chamber flame nozzle system, in addition to the necessary pressure test and stiffness test on the outer casing, a high-temperature vibration fatigue test is also required to determine whether the outer casing can withstand the vibration conditions during its life cycle and work normally.

[0004] In the high temperature vibration fatigue test of the outer casing of the combustion chamber, the current high temperature vibration fatigue test fixing method is to use a heightened vibration fixture, fix the outer casing to the upper part of the high temperature vibration fixture through fixing bolts, and place it in a high temperature heating furnace; the bottom of the vibration fixture is fixed to the vibration table through connecting bolts, and is equipped with a cooling system. This test device has extremely high high temperature resistance requirements for the vibration fixture, connecting bolts, etc., and the test cost is relatively high; in addition, since heating is used on the outside of the outer casing, the outer surface temperature of the outer casing will be higher than the inner surface temperature, which is opposite to the temperature gradient of the outer casing when it is actually working, and it is difficult to restore its actual working temperature conditions. Utility Model Content

[0005] The utility model provides a high temperature vibration fatigue test device for an outer casing of a combustion chamber, so as to solve the technical problem that the existing high temperature vibration fatigue test is difficult to truly restore the real working environment of the outer casing and easily causes inaccurate test results.

[0006] In order to solve the above problems, the combustion chamber outer casing high temperature vibration fatigue test device provided by the utility model adopts the following technical solutions:

[0007] A combustion chamber outer casing high temperature vibration fatigue test device, comprising:

[0008] An electric vibration table comprises a fixed table and a sliding table slidably mounted on the fixed table, wherein the sliding table is provided with a vibration exciter for applying a vibration load to the outer casing;

[0009] a vibration fixture, mounted on the slide and used to be connected and fixed to the front end flange on the outer casing, so as to apply a vibration load to the outer casing through the vibration exciter;

[0010] A heating assembly includes a fixing frame and a heating device mounted on the fixing frame, the fixing frame is mounted on the fixing table, and the heating device is used to be built into the inner hole of the outer casing to heat the interior of the outer casing;

[0011] The heat insulation cover is a cantilever structure, which is used to cover the periphery of the outer casing and is connected to the fixing frame.

[0012] Furthermore, the vibration clamp includes a fixed vertical plate, an adapter plate and a connecting base, the upper end of the fixed vertical plate is connected and fixed to the adapter plate, and the lower end is fixed to the connecting base; the adapter plate is used to connect to the front end flange, and the connecting base is connected to the slide.

[0013] Furthermore, a first reinforcement plate and a second reinforcement plate are respectively connected between the left and right sides of the fixed vertical plate and the connecting base, and at least two groups of the first reinforcement plate and the second reinforcement plate are provided along the front-to-back direction.

[0014] Preferably, the fixed vertical plate, the connecting base, the first reinforcement plate and the second reinforcement plate are all made of aluminum alloy plates.

[0015] Furthermore, the fixed vertical plate, the connecting base, the first reinforcement plate and the second reinforcement plate are all made of high-temperature resistant 2A14 aluminum alloy plates with relatively high specific strength.

[0016] Furthermore, the adapter plate includes an integrally formed and coaxial plate body and a plug-in protrusion, the outer diameter of the plug-in protrusion is smaller than the outer diameter of the plate body, a stop step is formed between the plate body and the plug-in protrusion, the plug-in protrusion is plug-fitted with the through-hole on the fixed vertical plate, and the plate body is connected to the fixed vertical plate.

[0017] Furthermore, the heating device is a heating furnace, which includes a furnace body, a heating tube, a furnace body fixed section, a heating tube fixed plate, an insulation ring, an insulation plate, a temperature control thermocouple, a monitoring thermocouple, an electrical cable and a power interface; the left end of the furnace body is fixed on the furnace body fixed section, and the right end is connected to the heating tube fixed plate; the heating tube is arranged between the furnace body fixed section and the heating tube fixed plate, and multiple groups are arranged around the circumference of the furnace body; the fixed vertical plate and the adapter plate are both provided with through-holes for the furnace body to pass through, the insulation ring is arranged at the through-holes to block the heat transfer between the furnace body and the fixed vertical plate and the adapter plate, the insulation plate is arranged on the left side of the fixed vertical plate, and the outer diameter of the insulation plate is larger than the outer diameter of the through-hole; the temperature control thermocouple and the monitoring thermocouple are symmetrically arranged at an angle of 180° on the outside of the heating tube fixed plate, and are controlled and monitored by the temperature of the furnace body; the power interface is arranged on the furnace body fixed section, and is electrically connected to each group of heating tubes through an electrical cable.

[0018] Preferably, the adapter plate, the insulation ring and the insulation plate are all stainless steel plates, and the interior of the insulation plate is filled with a fire-resistant insulation layer.

[0019] Furthermore, the adapter plate is made of heat-resistant martensitic stainless steel PH17-4, the insulation ring is made of two layers of heat-resistant martensitic stainless steel 1Cr11Ni2W2MoV thin plates with mirror surfaces, and the insulation plate is made of austenitic stainless steel plates with good welding performance.

[0020] Furthermore, the fixed frame includes an H-shaped frame, a fixed base, a connecting section, a fixed plate and a third reinforcement plate; the bottom of the H-shaped frame is welded and fixed to the fixed base, and the top is welded and connected to the connecting section and the third reinforcement plate; the left side of the fixed plate is fixed to the connecting section, and the right side is fixed to the heating furnace and the heat insulation cover; the fixed base is installed on the fixed platform.

[0021] Preferably, the heating tube is a quartz electric heating tube.

[0022] Furthermore, a fire-resistant heat-insulating layer is provided in the cover wall of the heat-insulating cover.

[0023] The beneficial effects of the utility model are as follows: the high-temperature vibration fatigue test device for the outer casing of the combustion chamber adopts a built-in heating method, and the heating device is arranged inside the outer casing, so that the inner surface temperature of the outer casing is higher than the outer surface temperature, which is consistent with the temperature gradient during its actual operation. On the premise of restoring the actual working temperature conditions of the outer casing, by adding insulation rings and insulation plates to the heating furnace and adding adapter plates to the vibration fixture, the high temperature resistance requirements for the vibration fixture, connecting bolts, etc. are greatly reduced, and the cooling device is omitted, thereby greatly reducing the test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0025] Figure 1 It is a three-dimensional structural diagram of the outer casing of the combustion chamber;

[0026] Figure 2 It is a structural schematic diagram of a combustion chamber outer casing high temperature vibration fatigue test device of the utility model;

[0027] Figure 3 for Figure 2 Right view of;

[0028] Figure 4 for Figure 2 Left view of .

[0029] Description of reference numerals:

[0030] 1. Outer casing; 11. Front end flange; 12. Rear end flange; 2. Vibration fixture; 21. Fixed vertical plate; 22. Adapter plate; 23. Connecting base; 24. First reinforcement plate; 25. Second reinforcement plate; 3. Heating furnace; 31. Furnace body; 32. Heating tube; 33. Furnace body fixed section; 34. Heating tube fixing plate; 35. Insulation ring; 36. Insulation plate; 37. Temperature control thermocouple; 38. Monitoring thermocouple; 39. Cable; 310. Power interface; 4. Insulation cover; 5. Fixed frame; 51. H-shaped frame; 52. Fixed base; 53. Connecting section; 54. Fixed plate; 55. Third reinforcement plate; 6. Electric vibration table; 61. Vibrator; 62. Sliding table; 63. Fixed table. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0032] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0033] Embodiment 1 of the combustion chamber high temperature vibration fatigue test device provided by the utility model:

[0034] according to Figure 2 , Figure 3 and Figure 4 As shown, a combustion chamber outer casing high temperature vibration fatigue test device includes a vibration fixture 2, a heating component, a heat insulation cover 4 and an electric vibration table 6.

[0035] The electric vibration table 6 includes a fixed table 63 and a slide table 62 slidably mounted on the fixed table 63. The slide table 62 is provided with an exciter 61 for applying a vibration load to the outer casing 1. The exciter 61 is a prior art. The upper end of the vibration fixture 2 is connected and fixed to the front end flange 11 of the outer casing 1, and the lower end is fixed to the slide table 62 of the electric vibration table 6. The vibration load is applied to the outer casing 1 through the exciter 61 thereon.

[0036] The heating assembly includes a fixing frame 5 and a heating device installed on the fixing frame 5. In this embodiment, the heating device adopts a heating furnace 3, which is a cantilever structure, with the right end built into the hole of the outer casing 1 and the left end fixed to the fixing frame 5. The heat insulation cover 4 is a cantilever structure, which is used to cover the outer side of the outer casing 1, with the right end placed on the outer periphery of the outer casing 1 to play a role in heat preservation and heat insulation, and the left end is fixed to the fixing frame 5; the lower end of the fixing frame 5 is fixed to the fixing table 63 of the electric vibration table 6.

[0037] In this embodiment, the vibration clamp 2 includes a fixed vertical plate 21, an adapter plate 22, a connecting base 23, a first reinforcement plate 24 and a second reinforcement plate 25. The fixed vertical plate 21, the connecting base 23, the first reinforcement plate 24 and the second reinforcement plate 25 are all made of high-temperature resistant 2A14 aluminum alloy plate with higher specific strength. The upper end of the fixed vertical plate 21 is connected to the fixed adapter plate 22, and the lower end is fixed to the connecting base 23; two groups of first reinforcement plates 24 are arranged on the left side, and three groups of second reinforcement plates 25 are arranged on the right side. The first reinforcement plate 24 and the second reinforcement plate 25 are used to reinforce the fixed vertical plate 21 to increase its rigidity. The adapter plate 22 includes an integrally formed and coaxial plate body and a plug-in protrusion. The outer diameter of the plug-in protrusion is smaller than the outer diameter of the plate body, and a stop step is formed between the plate body and the plug-in protrusion.

[0038] like Figure 2 As shown, the heating furnace 3 includes a furnace body 31, a heating tube 32, a furnace body fixing section 33, a heating tube fixing plate 34, a heat insulation ring 35, a heat insulation plate 36, a temperature control thermocouple 37, a monitoring thermocouple 38, a cable 39 and a power interface 310. The furnace body fixing section 33 is located on the left side of the fixed vertical plate 21, and the heating tube fixing plate 34 is located on the right side of the rear end flange 12. The left side of the furnace body 31 is fixedly connected to the furnace body fixing section 33, and the right end is connected to the heating tube fixing plate 34, and twelve groups of heating tubes 32 are arranged circumferentially on the surface. The heating tube 32 is fixed by the furnace body fixing section 33 on the left side and the heating tube fixing plate 34 on the right side; a group of lateral heat insulation plates 35 and a group of circumferential heat insulation rings 36 are arranged on the left side of the furnace body 31. The fixed vertical plate 21 and the adapter plate 22 are both provided with a through hole for the furnace body 31 to pass through, and the heat insulation ring 36 is arranged at the through hole, which is used for radiation heat insulation of the fixed vertical plate 21 and the adapter plate 22 on the vibration fixture 2; the interior of the heat insulation plate 35 is filled with lightweight refractory heat insulation material to form a refractory heat insulation layer. The above-mentioned plug-in protrusion is plugged into the through hole on the fixed vertical plate 21, and the plate body is connected to the fixed vertical plate 21 and the front flange 11. A temperature control thermocouple 37 and a monitoring thermocouple 38 are arranged symmetrically at 180° on the outside of the heating tube fixing plate 34, which are used to connect to the temperature control cabinet to realize the control and monitoring of the furnace temperature. A group of power supply interfaces 310 are arranged on the fixed section 33 of the furnace body, which are electrically connected to the twelve groups of heating tubes 32 through cables 39, and are used to connect to the power supply to realize the simultaneous power supply of each group of heating tubes 32.

[0039] The wall of the heat shield 4 is filled with a light fire-resistant heat-insulating material to form a fire-resistant heat-insulating layer, thereby achieving heat preservation of the temperature field of the outer casing 1 and playing a cooling and heat-insulating role for the connection base 23 on the vibration fixture 2.

[0040] like Figure 2 and Figure 3 As shown, the fixing frame 5 comprises an H-shaped frame 51, a fixing base 52, a connecting section 53, a fixing plate 54 and a third reinforcing plate 55. The bottom of the H-shaped frame 51 is welded and fixed to the fixing base 52, and the upper part is connected and fixed to the connecting section 53 and the reinforcing plate 55 by welding; the fixing plate 54 is fixed to the connecting section 53 by welding on the left side, and the heating furnace 3 and the heat insulation cover 4 are fixed on the right side by bolts, washers and other standard parts; the fixing base 52 is fixed to the fixing table 63 of the electric vibration table 6 by bolts, washers and other standard parts.

[0041] The installation and use of the combustion chamber high temperature vibration fatigue test device are as follows:

[0042] a. First, the X-direction high temperature vibration fatigue test of the outer casing 1 is carried out, including the following steps:

[0043] (1) First adjust the exciter 61 of the electric vibration table 6 to the horizontal direction (such as Figure 2 shown);

[0044] (2) Fix the vibration fixture 2 to the slide 62 of the electric vibration table 6 along the vibration direction of the exciter 61 by means of standard bolts;

[0045] (3) Then, the outer casing 1 is fixed to the adapter plate 22 of the vibration fixture 2 by connecting the outer casing 1 to the front flange 11 on the outer casing 1 through standard bolts;

[0046] (4) Then, the heating furnace 3 is inserted into the hole of the outer casing 1 from the left side of the outer casing 1. The insertion depth of the heating furnace 3 is adjusted in combination with the horizontal installation distance (≥20 mm) between the outer casing 1 and the heat insulation board 36 on the side of the heating furnace 3. The heating furnace 3 is fixed to the fixing plate 54 of the fixing frame 5 by means of the connecting section 53 and standard parts such as bolts and gaskets.

[0047] (5) Press the fixing bracket 5 Figure 2 In the direction shown, it is mounted and fixed on the fixing table 63 of the electric vibration table 6;

[0048] (6) Finally, the heat shield 4 is mounted and fixed on the fixing plate 54 of the heating heat fixing frame 5;

[0049] (7) Connect the vibration sensor and turn on the power of the heating furnace 3. When the temperature reaches the test temperature, perform the X-axis high-temperature vibration test of the outer casing according to the vibration test procedure.

[0050] b. Next, the Y-axis high temperature vibration test of the outer casing 1 is carried out, and the steps are as follows:

[0051] (8) Fix the vibration fixture 2 to the slide table 62 of the electric vibration table 6 by means of standard bolts in a horizontal direction perpendicular to the vibration direction of the vibration exciter 61;

[0052] (9) Repeat steps (3) to (4);

[0053] (10) The fixing frame 5 is then fixed on the fixing table 63 of the electric vibration table 6 in a horizontal direction perpendicular to the vibration direction of the vibration exciter 61;

[0054] (11) Repeat step (6);

[0055] (12) Turn on the power of the heating furnace 3. When the temperature reaches the test temperature, perform the Y-axis high-temperature vibration test of the outer casing 1 according to its vibration test procedure.

[0056] c. Finally, the Z-direction high temperature vibration test of the outer casing 1 is carried out, and the steps are as follows:

[0057] (13) First, adjust the exciter 61 of the electric vibration table 6 to a vertical height, that is, to be located below the slide table 62;

[0058] (14) Fix the vibration fixture 2 to the slide 62 of the electric vibration table 6 by means of standard bolts;

[0059] (15) Repeat steps (3) to (5);

[0060] (16) Turn on the power of the heating furnace 3. When the temperature reaches the test temperature, perform the Z-axis high-temperature vibration test of the outer casing 1 according to its vibration test procedure.

[0061] The utility model realizes that the temperature of the inner surface of the outer casing 1 is higher than that of the outer surface by designing the heating furnace 3 as a built-in heating, which is consistent with the temperature gradient when it is actually working, and restores the temperature condition of the outer casing 1 when it is actually working. At the same time, by adding a circumferential heat insulation ring 35 and a side heat insulation plate 36 to the heating furnace 3, and adding an adapter plate 22 to the vibration fixture 2, the high temperature resistance requirements for the vibration fixture 2, connecting bolts and other components are greatly reduced, and the cooling device is omitted, which greatly reduces the test cost.

[0062] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and other terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0063] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

[0064] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A combustion chamber outer casing high temperature vibration fatigue test device, characterized in that: include: An electric vibration table (6) comprises a fixed table (63) and a sliding table (62) slidably mounted on the fixed table (63), wherein the sliding table (62) is provided with a vibration exciter (61) for applying a vibration load to the outer casing (1); a vibration fixture (2) mounted on the slide table (62) and used to be connected and fixed to a front end flange (11) on the outer casing (1) so as to apply a vibration load to the outer casing (1) through the vibration exciter (61); A heating assembly comprises a fixing frame (5) and a heating device mounted on the fixing frame (5), wherein the fixing frame (5) is mounted on the fixing platform (63), and the heating device is used to be built into the inner hole of the outer casing (1) to heat the interior of the outer casing (1); The heat insulation cover (4) is a cantilever structure, is used to cover the periphery of the outer casing (1), and is connected to the fixing frame (5).

2. A combustion chamber outer casing high temperature vibration fatigue test device according to claim 1, characterized in that: The vibration fixture (2) comprises a fixed vertical plate (21), an adapter plate (22) and a connecting base (23); the fixed vertical plate (21) and the adapter plate (22) are coaxially fixed, and the lower end is fixed on the connecting base (23); the adapter plate (22) is used to connect to the front end flange (11), and the connecting base (23) is connected to the slide table (62).

3. A combustion chamber outer casing high temperature vibration fatigue test device according to claim 2, characterized in that: A first reinforcement plate (24) and a second reinforcement plate (25) are respectively connected between the left and right sides of the fixed vertical plate (21) and the connection base (23), and at least two groups of the first reinforcement plate (24) and the second reinforcement plate (25) are provided along the front-rear direction.

4. A combustion chamber outer casing high temperature vibration fatigue test device according to claim 3, characterized in that: The fixed vertical plate (21), the connecting base (23), the first reinforcement plate (24) and the second reinforcement plate (25) are all made of aluminum alloy plates.

5. A combustion chamber outer casing high temperature vibration fatigue test device according to claim 4, characterized in that: The adapter plate (22) comprises an integrally formed and coaxial plate body and a plug-in protrusion, the outer diameter of the plug-in protrusion is smaller than the outer diameter of the plate body, a stop step is formed between the plate body and the plug-in protrusion, the plug-in protrusion is plug-fitted with a through opening on the fixed vertical plate (21), and the plate body is connected to the fixed vertical plate (21).

6. A combustion chamber outer casing high temperature vibration fatigue test device according to any one of claims 2 to 5, characterized in that: The heating device is a heating furnace (3), comprising a furnace body (31), a heating tube (32), a furnace body fixing section (33), a heating tube fixing plate (34), a heat insulation ring (35), a heat insulation plate (36), a temperature control thermocouple (37), a monitoring thermocouple (38), a cable (39) and a power supply interface (310); the furnace body fixing section (33) is located on the left side of the fixed vertical plate (21), the heating tube fixing plate (34) is located on the right side of the rear end flange (12), the left end of the furnace body (31) is fixed to the furnace body fixing section (33), and the right end is connected to the heating tube fixing plate (34); the heating tube (32) is arranged between the furnace body fixing section (33) and the heating tube fixing plate (34), and is arranged in a circular manner around the furnace body (31). The fixed vertical plate (21) and the adapter plate (22) are both provided with through openings for the furnace body (31) to pass through, the heat insulation ring (35) is arranged at the through opening to block the heat transfer between the furnace body (31) and the fixed vertical plate (21) and the adapter plate (22), the heat insulation plate (36) is arranged on the left side of the fixed vertical plate (21), and the outer diameter of the heat insulation plate (36) is larger than the outer diameter of the through opening; the temperature control thermocouple (37) and the monitoring thermocouple (38) are symmetrically arranged at an angle of 180 degrees on the outside of the heating tube fixing plate (34), and the temperature of the furnace body (31) is controlled and monitored; the power supply interface (310) is arranged on the furnace body fixing section (33), and is electrically connected to each group of heating tubes (32) through a cable (39).

7. A combustion chamber outer casing high temperature vibration fatigue test device according to claim 6, characterized in that: The adapter plate (22), the heat insulation ring (35) and the heat insulation plate (36) are all stainless steel plates, and the interior of the heat insulation plate (36) is filled with a fire-resistant heat insulation layer.

8. The combustion chamber outer casing high temperature vibration fatigue test device according to claim 6, characterized in that: The fixing frame (5) comprises an H-shaped frame (51), a fixing base (52), a connecting section (53), a fixing plate (54) and a third reinforcing plate (55); the bottom of the H-shaped frame (51) is welded and fixed to the fixing base (52), and the top is welded and connected to the connecting section (53) and the third reinforcing plate (55); the left side of the fixing plate (54) is fixed to the connecting section (53), and the right side is fixed to the heating furnace (3) and the heat insulation cover (4); the fixing base (52) is mounted on the fixing platform (63).

9. The combustion chamber outer casing high temperature vibration fatigue test device according to claim 6, characterized in that: The heating tube (32) is a quartz electric heating tube.

10. A combustion chamber outer casing high temperature vibration fatigue test device according to any one of claims 1 to 3, characterized in that: A fire-resistant heat-insulating layer is provided in the wall of the heat-insulating cover (4).

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