Support configuration design method and support configuration of the center combustion test model

Abstract

This invention discloses a support configuration design method and configuration for a central combustion test model, relating to the fields of aerospace propulsion theory and engineering technology. The method includes: S1, designing a cylindrical body with connecting flanges that fully surrounds the test model, wherein multiple bases are arranged circumferentially around the cylindrical body to mate with the test model; S2, designing support protective sleeves that mate with each base, and determining the flow diameter of the test fluid within each support protective sleeve based on the required test fluid flow rate inside the central combustion test model; S3, converting the radial sealing groove diameter D7 at various points in the support configuration; S4, designing the parameters of the cooling channels in the support protective sleeves; S5, determining the number of bases and cylindrical body parameters, and designing pressure blocks to fix each support protective sleeve to its corresponding base. The support configuration of this invention employs an optimized design, enabling long-term stable operation under complex high-temperature environments and avoiding support failure due to thermal deformation or oxidation damage.

Description

Technical Field

[0001] This invention relates to the field of aerospace propulsion theory and engineering technology. More specifically, this invention relates to a support configuration design method and support configuration for a center combustion test model. Background Technology

[0002] In the research and development of thermodynamic systems such as aero-engines, gas turbines, and internal combustion engines, center combustion technology has attracted much attention due to its potential to achieve efficient combustion and low emissions. Meanwhile, center combustion testing is an important means of studying the internal flow field characteristics and combustion stability of the combustion chamber. To achieve accurate simulation and measurement of the combustion process, the test model needs to maintain stable operation under high temperature, high pressure, and complex flow conditions. As a key component of the test model, the design of the support structure directly affects the accuracy and reliability of the test.

[0003] However, existing support structures still have the following problems in practical applications: First, in high-temperature environments, traditional metal materials are prone to thermal deformation or strength reduction, resulting in insufficient support stability; second, some support structures are designed to be complex and large in size, making them inconvenient to operate during installation and disassembly, and may cause additional interference to the combustion flow field, affecting the accuracy of test data; in addition, existing support structures often cannot meet the requirements of lightweighting while ensuring strength, increasing the overall weight and cost of the test system.

[0004] Therefore, designing a support configuration and method that can meet the requirements for stable support under high-temperature environments while minimizing interference with the combustion flow field has become a pressing technical challenge. This invention proposes a novel support structure to address this problem, aiming to achieve efficient and stable support through optimized design, thus providing reliable technical support for combustion experiments. Summary of the Invention

[0005] One object of the present invention is to solve at least the above-mentioned problems and / or defects, and to provide at least the advantages described below.

[0006] To achieve these objectives and other advantages of the present invention, a method for designing the support configuration of a center combustion test model is provided, comprising: S1. Design a cylindrical body with connecting flanges that can fully surround the test model, wherein the cylindrical body is provided with multiple bases that cooperate with the test model in the circumferential direction; S2. Design of support and protective sleeves that match each base; S3. Calculate the diameter D7 of the radial sealing groove at various points in the support configuration; S4. Design the parameters of the cooling channel in the support protective sleeve. The cooling channel includes the following according to the flow direction of the coolant: cooling channel inlet, semi-circular manifold I, cooling tank I, circular manifold, cooling tank II, semi-circular manifold II, and cooling channel outlet. S5. Based on the parameters of the cooling channel, determine the number of bases m and the cylinder parameters, and design pressure blocks to fix each support protective sleeve on the corresponding base. Based on the required test liquid flow rate inside the central combustion test model, determine the flow pipe diameter of the test liquid in each pressure block. In S4, the design method for each parameter of the cooling channel is as follows: S40. The inner diameter D8 of the cooling channel inlet is converted using the following formula, and the diameter D9 of the cooling channel outlet is the same as D8: ; In the above formula, ρ 1 represents the density of the coolant. C P The specific heat capacity of the coolant. V P This is the normal flow rate of the coolant. This is the allowable temperature rise of the coolant. Q This is the heat load obtained by integrating the heated surfaces on the support sleeve; S41. Obtain the total number n of cooling grooves in a single support protective sleeve, the diameter D11 of a single cooling groove, and the diameter D12 of the distribution circle enclosed by cooling groove I and cooling groove II using the following formulas: ; ; ; S42. Let the height of each semicircular manifold be H1, and H1 = 1.2D9, and the width T1 of each semicircular manifold be equal to the diameter D11 of a single cooling tank. S43. Obtain the height H2 and width T2 of the circular manifold using the following formulas: H2 = 2 × D11; T2=π×D8 2 / 4×H2.

[0007] Preferably, in S2, the flow diameter of the test liquid is obtained by spatially combining the through-hole channel I of the through-block and the base and the external transmission pipe that cooperates with the through-hole channel I, and the through-hole channel I is spatially connected to the central combustion point of the test model; The inner diameter D3 of the external transmission pipe is the same as the diameter D4 of the through channel II, and D3 is obtained by the following formula: ; In the above formula,v The test solution was at its normal flow rate. q The flow rate of the test liquid required for combustion at the center of the test model.

[0008] Preferably, in S5, the diameter D5 of the extended boss on the pressure block that mates with the through channel I is characterized by the following formula: ; In the above formula, P is the pressure of the test liquid. Y represents the required stress for the selected material, and Y is the temperature correction factor for the material at the test temperature.

[0009] Preferably, in S5, if the length of the test model is L1 and the diameter is D1, then the inner diameter D2 of the cylinder is characterized by the following formula: ; In the above formula, m D13 is the number of bases, and D13 is the outer diameter of the protective boss in the protective sleeve, and D13 = 2D12 - D7; The length L2 of the cylinder is represented by the following formula: ; In the above formula, ρ 2 represents the airflow density in the experiment. U The airflow velocity for the experiment, μ The viscosity of the gas flow in the experiment is denoted as .

[0010] Preferably, the number of the bases m The following formula must be satisfied: ; In the above formula, G is the total mass of the experimental model. S represents the required stress for the selected material, and S is the safety factor.

[0011] A support configuration for a center-burning test model includes: The housing includes: a cylinder for fixing the test model, flanges disposed on both sides of the cylinder for connecting the test platform, and multiple bases disposed circumferentially on the cylinder; A protective sleeve extending into each base for thermal protection of the connection parts, the protective sleeve including flange I and a protective boss provided on flange I; The pressure block extends into the corresponding protective sleeve to construct the test liquid flow channel. The pressure block includes a flange II and an extended boss disposed on the flange II. The transfer tube introduces the test solution into the test solution flow channel; Sealing mechanisms are provided between the base and the protective sleeve, and between the protective sleeve and the pressure block; The protective sleeve has a cooling channel built inside, and the cooling channel is connected to the external coolant circulation module through the cooling channel inlet and the cooling channel outlet.

[0012] Preferably, the cooling channel includes: Cooling channel inlet I, which is matched with the cooling channel inlet; Cooling tank I is arranged vertically in space to vertically transport the coolant in the semi-circular manifold I; A circular confluence cavity that is spatially connected to cooling tank I; Cooling tank II of semi-circular manifold II is arranged vertically to the circular manifold in space to vertically transport the coolant in the circular manifold. The semi-circular manifold II is spatially connected to the cooling channel outlet; The cooling channel inlet, semi-circular manifold I, semi-circular manifold II, and cooling channel outlet are all arranged on flange I, while the circular manifold, cooling tank I, and cooling tank II are arranged on the protective boss.

[0013] Preferably, the protective sleeve is provided with a through channel I for the pressure block to extend into; The upper end face of the flange I is provided with an axial sealing groove II for installing the sealing mechanism, and the lower end face of the flange I is provided with a pressure ring I that limits the sealing mechanism to the base. A pressure ring II is provided on the lower end face of the protective boss to limit the sealing mechanism; At least one radial sealing groove is provided on the inner wall of the through channel I.

[0014] Preferably, the pressure block is provided with a through channel II for constructing the test liquid flow channel; The flange II is provided with a pipe connection hole for installing the transmission pipe at the position where it mates with the through channel II; The lower surface of flange II is provided with a pressure ring III that confines the sealing mechanism to flange I.

[0015] The present invention has at least the following beneficial effects: Firstly, the support structure of this invention uses high-temperature resistant materials and optimized design, which can ensure long-term stable operation in complex high-temperature environments and avoid support failure caused by thermal deformation or oxidation damage.

[0016] Third, the support configuration of the present invention supports modular design and flexible adjustment, is suitable for center combustion models of different sizes and shapes, and is easy to disassemble and maintain.

[0017] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall assembly of the support configuration of the central combustion test model during the design of this invention; Figure 2 A half-sectional schematic diagram of the support configuration of the central combustion test model during the design of this invention; Figure 3 When designing this invention, Figure 2 Enlarged view of the area within the middle circle; Figure 4 This is a schematic diagram illustrating the principle of the cooling channel of the present invention; Figure 5 This is a schematic diagram of the structure of the outer shell of the supporting configuration of the present invention; Figure 6 This is a schematic diagram of the structure of the outer protective sleeve of the support configuration of the present invention; Figure 7 This is a half-section schematic diagram of the outer protective sleeve of the support configuration of the present invention; Figure 8 This is a schematic diagram of the cooling channel structure in the protective sleeve of the present invention; Figure 9 Cross-sectional view of the outer middle pressure block supporting the configuration; Figure 10 This is a schematic diagram of the overall assembly of the support configuration of the present invention; Figure 11 for Figure 2 Enlarged schematic diagram of the structure at the center circle; The components include: shell-1, protective sleeve-2, pressure block-3, test model-4, bolt connection assembly-5, coolant inlet pipe-6, coolant outlet pipe-7, transmission pipe-8, axial sealing ring I-9, axial sealing ring II-10, radial sealing ring-11, axial sealing ring III-12, connecting flange-101, base-102, cylinder-103, bolt connection through hole I-104, sealing groove-105, locating pin hole-106, threaded hole-107, axial sealing groove I-108, inner hole-109, flange I-201, protective boss-202, and shaft. Towards sealing groove II-203, bolt connection through hole II-204, coolant inlet-205, coolant outlet-206, pressure ring I-207, radial sealing groove-208, through channel I-209, cooling flow channel-210, pressure ring II-211, cooling channel inlet-212, semi-circular manifold-213, cooling tank-214, circular manifold-215, cooling channel outlet-216, flange II-301, pipe connection hole-302, bolt connection through hole III-303, pressure ring III-304, extension boss-305, through channel II-306. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0020] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0021] It should be noted that in the description of this invention, the orientations or positional relationships indicated by terms are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention. In addition, the terms "I" and "II" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0023] A support configuration for a central combustion test model is proposed to address the problem of effective support under complex high-temperature environments, such as... Figure 5-11 As shown, it includes: In practical applications, the housing 1, used to connect the test platform and fix the test model 4, not only connects to the test platform to form a continuous thermal testing environment, but also supports the protective sleeve 2 and the pressure block 3. The housing 1 consists of connecting flanges 101, bases 102, and a cylinder 103. The connecting flanges 101 are distributed on both sides of the cylinder 103. The connecting flanges 101 include bolt connection through holes I 104 for connecting to the test platform, sealing grooves 105 for sealing, and positioning pin holes 106 for positioning. The base 102 is located between the two connecting flanges 101, as close as possible to the middle of the cylinder 103. The bases 102 are evenly distributed along the circumference, and the number is not limited, but can be appropriately increased according to the size of the cylinder 103. The base 102 includes threaded holes 107 for use with the bolt assembly 5, axial sealing grooves I 108 for end face sealing, and inner holes 109 for connecting the protective sleeve 2. The cylinder 103 provides support and protection. The protective sleeve 2, used for thermal protection of the connection parts, primarily provides thermal protection for the connection between the radial sealing ring 11, the pressure block 3, and the test model 4 in practical applications. The protective sleeve 2 mainly includes: flange I 201, protective boss 202, through channel I 209, and cooling channel 210. Flange I 201 includes axial sealing groove II 203, bolt connection through hole II 204, coolant inlet 205, cooling channel outlet 206, and pressure ring I 207. Protective boss 202 mainly includes radial sealing groove 208 and pressure ring II 211. Through channel I 209 and cooling channel 210 are both enclosed by flange I 201 and protective boss 202. Through channel I 209 connects the extended boss 305 of pressure block 3 and the test model 4. Cooling channel 210 is used for the protective sleeve 2 and its internal components. It should be noted that the cooling channel 210 is the core component of the protective sleeve 2, enabling it to provide thermal protection. It mainly includes: a cooling channel inlet 212, a semi-circular manifold I 213, a cooling tank I 214, a semi-circular manifold II, a cooling tank II, a circular manifold 215, and a cooling channel outlet 216. In practical applications, the complete protective cooling path of this support configuration is as follows: coolant enters the cooling channel inlet 212 through the coolant inlet pipe 6, and is then distributed to several cooling tanks 214 on the walls through the semi-circular manifold 213 at the inlet end. The circular manifold 215 at the bottom transfers the coolant from the cooling tank 214 at the inlet end to the cooling tank 214 at the outlet end, and then converges through the semi-circular manifold 213 at the outlet end to the cooling channel outlet 216, thus being discharged through the coolant outlet pipe 7. The pressure block 3 is used to fix the test model 4 and the protective sleeve 2. In practical applications, the function of the pressure block 3 is to cooperate with the bolt connection assembly 5 to fix the protective sleeve 2 to the base 102, and at the same time to input the test liquid into the test model 4. The pressure block 3 consists of a flange II 301, an extension boss 305 and a test liquid channel 306. The flange II 301 includes a bolt connection through hole III 303, a pipe connection hole 302 and a pressure ring III 304. The test liquid channel 306 passes through the flange II 301 and the extension boss 305 and connects with the channel of the test model 4. Bolted connection assembly 5 for fixing housing 1, protective sleeve 2, pressure block 3 and test model 4; The transfer pipe 8 used to transfer the test liquid in the test model 4, in actual application, the complete test liquid path in the support configuration is: the test liquid enters the test liquid channel 306 of the pressure block 3 through the transfer pipe 8, and then flows into the test model 4 after converging. The sealing mechanism used to prevent fluid crossflow and leakage mainly employs axial sealing and radial end face sealing to achieve the sealing effect in application. Therefore, the sealing mechanism includes: axial sealing ring I9, axial sealing ring II10, axial sealing ring III12, and radial sealing ring 11. Among them, pressure ring I207 compresses axial sealing ring II10 in axial sealing groove I108 to achieve sealing between base 102 and protective sleeve 2; pressure ring II211 compresses axial sealing ring III12 in sealing groove of test model 4 to achieve sealing between protective sleeve 2 and test model 4; pressure ring III304 compresses axial sealing ring I9 in axial sealing groove 203 to achieve gas sealing between protective sleeve 2 and pressure block 3; the cylindrical surfaces of the mounting support rod of test model 4 and extension boss 305 of pressure block 3 compress radial sealing ring 11 in radial sealing groove 208 to achieve sealing of test fluid during flow in this support configuration.

[0024] A design method for the support configuration of a center combustion test model, such as Figures 1-11 Its design content includes: Since the connecting flange 101 is directly connected to the test platform, the dimensions and positions of structures such as the bolt connection through hole I 104, the sealing groove 105 for sealing, and the positioning pin hole 106 for positioning should match the flange of the test platform.

[0025] The proposed test model has a length of L1 and a diameter of D1, the dimensions of which are derived from specific test requirements; to ensure the flow of air in the test, the inner diameter D2 of the cylinder 103 is determined by the formula... Where D1 is the diameter of the experimental model, m The number of bases is determined, and once the number of bases is determined, the number of protective bosses 202 is also determined accordingly. D13 is the outer diameter of the protective bosses 202; the length of the cylinder 103 is... Where ρ2 is the density of the test airflow.U To test the airflow velocity, D2 is the inner diameter of cylinder 103. μ To test the viscosity of the airflow.

[0026] Based on the required test fluid flow rate inside the central combustion test model q The inner diameter of the external pipe of the test liquid is obtained. ,in, v The test solution was at its normal flow rate. q This is the test liquid flow rate. The inner diameter D4 of the test liquid channel 306 is equal to the inner diameter D3 of the external test liquid pipe; the diameter of the extended boss 305 is D5, which can be determined using the formula... We obtain, where P is the pressure of the test liquid. The required stress of the material selected for extending boss 305 is given by Y, which is the temperature correction factor of the material at the test temperature; the inner diameter D6 of the through channel I209 is equal to the outer diameter D5 of the extended boss 305.

[0027] Because the test model is located in a high-temperature region, the axial sealing rings I9, II10, and III12, which are not protected by cooling, are made of high-temperature resistant materials such as graphite and graphite packing. The radial sealing ring 11, protected by the protective sleeve 2, can be a conventional O-ring. (The formula is used to...) The diameter of the radial sealing groove 208 is D7, where d is the cross-sectional diameter of the O-ring in its free state.

[0028] Based on the total temperature and total pressure of the test airflow, the heat load Q is obtained by integrating over the heated surface of the protective boss 202. The required inner diameter of the coolant inlet pipe 6 is... ,in, ρ 1 represents the density of the coolant. C P The specific heat capacity of the coolant. V P This is the normal flow rate of the coolant. The allowable temperature rise of the coolant; the inner diameter D9 of the cooling channel inlet 212 and the inner diameter D10 of the cooling channel outlet 216 are both equal to D8; the height H1 of each semicircular manifold 213 is 1.2D9, and the width T1 is equal to the diameter D11 of the cooling tank I 214; the diameter of the cooling tank I 214... Cooling tank II has the same parameters as cooling tank I and is spatially distributed relative to each other to form a cylindrical structure. The total number of cooling tanks is... n is rounded down; the diameter of the distribution circle after the cooling tank is enclosed. The outer diameter of the protective boss 202 is D13 = 2D12 - D7. The bottom circular manifold 215 has a height H2 = 2D11 and a width T2 = πD8. 2 / 4H2.

[0029] In addition, the number of bases 102 must simultaneously meet the following requirements. And take the largest integer value, where G is the total mass of experimental model 4. The required stress of the material selected to protect the boss 202 is S, where S is the safety factor.

[0030] The assembly and fitting of the base 102 with the protective sleeve 2 and the protective sleeve 2 with the pressure block are machined according to the small clearance of the inner hole, which can ensure that the assembly is reasonable and simple, and avoid the pressure on the sealing ring caused by excessive wall clearance.

[0031] It should be noted that the pressure block, base, and protective sleeve are all interconnected and equal in number. Therefore, in the overall design described above, the dimensions of the protective boss in the protective sleeve are used as the calculation benchmark to ensure the matching degree of the three components after design.

[0032] Furthermore, the overall installation steps of the support configuration in this invention are as follows: a. Place the test model 4 inside the shell 1; b. The protective boss 202 of the protective sleeve 2 is inserted into the inner hole 109 of each base 102, so that while the pressure ring I 207 compresses the axial sealing ring II 10 in the axial sealing groove I 108, the pressure ring II 211 compresses the axial sealing ring III 12 in the sealing groove of the test model 4. Furthermore, the mounting support rod of the test model 4 can effectively pass through the radial sealing ring 11 in the radial sealing groove 208. c. Insert the extended boss 305 of the pressure block 3 into the through channel I 209 and effectively pass through the radial sealing ring 11 in the radial sealing groove 208, while the pressure ring III 304 compresses the axial sealing ring I 9 in the axial sealing groove 203. d. Align the threaded holes 107, bolt connection through holes II 204 and III 303 at each support position, and fasten the housing 1, protective sleeve 2, pressure block 3 and test model 4 together through the bolt connection assembly 5; e. Connect the coolant inlet pipe 6, coolant outlet pipe 7 and transmission pipe 8 through external pipelines, and then introduce coolant and test fluid; f. Finally, the support configuration is connected to the test platform to conduct a center combustion test.

[0033] Example: A support configuration for a central combustion test model includes: a shell for connecting a test platform and fixing the test model; a protective sleeve for thermal protection of the connection points; a pressure block for fixing the test model and the protective sleeve; a bolt connection assembly for fixing the shell, the protective sleeve, the pressure block, and the test model; a coolant inlet pipe for inputting coolant into the protective sleeve; a coolant outlet pipe for outputting coolant from the protective sleeve; a transmission pipe for transmitting test fluid to the test model; and axial sealing rings I, II, III, and a radial sealing ring for preventing fluid cross-flow and leakage.

[0034] First, the dimensions and positions of structures such as bolt connection through holes, sealing grooves, and locating pin holes on the connecting flange were determined using the test platform. The proposed airflow channel diameter for the test platform was 175mm, and the airflow channel diameter for the cylinder was also 175mm; the length of the test model was 110mm, and since there was sufficient space on the test platform, the cylinder length was chosen to be 250mm.

[0035] Secondly, based on the experimental requirements, the flow diameter of the test fluid was determined to be 7mm, therefore the diameter of the test fluid channel was 7mm, and the diameter of the extended boss was 12mm; the diameter of the through channel was also 12mm. The dimensions of each sealing groove, sealing boss, and sealing ring were designed according to national standards. The outer diameter of the radial sealing groove was 16mm. Then, based on the heat load, the inner diameter of the coolant inlet pipe was determined to be 4mm. Combining this with the previous structural parameters, the following were derived: cooling channel inlet diameter 4mm, cooling channel outlet diameter 4mm, semi-circular manifold height 4.5mm, width 1.2mm; cooling tank diameter 1.2mm, with 16 inlets and 16 outlets; cooling tank distribution circle diameter 21.5mm, protective boss outer diameter 26mm; bottom manifold height 2mm, width 4mm; the final results were verified through theoretical and simulation analysis.

[0036] After the production of each component model is completed, the test model is placed inside the housing. Then, the protective boss of the protective sleeve is inserted into the inner hole of each base, and the extended boss of the pressure block is placed into the through channel I. Subsequently, the threaded holes, bolt connection through holes II and III at each support position are aligned, and the housing, protective sleeve, pressure block, and test model are fixed together using bolt connection components. It is confirmed that all sealing rings are installed in the sealing grooves and are under appropriate pressure. Then, coolant inlet pipe, coolant outlet pipe, and transfer pipe are connected through external pipelines to introduce coolant and test fluid. Finally, the support configuration is connected to the test platform for a center combustion test.

[0037] The above solution is merely an illustration of a preferred example and is not limited thereto. When implementing this invention, appropriate substitutions and / or modifications can be made according to the user's needs.

[0038] The number of devices and processing scale described herein are for the purpose of simplifying the description of the invention. Applications, modifications, and variations of the invention will be readily apparent to those skilled in the art.

[0039] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Other modifications can be readily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and examples shown and described herein.

Claims

1. A method for designing the support configuration of a central combustion test model, characterized in that, include: S1. Design a cylindrical body with connecting flanges that can fully surround the test model, wherein the cylindrical body is provided with multiple bases that cooperate with the test model in the circumferential direction; S2. Design of support and protective sleeves that match each base; S3. Calculate the diameter D7 of the radial sealing groove at various points in the support configuration; S4. Design the parameters of the cooling channel in the support protective sleeve. The cooling channel includes the following according to the flow direction of the coolant: cooling channel inlet, semi-circular manifold I, cooling tank I, circular manifold, cooling tank II, semi-circular manifold II, and cooling channel outlet. S5. Based on the parameters of the cooling channel, determine the number of bases m and the cylinder parameters, and design pressure blocks to fix each support protective sleeve on the corresponding base. Based on the required test liquid flow rate inside the central combustion test model, determine the flow pipe diameter of the test liquid in each pressure block. In S4, the design method for each parameter of the cooling channel is as follows: S40. The inner diameter D8 of the cooling channel inlet is converted using the following formula, and the diameter D9 of the cooling channel outlet is the same as D8: ； In the above formula, ρ 1 represents the density of the coolant. C P This refers to the specific heat capacity of the coolant. V P This is the normal flow rate of the coolant. This is the allowable temperature rise of the coolant. Q This is the heat load obtained by integrating the heated surfaces on the support sleeve; S41. Obtain the total number n of cooling grooves in a single support protective sleeve, the diameter D11 of a single cooling groove, and the diameter D12 of the distribution circle enclosed by cooling groove I and cooling groove II using the following formulas: ； ； ； S42. Let the height of each semicircular manifold be H1, and H1 = 1.2D9, and the width T1 of each semicircular manifold be equal to the diameter D11 of a single cooling tank. S43. Obtain the height H2 and width T2 of the circular manifold using the following formulas: H2 = 2 × D11; T2=π×D8 2 / 4×H2.

2. The support configuration design method for the center combustion test model as described in claim 1, characterized in that, In S5, the pressure block is provided with a through channel II for constructing the test liquid flow channel; The diameter of the flow pipe for the test liquid is obtained by spatially combining the through channel I of the penetrating block and the base, and the external transmission pipe that cooperates with the through channel I, and the through channel I is spatially connected to the central combustion point of the test model; The inner diameter D3 of the external transmission pipe is the same as the diameter D4 of the through channel II, and D3 is obtained by the following formula: ； In the above formula, v The test solution was at its normal flow rate. q The flow rate of the test liquid required for combustion at the center of the test model.

3. The support configuration design method for the center combustion test model as described in claim 2, characterized in that, In S5, the diameter D5 of the extended boss on the pressure block that mates with the through channel I is characterized by the following formula: ； In the above formula, P is the pressure of the test liquid. Y represents the required stress for the selected material, and Y is the temperature correction factor for the material at the test temperature.

4. The support configuration design method for the center combustion test model as described in claim 1, characterized in that, In S5, let the length of the test model be L1 and the diameter be D1. Then, the inner diameter D2 of the cylinder is characterized by the following formula: ； In the above formula, m D13 is the number of bases, and D13 is the outer diameter of the protective boss in the protective sleeve, and D13 = 2D12 - D7; The length L2 of the cylinder is represented by the following formula: ； In the above formula, ρ 2 represents the airflow density in the experiment. U The airflow velocity for the experiment, μ The viscosity of the gas flow in the experiment is denoted as .

5. The support configuration design method for the center combustion test model as described in claim 4, characterized in that, The number of bases m The following formula must be satisfied: In the above formula, G is the total mass of the experimental model. S represents the required stress for the selected material, and S is the safety factor.

6. A support configuration for a center-burning test model, wherein the support configuration design method for a center-burning test model as described in any one of claims 1-5 is characterized in that, include: The housing includes: a cylinder for fixing the test model, flanges disposed on both sides of the cylinder for connecting the test platform, and multiple bases disposed circumferentially on the cylinder; A protective sleeve extending into each base for thermal protection of the connection parts, the protective sleeve including flange I and a protective boss provided on flange I; The pressure block extends into the corresponding protective sleeve to construct the test liquid flow channel. The pressure block includes a flange II and an extended boss disposed on the flange II. The transfer tube introduces the test solution into the test solution flow channel; Sealing mechanisms are provided between the base and the protective sleeve, and between the protective sleeve and the pressure block; The protective sleeve has a cooling channel built inside, and the cooling channel is connected to the external coolant circulation module through the cooling channel inlet and the cooling channel outlet.

7. The support configuration of the center combustion test model as described in claim 6, characterized in that, The cooling channel includes: Cooling channel inlet I, which is matched with the cooling channel inlet; Cooling tank I is arranged vertically in space to vertically transport the coolant in the semi-circular manifold I; A circular confluence cavity that is spatially connected to cooling tank I; Cooling tank II of semi-circular manifold II is arranged vertically to the circular manifold in space to vertically transport the coolant in the circular manifold. The semi-circular manifold II is spatially connected to the cooling channel outlet; The cooling channel inlet, semi-circular manifold I, semi-circular manifold II, and cooling channel outlet are all arranged on flange I, while the circular manifold, cooling tank I, and cooling tank II are arranged on the protective boss.

8. The support configuration of the center combustion test model as described in claim 6, characterized in that, The protective sleeve is provided with a through channel I for the pressure block to extend into; The upper end face of the flange I is provided with an axial sealing groove II for installing the sealing mechanism, and the lower end face of the flange I is provided with a pressure ring I that limits the sealing mechanism to the base. A pressure ring II is provided on the lower end face of the protective boss to limit the sealing mechanism; At least one radial sealing groove is provided on the inner wall of the through channel I.

9. The support configuration of the center combustion test model as described in claim 6, characterized in that, The flange II is provided with a pipe connection hole for installing the transmission pipe at the position where it mates with the through channel II; The lower surface of flange II is provided with a pressure ring III that confines the sealing mechanism to flange I.

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