High-temperature gas combustion chamber pressure measurement leading-out device and high-temperature gas combustion chamber

Abstract

The invention relates to a high-temperature gas combustion chamber pressure measurement leading-out device and a high-temperature gas combustion chamber. The high-temperature gas combustion chamber pressure measurement leading-out device comprises an anti-erosion sliding groove, a positioning block and a flange pressure measurement pipe. The middle layer is provided with a first mounting hole penetrating through the middle layer, the positioning block is sleeved with the first mounting hole, and the two ends of the positioning block extend out of the two ends of the first mounting hole respectively. A first blind hole is formed in the outer wall of the inner layer, a first through hole is formed in the bottom of the first blind hole, the first end of the positioning block is arranged in the first blind hole in a sleeved mode, a second through hole is formed in the positioning block, and the first through hole and the second through hole are coaxially arranged. A second mounting hole is formed in the outer layer of the high-temperature fuel gas combustion chamber, the anti-erosion sliding groove is arranged in the second mounting hole in a sleeved mode, and the second end of the positioning block is located in the anti-erosion sliding groove. The positioning block carries out axial positioning and circumferential positioning on the inner layer and the middle layer, and the first through hole and the second through hole are always kept coaxially connected, so that the test holes of the inner layer and the middle layer are prevented from being misplaced.

Description

Technical Field

[0001] This invention relates to the field of high-temperature gas combustion chamber pressure measurement technology, and in particular to a high-temperature gas combustion chamber pressure measurement lead-out device and a high-temperature gas combustion chamber. Background Technology

[0002] The internal pressure of a high-temperature gas combustion chamber is a crucial parameter for measuring the completeness of combustion and characterizing the proper functioning of the equipment. Therefore, pressure measurement of high-temperature gas combustion chambers is of paramount importance both during product development and operational phases. Existing high-temperature gas combustion chambers typically employ a multi-layered metal nesting structure for insulation and corrosion resistance. However, due to differences in temperature and thermal expansion coefficients between the inner and outer metal layers during operation, misalignment of the test holes on each layer's surface can occur. If the pressure measuring tube does not enter the inner cavity, inaccurate pressure measurements will result. If the pressure measuring tube extends into the inner cavity, it will be subjected to shear force under thermal stress, causing deformation and compression, ultimately damaging the pressure measuring tube. Summary of the Invention

[0003] (a) Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a high-temperature gas combustion chamber pressure measurement lead-out device and a high-temperature gas combustion chamber.

[0004] (II) Technical Solution To achieve the above objectives, the high-temperature gas combustion chamber pressure measurement lead-out device of the present invention includes an anti-erosion groove, a positioning block, and a flange pressure measuring tube. The intermediate layer of the high-temperature gas combustion chamber has a first mounting hole that penetrates the intermediate layer. The positioning block is fitted into the first mounting hole, and the two ends of the positioning block extend out from the two ends of the first mounting hole, respectively. A first blind hole is provided on the outer wall of the inner layer of the high-temperature gas combustion chamber, and a first through hole is provided at the bottom of the first blind hole, penetrating the inner layer. The first end of the positioning block is sleeved in the first blind hole, and a second through hole is provided on the positioning block. The first through hole and the second through hole are coaxially arranged. The outer layer of the high-temperature gas combustion chamber is provided with a second mounting hole, the anti-erosion groove is fitted into the second mounting hole, the groove opening of the anti-erosion groove faces the positioning block, the second end of the positioning block is located in the anti-erosion groove, and a third through hole is provided at the bottom of the anti-erosion groove. The flange pressure testing tube is connected to the third through hole, and the pressure testing tube of the flange pressure testing tube is coaxially arranged with the third through hole.

[0005] Optionally, the first through hole, the second through hole, the cavity of the anti-erosion groove, the third through hole, and the pressure measuring tube are connected in sequence.

[0006] Optionally, the bottom of the anti-erosion groove is provided with a second blind hole, the inner diameter of the second blind hole is the same as the outer diameter of the positioning block, and the positioning block is coaxially arranged with the second blind hole; The third through hole is opened at the bottom of the second blind hole, and the second through hole and the third through hole are coaxially arranged.

[0007] Optionally, the flange of the flange pressure measuring pipe is connected to the outer layer of the high-temperature gas combustion chamber, and a flange sealing ring is provided between the flange of the flange pressure measuring pipe and the outer layer of the high-temperature gas combustion chamber.

[0008] Furthermore, the present invention also provides a high-temperature gas combustion chamber, which includes a combustion chamber lining, an insulation layer, a metal shell, and a high-temperature gas combustion chamber pressure measurement lead-out device as described above; The heat insulation layer is fitted onto the combustion chamber liner, and the metal shell is fitted onto the heat insulation layer. The end faces of the combustion chamber liner, the heat insulation layer, and the metal shell are flush. The first mounting hole is formed on the insulation layer, the first blind hole is formed on the combustion chamber lining, the second mounting hole is formed on the metal shell, and the flange pressure measuring pipe is connected to the metal shell.

[0009] Optionally, two sets of first sealing rings are provided between the insulation layer and the metal shell, and the second mounting hole is located between the two sets of first sealing rings.

[0010] Optionally, the insulation layer includes a front insulation layer, a middle insulation layer, and a rear insulation layer; The front insulation layer overlaps with the first end of the middle insulation layer, and the rear insulation layer overlaps with the second end of the middle insulation layer. A second sealing ring is provided at each overlap.

[0011] Optionally, an expansion joint is provided between the front insulation layer and the middle insulation layer, and an expansion joint is provided between the rear insulation layer and the middle insulation layer.

[0012] Optionally, the front insulation layer is made of wound woven insulation material, and the middle insulation layer is made of molded insulation material.

[0013] Optionally, a wedge-shaped graphite sealing sleeve is provided between the rear insulation layer and the combustion chamber lining.

[0014] (III) Beneficial Effects The high-temperature gas combustion chamber pressure measurement lead-out device leads the high-temperature and high-pressure gas pressure inside the high-temperature gas combustion chamber to the outside and connects it to a pressure transmitter to realize pressure measurement. This facilitates the real-time acquisition of the gas pressure value inside the high-temperature gas combustion chamber, improves the pressure measurement accuracy, and avoids the situation where the measuring components are placed inside the high-temperature gas combustion chamber and are damaged.

[0015] The positioning block is installed in the first blind hole and the first mounting hole of the inner layer and the middle layer for positioning, and performs axial and circumferential positioning of the inner layer and the middle layer. The first through hole and the second through hole are always coaxially connected, which avoids the misalignment of the test holes on the two walls due to the different metal temperatures and different coefficients of thermal expansion of the inner layer and the middle layer.

[0016] When misalignment occurs between the pressure measuring tube and the first through hole due to temperature and thermal expansion differences between the outer and inner layers, high-temperature, high-pressure gas can still enter the third through hole through the cavity of the anti-erosion groove. The gas then exits through the pressure measuring tube of the flange pressure measuring tube to the outside and is connected to the pressure transmitter for pressure measurement. This avoids the situation where the pressure measuring tube is directly inserted into the high-temperature combustion chamber of the gas, where it would be deformed and squeezed under thermal stress, potentially damaging the pressure measuring tube. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the high-temperature gas combustion chamber of the present invention; Figure 2 This is a side view of the high-temperature gas combustion chamber of the present invention. Figure 3 for Figure 2 Sectional view at point AA; Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0018] [Explanation of Labels in the Attached Image] 1: High-temperature gas combustion chamber pressure measurement lead-out device; 11: Anti-erosion groove; 12: Positioning block; 13: Flange pressure measuring tube; 14: Flange sealing ring; 111: First mounting hole; 112: Second mounting hole; 121: First blind hole; 122: Second blind hole; 131: First through hole; 132: Second through hole; 133: Third through hole; 2: High-temperature gas combustion chamber; 21: Combustion chamber lining; 23: Metal shell; 24: First sealing ring; 25: Second sealing ring; 26: Graphite sealing sleeve; 221: Front insulation layer; 222: Middle insulation layer; 223: Rear insulation layer. Detailed Implementation

[0019] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. In this document, directional terms such as "upper," "lower," etc., are used interchangeably with respect to... Figure 3 The orientation is used as a reference.

[0020] While exemplary embodiments of the invention are shown in the accompanying drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention can be understood more clearly and thoroughly, and that the scope of the invention can be fully conveyed to those skilled in the art.

[0021] like Figures 1 to 4 As shown, this invention provides a high-temperature gas combustion chamber pressure measurement lead-out device, used to lead out the high-temperature, high-pressure gas pressure inside the high-temperature gas combustion chamber 2 to the outside and connect it to a pressure transmitter for pressure measurement. This facilitates real-time acquisition of the gas pressure value inside the high-temperature gas combustion chamber 2, improves pressure measurement accuracy, and avoids damage to the measuring components located inside the high-temperature gas combustion chamber 2. The high-temperature gas combustion chamber pressure measurement lead-out device 1 includes an anti-erosion groove 11, a positioning block 12, and a flange pressure measuring tube 13.

[0022] The high-temperature gas combustion chamber 2 adopts a multi-layered metal nesting structure, wherein, see Figure 4 The high-temperature gas combustion chamber 2 has a first mounting hole 111 penetrating the middle layer. A positioning block 12 is fitted into the first mounting hole 111 and fixed in the first mounting hole 111. Both ends of the positioning block 12 extend from both ends of the first mounting hole 111, forming a boss structure. A first blind hole 121 is formed on the outer wall of the inner layer of the high-temperature gas combustion chamber 2. A first through hole 131 penetrating the inner layer is formed at the bottom of the first blind hole 121. The first through hole 131 is used to connect the high-temperature gas combustion chamber 2 and the first blind hole 121. The first end of the positioning block 12 is fixedly fitted into the first blind hole 121. A second through hole 132 is formed on the positioning block 12. The first through hole 131 and the second through hole 132 are coaxially arranged and interconnected. The positioning block 12 is installed in the first blind hole 121 and the first mounting hole 111 of the inner and middle layers for positioning, and performs axial and circumferential positioning of the inner and middle layers. The first through hole 131 and the second through hole 132 are always coaxially connected, which avoids the misalignment of the test holes on the two walls due to the different metal temperatures and different coefficients of thermal expansion of the inner and middle layers.

[0023] The outer layer of the high-temperature gas combustion chamber 2 has a second mounting hole 112. An anti-erosion groove 11 is fitted into the second mounting hole 112, with the groove opening of the anti-erosion groove 11 facing downwards towards the positioning block 12. The second end of the positioning block 12 is located within the anti-erosion groove 11. A second through hole 132 communicates with the cavity of the anti-erosion groove 11. The positioning block 12, restricted by the anti-erosion groove 11, can only move axially relative to the anti-erosion groove 11, thus providing circumferential positioning of the outer layer. A third through hole 133 is provided at the bottom of the anti-erosion groove 11. A flange pressure measuring pipe 13 is sealed and connected to the opening of the third through hole 133. The pressure measuring pipe of the flange pressure measuring pipe 13 is coaxially arranged with and communicates with the third through hole 133. When the outer and inner layers are misaligned due to temperature and thermal expansion coefficient differences, the pressure measuring tube of the flange pressure measuring tube 13 and the first through hole 131 are misaligned. High temperature and high pressure gas can still enter the third through hole 133 through the cavity of the anti-erosion groove 11, and then be led out to the outside through the pressure measuring tube of the flange pressure measuring tube 13 and connected to the pressure transmitter to realize pressure measurement.

[0024] The first through hole 131, the second through hole 132, the cavity of the anti-erosion groove 11, the third through hole 133, and the pressure measuring tube are sequentially connected to form a complete pressure measuring pipe structure. This avoids the situation where the pressure measuring tube is directly inserted into the inner cavity of the high-temperature gas combustion chamber 2, and deformed or squeezed under thermal stress, thus preventing damage to the pressure measuring tube. The first through hole 131, the second through hole 132, the third through hole 133, and the through hole on the pressure measuring tube are preferably circular holes with a diameter of 2mm.

[0025] like Figure 4 As shown, further, a second blind hole 122 is provided at the bottom of the anti-erosion groove 11. The inner diameter of the second blind hole 122 is the same as the outer diameter of the positioning block 12, and the positioning block 12 and the second blind hole 122 are coaxially arranged. The top surface of the positioning block 12 and the bottom surface of the anti-erosion groove 11 are located in the same plane. A third through hole 133 is opened at the bottom of the second blind hole 122. When the outer layer and the middle layer are not misaligned, the positioning block 12 covers the opening of the second blind hole 122, and the second through hole 132 and the third through hole 133 are coaxially arranged. When the outer layer and the middle layer are misaligned, the positioning block 12 moves laterally relative to the anti-erosion groove 11. At this time, the opening of the second blind hole 122 is exposed, and high-temperature and high-pressure gas can enter the second blind hole 122 through the cavity of the anti-erosion groove 11, and then enter the pressure measuring tube of the flange pressure measuring tube 13 through the third through hole 133.

[0026] Preferably, the flange of the flange pressure measuring pipe 13 is connected to the outer layer of the high-temperature gas combustion chamber 2, and a flange sealing ring 14 is provided between the flange of the flange pressure measuring pipe 13 and the outer layer of the high-temperature gas combustion chamber 2 to prevent high-temperature and high-pressure gas from leaking through the gap between the flange of the flange pressure measuring pipe 13 and the outer layer of the high-temperature gas combustion chamber 2.

[0027] The present invention also provides a high-temperature gas combustion chamber, see [link to relevant documentation]. Figure 3 It includes a combustion chamber liner 21, an insulation layer, a metal shell 23, and the aforementioned high-temperature gas combustion chamber pressure measurement lead-out device 1. The insulation layer is fitted onto the combustion chamber liner 21, and the metal shell 23 is fitted onto the insulation layer. The end faces of the combustion chamber liner 21, the insulation layer, and the metal shell 23 are flush. The left end of the combustion chamber liner 21 is a fixed end, with a sealing groove and a sealing ring installed on its end face, contacting the mating surfaces of other parts to ensure airtightness. The right end is a free end. A first mounting hole 111 is formed in the insulation layer, a first blind hole 121 is formed in the combustion chamber liner 21, and a second mounting hole 112 is formed in the metal shell 23. The flange pressure measuring pipe 13 is connected to the metal shell 23.

[0028] Specifically, a flange is provided on the circumferential surface of the metal shell 23, and a flange sealing ring 14 is installed in the sealing groove of the flange. The flange pressure measuring tube 13 is connected to the flange on the metal shell 23 and is fixed together with a spring washer and a cross-slot screw to prevent the high temperature and high pressure gas in the third through hole 133 from leaking through the gap between the flange pressure measuring tube 13 and the anti-erosion groove 11. At this time, the pressure measuring tube of the flange pressure measuring tube 13 and the third through hole 133 are coaxial. A second mounting hole 112 is provided on the flange, and the anti-erosion groove 11 is installed in the second mounting hole 112 of the flange on the circumferential surface of the metal shell 23 and is installed together with the positioning block 12. The positioning block 12 is restricted by the anti-erosion groove 11 and can only move axially relative to the anti-erosion groove 11, thereby realizing the circumferential positioning of the metal shell 23. When the temperature inside the combustion chamber rises, the right end of the combustion chamber lining 21 expands due to heat and moves to the right, releasing thermal deformation. Because of the positioning block 12 between the middle insulation layer 222 and the combustion chamber lining 21, their pressure measuring holes remain concentric. At this time, the temperature of the metal shell 23 remains at room temperature. The pressure measuring holes of the metal shell 23 and the combustion chamber lining 21 are misaligned, allowing the combustion gas to enter the cavity of the anti-erosion groove 11. The pressure is then transmitted to the pressure sensor via the flange pressure measuring pipe 13. This invention enables pressure measurement inside a cylindrical combustion chamber at 2000K and can be reused multiple times.

[0029] Two sets of first sealing rings 24 are provided between the insulation layer and the metal shell 23. The second mounting hole 112 is located between the two sets of first sealing rings 24, which effectively prevents the high temperature and high pressure gas in the anti-erosion groove 11 from leaking through the gap between the insulation layer and the metal shell 23.

[0030] like Figure 3As shown, the insulation layer includes a front insulation layer 221, a middle insulation layer 222, and a rear insulation layer 223. The first ends of the front insulation layer 221 and the middle insulation layer 222 are both stepped structures with partial overlap. The second ends of the rear insulation layer 223 and the middle insulation layer 222 are also stepped structures with partial overlap. A second sealing ring 25 is provided at each overlap to achieve radial sealing between the front insulation layer 221 and the middle insulation layer 222, and between the rear insulation layer 223 and the middle insulation layer 222. Furthermore, an expansion joint is provided between the front insulation layer 221 and the middle insulation layer 222, and between the rear insulation layer 223 and the middle insulation layer 222, to allow space for thermal expansion of the front insulation layer 221, the middle insulation layer 222, and the rear insulation layer 223.

[0031] Preferably, the combustion chamber liner 21 is made of a specially formulated high-temperature resistant material. The front insulation layer 221 is made of wound-woven insulation material, directly wound onto the combustion chamber liner 21 as a mandrel, and then machined, which ensures the sealing performance of the combustion chamber liner 21 and the front insulation layer 221 at the mounting surface. The middle insulation layer 222 is made of molded insulation material, fitted with a sealing ring, and then nested onto the combustion chamber liner 21. The rear insulation layer 223 and the middle insulation layer 222 achieve radial sealing through the sealing ring.

[0032] like Figure 3 As shown, a wedge-shaped graphite sealing sleeve 26 is provided between the rear insulation layer 223 and the combustion chamber liner 21. The outer diameter of the graphite sealing sleeve 26 is slightly larger than the hole of the rear insulation layer 223, and the assembly between the two is an interference fit; the rear insulation layer 223 and the combustion chamber liner 21 are radially sealed through the graphite sealing sleeve 26; the graphite sealing sleeve 26 is annular with a wedge-shaped cross-section, which can withstand high temperatures while allowing deformation. When axially compressed, it will come into contact with the inclined surface of the combustion chamber liner 21 and deform, thus ensuring effective radial sealing performance even at high temperatures.

[0033] In addition, a flange is provided at the right end of the metal housing 23. A sealing groove is provided on the flange and a sealing ring is provided inside. The pressure plate is installed on the flange at the right end and is connected and fixed by spring washers and internal hex head screws.

[0034] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A high-temperature gas combustion chamber pressure measurement lead-out device, characterized in that, The high-temperature gas combustion chamber pressure measurement lead-out device (1) includes an anti-erosion groove (11), a positioning block (12), and a flange pressure measuring tube (13). The intermediate layer of the high-temperature gas combustion chamber (2) is provided with a first mounting hole (111) that penetrates the intermediate layer. The positioning block (12) is sleeved in the first mounting hole (111), and the two ends of the positioning block (12) extend from the two ends of the first mounting hole (111). A first blind hole (121) is provided on the outer wall of the inner layer of the high-temperature gas combustion chamber (2). A first through hole (131) penetrating the inner layer is provided at the bottom of the first blind hole (121). The first end of the positioning block (12) is sleeved in the first blind hole (121). A second through hole (132) is provided on the positioning block (12). The first through hole (131) and the second through hole (132) are coaxially arranged. The outer layer of the high-temperature gas combustion chamber (2) is provided with a second mounting hole (112). The anti-erosion groove (11) is fitted into the second mounting hole (112). The groove opening of the anti-erosion groove (11) faces the positioning block (12). The second end of the positioning block (12) is located in the anti-erosion groove (11). The bottom of the anti-erosion groove (11) is provided with a third through hole (133). The flange pressure measuring tube (13) is connected to the third through hole (133), and the pressure measuring tube of the flange pressure measuring tube (13) is coaxially arranged with the third through hole (133).

2. The high-temperature gas combustion chamber pressure measurement lead-out device as described in claim 1, characterized in that, The first through hole (131), the second through hole (132), the cavity of the anti-erosion groove (11), the third through hole (133), and the flange pressure measuring pipe are connected in sequence.

3. The high-temperature gas combustion chamber pressure measurement lead-out device as described in claim 1, characterized in that, The bottom of the anti-erosion groove (11) is provided with a second blind hole (122). The inner diameter of the second blind hole (122) is the same as the outer diameter of the positioning block (12). The positioning block (12) and the second blind hole (122) are coaxially arranged. The third through hole (133) is opened at the bottom of the second blind hole (122), and the second through hole (132) and the third through hole (133) are coaxially arranged.

4. The high-temperature gas combustion chamber pressure measurement lead-out device as described in claim 1, characterized in that, The flange of the flange pressure measuring pipe (13) is connected to the outer layer of the high-temperature gas combustion chamber (2), and a flange sealing ring (14) is provided between the flange of the flange pressure measuring pipe (13) and the outer layer of the high-temperature gas combustion chamber (2).

5. A high-temperature gas combustion chamber, characterized in that, The high-temperature gas combustion chamber (2) includes a combustion chamber lining (21), an insulation layer, a metal shell (23), and a high-temperature gas combustion chamber pressure measurement lead-out device (1) as described in any one of claims 1-4. The heat insulation layer is fitted onto the combustion chamber liner (21), and the metal shell (23) is fitted onto the heat insulation layer. The end faces of the combustion chamber liner (21), the heat insulation layer, and the metal shell (23) are flush. The first mounting hole (111) is opened on the insulation layer, the first blind hole (121) is opened on the combustion chamber lining (21), the second mounting hole (112) is opened on the metal shell (23), and the flange pressure measuring pipe (13) is connected to the metal shell (23).

6. The high-temperature gas combustion chamber as described in claim 5, characterized in that, Two sets of first sealing rings (24) are provided between the insulation layer and the metal shell (23), and the second mounting hole (112) is located between the two sets of first sealing rings (24).

7. The high-temperature gas combustion chamber as described in claim 5, characterized in that, The insulation layer includes a front insulation layer (221), a middle insulation layer (222), and a rear insulation layer (223). The first end of the front insulation layer (221) overlaps with the first end of the middle insulation layer (222), and the second end of the rear insulation layer (223) overlaps with the second end of the middle insulation layer (222). A second sealing ring (25) is provided at each overlap.

8. The high-temperature gas combustion chamber as described in claim 7, characterized in that, An expansion joint is provided between the front insulation layer (221) and the middle insulation layer (222), and an expansion joint is provided between the rear insulation layer (223) and the middle insulation layer (222).

9. The high-temperature gas combustion chamber as described in claim 7, characterized in that, The front insulation layer (221) is made of wound woven insulation material, and the middle insulation layer (222) is made of molded insulation material.

10. The high-temperature gas combustion chamber as described in claim 7, characterized in that, A wedge-shaped graphite sealing sleeve (26) is provided between the rear insulation layer (223) and the combustion chamber lining (21).

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