CN112798291A - Hydrogen leakage simulation system and method - Google Patents
Hydrogen leakage simulation system and method Download PDFInfo
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- CN112798291A CN112798291A CN201911107012.3A CN201911107012A CN112798291A CN 112798291 A CN112798291 A CN 112798291A CN 201911107012 A CN201911107012 A CN 201911107012A CN 112798291 A CN112798291 A CN 112798291A
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- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Abstract
The application relates to a hydrogen leakage simulation system and a hydrogen leakage simulation method. The hydrogen leakage simulation system includes: the device comprises a high-pressure hydrogen storage device, a high-pressure hydrogen conveying device, a hydrogen leakage generating device, a visual protective box, a parameter acquiring device and a control device. And the high-pressure hydrogen conveying device is connected with the high-pressure hydrogen storage device through a conveying pipeline. The hydrogen leakage generating device is connected with the high-pressure hydrogen conveying device through a conveying pipeline. The visual protective box is provided with an opening and an accommodating cavity. The hydrogen leakage generating device is arranged in the accommodating cavity of the visual protection box. The parameter acquisition device is arranged on the outer side of the containing cavity of the visual protective box and the outer side of the visual protective box. The control device is respectively connected with the hydrogen leakage generating device and the parameter acquiring device. The hydrogen leakage simulation system is used for simulating the processes of hydrogen energy leakage, diffusion, ignition, combustion, spreading and explosion, and can acquire data of various sensors in real time in the process for subsequent experimental analysis.
Description
Technical Field
The application relates to the technical field of new energy vehicles, in particular to a hydrogen leakage simulation system and method.
Background
The new energy automobile has little influence on the environment and has good development prospect. A fuel cell vehicle using a hydrogen energy fuel cell as an energy source is exemplified: in order to meet the safe and stable operation of the automobile under different operation conditions, the tightness of the hydrogen storage and supply pipeline needs to be ensured, and the dangerous conditions of hydrogen leakage and even hydrogen jet flow can not occur. When high-pressure hydrogen leaks from the pipeline joint, the high-pressure hydrogen can gather in the area around the pipeline and form flammable steam cloud with air, and if the steam cloud cannot be diffused rapidly, fire and explosion can be caused. Because hydrogen has the characteristics of easy leakage, wide combustion range (4% -75%) and explosion limit (11% -59%) and extremely low point activity energy (0.018mJ), the safety of the hydrogen energy fuel cell is one of the bottlenecks of popularization and is always a hot problem of international research.
Disclosure of Invention
Therefore, it is necessary to provide a hydrogen leakage simulation system and method aiming at the characteristics of easy leakage, wide combustion range and explosion limit and extremely low ignition energy of hydrogen energy, so as to provide experimental reference for the safety popularization of hydrogen energy fuel cells.
The application provides a hydrogen leakage simulation system, includes:
the high-pressure hydrogen storage device is used for storing hydrogen;
the high-pressure hydrogen conveying device is connected with the high-pressure hydrogen storage device through a conveying pipeline;
the hydrogen leakage generating device is connected with the high-pressure hydrogen conveying device through a conveying pipeline;
the hydrogen leakage generation device comprises a visual protective box, a hydrogen leakage detection device and a hydrogen leakage detection device, wherein the visual protective box is provided with an opening and an accommodating cavity;
the parameter acquisition device is arranged in the accommodating cavity of the visual protective box and the outer side of the visual protective box; and
and the control device is respectively connected with the hydrogen leakage generating device and the parameter acquiring device.
In one embodiment, the parameter acquiring means comprises:
the multiple data collectors are respectively arranged in the accommodating cavity of the visual protective box; and
the image acquisition device is arranged on the outer side of the visual protective box.
In one embodiment, the visual protection box has a quartz glass window, and the image acquirer is arranged outside the quartz glass window and used for acquiring phenomena and state changes in the visual protection box through the quartz glass window.
In one embodiment, the control device comprises:
the upper computer controller is used for generating a control strategy;
the signal generator is connected with the upper computer controller and used for generating synchronous control signals according to the control strategy; and
the active igniter is arranged in the accommodating cavity of the visual protection box, is connected with the signal generator and is used for executing the synchronous control signal.
In one embodiment, the active igniter is a pulse igniter or an electronic high frequency high pressure igniter or the like, for providing the capability of igniting hydrogen.
In one embodiment, the high pressure hydrogen transfer apparatus includes:
the buffer tank is connected with the high-pressure hydrogen storage device through a transmission pipeline and used for storing hydrogen; and
and the electromagnetic valve is arranged on a transmission pipeline between the high-pressure hydrogen storage device and the hydrogen leakage generating device.
In one embodiment, the plurality of data collectors includes:
the at least two pressure detectors are respectively arranged on the surface of the hydrogen leakage generating device and the accommodating cavity of the visual protective box;
the at least two flame detectors are respectively arranged on the surface of the hydrogen leakage generating device and the accommodating cavity of the visual protective box; and
and the at least two temperature detectors are respectively arranged on the surface of the hydrogen leakage generating device and the accommodating cavity of the visual protective box.
In one embodiment, the high pressure hydrogen storage apparatus comprises any one of a horizontal storage tank, a vertical storage tank, or a spherical storage tank.
The application provides a hydrogen leakage simulation method, which is realized by adopting a hydrogen leakage simulation system,
the hydrogen leakage simulation system includes:
the high-pressure hydrogen storage device is used for storing hydrogen;
the high-pressure hydrogen conveying device is connected with the high-pressure hydrogen storage device through a conveying pipeline;
the hydrogen leakage generating device is connected with the high-pressure hydrogen conveying device through a conveying pipeline;
the hydrogen leakage generation device comprises a visual protective box, a hydrogen leakage detection device and a hydrogen leakage detection device, wherein the visual protective box is provided with an opening and an accommodating cavity;
the parameter acquisition device is arranged in the accommodating cavity of the visual protective box and the outer side of the visual protective box; and
the control device is respectively connected with the hydrogen leakage generating device and the parameter acquiring device;
the hydrogen leakage simulation method comprises the following steps:
charging hydrogen stored in the high pressure hydrogen storage device to the high pressure hydrogen transfer device at a first rate;
when the pressure of hydrogen in the high-pressure hydrogen conveying device reaches a first pressure value, cutting off the hydrogen conveying between the high-pressure hydrogen storage device and the high-pressure hydrogen conveying device so as to enable the hydrogen in the high-pressure hydrogen conveying device to be in a stable state;
controlling the parameter acquisition device and the control device to be started so as to enable an electric control module of the hydrogen leakage simulation system to be in a standby working state;
the control device sends out a synchronous control signal, hydrogen is leaked in the visual protective box in a leakage observation experiment, and the synchronous control signal simultaneously enables the parameter acquisition device to start acquiring simulation experiment parameters; in the active ignition experiment, hydrogen is ignited, and the parameter acquisition device is controlled to start acquiring simulation experiment parameters.
In one embodiment, the high pressure hydrogen transfer apparatus includes:
the buffer tank is connected with the high-pressure hydrogen storage device through a transmission pipeline and used for storing hydrogen; and
the electromagnetic valve is arranged on a transmission pipeline between the high-pressure hydrogen storage device and the hydrogen leakage generating device;
the step of cutting off hydrogen transmission between the high-pressure hydrogen storage device and the high-pressure hydrogen transmission device when the pressure of hydrogen in the high-pressure hydrogen transmission device reaches a first pressure value so as to enable the hydrogen in the high-pressure hydrogen transmission device to be in a stable state comprises the following steps:
and detecting the pressure value of the hydrogen in the buffer tank, and closing the electromagnetic valve when the pressure value of the hydrogen in the buffer tank reaches the first pressure value so as to cut off the hydrogen transmission between the high-pressure hydrogen storage device and the high-pressure hydrogen transmission device.
In one embodiment, the parameter acquiring means comprises:
the at least two pressure detectors are respectively arranged on the surface of the hydrogen leakage generating device and the accommodating cavity of the visual protective box;
the at least two flame detectors are respectively arranged on the surface of the hydrogen leakage generating device and the accommodating cavity of the visual protective box;
the at least two temperature detectors are respectively arranged on the surface of the hydrogen leakage generating device and the accommodating cavity of the visual protective box; and
the image acquirer is arranged on the outer side of the visual protective box;
the control device includes:
the upper computer controller is used for generating a control strategy;
the signal generator is connected with the upper computer controller and used for generating and executing synchronous control signals according to the control strategy; and
the active igniter is arranged in the accommodating cavity of the visual protection box, is connected with the signal generator and is used for executing the synchronous control signal;
the control device sends out a synchronous control signal, hydrogen is leaked in the visual protective box in a leakage observation experiment, and the synchronous control signal simultaneously enables the parameter acquisition device to start acquiring simulation experiment parameters; in the active ignition experiment, the steps of igniting hydrogen and controlling the parameter acquisition device to start acquiring simulation experiment parameters comprise:
the upper computer controller sends out a control strategy for igniting hydrogen;
the signal generator generates and executes a synchronous control signal for igniting the hydrogen according to the control strategy for igniting the hydrogen;
the active igniter provides the capability of igniting the leaked hydrogen gas, so that the leaked hydrogen gas is actively ignited in the visual protection box;
the pressure detector, the flame detector and the temperature detector respectively acquire the pressure, the flame size and the temperature of the surface of the hydrogen leakage generating device, the pressure, the flame size and the temperature of a containing cavity of the visual protective box, and the image acquirer acquires the combustion state of leaked hydrogen.
A hydrogen leakage simulation system and method are provided. A hydrogen leakage simulation system includes: the device comprises a high-pressure hydrogen storage device, a high-pressure hydrogen conveying device, a hydrogen leakage generating device, a visual protective box, a parameter acquiring device and a control device. The high-pressure hydrogen storage device is used for storing hydrogen. And the high-pressure hydrogen conveying device is connected with the high-pressure hydrogen storage device through a conveying pipeline. The hydrogen leakage generating device is connected with the high-pressure hydrogen conveying device through a conveying pipeline. The visual protective box is provided with an opening and an accommodating cavity. The hydrogen leakage generating device is arranged in the accommodating cavity of the visual protection box. The parameter acquisition device is arranged on the outer side of the containing cavity of the visual protective box and the outer side of the visual protective box. The control device is respectively connected with the hydrogen leakage generating device and the parameter acquiring device. The hydrogen leakage simulation system is used for simulating the processes of hydrogen energy leakage, diffusion, ignition, combustion, spreading and explosion, and can acquire data of various sensors in real time in the process for subsequent experimental analysis. The hydrogen leakage simulation system and method are beneficial to simulating the harmfulness of the hydrogen energy after leakage, and various obtained data can guide the safe and reasonable arrangement of hydrogen pipelines of the hydrogen energy fuel cell automobile.
Drawings
FIG. 1 is a schematic diagram of a hydrogen leak simulation system provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a hydrogen leak simulation system provided in an embodiment of the present application;
FIG. 3 is a schematic diagram of a hydrogen leak simulation system provided in an embodiment of the present application;
FIG. 4 is a flow chart of a method for hydrogen leak simulation provided in one embodiment of the present application;
fig. 5 is a schematic diagram of experimental results of a hydrogen leakage simulation system provided in an embodiment of the present application.
The reference numbers illustrate:
hydrogen leak simulation system 10
High pressure hydrogen storage device 110
High pressure hydrogen delivery device 120
Buffer tank 121
Hydrogen leakage generating device 130
Visual protective box 140
Pressure probe 211
Flame detector 212
Temperature detector 213
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, a hydrogen leakage simulation system 10 is provided. The hydrogen leak simulation system 10 includes: the system comprises a high-pressure hydrogen storage device 110, a high-pressure hydrogen conveying device 120, a hydrogen leakage generating device 130, a visual protective box 140, a parameter acquiring device 200 and a control device 300.
The high pressure hydrogen storage device 110 is used to store hydrogen gas. The high pressure hydrogen storage apparatus 110 may include a plurality of commercial hydrogen cylinders connected to each other by a pipe. In one embodiment, the high pressure hydrogen storage apparatus 110 comprises any one of a horizontal storage tank, a vertical storage tank, or a spherical storage tank.
The high pressure hydrogen delivery device 120 is connected with the high pressure hydrogen storage device 110 through a transmission pipeline. The high pressure hydrogen transfer device 120 may include a high pressure valve, a buffer tank, a pressure reducing valve, a solenoid valve, a pressure gauge, and the like. The high-pressure hydrogen conveying device 120 can realize a supply pipeline and a control pipeline for conveying hydrogen.
The hydrogen leakage generating device 130 is connected to the high pressure hydrogen delivery device 120 through a delivery line. The hydrogen leak generator 130 may be modified from a hydrogen line to simulate hydrogen leaks in plumbing. For example, the hydrogen leakage generating device 130 may be a leakage after a hydrogen pipe is cracked.
The visualization protective box 140 has an opening and a receiving cavity. The hydrogen leakage generating device 130 is disposed in the accommodating cavity of the visual protection box 140. The visualization protective box 140 may be a rectangular box structure. In one embodiment, a quartz glass viewing window may be mounted on the visualization protective box 140. The opening of the visualization shield 140 can vent excess hydrogen. In one embodiment, the opening of the visualization protective box 140 is disposed upward. The accommodating cavity of the visual protection box 140 is used for accommodating the hydrogen leakage generating device 130 and sensors for monitoring various parameters. The parameter acquiring device 200 is disposed in the accommodating cavity of the visualization protective box 140 and outside the visualization protective box 140. It is understood that the parameter acquisition device 200 may include a variety of sensors for parameter monitoring. The parameter acquiring apparatus 200 may be disposed at a plurality of different locations for monitoring parameter changes at different locations. The parameter acquiring device 200 can acquire signals of temperature, pressure and the like in the visual protective box 140 in real time.
The control device 300 is connected to the hydrogen leakage generation device 130 and the parameter acquisition device 200, respectively. The control device 300 may include an upper computer and a signal generator. The upper computer can be composed of a computer terminal and is used for triggering control. The signal generator is in communication connection with the upper computer and used for receiving the starting control of the upper computer and synchronously triggering downstream equipment.
The hydrogen leakage simulation system 10 provided in the present embodiment includes: the high pressure hydrogen storage device 110, the high pressure hydrogen transportation device 120, the hydrogen leakage generation device 130, the visual protective box 140, the parameter acquisition device 200 and the control device 300. The high-pressure hydrogen storage device 110, the high-pressure hydrogen delivery device 120, the hydrogen leakage generation device 130 and the visual protective box 140 together form a hydrogen energy storage and transmission pipeline. The control device 300 realizes the triggering control of the hydrogen energy leakage. The parameter acquiring device 200 acquires various parameter changes after hydrogen energy leaks. The hydrogen leakage simulation system 10 provided in this embodiment is used for simulating the processes of hydrogen energy leakage, diffusion, ignition, combustion, spreading and explosion, and can acquire data of various sensors in real time in the process for subsequent experimental analysis. The hydrogen leakage simulation system 10 helps to simulate the hazard of hydrogen energy after leakage, and various data obtained by the system can guide the preparation of the hydrogen energy fuel cell.
Referring to fig. 2, in one embodiment, the parameter obtaining apparatus 200 includes: a variety of data collectors 210 and an image acquirer 220.
The multiple data collectors 210 are respectively arranged in the accommodating cavities of the visual protective box 140. The positions of the various data collectors 210 can be adjusted according to a specific experimental process. For example, the various data collectors 210 may be configured as a moveable structure that can be moved within the visualization protective box 140 to effect a change in position.
In particular, the various data collectors 210 may include pressure detectors, flame detectors, temperature detectors, and the like. The pressure detector is used for detecting the change of the hydrogen release pressure. The flame detector is used for detecting the occurrence of hydrogen spontaneous combustion. The temperature detector may be comprised of a temperature sensor for collecting the ambient temperature within the visualization protective box 140.
The image acquirer 220 is disposed outside the visualization protective box 140. The image acquirer 220 may include components such as a camera and a lens light source. The image acquirer 220 is used to observe the process of hydrogen leakage. The image acquirer 220 may include a camera and other necessary components. The camera takes a picture at a fast speed and the transmitted picture is directly transmitted to the control device 300.
In this embodiment, the parameter acquiring device 200 includes the multiple data collectors 210 and the image acquirer 220, and can acquire the parameters of the environment in real time in the process that the hydrogen leakage simulation system 10 is used for simulating hydrogen energy leakage, diffusion, ignition, combustion, spreading and explosion, and is used for subsequent experimental analysis. In one embodiment, the visualization protection box 140 has a quartz glass window, and the image acquirer 220 is disposed outside the quartz glass window and is used for acquiring phenomena and state changes in the visualization protection box 140 through the quartz glass window.
In this embodiment, the image acquirer 220 is disposed outside the quartz glass window, and can clearly shoot the change of parameters in the environment after hydrogen energy leaks.
In one embodiment, the control device 300 includes: a host computer controller 310, a signal generator 320, and an active igniter 330.
The upper computer controller 310 is used to generate a control strategy.
The signal generator 320 is connected to the upper computer controller 310 for generating a synchronous control signal according to the control strategy. And
the active igniter 330 is disposed in the accommodating cavity of the visualization shielding box 140 and connected to the signal generator 320 for executing the synchronization control signal.
In this embodiment, the control device 300 includes the upper computer controller 310, the signal generator 320, and the active igniter 330. The hydrogen leakage simulation system 10 can realize intelligent control more conveniently, and avoids injury to experimenters in the hydrogen leakage experiment process.
In one embodiment, the active igniter 330 is a pulse igniter or an electronic high frequency high voltage igniter or the like for emitting successive ignition pulses, the electrical spark in the ignition pulses igniting the leaked hydrogen. The pulse igniter or the electronic high-frequency high-voltage igniter in the embodiment can conveniently realize the ignition of the leaked hydrogen.
In one embodiment, the high pressure hydrogen transfer device 120 includes: a surge tank 121 and a solenoid valve 122.
The buffer tank 121 is connected to the high-pressure hydrogen storage device 110 through a transmission line, and is used for storing hydrogen. The pre-leaked hydrogen is firstly introduced into the buffer tank 121, and the hydrogen in the buffer tank 121 is leaked outwards, so that the method is safe. In one embodiment, the buffer tank 121 may be any one of a horizontal tank, a vertical tank, or a spherical tank. Generally, the volume of the buffer tank 121 is smaller than the volume of the high pressure hydrogen storage device 110.
The solenoid valve 122 is disposed in a transfer line between the high-pressure hydrogen storage apparatus 110 and the hydrogen leakage generating apparatus 130.
In this embodiment, the arrangement of the buffer tank 121 and the electromagnetic valve 122 makes the hydrogen leakage simulation system 10 more intelligent, and avoids the damage of the hydrogen leakage simulation system 10 to the experimenters.
In one embodiment, the plurality of data collectors 210 includes: at least two pressure detectors 211, at least two flame detectors 212 and at least two temperature detectors 213.
The at least two pressure detectors 211 are respectively disposed on the surface of the hydrogen leakage generating device 130 and the accommodating cavity of the visual protection box 140.
The at least two flame detectors 212 are respectively disposed on the surface of the hydrogen leakage generating device 130 and the accommodating cavity of the visual protection box 140.
The at least two temperature detectors 213 are respectively disposed on the surface of the hydrogen leakage generating device 130 and the accommodating cavity of the visual protection box 140.
In this embodiment, the various data collectors 210 may further include other sensors or monitors. For example, the various data collectors 210 may also include a gas concentration detection sensor. The method is used for acquiring more experimental parameters and is used for reference of reasonable arrangement of the fuel cell automobile pipeline at the back.
In one embodiment, please refer to fig. 3 for a detailed structure of the hydrogen leakage simulation system 10. The output end of the hydrogen pipeline of the high-pressure hydrogen storage device 110 is connected with the input end of the pipeline of the high-pressure hydrogen conveying device 120. The output end of the high pressure hydrogen delivery device 120 is directly connected to the input end of the hydrogen leakage generation device 130. The control end of the electromagnetic valve 122 of the high-pressure hydrogen conveying device 120 is connected with the signal generator 320. One end of the visual protection box 140 is sleeved on the periphery of the hydrogen leakage generation device 130 and is connected with the hydrogen leakage generation device by using a sealing device. The other end of the visualization protective box 130 is in direct communication with the environment. The visualization protective box 140 is fixed using a bracket.
The image acquirer 220 is located at two sides of the visual protection box 140, passes through a quartz glass observation window of the visual protection box 140, and the signal output end of the image acquirer is connected with the upper controller 310. The signal trigger terminal of the image acquirer 220 is connected to the signal generator 320. The pressure detector 211 may be plural. The input end of the pressure detector 211 can be respectively arranged in the high-pressure hydrogen delivery device 120, the surface of the hydrogen leakage generation device 130 and the inner side of the visual protection box 140. The signal output end of the pressure detector 211 is connected with the data collector 210. The input of the flame detector 212 is placed on the surface of the signal generator 320 and inside the visualization protection box 140. The signal output end of the flame detector 212 is connected with the data collector 210. The temperature detector 213 may include a plurality of detectors. The input terminals of the temperature detector 213 may be disposed in the high pressure hydrogen delivery device 120, the surface of the hydrogen leakage generation device 130, and the inside of the visualization shielding box 140, respectively. The signal output end of the temperature detector 213 is connected with the data collector 210. The output end of the active igniter 330 is located inside the visualization prevention box 140 around the hydrogen leakage generation device 130. The input of the active igniter 330 is connected to the signal generator 320. The output end of the signal generator 320 is respectively connected to the solenoid valve 122, the image acquirer 220, and the active igniter 330 of the high pressure hydrogen delivery apparatus 120. The data collector 210 is respectively connected to the pressure detector 211, the flame detector 212, the temperature detector 213 and the signal generator 320. The upper controller 310 is connected to the signal generator and the image acquirer 220.
In this embodiment, the upper computer controller 310, the signal generator 320 and the active igniter 330 are used to control the triggering of the hydrogen energy leakage. The data collector 210, the pressure detector 211, the flame detector 212 and the temperature detector 213 are used for acquiring various parameter changes after hydrogen energy leaks. The hydrogen leakage simulation system 10 provided in this embodiment is used for simulating the processes of hydrogen energy leakage, diffusion, ignition, combustion, spreading and explosion, and can acquire data of various sensors in real time in the process for subsequent experimental analysis. The hydrogen leakage simulation system 10 helps to simulate the hazard of hydrogen energy after leakage, and various data obtained by the system can guide the preparation of the hydrogen energy fuel cell.
Referring to fig. 4, the present application further provides a hydrogen leakage simulation method, which is implemented by using a hydrogen leakage simulation system.
The hydrogen leak simulation system 10 includes the structure described in fig. 1. The hydrogen leakage simulation method comprises the following steps:
s100, filling the hydrogen gas stored in the high pressure hydrogen storage device 110 into the high pressure hydrogen transfer device 120 at a first rate.
S200, when the pressure of the hydrogen in the high pressure hydrogen transportation device 120 reaches a first pressure value, cutting off the hydrogen transportation between the high pressure hydrogen storage device 110 and the high pressure hydrogen transportation device 120, so that the hydrogen in the high pressure hydrogen transportation device 120 is in a stable state.
And S300, controlling the parameter acquisition device 200 and the control device 300 to be started so as to enable an electric control module of the hydrogen leakage simulation system 10 to be in a standby working state.
S400, the control device 300 sends out a synchronization control signal, so that hydrogen leaks in the visual protection box 140 in a leakage observation experiment, and the synchronization control signal simultaneously enables the parameter obtaining device 200 to start obtaining simulation experiment parameters. In the active ignition experiment, hydrogen is ignited, and the parameter acquisition device 200 is controlled to start acquiring simulation experiment parameters.
In this embodiment, the hydrogen leakage simulation method provided in the steps S100 to S400 may be used to simulate hydrogen energy leakage. The specific first rate of hydrogen charging and the specific pressure of the detected hydrogen reaching the first pressure value may be set according to different experimental procedures.
The hydrogen leakage simulation system can also provide another hydrogen leakage simulation method according to the hydrogen leakage simulation system. The hydrogen leak simulation system 10 includes the structure described in fig. 1. The hydrogen leakage simulation method comprises the following steps:
s010, the hydrogen gas stored in the high pressure hydrogen storage device 110 is charged into the high pressure hydrogen transfer device 120 at a second rate.
S020, when the pressure of the hydrogen in the high pressure hydrogen transportation device 120 reaches a second pressure value, cutting off the hydrogen transportation between the high pressure hydrogen storage device 110 and the high pressure hydrogen transportation device 120, so that the hydrogen in the high pressure hydrogen transportation device 120 is in a stable state.
S030, controlling the parameter obtaining device 200 and the control device 300 to be turned on, so that the electronic control module of the hydrogen leakage simulation system 10 is in a standby operating state.
S040, the control device 300 sends out a synchronization control signal, so that the leaked hydrogen gas is actively ignited in the visual protection box 140, and the synchronization control signal simultaneously causes the parameter obtaining device 200 to start obtaining simulation experiment parameters.
In this embodiment, the hydrogen leakage simulation method provided in the steps S010-S040 can be used to simulate active ignition of hydrogen energy. The specific second rate of hydrogen charging and the pressure of the detected hydrogen gas reaching the second pressure value may be set according to different experimental procedures.
In this embodiment, the hydrogen leakage simulation method may be used to simulate the processes of hydrogen energy leakage, active ignition, combustion, spreading, and explosion, and may obtain data of various sensors in real time during the process for subsequent experimental analysis. The hydrogen leakage simulation method simulates various conditions of hydrogen leakage in advance, is beneficial to simulating the harmfulness of hydrogen energy after leakage, and can guide the safe and reasonable arrangement of hydrogen pipelines of a hydrogen energy fuel cell automobile according to various obtained data.
In one embodiment, the high pressure hydrogen transfer device 120 includes: a surge tank 121 and a solenoid valve 122.
The buffer tank 121 is connected to the high-pressure hydrogen storage device 110 through a transmission line, and is used for storing hydrogen. The solenoid valve 122 is disposed in a transfer line between the high-pressure hydrogen storage apparatus 110 and the hydrogen leakage generating apparatus 130.
The step of cutting off the hydrogen gas transmission between the high pressure hydrogen storage device 110 and the high pressure hydrogen transmission device 120 when the hydrogen gas pressure in the high pressure hydrogen transmission device 120 reaches the first pressure value, so that the hydrogen gas in the high pressure hydrogen transmission device 120 is in a stable state, includes:
and detecting the pressure value of the hydrogen in the buffer tank 121, and when the pressure value of the hydrogen in the buffer tank 121 reaches the first pressure value, closing the electromagnetic valve 122 to cut off the hydrogen transmission between the high-pressure hydrogen storage device 110 and the high-pressure hydrogen transmission device 120.
In this embodiment, the first pressure value may be a pressure range that an experimenter wants to know. I.e. the experimenter wants to know the harm that is caused after the hydrogen gas leaks under the first pressure value. The solenoid valve 122 may be directly controlled by the signal generator 320. The volume of the buffer tank 121 is smaller than the volume of the hydrogen tank in the high-pressure hydrogen storage apparatus 110. The solenoid valve 122 may be disposed between the high pressure hydrogen storage apparatus 110 and the buffer tank 121.
In one embodiment, the parameter acquiring apparatus 200 includes: at least two pressure detectors 211, at least two flame detectors 212, at least two temperature detectors 213, and an image acquirer 220.
The at least two pressure detectors 211 are respectively disposed on the surface of the hydrogen leakage generating device 130 and the accommodating cavity of the visual protection box 140. The at least two flame detectors 212 are respectively disposed on the surface of the hydrogen leakage generating device 130 and the accommodating cavity of the visual protection box 140. The above-mentioned
At least two temperature detectors 213 are respectively disposed on the surface of the hydrogen leakage generating device 130 and the accommodating cavity of the visual protection box 140. The image acquirer 220 is disposed outside the visualization protective box 140.
The control device 300 includes: a host computer controller 310, a signal generator 320, and an active igniter 330. The upper computer controller 310 is used to generate a control strategy. The signal generator 320 is connected to the upper computer controller 310 and configured to generate a synchronous control signal according to the control strategy. The active igniter 330 is disposed in the accommodating cavity of the visualization shielding box 140, and is connected to the signal generator 320 for executing the synchronous control signal.
The step of the control device 300 sending a synchronization control signal to make hydrogen gas leak in the visualization protection box 140 and make active ignition in the active ignition experiment, and the step of the synchronization control signal making the parameter obtaining device 200 start to obtain simulation experiment parameters at the same time includes:
the upper computer controller 310 sends out a control strategy for igniting hydrogen;
the signal generator 320 generates and executes a synchronous control signal for igniting hydrogen according to the control strategy for igniting hydrogen.
The active igniter 330 is disposed in the accommodating cavity of the visualization shielding box 140 and connected to the signal generator 320. The active igniter 330 is used to provide the ability to ignite the hydrogen gas.
The pressure detector 211, the flame detector 212 and the temperature detector 213 respectively obtain the pressure, the flame generation or not and the temperature of the surface of the hydrogen leakage generating device 130, and the pressure, the flame generation or not and the temperature of the accommodating cavity of the visual protection box 140, and the image acquirer 220 obtains the combustion state of the leaked hydrogen.
The hydrogen leakage simulation method provided in this embodiment may correspond to the hydrogen leakage simulation system 10 shown in fig. 3. The hydrogen leakage simulation method can be used for simulating the processes of hydrogen energy leakage, diffusion, ignition, combustion, spreading and explosion, and can acquire data of various sensors in real time in the process for subsequent experimental analysis. The hydrogen leakage simulation method simulates various conditions of hydrogen leakage in advance, is beneficial to simulating the harmfulness of hydrogen energy after leakage, and can guide the preparation of the hydrogen energy fuel cell by the obtained various data.
Referring to fig. 5, a partial experimental result obtained by using the hydrogen leakage simulation system 10 and the hydrogen leakage simulation method mentioned in the embodiments of the present application is shown. T1 is the time at which the active igniter 330 is triggered and T2 is the time at which the tested parameters no longer change to severity. The hydrogen leakage simulation method can simulate various different conditions of hydrogen leakage in advance, is beneficial to simulating the harmfulness of the leaked hydrogen energy, and can guide the preparation of the hydrogen energy fuel cell by the obtained various data.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. A hydrogen leakage simulation system, comprising:
a high pressure hydrogen storage device (110) for storing hydrogen gas;
the high-pressure hydrogen conveying device (120) is connected with the high-pressure hydrogen storage device (110) through a conveying pipeline;
the hydrogen leakage generating device (130) is connected with the high-pressure hydrogen conveying device (120) through a conveying pipeline;
a visualization protective box (140) which is provided with an opening and a containing cavity, wherein the hydrogen leakage generating device (130) is arranged in the containing cavity of the visualization protective box (140);
the parameter acquisition device (200) is arranged in the accommodating cavity of the visual protective box (140) and the outer side of the visual protective box (140); and
and the control device (300) is respectively connected with the hydrogen leakage generating device (130) and the parameter acquiring device (200).
2. The hydrogen leakage simulation system according to claim 1, wherein the parameter obtaining means (200) includes:
the multiple data collectors (210) are respectively arranged in the accommodating cavities of the visual protective boxes (140); and
an image acquirer (220) disposed outside the visualization protective box (140).
3. The hydrogen leakage simulation system according to claim 2, wherein the visualization protection box (140) has a quartz glass window, and the image acquirer (220) is disposed outside the quartz glass window for acquiring phenomena and state changes in the visualization protection box (140) through the quartz glass window.
4. The hydrogen leakage simulation system according to claim 1, wherein the control device (300) comprises:
a host computer controller (310) for generating a control strategy;
the signal generator (320) is connected with the upper computer controller (310) and is used for generating and executing synchronous control signals according to the control strategy; and
the active igniter (330) is arranged in the accommodating cavity of the visualization protective box (140) and is connected with the signal generator (320).
5. The hydrogen leak simulation system of claim 4, wherein the active igniter (330) is a pulse igniter or an electronic high frequency high pressure igniter or the like for providing the capability of igniting hydrogen.
6. The hydrogen leakage simulation system according to claim 1, wherein the high pressure hydrogen delivery device (120) comprises:
the buffer tank (121) is connected with the high-pressure hydrogen storage device (110) through a transmission pipeline and used for storing hydrogen; and
and an electromagnetic valve (122) disposed in a transmission line between the high-pressure hydrogen storage device (110) and the hydrogen leakage generation device (130).
7. The hydrogen leak simulation system of claim 1, wherein the plurality of data collectors (210) comprises:
at least two pressure detectors (211) respectively arranged on the surface of the hydrogen leakage generating device (130) and the accommodating cavity of the visual protection box (140);
at least two flame detectors (212) respectively arranged on the surface of the hydrogen leakage generating device (130) and the accommodating cavity of the visual protection box (140); and
at least two temperature detectors (213) respectively arranged on the surface of the hydrogen leakage generating device (130) and the accommodating cavity of the visual protection box (140).
8. The hydrogen leakage simulation system of claim 1, wherein the high pressure hydrogen storage device (110) comprises any one of a horizontal storage tank, a vertical storage tank, or a spherical storage tank.
9. A hydrogen leakage simulation method is characterized in that a hydrogen leakage simulation system is adopted to realize the hydrogen leakage simulation method,
the hydrogen leakage simulation system includes:
a high pressure hydrogen storage device (110) for storing hydrogen gas;
the high-pressure hydrogen conveying device (120) is connected with the high-pressure hydrogen storage device (110) through a conveying pipeline;
the hydrogen leakage generating device (130) is connected with the high-pressure hydrogen conveying device (120) through a conveying pipeline;
a visualization protective box (140) which is provided with an opening and a containing cavity, wherein the hydrogen leakage generating device (130) is arranged in the containing cavity of the visualization protective box (140);
the parameter acquisition device (200) is arranged in the accommodating cavity of the visual protective box (140) and the outer side of the visual protective box (140); and
a control device (300) connected to the hydrogen leakage generation device (130) and the parameter acquisition device (200), respectively;
the hydrogen leakage simulation method comprises the following steps:
charging the high pressure hydrogen transfer device (120) with hydrogen gas stored in the high pressure hydrogen storage device (110) at a first rate;
when the pressure of hydrogen in the high-pressure hydrogen conveying device (120) reaches a first pressure value, cutting off the hydrogen conveying between the high-pressure hydrogen storage device (110) and the high-pressure hydrogen conveying device (120) so as to enable the hydrogen in the high-pressure hydrogen conveying device (120) to be in a stable state;
controlling the parameter acquisition device (200) and the control device (300) to be started so as to enable an electric control module of the hydrogen leakage simulation system (10) to be in a standby working state;
the control device (300) sends out a synchronous control signal, in a leakage observation experiment, hydrogen is leaked in the visual protective box (140), and the synchronous control signal simultaneously enables the parameter acquisition device (200) to start acquiring simulation experiment parameters; in the active ignition experiment, hydrogen is ignited, and the parameter acquisition device (200) is controlled to start acquiring simulation experiment parameters.
10. The hydrogen leakage simulation method according to claim 9, wherein the high-pressure hydrogen delivery device (120) includes:
the buffer tank (121) is connected with the high-pressure hydrogen storage device (110) through a transmission pipeline and used for storing hydrogen; and
a solenoid valve (122) disposed in a transfer line between the high-pressure hydrogen storage device (110) and the hydrogen leakage generation device (130);
the step of cutting off the hydrogen gas transmission between the high pressure hydrogen storage device (110) and the high pressure hydrogen transmission device (120) when the hydrogen gas pressure in the high pressure hydrogen transmission device (120) reaches a first pressure value so as to enable the hydrogen gas in the high pressure hydrogen transmission device (120) to be in a stable state comprises the following steps:
and detecting the pressure value of the hydrogen in the buffer tank (121), and closing the electromagnetic valve (122) when the pressure value of the hydrogen in the buffer tank (121) reaches the first pressure value so as to cut off the hydrogen transmission between the high-pressure hydrogen storage device (110) and the high-pressure hydrogen transmission device (120).
11. The hydrogen leakage simulation method according to claim 10, wherein the parameter acquisition means (200) includes:
at least two pressure detectors (211) respectively arranged on the surface of the hydrogen leakage generating device (130) and the accommodating cavity of the visual protection box (140);
at least two flame detectors (212) respectively arranged on the surface of the hydrogen leakage generating device (130) and the accommodating cavity of the visual protection box (140);
at least two temperature detectors (213) respectively arranged on the surface of the hydrogen leakage generating device (130) and the accommodating cavity of the visual protection box (140); and
an image acquirer (220) disposed outside the visualization protective box (140);
the control device (300) comprises:
a host computer controller (310) for generating a control strategy;
the signal generator (320) is connected with the upper computer controller (310) and is used for generating and executing synchronous control signals according to the control strategy; and
the active igniter (330) is arranged in the accommodating cavity of the visualization protective box (140) and is connected with the signal generator (320);
the control device (300) sends out a synchronous control signal, in a leakage observation experiment, hydrogen is leaked in the visual protective box (140), and the synchronous control signal simultaneously enables the parameter acquisition device (200) to start acquiring simulation experiment parameters; in the active ignition experiment, the steps of igniting hydrogen and controlling the parameter acquisition device (200) to start acquiring simulation experiment parameters comprise:
the upper computer controller (310) sends out a control strategy for igniting hydrogen;
the signal generator (320) generates and executes a synchronous control signal for igniting hydrogen according to the control strategy for igniting hydrogen;
the active igniter (330) provides the ability to ignite the leaked hydrogen gas such that the leaked hydrogen gas actively ignites in the visualization shield (140);
the pressure detector (211), the flame detector (212) and the temperature detector (213) respectively acquire the pressure, the flame size and the temperature of the surface of the hydrogen leakage generating device (130) and the pressure, the flame size and the temperature of a containing cavity of the visual protective box (140), and the image acquirer (220) acquires the combustion state of the leaked hydrogen.
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