CN211576498U - Hydrogen leakage detection device for hydrogen energy vehicle - Google Patents
Hydrogen leakage detection device for hydrogen energy vehicle Download PDFInfo
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- CN211576498U CN211576498U CN201921349605.6U CN201921349605U CN211576498U CN 211576498 U CN211576498 U CN 211576498U CN 201921349605 U CN201921349605 U CN 201921349605U CN 211576498 U CN211576498 U CN 211576498U
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Abstract
The utility model provides a detection device is revealed to hydrogen energy vehicle hydrogen, include: the system comprises a hydrogen fuel cell reactor, a flow sensor, a monitoring controller, a hydrogen bottle, a hydrogen supply pipeline and a user reminding device; the hydrogen bottle is connected with the hydrogen fuel cell reactor through a hydrogen supply pipeline, and the detection sensor is connected with the hydrogen fuel cell reactor through a flow sensor; the hydrogen bottle is provided with a pressure sensor and a temperature sensor, and the detection controller calculates a detection value according to the acquired pressure and temperature, compares the detection value with a preset threshold value and further judges whether hydrogen leakage exists or not; and if so, sending a reminding signal to a user reminding device. The utility model has the advantages that: the utility model provides a technical scheme can effectually detect out the hydrogen that hydrogen can the car and reveal to in time remind the user under the condition that hydrogen can be revealed, improve driving safety, and this device long service life, with low costs, reliability height, and the monitoring result does not receive temperature variation to influence.
Description
Technical Field
The utility model relates to a new energy automobile field especially relates to a detection device is revealed to hydrogen energy vehicle hydrogen.
Background
Hydrogen is called three new energy sources together with solar energy and nuclear energy because of its advantages of high combustion efficiency, no pollution of products and the like. As a new energy source, hydrogen is widely applied in the fields of aviation, power, locomotive fuel cells and the like. However, hydrogen molecules are very small, and are easy to leak in the storage and use processes, and the hydrogen is not beneficial to breathing, is colorless and tasteless, cannot be detected by human nose, has an ignition point of 585 ℃, has an air content of 4-75%, and explodes when encountering open fire, so that the leakage of the hydrogen needs to be monitored in the use process.
At present, hydrogen leakage monitoring mostly adopts a hydrogen concentration sensor, and the problems of poor stability, weak sensitivity and output signals, short service life, high cost and the like exist. And the sensitivity and accuracy of the hydrogen sensor fluctuate greatly along with the temperature change.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a hydrogen leakage detection device for a hydrogen energy vehicle; a hydrogen leakage detection device for a hydrogen-powered vehicle, comprising: the system comprises a hydrogen fuel cell reactor, a flow sensor, a monitoring controller, a hydrogen bottle, a hydrogen supply pipeline and a user reminding device;
the hydrogen supply system comprises a plurality of hydrogen bottles, wherein a sensor and a valve are arranged at a hydrogen outlet of each hydrogen bottle, the hydrogen outlets of the hydrogen bottles are communicated in sequence, and the hydrogen outlet of the first hydrogen bottle is connected to the hydrogen fuel cell reactor through a hydrogen supply pipeline so as to supply hydrogen to the hydrogen fuel cell reactor;
the valves are electric control valves, and the control end of each valve of each hydrogen bottle is electrically connected with the output end of the monitoring controller so as to control the valve of each hydrogen bottle through the monitoring controller; the sensor of each hydrogen bottle is respectively and electrically connected with the input end of the monitoring controller so as to send the hydrogen pressure value and the hydrogen temperature value detected by the sensor in each hydrogen bottle to the monitoring controller; wherein the sensor comprises: the pressure sensor is used for detecting the pressure value of the hydrogen; the temperature sensor is used for detecting the hydrogen temperature value;
one input end of the monitoring controller is electrically connected with the hydrogen fuel cell reactor through a flow sensor so as to obtain the water quantity generated by chemical reaction in the hydrogen fuel cell reactor and detected by the flow sensor in real time;
one output end of the monitoring controller is electrically connected with the user reminding device so as to send a reminding signal to the user reminding device.
Furthermore, the user reminding device is arranged in the cab, so that the function of reminding the user in the vehicle to the greatest extent is achieved.
Further, the user reminding device is a loudspeaker, a display screen or a buzzer.
Furthermore, after the user reminding device receives the reminding signal of the monitoring controller, the user in the vehicle is reminded through voice, screen symbols or warning sounds.
Further, the monitoring controller is a single chip microcomputer or a computer.
The utility model provides a beneficial effect that technical scheme brought is: the utility model provides a technical scheme can effectually detect out the hydrogen that hydrogen can the car and reveal to in time remind the user under the condition that hydrogen can be revealed, improve driving safety, and this device long service life, with low costs, reliability height, and the monitoring result does not receive temperature variation to influence.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a diagram of a hydrogen leakage detection device for a hydrogen energy vehicle according to an embodiment of the present invention;
fig. 2 is a detection schematic diagram of the hydrogen leakage detection device for the hydrogen energy vehicle in the embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the utility model provides a detection device is revealed to hydrogen energy vehicle hydrogen.
Referring to fig. 1, fig. 1 is a diagram of an apparatus for detecting hydrogen leakage of a hydrogen energy vehicle according to an embodiment of the present invention, including: the system comprises a hydrogen fuel cell reactor 1, a flow sensor 2, a monitoring controller 3, a hydrogen bottle 4, a hydrogen supply pipeline 5 and a user reminding device 6;
the hydrogen bottles 4 are provided with a plurality of hydrogen outlets, a sensor 41 and a valve 42 are arranged at the hydrogen outlet of each hydrogen bottle 4, the hydrogen outlets of the hydrogen bottles 4 are sequentially communicated, and the hydrogen outlet of the first hydrogen bottle 4 is connected to the hydrogen fuel cell reactor 1 through a hydrogen supply pipeline 5 so as to provide hydrogen for the hydrogen fuel cell reactor 1; here, the sequential turn-on is exemplified by:
if there are four hydrogen bottles in total, starting from the last hydrogen bottle, connecting the hydrogen outlet of the next hydrogen bottle with the hydrogen outlet of the previous hydrogen bottle in sequence until the first hydrogen bottle, and then connecting the hydrogen outlet of the first hydrogen bottle to the hydrogen fuel cell reactor 1 again to enable the hydrogen in each hydrogen bottle to be conveyed to the hydrogen fuel cell reactor 1;
the valves 42 are electrically controlled valves, and the control end of the valve 42 of each hydrogen bottle 4 is electrically connected with the output end of the monitoring controller 3, so that the valve 42 of each hydrogen bottle 4 is controlled by the monitoring controller 3; the pressure sensor 41 of each hydrogen bottle 4 is electrically connected with the input end of the monitoring controller 3 respectively so as to send the hydrogen pressure value and the hydrogen temperature value detected by the sensor 41 in each hydrogen bottle 4 to the monitoring controller 3; wherein the sensor 41 includes: the pressure sensor is used for detecting the pressure value of the hydrogen; the temperature sensor is used for detecting the hydrogen temperature value;
one input end of the monitoring controller 3 is electrically connected with the hydrogen fuel cell reactor 1 through a flow sensor 2 so as to obtain the water amount generated by the chemical reaction in the hydrogen fuel cell reactor 1, which is detected by the flow sensor 2, in real time;
one output end of the monitoring controller 3 is electrically connected with the user reminding device 7 so as to send a reminding signal to the user reminding device 6.
The user reminding device 6 is arranged in the cab, and plays a reminding role in reminding a user in the vehicle to the greatest extent.
The user reminding device 6 is a loudspeaker, a display screen or a buzzer.
And after the user reminding device 6 receives the reminding signal of the monitoring controller 3, reminding the user in the vehicle through voice, screen symbols or warning sounds.
The monitoring controller 3 is a single chip microcomputer or a computer.
Fig. 2 is a detection schematic diagram of a hydrogen leakage detection device for a hydrogen energy vehicle in an embodiment of the present invention; the specific detection principle is as follows:
s101: the monitoring controller converts the received hydrogen pressure value detected by the pressure sensor of each hydrogen bottle and the received hydrogen temperature value detected by the temperature sensor to obtain the residual hydrogen mass of each hydrogen bottle by combining the volume of each hydrogen bottle;
s102: the monitoring controller sums the residual hydrogen quality of all the hydrogen bottles to obtain the total residual hydrogen quality MThe residue is leftThen the total initial hydrogen mass M is obtained according to the initial hydrogen mass of each hydrogen bottleGeneral assembly(typically the sum of the nominal hydrogen mass of each hydrogen cylinder) and the amount of water M produced by the chemical reaction in the hydrogen fuel cell reactor as detected by the flow sensorWater (W)The monitoring value x is calculated by adopting the following formula:
s103: judgment condition x<9-is true? If so, hydrogen leakage exists, the monitoring controller automatically closes valves of all hydrogen bottles to ensure driving safety, and sends a reminding signal to the user reminding device to remind a user; otherwise, no hydrogen leakage exists, and no operation is performed; wherein the predetermined allowable safety error is obtained. (x)<The 9-inequality is set according to the following formula: combined hydrogen fuel cell chemical reaction equation: 2H2+O2═2H2O, reaction consuming 1 mass unit of hydrogen per unit of consumed hydrogen, as can be seen from the principle of conservation of massGas, corresponding to 9 mass units of water. )
In step S101, for a hydrogen cylinder i, the remaining hydrogen mass miThe specific formula of the calculation method is as follows:
pi×Vi＝ni×R×Ti
mi＝M×ni
in the above formula, piThe pressure value of the hydrogen in the ith hydrogen bottle; viThe volume of the ith hydrogen bottle; r is constant, 8.314 pa; t isiThe hydrogen temperature value of the ith hydrogen bottle; n isiThe amount of the gas substance in the ith hydrogen bottle; m is the molar mass of the gas and is numerically equal to the molecular weight of the gas; m isiThe mass of the residual hydrogen in the ith hydrogen bottle to be solved; i is 1,2, …, and N is the total number of hydrogen bottles.
The utility model has the advantages that: the utility model provides a technical scheme can effectually detect out the hydrogen that hydrogen can the car and reveal to in time remind the user under the condition that hydrogen can be revealed, improve driving safety, and this device long service life, with low costs, reliability height, and the monitoring result does not receive temperature variation to influence.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. The utility model provides a detection device is revealed to hydrogen energy vehicle hydrogen which characterized in that includes: the system comprises a hydrogen fuel cell reactor (1), a flow sensor (2), a monitoring controller (3), a hydrogen bottle (4), a hydrogen supply pipeline (5) and a user reminding device (6);
the hydrogen bottles (4) are multiple, a sensor (41) and a valve (42) are arranged at a hydrogen outlet of each hydrogen bottle (4), the hydrogen outlets of the hydrogen bottles (4) are communicated in sequence, and the hydrogen outlet of the first hydrogen bottle (4) is connected to the hydrogen fuel cell reactor (1) through a hydrogen supply pipeline (5) so as to provide hydrogen for the hydrogen fuel cell reactor (1);
the valves (42) are electric control valves, and the control ends of the valves (42) of the hydrogen bottles (4) are electrically connected with the output end of the monitoring controller (3); the sensor (41) of each hydrogen bottle (4) is respectively and electrically connected with the input end of the monitoring controller (3); wherein the sensor (41) comprises: the pressure sensor is used for detecting the pressure value of the hydrogen; the temperature sensor is used for detecting the hydrogen temperature value;
one input end of the monitoring controller (3) is electrically connected with the hydrogen fuel cell reactor (1) through a flow sensor (2) so as to obtain the water quantity generated by the chemical reaction in the hydrogen fuel cell reactor (1) and detected by the flow sensor (2) in real time;
one output end of the monitoring controller (3) is electrically connected with the user reminding device (6) so as to send reminding signals to the user reminding device (6).
2. A hydrogen leakage detecting device for a hydrogen powered vehicle as claimed in claim 1, wherein: the user reminding device (6) is arranged in the cab, and plays a reminding role for the user in the vehicle to the greatest extent.
3. A hydrogen leakage detecting device for a hydrogen powered vehicle as claimed in claim 1, wherein: the user reminding device (6) is a loudspeaker, a display screen or a buzzer.
4. A hydrogen gas leakage detection device for a hydrogen powered vehicle as claimed in claim 3, wherein: and after the user reminding device (6) receives the reminding signal of the monitoring controller (3), reminding the user in the vehicle through voice, screen symbols or warning sound.
5. A hydrogen leakage detecting device for a hydrogen powered vehicle as claimed in claim 1, wherein: the monitoring controller (3) is a single chip microcomputer or a computer.
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| CN201921349605.6U CN211576498U (en) | 2019-08-20 | 2019-08-20 | Hydrogen leakage detection device for hydrogen energy vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110567658A (en) * | 2019-08-20 | 2019-12-13 | 武汉格罗夫氢能汽车有限公司 | Hydrogen leakage detection device for hydrogen energy vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110567658A (en) * | 2019-08-20 | 2019-12-13 | 武汉格罗夫氢能汽车有限公司 | Hydrogen leakage detection device for hydrogen energy vehicle |
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