A high-temperature gas combustion chamber pressure measurement lead device and a high-temperature gas combustion chamber

Abstract

The application relates to a high-temperature gas combustion chamber pressure measurement leading device and a high-temperature gas combustion chamber. The high-temperature gas combustion chamber pressure measurement leading device comprises an erosion-resistant chute, a positioning block and a flange pressure measuring pipe. A first mounting hole penetrating through the middle layer is formed in the middle layer, the positioning block is sleeved in the first mounting hole, and both ends of the positioning block extend out from both ends of the first mounting hole. 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 sleeved in the first blind hole, 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 gas combustion chamber, the erosion-resistant chute is sleeved in the second mounting hole, and the second end of the positioning block is located in the erosion-resistant chute. The positioning block axially and circumferentially positions the inner layer and the middle layer, the first through hole and the second through hole are coaxially connected at all times, and the test holes of the inner layer and the middle layer are prevented from being dislocated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-temperature gas combustion chamber pressure measurement, and particularly relates to a high-temperature gas combustion chamber pressure measurement leading-out device and a high-temperature gas combustion chamber. BACKGROUND

[0002] The internal pressure of a high-temperature gas combustion chamber is a very important parameter for measuring whether combustion is sufficient and representing whether the equipment is working normally, so the pressure measurement of the high-temperature gas combustion chamber is very important in the product development stage and the formal operation stage. The existing high-temperature gas combustion chamber pressure generally adopts a multi-layer metal nesting form to play a heat insulation and corrosion resistance role. However, due to the different temperatures and different thermal expansion coefficients of the inner and outer layers of the high-temperature gas combustion chamber in the use process, the test holes of the wall surfaces of each layer will be misaligned. If the pressure measuring tube does not enter the inner cavity, the pressure measurement will be inaccurate. If the pressure measuring tube is deeply inserted into the inner cavity, the pressure measuring tube will be deformed and extruded by shear force under the action of thermal stress, and the pressure measuring tube will be damaged. SUMMARY

[0003] (I) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present application provides a high-temperature gas combustion chamber pressure measurement leading-out device and a high-temperature gas combustion chamber.

[0005] (II) Technical scheme

[0006] In order to achieve the above-mentioned purpose, the high-temperature gas combustion chamber pressure measurement leading-out device comprises an anti-erosion chute, a positioning block and a flange pressure measuring tube.

[0007] The middle layer of the high-temperature gas combustion chamber is provided with a first mounting hole penetrating the middle layer, the positioning block is sleeved in the first mounting hole, and both ends of the positioning block extend out from both ends of the first mounting hole.

[0008] A first blind hole is formed in the outer wall of the inner layer of the high-temperature gas combustion chamber, a first through hole penetrating the inner layer is formed in the bottom of the first blind hole, the first end of the positioning block is sleeved in the first blind hole, a second through hole is formed in the positioning block, and the first through hole and the second through hole are coaxially arranged.

[0009] The outer layer of the high-temperature gas combustion chamber is provided with a second mounting hole, the anti-erosion chute is sleeved in the second mounting hole, the slot opening of the anti-erosion chute faces the positioning block, the second end of the positioning block is located in the anti-erosion chute, and a third through hole is formed in the groove bottom of the anti-erosion chute.

[0010] The flange pressure measuring tube is communicated with the third through hole, and the pressure measuring tube of the flange pressure measuring tube is coaxially arranged with the third through hole.

[0011] Optionally, the first through hole, the second through hole, the cavity of the anti-erosion chute, the third through hole and the pressure measuring tube are sequentially communicated.

[0012] Optionally, a second blind hole is formed in the bottom of the anti-erosion chute, 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.

[0013] The third through hole is formed in the bottom of the second blind hole, and the second through hole is coaxially arranged with the third through hole.

[0014] Optionally, the flange plate of the flange pressure measuring tube is connected with the outer layer of the high-temperature gas combustion chamber, and a flange sealing ring is arranged between the flange plate of the flange pressure measuring tube and the outer layer of the high-temperature gas combustion chamber.

[0015] Further, the application also provides a high-temperature gas combustion chamber, which comprises a combustion chamber lining layer, an insulating layer, a metal shell and a high-temperature gas combustion chamber pressure measuring lead-out device as described above.

[0016] The insulating layer is sleeved on the combustion chamber lining layer, the metal shell is sleeved on the insulating layer, and the end faces of the combustion chamber lining layer, the insulating layer and the metal shell are flush.

[0017] A first mounting hole is formed in the insulating layer, a first blind hole is formed in the combustion chamber lining layer, a second mounting hole is formed in the metal shell, and a flange pressure measuring tube is connected with the metal shell.

[0018] Optionally, two groups of first sealing rings are arranged between the insulating layer and the metal shell, and the second mounting hole is located between the two groups of first sealing rings.

[0019] Optionally, the insulating layer comprises a front section insulating layer, a middle section insulating layer and a rear section insulating layer.

[0020] The first end of the front section insulating layer and the middle section insulating layer are overlapped with each other, the second end of the rear section insulating layer and the middle section insulating layer are overlapped with each other, and a second sealing ring is arranged at the overlapping position.

[0021] Optionally, a expansion joint is arranged between the front section insulating layer and the middle section insulating layer, and a expansion joint is arranged between the rear section insulating layer and the middle section insulating layer.

[0022] Optionally, the front section insulating layer is made of a winding woven insulating material, and the middle section insulating layer is made of a molded insulating material.

[0023] Optionally, a graphite sealing sleeve in the shape of a wedge is arranged between the rear section insulating layer and the combustion chamber lining layer.

[0024] (III) Beneficial Effects

[0025] The high-temperature gas combustion chamber pressure measurement leading device leads the high-temperature and high-pressure gas pressure in the high-temperature gas combustion chamber to the outside, and then connects a pressure transmitter to realize pressure measurement, so that the gas pressure value in the high-temperature gas combustion chamber can be obtained in real time, the pressure measurement precision is improved, and the situation that the measuring components are damaged due to being arranged in the high-temperature gas combustion chamber is avoided.

[0026] The positioning block is arranged in the first blind hole and the first mounting hole of the inner layer and the intermediate layer for positioning, and the inner layer and the intermediate layer are axially positioned and circumferentially positioned, and the first through hole and the second through hole are always coaxially connected, so that the situation that the test holes of the inner layer and the intermediate layer are dislocated due to different temperatures and different thermal expansion coefficients of the metal is avoided.

[0027] When the outer layer and the inner layer are dislocated due to different temperatures and different thermal expansion coefficients of the metal, the high-temperature and high-pressure gas can still enter the third through hole through the cavity of the anti-erosion chute, and then is led out to the outside through the pressure measuring tube of the flange pressure measuring tube, and then is connected to a pressure transmitter to realize pressure measurement, so that the situation that the pressure measuring tube is directly inserted into the inner cavity of the high-temperature gas combustion chamber, and the pressure measuring tube is deformed and extruded under the action of thermal stress, and the pressure measuring tube is damaged is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the high-temperature gas combustion chamber of the application;

[0029] Figure 2 It is a schematic diagram of the side view structure of the high-temperature gas combustion chamber of the application;

[0030] Figure 3 It is Figure 2 the sectional view of A-A;

[0031] Figure 4 It is Figure 3 the enlarged view of B.

[0032]

Explanation of reference signs

[0033] 1: high-temperature gas combustion chamber pressure measurement leading device; 11: anti-erosion chute; 12: positioning block; 13: flange pressure measuring tube; 14: flange sealing ring;

[0034] 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;

[0035] 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;

[0036] 221: front section heat insulation layer; 222: middle section heat insulation layer; 223: rear section heat insulation layer. DETAILED DESCRIPTION

[0037] In order to better explain the present application, so as to be understood, the present application is described in detail below by specific embodiments in combination with the accompanying drawings. Wherein, the orientation terms mentioned herein, such as "upper", "lower" and the like, are referred to the orientation of the drawings. Figure 3

[0038] Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so as to enable a more clear and thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0039] As shown in Figures 1 to 4 The present application provides a high-temperature gas combustion chamber pressure measurement lead-out device for leading out the high-temperature and high-pressure gas pressure inside the high-temperature gas combustion chamber 2 to the outside and then connecting to a pressure transmitter to realize pressure measurement, so as to facilitate real-time acquisition of the gas pressure value inside the high-temperature gas combustion chamber 2, improve the pressure measurement precision, and at the same time avoid the damage of the measurement components arranged inside the high-temperature gas combustion chamber 2. The high-temperature gas combustion chamber pressure measurement lead-out device 1 comprises an anti-erosion chute 11, a positioning block 12 and a flange pressure measuring pipe 13.

[0040] The high-temperature gas combustion chamber 2 adopts a multi-layer metal nested form, wherein, referring to Figure 4 ​The middle layer of the high-temperature gas combustion chamber 2 is provided with a first mounting hole 111 penetrating the middle layer, the positioning block 12 is sleeved in the first mounting hole 111, the positioning block 12 is fixed in the first mounting hole 111, and the two ends of the positioning block 12 respectively protrude from the two ends of the first mounting hole 111, forming a boss structure. A first blind hole 121 is formed in the outer wall of the inner layer of the high-temperature gas combustion chamber 2, and a first through hole 131 penetrating the inner layer is formed in the bottom of the first blind hole 121, and the first through hole 131 is used for connecting the high-temperature gas combustion chamber 2 and the first blind hole 121. The first end of the positioning block 12 is fixedly sleeved in the first blind hole 121, a second through hole 132 is formed in the positioning block 12, and the first through hole 131 and the second through hole 132 are coaxially arranged and connected. The positioning block 12 is installed in the first blind hole 121 and the first mounting hole 111 of the inner layer and the middle layer for positioning, and the inner layer and the middle layer are axially positioned and circumferentially positioned, the first through hole 131 and the second through hole 132 are always coaxially connected, and the misalignment of the test holes of the two wall surfaces due to different metal temperatures and different thermal expansion coefficients of the inner layer and the middle layer is avoided.

[0041] The outer layer of the high-temperature gas combustion chamber 2 is provided with a second mounting hole 112, and the anti-erosion chute 11 is sleeved in the second mounting hole 112. The notch of the anti-erosion chute 11 faces downward to the positioning block 12, the second end of the positioning block 12 is located in the anti-erosion chute 11, and the second through hole 132 is in communication with the cavity of the anti-erosion chute 11. The positioning block 12 is limited by the anti-erosion chute 11 and can only move axially relative to the anti-erosion chute 11, so as to circumferentially position the outer layer. The groove bottom of the anti-erosion chute 11 is provided with a third through hole 133, and the flange pressure measuring pipe 13 is sealedly connected to the orifice of the third through hole 133. The pressure measuring pipe of the flange pressure measuring pipe 13 is coaxially arranged with the third through hole 133 and is in communication with the third through hole 133. When the outer layer and the inner layer are misaligned due to different temperatures and different thermal expansion coefficients, the pressure measuring pipe of the flange pressure measuring pipe 13 and the first through hole 131, the high-temperature and high-pressure gas can still enter the third through hole 133 through the cavity of the anti-erosion chute 11, and then is introduced to the outside through the pressure measuring pipe of the flange pressure measuring pipe 13 and is connected to the pressure transmitter to realize pressure measurement.

[0042] The first through hole 131, the second through hole 132, the cavity of the anti-erosion chute 11, the third through hole 133 and the pressure measuring pipe are sequentially connected to form a complete pressure measuring pipe structure, avoiding the direct insertion of the pressure measuring pipe into the inner cavity of the high-temperature gas combustion chamber 2. Under the action of thermal stress, the pressure measuring pipe is deformed and extruded by shear force, and the pressure measuring pipe is damaged. The through holes on the first through hole 131, the second through hole 132, the third through hole 133 and the pressure measuring pipe are preferably circular holes with a diameter of 2 mm.

[0043] As Figure 4As shown, further, the anti-erosion chute 11 is provided with a second blind hole 122 at the bottom of the chute, 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 is coaxially arranged with the second blind hole 122. The top surface of the positioning block 12 is in the same plane as the bottom surface of the anti-erosion chute 11, and the third through hole 133 is arranged at the bottom of the second blind hole 122. When the outer layer and the intermediate layer are not dislocated, the positioning block 12 covers the aperture of the second blind hole 122, and the second through hole 132 is coaxially arranged with the third through hole 133; when the outer layer and the intermediate layer are dislocated, the positioning block 12 moves transversely relative to the anti-erosion chute 11, at this time, the aperture of the second blind hole 122 is exposed, and the high-temperature and high-pressure gas can enter the second blind hole 122 through the cavity of the anti-erosion chute 11, and then enter the pressure measuring pipe of the flange pressure measuring pipe 13 through the third through hole 133.

[0044] Preferably, the flange plate of the flange pressure measuring pipe 13 is connected with the outer layer of the high-temperature gas combustion chamber 2, and a flange sealing ring 14 is arranged between the flange plate of the flange pressure measuring pipe 13 and the outer layer of the high-temperature gas combustion chamber 2 to prevent the high-temperature and high-pressure gas from leaking through the gap between the flange plate of the flange pressure measuring pipe 13 and the outer layer of the high-temperature gas combustion chamber 2.

[0045] The application also provides a high-temperature gas combustion chamber, referring to Figure 3 which comprises a combustion chamber lining layer 21, an insulating layer, a metal shell 23 and the high-temperature gas combustion chamber pressure measuring lead-out device 1 described above. The insulating layer is sleeved on the combustion chamber lining layer 21, and the metal shell 23 is sleeved on the insulating layer, and the end faces of the combustion chamber lining layer 21, the insulating layer and the metal shell 23 are flush. The left end of the combustion chamber lining layer 21 is a fixed end, and a sealing groove is arranged on the end face and a sealing ring is installed, which contacts the butt joint surface of other parts to ensure air tightness, and the right end is a free end. The first mounting hole 111 is arranged on the insulating layer, the first blind hole 121 is arranged on the combustion chamber lining layer 21, the second mounting hole 112 is arranged on the metal shell 23, and the flange pressure measuring pipe 13 is connected with the metal shell 23.

[0046] Specifically, the metal shell 23 circumferential surface is provided with a flange, the sealing groove of the flange is provided with a flange sealing ring 14, the flange pressure measuring pipe 13 is connected with the flange on the metal shell 23, and is fixedly connected together by using a spring washer and a cross slot screw, so as to avoid that the high temperature and high pressure gas in the third through hole 133 leaks through the gap between the flange pressure measuring pipe 13 and the anti-erosion chute 11, at this time, the pressure measuring pipe of the flange pressure measuring pipe 13 and the third through hole 133 are coaxial; The flange is provided with a second mounting hole 112, the anti-erosion chute 11 is mounted in the second mounting hole 112 of the flange on the circumferential surface of the metal shell 23, and is mounted together with the positioning block 12, the positioning block 12 is limited by the anti-erosion chute 11 and can only move axially relative to the anti-erosion chute 11, so as to realize 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 moves to the right after thermal expansion to release thermal deformation, because the positioning block 12 limits between the middle section heat insulation layer 222 and the combustion chamber lining 21, the pressure measuring holes of the two are always concentric. At this time, the temperature of the metal shell 23 is still normal temperature, the pressure measuring holes of the metal shell 23 and the combustion chamber lining 21 are misaligned, the gas enters the cavity of the anti-erosion chute 11, and then the pressure is transmitted to the pressure measuring sensor through the flange pressure measuring pipe 13. The present application realizes the internal pressure measurement of the cylindrical combustion chamber at 2000K temperature, and can be repeatedly used for many times.

[0047] The first sealing ring 24 is arranged between the heat insulation layer and the metal shell 23, and the second mounting hole 112 is located between the two groups of first sealing rings 24, so as to effectively prevent the high temperature and high pressure gas in the anti-erosion chute 11 from leaking through the gap between the heat insulation layer and the metal shell 23.

[0048] As shown in Figure 3 The heat insulation layer includes a front section heat insulation layer 221, a middle section heat insulation layer 222 and a rear section heat insulation layer 223. The first end of the front section heat insulation layer 221 and the middle section heat insulation layer 222 are both stepped structures and partially overlap, the second end of the rear section heat insulation layer 223 and the middle section heat insulation layer 222 are both stepped structures and partially overlap, and the overlap portions are provided with a second sealing ring 25, so as to realize the radial sealing between the front section heat insulation layer 221 and the middle section heat insulation layer 222 and between the rear section heat insulation layer 223 and the middle section heat insulation layer 222. Further, the front section heat insulation layer 221 and the middle section heat insulation layer 222 are provided with expansion joints, and the rear section heat insulation layer 223 and the middle section heat insulation layer 222 are provided with expansion joints, so as to reserve space for thermal expansion of the front section heat insulation layer 221, the middle section heat insulation layer 222 and the rear section heat insulation layer 223.

[0049] Preferably, the combustion chamber lining 21 is made of a special high-temperature-resistant material. The front-stage thermal insulation layer 221 is made of a woven thermal insulation material, and is directly wound on the combustion chamber lining 21 and then machined, so as to ensure the sealing performance of the combustion chamber lining 21 and the front-stage thermal insulation layer 221 at the mounting surface. The middle-stage thermal insulation layer 222 is made of a molded thermal insulation material, is mounted with a sealing ring, and is then nested on the combustion chamber lining 21. The rear-stage thermal insulation layer 223 and the middle-stage thermal insulation layer 222 are radially sealed through the sealing ring.

[0050] As shown in Figure 3 The rear-stage thermal insulation layer 223 and the combustion chamber lining 21 are provided with a wedge-shaped graphite sealing sleeve 26. The outer diameter of the graphite sealing sleeve 26 is slightly larger than the hole of the rear-stage thermal insulation layer 223, and the assembly therebetween is an interference fit. The rear-stage thermal insulation layer 223 and the combustion chamber lining 21 are radially sealed through the graphite sealing sleeve 26. The graphite sealing sleeve 26 is annular in shape and wedge-shaped in cross section, and can be deformed while being resistant to high temperature. When being axially compressed, the graphite sealing sleeve 26 will be in contact with the inclined surface of the combustion chamber lining 21 and be deformed, and can still ensure effective radial sealing performance at high temperature.

[0051] In addition, the right end of the metal shell 23 is provided with a flange, the flange is provided with a sealing groove and a sealing ring, and the pressing plate is mounted on the right end of the flange and is connected and fixed by using a spring washer and an internal hexagonal head screw.

[0052] In the description of the present application, it should be understood that the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0053] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the present application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature is "over", "above" and "on top of" a second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature is "under", "below" and "underneath" a second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0055] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0056] Although the embodiments of the present application have been shown and described above, it is to be understood that the above-described embodiments are exemplary, and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

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) comprises an erosion-resistant chute (11), a positioning block (12), and a flange pressure measuring pipe (13); The middle layer of the high-temperature gas combustion chamber (2) is provided with a first mounting hole (111) penetrating the middle layer, the positioning block (12) is sleeved in the first mounting hole (111), and both ends of the positioning block (12) respectively extend from both ends of the first mounting hole (111); The outer wall of the inner layer of the high-temperature gas combustion chamber (2) is provided with a first blind hole (121), the bottom of the first blind hole (121) is provided with a first through hole (131) penetrating the inner layer, the first end of the positioning block (12) is sleeved in the first blind hole (121), the positioning block (12) is provided with a second through hole (132), and 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 erosion-resistant chute (11) is sleeved in the second mounting hole (112), the notch of the erosion-resistant chute (11) faces the positioning block (12), the second end of the positioning block (12) is located in the erosion-resistant chute (11), and the groove bottom of the erosion-resistant chute (11) is provided with a third through hole (133); The flange pressure measuring pipe (13) communicates with the third through hole (133), and the pressure measuring pipe of the flange pressure measuring pipe (13) is coaxially arranged with the third through hole (133); The first through hole (131), the second through hole (132), the cavity of the erosion-resistant chute (11), the third through hole (133), and the flange pressure measuring pipe are sequentially communicated; The groove bottom of the erosion-resistant chute (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), and the positioning block (12) is coaxially arranged with the second blind hole (122); The third through hole (133) is arranged at the bottom of the second blind hole (122), and the second through hole (132) is coaxially arranged with the third through hole (133).

2. The high temperature gas combustor pressure measurement leadthrough of claim 1, wherein, The flange plate of the flange pressure measuring pipe (13) is connected with the outer layer of the high-temperature gas combustion chamber (2), and a flange sealing ring (14) is arranged between the flange plate of the flange pressure measuring pipe (13) and the outer layer of the high-temperature gas combustion chamber (2).

3. A high temperature gas combustion chamber, characterized by The high-temperature gas combustion chamber (2) comprises a combustion chamber lining layer (21), an insulating layer, a metal shell (23), and the high-temperature gas combustion chamber pressure measurement lead-out device (1) as claimed in claim 1 or 2; The insulating layer is sleeved on the combustion chamber lining layer (21), the metal shell (23) is sleeved on the insulating layer, and the end faces of the combustion chamber lining layer (21), the insulating layer, and the metal shell (23) are flush; The first mounting hole (111) is arranged on the insulating layer, the first blind hole (121) is arranged on the combustion chamber lining layer (21), the second mounting hole (112) is arranged on the metal shell (23), and the flange pressure measuring pipe (13) is connected with the metal shell (23).

4. The high temperature gas combustion chamber of claim 3, wherein Two groups of first sealing rings (24) are arranged between the thermal insulation layer and the metal shell (23), and the second mounting hole (112) is located between the two groups of first sealing rings (24).

5. The high temperature gas combustion chamber of claim 3, wherein The thermal insulation layer comprises a front thermal insulation layer (221), a middle thermal insulation layer (222) and a rear thermal insulation layer (223). The front thermal insulation layer (221) and the first end of the middle thermal insulation layer (222) are mutually overlapped, and the rear thermal insulation layer (223) and the second end of the middle thermal insulation layer (222) are mutually overlapped, and the overlapped parts are provided with second sealing rings (25).

6. The high temperature gas combustion chamber of claim 5, wherein The front thermal insulation layer (221) and the middle thermal insulation layer (222) are provided with expansion joints, and the rear thermal insulation layer (223) and the middle thermal insulation layer (222) are provided with expansion joints.

7. The high temperature gas combustion chamber of claim 5, wherein The front thermal insulation layer (221) is made of a winding woven thermal insulation material, and the middle thermal insulation layer (222) is made of a molded thermal insulation material.

8. The high temperature gas combustion chamber of claim 5, wherein, The rear thermal insulation layer (223) and the combustion chamber lining layer (21) are provided with a wedge-shaped graphite sealing sleeve (26).

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