Hydrogen leakage detection device for hydrogen energy vehicle

Abstract

The invention discloses a hydrogen energy vehicle hydrogen leakage detection device, and particularly relates to the technical field of new energy automobiles, the hydrogen energy vehicle hydrogen leakage detection device comprises a carriage, a partition plate fixedly mounted on the bottom surface of an inner cavity of the carriage, and a plurality of hydrogen tanks fixed on the bottom surface of the inner cavity of the carriage, the front ends of the plurality of hydrogen tanks are jointly provided with a hydrogen supply pipeline, and the tail end of the hydrogen supply pipeline penetrates through the partition plate; a hydrogen fuel cell reactor fixedly mounted on the bottom wall of the inner cavity of the carriage is arranged at the tail end of the hydrogen supply pipeline, and a detection assembly is mounted at the upper part of the partition plate. According to the hydrogen leakage detection device for the hydrogen energy vehicle, by arranging the front air exhaust assembly and the rear air exhaust assembly which work in a staggered mode, a double-shaft motor can drive a rotating handle to continuously rotate when working, so that the opening and closing states of an air inlet pipeline and an air outlet pipeline are controlled, air in a driving cabin and an air tank cabin is intermittently extracted and detected, and the detection efficiency is improved. The detection range is increased, and the safety of the hydrogen energy vehicle in use is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a hydrogen leakage detection device for hydrogen energy vehicles. 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 pollution-free products. As a new energy source, hydrogen is widely used in aviation, power and locomotive fuel cells. However, hydrogen molecules are very small and are prone to leakage during storage and use. Hydrogen is not conducive to breathing, is colorless and odorless, and cannot be detected by the human nose. Its ignition point is only 585°C. Its content in the air is within the range of 4% to 75%. It will explode when exposed to open flames. Therefore, hydrogen leakage must be monitored during its use.

[0003] Chinese patent document CN211576498U discloses a hydrogen leakage detection device for hydrogen energy vehicles, including: a hydrogen fuel cell reactor, a flow sensor, a monitoring controller, a hydrogen bottle, a hydrogen supply pipeline and a user reminder device; the hydrogen bottle is connected to the hydrogen fuel cell reactor through the hydrogen supply pipeline, and the detection sensor is connected to the hydrogen fuel cell reactor through the flow sensor; the hydrogen bottle is provided with a pressure sensor and a temperature sensor, and the detection controller obtains the detection value according to the obtained pressure and temperature, and compares it with the preset threshold value, and then determines whether there is a hydrogen leak; if there is, a reminder signal is sent to the user reminder device. The technical solution proposed by the invention can effectively detect hydrogen leakage of hydrogen energy vehicles, and timely remind users in the event of hydrogen leakage, thereby improving driving safety, and the device has a long service life, low cost, high reliability, and the monitoring results are not affected by temperature changes.

[0004] However, in actual use, the hydrogen tank and the car cockpit are separated independently, and the device cannot detect hydrogen leaks in the hydrogen tank and the car cockpit of a hydrogen-powered vehicle at the same time. Summary of the invention

[0005] The main purpose of the present invention is to provide a hydrogen leakage detection device for a hydrogen-powered vehicle, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A hydrogen leakage detection device for a hydrogen-powered vehicle, comprising a vehicle compartment; A partition plate fixedly mounted on the bottom surface of the inner cavity of the carriage; A plurality of hydrogen tanks are fixed to the bottom surface of the inner cavity of the carriage, a partition plate is fixed to the bottom wall of the inner cavity of the carriage, a plurality of hydrogen tanks are fixedly installed on the rear side of the bottom wall of the inner cavity of the carriage, and a hydrogen supply pipeline is commonly provided at the front ends of the plurality of hydrogen tanks; The end of the hydrogen supply pipeline passes through the partition plate, and a hydrogen fuel cell reactor fixedly mounted on the bottom wall of the compartment cavity is provided at the end of the hydrogen supply pipeline, and a detection component is installed on the upper part of the partition plate.

[0007] Furthermore, the detection component is composed of a fixed hydrogen detector, a dual-axis motor and two exhaust components.

[0008] Furthermore, the dual-axis motor and the fixed hydrogen detector both pass through the partition plate, and the two air extraction components are distributed on the front and rear sides of the partition plate.

[0009] Furthermore, the air extraction assembly includes a piston cylinder fixedly connected to the surface of the partition plate, an air inlet pipe is provided on the right side of the lower outer surface of the piston cylinder, and an air outlet pipe is provided on the left side of the lower outer surface of the piston cylinder.

[0010] Furthermore, the end of the gas outlet pipe is connected to a fixed hydrogen detector.

[0011] Furthermore, a piston plate is slidably mounted in the middle of the inner cavity of the piston cylinder, a straight rod is fixedly connected to the upper end of the piston plate, a rotating rod is rotatably connected to the upper end of the straight rod, and a rotating handle is rotatably connected to one end of the rotating rod away from the straight rod.

[0012] Furthermore, one end of the rotating handle away from the rotating rod is fixedly connected to the output end of the corresponding side of the dual-axis motor.

[0013] Furthermore, a control tube is provided in the middle of the air inlet pipe and the air outlet pipe, a spring is provided in the left part of the inner cavity of the two control tubes, and a truncated cone-shaped stopper is provided at one end of the two springs.

[0014] Furthermore, the positions of the rotating handles in the two air extraction assemblies located at the front and rear sides of the partition plate are opposite.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The hydrogen leakage detection device for hydrogen-powered vehicles is provided with two front and rear staggered exhaust assemblies, so that the dual-axis motor drives the rotating handle to rotate continuously during operation, and the piston plate is moved up and down by the rotating rod and the straight rod, thereby controlling the opening and closing states of the air inlet and outlet pipes, intermittently extracting the air in the cockpit and the gas tank compartment for detection, thereby increasing the detection range and improving the safety of hydrogen-powered vehicles during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The structure of the interior of the carriage of the present invention is schematically shown. Figure 1 ; Figure 3 The structure of the interior of the carriage of the present invention is schematically shown. Figure 2 ; Figure 4 The structure of the interior of the carriage of the present invention is schematically shown. Figure 3 ; Figure 5 The working state of the vacuum assembly of the present invention is Figure 1 ; Figure 6 The working state of the vacuum assembly of the present invention is Figure 2 ; Figure 7 For the present invention Figure 5 The enlarged view of point A in the middle; Figure 8 For the present invention Figure 6 Enlarged view of point B in the middle.

[0017] In the figure: 1. Carriage; 2. Partition plate; 3. Hydrogen tank; 4. Vacuum assembly; 5. Dual-axis motor; 6. Fixed hydrogen detector; 7. Hydrogen supply pipeline; 8. Hydrogen fuel cell reactor; 41. Piston cylinder; 42. Inlet pipe; 43. Outlet pipe; 44. Control pipe; 45. Piston plate; 46. Straight rod; 47. Rotating rod; 48. Rotating handle; 49. Spring; 410. Stopper. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1 and Figure 2As shown, the present invention provides a technical solution: a hydrogen leakage detection device for a hydrogen vehicle, comprising a carriage 1, a partition plate 2 is fixedly installed on the inner cavity bottom wall of the carriage 1, and the partition plate 2 divides the inner cavity of the carriage 1 into a cockpit and a gas tank compartment distributed front and back, and a plurality of hydrogen tanks 3 are fixedly installed on the rear side of the inner cavity bottom wall of the carriage 1, that is, in the gas tank compartment, and a hydrogen supply pipeline 7 is commonly provided at the front end of the plurality of hydrogen tanks 3, and the end of the hydrogen supply pipeline 7 passes through the partition plate 2, and the end of the hydrogen supply pipeline 7 is provided with a hydrogen fuel cell reactor 8 fixedly installed on the inner cavity bottom wall of the cockpit, and the hydrogen fuel cell reactor 8 is a prior art and is a core component of the hydrogen fuel cell system. When working, the hydrogen fuel cell reactor 8 converts hydrogen and oxygen into electrical energy, water and heat energy through electrochemical reaction. In this process, hydrogen is decomposed into hydrogen ions and electrons by a catalyst at the anode, and the hydrogen ions reach the cathode through the electrolyte membrane, and the electrons form a current through the external circuit. A detection component is installed on the upper part of the partition plate 2, and when working, the detection component can simultaneously detect whether there is hydrogen leakage in the cockpit and the gas tank compartment.

[0020] Specifically, Figure 2 - Figure 4 As shown, the detection component consists of a fixed hydrogen detector 6, a dual-axis motor 5 and two exhaust components 4. The fixed hydrogen detector 6 is a prior art and is a device specifically used to continuously monitor the hydrogen concentration in a specific area. It usually adopts technologies such as electrochemical sensors, catalytic combustion sensors or semiconductor sensors. It can sense the concentration changes of hydrogen in the environment in real time and convert the detected concentration signal into an electrical signal for processing and transmission. When working, the dual-axis motor 5 can drive the exhaust component 4 to work. The dual-axis motor 5 and the fixed hydrogen detector 6 both pass through the partition plate 2, and the dual-axis motor 5 and the fixed hydrogen detector 6 are fixedly connected to the partition plate 2. The two exhaust components 4 are distributed on the front and rear sides of the partition plate 2, and are used to periodically extract air from the cockpit and the gas tank compartment for detection.

[0021] In order to periodically extract the air in the cockpit and gas tank compartment for testing, such as Figure 5 - Figure 8 As shown, the exhaust assembly 4 includes a piston cylinder 41 fixedly connected to the surface of the partition plate 2, an air inlet pipe 42 is provided on the right side of the lower outer surface of the piston cylinder 41, and an air outlet pipe 43 is provided on the left side of the lower outer surface of the piston cylinder 41. The end of the air outlet pipe 43 is connected to the fixed hydrogen detector 6. During operation, the air in the cockpit or the gas tank cabin will enter the lower part of the inner cavity of the piston cylinder 41 through the air inlet pipe 42, and then enter the fixed hydrogen detector 6 through the air outlet pipe 43 for detection.

[0022] Furthermore, a piston plate 45 is slidably installed in the middle of the inner cavity of the piston cylinder 41, and a straight rod 46 is fixedly connected to the upper end of the piston plate 45, and a rotating rod 47 is rotatably connected to the upper end of the straight rod 46. The end of the rotating rod 47 away from the straight rod 46 is rotatably connected to a rotating handle 48, and the end of the rotating handle 48 away from the rotating rod 47 is fixedly connected to the output end of the corresponding side of the dual-axis motor 5. Therefore, when the dual-axis motor 5 is working, it will drive the rotating handle 48 to rotate continuously, and in the process of continuous rotation of the rotating handle 48, it will cause the rotating rod 47 to swing, and then drive the piston plate 45 up and down through the straight rod 46.

[0023] In addition, if Figure 7 and Figure 8 As shown, a control tube 44 is provided in the middle of the air inlet pipe 42 and the air outlet pipe 43, and a spring 49 is provided in the left part of the inner cavity of the two control pipes 44. One end of the two springs 49 is provided with a truncated cone-shaped block 410. In a natural state, the spring 49 will push the block 410 to the right, so that the truncated cone-shaped block 410 abuts against the opening of the corresponding air inlet pipe 42 or the air outlet pipe 43. When the piston plate 45 moves upward, air will be sucked out, and the external air pressure will push the block 410 on the right side (as shown in FIG. Figure 8 ), so that the air inlet pipe 42 is in an open state, and the stopper 410 on the left side blocks the air outlet pipe 43 due to the spring 49, so that the air outlet pipe 43 is in an open state; and when the piston plate 45 moves downward, gas will be discharged, and the stopper 410 on the right side will be pushed to the right when the gas flows, so that the air inlet pipe 42 is in a closed state (such as Figure 7 ), and the airflow will push the block 410 on the left side to the left, so that the gas outlet pipe 43 is in an open state, and the gas will enter the fixed hydrogen detector 6 for detection.

[0024] In addition, the two rotating handles 48 located at the front and rear sides of the partition plate 2 are in opposite positions, so that the air extraction components 4 at the front and rear sides can work simultaneously, and intermittently extract and test the air in the cockpit and the gas tank compartment respectively.

[0025] The working principle of the present invention is as follows: when the dual-axis motor 5 is working, it will drive the rotating handle 48 to rotate continuously, and during the continuous rotation of the rotating handle 48, it will drive the rotating rod 47 to swing, and then drive the piston plate 45 to move up and down through the straight rod 46; When the piston plate 45 moves upward, air will be exhausted, and the external air pressure will push open the block 410 on the right side, so that the air inlet pipe 42 is in an open state, and the block 410 on the left side will block the air outlet pipe 43 due to the spring 49, so that the air outlet pipe 43 is in an open state; and when the piston plate 45 moves downward, air will be discharged, because the gas flow will push the block 410 on the right side to the right, so that the air inlet pipe 42 is in a closed state, and the air flow will push the block 410 on the left side to the left, so that the air outlet pipe 43 is in an open state, and the gas will enter the fixed hydrogen detector 6 for detection; The rotating handles 48 in the two exhaust assemblies 4 on the front and rear sides of the partition plate 2 are in opposite positions, so that the exhaust assemblies 4 on the front and rear sides can work alternately at the same time, and can intermittently extract and test the air in the cockpit and the gas tank compartment respectively.

[0026] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hydrogen leakage detection device for a hydrogen-powered vehicle, comprising a vehicle compartment (1); A partition plate (2) fixedly mounted on the bottom surface of the inner cavity of the carriage (1); A plurality of hydrogen tanks (3) fixed to the bottom surface of the inner cavity of a carriage (1), characterized in that: A partition plate (2) is fixed to the bottom wall of the inner cavity of the carriage (1); a plurality of hydrogen tanks (3) are fixedly mounted on the rear side of the bottom wall of the inner cavity of the carriage (1); and a hydrogen supply pipeline (7) is commonly provided at the front ends of the plurality of hydrogen tanks (3); The end of the hydrogen supply pipeline (7) passes through the partition plate (2), and a hydrogen fuel cell reactor (8) fixedly mounted on the bottom wall of the inner cavity of the vehicle compartment (1) is provided at the end of the hydrogen supply pipeline (7), and a detection component is installed on the upper part of the partition plate (2).

2. A hydrogen leakage detection device for a hydrogen-powered vehicle according to claim 1, characterized in that: The detection component is composed of a fixed hydrogen detector (6), a dual-axis motor (5) and two gas extraction components (4).

3. A hydrogen leakage detection device for a hydrogen-powered vehicle according to claim 2, characterized in that: The dual-axis motor (5) and the fixed hydrogen detector (6) both penetrate the partition plate (2), and the two gas extraction components (4) are distributed on the front and rear sides of the partition plate (2).

4. A hydrogen leakage detection device for a hydrogen-powered vehicle according to claim 3, characterized in that: The air extraction assembly (4) comprises a piston cylinder (41) fixedly connected to the surface of the partition plate (2), an air inlet pipe (42) being provided on the right side of the lower portion of the outer surface of the piston cylinder (41), and an air outlet pipe (43) being provided on the left side of the lower portion of the outer surface of the piston cylinder (41).

5. A hydrogen leakage detection device for a hydrogen-powered vehicle according to claim 4, characterized in that: The end of the gas outlet pipe (43) is connected to a fixed hydrogen detector (6).

6. A hydrogen leakage detection device for a hydrogen-powered vehicle according to claim 5, characterized in that: A piston plate (45) is slidably mounted in the middle of the inner cavity of the piston cylinder (41); a straight rod (46) is fixedly connected to the upper end of the piston plate (45); a rotating rod (47) is rotatably connected to the upper end of the straight rod (46); and a rotating handle (48) is rotatably connected to the end of the rotating rod (47) away from the straight rod (46).

7. A hydrogen leakage detection device for a hydrogen-powered vehicle according to claim 6, characterized in that: One end of the rotating handle (48) away from the rotating rod (47) is fixedly connected to the output end of the corresponding side of the dual-axis motor (5).

8. A hydrogen leakage detection device for a hydrogen-powered vehicle according to claim 6, characterized in that: A control tube (44) is provided in the middle of the air inlet pipe (42) and the air outlet pipe (43), a spring (49) is provided in the left part of the inner cavity of the two control tubes (44), and a truncated cone-shaped stopper (410) is provided at one end of the two springs (49).

9. A hydrogen leakage detection device for a hydrogen-powered vehicle according to claim 8, characterized in that: The positions of the rotating handles (48) in the two air extraction components (4) located at the front and rear sides of the partition plate (2) are opposite.

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