Hydrogen leakage detection method of movable trolley and hydrogen leakage detection trolley

Abstract

The invention discloses a hydrogen leakage detection method of a movable trolley and a hydrogen leakage detection trolley, and the hydrogen leakage detection method comprises the following steps: S1, controlling to introduce air into a cavity in the trolley; s2, the introduced air is controlled to pass through a detonation area of the cavity in the trolley, whether vibration is generated in the cavity or not is detected, and if yes, hydrogen leakage is judged; and if not, judging that the hydrogen is not leaked. According to the hydrogen leakage detection method for the movable trolley, whether hydrogen is contained in air or not is detected by detonating the air and detecting whether explosion occurs or not, hydrogen leakage can be rapidly detected, the position of a leakage point can be provided, a hydrogen leakage fault can be found in time, and hydrogen leakage detection is achieved most rapidly; accidents caused by hydrogen leakage are effectively prevented and reduced, the purpose of safely, efficiently and automatically detecting hydrogen leakage in real time can be achieved, and the requirement of industrial automatic production is met.

Description

Technical Field

[0001] The invention belongs to the field of hydrogen leakage detection, and in particular relates to a hydrogen leakage detection method of a movable vehicle and a hydrogen leakage detection vehicle. Background Art

[0002] Hydrogen is known as one of the three new energy sources along with solar energy and nuclear energy due to its high combustion efficiency and non-polluting products. As a new energy source, hydrogen is widely used in the fields of aviation and power. At the same time, as a reducing gas and carrier gas, hydrogen has extremely important application value in the fields of chemical industry, electronics, medical treatment, metal smelting, and especially in the field of military defense.

[0003] The existing hydrogen leak detection methods are single, mainly direct detection and indirect detection. The direct detection method is to use a hydrogen concentration sensor, hang the sensor in a confined space and install it on the ceiling near the ventilation outlet or set up a scaffold outdoors above the device to be detected. There are limitations in installation location, fault repair, and regular calibration, and the concentration sensor has a long response time, which is greatly affected by spatial factors, environmental wind force, wind direction and other uncontrollable factors. The indirect detection method mostly uses the pressure sensor in the hydrogen tank to indirectly indicate the leaking gas with the change of pressure, and the response time is longer. Hydrogen leaks quickly and is prone to explosion. The current detection methods cannot meet the requirements of fast and flexible detection, which also limits the development of hydrogen energy.

[0004] The Chinese patent document with application number 202220873697.3 discloses an intelligent hydrogen safety inspection vehicle, including a vehicle body, a hydrogen sensor on the vehicle, which can record the hydrogen concentration in the current area; the vehicle has a buzzer, which can sound an alarm for dangerous areas; the vehicle is provided with a control chip to control the vehicle detection route; the vehicle is also designed with a camera and an infrared tracking sensor to feedback the location of the vehicle and automatically track the vehicle to realize the patrol; the vehicle is also designed with a rotating and telescopic structure under the camera to realize the steering and lifting of the camera and hydrogen sensor to improve the detection sensitivity; the vehicle is also designed with a shock-absorbing structure to make the vehicle driving process more stable. The vehicle can be used for daily dynamic hydrogen safety detection at hydrogen refueling stations to enhance the safety factor of hydrogen refueling stations; it can also be used in dangerous scenarios to detect unknown hydrogen leakage sources and ensure the personal safety of rescue personnel. However, the hydrogen sensor has a long detection response time for hydrogen, which may delay the time for detection and taking measures when hydrogen leaks occur, increasing potential threats.

[0005] The present invention is proposed in view of this. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, and the purpose is to provide a method for detecting hydrogen leakage of a movable vehicle. By controlling the introduction of air into the cavity inside the vehicle, controlling the introduced air to pass through the detonation zone of the cavity inside the vehicle, and detecting whether vibration is generated in the cavity, a method is used to detect whether hydrogen leakage occurs. According to the flammable and explosive characteristics of hydrogen, the hydrogen leakage detection method has the effects of high sensitivity and rapid response.

[0007] Another object of the present invention is to provide a hydrogen leakage detection vehicle.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a hydrogen leakage detection method for a movable vehicle, the hydrogen leakage detection method comprising the following steps:

[0009] S1, control the introduction of air into the cavity inside the car;

[0010] S2. Control the introduced air to pass through the detonation area of ​​the cavity inside the trolley to detect whether vibration is generated in the cavity. If so, it is determined that hydrogen is leaking; if not, it is determined that hydrogen is not leaking.

[0011] Furthermore, in step S2, the introduced air is controlled to pass through the metal mesh with electric sparks in the detonation zone.

[0012] Furthermore, in step S2, the introduced air is controlled to pass through the wire mesh with sparks in the detonation zone, and a vibration sensor under the wire mesh with sparks is used to detect whether vibration is generated.

[0013] Furthermore, in step S2, if hydrogen leaks, the following steps are performed:

[0014] S3, control the car to stop moving, obtain the current location information of the car, and send the location information to the remote terminal.

[0015] Preferably, in step S3, the car captures the scene through a camera and transmits it back to the terminal remotely.

[0016] Furthermore, in step S3, if hydrogen leaks, the introduction of air is stopped and the supply of electricity to the detonation zone is stopped.

[0017] Furthermore, in step S2, if there is no leakage of hydrogen, the following steps are performed:

[0018] S4, exhausting the air introduced into the cavity of the trolley;

[0019] S5. Execute step S1.

[0020] The present invention also provides a hydrogen leakage detection vehicle, which adopts any of the hydrogen leakage detection methods described above.

[0021] Furthermore, the hydrogen leakage detection vehicle comprises:

[0022] The cavity is arranged inside the trolley and has an air inlet and an air outlet;

[0023] an air collecting device, mounted on the trolley and connected to the air inlet of the cavity, for introducing air into the air inlet of the cavity;

[0024] The detonation zone is installed inside the cavity of the trolley and is used to detonate the hydrogen in the air introduced into the cavity inside the trolley;

[0025] The vibration detection device is installed inside the cavity of the trolley and is used to detect whether vibration occurs inside the trolley.

[0026] Further, the detonation zone has a metal mesh with electric sparks, which is installed transversely in the cavity;

[0027] The vibration detection device comprises a vibration sensor installed on the bottom wall of the metal mesh with electric sparks.

[0028] Furthermore, the air collecting device comprises:

[0029] The conduit has one end connected to the air inlet and the other end is a pump suction port, extending to the top of the outside of the trolley, and a pump is installed inside.

[0030] Preferably, it comprises a power supply module, which is arranged on the trolley and is electrically connected to the detonation area and the pump.

[0031] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0032] (1) The present invention designs a hydrogen leakage detection method for a movable vehicle, which detects whether the air contains hydrogen by detonating the air to detect whether an explosion occurs. It can quickly detect hydrogen leakage and provide the location of the leakage point, and can timely discover hydrogen leakage faults, and realize the fastest detection of hydrogen leakage, effectively prevent and reduce accidents caused by hydrogen leakage, and can achieve the purpose of safe, real-time and efficient automatic detection of hydrogen leakage, meeting the needs of industry automated production.

[0033] (2) The present invention designs a hydrogen leak detection vehicle, which detonates the air inside the vehicle to detect whether it contains hydrogen. This can not only accurately and timely detect whether hydrogen has leaked, but also control the explosion caused by the detonation of hydrogen inside the vehicle, avoiding large-scale explosions and ensuring the safety of personnel and on-site equipment.

[0034] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0036] Figure 1 is a flow chart of a hydrogen leakage detection method of the present invention;

[0037] Figure 2 is a flow chart of a hydrogen leakage detection method of the present invention;

[0038] Figure 3 is a flow chart of a hydrogen leakage detection method of the present invention;

[0039] Figure 4 It is a schematic diagram of a hydrogen leakage detection vehicle of the present invention;

[0040] Figure 5 The present invention Figure 4 Top view of the .

[0041] In the figure: 1. Cavity; 11. Air inlet; 12. Air outlet; 2. Air collection device; 21. Pump suction port; 22. Conduit; 23. Pump suction power supply module; 24. Pump suction switch; 3. Wire mesh with electric sparks; 4. Vibration sensor; 5. Power supply module; 6. Camera.

[0042] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0044] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] At present, there are still many technologies that need to be tackled in various technical links of the hydrogen energy industry chain, such as liquid hydrogen storage and transportation, type IV hydrogen storage bottles, large hydrogen refueling stations, fuel cell costs, etc. In addition to these problems, there is another problem that cannot be solved if the hydrogen energy industry cannot be promoted, and that is the issue of safe use of hydrogen. The hydrogen safety issue is the first thing to be faced and solved in the use of hydrogen energy, and it is also the issue that people are most concerned about. It can be said that without reliable hydrogen safety technology as a guarantee, the large-scale and industrialized application of hydrogen energy is out of the question.

[0047] Hydrogen is a flammable and explosive gas. When hydrogen leaks and reaches a certain concentration, once there is a fire source or electric spark to cause ignition, it may cause an explosion, causing casualties and property losses. After hydrogen leaks, due to its lighter-than-air properties, it is easy to spread to the surrounding area. The fire may spread rapidly, increase the difficulty of fire fighting, and cause difficulties for personnel escape and safe rescue.

[0048] like Figures 1 to 3 As shown, the present invention provides a method for detecting hydrogen leakage of a movable vehicle. The method for detecting hydrogen leakage comprises the following steps:

[0049] S1, control the introduction of air into the cavity inside the car;

[0050] S2. Control the introduced air to pass through the detonation area of ​​the cavity inside the trolley to detect whether vibration is generated in the cavity. If so, it is determined that hydrogen is leaking; if not, it is determined that hydrogen is not leaking.

[0051] The present invention can introduce air into the interior of the trolley through a pump, and then control the introduced air to pass through the detonation zone to detect whether the detonation zone vibrates. Since hydrogen is flammable, the content in the air is in the range of 4% to 75%, and it will explode when it encounters an open flame. If the air contains hydrogen, when the air passes through the detonation zone, the hydrogen is ignited, explodes, and vibrates. If the air does not contain hydrogen, when the air passes through the detonation zone, no explosion will occur and no vibration will be generated.

[0052] Hydrogen is a flammable and explosive gas. If hydrogen leaks or accumulates in a closed space, it may cause an explosion or fire. By igniting the air in the car to detect whether it contains hydrogen, potential hydrogen leakage hazards can be discovered in time, so that corresponding measures can be taken to ensure the safety of personnel and the environment. And by igniting the air inside the car, if an explosion occurs, the explosion can be controlled within a certain range to avoid large-scale explosion accidents and ensure the safety of personnel and equipment.

[0053] The present invention designs a hydrogen leakage detection method for a movable vehicle, which detects whether the air contains hydrogen by detonating the air and detecting whether an explosion occurs. The method can quickly detect hydrogen leakage and provide the location of the leakage point, and can timely discover hydrogen leakage faults, realize the detection of hydrogen leakage as quickly as possible, effectively prevent and reduce accidents caused by hydrogen leakage, and achieve the purpose of safe, real-time and efficient automatic detection of hydrogen leakage, meeting the needs of automated production in the industry.

[0054] In step S2, the introduced air is controlled to pass through the metal mesh with sparks in the detonation zone.

[0055] In the present invention, the inhaled air is passed through a metal mesh with electric sparks. Hydrogen has a very low ignition point and explosion limit, and the electric spark can provide enough energy to ignite the hydrogen. Metal has conductive properties. When the metal mesh is charged, the charges can move freely in the metal mesh to form an electric current. When the charges pass through the metal mesh, an electric field is generated. If the charge is large enough, or the voltage is high enough, the electric field strength will be large enough to ionize the molecules in the air, form plasma, and generate sparks. Due to the good conductivity of the metal mesh, the charges can flow freely on the metal mesh, thereby forming an electric current and generating sparks.

[0056] The metal mesh with electric sparks can ignite hydrogen in the air. Since hydrogen is a flammable gas, it can be ignited even at very low levels. This makes the detection method very sensitive to low concentrations of hydrogen and can detect the presence of hydrogen quickly and accurately.

[0057] The metal mesh can be iron wire mesh, copper wire mesh, etc. These metals have high electrical conductivity, can effectively conduct current, have high high temperature resistance, and are not easy to melt or deform.

[0058] If a copper wire mesh with electric sparks is used, copper is an excellent conductive material. Compared with other metals, copper has lower resistance and can conduct current better, so it is more sensitive when detecting hydrogen. Copper has good anti-oxidation properties and is not easy to rust and corrode during long-term use, thus maintaining its good conductivity and detection performance.

[0059] In step S2, the introduced air is controlled to pass through the wire mesh with sparks in the detonation zone, and a vibration sensor under the wire mesh with sparks is used to detect whether vibration is generated on the wire mesh.

[0060] The present invention adopts a wire mesh with electric sparks, and detects whether vibration occurs through a vibration sensor.

[0061] Iron wire is a good conductive material. It can conduct current quickly after being energized, so that electric sparks can be generated more stably and effectively on the iron wire mesh. In addition, the structure of the iron wire mesh is compact, with high tensile strength and impact resistance. It can withstand certain external forces and extrusion, and is not easy to deform and damage. In addition, the use of iron wire mesh can also save costs to a certain extent.

[0062] Vibration sensors are used to detect whether an explosion has occurred in the cavity inside the trolley. If an explosion has occurred, then the air contains hydrogen and a hydrogen leak has occurred. If no explosion has occurred, then the air does not contain hydrogen and no hydrogen leak has occurred.

[0063] In step S2, if hydrogen leaks, the following steps are executed: S3, the trolley is controlled to stop moving, the current position information of the trolley is obtained, and the position information is sent to the remote terminal. Preferably, in step S3, the trolley captures the scene through a camera and transmits it back to the terminal remotely.

[0064] In the present invention, after hydrogen leakage is detected, the car will stay at the location where the hydrogen leakage is detected and send the location information of the car to the terminal. The hydrogen leakage location can be determined by shooting the scene with a camera, or a remote positioning module can be installed on the car to determine the location of the car.

[0065] The trolley stays at the location where the hydrogen leak is detected to provide timely warning, notifying the staff that there is a hydrogen leak or the concentration exceeds the safety standard. In this way, the staff can take appropriate safety measures in time to avoid potential dangers. It also helps to determine the source of the hydrogen leak, and maintenance personnel can more easily locate and repair the leak, thereby reducing further damage and failures.

[0066] The camera used in the present invention captures the scene to determine the location of the hydrogen leakage. The remote transmission module in the camera transmits images in real time, so that real-time monitoring can be provided. Once a hydrogen leak occurs, it can be immediately discovered and corresponding measures can be taken to avoid the danger and loss caused by the leakage accident. The inspection personnel can monitor the scene at any time and anywhere without going to the scene in person. Not only does it improve safety, but it also improves detection efficiency. When a hydrogen leak occurs, the camera picture provides the real situation of the scene environment, and it can be judged whether personnel can approach so that personnel can enter the factory for maintenance.

[0067] The camera can carry a power supply. When a hydrogen leak occurs, the power supply module is cut off and the camera can be powered by the power supply to ensure that the on-site images can be transmitted back to the terminal all the time.

[0068] In step S3, if hydrogen leaks, the introduction of air is stopped and the supply of electricity to the detonation zone is stopped.

[0069] In the present invention, if hydrogen leakage is detected, the trolley stops introducing air containing hydrogen and stops supplying power to the detonation area, so that the wire mesh no longer generates electric sparks.

[0070] Stopping the inhalation of hydrogen-containing air can prevent more hydrogen from participating in the reaction, thereby reducing the scale and intensity of the explosion, preventing the explosion from expanding, and preventing the occurrence of secondary explosions. Once an explosion occurs, it may cause damage to the surrounding environment or equipment, leading to more explosion accidents.

[0071] Stopping the supply of electricity to the detonation area can prevent further explosions and fires, ensuring the safety of personnel and equipment. Electric sparks are caused by the discharge of large amounts of electrical energy, which can cause explosions when they meet flammable gases such as hydrogen. Stopping the generation of electric sparks can cut off the combustion source and reduce the risk of fire.

[0072] In step S2, if there is no leakage of hydrogen, the following steps are performed: S4, exhausting the air introduced into the cavity of the trolley; S5, performing step S1.

[0073] In the present invention, if no vibration is detected, it is determined that the hydrogen has not leaked. If the hydrogen has not leaked, the introduced air is discharged from the trolley through the exhaust port, and then the air is continuously introduced into the cavity of the trolley, and the above steps are repeated for detection.

[0074] like Figures 4 to 5 As shown, the present invention also provides a hydrogen leakage detection vehicle, which adopts the hydrogen leakage detection method described in any one of the above technical solutions.

[0075] The hydrogen leakage detection vehicle of the present invention adopts the hydrogen leakage detection method of the present invention to detect hydrogen leakage. The hydrogen leakage detection vehicle of the present invention reasonably utilizes the explosive property of hydrogen and controls the air inside the cavity 1 of the vehicle to pass through the detonation zone to detect whether vibration is generated to determine whether the air contains hydrogen. Hydrogen leakage can be discovered in a timely and accurate manner, and the hydrogen leakage location can be determined to avoid further accidents.

[0076] The hydrogen leakage detection vehicle comprises: a cavity 1, an air collection device 2, a detonation zone, and a vibration detection device. The cavity 1 is arranged inside the vehicle and has an air inlet 11 and an air outlet 12; the air collection device 2 is installed on the vehicle and communicates with the air inlet 11 of the cavity 1, and is used to introduce air into the air inlet 11 of the cavity 1; the detonation zone is installed inside the cavity 1 of the vehicle and is used to detonate the hydrogen in the air introduced into the cavity 1 inside the vehicle; the vibration detection device is installed inside the cavity 1 of the vehicle and is used to detect whether vibration occurs inside the vehicle.

[0077] In the present invention, the air inlet 11 of the trolley is located at the upper part of the trolley. Hydrogen is a gas lighter than air, and its density is much smaller than that of air. Therefore, if hydrogen leaks, the hydrogen will rise and gather in the uppermost layer of the space. By detecting the air in the uppermost layer of the space, the leakage of hydrogen can be discovered more accurately and timely, and corresponding safety measures can be taken in time to avoid further occurrence of potential dangers and accidents.

[0078] The air outlet 12 can be arranged on the side wall and the bottom wall of the trolley.

[0079] The present invention sets the exhaust port 12 on the lower bottom wall of the trolley. Setting the exhaust port 12 on the lower bottom wall of the trolley can reduce interference factors in the air discharge process, such as wind direction, wind speed, etc. This can improve the detection accuracy and ensure the reliability of the detection result. Because hydrogen is a light gas, it is lighter than air and tends to rise to a higher position in the air. When hydrogen leaks and an explosion occurs inside the cavity 1 of the trolley, the explosion will not be transmitted through the exhaust port 12 on the lower bottom wall.

[0080] The detonation zone has a metal mesh with electric sparks, which is transversely installed in the cavity 1. The vibration detection device includes a vibration sensor 4, which is installed on the bottom wall of the metal mesh with electric sparks.

[0081] The vibration sensor 4 is installed at the lower end of the wire mesh 3 with electric sparks to ensure that when an explosion occurs, the vibration sensor 4 can accurately receive the abnormal vibration signal of the explosion. The vibration sensor 4 can detect the occurrence of the explosion in real time so as to quickly take corresponding measures. This real-time performance can prevent the expansion of the accident or further harm. The vibration sensor 4 can detect tiny vibration signals, can sensitively capture the explosion, and discover problems early.

[0082] When the vibration detected by the vibration sensor 4 reaches a certain value, the power supply module 5 will be cut off and the pump will be turned off. The control trolley will stay at the place where the hydrogen leak is detected, and the pump switch will be turned off to stop inhaling air with hydrogen to prevent subsequent explosion.

[0083] In the present invention, the wire mesh 3 with electric sparks is powered by the power supply module 5. When the power supply module 5 is cut off, the electric sparks on the wire mesh stop being generated. If the air contains hydrogen, after the wire mesh 3 with electric sparks explodes with the hydrogen, continuing to supply power may cause the explosion to continue or expand. Cutting off the power supply can quickly interrupt the current and prevent the spread of the explosion.

[0084] The air collecting device 2 includes: a conduit 22, one end of which is connected to the air inlet 11, and the other end is a pump suction port 21, which extends to the top of the outside of the trolley and is equipped with a pump. Preferably, it includes a power supply module 5, which is arranged on the trolley and is electrically connected to the detonation area and the pump.

[0085] In the present invention, the conduit 22 is extended to the outside air through the air inlet 11, and the outside air is sucked into the trolley cavity 1. The pump is powered by the trolley power supply module 5. The pump suction switch 24 is arranged on the outer surface of the trolley near the power supply module 5.

[0086] The pump is electrically connected to the power supply module 5 via the pump suction power supply module 23. When the power supply module 5 is cut off, the pump stops suctioning immediately.

[0087] The pump can be used to conveniently suck the air to be inspected into the trolley, effectively isolating the air to be inspected from the outside air. When the power supply module 5 is cut off, the pump stops sucking air, preventing the explosion inside the trolley from being transmitted to the outside when hydrogen leaks and detonates the air with hydrogen inside the trolley.

[0088] The duct 22 can absorb air from the upper layer of the space, or from the middle layer or the lower layer of the space.

[0089] Since the density of hydrogen is smaller than that of air, when hydrogen leaks, it will gradually rise to the upper layer of the space. Therefore, choosing the upper layer of air for detection can detect hydrogen leaks more accurately and timely.

[0090] The bottom of the trolley of the present invention is equipped with a pulley, which is powered by the power supply module 5. The trolley can be controlled to travel back and forth along the specified route to achieve cruise detection. The hydrogen leak detection trolley can cruise at different locations and conduct comprehensive detection of hydrogen leaks. Compared with traditional fixed detection equipment, it can cover a wider range and improve detection efficiency. Using the hydrogen leak detection trolley for cruise detection can replace manual inspections one by one, reducing the risk of personnel being directly exposed to potentially dangerous hydrogen leakage environments.

[0091] The camera 6 can be installed in the upper part or the middle part of the car.

[0092] In the present invention, the camera 6 is installed on the upper part of the vehicle, which can provide a wider field of view and monitor hydrogen leakage in a wider range. Moreover, the camera 6 is installed on the upper part to avoid being blocked by other objects and adapt to different environmental changes.

[0093] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A method for detecting hydrogen leakage of a movable vehicle, characterized in that: The hydrogen leakage detection method comprises the following steps: S1, control the introduction of air into the cavity inside the car; S2. Control the introduced air to pass through the detonation area of ​​the cavity inside the trolley to detect whether vibration is generated in the cavity. If so, it is determined that hydrogen is leaking; if not, it is determined that hydrogen is not leaking.

2. A method for detecting hydrogen leakage of a movable vehicle according to claim 1, characterized in that: In step S2, the introduced air is controlled to pass through the metal mesh with sparks in the detonation zone.

3. A method for detecting hydrogen leakage of a movable vehicle according to claim 2, characterized in that: In step S2, the introduced air is controlled to pass through the wire mesh with sparks in the detonation area, and a vibration sensor under the wire mesh with sparks is used to detect whether vibration is generated.

4. A method for detecting hydrogen leakage of a movable vehicle according to any one of claims 2-3, characterized in that: In step S2, if hydrogen leaks, the following steps are performed: S3, control the car to stop moving, obtain the current location information of the car, and send the location information to the remote terminal. Preferably, in step S3, the car captures the scene through a camera and transmits it back to the terminal remotely.

5. A method for detecting hydrogen leakage of a movable vehicle according to any one of claims 2 to 4, characterized in that: In step S3, if hydrogen leaks, the introduction of air is stopped and the supply of electricity to the detonation zone is stopped.

6. A method for detecting hydrogen leakage of a movable vehicle according to any one of claims 1 to 5, characterized in that: In step S2, if there is no leakage of hydrogen, the following steps are performed: S4, exhausting the air introduced into the cavity of the trolley; S5. Execute step S1.

7. A hydrogen leak detection vehicle, characterized in that: The hydrogen leakage detection method according to any one of claims 1 to 6 is adopted.

8. A hydrogen leak detection vehicle according to claim 7, characterized in that: The hydrogen leakage vehicle comprises: The cavity is arranged inside the trolley and has an air inlet and an air outlet; an air collecting device, mounted on the trolley and connected to the air inlet of the cavity, for introducing air into the air inlet of the cavity; The detonation zone is installed inside the cavity of the trolley and is used to detonate the hydrogen in the air introduced into the cavity inside the trolley; The vibration detection device is installed inside the cavity of the trolley and is used to detect whether vibration occurs inside the trolley.

9. A hydrogen leak detection vehicle according to claim 8, characterized in that: The detonation zone has a metal mesh with electric sparks, which is installed transversely in the cavity; The vibration detection device comprises a vibration sensor installed on the bottom wall of the metal mesh with electric sparks.

10. A hydrogen leak detection vehicle according to claim 8, characterized in that: The air collecting device comprises: The conduit has one end connected to the air inlet and the other end is a pump suction port, extending to the top of the outside of the trolley, and a pump is installed inside. Preferably, it comprises a power supply module, which is arranged on the trolley and is electrically connected to the detonation area and the pump.

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