Optimization Method, Device, Computer Equipment and Readable Storage Medium of Burner

Abstract

This application belongs to the field of burners, and discloses an optimization method, device, computer device, and readable storage medium for a burner. The burner includes a combustion chamber. The method includes: obtaining the designed length and designed porosity of a porous support plate in the combustion chamber; inputting the designed length and designed porosity of the porous support plate into a pre-established combustion simulation model of the combustion chamber to output the flame height in the combustion chamber; if the flame height output by the combustion simulation model of the combustion chamber is greater than a preset flame height threshold, adjusting the designed length and / or designed porosity of the porous support plate, and performing the step of inputting the designed length and designed porosity of the porous support plate into the pre-established combustion simulation model of the combustion chamber until the flame height output by the combustion simulation model of the combustion chamber is less than or equal to the preset flame height threshold. Using this application, the combustion chamber can be designed based on making the flame height more reasonable.

Description

Technical Field

[0001] The present application relates to the technical field of burners, and in particular to a burner optimization method, device, computer equipment, and readable storage medium. Background Art

[0002] Currently, household gas water heaters utilize fully premixed combustion technology, which involves thoroughly mixing the fuel and air before entering the combustion chamber nozzle. This allows the gas molecules to be fully dispersed and mixed in the premixing chamber. This allows the gas to burn faster and more efficiently, without being constrained by physical conditions such as gas diffusion speed.

[0003] In existing gas water heaters, improper combustion chamber design results in a high flame height. The higher the flame height, the lower the combustion energy efficiency. Therefore, designing the combustion chamber to achieve a more optimal flame height is a technical problem that needs to be solved. Summary of the Invention

[0004] Based on this, it is necessary to provide a burner optimization method, device, computer equipment and readable storage medium to address the above technical problems.

[0005] In a first aspect, a method for optimizing a burner is provided, wherein the burner includes a combustion chamber, and the method includes:

[0006] Obtaining a designed length and a designed porosity of a porous support plate in the combustion chamber;

[0007] Inputting the designed length and porosity of the porous support plate into a pre-established combustion simulation model of the combustion chamber, and outputting the flame height in the combustion chamber;

[0008] If the flame height output by the combustion chamber combustion simulation model is greater than a preset flame height threshold, the design length and / or design porosity of the porous support plate are adjusted, and the step of inputting the design length and design porosity of the porous support plate into the pre-established combustion chamber simulation model is performed until the flame height output by the combustion chamber combustion simulation model is less than or equal to the preset flame height threshold.

[0009] As an optional embodiment, before obtaining the length and porosity of the porous support plate of the combustion chamber, the method further includes:

[0010] Obtaining structural data of the combustion chamber, an initial length and an initial porosity of the porous support plate, establishing a physical structure of the combustion chamber based on a modeling tool, and performing fluid domain extraction on the physical structure to obtain a geometric model of the fluid domain;

[0011] Performing mesh division on the geometric model to obtain mesh data of the geometric model;

[0012] Based on an algorithm tool, a preset differential equation algorithm is used to calculate the grid data to obtain the combustion chamber combustion simulation model.

[0013] As an optional embodiment, adjusting the design length and / or design porosity of the porous support plate includes:

[0014] The design length of the porous support plate is increased by a preset length adjustment step;

[0015] The designed porosity of the porous support plate is increased by a preset porosity adjustment step.

[0016] As an optional implementation, the method further includes:

[0017] In the process of establishing the geometric model, boundary conditions for the mixed gas entering and exiting the combustion chamber are set;

[0018] The mixed gas is a mixture of fuel gas and air that enters the combustion chamber for combustion; the boundary conditions include inlet conditions and outlet conditions; the inlet conditions include excess oxygen concentration, flow rate, temperature and heat load; the outlet conditions include pressure and wall conditions.

[0019] As an optional implementation, the grid is a tetrahedral unit grid; the grid quality is greater than or equal to a preset grid quality.

[0020] In a second aspect, a burner optimization device is provided, wherein the burner includes a combustion chamber, and the device includes:

[0021] an acquisition module, configured to acquire a design length and a design porosity of a porous support plate in the combustion chamber;

[0022] An input module, configured to input the designed length and porosity of the porous support plate into a pre-established combustion simulation model of the combustion chamber, and output the flame height in the combustion chamber;

[0023] An adjustment module is configured to adjust the design length and / or design porosity of the porous support plate if the flame height output by the combustion chamber combustion simulation model is greater than a preset flame height threshold, and execute the step of inputting the design length and design porosity of the porous support plate into a pre-established combustion chamber simulation model until the flame height output by the combustion chamber combustion simulation model is less than or equal to the preset flame height threshold.

[0024] As an optional implementation manner, the acquisition module is further configured to:

[0025] Obtaining structural data of the combustion chamber, an initial length and an initial porosity of the porous support plate, establishing a physical structure of the combustion chamber based on a modeling tool, and performing fluid domain extraction on the physical structure to obtain a geometric model of the fluid domain;

[0026] Performing mesh division on the geometric model to obtain mesh data of the geometric model;

[0027] Based on an algorithm tool, a preset differential equation algorithm is used to calculate the grid data to obtain the combustion chamber combustion simulation model.

[0028] As an optional implementation manner, the adjustment module is specifically configured to:

[0029] The design length of the porous support plate is increased by a preset length adjustment step;

[0030] The designed porosity of the porous support plate is increased by a preset porosity adjustment step.

[0031] As an optional implementation, the device further includes:

[0032] A setting module, for setting boundary conditions for the mixed gas entering and exiting the combustion chamber during the process of establishing the geometric model;

[0033] The mixed gas is a mixture of fuel gas and air that enters the combustion chamber for combustion; the boundary conditions include inlet conditions and outlet conditions; the inlet conditions include excess oxygen concentration, flow rate, temperature and heat load; the outlet conditions include pressure and wall conditions.

[0034] As an optional implementation, the grid is a tetrahedral unit grid; the grid quality is greater than or equal to a preset grid quality.

[0035] In a third aspect, a computer device is provided, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the method steps described in the first aspect are implemented.

[0036] In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method steps described in the first aspect are implemented.

[0037] The present application provides a burner optimization method, device, computer equipment and readable storage medium. The technical solution provided by the embodiments of the present application brings at least the following beneficial effects: by adjusting the design length and design porosity of the porous support plate through a pre-established combustion chamber combustion simulation model, the height of the flame output by the combustion chamber combustion simulation model is made more reasonable. The more reasonable the height of the flame is, the better the combustion energy supply efficiency is when supplying energy to the heat exchanger. This avoids the problem of the flame height being too high in the prior art, which results in a lower combustion energy supply efficiency of the flame. At the same time, the combustion chamber of the burner can also be designed based on the design length and design porosity of the porous support plate corresponding to a reasonable flame height. In this way, the flame combustion energy supply efficiency can be improved.

[0038] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in 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 only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 A schematic structural diagram of a burner provided in an embodiment of the present application;

[0041] Figure 2 A flow chart of a burner optimization method provided in an embodiment of the present application;

[0042] Figure 3 A schematic structural diagram of a combustion chamber provided in an embodiment of the present application;

[0043] Figure 4 A schematic diagram of a porous support plate provided in an embodiment of the present application;

[0044] Figure 5 A schematic diagram of a flame output from a combustion chamber combustion simulation model provided in an embodiment of the present application;

[0045] Figure 6 A schematic diagram of burner flame combustion provided in an embodiment of the present application;

[0046] Figure 7 A schematic structural diagram of a burner optimization device provided in an embodiment of the present application;

[0047] Figure 8 A schematic diagram of the structure of a computer device provided in an embodiment of the present application. Specific embodiments

[0048] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0049] An optimization method for a burner provided by an embodiment of the present application can be applied to the burner. Figure 1 The following is a schematic structural diagram of a burner provided by an embodiment of the present application. As Figure 1 shown, the burner includes a controller 101, a combustion chamber 102, a heat exchanger 103, and a premixing chamber 104. The controller 101 is respectively connected to the combustion chamber 102 and the premixing chamber 104. The premixing chamber 104 is connected to the combustion chamber 102, and the combustion chamber 102 is connected to the heat exchanger 103. The controller 101 is configured to control the mixed gas stored in the premixing chamber 104 to flow from the premixing chamber 104 to the combustion chamber 102, and control the combustion of the mixed gas after it enters the combustion chamber 102. The combustion chamber 102 is configured to receive the mixed gas coming out of the premixing chamber 104, burn in the combustion chamber 102, and the flame formed by the combustion provides energy to the heat exchanger 103. Among them, the flame structure mainly consists of a flame kernel region, a flame surface region, and a burnout region, and the heat exchanger 103 is mainly energized by the flame in the burnout region. The heat exchanger 103 is configured to absorb the heat energy provided by the combustion chamber 102 and heat the water inside the heat exchanger 103. The premixing chamber 104 is configured to fully mix the gas and air and store the mixed gas.

[0050] Next, a detailed description will be given of an optimization method for a burner provided by an embodiment of the present application in conjunction with specific embodiments. Figure 2 The following is a flowchart of an optimization method for a burner provided by an embodiment of the present application. As Figure 2 shown, the specific steps are as follows:

[0051] Step 201: Obtain the designed length and designed porosity of the porous support plate in the combustion chamber.

[0052] In implementation, due to the unreasonable design of the combustion chamber of the gas water heater, the turbulent flame height of the combustion in the combustion chamber of the gas water heater is relatively high. The structure of the premixed turbulent flame mainly consists of a flame kernel region, a flame surface region, and a burnout region. The total flame length of the turbulent flame can be expressed by the following formula: L f = L1 + δ2 + L3. L frepresents the total flame length of the turbulent flame, L1 represents the length of the flame core, δ2 represents the thickness of the flame face, and L3 represents the thickness of the burnout zone. The flame core is located at the bottom of the turbulent flame, the flame face is located in the middle, and the burnout zone is located at the outermost part of the turbulent flame. Furthermore, the turbulent flame primarily supplies energy to the heat exchanger through the burnout zone. Therefore, as the turbulent flame height increases, the combustion energy supply efficiency of the turbulent flame decreases. Therefore, the combustion chamber design should be optimized to optimize the turbulent flame height.

[0053] Furthermore, the flame core area of a turbulent flame is mainly related to the airflow velocity, the flame hole radius, and the flame propagation speed. It can be approximately considered that the formula for determining the length of the flame core area can be:

[0054]

[0055] Where L1 is the length of the flame core, v is the airflow velocity, r is the outflow radius of the flame hole, S T is the flame propagation velocity. The flame hole outflow radius is primarily determined by the larger flame hole, and given the same size, the flame hole outflow radius can be considered constant. The flame propagation velocity is primarily influenced by the mixed gas ratio, gas properties, initial mixture temperature, flame temperature, and pressure. For a constant mixed gas ratio (i.e., 5% excess oxygen), constant gas properties (i.e., natural gas), constant initial mixture temperature, and similar flame temperature and pressure, the flame propagation velocity can be approximately considered constant. Therefore, the length of the flame core of a turbulent flame is primarily determined by the gas velocity of the mixed gas.

[0056] Furthermore, the thickness of the flame front along the airflow axis of a turbulent flame depends on the flame's turbulent characteristics and the properties of the gas-air mixture. Given that the turbulent characteristics of flames vary little, and the gas-air mixture ratio at the combustion chamber inlet is constant, the thickness of the flame front can be assumed to be constant.

[0057] Furthermore, the thickness of the burnout zone of a turbulent flame depends primarily on the dynamic characteristics of the mixed gas and the airflow velocity (i.e., residence time). Since today's fuel gas is usually natural gas, the dynamic characteristics of a gas (natural gas)-air mixture are the same. Therefore, the formula for determining the thickness of the burnout zone of a mixed gas of a certain composition can be:

[0058] L3=Kv

[0059] Wherein, L3 represents the thickness of the burnout zone, v represents the air flow velocity, and k represents a constant.

[0060] In summary, for the fully premixed metal fiber burner, the height of the turbulent flame mainly depends on the air flow velocity of the mixed gas.

[0061] The mixed gas enters the combustion chamber from the inlet of the combustion chamber and then burns in the combustion chamber. After the turbulent flame passes through the holes of the support plate (porous support plate), it burns on the surface of the metal fiber. Therefore, the length L of the fire plate (the length L of the porous support plate) is the effective combustion size. The combustion heat energy of the turbulent flame passes through the outlet of the combustion chamber to supply energy to the heat exchanger. Therefore, reducing the flame height is related to the designed length and designed porosity of the porous support plate in the combustion chamber. Among them, the porosity is the percentage of the pore volume in the bulk material to the total volume of the material in its natural state. That is, the larger the porosity, the more the number of holes. Therefore, the controller needs to obtain the designed length and designed porosity of the porous support plate in the combustion chamber.

[0062] Step 202: Input the designed length and designed porosity of the porous support plate into the pre-established combustion simulation model of the combustion chamber, and output the flame height in the combustion chamber.

[0063] In implementation, the obtained designed length and designed porosity of the porous support plate are input into the pre-established combustion simulation model of the combustion chamber, and the combustion simulation model of the combustion chamber outputs the flame height of the turbulent flame in the combustion chamber. Among them, the combustion simulation model of the combustion chamber is a numerical simulation calculation model established by intercepting the middle longitudinal interface of the combustion chamber. Details such as the mixed gas inlet, porous support plate, metal fiber surface, overall combustion chamber, and combustion outlet of the combustion chamber are all established completely. Figure 3 The figure is a schematic structural diagram of a combustion chamber provided by an embodiment of the present application. As Figure 3 shown, the mixed gas enters the cavity of the combustion chamber from the inlet of the combustion chamber and then burns in the combustion chamber. After the turbulent flame passes through the holes of the support plate (porous support plate), it burns on the surface of the metal fiber. The length of the fire plate (the length of the porous support plate) is the effective combustion size. The combustion heat energy of the turbulent flame passes through the outlet of the combustion chamber to supply energy to the heat exchanger.

[0064] Before step 202, technicians need to pre-establish a combustion simulation model of the combustion chamber. The specific steps for establishing the combustion simulation model of the combustion chamber are as follows.

[0065] Step 1: Obtain the structural data of the combustion chamber, the initial length and initial porosity of the porous support plate, and based on the modeling tool, establish the physical structure of the combustion chamber and extract the fluid domain of the physical structure to obtain the geometric model of the fluid domain.

[0066] In implementation, when technicians establish the physical structure of the combustion chamber, they first obtain the structural data of the combustion chamber, the initial length, initial porosity, and pore morphology data of the porous support plate in the combustion chamber. The structural data includes the length, width, height, inlet size, outlet size, and wall size of the combustion chamber. Technicians use 3D modeling tools to establish the physical structure of the combustion chamber based on the data of the combustion chamber obtained above. Among them, the 3D modeling tools include modeling software pre and modeling software UG (Unigraphics NX, an interactive CAD / CAM system software developed based on the C language). After establishing the physical structure of the combustion chamber, fluid domain extraction is performed on the physical structure to obtain the geometric model of the fluid domain.

[0067] Furthermore, during the process of establishing the geometric model, the boundary conditions for the mixed gas entering and leaving the combustion chamber are set.

[0068] Among them, the mixed gas is a mixture of fuel gas and air entering the combustion chamber for combustion. The boundary conditions include inlet conditions and outlet conditions. The inlet conditions include excess oxygen concentration, flow rate, temperature, and heat load. The outlet conditions include pressure and wall conditions.

[0069] For example, when the inlet conditions are that the excess oxygen concentration of the mixed gas is 5%, the flow rate of the mixed gas is 9.5 m / s, the temperature of the mixed gas is 300 K, and the heat load is 30 kw, the mixed gas enters the cavity of the combustion chamber from the inlet of the combustion chamber. The initial temperature of the combustion chamber wall is 300 K. The outlet conditions are that the pressure in the combustion chamber reaches the preset pressure value, there is no velocity slip on the wall (that is, the velocity of the mixed gas on the wall is 0), the turbulent pulsation is zero, and the gas after combustion in the combustion chamber exits from the outlet of the combustion chamber.

[0070] Step two, perform mesh division on the geometric model to obtain the mesh data of the geometric model.

[0071] In implementation, when performing mesh division on the geometric model, the fluid domain is filled with virtual mesh elements, and the mesh data corresponding to the mesh elements is obtained, then the mesh data of the geometric model can be obtained.

[0072] Furthermore, the mesh is a tetrahedral element mesh. In order to better capture complex structures such as orifice plates, triangular element meshes are used. In order to avoid mesh data dissipation and numerical distortion, the mesh quality is greater than or equal to the preset mesh quality. Among them, the preset mesh quality can be 0.3.

[0073] Step three, based on the algorithm tool, use the preset differential equation algorithm to calculate the mesh data to obtain the combustion simulation model of the combustion chamber.

[0074] In implementation, based on algorithm tools, a combustion simulation model of the combustion chamber is obtained by calculating grid data using a preset differential equation algorithm. Among them, the preset differential equation algorithm includes a continuity equation, a momentum equation, a component equation, an energy equation, and a combustion rate control equation. Moreover, the preset differential equation algorithm needs to select a discrete format of the preset differential equation algorithm. Among them, the discrete formats include first-order discretization, second-order discretization, central discretization, two-end discretization, and relaxation factor, etc.

[0075] Step 203, if the flame height output by the combustion simulation model of the combustion chamber is greater than a preset flame height threshold, then adjust the designed length and / or designed porosity of the porous support plate, and execute the step of inputting the designed length and designed porosity of the porous support plate into a pre-established combustion chamber simulation model until the flame height output by the combustion simulation model of the combustion chamber is less than or equal to the preset flame height threshold.

[0076] In implementation, the mixed gas enters the combustion chamber from the inlet of the combustion chamber and then burns in the combustion chamber. After the turbulent flame passes through the holes of the porous support plate, it burns on the surface of the metal fiber. When the gas water heater burns gas to heat water, the supply amount of the mixed gas per unit time is constant. At the same time, by adjusting the designed length and / or designed porosity of the porous support plate, the number of holes in the porous support plate can be increased. Thus, with the supply amount of the mixed gas being constant and the number of holes in the porous support plate increasing, the flow rate of the mixed gas flowing through each hole of the porous support plate will correspondingly decrease, and the gas flow rate of the mixed gas passing through the holes will also decrease. As a result, the height of the flame will be reduced. Therefore, compare the flame height output by the combustion simulation model of the combustion chamber with the preset flame height threshold. If the flame height output by the combustion simulation model of the combustion chamber is greater than the preset flame height threshold, then it is necessary to adjust the designed length and / or designed porosity of the porous support plate. Input the adjusted designed length and / or designed porosity of the porous support plate into the pre-established combustion chamber simulation model step, compare the flame height re-output by the combustion chamber simulation model with the preset flame height threshold until the flame height output by the combustion simulation model of the combustion chamber is less than or equal to the preset flame height threshold. Otherwise, it is necessary to continuously readjust the designed length and / or designed porosity of the porous support plate.

[0077] As an optional implementation manner, the specific steps for adjusting the designed length and / or designed porosity of the porous support plate are as follows.

[0078] Step 1, increase the designed length of the porous support plate by a preset length adjustment step.

[0079] In practice, the design length of the porous support plate is increased by a preset length adjustment step. Because the number of holes per unit length area of the porous support plate is fixed, increasing the design length of the porous support plate by the preset length adjustment step also increases the number of holes in the porous support plate. Thus, by increasing the preset length adjustment step, the number of holes in the porous support plate can be increased, thereby reducing the height of the turbulent flame.

[0080] Step 2: The designed porosity of the porous support plate is increased by a preset porosity adjustment step.

[0081] In practice, the designed porosity of the porous support plate is increased by a preset porosity adjustment step. Increasing the designed porosity of the porous support plate increases the number of holes per unit area of the porous support plate. Thus, by increasing the preset porosity adjustment step, the number of holes in the porous support plate can be increased, thereby reducing the height of the turbulent flame.

[0082] For example, three schemes can be used to adjust the design length and / or design porosity of the porous support plate according to the flame height. Refer to Table 1, the table header is the scheme, the design length of the porous support plate (i.e., the effective combustion size), the hole morphology and the porosity. The schemes include Scheme 1, Scheme 2 and Scheme 3. The design length (i.e., the effective combustion size) of the porous support plate of Scheme 1 is 157*67 mm. The hole morphology is a strip hole (7 mm long, 0.65 mm wide, 23 rows horizontally and 9 rows vertically), and the design porosity is 7.34%. The design length (i.e., the effective combustion size) of the porous support plate of Scheme 2 is 157*67 mm. The hole morphology is a strip hole (7 mm long, 0.65 mm wide, 45 rows horizontally and 9 rows vertically), and the design porosity is 14.5%. The design length (i.e., effective combustion size) of the porous support plate of Scheme 3 is 187*97 mm, the hole shape is strip holes (7 mm long, 0.65 mm wide, 27 rows horizontally and 13 rows vertically), and the design porosity is 7.34%.

[0083] Table 1

[0084]

[0085]

[0086] Figure 4 Schematic diagram of a porous support plate provided in an embodiment of the present application. Figure 4 As shown, Figure 4Schematic diagram of a porous support plate including Solution 1, Solution 2, and Solution 3. The designed length of the porous support plate in Solution 1 is the initial length of 157 * 67 mm, and the designed porosity is the initial porosity of 7.34%. Taking Solution 1 as a reference, the designed length of the porous support plate in Solution 2 is the same as that in Solution 1, and the designed porosity is twice that of Solution 1. The designed length of the porous support plate in Solution 3 is 1.72 times that of Solution 1, and the designed porosity is the same as that in Solution 1.

[0087] Figure 5 Schematic diagram of the output flame of a combustion chamber combustion simulation model provided by an embodiment of the present application. As Figure 5 shown, Figure 5 it includes the flames of Solution 1, Solution 2, and Solution 3 output by the combustion chamber combustion simulation model. Technicians input the designed length of 157 * 67 mm and the designed porosity of 7.34% of the porous support plate in Solution 1 into the combustion chamber combustion simulation model, and the combustion chamber combustion simulation model outputs a flame height of 5 cm.

[0088] Technicians input the designed length of 157 * 67 mm and the designed porosity of 14.5% of the porous support plate in Solution 2 into the combustion chamber combustion simulation model, and the combustion chamber combustion simulation model outputs a flame height of 2 cm.

[0089] Technicians input the designed length of 187 * 97 mm and the designed porosity of 7.34% of the porous support plate in Solution 3 into the combustion chamber combustion simulation model, and the combustion chamber combustion simulation model outputs a flame height of 1 cm. Therefore, increasing the length and / or porosity of the porous support plate in the combustion chamber will reduce the flame height.

[0090] Figure 6 Schematic diagram of the flame combustion of a burner provided by an embodiment of the present application. As Figure 6 shown, Figure 6Flames of a burner combustion including porous support plates respectively for Solution 1, Solution 2, and Solution 3. Technicians measured the turbulent flame heights of Solution 1, Solution 2, and Solution 3 respectively, and obtained that the turbulent flame height of Solution 1 is 5 cm, the turbulent flame height of Solution 2 is 2 cm, and the turbulent flame height of Solution 3 is 1 cm. Because when the turbulent flame height is 1 - 2 cm, the burnout zone of the turbulent flame has a relatively high energy supply efficiency for the heat exchanger. Therefore, increasing the length and / or porosity of the porous support plate in the combustion chamber will reduce the flame height. Thus, based on the turbulent flame height of 1 - 2 cm, the designed length and designed porosity of the porous support plate in the combustion chamber combustion simulation model can be adjusted until the flame height output by the combustion chamber combustion simulation model is 1 - 2 cm. Furthermore, based on the designed length and designed porosity of the porous support plate in the combustion chamber combustion simulation model corresponding to the flame height of 1 - 2 cm, the combustion chamber of the burner can be designed. In this way, the combustion energy supply efficiency of the flame in the combustion chamber can be made higher.

[0091] The embodiment of the present application provides an optimization method for a burner. By means of a pre-established combustion chamber combustion simulation model, the designed length and designed porosity of the porous support plate are adjusted, so that the height of the flame output by the combustion chamber combustion simulation model is more reasonable. The more reasonable height of the flame enables the improvement of the combustion energy supply efficiency when supplying energy to the heat exchanger. It avoids the problem of low combustion energy supply efficiency of the flame caused by the relatively high flame height in the prior art. At the same time, the combustion chamber of the burner can also be designed according to the designed length and designed porosity of the porous support plate corresponding to the reasonable flame height. In this way, the combustion energy supply efficiency of the flame can be improved.

[0092] It should be understood that although Figure 2 the steps in the flowchart of Figure 2 are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover,

[0093] at least a part of the steps in

[0094] The embodiment of the present application also provides a burner optimization device, such as Figure 7 As shown, the device includes:

[0095] An acquisition module 701 is configured to acquire a design length and a design porosity of a porous support plate in the combustion chamber;

[0096] An input module 702 is configured to input the designed length and porosity of the porous support plate into a pre-established combustion chamber combustion simulation model, and output the flame height in the combustion chamber;

[0097] The adjustment module 703 is used to adjust the design length and / or design porosity of the porous support plate if the flame height output by the combustion chamber combustion simulation model is greater than a preset flame height threshold, and execute the step of inputting the design length and design porosity of the porous support plate into the pre-established combustion chamber simulation model until the flame height output by the combustion chamber combustion simulation model is less than or equal to the preset flame height threshold.

[0098] As an optional implementation, the acquisition module 701 is further configured to:

[0099] Obtaining structural data of the combustion chamber, an initial length and an initial porosity of the porous support plate, establishing a physical structure of the combustion chamber based on a modeling tool, and performing fluid domain extraction on the physical structure to obtain a geometric model of the fluid domain;

[0100] Performing mesh division on the geometric model to obtain mesh data of the geometric model;

[0101] Based on an algorithm tool, a preset differential equation algorithm is used to calculate the grid data to obtain the combustion chamber combustion simulation model.

[0102] As an optional implementation, the adjustment module 703 is specifically configured to:

[0103] The design length of the porous support plate is increased by a preset length adjustment step;

[0104] The designed porosity of the porous support plate is increased by a preset porosity adjustment step.

[0105] As an optional implementation, the device further includes:

[0106] A setting module, used for setting boundary conditions for the mixed gas entering and exiting the combustion chamber during the process of establishing the geometric model;

[0107] The mixed gas is a mixture of fuel gas and air entering the combustion chamber for combustion; the boundary conditions include inlet conditions and outlet conditions; the inlet conditions include excess oxygen concentration, flow rate, temperature, and heat load; the outlet conditions include pressure and wall conditions.

[0108] As an alternative implementation, the mesh is a tetrahedral element mesh; the mesh quality is greater than or equal to a preset mesh quality.

[0109] The embodiment of the present application provides an optimization device for a burner. By means of a pre-established combustion simulation model of the combustion chamber, the designed length and designed porosity of the porous support plate are adjusted, so that the height of the flame output by the combustion simulation model of the combustion chamber is more reasonable. The more reasonable height of the flame enables the improvement of the combustion energy supply efficiency when supplying energy to the heat exchanger. It avoids the problem of low combustion energy supply efficiency of the flame caused by the relatively high height of the flame in the prior art. At the same time, the combustion chamber of the burner can be designed according to the designed length and designed porosity of the porous support plate corresponding to the reasonable flame height. In this way, the combustion energy supply efficiency of the flame can be improved.

[0110] For the specific limitations of the optimization device for the burner, reference can be made to the limitations of the optimization method for the burner in the above text, which will not be elaborated here. Each module in the above optimization device for the burner can be implemented in whole or in part by software, hardware, and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory of the computer device in the form of software, so as to facilitate the processor to call and execute the operations corresponding to the above-mentioned modules.

[0111] In one embodiment, a computer device is provided, as Figure 8 shown, including a memory and a processor. A computer program that can run on the processor is stored on the memory. When the processor executes the computer program, the method steps for optimizing the burner as described above are implemented.

[0112] In one embodiment, a computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for optimizing the burner as described above are implemented.

[0113] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the embodiments provided in the present application can include non-volatile and / or volatile memories. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM), etc.

[0114] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including an..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0115] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for display, data for analysis, etc.) involved in the present application are all information and data authorized by the user or fully authorized by all parties.

[0116] Each embodiment in this specification is described in a related manner. For the same or similar parts among the embodiments, reference can be made to each other, and the differences between each embodiment and other embodiments are emphasized. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and reference can be made to the corresponding part of the method embodiment for the related content.

[0117] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0118] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An optimization method for a burner, characterized in that, The burner includes a combustion chamber, and the method includes: Obtaining the structural data of the combustion chamber, the initial length and initial porosity of the porous support plate, and based on a modeling tool, establishing the solid structure of the combustion chamber, and performing fluid domain extraction on the solid structure to obtain the geometric model of the fluid domain; performing mesh division on the geometric model to obtain the mesh data of the geometric model; based on an algorithm tool, using a preset differential equation algorithm to calculate the mesh data to obtain the combustion simulation model of the combustion chamber; Obtaining the designed length and designed porosity of the porous support plate in the combustion chamber; Inputting the designed length and designed porosity of the porous support plate into the pre-established combustion simulation model of the combustion chamber, and outputting the flame height in the combustion chamber; If the flame height output by the combustion simulation model of the combustion chamber is greater than the preset flame height threshold, adjusting the designed length and / or designed porosity of the porous support plate, and performing the step of inputting the designed length and designed porosity of the porous support plate into the pre-established combustion simulation model of the combustion chamber until the flame height output by the combustion simulation model of the combustion chamber is less than or equal to the preset flame height threshold.

2. The optimization method according to claim 1, characterized in that The adjusting the designed length and / or designed porosity of the porous support plate includes: Increasing the designed length of the porous support plate by a preset length adjustment step; Increasing the designed porosity of the porous support plate by a preset porosity adjustment step.

3. The optimization method according to claim 1, wherein The method further includes: During the process of establishing the geometric model, setting the boundary conditions for the mixture gas to enter and exit the combustion chamber; The mixture gas is a mixture of fuel gas and air entering the combustion chamber for combustion; the boundary conditions include inlet conditions and outlet conditions; the inlet conditions include excess oxygen concentration, flow rate, temperature, and heat load; the outlet conditions include pressure and wall conditions.

4. The optimization method according to claim 1, wherein The mesh is a tetrahedral element mesh; the mesh quality is greater than or equal to the preset mesh quality.

5. An optimization device for a burner, characterized in that, The burner includes a combustion chamber, and the device includes: An obtaining module, configured to obtain the structural data of the combustion chamber, the initial length and initial porosity of the porous support plate, and based on a modeling tool, establish the solid structure of the combustion chamber, and perform fluid domain extraction on the solid structure to obtain the geometric model of the fluid domain; perform mesh division on the geometric model to obtain the mesh data of the geometric model; based on an algorithm tool, use a preset differential equation algorithm to calculate the mesh data to obtain the combustion simulation model of the combustion chamber; An obtaining module, configured to obtain the designed length and designed porosity of the porous support plate in the combustion chamber; An input module, configured to input the designed length and designed porosity of the porous support plate into the pre-established combustion simulation model of the combustion chamber, and output the flame height in the combustion chamber; An adjustment module, configured to, if the flame height output by the combustion chamber combustion simulation model is greater than a preset flame height threshold, adjust the designed length and / or the designed porosity of the porous support plate, and perform the step of inputting the designed length and the designed porosity of the porous support plate into a pre-established combustion chamber simulation model until the flame height output by the combustion chamber combustion simulation model is less than or equal to the preset flame height threshold.

6. The optimization device according to claim 5, wherein The adjustment module is specifically configured to: increase the designed length of the porous support plate by a preset length adjustment step; increase the designed porosity of the porous support plate by a preset porosity adjustment step.

7. A computer device, comprising a memory and a processor, wherein a computer program capable of running on the processor is stored on the memory, characterized in that When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 4.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the method according to any one of claims 1 to 4.

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