A method and system for designing a converter vaporization cooling flue

Abstract

The present application belongs to the technical field of flue vaporization cooling, and specifically provides a converter vaporization cooling flue design method and system, wherein the method specifically comprises: segmenting modeling of the flue, the built flue model comprising a main pipeline and a plurality of shunt branch pipelines in parallel communication with the main pipeline, and each shunt branch pipeline being provided with a resistance element at the inlet and / or outlet thereof; equivalent of the resistance element into a small-hole throttling element, simulation of the flue model, adjustment of the parameters of each small-hole throttling element, so that the temperature difference between the outlets of each shunt branch pipeline is within a preset range, and the best-matched resistance element of each shunt branch pipeline is obtained. The scheme accurately matches the corresponding resistance element according to the heat exchange effect of each pipeline itself, effectively ensures uniform and efficient heat dissipation of all pipelines, perfectly matches the internal heat exchange condition, and maximizes the utilization of the heat energy in the large amount of high-temperature furnace gas released in the production process of steel products.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue vaporization cooling, and more particularly to a converter vaporization cooling flue design method and system. BACKGROUND

[0002] With the continuous development of the steel industry, steel enterprises strive to eliminate backward production capacity, improve product quality, technological innovation, and the steel industry continuously improves the standards of steel, environmental protection and energy consumption, and energy saving and emission reduction has gradually become one of the important focuses of steel development. Under this background, the development of flue gas waste heat utilization technology can greatly transform the heat energy in the large amount of high-temperature furnace gas released in the production process of steel products, and transform and utilize. The vaporization cooling system as one of the technologies for waste heat utilization has been applied in the steel field for many years, but as the energy efficiency and service life requirements continue to improve, the problems existing in the original vaporization cooling system are increasingly prominent, and have become one of the obstacles to its development. The lack of circulating water causes the vaporization cooling system to fail to work, and the main reason for the lack of circulating water is in two points:

[0003] 1. The vaporization cooling system works periodically, and the temperature distribution at different positions in the working process is not uniform;

[0004] 2. Due to the influence of gravity and structure and other factors, the flow distribution of the water flow in the flue of the vaporization cooling system cannot perfectly match the internal heat exchange. SUMMARY

[0005] The present application is directed to the technical problem in the prior art that the flow distribution of the water flow in the flue of the vaporization cooling system cannot uniformly match the internal heat exchange.

[0006] The present application provides a converter vaporization cooling flue design method, comprising the following steps:

[0007] S1, segmenting modeling the flue, the built flue model comprising a main pipe and a plurality of shunt branch pipes connected in parallel to the main pipe, and a resistance element being arranged at the inlet and / or outlet of each shunt branch pipe;

[0008] S2, equivalent the resistance element to a small hole throttling element, simulating the flue model, adjusting the parameters of each small hole throttling element, so that the temperature difference between the outlets of each shunt branch pipe is within a preset range, and obtaining the best matching resistance element for each shunt branch pipe.

[0009] Preferably, the resistance element is one or more of a small hole with a small inlet and a large outlet, a multi-hole throttling orifice plate, and a valve.

[0010] Preferably, the S2 specifically comprises:

[0011] Obtain flow rate information of each shunt branch pipe, and calculate resistance value of the resistance element;

[0012] According to resistance of the resistance element, the resistance element is divided into multiple regions, and each region includes one or more resistance elements with the closest resistance value;

[0013] When adjusting parameters of the small-hole throttling element in the shunt branch pipe, the region is determined first, and then the resistance element with the best effect is selected as the resistance element of the shunt branch pipe in the region.

[0014] Preferably, the S2 specifically includes: regarding the whole flue model as a one-dimensional model, and calculating pressure drops of each shunt branch pipe under the one-dimensional model to obtain the resistance value of each resistance element.

[0015] Preferably, the S1 specifically includes: using the fluent software to perform three-dimensional modeling.

[0016] Preferably, the S2 specifically includes: combining boundary heat exchange conditions for calculation, and then adjusting the size of the small hole in the simulation process, so that the temperature difference between positions of each shunt branch pipe is not large.

[0017] Preferably, the boundary heat exchange condition includes internal stable heat source and gravity effect.

[0018] The application also provides a converter vaporization cooling flue design system, which is used for realizing the converter vaporization cooling flue design method, and includes:

[0019] A modeling module is used for segmentally modeling the flue, and the built flue model includes a main pipe and multiple shunt branch pipes which are parallelly connected to the main pipe, and each shunt branch pipe is respectively provided with a resistance element at an inlet thereof.

[0020] A simulation matching module is used for equivalently converting the resistance element into a small-hole throttling element, simulating the flue model, adjusting parameters of each small-hole throttling element, so that the temperature difference between outlets of each shunt branch pipe is within a preset range, and the best matching resistance element of each shunt branch pipe is obtained.

[0021] The application also provides an electronic device including a memory and a processor, and the processor is used for realizing steps of the converter vaporization cooling flue design method when executing a computer management program stored in the memory.

[0022] The application also provides a computer readable storage medium, and a computer management program is stored on the computer readable storage medium, and the computer management program is used for realizing steps of the converter vaporization cooling flue design method when executed by a processor.

[0023] Beneficial effects: The converter vaporization cooling flue design method and system provided by the application, wherein the method specifically comprises: segment modeling of the flue, the built flue model comprising a main pipeline and a plurality of shunt branch pipelines in parallel communication with the main pipeline, and each shunt branch pipeline being provided with a resistance element at the inlet and / or outlet thereof; equivalent of the resistance element into a small hole throttling element, simulation of the flue model, adjustment of the parameters of each small hole throttling element, so that the temperature difference between the outlets of each shunt branch pipeline is within a preset range, and the best matched resistance element of each shunt branch pipeline is obtained. The scheme accurately matches the corresponding resistance element according to the heat exchange effect of each pipeline itself, effectively ensures uniform and efficient heat dissipation of all pipelines, perfectly matches the internal heat exchange condition, and maximizes the utilization of the heat energy in the large amount of high-temperature furnace gas released in the steel product production process. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A converter vaporization cooling flue design method flowchart is provided for the application.

[0025] Figure 2 A possible hardware structure schematic diagram of an electronic device is provided for the application.

[0026] Figure 3 A possible hardware structure schematic diagram of a computer readable storage medium is provided for the application.

[0027] Fig. 4 is a small hole throttling schematic diagram provided by the application.

[0028] Mark explanation: main pipeline 1, shunt branch pipeline 2. DETAILED DESCRIPTION

[0029] The specific embodiments of the application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the application, but not to limit the scope of the application.

[0030] Figure 1 A converter vaporization cooling flue design method is provided for the application, comprising the following steps:

[0031] S1, segment modeling of the flue, the built flue model comprising a main pipeline 1 and a plurality of shunt branch pipelines 2 in parallel communication with the main pipeline 1, and each shunt branch pipeline 2 being provided with a resistance element at the inlet and / or outlet thereof; modeling of the flue in the vaporization cooling system of the steel industry for heat exchange, the flue for heat exchange comprising a main pipeline 1 and a plurality of shunt branch pipelines 2, each shunt branch pipeline 2 being in parallel with each other and in communication with the main pipeline 1. The flue gas enters from the main pipeline 1 and then flows out from each shunt branch pipeline 2. Figure 1 The shunt branch pipelines 21-n are shown.

[0032] S2, the resistance elements are equivalent to small hole throttling elements, the flue model is simulated, and parameters of each small hole throttling element are adjusted, so that a temperature difference between outlets of each branch pipeline 2 is within a preset range, and each branch pipeline 2 is obtained. The best matching resistance element. The flow rate information of each branch pipeline is obtained by simulating and calculating the initial model, which can be three-dimensional simulation or one-dimensional.

[0033] a. One-dimensional simulation

[0034] The entire flue system is considered as a one-dimensional system, and the element resistance can be calculated according to the conventional one-dimensional calculation, in which the pipeline pressure drop is calculated as:

[0035]

[0036] The resistance coefficient of the general pipeline is:

[0037]

[0038] Value: 0.03-0.031, which can be 0.031, and other parameters can be selected according to the actual situation. The resistance elements can be equivalent to small holes, and the small hole throttling schematic diagram is shown in Figure 4 .

[0039] b. Three-dimensional simulation

[0040] Three-dimensional software such as fluent is used for modeling, and boundary heat exchange conditions (considered as internal stable heat source, and gravity effect is added) are combined for calculation, and then the size of the small hole is adjusted in the simulation process, so that the temperature difference of the outlets of each branch pipeline 2 meets the requirements.

[0041] In the preferred scheme, the resistance elements are one or more of small holes, porous throttling orifice plates, and valves. The resistance elements are added or modified small holes or throttling orifice plates, that is, the content is added at each inlet end. Since there are many kinds of throttling elements, the effective ones at this stage are small holes, throttling orifice plates (porous type), different pipe diameters, valves, detachable orifice plates, and the like.

[0042] In the preferred scheme, S2 specifically includes:

[0043] The flow rate information of each branch pipeline is obtained, and the resistance value of the resistance element is calculated;

[0044] According to the resistance size of the resistance element, a plurality of regions are divided, each region includes one or more resistance elements with the closest resistance value;

[0045] In adjusting the parameters of the small hole throttling element in the branch pipe 2, first determine the area, and then select the best resistance element in the area as the resistance element of the branch pipe 2.

[0046] One area includes a plurality of resistance elements, and the resistance values of the resistance elements in each area are similar. In this way, when adjusting the parameters of the resistance elements, first select an area, and set all the resistance values in the area to the same value, which can be the average value or other value, but ensure that the values of each area are different. Then further select a specific resistance element in the best effect area.

[0047] Industrial design can divide the resistance element results into several areas, and use the same resistance element setting for the relatively close ones to simplify the design difficulty of industrial application. The purpose of this concept is to simplify design and calculation, because too fine small holes actually only have a great effect on scientific research. After zoning, it can have greater application in engineering practice. After considering zoning, the resistance elements in one area can be set to the same, and the same simulation method mentioned earlier can be used to simplify calculation and operation amount. At the same time, considering that the result difference is within 5% (this value can be adjusted), it is considered that it can be used.

[0048] The zoning example can divide it into 8 areas according to the calculation results and the closeness of the resistance, and number the pipes to better match. Fine design can fine design each heated pipe, number each heated pipe, and number the resistance elements for corresponding design. In this way, the branch pipe 2 can maximize the utilization rate of heat exchange and have higher matching degree.

[0049] The preferred scheme, the S2 specifically includes: combining the boundary heat exchange condition for calculation, and then adjusting the size of the small hole in the simulation process, so that the temperature difference between the outlets of each branch pipe 2 is within a predetermined range. The boundary heat exchange condition includes internal stable heat source and added gravity effect. Use three-dimensional software such as fluent to model, and combine the boundary heat exchange condition (considered as internal stable heat source, added gravity effect) to calculate, and then adjust the size of the small hole in the simulation process, so that the temperature difference between the positions of each branch pipe is within a predetermined range.

[0050] Please refer to Figure 2 The embodiment of the electronic device provided by the embodiment of the present application is shown in the figure. As shown in Figure 2As shown in the figure, the embodiment of the present application provides an electronic device, which comprises a memory 1310, a processor 1320, and a computer program 1311 stored in the memory 1310 and capable of running on the processor 1320, and the processor 1320 implements the following steps when executing the computer program 1311: S1, segmentally modeling a flue, and the built flue model comprises a main pipeline and a plurality of branch pipelines in parallel communication with the main pipeline, and a resistance element is arranged at the inlet of each branch pipeline;

[0051] S2, equivalent of the resistance element to a small-hole throttling element, simulation of the flue model, adjustment of the parameters of each small-hole throttling element, so that the temperature difference between the outlets of each branch pipeline is within a preset range, and the resistance element best matched with each branch pipeline is obtained.

[0052] Please refer to Figure 3 An embodiment of a computer readable storage medium provided by the present application is shown in the figure. As Figure 3 As shown in the figure, the embodiment provides a computer readable storage medium 1400, which stores a computer program 1411, and the computer program 1411 implements the following steps when executed by a processor: S1, segmentally modeling a flue, and the built flue model comprises a main pipeline and a plurality of branch pipelines in parallel communication with the main pipeline, and a resistance element is arranged at the inlet of each branch pipeline;

[0053] S2, equivalent of the resistance element to a small-hole throttling element, simulation of the flue model, adjustment of the parameters of each small-hole throttling element, so that the temperature difference between the outlets of each branch pipeline is within a preset range, and the resistance element best matched with each branch pipeline is obtained.

[0054] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in an embodiment can be referred to the related description of other embodiments.

[0055] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can adopt a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program codes.

[0056] The present application is described in reference to the flowchart and / or block diagrams of the methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart and / or block diagrams, and combinations of blocks in the flowchart 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 computer, 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, create means for implementing the functions specified in the flowchart and / or block diagram block or blocks. Figure 1 The flowchart and / or block diagrams can also be implemented by computer readable instructions residing on a computer readable medium, such as a floppy disk, a compact disc, a compact disc read only memory (CD-ROM), and RAM. In some embodiments, the computer readable instructions can also reside on usab!e media such as RAM, magnetic or optical cards, optical storage devices, and the like. Further, it is understood that the Figure 1 The flowchart and / or block diagrams can also be implemented by computer readable instructions residing on a computer readable medium, such as a floppy disk, a compact disc, a compact disc read only memory (CD-ROM), and RAM. In some embodiments, the computer readable instructions can also reside on usab!e media such as RAM, magnetic or optical cards, optical storage devices, and the like. Further, it is understood that the

[0057] The computer readable instructions can also be loaded onto a computer or other programmable instruction execution device to cause a series of operational steps to be performed on the computer or other programmable instructions execution device to produce a computer implemented process such that the instructions which execute on the computer or other programmable instructions execution device provide steps for implementing the functions specified in the flowchart and / or block diagram block or blocks. Figure 1 The flowchart and / or block diagrams can also be implemented by computer readable instructions residing on a computer readable medium, such as a floppy disk, a compact disc, a compact disc read only memory (CD-ROM), and RAM. In some embodiments, the computer readable instructions can also reside on usab!e media such as RAM, magnetic or optical cards, optical storage devices, and the like. Further, it is understood that the Figure 1 The flowchart and / or block diagrams can also be implemented by computer readable instructions residing on a computer readable medium, such as a floppy disk, a compact disc, a compact disc read only memory (CD-ROM), and RAM. In some embodiments, the computer readable instructions can also reside on usab!e media such as RAM, magnetic or optical cards, optical storage devices, and the like. Further, it is understood that the

[0058] The computer readable instructions can also be loaded onto a computer or other programmable instruction execution device to cause a series of operational steps to be performed on the computer or other programmable instructions execution device to produce a computer implemented process such that the instructions which execute on the computer or other programmable instructions execution device provide steps for implementing the functions specified in the flowchart and / or block diagram block or blocks. Figure 1 The flowchart and / or block diagrams can also be implemented by computer readable instructions residing on a computer readable medium, such as a floppy disk, a compact disc, a compact disc read only memory (CD-ROM), and RAM. In some embodiments, the computer readable instructions can also reside on usab!e media such as RAM, magnetic or optical cards, optical storage devices, and the like. Further, it is understood that the Figure 1 The flowchart and / or block diagrams can also be implemented by computer readable instructions residing on a computer readable medium, such as a floppy disk, a compact disc, a compact disc read only memory (CD-ROM), and RAM. In some embodiments, the computer readable instructions can also reside on usab!e media such as RAM, magnetic or optical cards, optical storage devices, and the like. Further, it is understood that the

[0059] Although preferred embodiments of the application have been described herein, additional modifications and alterations of the embodiments will occur to others upon reading the preceding description. Therefore, it is the intent of the appended claims to cover all such modifications and alterations as fall within the true spirit and scope of the application. Further, it is to be appreciated that the application is not limited to the specific embodiments described herein, but rather includes any and all alternatives falling within the scope of the appended claims.

[0060] It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover the modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

Claims

1. A design method for a converter vaporization cooling flue, characterized in that, Includes the following steps: S1, segment the flue and model it. The constructed flue model includes a main pipe and multiple branch pipes connected in parallel to the main pipe. Each branch pipe is provided with a resistance element at its inlet and / or outlet. S2, the resistance element is equivalent to a small-hole throttling element, the flue model is simulated, and the parameters of each small-hole throttling element are adjusted so that the temperature difference between the outlets of each branch pipe is within a preset range, so as to obtain the best-matched resistance element for each branch pipe. S2 specifically includes: Obtain the flow velocity and flow rate information for each branch pipe, and calculate the resistance value of the resistance element; The resistance elements are divided into multiple regions based on their resistance values, and each region includes multiple resistance elements with similar resistance values. When adjusting the parameters of the orifice throttling element in the branch pipe, first determine the area, and then compare and select the resistance element with the best effect in the area as the resistance element of the branch pipe. Specifically, first select a region and set all resistance values ​​within that region to the same value, which is the average value, but ensure that the value is different for each region. Then, further refine the selection of a specific resistance element within the region with the best effect, so that the temperature difference between the outlets of each branch pipe is within 5%.

2. The converter vaporization cooling flue design method according to claim 1, characterized in that, The resistance element is one or more of the following: a small orifice with a small inlet and a large outlet, a porous orifice plate, and a valve.

3. The converter vaporization cooling flue design method according to claim 1, characterized in that, S2 specifically includes: treating the entire flue model as a one-dimensional model, calculating the pressure drop of each branch pipe under the one-dimensional model, so as to obtain the resistance value of each resistance element.

4. The converter vaporization cooling flue design method according to claim 1, characterized in that, S1 specifically includes: using Fluent software to perform three-dimensional modeling.

5. The converter vaporization cooling flue design method according to claim 4, characterized in that, S2 specifically includes: performing calculations based on boundary heat transfer conditions, and then adjusting the orifice size during the simulation process to ensure that the temperature difference between the locations of each branch pipe is within a preset range.

6. The converter vaporization cooling flue design method according to claim 5, characterized in that, The boundary heat transfer conditions include an internal stable heat source and the influence of gravity.

7. A converter vaporization cooling flue design system, characterized in that, The system is used to implement the converter vaporization cooling flue design method as described in any one of claims 1-6, including: The modeling module is used to segment and model the flue. The constructed flue model includes a main pipe and multiple branch pipes connected in parallel to the main pipe, and each branch pipe is provided with a resistance element at its inlet and / or outlet. The simulation matching module is used to convert the resistance element into an orifice throttling element, simulate the flue model, and adjust the parameters of each orifice throttling element so that the temperature difference between the outlets of each branch pipe is within a preset range, thereby obtaining the optimally matched resistance element for each branch pipe.

8. An electronic device, characterized in that, It includes a memory and a processor, wherein the processor is used to execute computer management programs stored in the memory to implement the steps of the converter vaporization cooling flue design method as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, It stores a computer management program, which, when executed by a processor, implements the steps of the converter vaporization cooling flue design method as described in any one of claims 1-6.

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