Leakage calculation method, system and equipment for liquid hazardous chemical substances in different scenes

Abstract

The invention discloses a leakage calculation method, system and equipment for liquid hazardous chemical substances in different scenes, and belongs to the technical field of hazardous chemical substance research. The method comprises the following steps: determining a current leakage scene according to environment inspection data; wherein the environment detection data at least comprises a leakage opening area, a leakage coefficient, internal pressure, environment pressure and physical and chemical properties of the liquid hazardous chemical substance; determining a matched target calculation model based on the current leakage scene; wherein the target calculation model at least comprises a leakage rate calculation unit, a flash evaporation rate calculation unit and a liquid pool evaporation capacity calculation unit; different leakage scenes correspond to different calculation models; and based on the target calculation model, calculating a cloud cluster gas amount and a liquid pool liquid amount generated by liquid hazardous chemical substance leakage in the current leakage scene. By means of the method, the gas-liquid two-phase leakage amount generated when the liquid hazardous chemical substance leaks is calculated.

Description

Technical Field

[0001] The present application relates to the technical field of hazardous chemicals research, and in particular to a method, system, and equipment for calculating leakage of liquid hazardous chemicals in different scenarios. Background Art

[0002] With rapid economic development, demand for hazardous chemicals such as gasoline and crude oil is increasing. However, during storage in tanks, pipeline transportation, or equipment operation, these chemicals often leak, releasing large amounts of toxic and harmful gases and liquids. Typically, for ease of storage and transportation, hazardous chemicals are stored under pressure at room temperature or low temperature, depending on their properties. Once leaked, hazardous chemicals form clouds and pools near the ground, posing a serious threat to nearby personnel. Furthermore, fires and explosions caused by these leaks are characterized by suddenness, rapid spread, and significant destructive power, posing a serious threat to the safety of life, property, and the ecological environment.

[0003] Hazard assessments for hazardous chemical leaks primarily involve determining the severity of the accident, the scope of impact, and potential secondary pollution. When toxic, flammable, or explosive hazardous chemicals leak, they not only accumulate on the ground to form pools but also form clouds due to flash evaporation and other factors. Influenced by factors such as wind and chemical concentration gradients, these gases diffuse over the ground, leading to hazardous areas at the accident site where combustion, explosion, or the formation of hazardous gas clouds may occur. Pools of liquid can lead to fires and explosions. Therefore, determining key information, such as the amount of hazardous chemicals leaked and the changes in their phases following a leak, is crucial for guiding the evacuation of residents within the hazardous area and minimizing the damage caused by the accident.

[0004] Practical research has revealed that scholars have already conducted relevant research on hazardous chemical leak accidents. Patent CN115876646B discloses a device for simulating the fire behavior characteristics of gas hazardous chemical leaks. This device includes an environmental simulation system, multiple leak-point components, and a measurement and monitoring system, enabling more realistic simulation of the fire behavior and evolution characteristics of gas hazardous chemical leaks. Patent CN110793735B discloses a device for simulating the leakage of liquid hazardous chemicals. This device can effectively simulate the leakage of different types of hazardous chemicals under different conditions when a storage tank leaks during transportation, and study the leakage rate of liquid hazardous chemicals. Patent CN102096768 B discloses a method for assessing pollution from hazardous chemical leaks. This invention classifies hazardous chemical diffusion sources into four scenarios: instantaneous leakage source heavy gas diffusion, instantaneous leakage source non-heavy gas diffusion, continuous leakage source heavy gas diffusion, and continuous leakage source non-heavy gas diffusion. It calculates the leakage sources under different scenarios, determines, and displays the contamination range. Patent CN107944070 A discloses a method for generating a hazardous chemical gas leakage diffusion model. This method selects a corresponding gas diffusion model based on site conditions, gas type, and weather conditions. A learner combination corresponding to the leaked gas type is trained, and a leak gas diffusion simulation is generated based on the gas diffusion model and learner combination. Patent CN106442875 B discloses a hazardous chemical leak disposal experimental simulation system and method. The system includes devices for simulating gaseous and liquid hazardous chemical leaks and devices for simulating the decontamination and disposal of solid powder and liquid decontaminants. Hazardous chemical decontamination and disposal effectiveness tests are conducted within a specially designed test chamber. Online concentration monitoring during the test determines the reaction progress and test results. Switches and flow control enable switching between different leak simulation and disposal modes. A valve at the bottom of the test chamber connects to the lower waste liquid and solid waste disposal system, and a ventilation duct connects to the lower gas disposal system, ensuring environmentally friendly post-test discharge. Patent CN116338099 A discloses a gaseous hazardous chemical leak simulation test chamber. This system effectively simulates the leakage of different types of hazardous chemicals under different conditions when a gas cylinder leaks, allowing for the study of gaseous hazardous chemical leakage rates.

[0005] An in-depth investigation and analysis of current technologies revealed the following key limitations of existing devices for simulating hazardous chemical leaks: Most of these devices can only simulate a single-phase leak of hazardous chemicals, failing to fully account for the transition between gas and liquid phases that often occurs in actual leak scenarios. This transition not only affects the diffusion rate, direction, and range of the leaked material but can also pose varying degrees of harm to the surrounding environment. Therefore, existing devices are significantly deficient in their ability to simulate the authenticity and comprehensiveness of hazardous chemical leaks. There is an urgent need to develop new leak simulation devices that can accurately simulate gas-liquid phase transitions to more effectively assess and address the risks and challenges posed by hazardous chemical leaks.

[0006] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0007] The purpose of the present invention is to provide a leakage calculation method, system and equipment for liquid hazardous chemicals in different scenarios to improve the above-mentioned problems.

[0008] To achieve the above object, the present invention is achieved as follows:

[0009] In the first aspect, an embodiment of the present application provides a method for calculating the leakage of liquid hazardous chemicals in different scenarios, including: determining the current leakage scenario based on environmental inspection data; wherein the environmental detection data includes at least the leakage port area, leakage coefficient, internal pressure, ambient pressure and the physical and chemical properties of the liquid hazardous chemicals; based on the current leakage scenario, determining a matching target calculation model; wherein the target calculation model includes at least a leakage rate calculation unit, a flash evaporation rate calculation unit, and a liquid pool evaporation amount calculation unit; different leakage scenarios correspond to different calculation models; based on the target calculation model, calculating the amount of cloud gas and the amount of liquid in the liquid pool generated by the leakage of liquid hazardous chemicals in the current leakage scenario.

[0010] Optionally, the calculation of the cloud gas volume and the liquid pool liquid volume generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the target model includes: calculating the leakage rate based on the environmental inspection data and the leakage rate calculation unit in the target calculation model; calculating the flash evaporation rate based on the environmental inspection data and the flash evaporation rate calculation unit in the target calculation model; calculating the liquid pool evaporation volume based on the environmental inspection data and the liquid pool evaporation volume calculation unit in the target calculation model; calculating the cloud gas volume and the liquid pool liquid volume generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the leakage rate, the flash evaporation rate and the liquid pool evaporation volume.

[0011] Optionally, the leakage rate, based on the flash evaporation rate and the liquid pool evaporation amount, calculates the cloud gas amount and the liquid pool liquid amount generated by the leakage of liquid hazardous chemicals in the current leakage scenario, including: determining the initial cloud gas amount and the initial liquid pool liquid amount based on the leakage rate and the flash evaporation rate; and calculating the cloud gas amount and the liquid pool liquid amount generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the liquid pool evaporation amount, the initial cloud gas amount and the initial liquid pool liquid amount.

[0012] Optionally, the initial cloud gas volume also includes the cloud's own gas volume and the amount of droplets entrained in the cloud.

[0013] Optionally, the evaporation amount of the liquid pool includes heat evaporation amount and mass evaporation amount.

[0014] Optionally, the calculation of the cloud gas amount and the liquid pool liquid amount generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the liquid pool evaporation amount, the initial cloud gas amount and the initial liquid pool liquid amount includes: summing the initial cloud gas amount with the heat evaporation amount and the mass evaporation amount to obtain the cloud gas amount generated by the leakage of liquid hazardous chemicals in the current leakage scenario; and subtracting the initial liquid pool liquid amount from the heat evaporation amount and the mass evaporation amount to obtain the liquid pool liquid amount generated by the leakage of liquid hazardous chemicals in the current leakage scenario.

[0015] Optionally, the method further includes: predicting the cloud diffusion path and the liquid pool coverage range based on the cloud gas volume and the liquid pool liquid volume generated by the leakage of liquid hazardous chemicals in the current leakage scenario.

[0016] Optionally, the method further includes: determining an evacuation strategy based on the cloud diffusion path and the liquid pool coverage.

[0017] In the second aspect, an embodiment of the present application provides a leakage calculation system for liquid hazardous chemicals in different scenarios, including: a scenario determination module, used to determine the current leakage scenario based on environmental inspection data; wherein the environmental detection data includes at least the leakage port area, leakage coefficient, internal pressure, ambient pressure and the physical and chemical properties of the liquid hazardous chemicals; a matching module, used to determine a matching target calculation model based on the current leakage scenario; wherein the target calculation model includes at least a leakage rate calculation unit, a flash evaporation rate calculation unit, and a liquid pool evaporation amount calculation unit; different leakage scenarios correspond to different calculation models; a calculation module, used to calculate the amount of cloud gas and the amount of liquid in the liquid pool generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the target calculation model.

[0018] In a third aspect, an embodiment of the present application provides an electronic device, comprising: a processor and a memory, the processor and the memory being connected; the memory being used to store programs; the processor being used to call the programs stored in the memory to execute the method provided in the above-mentioned first aspect embodiment and / or in combination with some possible implementation methods of the above-mentioned first aspect embodiment.

[0019] In summary, this application provides a method for calculating the leakage of liquid hazardous chemicals in different scenarios, which has the following beneficial effects: it can accurately assess the amount of gas cloud and liquid pool liquid generated by liquid hazardous chemical leaks in different scenarios. This method includes the calculation of parameters such as leakage rate, flash evaporation rate, liquid volume in air, liquid volume in the liquid pool, and the time-varying evaporation volume of the liquid pool. This method enables the calculation of the gas-liquid two-phase leakage generated when a liquid hazardous chemical leak occurs.

[0020] In addition, based on the analysis results of gas-liquid two-phase conversion, this solution can predict the cloud diffusion path and liquid pool coverage in advance, making the community evacuation range more accurate and reducing the waste of social resources caused by unnecessary evacuation.

[0021] In addition, compared with existing evaluation methods, this method is more scientific, reliable, systematic and comprehensive. At the same time, it is also easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A module block diagram of an electronic device provided in an embodiment of the present application.

[0024] Figure 2 A flowchart of the steps of a method for calculating leakage of liquid hazardous chemicals in different scenarios provided in an embodiment of the present application.

[0025] Figure 3 A flowchart of the steps of another method for calculating leakage of liquid hazardous chemicals in different scenarios provided in an embodiment of the present application.

[0026] Figure 4 This is a module block diagram of a liquid hazardous chemical leakage calculation system in different scenarios provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0028] See also Figure 1 , a schematic structural block diagram of an electronic device 100 of a method and system for calculating leakage of liquid hazardous chemicals in different application scenarios provided in an embodiment of the present application. In the embodiment of the present application, the electronic device 100 can be a terminal or a server. The terminal can be, but is not limited to, a personal computer (PC), a smart phone, a tablet computer, a personal digital assistant (PDA), a mobile Internet device (MID), etc. The server can be, but is not limited to, a network server, a database server, a cloud server, or a server integration composed of multiple sub-servers, etc. Of course, the devices listed above are only used to facilitate the understanding of the embodiment of the present application, and they should not be used as a limitation on the embodiment.

[0029] Structurally, the electronic device 100 may include a processor 110 and a memory 120 .

[0030] The processor 110 and the memory 120 are electrically connected directly or indirectly to achieve data transmission or interaction. For example, these elements can be electrically connected to each other via one or more communication buses or signal lines.

[0031] The processor 110 may be an integrated circuit chip with signal processing capabilities. The processor 110 may also be a general-purpose processor, such as a central processing unit (CPU), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. In addition, the general-purpose processor may be a microprocessor or any conventional processor.

[0032] The memory 120 may be, but is not limited to, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electrically erasable programmable read-only memory (EEPROM). The memory 120 is used to store programs, and the processor 110 executes the programs after receiving execution instructions.

[0033] It should be noted that Figure 1 The structure shown is for illustration only. The electronic device 100 provided in the embodiment of the present application may also have Figure 1 Fewer or more components, or with Figure 1 Different configurations are shown. In addition, Figure 1 The components shown may be implemented by software, hardware or a combination thereof.

[0034] See also Figure 2 , Figure 2 This is a flowchart of a method for calculating the leakage of liquid hazardous chemicals in different scenarios provided by the embodiment of the present application. The method is applied to Figure 1 It should be noted that the leakage calculation method of liquid hazardous chemicals in different scenarios provided in the embodiment of the present application is not based on Figure 2 The order shown below is limited, and the method includes: steps 201 to 203.

[0035] Step 201: Determine the current leakage scenario based on environmental inspection data; wherein the environmental inspection data at least includes the leakage port area, leakage coefficient, internal pressure, environmental pressure and physical and chemical properties of the liquid hazardous chemicals.

[0036] Among them, leakage scenarios may include but are not limited to tank leakage, pipeline rupture, and equipment leakage.

[0037] The leak area is calculated based on the size of the crack; the leakage coefficient is related to the leak shape and fluid properties. The physical and chemical properties of liquid hazardous chemicals include but are not limited to boiling point, density, and specific heat capacity.

[0038] Step 202: Based on the current leakage scenario, determine a matching target calculation model; wherein the target calculation model includes at least a leakage rate calculation unit, a flash evaporation rate calculation unit, and a liquid pool evaporation amount calculation unit; different leakage scenarios correspond to different calculation models.

[0039] Step 203: Based on the target calculation model, calculate the cloud gas volume and the liquid volume in the liquid pool generated by the leakage of liquid hazardous chemicals in the current leakage scenario.

[0040] As can be seen, the embodiments of the present application provide a method for calculating the leakage of liquid hazardous chemicals in different scenarios, capable of accurately assessing the amount of gas cloud and liquid pool liquid generated by liquid hazardous chemical leaks in different scenarios. This method includes the calculation of parameters such as leakage rate, flash evaporation rate, amount of liquid in air, amount of liquid in the pool, and the time-varying evaporation rate of the pool. This method enables the calculation of the gas-liquid two-phase leakage generated when a liquid hazardous chemical leak occurs.

[0041] In addition, based on the analysis results of gas-liquid two-phase conversion, this solution can predict the cloud diffusion path and liquid pool coverage in advance, making the community evacuation range more accurate and reducing the waste of social resources caused by unnecessary evacuation.

[0042] In addition, compared with existing evaluation methods, this method is more scientific, reliable, systematic and comprehensive. At the same time, it is also easy to use.

[0043] Optionally, the calculation of the cloud gas volume and the liquid pool liquid volume generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the target model includes: calculating the leakage rate based on the environmental inspection data and the leakage rate calculation unit in the target calculation model; calculating the flash evaporation rate based on the environmental inspection data and the flash evaporation rate calculation unit in the target calculation model; calculating the liquid pool evaporation volume based on the environmental inspection data and the liquid pool evaporation volume calculation unit in the target calculation model; calculating the cloud gas volume and the liquid pool liquid volume generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the leakage rate, the flash evaporation rate and the liquid pool evaporation volume.

[0044] Optionally, the leakage rate, based on the flash evaporation rate and the liquid pool evaporation amount, calculates the cloud gas amount and the liquid pool liquid amount generated by the leakage of liquid hazardous chemicals in the current leakage scenario, including: determining the initial cloud gas amount and the initial liquid pool liquid amount based on the leakage rate and the flash evaporation rate; and calculating the cloud gas amount and the liquid pool liquid amount generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the liquid pool evaporation amount, the initial cloud gas amount and the initial liquid pool liquid amount.

[0045] For example, the initial cloud gas volume can be equal to the leakage rate * flash evaporation rate. The initial liquid volume in the liquid pool is equal to the leakage rate * (1-flash evaporation rate).

[0046] Optionally, the initial cloud gas volume also includes the cloud's own gas volume and the amount of droplets entrained in the cloud.

[0047] Optionally, the evaporation amount of the liquid pool includes heat evaporation amount and mass evaporation amount.

[0048] Among them, heat evaporation can refer to the evaporation of the liquid pool caused by the ambient heat, while mass evaporation can refer to the natural evaporation caused by the convection between the surface of the liquid pool and the air.

[0049] The total amount of evaporation from the liquid pool is obtained by adding the changes in heat evaporation and mass evaporation over time.

[0050] Optionally, the calculation of the cloud gas amount and the liquid pool liquid amount generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the liquid pool evaporation amount, the initial cloud gas amount and the initial liquid pool liquid amount includes: summing the initial cloud gas amount with the heat evaporation amount and the mass evaporation amount to obtain the cloud gas amount generated by the leakage of liquid hazardous chemicals in the current leakage scenario; and subtracting the initial liquid pool liquid amount from the heat evaporation amount and the mass evaporation amount to obtain the liquid pool liquid amount generated by the leakage of liquid hazardous chemicals in the current leakage scenario.

[0051] Optionally, the method further includes: predicting the cloud diffusion path and the liquid pool coverage range based on the cloud gas volume and the liquid pool liquid volume generated by the leakage of liquid hazardous chemicals in the current leakage scenario.

[0052] Optionally, the method further includes: determining an evacuation strategy based on the cloud diffusion path and the liquid pool coverage.

[0053] It should be noted that different evacuation strategies can be formulated in advance for different cloud cluster expansion paths and liquid pool coverage areas. In subsequent practical applications, corresponding evacuation strategies can be matched according to different cloud cluster expansion paths and liquid pool coverage areas.

[0054] See also Figure 3 The following is a complete example of a method for calculating the leakage of liquid hazardous chemicals in different scenarios, including steps 1 to 5.

[0055] Step 1: Determine the leakage scenario based on the leakage area, leakage coefficient, internal pressure, ambient pressure, and physical and chemical properties of the material.

[0056] Step 2: Calculate the leakage rate based on the input data such as leakage port area and leakage coefficient.

[0057] The algorithm can be derived from "AQ / T3046-2013 Guidelines for Quantitative Risk Assessment of Chemical Enterprises" and "Technical Guidelines for Environmental Risk Assessment of Construction Projects".

[0058] Step 3: When a hazardous chemical storage tank or pipeline leaks and is exposed to the environment, the liquid flashes, forming a gas cloud and a liquid pool. Calculate the flash evaporation rate (Fv) to determine the amount of gas in the resulting cloud, the amount of droplets entrained in the cloud, and the amount of liquid in the liquid pool.

[0059] The algorithm can be derived from "AQ / T3046-2013 Guidelines for Quantitative Risk Assessment of Chemical Enterprises".

[0060] Step 4: A leak in a hazardous chemical storage tank or pipeline creates a pool of liquid. Calculate the evaporation rate based on the surrounding factors. The pool will experience both heat and mass evaporation. The total evaporation rate is calculated by adding the heat and mass evaporation over time.

[0061] The algorithm can be derived from "AQ / T3046-2013 Guidelines for Quantitative Risk Assessment of Chemical Enterprises".

[0062] Step 5: Determine the amount of cloud gas and liquid in the liquid pool generated by the hazardous chemical leak based on the leakage rate, flash evaporation rate, the amount of liquid in the air, the amount of liquid in the liquid pool, and the evaporation amount of the liquid pool over time.

[0063] In summary, the present invention provides a method for evaluating the amount of cloud gas and liquid pool liquid generated by liquid hazardous chemical leakage in different scenarios. Different calculation formulas are selected according to different leakage scenarios, and the amount of cloud gas and liquid pool liquid generated by the leakage of hazardous chemicals are determined by calculation in combination with factors surrounding the leakage. The method for evaluating the amount of cloud gas and liquid pool liquid generated by the leakage of liquid hazardous chemicals in different scenarios is relatively accurate. In addition, the method for evaluating the amount of cloud gas and liquid pool liquid generated by the leakage of liquid hazardous chemicals in different scenarios described in the present invention is simple to use.

[0064] This method has achieved remarkable results in terms of functional benefits, social benefits and innovative benefits, and provides a relatively accurate, intuitive and easy-to-use assessment and support for the calculation of the cloud gas volume and liquid volume in the liquid pool generated by liquid hazardous chemical leakage in different scenarios.

[0065] In terms of functionality and effectiveness, this assessment method achieves multi-phase quantitative analysis of hazardous chemical leaks through a five-step calculation process: determining the scenario type based on leak port parameters and material properties (step 1), calculating the leak rate using industry-standard formulas (step 2), analyzing the gas-liquid conversion process through flash evaporation rates (step 3), calculating the total amount of liquid pool evaporation based on environmental factors (step 4), and finally outputting a comprehensive output of the cloud gas volume and the liquid pool residual volume (step 5). This method accurately simulates the multi-phase material distribution of tank / pipeline leaks, including gas clouds, droplet entrainment, and liquid pool diffusion, addressing the shortcomings of traditional single-phase simulations.

[0066] In terms of social benefits, analysis of gas-liquid phase conversion can predict cloud diffusion paths and liquid pool coverage in advance, enabling more accurate community evacuation demarcation and reducing the waste of social resources caused by unnecessary evacuations. By producing standardized risk assessment reports, environmental protection authorities can strengthen their oversight of the environmental impacts of leaks and promote the development of an ecological and environmental protection system around the plant.

[0067] In terms of innovative benefits, the system has systematically reorganized multiple calculation methods scattered across industry guidelines to form a scalable hazardous chemical leak analysis toolkit. Through a standardized interface design for gas-liquid dual-phase output parameters, it can be directly connected to the emergency command system platform, generating an electronic sandbox for diffusion prediction and promoting the upgrading of emergency drill models.

[0068] In summary, this paper proposes a method for assessing the amount of gas cloud and liquid pool generated by liquid hazardous chemical leaks in different scenarios. This method establishes a method that can be applied to calculate the amount of gas cloud and liquid pool generated by hazardous chemical leaks under different conditions. This method includes the calculation of parameters such as leakage rate, flash evaporation rate, amount of liquid in the air, amount of liquid in the pool, and the time-varying evaporation rate of the pool. This method enables the calculation of the amount of gas-liquid two-phase leakage generated when a liquid hazardous chemical leak occurs. Compared with existing assessment methods, this method is more scientific, reliable, systematic, and comprehensive.

[0069] See also Figure 4 Based on the same inventive concept, the present embodiment further provides a leakage calculation system 400 for liquid hazardous chemicals in different scenarios, the system comprising:

[0070] The scenario determination module 401 is used to determine the current leakage scenario based on the environmental inspection data; wherein the environmental detection data at least includes the leakage port area, leakage coefficient, internal pressure, environmental pressure and the physical and chemical properties of the liquid hazardous chemicals.

[0071] The matching module 402 is used to determine a matching target calculation model based on the current leakage scenario; wherein the target calculation model includes at least a leakage rate calculation unit, a flash evaporation rate calculation unit, and a liquid pool evaporation amount calculation unit; different leakage scenarios correspond to different calculation models.

[0072] The calculation module 403 is used to calculate the amount of cloud gas and the amount of liquid in the liquid pool generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the target calculation model.

[0073] Optionally, the calculation module 403 is also specifically used to calculate the leakage rate based on the environmental inspection data and the leakage rate calculation unit in the target calculation model; calculate the flash evaporation rate based on the environmental inspection data and the flash evaporation rate calculation unit in the target calculation model; calculate the liquid pool evaporation amount based on the environmental inspection data and the liquid pool evaporation amount calculation unit in the target calculation model; and calculate the cloud gas amount and liquid pool liquid amount generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the leakage rate, the flash evaporation rate and the liquid pool evaporation amount.

[0074] Optionally, the calculation module 403 is also specifically used to determine the initial cloud gas volume and the initial liquid pool liquid volume based on the leakage rate and the flash evaporation rate; and to calculate the cloud gas volume and liquid pool liquid volume generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the liquid pool evaporation volume, the initial cloud gas volume and the initial liquid pool liquid volume.

[0075] Optionally, the calculation module 403 is further specifically configured to: the initial cloud gas volume also includes the cloud's own gas volume and the amount of droplets entrained in the cloud.

[0076] Optionally, the calculation module 403 is further specifically configured to: the evaporation amount of the liquid pool includes heat evaporation amount and mass evaporation amount.

[0077] Optionally, the calculation module 403 is also specifically used to sum the initial cloud gas volume, the heat evaporation volume and the mass evaporation volume to obtain the cloud gas volume generated by the leakage of liquid hazardous chemicals in the current leakage scenario; and subtract the initial liquid pool liquid volume from the heat evaporation volume and the mass evaporation volume to obtain the liquid pool liquid volume generated by the leakage of liquid hazardous chemicals in the current leakage scenario.

[0078] Optionally, the liquid hazardous chemical leakage calculation system 400 in different scenarios is also used to predict the cloud diffusion path and liquid pool coverage based on the cloud gas volume and liquid pool liquid volume generated by the liquid hazardous chemical leakage in the current leakage scenario.

[0079] Optionally, the leakage calculation system 400 for liquid hazardous chemicals in different scenarios is further used to determine an evacuation strategy based on the cloud diffusion path and the coverage of the liquid pool.

[0080] It should be noted that, since those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0081] Based on the same inventive concept, an embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed, the method provided in the above embodiment is executed.

[0082] The storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, or magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid-state drive (SSD)).

[0083] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interface, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0084] In addition, the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0085] Furthermore, the functional modules in each embodiment of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0086] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0087] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method for calculating leakage of liquid hazardous chemicals in different scenarios, characterized by: include: Determine the current leakage scenario based on environmental inspection data; wherein the environmental inspection data includes at least the leakage port area, leakage coefficient, internal pressure, ambient pressure, and physical and chemical properties of the liquid hazardous chemicals; Based on the current leakage scenario, a matching target calculation model is determined; wherein the target calculation model includes at least a leakage rate calculation unit, a flash evaporation rate calculation unit, and a liquid pool evaporation amount calculation unit; different leakage scenarios correspond to different calculation models; Based on the target calculation model, the amount of cloud gas and the amount of liquid in the liquid pool generated by the leakage of liquid hazardous chemicals in the current leakage scenario are calculated.

2. The method for calculating leakage of liquid hazardous chemicals in different scenarios according to claim 1 is characterized in that: The calculating, based on the target model, the amount of cloud gas and the amount of liquid in the liquid pool generated by the leakage of the liquid hazardous chemical in the current leakage scenario includes: Calculating a leakage rate based on the environmental inspection data and a leakage rate calculation unit in the target calculation model; Calculating a flash evaporation rate based on the environmental inspection data and a flash evaporation rate calculation unit in the target calculation model; Calculating the evaporation amount of the liquid pool based on the environmental detection data and the liquid pool evaporation amount calculation unit in the target calculation model; Based on the leakage rate, the flash evaporation rate, and the evaporation amount of the liquid pool, the cloud gas amount and the liquid pool liquid amount generated by the leakage of the liquid hazardous chemical in the current leakage scenario are calculated.

3. The method for calculating leakage of liquid hazardous chemicals in different scenarios according to claim 2 is characterized in that: Calculating the amount of cloud gas and liquid pool liquid generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the leakage rate, the flash evaporation rate, and the evaporation amount of the liquid pool includes: Determining an initial cloud gas volume and an initial liquid pool liquid volume based on the leakage rate and the flash evaporation rate; The cloud gas volume and the liquid pool liquid volume generated by the leakage of liquid hazardous chemicals in the current leakage scenario are calculated based on the liquid pool evaporation volume, the initial cloud gas volume and the initial liquid pool liquid volume.

4. The method for calculating leakage of liquid hazardous chemicals in different scenarios according to claim 3 is characterized in that: The initial cloud gas volume also includes the gas volume of the cloud itself and the amount of droplets entrained in the cloud.

5. The method for calculating leakage of liquid hazardous chemicals in different scenarios according to claim 3 is characterized in that: The evaporation amount of the liquid pool includes heat evaporation amount and mass evaporation amount.

6. The method for calculating leakage of liquid hazardous chemicals in different scenarios according to claim 5 is characterized in that: The calculating of the cloud gas volume and the liquid pool liquid volume generated by the leakage of the liquid hazardous chemical in the current leakage scenario based on the liquid pool evaporation volume, the initial cloud gas volume, and the initial liquid pool liquid volume includes: The initial cloud gas volume, the heat evaporation volume, and the mass evaporation volume are summed to obtain the cloud gas volume generated by the leakage of the liquid hazardous chemical in the current leakage scenario; The initial liquid volume in the liquid pool is subtracted from the heat evaporation volume and the mass evaporation volume to obtain the liquid volume in the liquid pool generated by the leakage of the liquid hazardous chemicals in the current leakage scenario.

7. The method for calculating leakage of liquid hazardous chemicals in different scenarios according to claim 1 is characterized in that: The method further comprises: Based on the amount of cloud gas and liquid pool liquid generated by the leakage of liquid hazardous chemicals in the current leakage scenario, the cloud diffusion path and the coverage range of the liquid pool are predicted.

8. The method for calculating leakage of liquid hazardous chemicals in different scenarios according to claim 7 is characterized in that: The method further comprises: An evacuation strategy is determined based on the cloud diffusion path and the liquid pool coverage.

9. A leakage calculation system for liquid hazardous chemicals in different scenarios, characterized by: include: A scenario determination module is used to determine the current leakage scenario based on environmental inspection data; wherein the environmental detection data includes at least the leakage port area, leakage coefficient, internal pressure, ambient pressure and the physical and chemical properties of the liquid hazardous chemical; a matching module for determining a matching target calculation model based on the current leakage scenario; wherein the target calculation model includes at least a leakage rate calculation unit, a flash evaporation rate calculation unit, and a liquid pool evaporation amount calculation unit; different leakage scenarios correspond to different calculation models; The calculation module is used to calculate the cloud gas volume and the liquid volume in the liquid pool generated by the leakage of liquid hazardous chemicals in the current leakage scenario based on the target calculation model.

10. An electronic device, characterized in that: include: a processor and a memory, the processor and the memory being connected; The memory is used to store programs; The processor is configured to run the program stored in the memory and execute the method according to any one of claims 1 to 8.

Images