Hydrogen fuel combustion chamber staged combustion design method, device and equipment and storage medium

Abstract

The invention provides a staged combustion design method, device and equipment for a hydrogen fuel combustion chamber and a storage medium, and the staged combustion design method for the hydrogen fuel combustion chamber comprises the following steps: designing a first structure parameter of a pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber based on an assumed design parameter, designing a second structure parameter of a main combustion stage combustion chamber of the hydrogen fuel combustion chamber; based on the first structure parameters and the second structure parameters, third structure parameters of inner and outer ring cavities of the hydrogen fuel combustion chamber are designed; based on the first structure parameter, the second structure parameter and the third structure parameter, whether the geometric dimension of the hydrogen fuel combustion chamber exceeds a geometric dimension constraint condition or not is detected; if not, a two-dimensional flow path is drawn, and the combustion control rule of the hydrogen fuel combustion chamber is determined based on the control rule of the engine. The staged design of the pre-combustion stage combustion chamber, the main combustion stage combustion chamber and the inner and outer ring cavities is integrated, so that the hydrogen fuel combustion chamber can achieve staged combustion, and combustion is more sufficient.

Description

Technical Field

[0001] The present invention relates to the field of aviation technology, and in particular to a hydrogen fuel combustion chamber staged combustion design method, device, equipment and storage medium. Background Art

[0002] Under the "dual carbon" goal, hydrogen has become the fuel with the greatest application potential in the field of aviation engines and ground combustion engines due to its zero carbon emissions and high fuel calorific value. The advantages and potential of hydrogen-powered flight are gradually emerging, becoming the key to the low-carbon development of the aviation industry.

[0003] Combustion chambers that use hydrogen as fuel will generate a large amount of nitrogen oxides due to the high flame temperature, which is not conducive to reducing pollutant emissions. At present, existing research widely transforms large-scale flames into a large number of small-scale flames, which enhances the local mixing intensity of air and hydrogen and improves the mixing uniformity.

[0004] At present, most of the existing hydrogen combustion chambers mix fuel and air together and burn them throughout the combustion chamber. Therefore, the hydrogen fuel combustion chamber is simple in design and is generally easy to manufacture and maintain. However, the existing combustion chambers are insufficient in terms of combustion efficiency, emission control and fuel adaptability. And when the pressure and temperature distribution in the combustion chamber is uneven, it will lead to incomplete flame penetration and combustion, thereby reducing propulsion efficiency and increasing emissions. At the same time, the air flow speed in the combustion chamber is too fast and the residence time is too short, which makes it difficult to fully burn, resulting in reduced propulsion efficiency and increased emissions. Summary of the invention

[0005] The present invention provides a hydrogen fuel combustion chamber staged combustion design method, device, equipment and storage medium, which are used to solve the defect of insufficient combustion in the combustion chamber in the prior art.

[0006] The present invention provides a hydrogen fuel combustion chamber staged combustion design method, comprising: Based on the assumed design parameters, first structural parameters of a pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber are designed, and second structural parameters of a main combustion stage combustion chamber of the hydrogen fuel combustion chamber are designed; Based on the first structural parameter and the second structural parameter, designing the third structural parameter of the inner and outer annular cavities of the hydrogen fuel combustion chamber; Based on the first structural parameter, the second structural parameter and the third structural parameter, detecting whether the geometric size of the hydrogen fuel combustion chamber exceeds a geometric size constraint condition; If not exceeded, a two-dimensional flow path is drawn based on the first structural parameter, the second structural parameter and the third structural parameter, and a combustion control law of the hydrogen fuel combustion chamber is determined based on a control law of the engine.

[0007] According to a hydrogen fuel combustion chamber staged combustion design method provided by the present invention, the first structural parameter of the pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber is designed based on the assumed design parameters, including: Calculating a first head flow rate of the pre-combustion stage combustion chamber based on an assumed total combustion chamber equivalence ratio and a combustion chamber head equivalence ratio; Calculating a first head area of ​​the pre-combustion stage combustion chamber based on the first head flow rate and an assumed pre-combustion stage head reference speed, and calculating a first head height of the pre-combustion stage combustion chamber according to the first head area; Based on the assumed first ratio, calculating the first flame tube length of the pre-combustion stage combustion chamber; wherein the first ratio is the ratio of the first flame tube length of the pre-combustion stage combustion chamber to the first head height; Calculate the first cold state residence time of the pre-combustion stage combustion chamber according to the first head height and the first flame tube length; Calculating a first characteristic parameter according to the first head area and the first head height, and calculating a first combustion efficiency of the pre-combustion stage combustion chamber according to the first characteristic parameter; detecting whether the first combustion efficiency satisfies a first preset efficiency condition; If not, skipping to the step of calculating the first head area of ​​the pre-combustion stage combustion chamber based on the first head flow rate and the assumed pre-combustion stage head reference speed until the first combustion efficiency meets the first preset efficiency condition; Calculating a first outlet temperature distribution coefficient of the pre-combustion stage combustion chamber according to the first head height and the first flame tube length; Detecting whether the first outlet temperature distribution coefficient meets a first preset temperature distribution coefficient requirement; If not satisfied, the jump execution step is to calculate the first head area of ​​the pre-combustion stage combustion chamber based on the first head flow and the assumed pre-combustion stage head reference speed until the first outlet temperature distribution coefficient meets the first preset temperature distribution coefficient requirement.

[0008] According to a hydrogen fuel combustion chamber staged combustion design method provided by the present invention, the second structural parameter of the main combustion chamber of the hydrogen fuel combustion chamber is designed, including: Calculating a second head flow rate of the main combustion stage combustion chamber based on an assumed total combustion chamber equivalence ratio and a combustion chamber head equivalence ratio; Calculating a second head area of ​​the main combustion stage combustion chamber based on the second head flow rate and an assumed main combustion stage head reference speed, and calculating a second head height of the main combustion stage combustion chamber according to the second head area; Based on the assumed second ratio, the second flame tube length of the main combustion stage combustion chamber is calculated; wherein the second ratio is the ratio of the second flame tube length of the main combustion stage combustion chamber to the second head height; Calculate the second cold state residence time of the main combustion stage combustion chamber according to the second head height and the second flame tube length; Calculating a second characteristic parameter according to the main second head area and the second head height, and calculating a second combustion efficiency of the main combustion stage combustion chamber according to the second characteristic parameter; detecting whether the second combustion efficiency satisfies a second preset efficiency condition; If not, jump to the execution step of calculating the second head area of ​​the main combustion stage combustion chamber based on the second head flow rate and the assumed main combustion stage head reference speed until the second combustion efficiency meets the second preset efficiency condition; Calculating a second outlet temperature distribution coefficient of the main combustion stage combustion chamber according to the second head height and the second flame tube length; Detecting whether the second outlet temperature distribution coefficient meets a second preset temperature distribution coefficient requirement; If not satisfied, the jump execution step is to calculate the second head area of ​​the main combustion stage combustion chamber based on the second head flow and the assumed main combustion stage head reference speed until the second outlet temperature distribution coefficient meets the second preset temperature distribution coefficient requirement.

[0009] According to a hydrogen fuel combustion chamber staged combustion design method provided by the present invention, after detecting whether the geometric dimensions of the hydrogen fuel combustion chamber exceed the geometric dimension constraint condition, the method further includes: If exceeded, the jump execution step is to calculate the second head area of ​​the main combustion stage combustion chamber based on the second head flow and the assumed main combustion stage head reference speed until the geometric dimensions of the hydrogen fuel combustion chamber do not exceed the geometric dimension constraints.

[0010] According to a hydrogen fuel combustion chamber staged combustion design method provided by the present invention, the third structural parameter of the inner and outer annular cavities of the hydrogen fuel combustion chamber is designed based on the first structural parameter and the second structural parameter, including: Calculating the annular cavity flows of the inner and outer annular cavities of the hydrogen fuel combustion chamber based on the first head flow in the first structural parameter and the second head flow in the second structural parameter; Calculating the annulus area based on the annulus flow rate and an assumed annulus air flow rate; Calculating a reference cross-sectional height of the hydrogen fuel combustion chamber according to the annular cavity area; The annular cavity height is calculated according to the reference cross-section height, the first head height in the first structural parameter, and the second head height in the second structural parameter.

[0011] According to a hydrogen fuel combustion chamber staged combustion design method provided by the present invention, the drawing of a two-dimensional flow path based on the first structural parameter, the second structural parameter and the third structural parameter comprises: The two-dimensional flow path is drawn according to the first head height and the first flame tube length in the first structural parameter, the second head height and the second flame tube length in the second structural parameter, and the annular cavity height in the third structural parameter.

[0012] According to a hydrogen fuel combustion chamber staged combustion design method provided by the present invention, the combustion control law of the hydrogen fuel combustion chamber is determined based on the control law of the engine, comprising: Determining operating condition information based on a control law of the engine; The combustion control law of the pre-combustion stage combustion chamber and the main combustion stage combustion chamber is determined according to the operating condition information; wherein, when the pre-combustion stage combustion chamber or the main combustion stage combustion chamber is connected based on the combustion control law, the total equivalence ratio of the combustion chamber meets the preset equivalence ratio requirement.

[0013] The present invention also provides a hydrogen fuel combustion chamber staged combustion design device, comprising: A first design module is configured to design a first structural parameter of a pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber based on an assumed design parameter, and to design a second structural parameter of a main combustion stage combustion chamber of the hydrogen fuel combustion chamber; A second design module is configured to design third structural parameters of the inner and outer annular cavities of the hydrogen fuel combustion chamber based on the first structural parameters and the second structural parameters; a detection module configured to detect whether a geometric dimension of the hydrogen fuel combustion chamber exceeds a geometric dimension constraint condition based on the first structural parameter, the second structural parameter and the third structural parameter; The drawing module is configured to draw a two-dimensional flow path based on the first structural parameter, the second structural parameter and the third structural parameter if it is not exceeded, and determine the combustion control law of the hydrogen fuel combustion chamber based on the control law of the engine.

[0014] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for designing staged combustion of a hydrogen fuel combustion chamber as described above is implemented.

[0015] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method for designing staged combustion of a hydrogen fuel combustion chamber as described in any one of the above is implemented.

[0016] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method for designing staged combustion of a hydrogen fuel combustion chamber as described above is implemented.

[0017] The hydrogen fuel combustion chamber staged combustion design method, device, equipment and storage medium provided by the present invention integrate the staged design of the pre-combustion stage combustion chamber, the main combustion stage combustion chamber and the inner and outer annular cavities through the design of the first structural parameter, the second structural parameter and the third structural parameter. Then the design of the hydrogen fuel combustion chamber is completed, the hydrogen fuel combustion chamber can realize staged combustion, and reasonable combustion adjustment can be performed according to the mixing mode of air and fuel in different parts, so as to achieve the purpose of optimizing combustion, improving thermal efficiency and reducing emissions. In addition, the staged design of the pre-combustion stage combustion chamber, the main combustion stage combustion chamber and the inner and outer annular cavities can also effectively control the size, weight and cost of the combustion chamber, and improve the economy and reliability of the entire combustion chamber. At the same time, during the design, two-dimensional flow path drawing and combustion control law determination are also performed to provide guidance for the hydrogen combustion staged design, to reasonably adjust the combustion, optimize the combustion, improve the combustion efficiency under the full working condition of the engine, and greatly reduce the emission of pollutants. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic flow chart of the hydrogen fuel combustion chamber staged combustion design method provided by the present invention.

[0020] Figure 2 It is a structural schematic diagram of a hydrogen fuel combustion chamber staged combustion design device provided by the present invention.

[0021] Figure 3 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Combine the following Figure 1-Figure 3 The invention describes a hydrogen fuel combustion chamber staged combustion design method, device, equipment and storage medium.

[0024] Figure 1 FIG. 1 is a flow chart showing a method for designing a hydrogen fuel combustion chamber staged combustion according to an exemplary embodiment. Figure 1 As shown, in an exemplary embodiment, the method for designing staged combustion of a hydrogen fuel combustion chamber includes steps 110 to 140, which are described in detail as follows.

[0025] Step 110, based on the assumed design parameters, design the first structural parameters of the pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber, and design the second structural parameters of the main combustion stage combustion chamber of the hydrogen fuel combustion chamber.

[0026] In an embodiment of the present invention, the hydrogen fuel combustion chamber includes a pre-combustion stage combustion chamber and a main combustion stage combustion chamber. In the radial direction of the hydrogen fuel combustion chamber, the outer annular cavity is the pre-combustion stage combustion chamber, and the inner annular cavity is the main combustion stage combustion chamber. The hydrogen fuel combustion chamber makes full use of hydrogen by staged combustion. The pre-combustion stage combustion chamber works at low operating conditions, and the fuel and air are evenly mixed to form a combustible gas mixture. As the engine speed increases, the main combustion stage combustion chamber is connected, so that the combustion chamber always operates at a lower total equivalence ratio, thereby reducing the generation of emissions. Staged combustion allows the fuel to stay longer and the fuel to burn more fully, that is, the pre-combustion stage combustion chamber and the main combustion stage combustion chamber can burn efficiently under various operating conditions, improve the combustion chamber ignition and flameout boundaries, and broaden the engine's stable operating range.

[0027] Through staged design, reasonable combustion adjustment can be made according to the mixing mode of air and fuel in different parts, so as to achieve the purpose of optimizing combustion, improving thermal efficiency and reducing emissions. In addition, staged design can also effectively control the size, weight and cost of the combustion chamber, and improve the economy and reliability of the whole system. Therefore, the staged design of the combustion chamber is an indispensable part of the design of modern gas turbines and aircraft engines.

[0028] In the embodiment of the present invention, when designing the hydrogen fuel combustion chamber, the specific size of the hydrogen fuel combustion chamber is temporarily unknown, so the relevant design parameters are first assumed, such as the total equivalence ratio of the combustion chamber, the reference speed of the pre-combustion stage head, the reference speed of the main combustion stage head, etc. According to the assumed design parameters, the first structural parameters of the pre-combustion stage combustion chamber and the second structural parameters of the main combustion stage combustion chamber are designed. The first structural parameters include the first head flow rate, the first head area, the first head height, the first flame tube length and other parameters related to the pre-combustion stage combustion chamber. Similarly, the second structural parameters include the second head flow rate, the second head area, the second head height, the second flame tube length and other parameters related to the main combustion stage combustion chamber.

[0029] Step 120: Design third structural parameters of the inner and outer annular cavities of the hydrogen fuel combustion chamber based on the first structural parameters and the second structural parameters.

[0030] In an embodiment of the present invention, the third structural parameters of the inner and outer annular cavities of the hydrogen fuel combustion chamber are designed based on the obtained first structural parameters and second structural parameters. The third structural parameters include annular cavity area, reference section height, annular cavity height and other related parameters.

[0031] Step 130: Based on the first structural parameter, the second structural parameter and the third structural parameter, detect whether the geometric size of the hydrogen fuel combustion chamber exceeds the geometric size constraint condition.

[0032] In an embodiment of the present invention, after obtaining the first structural parameter, the second structural parameter and the third structural parameter, it is necessary to calculate whether the geometric dimensions of the hydrogen fuel combustion chamber obtained exceed the geometric dimension constraints. The geometric dimension constraints refer to the geometric space given by the engine for placing the hydrogen fuel combustion chamber, including the maximum length and the minimum inner diameter and the maximum outer diameter. When the geometric dimension constraints are not met, the first structural parameter, the second structural parameter and the third structural parameter need to be redesigned.

[0033] Step 140: If it is not exceeded, a two-dimensional flow path is drawn based on the first structural parameter, the second structural parameter and the third structural parameter, and a combustion control law of the hydrogen fuel combustion chamber is determined based on a control law of the engine.

[0034] In the embodiment of the present invention, if it is detected that the geometric size of the hydrogen fuel combustion chamber does not exceed the geometric size constraint condition, a two-dimensional flow path is drawn based on the first structural parameter, the second structural parameter and the third structural parameter, and the two-dimensional flow path represents the flow path of the airflow and the fuel mixture inside the combustion chamber. Then, the combustion control law of the hydrogen fuel combustion chamber is determined based on the control law of the engine, so that the pre-combustion stage combustion chamber and the main combustion stage combustion chamber can burn under appropriate circumstances.

[0035] In the embodiment of the present invention, the hierarchical design of the pre-combustion stage combustion chamber, the main combustion stage combustion chamber and the inner and outer annular cavities is integrated by designing the first structural parameter, the second structural parameter and the third structural parameter. Then the design of the hydrogen fuel combustion chamber is completed, and the hydrogen fuel combustion chamber can realize hierarchical combustion, and reasonable combustion adjustment can be performed according to the mixing mode of air and fuel in different parts, so as to achieve the purpose of optimizing combustion, improving thermal efficiency and reducing emissions. In addition, the hierarchical design of the pre-combustion stage combustion chamber, the main combustion stage combustion chamber and the inner and outer annular cavities can also effectively control the size, weight and cost of the combustion chamber, and improve the economy and reliability of the entire combustion chamber. At the same time, during the design, two-dimensional flow path drawing and combustion control law determination are also performed to provide guidance for the hierarchical design of hydrogen combustion, to reasonably adjust the combustion, optimize the combustion, improve the combustion efficiency under all working conditions of the engine, and significantly reduce pollutant emissions.

[0036] The hydrogen fuel combustion chamber designed in the embodiment of the present invention makes full use of hydrogen by means of staged combustion. The pre-combustion stage combustion chamber works at low operating conditions, and the fuel and air are evenly mixed to form a combustible gas mixture, which is crucial to the stability and efficiency of combustion. As the engine speed increases, the main combustion stage combustion chamber is connected, so that the combustion chamber always operates at a lower total equivalence ratio, thereby reducing the generation of emissions. Staged combustion allows the fuel to stay longer and burn more fully, that is, the pre-combustion stage combustion chamber and the main combustion stage combustion chamber can burn efficiently under various operating conditions, improve the combustion chamber ignition and flameout boundaries, and broaden the engine's stable operating range.

[0037] In an exemplary embodiment of the present invention, the design of the first structural parameters of the pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber based on the assumed design parameters includes the following steps, which are described in detail as follows.

[0038] The first head flow of the pre-combustion stage combustion chamber is calculated based on the assumed combustion chamber total equivalence ratio and the combustion chamber head equivalence ratio.

[0039] Based on the first head flow rate and an assumed pre-combustion stage head reference speed, a first head area of ​​the pre-combustion stage combustion chamber is calculated, and a first head height of the pre-combustion stage combustion chamber is calculated according to the first head area.

[0040] Based on an assumed first ratio, a first flame tube length of the pre-combustion stage combustion chamber is calculated; wherein the first ratio is a ratio of the first flame tube length of the pre-combustion stage combustion chamber to a first head height.

[0041] A first cold residence time of the pre-combustion stage combustion chamber is calculated according to the first head height and the first flame tube length.

[0042] A first characteristic parameter is calculated according to the first head area and the first head height, and a first combustion efficiency of the pre-combustion stage combustion chamber is calculated according to the first characteristic parameter.

[0043] It is detected whether the first combustion efficiency meets a first preset efficiency condition.

[0044] If not, the jump execution step is to calculate the first head area of ​​the pre-combustion stage combustion chamber based on the first head flow and the assumed pre-combustion stage head reference speed until the first combustion efficiency meets the first preset efficiency condition.

[0045] The first outlet temperature distribution coefficient of the pre-combustion stage combustion chamber is calculated according to the first head height and the first flame tube length.

[0046] Detect whether the first outlet temperature distribution coefficient meets a first preset temperature distribution coefficient requirement.

[0047] If not satisfied, the jump execution step is to calculate the first head area of ​​the pre-combustion stage combustion chamber based on the first head flow and the assumed pre-combustion stage head reference speed until the first outlet temperature distribution coefficient meets the first preset temperature distribution coefficient requirement.

[0048] In the embodiment of the present invention, in order to determine the number of micro-mixing units in the main combustion chamber and the pre-combustion chamber of the hydrogen fuel combustion chamber, it is first assumed that the total equivalent ratio of a combustion chamber is , and then calculate the total head flow distribution according to the following formula .

[0049] .

[0050] In the above formula, is the total equivalence ratio of the combustion chamber, which is the ratio of the total hydrogen flow rate to the total air flow rate in the hydrogen fuel combustion chamber. It is the combustion chamber head equivalence ratio. In order to reduce emissions, the combustion chamber head equivalence ratio is generally less than 0.5. A value between 0.4 and 0.5 can be selected as the combustion chamber head equivalence ratio.

[0051] The air flow ratio of the pre-combustion stage combustion chamber to the main combustion chamber is given according to experience or design criteria, and the air flow ratio of the pre-combustion stage combustion chamber to the main combustion chamber is equal to the hydrogen flow ratio of the pre-combustion stage combustion chamber to the main combustion chamber. According to the assumed air flow ratio of the pre-combustion stage combustion chamber to the main combustion chamber, the ratio of the flow of the pre-combustion stage combustion chamber to the total flow n can be calculated, and then the formula Calculate the pre-combustion stage head flow distribution ratio .

[0052] According to the pre-combustion stage head flow distribution ratio And the total flow rate W3 of the combustion chamber inlet can be obtained by the formula Calculate the first head flow of the pre-combustion chamber .

[0053] Assuming the pre-stage head reference speed The first head area of ​​the pre-combustion chamber can be calculated by the following formula: .

[0054] ; In the above formula, is the inlet air density.

[0055] Then, according to the first head area and the assumed radial distance of the pre-combustion stage head, the first head height can be calculated by the following formula .

[0056] ; In the above formula, It represents the radial distance of the pre-combustion stage head, which is the distance from the center of the pre-combustion stage combustion chamber head to the axis of the inner cylinder of the combustion chamber.

[0057] According to the assumed first ratio r, the first ratio r is the ratio of the first flame tube length to the first head height. Calculate the first flame tube length .

[0058] According to the length of the first flame tube With the first head area The volume of the pre-combustion stage flame tube can be calculated by the following formula: .

[0059] .

[0060] Then according to the formula Calculate the first cold state residence time .

[0061] After the first structural parameters are calculated based on the assumed design parameters, it is necessary to verify whether the obtained first structural parameters meet the design requirements.

[0062] Specifically, based on the first combustion efficiency and the first characteristic parameter Among them, the characteristic parameters are physical quantities related to the combustion chamber inlet temperature, combustion chamber inlet pressure, combustion chamber inlet air total flow rate, combustion chamber reference cross-sectional area, and combustion chamber reference cross-sectional diameter. Therefore, the first characteristic parameter It is calculated by the following formula.

[0063] ; Among them, P3 is the combustion chamber inlet pressure, and T3 is the combustion chamber inlet temperature.

[0064] According to the calculated first characteristic parameter , substitute the following first combustion efficiency The calculation formula is: .

[0065] Generally speaking, the engine's slow-speed combustion efficiency is required to be greater than 95%. Therefore, the embodiment of the present invention can set the first preset efficiency condition to 95%. When the calculated first combustion efficiency is less than or equal to 95%, the pre-combustion stage head reference speed is re-selected. , recalculate the first head area, the first head height, etc., and then recalculate the first characteristic parameter and the first combustion efficiency until the first combustion efficiency meets the first preset efficiency condition.

[0066] The first outlet temperature distribution coefficient of the pre-combustion stage combustion chamber is calculated by the following formula.

[0067] ; Among them, in the above formula, It indicates the flame tube pressure loss, that is, the ratio of the difference between the total pressure at the inlet and outlet of the combustion chamber to the total pressure at the inlet of the combustion chamber; Indicates the dynamic pressure head, .

[0068] A first preset temperature distribution coefficient requirement is preset, such as 0.25. If the calculated first outlet temperature distribution coefficient is less than the first preset temperature distribution coefficient requirement, it is determined to meet the requirement, otherwise the pre-combustion stage head reference speed V needs to be re-selected. d,p , recalculate the relevant information until the requirements are met.

[0069] In an exemplary embodiment of the present invention, the design of the second structural parameters of the main combustion stage combustion chamber of the hydrogen fuel combustion chamber includes the following steps, which are described in detail as follows.

[0070] The second head flow of the main combustion stage combustion chamber is calculated based on the assumed combustion chamber total equivalence ratio and combustion chamber head equivalence ratio.

[0071] Based on the second head flow rate and the assumed main combustion stage head reference speed, the second head area of ​​the main combustion stage combustion chamber is calculated, and the second head height of the main combustion stage combustion chamber is calculated according to the second head area.

[0072] Based on the assumed second ratio, the second flame tube length of the main combustion stage combustion chamber is calculated; wherein the second ratio is the ratio of the second flame tube length of the main combustion stage combustion chamber to the second head height.

[0073] The second cold state residence time of the main combustion stage combustion chamber is calculated according to the second head height and the second flame tube length.

[0074] A second characteristic parameter is calculated based on the main second head area and the second head height, and a second combustion efficiency of the main combustion stage combustion chamber is calculated based on the second characteristic parameter.

[0075] It is detected whether the second combustion efficiency meets a second preset efficiency condition.

[0076] If not satisfied, the jump execution step is to calculate the second head area of ​​the main combustion stage combustion chamber based on the second head flow and the assumed main combustion stage head reference speed until the second combustion efficiency meets the second preset efficiency condition.

[0077] The second outlet temperature distribution coefficient of the main combustion stage combustion chamber is calculated according to the second head height and the second flame tube length.

[0078] Detect whether the second outlet temperature distribution coefficient meets the second preset temperature distribution coefficient requirement.

[0079] If not satisfied, the jump execution step is to calculate the second head area of ​​the main combustion stage combustion chamber based on the second head flow and the assumed main combustion stage head reference speed until the second outlet temperature distribution coefficient meets the second preset temperature distribution coefficient requirement.

[0080] In the embodiment of the present invention, according to the ratio n of the flow rate of the pre-combustion stage combustion chamber to the total flow rate, according to the formula Calculate the main combustion stage head flow distribution ratio .

[0081] Distribution according to the main combustion stage head flow And the total flow rate W3 of the combustion chamber inlet can be obtained by the formula Calculate the second head flow of the main combustion chamber .

[0082] Assuming the main stage head reference speed , can be obtained by formula Calculate the second head area of ​​the pre-combustion chamber .

[0083] Then, according to the second head area The second head height can be calculated by the following formula: .

[0084] .

[0085] In the above formula, It represents the radial distance of the main combustion stage head, which is the distance from the center of the main combustion stage combustion chamber head to the axis of the combustion chamber inner cylinder.

[0086] According to the assumed second ratio x, the second ratio x is the ratio of the second flame tube length to the second head height. Calculate the second flame tube length .

[0087] According to the length of the second flame tube With the second head area The main combustion stage flame tube volume can be calculated by the following formula .

[0088] .

[0089] Then according to the formula Calculate the second cold state residence time .

[0090] After the above second structural parameters are calculated based on the assumed design parameters, it is necessary to verify whether the obtained second structural parameters meet the design requirements.

[0091] Specifically, based on the second combustion efficiency and the second characteristic parameter The second characteristic parameter It is calculated by the following formula.

[0092] .

[0093] According to the calculated first characteristic parameter , substitute into calculate the second combustion efficiency The calculation formula is: .

[0094] The second preset efficiency condition may be the same as or different from the first preset efficiency condition, and the present invention does not limit this. When the calculated second combustion efficiency is less than or equal to the second preset efficiency condition, it is determined that the requirement is not met and a new main combustion stage head reference speed is required. , recalculate the second head area, the second head height, etc., and then recalculate the second characteristic parameter and the second combustion efficiency until the second combustion efficiency meets the second preset efficiency condition.

[0095] The second outlet temperature distribution coefficient of the main combustion chamber is calculated by the following formula.

[0096] .

[0097] A second preset temperature distribution coefficient requirement is preset, and the second preset temperature distribution coefficient requirement may be the same as or different from the first preset temperature distribution coefficient requirement, and the present invention does not limit this. If the calculated second outlet temperature distribution coefficient is less than the second preset temperature distribution coefficient requirement, it is determined to meet the requirement, otherwise the main combustion stage head reference speed needs to be reselected. , recalculate the relevant information until the requirements are met.

[0098] In an exemplary embodiment of the present invention, after detecting whether the geometric dimensions of the hydrogen fuel combustion chamber exceed geometric dimension constraints, the method further includes the following steps, which are described in detail as follows.

[0099] If exceeded, the jump execution step is to calculate the second head area of ​​the main combustion stage combustion chamber based on the second head flow and the assumed main combustion stage head reference speed until the geometric dimensions of the hydrogen fuel combustion chamber do not exceed the geometric dimension constraints.

[0100] In an embodiment of the present invention, when the geometric dimensions of the hydrogen fuel combustion chamber exceed the geometric dimension constraints, it indicates that the designed hydrogen fuel combustion chamber cannot be placed in a given geometric space, and it is necessary to design the geometric dimensions of the hydrogen fuel combustion chamber and reselect the main combustion stage head reference speed. Correspondingly, the second head height, the second flame tube length, etc. are also recalculated.

[0101] In an exemplary embodiment of the present invention, the third structural parameters of the inner and outer annular cavities of the hydrogen fuel combustion chamber are designed based on the first structural parameters and the second structural parameters, including the following steps, which are described in detail as follows.

[0102] Based on the first head flow in the first structural parameter and the second head flow in the second structural parameter, the annular cavity flows of the inner and outer annular cavities of the hydrogen fuel combustion chamber are calculated.

[0103] Based on the annulus flow rate and the assumed annulus air velocity, the annulus area is calculated.

[0104] The reference cross-sectional height of the hydrogen fuel combustion chamber is calculated according to the annular cavity area.

[0105] The annular cavity height is calculated according to the reference cross-section height, the first head height in the first structural parameter, and the second head height in the second structural parameter.

[0106] In the embodiment of the present invention, according to the total flow rate W3 of the combustion chamber inlet and the flow rate of the first head and the second head flow , can be obtained by formula Calculate the annular cavity flow rate W p .

[0107] Assuming an annular air velocity , then according to the annular cavity flow W p and annular air velocity The annular cavity area A can be calculated p , through the formula Calculate the annular cavity area A p .

[0108] According to the inner and outer diameters of the hydrogen fuel combustion chamber outlet, calculate the reference cross-sectional median diameter of the hydrogen fuel combustion chamber. , reference section median diameter The calculation formula is as follows.

[0109] ; In the above formula, represents the inner diameter of the hydrogen fuel combustion chamber outlet, Indicates the outer diameter of the hydrogen fuel combustion chamber outlet.

[0110] According to the annular cavity area A p and the reference section median diameter , calculate the reference section height , the corresponding calculation formula is as follows.

[0111] .

[0112] According to the reference section height , Second head height and the first head height , calculate the ring cavity height H p , the corresponding calculation formula is as follows.

[0113] .

[0114] In an exemplary embodiment of the present invention, drawing a two-dimensional flow path based on the first structural parameter, the second structural parameter and the third structural parameter includes the following steps, which are described in detail as follows.

[0115] The two-dimensional flow path is drawn according to the first head height and the first flame tube length in the first structural parameter, the second head height and the second flame tube length in the second structural parameter, and the annular cavity height in the third structural parameter.

[0116] In an embodiment of the present invention, a two-dimensional flow path is drawn based on the first head height, the first flame tube length, the second head height, the second flame tube length and the annular cavity height. The two-dimensional flow path of the combustion chamber refers to the path of the airflow and fuel mixture flowing inside the combustion chamber. The two-dimensional flow path can help understand the flow characteristics in the combustion chamber, including velocity distribution, pressure distribution and the mixing process of fuel and air, which helps to improve combustion efficiency, reduce emissions and optimize the combustion chamber.

[0117] In an exemplary embodiment of the present invention, the combustion control law of the hydrogen fuel combustion chamber is determined based on the control law of the engine, including the following steps, which are described in detail as follows.

[0118] Based on the control law of the engine, operating condition information is determined.

[0119] The combustion control law of the pre-combustion stage combustion chamber and the main combustion stage combustion chamber is determined according to the operating condition information; wherein, when the pre-combustion stage combustion chamber or the main combustion stage combustion chamber is connected based on the combustion control law, the total equivalence ratio of the combustion chamber meets the preset equivalence ratio requirement.

[0120] In the embodiment of the present invention, the combustion control law is drawn, that is, in the case of small working conditions, the pre-combustion stage combustion chamber works, and in the case of large working conditions, the main combustion stage combustion chamber is connected, and works simultaneously with the pre-combustion stage burner, and matches the control law of the engine. At the appropriate working point of the engine, the main combustion stage combustion chamber is connected, such as generally connecting the main combustion stage combustion chamber at working conditions above the slow point and below the aircraft climbing point, so as to always keep the total head equivalent of the combustion chamber at a low value, such as 0.5, so as to reduce nitrogen oxide emissions.

[0121] The following is a description of the hydrogen fuel combustion chamber staged combustion design device provided by the present invention. The hydrogen fuel combustion chamber staged combustion design device described below and the hydrogen fuel combustion chamber staged combustion design method described above can be referred to each other. It should be noted that the device provided in the following embodiment and the method provided in the above embodiment belong to the same concept, and the specific manner in which each module and unit performs the operation has been described in detail in the method embodiment, which will not be repeated here.

[0122] In an exemplary embodiment of the present invention, see Figure 2 , Figure 2 A hydrogen fuel combustion chamber staged combustion design device is shown according to an exemplary embodiment, including the following modules.

[0123] A first design module 210 is configured to design first structural parameters of a pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber based on assumed design parameters, and to design second structural parameters of a main combustion stage combustion chamber of the hydrogen fuel combustion chamber; A second design module 220 is configured to design third structural parameters of the inner and outer annular cavities of the hydrogen fuel combustion chamber based on the first structural parameters and the second structural parameters; A detection module 230 is configured to detect whether a geometric dimension of the hydrogen fuel combustion chamber exceeds a geometric dimension constraint condition based on the first structural parameter, the second structural parameter, and the third structural parameter; The drawing module 240 is configured to draw a two-dimensional flow path based on the first structural parameter, the second structural parameter and the third structural parameter if it is not exceeded, and determine the combustion control law of the hydrogen fuel combustion chamber based on the control law of the engine.

[0124] In an exemplary embodiment of the present invention, the first design module 210 includes: A first calculation submodule, configured to calculate a first head flow rate of the pre-combustion stage combustion chamber based on an assumed total combustion chamber equivalence ratio and a combustion chamber head equivalence ratio; a second calculation submodule, configured to calculate a first head area of ​​the pre-combustion stage combustion chamber based on the first head flow rate and an assumed pre-combustion stage head reference speed, and calculate a first head height of the pre-combustion stage combustion chamber according to the first head area; A third calculation submodule is configured to calculate a first flame tube length of the pre-combustion stage combustion chamber based on an assumed first ratio; wherein the first ratio is a ratio of the first flame tube length of the pre-combustion stage combustion chamber to a first head height; A fourth calculation submodule, configured to calculate a first cold state residence time of the pre-combustion stage combustion chamber according to the first head height and the first flame tube length; a fifth calculation submodule, configured to calculate a first characteristic parameter according to the first head area and the first head height, and calculate a first combustion efficiency of the pre-combustion stage combustion chamber according to the first characteristic parameter; A first detection submodule, configured to detect whether the first combustion efficiency meets a first preset efficiency condition; a first jump submodule configured to jump to the execution step of calculating the first head area of ​​the pre-combustion stage combustion chamber based on the first head flow rate and an assumed pre-combustion stage head reference speed, if not satisfied, until the first combustion efficiency satisfies the first preset efficiency condition; a sixth calculation submodule, configured to calculate a first outlet temperature distribution coefficient of the pre-combustion stage combustion chamber according to the first head height and the first flame tube length; A second detection submodule is configured to detect whether the first outlet temperature distribution coefficient meets a first preset temperature distribution coefficient requirement; The second jump submodule is configured to jump to the execution step of calculating the first head area of ​​the pre-combustion stage combustion chamber based on the first head flow and the assumed pre-combustion stage head reference speed if it is not satisfied, until the first outlet temperature distribution coefficient meets the first preset temperature distribution coefficient requirement.

[0125] In an exemplary embodiment of the present invention, the first design module 210 includes: a seventh calculation submodule, configured to calculate a second head flow rate of the main combustion stage combustion chamber based on an assumed total combustion chamber equivalence ratio and a combustion chamber head equivalence ratio; an eighth calculation submodule, configured to calculate a second head area of ​​the main combustion stage combustion chamber based on the second head flow rate and an assumed main combustion stage head reference speed, and calculate a second head height of the main combustion stage combustion chamber according to the second head area; A ninth calculation submodule is configured to calculate the second flame tube length of the main combustion stage combustion chamber based on an assumed second ratio; wherein the second ratio is a ratio of the second flame tube length of the main combustion stage combustion chamber to a second head height; a tenth calculation submodule, configured to calculate a second cold state residence time of the main combustion stage combustion chamber according to the second head height and the second flame tube length; an eleventh calculation submodule, configured to calculate a second characteristic parameter according to the main second head area and the second head height, and calculate a second combustion efficiency of the main combustion stage combustion chamber according to the second characteristic parameter; a third detection submodule, configured to detect whether the second combustion efficiency meets a second preset efficiency condition; a third jump submodule, configured to jump to the execution step of calculating the second head area of ​​the main combustion stage combustion chamber based on the second head flow rate and the assumed main combustion stage head reference speed if the condition is not satisfied, until the second combustion efficiency satisfies the second preset efficiency condition; A twelfth calculation submodule is configured to calculate a second outlet temperature distribution coefficient of the main combustion stage combustion chamber according to the second head height and the second flame tube length; a fourth detection submodule, configured to detect whether the second outlet temperature distribution coefficient meets a second preset temperature distribution coefficient requirement; The fourth jump submodule is configured to jump to the execution step to calculate the second head area of ​​the main combustion stage combustion chamber based on the second head flow and the assumed main combustion stage head reference speed if it is not met, until the second outlet temperature distribution coefficient meets the second preset temperature distribution coefficient requirement.

[0126] In an exemplary embodiment of the present invention, the hydrogen fuel combustion chamber staged combustion design device further includes: The jump module is configured to, if exceeded, jump to the execution step to calculate the second head area of ​​the main combustion stage combustion chamber based on the second head flow and the assumed main combustion stage head reference speed until the geometric dimensions of the hydrogen fuel combustion chamber do not exceed the geometric dimension constraints.

[0127] In an exemplary embodiment of the present invention, the second design module 220 includes: A thirteenth calculation submodule is configured to calculate the annular cavity flow rates of the inner and outer annular cavities of the hydrogen fuel combustion chamber based on the first head flow rate in the first structural parameter and the second head flow rate in the second structural parameter; A fourteenth calculation submodule is configured to calculate the annular cavity area based on the annular cavity flow rate and an assumed annular cavity air flow rate; A fifteenth calculation submodule is configured to calculate a reference cross-sectional height of the hydrogen fuel combustion chamber according to the annular cavity area; The sixteenth calculation submodule is configured to calculate the annular cavity height according to the reference section height, the first head height in the first structural parameter, and the second head height in the second structural parameter.

[0128] In an exemplary embodiment of the present invention, the drawing module 240 includes: The drawing submodule is configured to draw the two-dimensional flow path according to the first head height and the first flame tube length in the first structural parameter, the second head height and the second flame tube length in the second structural parameter, and the annular cavity height in the third structural parameter.

[0129] In an exemplary embodiment of the present invention, the drawing module 240 includes: A first determination submodule is configured to determine operating condition information based on a control law of the engine; The second determination submodule is configured to determine the combustion control law of the pre-combustion stage combustion chamber and the main combustion stage combustion chamber according to the operating condition information; wherein, when the pre-combustion stage combustion chamber or the main combustion stage combustion chamber is connected based on the combustion control law, the total equivalence ratio of the combustion chamber meets the preset equivalence ratio requirement.

[0130] Figure 3 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 3As shown, the electronic device may include: a processor 310, a communication interface 320, a memory 330 and a communication bus 340, wherein the processor 310, the communication interface 320 and the memory 330 communicate with each other through the communication bus 340. The processor 310 may call the logic instructions in the memory 330 to execute the hydrogen fuel combustion chamber staged combustion design method, the method comprising: designing the first structural parameter of the pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber based on the assumed design parameters, and designing the second structural parameter of the main combustion stage combustion chamber of the hydrogen fuel combustion chamber; designing the third structural parameter of the inner and outer annular cavities of the hydrogen fuel combustion chamber based on the first structural parameter and the second structural parameter; detecting whether the geometric size of the hydrogen fuel combustion chamber exceeds the geometric size constraint condition based on the first structural parameter, the second structural parameter and the third structural parameter; if not, drawing a two-dimensional flow path based on the first structural parameter, the second structural parameter and the third structural parameter, and determining the combustion control law of the hydrogen fuel combustion chamber based on the control law of the engine.

[0131] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0132] On the other hand, the present invention also provides a computer program product, which includes a computer program, which can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the hydrogen fuel combustion chamber staged combustion design method provided by the above methods, which method includes: based on assumed design parameters, designing the first structural parameters of the pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber, and designing the second structural parameters of the main combustion stage combustion chamber of the hydrogen fuel combustion chamber; based on the first structural parameters and the second structural parameters, designing the third structural parameters of the inner and outer annular cavities of the hydrogen fuel combustion chamber; based on the first structural parameters, the second structural parameters and the third structural parameters, detecting whether the geometric dimensions of the hydrogen fuel combustion chamber exceed the geometric dimension constraints; if not, drawing a two-dimensional flow path based on the first structural parameters, the second structural parameters and the third structural parameters, and determining the combustion control law of the hydrogen fuel combustion chamber based on the control law of the engine.

[0133] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the hydrogen fuel combustion chamber staged combustion design method provided by the above-mentioned methods, the method comprising: designing the first structural parameters of the pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber based on assumed design parameters, and designing the second structural parameters of the main combustion stage combustion chamber of the hydrogen fuel combustion chamber; designing the third structural parameters of the inner and outer annular cavities of the hydrogen fuel combustion chamber based on the first structural parameters and the second structural parameters; detecting whether the geometric dimensions of the hydrogen fuel combustion chamber exceed the geometric dimension constraints based on the first structural parameters, the second structural parameters and the third structural parameters; if not, drawing a two-dimensional flow path based on the first structural parameters, the second structural parameters and the third structural parameters, and determining the combustion control law of the hydrogen fuel combustion chamber based on the control law of the engine.

[0134] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0135] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydrogen fuel combustion chamber staged combustion design method, characterized in that: include: Based on the assumed design parameters, first structural parameters of a pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber are designed, and second structural parameters of a main combustion stage combustion chamber of the hydrogen fuel combustion chamber are designed; Based on the first structural parameter and the second structural parameter, designing the third structural parameter of the inner and outer annular cavities of the hydrogen fuel combustion chamber; Based on the first structural parameter, the second structural parameter and the third structural parameter, detecting whether the geometric size of the hydrogen fuel combustion chamber exceeds a geometric size constraint condition; If not exceeded, a two-dimensional flow path is drawn based on the first structural parameter, the second structural parameter and the third structural parameter, and a combustion control law of the hydrogen fuel combustion chamber is determined based on a control law of the engine.

2. The hydrogen fuel combustion chamber staged combustion design method according to claim 1, characterized in that: The designing of the first structural parameters of the pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber based on the assumed design parameters includes: Calculating a first head flow rate of the pre-combustion stage combustion chamber based on an assumed total combustion chamber equivalence ratio and a combustion chamber head equivalence ratio; Calculating a first head area of ​​the pre-combustion stage combustion chamber based on the first head flow rate and an assumed pre-combustion stage head reference speed, and calculating a first head height of the pre-combustion stage combustion chamber according to the first head area; Based on the assumed first ratio, calculating the first flame tube length of the pre-combustion stage combustion chamber; wherein the first ratio is the ratio of the first flame tube length of the pre-combustion stage combustion chamber to the first head height; Calculate the first cold state residence time of the pre-combustion stage combustion chamber according to the first head height and the first flame tube length; Calculating a first characteristic parameter according to the first head area and the first head height, and calculating a first combustion efficiency of the pre-combustion stage combustion chamber according to the first characteristic parameter; detecting whether the first combustion efficiency satisfies a first preset efficiency condition; If not, skipping to the step of calculating the first head area of ​​the pre-combustion stage combustion chamber based on the first head flow rate and the assumed pre-combustion stage head reference speed until the first combustion efficiency meets the first preset efficiency condition; Calculating a first outlet temperature distribution coefficient of the pre-combustion stage combustion chamber according to the first head height and the first flame tube length; Detecting whether the first outlet temperature distribution coefficient meets a first preset temperature distribution coefficient requirement; If not satisfied, the jump execution step is to calculate the first head area of ​​the pre-combustion stage combustion chamber based on the first head flow and the assumed pre-combustion stage head reference speed until the first outlet temperature distribution coefficient meets the first preset temperature distribution coefficient requirement.

3. The hydrogen fuel combustion chamber staged combustion design method according to claim 1, characterized in that: The design of the second structural parameter of the main combustion stage combustion chamber of the hydrogen fuel combustion chamber comprises: Calculating a second head flow rate of the main combustion stage combustion chamber based on an assumed total combustion chamber equivalence ratio and a combustion chamber head equivalence ratio; Calculating a second head area of ​​the main combustion stage combustion chamber based on the second head flow rate and an assumed main combustion stage head reference speed, and calculating a second head height of the main combustion stage combustion chamber according to the second head area; Based on the assumed second ratio, the second flame tube length of the main combustion stage combustion chamber is calculated; wherein the second ratio is the ratio of the second flame tube length of the main combustion stage combustion chamber to the second head height; Calculate the second cold state residence time of the main combustion stage combustion chamber according to the second head height and the second flame tube length; Calculating a second characteristic parameter according to the main second head area and the second head height, and calculating a second combustion efficiency of the main combustion stage combustion chamber according to the second characteristic parameter; detecting whether the second combustion efficiency satisfies a second preset efficiency condition; If not, jump to the execution step of calculating the second head area of ​​the main combustion stage combustion chamber based on the second head flow rate and the assumed main combustion stage head reference speed until the second combustion efficiency meets the second preset efficiency condition; Calculating a second outlet temperature distribution coefficient of the main combustion stage combustion chamber according to the second head height and the second flame tube length; Detecting whether the second outlet temperature distribution coefficient meets a second preset temperature distribution coefficient requirement; If not satisfied, the jump execution step is to calculate the second head area of ​​the main combustion stage combustion chamber based on the second head flow and the assumed main combustion stage head reference speed until the second outlet temperature distribution coefficient meets the second preset temperature distribution coefficient requirement.

4. The hydrogen fuel combustion chamber staged combustion design method according to claim 3, characterized in that: After detecting whether the geometric dimensions of the hydrogen fuel combustion chamber exceed geometric dimension constraints, the method further comprises: If exceeded, the jump execution step is to calculate the second head area of ​​the main combustion stage combustion chamber based on the second head flow and the assumed main combustion stage head reference speed until the geometric dimensions of the hydrogen fuel combustion chamber do not exceed the geometric dimension constraints.

5. The hydrogen fuel combustion chamber staged combustion design method according to claim 1, characterized in that: The designing of the third structural parameters of the inner and outer annular cavities of the hydrogen fuel combustion chamber based on the first structural parameters and the second structural parameters includes: Calculating the annular cavity flows of the inner and outer annular cavities of the hydrogen fuel combustion chamber based on the first head flow in the first structural parameter and the second head flow in the second structural parameter; Calculating the annulus area based on the annulus flow rate and an assumed annulus air flow rate; Calculating a reference cross-sectional height of the hydrogen fuel combustion chamber according to the annular cavity area; The annular cavity height is calculated according to the reference cross-section height, the first head height in the first structural parameter, and the second head height in the second structural parameter.

6. The hydrogen fuel combustor staged combustion design method according to any one of claims 1 to 5, characterized in that: The drawing of a two-dimensional flow path based on the first structural parameter, the second structural parameter and the third structural parameter comprises: The two-dimensional flow path is drawn according to the first head height and the first flame tube length in the first structural parameter, the second head height and the second flame tube length in the second structural parameter, and the annular cavity height in the third structural parameter.

7. The hydrogen fuel combustor staged combustion design method according to any one of claims 1 to 5, characterized in that: The method of determining the combustion control law of the hydrogen fuel combustion chamber based on the control law of the engine includes: Determining operating condition information based on a control law of the engine; The combustion control law of the pre-combustion stage combustion chamber and the main combustion stage combustion chamber is determined according to the operating condition information; wherein, when the pre-combustion stage combustion chamber or the main combustion stage combustion chamber is connected based on the combustion control law, the total equivalence ratio of the combustion chamber meets the preset equivalence ratio requirement.

8. A hydrogen fuel combustion chamber staged combustion design device, characterized in that: include: A first design module is configured to design a first structural parameter of a pre-combustion stage combustion chamber of the hydrogen fuel combustion chamber based on an assumed design parameter, and to design a second structural parameter of a main combustion stage combustion chamber of the hydrogen fuel combustion chamber; A second design module is configured to design third structural parameters of the inner and outer annular cavities of the hydrogen fuel combustion chamber based on the first structural parameters and the second structural parameters; a detection module configured to detect whether a geometric dimension of the hydrogen fuel combustion chamber exceeds a geometric dimension constraint condition based on the first structural parameter, the second structural parameter and the third structural parameter; The drawing module is configured to draw a two-dimensional flow path based on the first structural parameter, the second structural parameter and the third structural parameter if it is not exceeded, and determine the combustion control law of the hydrogen fuel combustion chamber based on the control law of the engine.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the hydrogen fuel combustion chamber staged combustion design method as described in any one of claims 1 to 7 is implemented.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for designing staged combustion of a hydrogen fuel combustor as claimed in any one of claims 1 to 7 is implemented.

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