Method and device for determining the number of radial flow vanes

Abstract

The application provides a radial rotating flow vane number determination method and device. The radial rotating flow vane number determination method comprises the following steps: simulating the rotating process of air flow through radial rotating flow vanes according to a preset target condition to generate a vane number determination model; and determining the number of the radial rotating flow vanes according to the vane number determination model. The application can guide the radial rotating flow vane designers of a rotating flow combustor to quickly determine the number of vanes according to the rotating flow intensity.

Description

Technical Field

[0001] This invention relates to the technical field of industrial boiler combustion equipment, specifically to a method and apparatus for determining the number of radial swirl blades. Background Technology

[0002] Swirl burners are a type of combustion device widely used in industrial boilers. Swirl burners typically operate by means of... Figure 1 The flow guiding device 10 shown achieves swirling flow. For example... Figure 1 As shown, the swirl burner includes a primary air duct 21, an inner secondary air duct 22, and an outer secondary air duct 23 connected to the flow guiding device 10. The angle of the radial swirl blades 2 is used to control both the volume of airflow and the tangential component of the inlet velocity, both of which together determine the swirl intensity of the burner nozzle flow field. The swirl intensity of the burner nozzle flow field is a crucial indicator affecting the performance of the swirl burner. It determines the burner nozzle's ability to entrain high-temperature flue gas in the furnace, which is essential for maintaining stable, continuous, and efficient combustion.

[0003] Existing technologies provide methods for adjusting the optimal angle of radial swirl blades, but no reference method is given for determining the number of radial swirl blades when designing them. Summary of the Invention

[0004] The method and apparatus for determining the number of radial swirl blades provided by this invention can guide designers of radial swirl burners to quickly determine the number of blades based on the swirl intensity.

[0005] To achieve the above objectives, firstly, this invention provides a method for determining the number of radial swirl blades, including:

[0006] Based on the preset target conditions, the airflow is simulated as it rotates through the radial swirl blades to generate a model that determines the number of blades.

[0007] The number of radial swirl blades is determined based on the blade number determination model.

[0008] In one embodiment, the target condition includes: the swirl intensity generated when the airflow passes through the radial swirl blades is at its maximum.

[0009] In one embodiment, the step of simulating the airflow rotation process through radial swirl blades according to preset target conditions to generate a model for determining the number of blades includes:

[0010] Under the target conditions, a mapping relationship between the swirl intensity and the number of blades is established to generate the number determination model.

[0011] In one embodiment, determining the number of radial swirl blades based on the blade number determination model includes:

[0012] Solve the model for determining the number of blades, and determine the number of radial swirl blades by combining the parameters of the radial swirl blades.

[0013] In a second aspect, the present invention provides a device for determining the number of radial swirl blades, the device comprising:

[0014] The number determination model generation module is used to simulate the airflow process through the radial swirl blades based on preset target conditions, so as to generate a blade number determination model.

[0015] The blade number determination module is used to determine the number of radial swirl blades based on the blade number determination model.

[0016] In one embodiment, the target condition includes: the swirl intensity generated when the airflow passes through the radial swirl blades is at its maximum.

[0017] In one embodiment, the quantity determination model generation module includes:

[0018] A quantity determination model generation unit is used to establish a mapping relationship between the swirl intensity and the number of blades under the target conditions, so as to generate the quantity determination model.

[0019] In one embodiment, the blade number determination module includes:

[0020] The blade number determination unit is used to solve the blade number determination model and determine the number of radial swirl blades in combination with the radial swirl blade parameters.

[0021] Thirdly, the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of a method for determining the number of radial swirl blades.

[0022] Fourthly, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of a method for determining the number of radial swirl blades.

[0023] As described above, the method and apparatus for determining the number of radial swirl blades provided in this embodiment of the invention include: firstly, simulating the rotation process of airflow through radial swirl blades according to preset target conditions to generate a blade number determination model; then, determining the number of radial swirl blades based on the blade number determination model. This invention can guide designers of radial swirl burners to quickly determine the number of blades based on swirl intensity. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the swirl burner structure provided in an embodiment of the present invention;

[0026] Figure 2 This is a flowchart illustrating the method for determining the number of radial swirl blades provided in an embodiment of the present invention.

[0027] Figure 3 This is a flowchart illustrating step 101 of the method for determining the number of radial swirl blades in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the radial swirl blade structure in an embodiment of the present invention;

[0029] Figure 5 This is a flowchart illustrating step 200 of the method for determining the number of radial swirl blades in an embodiment of the present invention.

[0030] Figure 6 This is a schematic diagram showing the correspondence between the maximum swirl intensity for different numbers of blades in a specific application example of the present invention;

[0031] Figure 7 This is a flowchart illustrating the method for determining the number of radial swirl blades in a specific application example of the present invention.

[0032] Figure 8 This is a schematic diagram of the structure of the radial swirl blade number determination device in an embodiment of the present invention;

[0033] Figure 9 This is a schematic diagram of the structure of the quantity determination model generation module 10 in an embodiment of the present invention;

[0034] Figure 10 This is a schematic diagram of the structure of the blade quantity determination module 20 in an embodiment of the present invention;

[0035] Figure 11 This is a schematic diagram of the structure of an electronic device in an embodiment of the present invention. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0038] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product or device.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] An embodiment of the present invention provides a specific implementation of a method for determining the number of radial swirl blades, see [link to specific implementation]. Figure 2 The method specifically includes the following:

[0041] Step 100: Based on the preset target conditions, simulate the airflow process as it rotates through the radial swirl blades to generate a model for determining the number of blades;

[0042] Since the main function of the radial swirl blades is to generate swirl in the secondary air of the burner, thereby entraining high-temperature flue gas and making the combustion of the burner more stable, the optimal number of blades is when the swirl intensity generated by the radial swirl blades is maximized. Therefore, the maximization of the swirl intensity in the burner nozzle flow field can be set as the target condition.

[0043] Step 200: Determine the number of radial swirl blades based on the blade number determination model.

[0044] Specifically, the model for determining the number of blades in step 200 is solved, and the optimal number of radial swirl blades is determined comprehensively based on the on-site construction conditions and the processing difficulty of the radial swirl blades.

[0045] As described above, the method for determining the number of radial swirl blades provided in this embodiment of the invention includes: firstly, simulating the rotation process of airflow through radial swirl blades according to preset target conditions to generate a blade number determination model; then, determining the number of radial swirl blades based on the blade number determination model. This invention overcomes the difficulty of determining the number of radial swirl blades in the design process of swirl burners by providing a method for determining the optimal number of radial swirl blades in the design process of swirl burners.

[0046] In one embodiment, the target condition includes: the swirl intensity generated when the airflow passes through the radial swirl blades is at its maximum.

[0047] In one embodiment, see Figure 3 Step 100 includes:

[0048] Step 101: Under the target conditions, establish a mapping relationship between the swirl intensity and the number of blades to generate the number determination model.

[0049] The structure of the radial swirl blade is as follows Figure 4 As shown, r is the radius of the circle where the fixed end of the blade is located, mm; φ is the central angle of each blade, °, φ=360° / n, n is the number of swirl blades; b is the length from the fixed end to the movable end of the blade, mm; h is the vertical distance from the fixed end of blade 2 to blade 1, mm; α is the blade angle, that is, the angle between the actual position of the blade and the fully closed position, °, when α=0, the blade is in the fully closed position; when α=90°-φ / 2, the blade is in the fully open position.

[0050] By simulating the swirl intensity generated when airflow passes through radial swirling blades using a computer, and taking the maximum swirl intensity as the standard, the following relationship between the maximum swirl intensity Imax and the number of blades n can be obtained:

[0051] Imax=a0+a1×cos(n×w)+b1×sin(n×w)+a2×cos(2×n×w)+b2×sin(2×n×w)+a3×cos(3×n×w)+b3×sin(3×n× w)+a4×cos(4×n×w)+b4×sin(4×n×w)+a5×cos(5×n×w)+b5×sin(5×n×w)+a6×cos(6×n×w)+b6×sin(6×n×w)

[0052] Where: a0 = -41.6, a1 = 15.95, b1 = 71.04, a2 = 43.07, b2 = -20.54, a3 = -14.35, b3 = -18.01, a4 = -4.822, b4 = 6.122, a5 = 1.511, b5 = 0.6996, a6 = 0.03371, b6 = -0.167, w = 0.02228.

[0053] In one embodiment, see Figure 5 Step 200 includes:

[0054] Step 201: Solve the blade number determination model and determine the number of radial swirl blades in combination with the radial swirl blade parameters.

[0055] Solving the above equation, we can obtain the relationship between the maximum swirl intensity Imax and the number of blades n, as follows: Figure 6 As shown, when the number of radial swirl blades increases to infinity, the corresponding maximum swirl intensity limit is 0.25. To facilitate radial swirl blade designers in determining the number of blades based on the maximum swirl intensity, Table 1 provides the maximum swirl intensity corresponding to blade numbers n ranging from 8 to 50. Based on practical engineering experience, and considering that the maximum swirl intensity should not be less than 0.125, the recommended value for n should not be less than 12. The specific blade values ​​should be flexibly selected according to Table 1, taking into account the ease of equipment processing and assembly.

[0056] Table 1. Relationship between maximum swirl intensity and number of blades (n ranges from 8 to 50)

[0057] Number of leaves / n Maximum swirl intensity Number of leaves / n Maximum swirl intensity 8 0.079 31 0.203 9 0.095 32 0.205 10 0.109 33 0.206 11 0.121 34 0.207 12 0.131 35 0.208 13 0.140 36 0.210 14 0.147 37 0.211 15 0.154 38 0.212 16 0.160 39 0.213 17 0.165 40 0.214 18 0.169 41 0.215 19 0.174 42 0.215 20 0.177 43 0.216 21 0.181 44 0.217 22 0.184 45 0.218 23 0.187 46 0.218 24 0.189 47 0.219 25 0.192 48 0.220 26 0.194 49 0.220 27 0.196 50 0.221 28 0.198 … … 29 0.200 … … 30 0.202 …… 0.25

[0058] As described above, the method for determining the number of radial swirl blades provided in this embodiment of the invention includes: firstly, simulating the rotation process of airflow through radial swirl blades according to preset target conditions to generate a blade number determination model; then, determining the number of radial swirl blades based on the blade number determination model. This invention overcomes the difficulty of determining the number of radial swirl blades in the design process of swirl burners by providing a method for determining the optimal number of radial swirl blades in the design process of swirl burners.

[0059] To further illustrate this solution, the present invention provides a specific application example of the method for determining the number of radial swirl blades, which specifically includes the following content, see below. Figure 7 .

[0060] S1: Under the target conditions, establish a mapping relationship between the swirl intensity and the number of blades to generate the number determination model.

[0061] S2: Solve the model for determining the number of blades, and determine the number of radial swirl blades by combining the radial swirl blade parameters.

[0062] S3: Establish a mapping relationship between the number of radial swirling blades and the swirling intensity.

[0063] As described above, the method and apparatus for determining the number of radial swirl blades provided in this embodiment of the invention include: firstly, simulating the rotation process of airflow through radial swirl blades according to preset target conditions to generate a blade number determination model; then, determining the number of radial swirl blades based on the blade number determination model. This invention can guide designers of radial swirl burners to quickly determine the number of blades based on swirl intensity.

[0064] Based on the same inventive concept, this application also provides a radial swirl blade number determination device, which can be used to implement the method described in the above embodiments, as shown in the following embodiments. Since the principle of the radial swirl blade number determination device in solving the problem is similar to that of the radial swirl blade number determination method, the implementation of the radial swirl blade number determination device can refer to the implementation of the radial swirl blade number determination method, and repeated details will not be elaborated further. As used below, the terms "unit" or "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the system described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0065] The present invention provides a specific implementation of a radial swirl blade number determination device capable of implementing a method for determining the number of radial swirl blades, see [link to relevant documentation]. Figure 8 The device for determining the number of radial swirl blades specifically includes the following components:

[0066] The quantity determination model generation module 10 is used to simulate the airflow rotation process through the radial swirl blades according to preset target conditions, so as to generate a blade quantity determination model.

[0067] The blade number determination module 20 is used to determine the number of radial swirl blades according to the blade number determination model.

[0068] In one embodiment, the target condition includes: the swirl intensity generated when the airflow passes through the radial swirl blades is at its maximum.

[0069] In one embodiment, see Figure 9 The quantity determination model generation module 10 includes:

[0070] The quantity determination model generation unit 101 is used to establish a mapping relationship between the swirl intensity and the number of blades under the target conditions, so as to generate the quantity determination model.

[0071] In one embodiment, see Figure 10 The blade quantity determination module 20 includes:

[0072] The blade number determination unit 201 is used to solve the blade number determination model and determine the number of radial swirl blades in combination with the radial swirl blade parameters.

[0073] As described above, the radial swirl blade number determination device provided in this embodiment of the invention includes: firstly, simulating the airflow rotation process through the radial swirl blades according to preset target conditions to generate a blade number determination model; then, determining the number of radial swirl blades according to the blade number determination model. This invention overcomes the problem that the determination of the number of radial swirl blades lacks specifications or standards in the design of swirl burners, and provides a method for determining the optimal number of radial swirl blades in the design process of swirl burners.

[0074] This application also provides a specific implementation of an electronic device capable of implementing all the steps in the radial swirl blade number determination method described in the above embodiments. See [link to implementation details]. Figure 11 The electronic devices specifically include the following:

[0075] Processor 1201, memory 1202, communications interface 1203, and bus 1204;

[0076] The processor 1201, memory 1202, and communication interface 1203 communicate with each other via bus 1204; the communication interface 1203 is used to realize information transmission between server-side devices, power measurement devices, and user-side devices and other related devices.

[0077] The processor 1201 is used to call the computer program in the memory 1202. When the processor executes the computer program, it implements all the steps in the radial swirl blade number determination method in the above embodiments. For example, when the processor executes the computer program, it implements the following steps:

[0078] Step 100: Based on the preset target conditions, simulate the airflow process as it rotates through the radial swirl blades to generate a model for determining the number of blades;

[0079] Step 200: Determine the number of radial swirl blades based on the blade number determination model.

[0080] Embodiments of this application also provide a computer-readable storage medium capable of implementing all steps of the radial swirl blade number determination method in the above embodiments. The computer-readable storage medium stores a computer program that, when executed by a processor, implements all steps of the radial swirl blade number determination method in the above embodiments. For example, when the processor executes the computer program, it implements the following steps:

[0081] Step 100: Based on the preset target conditions, simulate the airflow process as it rotates through the radial swirl blades to generate a model for determining the number of blades;

[0082] Step 200: Determine the number of radial swirl blades based on the blade number determination model.

[0083] In summary, the computer-readable storage medium provided in this embodiment of the invention enables service providers to adaptively take services offline and online based on the availability of their own software and hardware resources, thereby achieving the self-isolation capability of service providers and ensuring the success rate of service providers' responses to service requests.

[0084] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. In particular, hardware + program embodiments are relatively simple in description because they are fundamentally similar to method embodiments; relevant parts can be referred to the descriptions in the method embodiments.

[0085] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0086] While this application provides method operation steps as shown in the embodiments or flowcharts, more or fewer operation steps may be included based on conventional or non-inventive labor. The order of steps listed in the embodiments is merely one possible execution order among many and does not represent the only execution order. In actual device or client product execution, the method can be executed sequentially as shown in the embodiments or drawings, or in parallel (e.g., in a parallel processor or multi-threaded processing environment).

[0087] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0088] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0089] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0090] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0091] Specific embodiments have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this invention. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A method of determining the number of radial flow vanes, characterized by, The method comprises the following steps: According to the preset target condition, simulate the rotation process of the airflow through the radial rotating flow blade, to generate a blade number determination model; According to the blade number determination model, determine the number of the radial rotating flow blade; The target condition includes: the maximum swirl intensity generated when the airflow passes through the radial rotating flow blade; According to the preset target condition, simulate the rotation process of the airflow through the radial rotating flow blade, to generate a blade number determination model, which comprises: Under the target condition, a mapping relationship between the swirl intensity and the number of blades is established to generate the number determination model, specifically: The swirl intensity generated when the airflow passes through the radial rotating flow blade is simulated, and the maximum swirl intensity Imax and the number of blades n are obtained as follows: Imax= a0 + a1×cos(n×w) + b1×sin(n×w) + a2×cos(2×n×w) + b2×sin(2×n×w) + a3×cos(3×n×w) + b3×sin(3×n×w) + a4×cos(4×n×w) + b4×sin(4×n×w) + a5×cos(5×n×w) + b5×sin(5×n×w) + a6×cos(6×n×w) + b6×sin(6×n×w) Wherein: a0 =-41.6, a1 =15.95, b1 =71.04, a2 =43.07, b2 =-20.54, a3 =-14.35, b3 = -18.01, a4 =-4.822, b4 =6.122, a5 = 1.511, b5 = 0.6996, a6 = 0.03371, b6 = -0.167, w=0.02228.

2. The method of claim 1, wherein, According to the blade number determination model, determine the number of the radial rotating flow blade, which comprises: Solve the blade number determination model, and combine the radial rotating flow blade parameters to determine the number of the radial rotating flow blade.

3. A device for determining the number of radial flow vanes, characterized in that The method comprises the following steps: A number determination model generation module is configured to simulate the rotation process of the airflow through the radial rotating flow blade according to the preset target condition, to generate a blade number determination model; A blade number determination module is configured to determine the number of the radial rotating flow blade according to the blade number determination model; The target condition includes: the maximum swirl intensity generated when the airflow passes through the radial rotating flow blade; The number determination model generation module comprises: A number determination model generation unit is configured to establish a mapping relationship between the swirl intensity and the number of blades under the target condition, to generate the number determination model, specifically: The swirl intensity generated when the airflow passes through the radial rotating flow blade is simulated, and the maximum swirl intensity Imax and the number of blades n are obtained as follows: Imax = a0 + a1 x cos(n x w) + b1 x sin(n x w) + a2 x cos(2 x n x w) + b2 x sin(2 x n x w) + a3 x cos(3 x n x w) + b3 x sin(3 x n x w) + a4 x cos(4 x n x w) + b4 x sin(4 x n x w) + a5 x cos(5 x n x w) + b5 x sin(5 x n x w) + a6 x cos(6 x n x w) + b6 x sin(6 x n x w) wherein: a0 = -41.6, a1 = 15.95, b1 = 71.04, a2 = 43.07, b2 = -20.54, a3 = -14.35, b3 = -18.01, a4 = -4.822, b4 = 6.122, a5 = 1.511, b5 = 0.6996, a6 = 0.03371, b6 = -0.167, w = 0.02228.

4. The device for determining the number of radial swirl vanes according to claim 3, characterized in that The blade number determination module comprises: a blade number determination unit configured to solve the blade number determination model and determine the number of the radial rotating blades in combination with the radial rotating blade parameters.

5. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor implements the steps of the radial rotating blade number determination method of any one of claims 1 to 2 when executing the program.

6. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program implements the steps of the radial rotating blade number determination method of any one of claims 1 to 2 when executed by the processor.

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