Arrangement method and system of multi-angle jet fire ignition device for natural gas pipeline

Abstract

The present invention provides a method and system for arranging a multi-angle jet fire ignition device for a natural gas pipeline, comprising: taking the minimum monitoring unit of the natural gas pipeline as a target, constructing a natural gas pipeline leakage simulation model based on target leakage scenario information, and determining a potential ignition area corresponding to the target leakage scenario and concentration field information within a preset time period; determining a target time and a corresponding target area within a preset time period corresponding to the target leakage scenario based on the concentration field information within the preset time period corresponding to the target leakage scenario; determining a target ignition area corresponding to the target time based on the potential ignition area corresponding to the target leakage scenario and the target area corresponding to the target time; and controlling a jet fire ignition device in a pre-built natural gas pipeline leakage explosion test device to move to a target position and perform an explosion test based on the target ignition area corresponding to the target time, so as to comprehensively and accurately test the jet flame combustion characteristics caused by the leakage of the natural gas pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas pipeline testing, and in particular to a method and system for arranging a multi-angle jet fire ignition device for a natural gas pipeline. Background Art

[0002] High-pressure, long-distance natural gas pipelines are one of the key energy solutions to promote economic development. However, during operation, natural gas pipelines may leak due to material defects, human damage or corrosion. If the leaked gas ignites at the cracks, it will cause jet flames, causing significant casualties and property losses.

[0003] At present, the research on the combustion characteristics of jet flames caused by high-pressure natural gas pipeline leakage in my country mainly relies on theoretical modeling and simulation analysis to calculate and evaluate the geometric characteristics and thermal radiation hazard area of ​​jet flames, which cannot accurately reflect the combustion characteristics of jet flames caused by natural gas pipeline leakage. Even if there are a small number of high-pressure natural gas pipeline leakage experimental systems, due to the simple pipeline design and the fact that most of them are ignited and burned at the leakage port of the gas supply pipeline, there are differences from the actual situation of jet flames caused by natural gas pipeline leakage. Therefore, it is impossible to fully and accurately reflect the combustion characteristics of jet flames caused by natural gas pipeline leakage, and thus it is impossible to provide theoretical and data support for the improvement of safety standards for natural gas transmission, storage and transportation technology. Summary of the invention

[0004] The present invention provides a method and system for arranging a multi-angle jet fire ignition device for a natural gas pipeline, which is used to solve the problem that it is difficult to fully and accurately determine the jet flame combustion characteristics caused by natural gas pipeline leakage in the prior art.

[0005] In one aspect, the present invention provides a method for arranging a multi-angle jet fire ignition device for a natural gas pipeline, comprising:

[0006] Taking the minimum monitoring unit of the natural gas pipeline as the target, a natural gas pipeline leakage simulation model is constructed based on the target leakage scenario information, and based on the natural gas pipeline leakage simulation model, the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period are determined;

[0007] Determine a target time within a preset period corresponding to the minimum monitoring unit target leakage scenario and a target area corresponding to the target time based on concentration field information at different times within a preset period corresponding to the minimum monitoring unit target leakage scenario;

[0008] Determining a target ignition area corresponding to the target time based on a potential ignition area corresponding to the minimum monitoring unit target leakage scenario and a target area corresponding to the target time;

[0009] Based on the target ignition area corresponding to the target moment, the test tasks corresponding to each target moment are generated, and based on the test tasks corresponding to each target moment, the jet fire ignition device in the pre-built natural gas pipeline leakage and explosion experimental device is controlled to move to the target position and perform an explosion test until all the test tasks corresponding to each target moment are completed.

[0010] In an optional embodiment of the present application, the target leakage scene information is composed of a combination of natural gas pipeline sub-scene information and environmental sub-scene information, wherein the natural gas pipeline sub-scene information includes the length, diameter, material, wall thickness, pipeline pressure and flow of the minimum monitoring unit, and the number, shape, size and angle of the leakage ports; the environmental sub-scene information includes obstacle information, wind speed, wind direction and temperature information within a preset range around the minimum monitoring unit, and the obstacles include terrain and buildings.

[0011] In an optional embodiment of the present application, determining the potential ignition area corresponding to the minimum monitoring unit target leakage scenario based on the natural gas pipeline leakage simulation model specifically includes:

[0012] Determine the target obstacle corresponding to the target leakage scenario of the minimum monitoring unit based on the natural gas pipeline leakage simulation model; the target obstacle is an obstacle with an ignition source within a preset range around the minimum monitoring unit;

[0013] Based on the structural information of the target obstacle corresponding to the minimum monitoring unit target leakage scenario, a potential ignition area corresponding to the minimum monitoring unit target leakage scenario is determined.

[0014] In an optional embodiment of the present application, the preset time period is a time period when there is a risk of combustion and explosion, and the target moment is a moment when there is an area in the corresponding concentration field where the concentration value is within the preset explosion limit range; the target area corresponding to the target moment is an area in the concentration field corresponding to the target moment where the concentration value is within the preset explosion limit range.

[0015] In an optional embodiment of the present application, determining the target ignition area corresponding to the target time based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time specifically includes:

[0016] Based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time, determining an overlapping area between the potential ignition area and the target area;

[0017] The overlapping area between the potential ignition area and the target area is used as the target ignition area corresponding to the target time.

[0018] In an optional embodiment of the present application, each test task corresponding to each target time includes a plurality of test subtasks arranged in time sequence, and each test subtask includes position indication information of the jet fire ignition device;

[0019] Correspondingly, the test tasks corresponding to each target time are used to control the jet fire ignition device in the pre-built natural gas pipeline leakage explosion test device to move to the target position and perform the explosion test until all the test tasks corresponding to each target time are completed, specifically including:

[0020] Step S1, based on the order of multiple test subtasks in the test task corresponding to the current target moment, sequentially send execution instructions of the test subtasks to be executed to the pre-built natural gas pipeline leakage and explosion experimental device, so as to control the jet fire ignition device in the pre-built natural gas pipeline leakage and explosion experimental device to move to the target position corresponding to the test subtask to be executed and perform the explosion test;

[0021] Step S2, determine whether the test task corresponding to the current target time has been completed, if so, execute step S3, otherwise jump to execute step S1;

[0022] Step S3, determining whether all test tasks corresponding to each target time have been executed, if so, executing step S4, otherwise executing the test task corresponding to the next target time and jumping to step S1;

[0023] Step S4, outputting target leakage scenario test completion indication information.

[0024] In an optional embodiment of the present application, the jet fire ignition device in the pre-built natural gas pipeline leakage and explosion experimental device is detachably arranged on the three-dimensional moving mechanism.

[0025] In a second aspect, the present invention also provides a natural gas pipeline multi-angle jet fire ignition device arrangement system, comprising:

[0026] A potential ignition area and concentration field information determination module is used to build a natural gas pipeline leakage simulation model based on the target leakage scenario information with the minimum monitoring unit of the natural gas pipeline as the target, and determine the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period based on the natural gas pipeline leakage simulation model;

[0027] A target area determination module, configured to determine a target time in a preset period corresponding to the minimum monitoring unit target leakage scenario and a target area corresponding to the target time based on concentration field information at different times in a preset period corresponding to the minimum monitoring unit target leakage scenario;

[0028] A target ignition area determination module, used to determine the target ignition area corresponding to the target time based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time;

[0029] The ignition device arrangement module is used to generate test tasks corresponding to each target moment based on the target ignition area corresponding to the target moment, and control the jet fire ignition device in the pre-built natural gas pipeline leakage explosion experimental device to move to the target position and perform explosion test based on the test tasks corresponding to each target moment until all the test tasks corresponding to each target moment are completed.

[0030] In a third aspect, the present invention further provides an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for arranging a multi-angle jet fire ignition device for a natural gas pipeline as described above is implemented.

[0031] In a fourth aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for arranging a multi-angle jet fire ignition device for a natural gas pipeline as described above.

[0032] The present invention provides a method and system for arranging a multi-angle jet fire ignition device for a natural gas pipeline. The method and system take the minimum monitoring unit of the natural gas pipeline as the target, construct a natural gas pipeline leakage simulation model based on the target leakage scenario information, and determine the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period based on the natural gas pipeline leakage simulation model; determine the target time within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target time based on the concentration field information at different times within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit; determine the target ignition area corresponding to the target time based on the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target time; generate test tasks corresponding to each target time based on the target ignition area corresponding to the target time, and control the jet fire ignition device in the pre-built natural gas pipeline leakage explosion test device to move to the target position and perform explosion test based on the test tasks corresponding to each target time until all the test tasks corresponding to each target time are executed. The method can comprehensively and accurately perform automatic testing on the combustion characteristics of the jet flame caused by the leakage of the natural gas pipeline, and provide theoretical and data support for the improvement of the safety standards of natural gas transportation and storage and transportation technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of a flow chart of a method for arranging a multi-angle jet fire ignition device for a natural gas pipeline provided by the present invention;

[0035] Figure 2 A schematic diagram of a flow chart for determining a potential ignition area provided by the present invention;

[0036] Figure 3 A schematic diagram of a process for determining a target ignition area provided by the present invention;

[0037] Figure 4 A schematic diagram of the arrangement flow of the jet fire ignition device provided by the present invention;

[0038] Figure 5 A structural block diagram of a natural gas pipeline multi-angle jet fire ignition device arrangement system provided by the present invention;

[0039] Figure 6 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The following is a description of the specific implementation process of the method and system for arranging the multi-angle jet fire ignition device for a natural gas pipeline in an embodiment of the present invention.

[0042] Figure 1 A flow chart of a method for arranging a multi-angle jet ignition device for a natural gas pipeline provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the method includes:

[0043] Step 101, taking the minimum monitoring unit of the natural gas pipeline as the target, constructing a natural gas pipeline leakage simulation model based on the target leakage scenario information, and determining the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period based on the natural gas pipeline leakage simulation model.

[0044] Specifically, the minimum monitoring unit of the natural gas pipeline is a fixed length of pipeline, usually about 10 meters. Since the natural gas pipeline safety monitoring system in actual application also performs safety monitoring based on the minimum monitoring unit, the embodiment of the present application is based on the minimum monitoring unit of the natural gas pipeline for simulation and actual measurement, which can ensure the accuracy and comprehensiveness of the test results finally obtained on the basis of minimizing the workload of simulation and actual measurement. Based on the above content, it can be seen that the existing technology mainly relies on theoretical modeling and simulation analysis to calculate and evaluate the geometric characteristics and thermal radiation hazard area of ​​the jet flame, and cannot accurately reflect the combustion characteristics of the jet flame caused by the leakage of the natural gas pipeline. Even if there are a small number of high-pressure natural gas pipeline leakage experimental systems, due to the simple pipeline design, most of them are ignited and burned at the leakage port of the gas supply pipeline, which is different from the situation where the real natural gas pipeline leakage causes the jet flame. Therefore, it is impossible to fully and accurately reflect the combustion characteristics of the jet flame caused by the leakage of the natural gas pipeline, and thus it is impossible to provide theoretical and data support for the improvement of the safety standards of natural gas transportation and storage technology. To address this problem, the method for arranging a multi-angle jet fire ignition device for a natural gas pipeline proposed in an embodiment of the present application obtains concentration field data through numerical simulation, and determines the arrangement of the ignition device in the actual measurement process based on the concentration field data. This method can accurately determine the ignition position of the natural gas pipeline jet fire experiment, and provide a basis for determining the ignition position plan for the open space jet fire, thereby maximally restoring the real scene and ensuring the accuracy and comprehensiveness of the combustion characteristics of the jet flame obtained in the test.

[0045] More specifically, the embodiment of the present application first targets the minimum monitoring unit of the natural gas pipeline and constructs a natural gas pipeline leakage simulation model based on the target leakage scenario information. It is worth noting that the target leakage scenario information is composed of the natural gas pipeline sub-scenario information and the environmental sub-scenario information. The natural gas pipeline sub-scenario information includes the length, diameter, material, wall thickness, pipeline pressure and flow of the minimum monitoring unit, the number, shape, size and angle of the leakage port; the environmental sub-scenario information includes the obstacle information, wind speed, wind direction and temperature information within the preset range around the minimum monitoring unit, and the obstacles include terrain and buildings. Based on this, it is possible to maximize the matching degree between the constructed natural gas pipeline leakage simulation model and the actual situation, ensure the accuracy of the simulation results, and then ensure the accuracy of the setting position of the jet fire ignition device in the subsequent natural gas pipeline leakage explosion experimental device.

[0046] Through research, the embodiment of the present application found that natural gas pipelines located in sparsely populated areas such as the wild do not have explosion conditions, so in reality, explosion incidents caused by natural gas leakage rarely occur in the above-mentioned areas. Based on this, the research object of the method for arranging the multi-angle jet fire ignition device of the natural gas pipeline in the embodiment of the present application focuses on the natural gas pipeline in the city, and the natural gas pipeline in the city is basically set underground. Therefore, in the construction of the natural gas pipeline leakage simulation model in the embodiment of the present application, the natural gas pipeline sub-scene information and the environmental sub-scene information are comprehensively considered to restore the real scene to the maximum extent. The environmental sub-scene information includes obstacle information, wind speed, wind direction and temperature information within the preset range around the minimum monitoring unit, and the obstacles include terrain and buildings. Among them, the preset range is the maximum impact range of the natural gas leakage explosion accident in the minimum monitoring unit, which can be obtained by analyzing the historical explosion accident information, and the embodiment of the present application is not specifically limited here. The obstacle information includes detailed information such as the structure and composition of the obstacle. For example, when the obstacle is terrain, the obstacle information includes information such as soil composition, temperature and humidity, and when the obstacle is a building, the obstacle information includes information such as the specific structure inside and outside the building and the purpose of the building. Based on this, the embodiment of the present application can determine the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period based on the natural gas pipeline leakage simulation model.

[0047] Figure 2 A schematic diagram of a flow chart for determining a potential ignition area provided by the present invention, such as Figure 2 As shown, the determining of the potential ignition area corresponding to the minimum monitoring unit target leakage scenario based on the natural gas pipeline leakage simulation model specifically includes:

[0048] Step 1011, determining a target obstacle corresponding to the target leakage scenario of the minimum monitoring unit based on the natural gas pipeline leakage simulation model; the target obstacle is an obstacle with an ignition source within a preset range around the minimum monitoring unit;

[0049] Step 1012: determining a potential ignition area corresponding to the minimum monitoring unit target leakage scenario based on the structural information of the target obstacle corresponding to the minimum monitoring unit target leakage scenario.

[0050] Specifically, based on the foregoing content, it can be known that when the obstacle is an above-ground building or an underground building, for an above-ground building, there may be ignition sources such as power equipment, firepower equipment or artificial fire in the building; for an underground building, there may also be ignition sources such as power cables. When a natural gas leaks, an explosion accident will only occur when there is an ignition source. Therefore, the embodiment of the present application first determines the target obstacle corresponding to the target leakage scenario of the minimum monitoring unit based on the natural gas pipeline leakage simulation model, and then determines the potential ignition area (i.e., the area where the fire source may be generated) corresponding to the target leakage scenario of the minimum monitoring unit based on the structural information of the target obstacle corresponding to the target leakage scenario of the minimum monitoring unit (including the specific structure inside and outside the building). Based on this, the scope of the ignition area in the subsequent actual measurement process can be quickly narrowed, meaningless testing work can be avoided, and testing efficiency can be improved.

[0051] Furthermore, the embodiment of the present application also determines the concentration field information at different times within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit based on the natural gas pipeline leakage simulation model. The preset time period is a time period when there is a risk of explosion. Through research, the present application found that after a natural gas leak occurs, the corresponding leaked gas will successively undergo a gas cloud expansion stage, a gas cloud morphology stabilization stage, and a gas cloud dissipation stage. When the concentration of the leaked gas increases or decreases to a certain level, an explosion accident will not occur. Based on this, by analyzing the monitoring accidents corresponding to historical natural gas leakage accidents, the time period in which an explosion accident may occur can be determined. Based on this, it is only necessary to determine the concentration field information at different times within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit for subsequent actual measurement, which can minimize the workload of numerical simulation. As for the process of performing numerical simulation based on the natural gas pipeline leakage simulation model to determine the concentration field information, it can be implemented using existing fluid dynamics software, and the embodiment of the present application will not be described in detail here.

[0052] Step 102 : determining a target time in a preset period corresponding to the minimum monitoring unit target leakage scenario and a target area corresponding to the target time based on concentration field information at different times in a preset period corresponding to the minimum monitoring unit target leakage scenario.

[0053] Specifically, the preset time period is a time period in which there is a risk of explosion, and the target moment is a moment in which there is an area in the corresponding concentration field where the concentration value is within the preset explosion limit range; the target area corresponding to the target moment is an area in the concentration field corresponding to the target moment where the concentration value is within the preset explosion limit range. It can be understood that since the concentration of leaked gas in different areas of the concentration field is not the same, explosion may not occur in the entire concentration field area. Only when the concentration value is within the preset explosion limit range and encounters an ignition source will explosion occur. Based on this, after determining the concentration field information at different times within the preset time period corresponding to the target leakage scene of the minimum monitoring unit, the embodiment of the present application further determines the target moment within the preset time period and the target area corresponding to the target moment. Based on this, the ignition time node (i.e., the target moment) corresponding to the subsequent actual measurement process and the area (i.e., the target area) where explosion may occur can be quickly and accurately determined.

[0054] Step 103 : determining the target ignition area corresponding to the target time based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time.

[0055] Specifically, based on the above content, it is worth noting that the target area is not the ignition area in the actual measurement process, because in reality, the ignition source is not necessarily in the target area, and in this case, no explosion accident will occur. Based on this, the embodiment of the present application further determines the target ignition area corresponding to the target moment based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target moment. Figure 3 The schematic diagram of the process flow for determining the target ignition area provided by the present invention is as follows: Figure 3 As shown, the determining of the target ignition area corresponding to the target time based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time specifically includes:

[0056] Step 1031, based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time, determining the overlapping area between the potential ignition area and the target area;

[0057] Step 1032: Using the overlapping area between the potential ignition area and the target area as the target ignition area corresponding to the target time.

[0058] Based on the above content, it can be understood that only in the overlapping area of ​​the potential ignition area and the target area, the conditions of the existence of the ignition source and the concentration value being within the preset explosion limit are satisfied at the same time. Based on this, the embodiment of the present application uses the overlapping area of ​​the potential ignition area and the target area as the target ignition area corresponding to the target moment. That is, the target ignition area in the actual measurement process is accurately determined, and invalid tests are avoided to the greatest extent, thereby improving the efficiency of subsequent actual measurements and the accuracy of the actual measurement results.

[0059] Step 104, based on the target ignition area corresponding to the target moment, a test task corresponding to each target moment is generated, and based on the test task corresponding to each target moment, a jet fire ignition device in a pre-built natural gas pipeline leakage explosion experimental device is controlled to move to the target position and perform an explosion test until all the test tasks corresponding to each target moment are completed.

[0060] Specifically, it can be understood that the target moments are usually multiple, and each target moment corresponds to a target ignition area. Therefore, the embodiment of the present application needs to complete all the measured tasks corresponding to the target leakage scene, that is, it is necessary to perform the test tasks corresponding to all the target moments. Based on this, the embodiment of the present application generates the test tasks corresponding to each target moment based on the target ignition area corresponding to the target moment. The test tasks corresponding to each target moment include multiple test subtasks arranged in time sequence, and each test subtask includes the position indication information of the jet fire ignition device. The position of the jet fire ignition device corresponding to each test subtask is the position in the target ignition area. It is worth noting that each test subtask also includes the pipeline pressure and flow corresponding to the target leakage scene, and the indication information of the number, shape, size and angle of the leakage port. The natural gas pipeline leakage explosion experimental device is also built based on the target leakage scene information, in which the minimum monitoring unit is a physical object, and the obstacles in the environmental subscene are built by physical objects or molds. For example, the terrain uses real soil, and the building is restored by a mold. The wind speed, wind direction and temperature in the environmental subscene can be restored by corresponding simulation devices (such as blasting devices and temperature control devices). Based on this, it can be ensured that the natural gas pipeline leakage and explosion experimental device matches the actual situation to the maximum extent. The gas source tank is used to supply gas to the minimum monitoring unit, and the output end of the gas source tank is connected to the driving pump, the buffer tank and one end of the minimum monitoring unit in turn through a pipeline, and the other end of the minimum monitoring unit is also connected to the gas source tank through a pipeline. Based on this, by controlling the gas supply of the gas source tank, the buffer volume of the buffer tank, and controlling the circulation of natural gas through the driving pump, the pipeline pressure and flow corresponding to the target leakage scenario can be obtained. At the same time, by simulating the leakage port through multiple leakage branches connected to the minimum monitoring unit, the number, shape, size and angle of the leakage port can be simulated by opening and closing different leakage branches. Based on this, the embodiment of the present application can control the pre-built natural gas pipeline leakage and explosion experimental device to perform an explosion test.

[0061] More specifically, Figure 4 The schematic diagram of the arrangement flow of the jet fire ignition device provided by the present invention is as follows: Figure 4 As shown, the test tasks corresponding to each target time are used to control the jet fire ignition device in the pre-built natural gas pipeline leakage explosion test device to move to the target position and perform the explosion test until all the test tasks corresponding to each target time are completed, specifically including:

[0062] Step S1, based on the order of multiple test subtasks in the test task corresponding to the current target moment, sequentially send execution instructions of the test subtasks to be executed to the pre-built natural gas pipeline leakage and explosion experimental device, so as to control the jet fire ignition device in the pre-built natural gas pipeline leakage and explosion experimental device to move to the target position corresponding to the test subtask to be executed and perform the explosion test;

[0063] Step S2, determine whether the test task corresponding to the current target time has been completed, if so, execute step S3, otherwise jump to execute step S1;

[0064] Step S3, determining whether all test tasks corresponding to each target time have been completed, if so, executing step S4, otherwise executing the test task corresponding to the next target time and jumping to step S1;

[0065] Step S4, outputting target leakage scenario test completion indication information.

[0066] Based on this, the embodiment of the present application can realize the automated test of the target leakage scenario. It is worth noting that the jet fire ignition device in the pre-built natural gas pipeline leakage explosion test device is detachably arranged on the three-dimensional mobile mechanism. Based on this, after the embodiment of the present application sends the execution instruction of the test subtask to be executed to the pre-built natural gas pipeline leakage explosion test device, the natural gas pipeline leakage explosion test device can control the jet fire ignition device to automatically move to the target position through the three-dimensional mobile mechanism based on the position indication information of the jet fire ignition device. Based on this, the workload of adjusting the position of the jet fire ignition device is greatly reduced, and the test efficiency is improved. It should also be noted that the natural gas pipeline leakage explosion test device also includes a thermal radiation sensor to obtain the thermal radiation distribution of the jet flame during the actual measurement. It can be understood that for different target moments, the corresponding concentration field range is different, and the thermal radiation sensor needs to be set outside the concentration field range to avoid being affected by flames and thermal radiation during the explosion measurement process. In consideration of ensuring the safety of the thermal radiation sensor and the accuracy of the detection results, the embodiment of the present application preferably sets the thermal radiation sensor on the boundary of the corresponding concentration field during the explosion test at different target moments. The thermal radiation sensor can also use the three-dimensional moving mechanism adopted by the jet fire ignition device to realize automatic adjustment of the measurement position (specifically, it can be achieved by adding position indication information of the thermal radiation sensor in each test subtask and sending execution instructions of the test subtask to be executed to the natural gas pipeline leakage and explosion experimental device).

[0067] In summary, the method for arranging a multi-angle jet fire ignition device for a natural gas pipeline based on the embodiment of the present application can comprehensively and accurately automatically test the combustion characteristics of the jet flame caused by a natural gas pipeline leakage.

[0068] The solution provided by the present invention takes the minimum monitoring unit of the natural gas pipeline as the target, constructs a natural gas pipeline leakage simulation model based on the target leakage scenario information, and determines the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period based on the natural gas pipeline leakage simulation model; determines the target time within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target time based on the concentration field information at different times within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit; determines the target time within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target time based on the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target time. a target ignition area corresponding to a target moment; based on the target ignition area corresponding to the target moment, a test task corresponding to each target moment is generated; based on the test task corresponding to each target moment, a jet fire ignition device in a pre-built natural gas pipeline leakage and explosion experimental device is controlled to move to the target position and perform an explosion test, until all the test tasks corresponding to each target moment are completed. This can accurately determine the ignition position of the natural gas pipeline jet fire experiment, provide a basis for determining the open space jet fire ignition position plan, and then comprehensively and accurately perform automatic testing on the combustion characteristics of the jet flame caused by the natural gas pipeline leakage, and provide theoretical and data support for the improvement of the safety standards of natural gas transmission, storage and transportation technology.

[0069] Figure 5 The present invention provides a structural block diagram of a natural gas pipeline multi-angle jet ignition device arrangement system, such as Figure 5 As shown, the system includes:

[0070] The potential ignition area and concentration field information determination module 201 is used to build a natural gas pipeline leakage simulation model based on the target leakage scenario information with the minimum monitoring unit of the natural gas pipeline as the target, and determine the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period based on the natural gas pipeline leakage simulation model;

[0071] The target area determination module 202 is used to determine the target time within the preset period corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time based on the concentration field information at different times within the preset period corresponding to the minimum monitoring unit target leakage scenario;

[0072] A target ignition region determination module 203 is used to determine the target ignition region corresponding to the target moment based on the potential ignition region corresponding to the minimum monitoring unit target leakage scenario and the target region corresponding to the target moment;

[0073] The ignition device arrangement module 204 is used to generate test tasks corresponding to each target moment based on the target ignition area corresponding to the target moment, and control the jet fire ignition device in the pre-built natural gas pipeline leakage explosion experimental device to move to the target position and perform explosion test based on the test tasks corresponding to each target moment, until all the test tasks corresponding to each target moment are completed.

[0074] The solution provided by the present invention is to take the minimum monitoring unit of the natural gas pipeline as the target through the potential ignition area and concentration field information determination module 201, build a natural gas pipeline leakage simulation model based on the target leakage scenario information, and determine the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period based on the natural gas pipeline leakage simulation model; the target area determination module 202 determines the target time within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target time based on the concentration field information at different times within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit; the target ignition area determination module 203 ... target leakage scenario information at different times within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit. The target ignition area corresponding to the target leakage scenario of the small monitoring unit and the target area corresponding to the target moment are determined; the ignition device arrangement module 204 generates the test tasks corresponding to each target moment based on the target ignition area corresponding to the target moment, and controls the jet fire ignition device in the pre-built natural gas pipeline leakage explosion experimental device to move to the target position and perform explosion tests based on the test tasks corresponding to each target moment, until all the test tasks corresponding to each target moment are completed, which can automatically test the combustion characteristics of the jet flame caused by the leakage of the natural gas pipeline in a comprehensive and accurate manner, and provide theoretical and data support for the improvement of the safety standards of natural gas transmission, storage and transportation technology.

[0075] In an optional embodiment of the present application, the target leakage scene information is composed of a combination of natural gas pipeline sub-scene information and environmental sub-scene information, wherein the natural gas pipeline sub-scene information includes the length, diameter, material, wall thickness, pipeline pressure and flow of the minimum monitoring unit, and the number, shape, size and angle of the leakage ports; the environmental sub-scene information includes obstacle information, wind speed, wind direction and temperature information within a preset range around the minimum monitoring unit, and the obstacles include terrain and buildings.

[0076] In an optional embodiment of the present application, determining the potential ignition area corresponding to the minimum monitoring unit target leakage scenario based on the natural gas pipeline leakage simulation model specifically includes:

[0077] Determine the target obstacle corresponding to the target leakage scenario of the minimum monitoring unit based on the natural gas pipeline leakage simulation model; the target obstacle is an obstacle with an ignition source within a preset range around the minimum monitoring unit;

[0078] Based on the structural information of the target obstacle corresponding to the minimum monitoring unit target leakage scenario, a potential ignition area corresponding to the minimum monitoring unit target leakage scenario is determined.

[0079] In an optional embodiment of the present application, the preset time period is a time period when there is a risk of combustion and explosion, and the target moment is a moment when there is an area in the corresponding concentration field where the concentration value is within the preset explosion limit range; the target area corresponding to the target moment is an area in the concentration field corresponding to the target moment where the concentration value is within the preset explosion limit range.

[0080] In an optional embodiment of the present application, determining the target ignition area corresponding to the target time based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time specifically includes:

[0081] Based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time, determining an overlapping area between the potential ignition area and the target area;

[0082] The overlapping area between the potential ignition area and the target area is used as the target ignition area corresponding to the target time.

[0083] In an optional embodiment of the present application, each test task corresponding to each target time includes a plurality of test subtasks arranged in time sequence, and each test subtask includes position indication information of the jet fire ignition device;

[0084] Correspondingly, the test tasks corresponding to each target time are used to control the jet fire ignition device in the pre-built natural gas pipeline leakage explosion test device to move to the target position and perform the explosion test until all the test tasks corresponding to each target time are completed, specifically including:

[0085] Step S1, based on the order of multiple test subtasks in the test task corresponding to the current target moment, sequentially send execution instructions of the test subtasks to be executed to the pre-built natural gas pipeline leakage and explosion experimental device, so as to control the jet fire ignition device in the pre-built natural gas pipeline leakage and explosion experimental device to move to the target position corresponding to the test subtask to be executed and perform the explosion test;

[0086] Step S2, determine whether the test task corresponding to the current target time has been completed, if so, execute step S3, otherwise jump to execute step S1;

[0087] Step S3, determining whether all test tasks corresponding to each target time have been executed, if so, executing step S4, otherwise executing the test task corresponding to the next target time and jumping to step S1;

[0088] Step S4, outputting target leakage scenario test completion indication information.

[0089] In an optional embodiment of the present application, the jet fire ignition device in the pre-built natural gas pipeline leakage and explosion experimental device is detachably arranged on the three-dimensional moving mechanism.

[0090] Figure 6 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 6 As shown, the electronic device may include: a processor (processor) 301, a communication interface (Communications Interface) 302, a memory (memory) 303 and a communication bus 304, wherein the processor 301, the communication interface 302, and the memory 303 communicate with each other through the communication bus 304. The processor 301 can call the logic instructions in the memory 303 to execute the method for arranging the multi-angle jet fire ignition device of the natural gas pipeline, which method includes: taking the minimum monitoring unit of the natural gas pipeline as the target, constructing a natural gas pipeline leakage simulation model based on the target leakage scenario information, and determining the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period based on the natural gas pipeline leakage simulation model; determining the target time within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target time based on the concentration field information at different times within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit; determining the target ignition area corresponding to the target time based on the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target time; generating the test task corresponding to each target time based on the target ignition area corresponding to the target time, and controlling the jet fire ignition device in the pre-built natural gas pipeline leakage explosion experimental device to move to the target position and perform the explosion test based on the test task corresponding to each target time, until all the test tasks corresponding to each target time are executed.

[0091] In addition, the logic instructions in the above-mentioned memory 303 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0092] On the other hand, the present invention also provides a computer program product, the computer program product includes a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute the method for arranging a multi-angle jet ignition ignition device for a natural gas pipeline provided by the above methods, the method comprising: taking the minimum monitoring unit of the natural gas pipeline as a target, constructing a natural gas pipeline leakage simulation model based on target leakage scenario information, and determining the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period based on the natural gas pipeline leakage simulation model; based on the target leakage scenario of the minimum monitoring unit, The target moment within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target moment are determined based on the concentration field information at different times within the preset time period corresponding to the scenario; the target ignition area corresponding to the target moment is determined based on the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target moment; the test tasks corresponding to each target moment are generated based on the target ignition area corresponding to the target moment, and based on the test tasks corresponding to each target moment, the jet fire ignition device in the pre-built natural gas pipeline leakage explosion experimental device is controlled to move to the target position and perform explosion tests until all the test tasks corresponding to each target moment are completed.

[0093] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for arranging a multi-angle jet fire ignition device for a natural gas pipeline provided by the above-mentioned methods, the method comprising: taking the minimum monitoring unit of the natural gas pipeline as a target, constructing a natural gas pipeline leakage simulation model based on target leakage scenario information, and determining the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period based on the natural gas pipeline leakage simulation model; determining the target time within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target time based on the concentration field information at different times within the preset time period corresponding to the target leakage scenario of the minimum monitoring unit; determining the target ignition area corresponding to the target time based on the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target time; generating a test task corresponding to each target time based on the target ignition area corresponding to the target time, and controlling the jet fire ignition device in the pre-built natural gas pipeline leakage explosion experimental device to move to the target position and perform an explosion test based on the test task corresponding to each target time, until all the test tasks corresponding to each target time are executed.

[0094] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0095] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the method for arranging a multi-angle jet ignition device for a natural gas pipeline described in each embodiment or some parts of the embodiment.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for arranging a multi-angle jet fire ignition device for a natural gas pipeline, characterized in that: include: Taking the minimum monitoring unit of the natural gas pipeline as the target, a natural gas pipeline leakage simulation model is constructed based on the target leakage scenario information, and based on the natural gas pipeline leakage simulation model, the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period are determined; Based on the concentration field information at different times within the preset period corresponding to the target leakage scenario of the minimum monitoring unit, determine the target time within the preset period corresponding to the target leakage scenario of the minimum monitoring unit and the target area corresponding to the target time; the target time is specifically the ignition time node corresponding to the actual measurement process; the target area is specifically the area where an explosion may occur; Determining a target ignition area corresponding to the target time based on a potential ignition area corresponding to the minimum monitoring unit target leakage scenario and a target area corresponding to the target time; Based on the target ignition area corresponding to the target time, a test task corresponding to each target time is generated; based on the test task corresponding to each target time, a jet fire ignition device in a pre-built natural gas pipeline leakage explosion test device is controlled to move to a target position and perform an explosion test until all the test tasks corresponding to each target time are completed; Wherein, determining the target ignition area corresponding to the target time based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time specifically includes: Based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time, determining an overlapping area between the potential ignition area and the target area; The overlapping area between the potential ignition area and the target area is used as the target ignition area corresponding to the target time.

2. The method for arranging a multi-angle jet fire ignition device for a natural gas pipeline according to claim 1 is characterized in that: The target leakage scene information is composed of natural gas pipeline sub-scene information and environmental sub-scene information. The natural gas pipeline sub-scene information includes the length, diameter, material, wall thickness, pipeline pressure and flow of the minimum monitoring unit, and the number, shape, size and angle of the leakage ports; the environmental sub-scene information includes obstacle information, wind speed, wind direction and temperature information within a preset range around the minimum monitoring unit, and the obstacles include terrain and buildings.

3. The method for arranging a multi-angle jet fire ignition device for a natural gas pipeline according to claim 2 is characterized in that: The determining of the potential ignition area corresponding to the minimum monitoring unit target leakage scenario based on the natural gas pipeline leakage simulation model specifically includes: Determine the target obstacle corresponding to the target leakage scenario of the minimum monitoring unit based on the natural gas pipeline leakage simulation model; the target obstacle is an obstacle with an ignition source within a preset range around the minimum monitoring unit; Based on the structural information of the target obstacle corresponding to the minimum monitoring unit target leakage scenario, a potential ignition area corresponding to the minimum monitoring unit target leakage scenario is determined.

4. The method for arranging a multi-angle jet fire ignition device for a natural gas pipeline according to claim 3 is characterized in that: The preset time period is a time period when there is a risk of explosion, the target time is a time when there is an area in the corresponding concentration field where the concentration value is within the preset explosion limit range; the target area corresponding to the target time is an area in the concentration field corresponding to the target time where the concentration value is within the preset explosion limit range.

5. The method for arranging a multi-angle jet fire ignition device for a natural gas pipeline according to claim 4 is characterized in that: The test task corresponding to each target time includes a plurality of test subtasks arranged in time sequence, and each test subtask includes position indication information of the jet fire ignition device; Correspondingly, the test tasks corresponding to each target time are used to control the jet fire ignition device in the pre-built natural gas pipeline leakage explosion test device to move to the target position and perform the explosion test until all the test tasks corresponding to each target time are completed, specifically including: Step S1, based on the order of multiple test subtasks in the test task corresponding to the current target moment, sequentially send execution instructions of the test subtasks to be executed to the pre-built natural gas pipeline leakage and explosion experimental device, so as to control the jet fire ignition device in the pre-built natural gas pipeline leakage and explosion experimental device to move to the target position corresponding to the test subtask to be executed and perform the explosion test; Step S2, determine whether the test task corresponding to the current target time has been completed, if so, execute step S3, otherwise jump to execute step S1; Step S3, determining whether all test tasks corresponding to each target time have been executed, if so, executing step S4, otherwise executing the test task corresponding to the next target time and jumping to step S1; Step S4, outputting target leakage scenario test completion indication information.

6. The method for arranging a multi-angle jet fire ignition device for a natural gas pipeline according to claim 5 is characterized in that: The jet fire ignition device in the pre-built natural gas pipeline leakage and explosion experimental device is detachably arranged on the three-dimensional moving mechanism.

7. A multi-angle jet fire ignition device arrangement system for a natural gas pipeline, characterized in that: include: A potential ignition area and concentration field information determination module is used to build a natural gas pipeline leakage simulation model based on the target leakage scenario information with the minimum monitoring unit of the natural gas pipeline as the target, and determine the potential ignition area corresponding to the target leakage scenario of the minimum monitoring unit and the concentration field information at different times within a preset time period based on the natural gas pipeline leakage simulation model; A target area determination module is used to determine the target time within the preset period corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time based on the concentration field information at different times within the preset period corresponding to the minimum monitoring unit target leakage scenario; the target time is specifically the ignition time node corresponding to the actual measurement process; the target area is specifically the area where an explosion may occur; A target ignition area determination module, used to determine the target ignition area corresponding to the target time based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time; An ignition device arrangement module is used to generate a test task corresponding to each target moment based on the target ignition area corresponding to the target moment, and control the jet fire ignition device in the pre-built natural gas pipeline leakage explosion test device to move to the target position and perform an explosion test based on the test task corresponding to each target moment, until all the test tasks corresponding to each target moment are completed; Wherein, determining the target ignition area corresponding to the target time based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time specifically includes: Based on the potential ignition area corresponding to the minimum monitoring unit target leakage scenario and the target area corresponding to the target time, determining an overlapping area between the potential ignition area and the target area; The overlapping area between the potential ignition area and the target area is used as the target ignition area corresponding to the target time.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the method for arranging a multi-angle jet fire ignition device for a natural gas pipeline as described in any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for arranging a multi-angle jet fire ignition device for a natural gas pipeline as claimed in any one of claims 1 to 6 is implemented.

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