Device for verifying air transportation risk of dangerous goods

Abstract

The utility model discloses a device for risk verification of air transportation of dangerous goods, which comprises an experimental sample, a risk simulation verification box and an oxygen bottle, and a lifting platform for placing the experimental sample is arranged in an inner cavity of the risk simulation verification box; a thermal runaway triggering assembly, a temperature detection assembly and an oxygen concentration sensor are arranged in an inner cavity of the risk simulation verification box corresponding to the experimental sample, the thermal runaway triggering assembly comprises a plurality of heating rods, and the temperature detection assembly comprises a plurality of temperature sensors arranged around the experimental sample; the oxygen bottle is communicated with an inner cavity of the risk simulation verification box through a pipeline; and the inner cavity of the risk simulation verification box is connected with a camera corresponding to the experimental sample through a camera bracket. The device can simulate the air transportation environment of an airplane cargo cabin or a passenger plane auxiliary cabin, realizes the research on the influence of multi-parameter coupling factors on air transportation dangerous goods, and has the advantages of simplicity in operation, easiness in test development and the like.

Description

Technical Field

[0001] This utility model relates to the field of air cargo transport safety, and in particular to a device for verifying the risks of air transport of dangerous goods. Background Technology

[0002] With the rapid development of the national economy and the continuous improvement of people's living standards, new products and technologies are constantly emerging, leading to a year-on-year increase in the demand and volume of air transport. The volume of dangerous goods transported by air has also remained high for many years. As the types and quantities of goods transported by air increase daily, air transport incidents occur frequently, posing a significant challenge to civil aviation safety. Investigating air transport incidents is a complex and systematic project that requires consideration of various factors. Regarding the nature of the goods themselves, due to the wide variety of goods, especially dangerous goods which may contain flammable solids, flammable liquids, explosive solids, lithium batteries, etc., specialized facilities and equipment are needed to handle air transport incidents involving these items. Furthermore, the diverse types of goods may experience humid, hot, low-pressure, high-oxygen, and high-flammable-gas environments during air transport. In investigating the causes of incidents, it is often necessary to reconstruct the environmental conditions on board the aircraft, including temperature, pressure, humidity, and gas concentrations.

[0003] Currently, there is no established testing and verification laboratory for dangerous goods air transport incidents, and the lack of testing and verification equipment and methods hinders the investigation of the true causes of dangerous goods air transport incidents, as well as the identification and improvement of risk factors leading to such incidents, thus preventing a genuine improvement in the safety of dangerous goods air transport. Existing technologies cannot control parameters such as pressure, temperature, gas concentration, and humidity, nor can they provide real-time observation and measurement of sample conditions. Therefore, they are unsuitable for verifying dangerous goods air transport incidents occurring in the auxiliary compartments of civil aviation cargo planes or passenger aircraft. Further research is needed on methods for verifying dangerous goods air transport incidents. Utility Model Content

[0004] The purpose of this invention is to solve the technical problems pointed out in the background art and to provide a device for verifying the risks of air transport of dangerous goods. It can adjust environmental parameters such as pressure, temperature, gas concentration, and humidity to simulate the air transport environment of an aircraft cargo hold or passenger aircraft auxiliary cabin. The camera observes and records the monitoring images of the experimental sample in real time, and the various sensors collect and record environmental parameter data in real time. It studies one or more parameter combinations of data that cause thermal runaway or fire events in the experimental sample, and realizes the study of the influence of multi-parameter coupling factors on air transport of dangerous goods and explores the conditions that trigger air transport events.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An apparatus for verifying the risks of air transport of dangerous goods includes an experimental sample, a risk simulation verification chamber, and an oxygen cylinder. The chamber's interior is equipped with a lifting platform for placing the experimental sample. Corresponding to the experimental sample, the chamber's interior is equipped with a thermal runaway triggering component, a temperature detection component, and an oxygen concentration sensor. The thermal runaway triggering component includes several heating rods, and the temperature detection component includes several temperature sensors arranged around the experimental sample. The oxygen cylinder is connected to the chamber's interior via a pipe. A camera corresponding to the experimental sample is mounted on the chamber's interior via a camera bracket.

[0007] To better realize this utility model, a pressure sensor is provided in the inner cavity of the risk simulation verification box corresponding to the experimental sample, and the risk simulation verification box is connected to a vacuum pump and a pressure pump that communicate with the inner cavity of the risk simulation verification box.

[0008] Preferably, the risk simulation verification box has a humidity sensor installed in the inner cavity corresponding to the experimental sample, and the risk simulation verification box is connected to a circulating air duct that communicates with the inner cavity of the risk simulation verification box. A circulating fan, a humidifier and a dehumidifier are installed on the circulating air duct.

[0009] Preferably, a pressure reducing valve and a gas flow meter are installed on the pipeline between the oxygen cylinder and the risk simulation verification box, and a vacuum blind flange C is installed on the pipeline between the oxygen cylinder and the risk simulation verification box.

[0010] Preferably, the present invention further includes a thermal runaway adjustment panel, which is electrically connected to the thermal runaway triggering component.

[0011] Preferably, the present invention further includes a temperature acquisition module, which is connected to the temperature detection component.

[0012] Preferably, the lifting platform is equipped with a lifting bracket at its bottom; the risk simulation verification box is provided with an observation window and an exhaust fan, and the inner cavity of the risk simulation verification box is equipped with a lighting lamp corresponding to the experimental sample; the thermal runaway triggering component also includes an igniter.

[0013] Preferably, a protective pipe B is provided between the temperature acquisition module and the risk simulation verification box. The protective pipe B is sealed to the risk simulation verification box by a vacuum blind flange B. The temperature acquisition module and the temperature detection component are connected by a line passing through the protective pipe B.

[0014] Preferably, a protective pipe A is provided between the thermal runaway adjustment panel and the risk simulation verification box. The connection between the protective pipe A and the risk simulation verification box is sealed by a vacuum blind flange A. The thermal runaway adjustment panel and the thermal runaway triggering component are connected by a line passing through the protective pipe A. The line located inside the risk simulation verification box is positioned and fixed by a line fixing buckle.

[0015] Preferably, the oxygen concentration sensor is connected to the inner cavity of the risk simulation verification chamber via a pipe with a vacuum blind flange D; the top of the risk simulation verification chamber is also connected to a pressure balance port and a manual exhaust port.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0017] (1) This utility model can adjust environmental parameters such as pressure, temperature, gas concentration, and humidity to simulate the air transport environment of the cargo hold or passenger cabin of an aircraft. The camera observes and records the monitoring images of the experimental sample in real time, and the various sensors collect and record environmental parameter data in real time. It studies one or more parameter combinations of data that cause thermal runaway or fire events of the experimental sample, realizes the study of the influence of multi-parameter coupling factors on dangerous goods transported by air, and explores the conditions that trigger air transport events.

[0018] (2) The device of this utility model is simple to operate and easy to conduct tests. It is suitable for verification operations of air transport incidents caused by various types of cargo. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the hazardous materials risk verification device in the embodiment;

[0020] Figure 2 for Figure 1 A simplified diagram of its three-dimensional structure.

[0021] The names corresponding to the reference numerals in the attached figures are as follows:

[0022] 1-Risk simulation verification box, 2-Lifting bracket, 3-Experimental sample, 4-Temperature acquisition module, 5-Thermal runaway adjustment panel, 6-Vacuum blind flange A, 7-Thermal runaway trigger component, 8-Camera, 9-Pressure balance port, 10-Wire fixing buckle, 11-Pressure sensor, 12-Manual exhaust port, 13-Vacuum blind flange B, 14-Oxygen cylinder, 15-Pressure reducing valve, 16-Gas flow meter, 17-Oxygen concentration sensor, 18-Vacuum blind flange C, 19-Vacuum blind flange D, 20-Temperature detection component. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the embodiments:

[0024] Example 1

[0025] like Figure 1 , Figure 2 As shown, an apparatus for verifying the risks of air transport of dangerous goods includes an experimental sample 3, a thermal runaway control panel 5, a temperature acquisition module 4, a risk simulation verification chamber 1, and an oxygen cylinder 14 (the oxygen cylinder 14 can be replaced with an air cylinder containing oxygen, which is a parameter in the risk verification of dangerous goods). The inner cavity of the risk simulation verification chamber 1 is equipped with a lifting platform for placing the experimental sample 3. The inner cavity of the risk simulation verification chamber 1 is equipped with a thermal runaway trigger component 7, a temperature detection component 20, and an oxygen concentration sensor 17 corresponding to the experimental sample 3. The temperature acquisition module 4 is connected to the temperature detection component 20. The thermal runaway trigger component 7 includes several heating rods, and the temperature detection component 20 includes several temperature sensors arranged around the experimental sample 3. The oxygen cylinder 14 is connected to the inner cavity of the risk simulation verification chamber 1 via a pipe. A camera 8 corresponding to the experimental sample 3 is connected and installed in the inner cavity of the risk simulation verification chamber 1 via a camera bracket. The camera 8 monitors and records the changes in the experimental sample 3 throughout the process.

[0026] In some embodiments, the thermal runaway control panel 5 can be a button panel or an LCD panel. The operation buttons in the thermal runaway control panel 5 include heating, cooling and switching. The thermal runaway control panel 5 is electrically connected to the thermal runaway triggering component 7.

[0027] In some embodiments, a pressure sensor 11 is provided in the inner cavity of the risk simulation verification chamber 1 corresponding to the experimental sample 3 (the pressure sensor 11 is used to monitor the pressure inside the chamber of the risk simulation verification chamber 1). The risk simulation verification chamber 1 is connected to a vacuum pump (the vacuum pump is used to evacuate the risk simulation verification chamber 1 to form a low pressure or negative pressure) and a pressurization pump (the pressurization pump is used to pressurize the risk simulation verification chamber 1) that communicate with the inner cavity of the risk simulation verification chamber 1. A humidity sensor is provided in the inner cavity of the risk simulation verification chamber 1 corresponding to the experimental sample 3 (the humidity sensor is used to monitor the humidity data inside the risk simulation verification chamber 1). The risk simulation verification chamber 1 is connected to a circulation duct that communicates with the inner cavity of the risk simulation verification chamber 1. A circulation fan, a humidifier (the humidifier is used to humidify the internal environment of the risk simulation verification chamber 1 to increase its internal humidity) and a dehumidifier (the dehumidifier is used to remove the internal humidity of the risk simulation verification chamber 1 to reduce the humidity; the dehumidifier preferably uses a silicon controlled rectifier to control the heating power to reduce the ambient humidity) are installed on the circulation duct.

[0028] In some embodiments, a lifting support 2 is installed at the bottom of the lifting platform. The lifting support 2 can be an electric lifting support for easy lifting operations. The risk simulation verification box 1 (preferably, the risk simulation verification box 1 can be made of transparent tempered glass) is provided with an observation window (the observation window is transparent tempered glass, through which changes inside the risk simulation verification box 1 can be observed) and an exhaust fan (the exhaust fan is used for exhaust treatment after the experiment). The inner cavity of the risk simulation verification box 1 is provided with a light corresponding to the experimental sample 3. The thermal runaway triggering component 7 also includes an igniter, which can directly ignite the experimental sample 3 to observe the combustion of the experimental sample 3 and the combustion after changes in environmental parameter data.

[0029] In some embodiments, a pressure reducing valve 15 and a gas flow meter 16 are installed on the pipeline between the oxygen cylinder 14 and the risk simulation verification box 1, and a vacuum blind flange C18 is installed on the pipeline between the oxygen cylinder 14 and the risk simulation verification box 1. A protective pipeline B is provided between the temperature acquisition module 4 and the risk simulation verification box 1, and the connection between the protective pipeline B and the risk simulation verification box 1 is sealed by a vacuum blind flange B13. The temperature acquisition module 4 and the temperature detection component 20 are connected by a line passing through the protective pipeline B. A protective pipeline A is provided between the thermal runaway adjustment panel 5 and the risk simulation verification box 1, and the connection between the protective pipeline A and the risk simulation verification box 1 is sealed by a vacuum blind flange A6. The thermal runaway adjustment panel 5 and the thermal runaway trigger component 7 are connected by a line passing through the protective pipeline A. The line located inside the risk simulation verification box 1 is positioned and fixed by a line fixing buckle 10.

[0030] In some embodiments, the oxygen concentration sensor 17 is connected to the inner cavity of the risk simulation verification chamber 1 via a pipe with a vacuum blind flange D19. The top of the risk simulation verification chamber 1 is also connected to a pressure equalization port 9 (which can be opened to quickly release pressure when the pressure sensor detects that the ultimate pressure has been reached) and a manual vent port 12 (which can be opened for emergency venting).

[0031] Example 2

[0032] Compared to Embodiment 1, this embodiment establishes an integrated multi-parameter coupling control system to facilitate centralized parameter input, setting, and adjustment. This embodiment also includes a multi-parameter coupling control system for inputting and setting environmental parameter data. The system provides a display screen for parameter input and adjustment, integrating the setting and adjustment of various environmental parameter data, including oxygen concentration, pressure, temperature, and humidity. The multi-parameter coupling control system is communicatively connected to the thermal runaway control panel 5, temperature acquisition module 4, oxygen concentration sensor 17, pressure reducing valve 15, and gas flow meter 16. Internally, the multi-parameter coupling control system includes a gas concentration control module, a temperature control module, a pressure control module, and a humidity control module. The gas concentration control module sets the gas concentration or gas concentration change curve within the risk simulation verification chamber 1. It controls the opening and closing of the pressure reducing valve 15 and / or the flow rate, and monitors and provides feedback on the gas concentration through the oxygen concentration sensor 17, ensuring that the gas concentration environment within the risk simulation verification chamber 1 reaches the set gas concentration or changes according to the set gas concentration change curve. The temperature control module is used to set the temperature value or temperature change curve of the inner cavity of the risk simulation verification chamber 1, so that the temperature environment of the inner cavity of the risk simulation verification chamber 1 reaches the set temperature value or changes according to the set temperature change curve. The thermal runaway adjustment panel 5 controls the heating rod switch and / or heating power in the thermal runaway trigger component 7 and performs temperature monitoring and feedback through the temperature acquisition module 4 and the temperature detection component 20.

[0033] The pressure control module is used to set the pressure value or pressure change curve of the inner cavity of the risk simulation verification chamber 1. The pressure control module controls the operation of the vacuum pump and / or the pressurizing pump and monitors the temperature feedback through the pressure sensor 11, so that the pressure environment inside the chamber of the risk simulation verification chamber 1 reaches the set pressure value or changes according to the set pressure change curve. The risk simulation verification chamber 1 is connected to a circulating air duct that communicates with the inner cavity of the chamber. The circulating air duct is equipped with a circulating fan (the circulating air duct serves to circulate the air inside the chamber of the risk simulation verification chamber 1, and the circulating fan provides power for the circulating air), a humidifier (the humidifier is used to humidify the internal environment of the risk simulation verification chamber 1 to increase its internal humidity), and a dehumidifier (the dehumidifier is used to remove the internal humidity of the risk simulation verification chamber 1 to reduce the humidity; the dehumidifier preferably uses a silicon controlled rectifier to control the heating power to reduce the ambient humidity). The humidity control module is used to set the humidity value or humidity change curve of the inner cavity of the risk simulation verification chamber 1. The humidity control module controls the operation of the humidifier and / or the dehumidifier and monitors the humidity through a humidity sensor to ensure that the humidity environment inside the chamber of the risk simulation verification chamber 1 reaches the set humidity value or changes according to the set humidity change curve. The multi-parameter coupling control system is connected to the camera 8. The camera 8 synchronously and in real time acquires monitoring images of the changes in the experimental sample 3 and transmits them to the multi-parameter coupling control system. The camera 8 monitors and records the changes in the experimental sample 3 throughout the process.

[0034] Example 3

[0035] A method for verifying aviation incidents involving dangerous goods using a dangerous goods risk verification device, wherein the method utilizes the dangerous goods risk verification device of Embodiment 2, and the method includes:

[0036] S1. Collect environmental parameter data from the cargo hold or passenger cabin of a historical aircraft at the study altitude. This data includes oxygen concentration, pressure, temperature, and humidity. Place experimental sample 3 on the lifting platform and adjust the positions of the platform and camera 8. Set the pre-reach environmental parameter data (including oxygen concentration, pressure, temperature, and humidity) through a multi-parameter coupling control system. The gas concentration control module, temperature control module, pressure control module, and humidity control module of the multi-parameter coupling control system synchronously control the operation to ensure the internal environment of the risk simulation verification chamber 1 reaches the pre-reach environmental parameter data. Monitor and record images of experimental sample 3 in real time using camera 8, while simultaneously collecting and recording the current environmental parameter data.

[0037] S2. Adjust one or more combined parameters in the environmental parameter data, and monitor and record the image of experimental sample 3 in real time through camera 8, while simultaneously collecting and recording the current environmental parameter data. Under different experimental verifications of one or more combined parameters, the experimental verification ends and the environmental parameters are recorded when camera 8 observes thermal runaway or fire events in experimental sample 3. Multiple combined parameters can be used in an orthogonal experimental scheme (where experimental sample 3 can also be combined in different ways, such as single or multiple combinations in heat packs, foam boxes, and medicines). An example of an orthogonal experimental scheme is shown in Table 1:

[0038] Table 1 Orthogonal Experiment Scheme Table

[0039]

[0040]

[0041] The experimental results showed that fire and smoke occurred in Experiment 6. After analyzing the results of the orthogonal experiment (as shown in Table 2), it was found that the sample state was related to the environmental parameters. However, the combination of foam box, foam box and medicine was not significantly affected by the environment. The combination of heat patch, medicine and foam box was most affected by the environment. The influencing factors, from largest to smallest, were oxygen concentration > pressure > temperature > humidity. It was preliminarily determined that when the oxygen concentration reached a certain level, the internal temperature of the sample rose rapidly, causing the medicine to react and ultimately leading to the incident.

[0042] S3. Change the research height layer and repeat methods S1 and S2.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An apparatus for verifying the risks of air transport of dangerous goods, comprising experimental samples, characterized in that: It also includes a risk simulation verification chamber and an oxygen cylinder. The inner cavity of the risk simulation verification chamber is equipped with a lifting platform for placing experimental samples. The inner cavity of the risk simulation verification chamber is equipped with a thermal runaway triggering component, a temperature detection component, and an oxygen concentration sensor corresponding to the experimental samples. The thermal runaway triggering component includes several heating rods, and the temperature detection component includes several temperature sensors arranged around the experimental samples. The oxygen cylinder is connected to the inner cavity of the risk simulation verification chamber through a pipe. The inner cavity of the risk simulation verification chamber is connected to and equipped with a camera corresponding to the experimental samples through a camera bracket.

2. The apparatus for risk verification in the air transport of dangerous goods according to claim 1, characterized in that: The risk simulation verification chamber is equipped with a pressure sensor corresponding to the experimental sample in its inner cavity. The risk simulation verification chamber is connected to a vacuum pump and a pressure pump that are in communication with the inner cavity of the risk simulation verification chamber.

3. The apparatus for risk verification in the air transport of dangerous goods according to claim 1, characterized in that: The risk simulation verification box has a humidity sensor installed in the inner cavity corresponding to the experimental sample. The risk simulation verification box is connected to a circulating air duct that communicates with the inner cavity of the risk simulation verification box. A circulating fan, a humidifier and a dehumidifier are installed on the circulating air duct.

4. The apparatus for risk verification in the air transport of dangerous goods according to claim 1, characterized in that: A pressure reducing valve and a gas flow meter are installed on the pipeline between the oxygen cylinder and the risk simulation verification box, and a vacuum blind flange C is installed on the pipeline between the oxygen cylinder and the risk simulation verification box.

5. The apparatus for risk verification of dangerous goods air transport according to claim 1, characterized in that: It also includes a thermal runaway control panel, which is electrically connected to the thermal runaway triggering component.

6. The apparatus for risk verification in the air transport of dangerous goods according to claim 1, characterized in that: It also includes a temperature acquisition module, which is connected to the temperature detection component.

7. The apparatus for risk verification in the air transport of dangerous goods according to claim 1, characterized in that: The lifting platform is equipped with a lifting bracket at its bottom; the risk simulation verification box is equipped with an observation window and an exhaust fan; the inner cavity of the risk simulation verification box is equipped with a lighting lamp corresponding to the experimental sample; and the thermal runaway triggering component also includes an igniter.

8. The apparatus for risk verification in the air transport of dangerous goods according to claim 6, characterized in that: A protective pipe B is provided between the temperature acquisition module and the risk simulation verification box. The protective pipe B is sealed to the risk simulation verification box by a vacuum blind flange B. The temperature acquisition module and the temperature detection component are connected by a line passing through the protective pipe B.

9. The apparatus for risk verification in the air transport of dangerous goods according to claim 5, characterized in that: A protective pipe A is provided between the thermal runaway adjustment panel and the risk simulation verification box. The connection between the protective pipe A and the risk simulation verification box is sealed by a vacuum blind flange A. The thermal runaway adjustment panel and the thermal runaway triggering component are connected by a line passing through the protective pipe A. The line located inside the risk simulation verification box is fixed by a line fixing buckle.

10. The apparatus for risk verification in the air transport of dangerous goods according to claim 1, characterized in that: The oxygen concentration sensor is connected to the inner cavity of the risk simulation verification chamber via a pipe with a vacuum blind flange D; the top of the risk simulation verification chamber is also connected to a pressure balance port and a manual exhaust port.

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