Leakage detection equipment for automobile hydrogen refueling station

Abstract

The invention discloses leakage detection equipment for an automobile hydrogen refueling station, and particularly relates to the technical field of hydrogen leakage detection, the leakage detection equipment comprises a plurality of hydrogen tanks, the front ends of the plurality of hydrogen tanks are jointly provided with a first connecting box, the left end of the first connecting box is provided with a second connecting box, and the left end of the second connecting box is provided with a wind snail alarm. According to the leakage detection equipment for the automobile hydrogen refueling station, by arranging the independent second connecting box, when the fixed hydrogen monitor detects hydrogen leakage, the heating equipment is controlled to start to work to generate heat to increase the temperature in the second connecting box, so that paraffin in the adjusting mechanism is heated to expand, and the hydrogen leakage is detected; therefore, the eccentric distance of the input end of the wind snail alarm is changed to control the rotation speed of the wind snail alarm, the higher the hydrogen leakage degree is, the larger the alarm sound initiated by the wind snail alarm is, and people can judge the severity of hydrogen leakage according to the sound and take targeted measures.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen leakage detection, and in particular to leakage detection equipment used in automobile hydrogen refueling stations. Background Art

[0002] At present, my country is vigorously developing hydrogen fuel vehicles to replace the use of internal combustion and electric drive modes, so as to solve the problems of low work efficiency and serious environmental pollution of internal combustion drive modes, and at the same time solve the problems of long charging time and short working time of electric drive modes. Therefore, hydrogen stations are also built in cities. To ensure the safety of hydrogen stations, each hydrogen station will be equipped with a hydrogen alarm.

[0003] Chinese patent document CN220269136U discloses a hydrogen leakage detection device for a hydrogen filling station, comprising: a main body, including a hydrogen tank and a control console, a connecting pipe being flange-connected on the surface of the hydrogen tank; a first detection mechanism, including a connecting box, the connecting box being fixedly connected to the hydrogen tank and the connecting pipe, a first hydrogen sensor being fixedly connected on the surface of the connecting box, a first connecting line being fixedly connected on the surface of the first hydrogen sensor, and the first connecting line being fixedly connected to the control console. The utility model can guide hydrogen leaking from the connection of the hydrogen tank to the connecting box through the connecting box, the first hydrogen sensor and the first connecting line, as well as the fixed block, the sealing tube, the second hydrogen sensor and the second connecting line, thereby realizing leakage detection of hydrogen in the hydrogen filling station and avoiding the use of a hydrogen concentration sensor. The device has the advantages of long service life, high accuracy and high stability.

[0004] However, in actual use, the device cannot help people judge the severity of hydrogen leakage, making it impossible for users to take targeted measures. Summary of the invention

[0005] The main purpose of the present invention is to provide a leakage detection device for an automobile hydrogen refueling station, which can effectively solve the problems raised in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A leakage detection device for a car hydrogen filling station, comprising a plurality of hydrogen tanks, a first connection box being commonly provided at the front ends of the plurality of hydrogen tanks, a connection pipe being commonly provided at the openings of the plurality of hydrogen tanks, the connection pipe passing through the interior of the first connection box, a hydrogen car being provided at the end of the connection pipe, a second connection box being provided at the left end of the first connection box, and a wind screw alarm being provided at the left end of the second connection box; This embodiment discloses that an exhaust device and a fixed hydrogen gas detector are provided at the rear portion of the bottom wall of the inner cavity of the second connection box, the exhaust device is located on the right side of the fixed hydrogen gas detector, the input end of the exhaust device is connected to the inner cavity of the first connection box, the output end of the exhaust device is connected to the fixed hydrogen gas detector, the discharge end of the fixed hydrogen gas detector is provided with an exhaust pipe running through the second connection box and the first connection box, a motor and a heating device are also provided at the front portion of the bottom wall of the inner cavity of the second connection box, the heating device is located on the left side of the motor, and an adjustment mechanism is provided between the output end of the motor and the input end of the wind screw alarm.

[0007] This embodiment discloses that the input end of the wind screw alarm passes through the outer wall of the second connection box.

[0008] This embodiment discloses that the fixed hydrogen detector is electrically connected to the heating device. When the fixed hydrogen detector detects a hydrogen leakage, the heating device is controlled to start working to generate heat to increase the temperature in the second connection box. When the fixed hydrogen detector detects a higher hydrogen content, the output power of the heating device will be adjusted higher.

[0009] This embodiment discloses that the fixed hydrogen detector is electrically connected to the motor, and when the fixed hydrogen detector detects a hydrogen leak, the motor is controlled to start working.

[0010] This embodiment discloses that the adjustment mechanism includes a rectangular sleeve, wherein one side of the right end of the rectangular sleeve is fixedly connected to the output end of the motor, a first slider is slidably installed on the side of the inner cavity of the rectangular sleeve close to the output end of the motor, a piston cylinder is fixedly installed on the side of the inner cavity of the rectangular sleeve away from the output end of the motor, an end of the first slider close to the piston cylinder is fixedly connected to a guide rod, and an end of the guide rod away from the first slider is fixedly connected to a piston plate.

[0011] This embodiment discloses that the inner cavity of the piston cylinder is filled with paraffin.

[0012] This embodiment discloses that the input end of the wind screw alarm is fixedly connected with a sliding sleeve, the inner surface of the sliding sleeve is slidably mounted with a second sliding block, and the left end of the first sliding block is fixedly connected with a rotating rod.

[0013] This embodiment discloses that the rotating rod is rotationally connected to the second sliding block.

[0014] This embodiment discloses that, in the process that the first slider moves toward the side close to the output end of the motor, the second slider will gradually approach the input end of the wind screw alarm.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The hydrogen leakage detection device for the hydrogen filling station is provided with an independent second connection box. When the fixed hydrogen monitor detects hydrogen leakage, the heating device is controlled to start working to generate heat to increase the temperature in the second connection box. The higher the hydrogen content, the higher the temperature in the second connection box, so that the paraffin in the adjustment mechanism expands due to the heat, thereby changing the positions of the first slider and the second slider. The rotation speed of the wind screw alarm is controlled by changing the eccentric distance of the input end thereof, so that the higher the degree of hydrogen leakage, the louder the alarm sound initiated by the wind screw alarm is, so that people can judge the severity of the hydrogen leakage according to the sound and take targeted measures. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is an internal structure diagram of the first connection box and the second connection box of the present invention; Figure 3 This is a diagram showing the internal structure of the second connection box of the present invention; Figure 4 is a structural relationship diagram of the regulating mechanism of the present invention; Figure 5 The structure of the adjustment mechanism of the present invention is schematically shown in FIG. Figure 1 ; Figure 6 The structure of the adjustment mechanism of the present invention is schematically shown in FIG. Figure 2 ; Figure 7 It is a schematic diagram of the structure inside the piston cylinder of the present invention.

[0017] In the figure: 1. Hydrogen tank; 2. First connecting box; 3. Connecting pipe; 4. Hydrogen vehicle; 5. Second connecting box; 6. Wind screw alarm; 7. Adjusting mechanism; 8. Motor; 9. Heating equipment; 10. Pumping equipment; 11. Fixed hydrogen detector; 12. Exhaust pipe; 71. Sliding sleeve; 72. Second slider; 73. Rectangular sleeve; 74. Piston cylinder; 75. First slider; 76. Guide rod; 77. Piston plate; 78. Rotating rod. 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 - Figure 4As shown, the present invention provides a technical solution: a leakage detection device for a car hydrogen filling station, comprising a plurality of hydrogen tanks 1, a first connection box 2 is commonly provided at the front end of the plurality of hydrogen tanks 1, a connection pipe 3 is also commonly provided at the opening of the plurality of hydrogen tanks 1, the connection pipe 3 passes through the interior of the first connection box 2, the first connection box 2 has a sealing effect, if there is leakage of hydrogen at the opening of the hydrogen tank 1, it will be collected in the first connection box 2, a hydrogen energy vehicle 4 is provided at the end of the connection pipe 3, a second connection box 5 is provided at the left end of the first connection box 2, air detection will be performed inside the second connection box 5 during operation, a wind screw alarm 6 is provided at the left end of the second connection box 5, the wind screw alarm 6 is a prior art, and is a mechanical alarm invented by the principle of generating vibration through motor rotation, the motor provides power to rotate the relevant parts, thereby causing vibration, thereby emitting an alarm sound. In the present invention, the wind screw alarm 6 is in a passive control alarm state, and an alarm sound will be emitted when the input end of the wind screw alarm 6 rotates, and the faster the input end of the wind screw alarm 6 rotates, the louder the alarm sound will be.

[0020] Specifically, an exhaust device 10 and a fixed hydrogen detector 11 are provided at the rear of the bottom wall of the inner cavity of the second connection box 5. The exhaust device 10 is a prior art and can be an air pump or other equipment. The fixed hydrogen detector 11 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, and can sense the concentration changes of hydrogen in the environment in real time, and convert the detected concentration signals into electrical signals for processing and transmission. The exhaust device 10 is located on the right side of the fixed hydrogen detector 11, and the input end of the exhaust device 10 is connected to the inner cavity of the first connection box 2, and the output end of the exhaust device 10 is connected to the fixed hydrogen detector. The detector 11 is turned on, and the discharge end of the fixed hydrogen detector 11 is provided with an exhaust pipe 12 which runs through the second connection box 5 and the first connection box 2. After the fixed hydrogen detector 11 completes the detection, the detected air will be discharged back into the first connection box 2 to balance the air pressure; a motor 8 and a heating device 9 are also provided on the front part of the bottom wall of the inner cavity of the second connection box 5. The heating device 9 is a prior art and can be a controllable electric heating device. The heating device 9 is located on the left side of the motor 8. The input end of the wind screw alarm 6 passes through the outer wall of the second connection box 5. An adjusting mechanism 7 is provided between the output end of the motor 8 and the input end of the wind screw alarm 6. When the motor 8 is working, the wind screw alarm 6 can be driven by the adjusting mechanism 7 to rotate and alarm.

[0021] Furthermore, the fixed hydrogen detector 11 is electrically connected to the heating device 9. When the fixed hydrogen detector 11 detects a hydrogen leakage, it will control the heating device 9 to start working to generate heat to increase the temperature in the second connection box 5. When the fixed hydrogen detector 11 detects that the hydrogen content is higher, the output power of the heating device 9 will be adjusted higher, so that the overall temperature in the second connection box 5 will increase.

[0022] In addition, the fixed hydrogen detector 11 is electrically connected to the motor 8. When the fixed hydrogen detector 11 detects a hydrogen leak, the motor 8 will be controlled to start working. The motor 8 can drive the wind screw alarm 6 to rotate and alarm through the adjustment mechanism 7.

[0023] Specifically, Figure 5 - Figure 7 As shown, the regulating mechanism 7 includes a rectangular sleeve 73, one side of the right end of the rectangular sleeve 73 is fixedly connected to the output end of the motor 8, a first slider 75 is slidably installed on the side of the inner cavity of the rectangular sleeve 73 close to the output end of the motor 8, a piston cylinder 74 is fixedly installed on the side of the inner cavity of the rectangular sleeve 73 away from the output end of the motor 8, a guide rod 76 is fixedly connected to the end of the first slider 75 close to the piston cylinder 74, a piston plate 77 is fixedly connected to the end of the guide rod 76 away from the first slider 75, and the inner cavity of the piston cylinder 74 is filled with paraffin, which is a hydrocarbon mixture extracted from certain distillates of petroleum, shale oil or other asphalt mineral oils, and its main component is solid alkane, which is odorless and tasteless, and is a white or light yellow translucent solid. When paraffin is heated, the thermal motion of the molecules intensifies, the distance between the molecules increases, and the volume expands. On the contrary, when paraffin is cooled, the thermal motion of the molecules slows down, the distance between the molecules decreases, and the volume shrinks.

[0024] Therefore, when the overall temperature in the second connection box 5 rises, the paraffin in the piston cylinder 74 will expand, pushing the piston plate 77 to move with the piston cylinder 74 and the first slider 75 toward the side close to the output end of the motor 8.

[0025] In addition, the input end of the wind screw alarm 6 is fixedly connected with a sliding sleeve 71, and the inner surface of the sliding sleeve 71 is slidably mounted with a second slider 72. The left end of the first slider 75 is fixedly connected with a rotating rod 78, and the rotating rod 78 is rotatably connected to the second slider 72. In the process of the first slider 75 moving toward the side close to the output end of the motor 8, the second slider 72 will gradually approach the input end of the wind screw alarm 6 due to the constraint of the rotating rod 78, and the second slider 72, which originally deviated from the axis of the input end of the wind screw alarm 6, will gradually approach at this time. Therefore, when the motor 8 is working, it will swing with the rectangular sleeve 73. The higher the temperature, the position of the first slider 75 and the second slider 72 will change. The second slider 72, which originally deviated from the axis of the input end of the wind screw alarm 6, will gradually approach at this time, swinging faster with the sliding sleeve 71, so that the input end of the wind screw alarm 6 can rotate faster, and the alarm sound initiated is louder.

[0026] The working principle of the present invention is as follows: when the fixed hydrogen detector 11 detects hydrogen leakage, the hydrogen refueling station uses a hydrogen leakage detection device to control the heating device 9 to start working to generate heat to increase the temperature in the second connection box 5. When the fixed hydrogen detector 11 detects a higher hydrogen content, the output power of the heating device 9 will be adjusted to be higher, so that the overall temperature in the second connection box 5 increases; When the overall temperature in the second connection box 5 rises, the paraffin in the piston cylinder 74 will expand, pushing the piston plate 77 to move the piston cylinder 74 and the first slider 75 toward the side close to the output end of the motor 8; And when the motor 8 is working, it will swing with the rectangular sleeve 73. The higher the temperature, the position of the first slider 75 and the second slider 72 will change. The second slider 72, which originally deviated from the axis of the input end of the wind screw alarm 6, will gradually approach and swing with the sliding sleeve 71 faster, so that the input end of the wind screw alarm 6 can rotate faster and the alarm sound can be louder. Therefore, the higher the degree of hydrogen leakage, the louder the alarm sound initiated by the wind screw alarm 6.

[0027] 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 leak detection device for a vehicle hydrogen refueling station, comprising a plurality of hydrogen tanks (1); A first connection box (2), the first connection box being fixed to the front end of the hydrogen tank (1); The connecting pipe (3) is characterized in that: The connecting pipe (3) is connected to the opening of the hydrogen tank (1), the connecting pipe (3) passes through the interior of the first connecting box (2), a hydrogen vehicle (4) is provided at the end of the connecting pipe (3), a second connecting box (5) is provided at the left end of the first connecting box (2), and a wind screw alarm (6) is provided at the left end of the second connecting box (5).

2. A leak detection device for a vehicle hydrogen refueling station according to claim 2, characterized in that: An exhaust device (10) and a fixed hydrogen detector (11) are provided at the rear of the bottom wall of the inner cavity of the second connection box (5). The exhaust device (10) is located on the right side of the fixed hydrogen detector (11). The input end of the exhaust device (10) is connected to the inner cavity of the first connection box (2). The output end of the exhaust device (10) is connected to the fixed hydrogen detector (11). The discharge end of the fixed hydrogen detector (11) is provided with an exhaust pipe (12) that runs through the second connection box (5) and the first connection box (2). A motor (8) and a heating device (9) are also provided at the front of the bottom wall of the inner cavity of the second connection box (5). The heating device (9) is located on the left side of the motor (8). An adjustment mechanism (7) is provided between the output end of the motor (8) and the input end of the wind screw alarm (6).

3. A leak detection device for a vehicle hydrogen refueling station according to claim 2, characterized in that: The input end of the wind screw alarm (6) passes through the outer wall of the second connection box (5).

4. A leak detection device for a vehicle hydrogen refueling station according to claim 2, characterized in that: The fixed hydrogen detector (11) is electrically connected to the heating device (9). When the fixed hydrogen detector (11) detects a hydrogen leak, it controls the heating device (9) to start working to generate heat to increase the temperature in the second connection box (5). When the fixed hydrogen detector (11) detects a higher hydrogen content, the output power of the heating device (9) will be adjusted higher.

5. The leak detection device for a vehicle hydrogen refueling station according to claim 3, characterized in that: The fixed hydrogen detector (11) is electrically connected to the motor (8), and when the fixed hydrogen detector (11) detects a hydrogen leak, it controls the motor (8) to start working.

6. A leak detection device for a vehicle hydrogen refueling station according to claim 4, characterized in that: The regulating mechanism (7) comprises a rectangular sleeve (73), one side of the right end of the rectangular sleeve (73) is fixedly connected to the output end of the motor (8), a first slider (75) is slidably mounted on a side of the inner cavity of the rectangular sleeve (73) close to the output end of the motor (8), a piston cylinder (74) is fixedly mounted on a side of the inner cavity of the rectangular sleeve (73) away from the output end of the motor (8), one end of the first slider (75) close to the piston cylinder (74) is fixedly connected to a guide rod (76), and one end of the guide rod (76) away from the first slider (75) is fixedly connected to a piston plate (77).

7. A leak detection device for a vehicle hydrogen refueling station according to claim 6, characterized in that: The inner cavity of the piston cylinder (74) is filled with paraffin.

8. The leak detection device for a vehicle hydrogen refueling station according to claim 6, characterized in that: The input end of the wind screw alarm (6) is fixedly connected to a sliding sleeve (71), a second sliding block (72) is slidably mounted on the inner surface of the sliding sleeve (71), and a rotating rod (78) is fixedly connected to the left end of the first sliding block (75).

9. A leak detection device for a vehicle hydrogen refueling station according to claim 8, characterized in that: The rotating rod (78) is rotationally connected to the second sliding block (72).

10. The leak detection device for a vehicle hydrogen refueling station according to claim 8, characterized in that: During the process of the first sliding block (75) moving towards the side close to the output end of the motor (8), the second sliding block (72) gradually approaches the input end of the wind screw alarm (6).

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