CN112285276A - Hydrogen concentration measuring device for tail gas of fuel cell electric automobile - Google Patents
Hydrogen concentration measuring device for tail gas of fuel cell electric automobile Download PDFInfo
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- CN112285276A CN112285276A CN201910684595.XA CN201910684595A CN112285276A CN 112285276 A CN112285276 A CN 112285276A CN 201910684595 A CN201910684595 A CN 201910684595A CN 112285276 A CN112285276 A CN 112285276A
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- 239000007789 gas Substances 0.000 title claims abstract description 85
- 239000001257 hydrogen Substances 0.000 title claims abstract description 66
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 66
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 239000000446 fuel Substances 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 238000005259 measurement Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 150000002431 hydrogen Chemical class 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/005—H2
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fuel Cell (AREA)
Abstract
The invention provides a hydrogen concentration measuring device for tail gas of a fuel cell electric automobile, which mainly comprises an air collecting port, a gas-water separator, a filter, a flowmeter, a hydrogen concentration sensor, an air pump, a main controller, a low-voltage power supply, a water storage tank, a water drain valve, a connecting pipeline of the water drain valve, a power supply signal wire and the like. The device is controlled by a main controller, partial tail gas of the fuel cell electric automobile is collected by air suction of an air suction pump, and then the tail gas is conveyed to a hydrogen concentration sensor through a gas-water separator and a filter so as to measure the hydrogen concentration. The method is used for measuring the hydrogen concentration value in the exhaust emission of the fuel cell electric automobile.
Description
Technical Field
The invention belongs to the field of automobile performance testing, and particularly relates to a hydrogen concentration measuring device for tail gas of a fuel cell electric automobile.
Background
In recent years, fuel cell electric vehicles have been developed rapidly. The reaction by-product used for the fuel cell is relatively pure water, the energy exchange efficiency of the fuel cell engine is high, and the fuel cell electric automobile is taken as a main development direction in many countries and whole automobile factories in the world. The main fuel used by the fuel cell electric automobile is pure hydrogen, but due to the characteristics of flammability, explosiveness and the like of the hydrogen, certain potential safety hazard is brought to practical use. The exhaust gas discharged by the fuel cell electric automobile contains part of hydrogen because the fuel cell engine needs to purge the anode pipeline of the fuel cell stack by using hydrogen, and the like. No matter from the perspective of time-consuming hydrogen consumption from the safety perspective, the hydrogen content of the discharged tail gas must be as low as possible, and the 3-second average value of the hydrogen volume concentration of the tail gas cannot exceed 4% and the instantaneous concentration limit value cannot exceed 8% are required by standards such as GTR No.13 Global technical rules for Hydrogen energy and Fuel cell electric vehicles, GB/T2449 safety requirements for Fuel cell electric vehicles, and the like. However, it requires special equipment and techniques to measure and evaluate the concentration of hydrogen in the exhaust gas from a fuel cell electric vehicle.
Disclosure of Invention
In view of the above, the present invention provides a hydrogen concentration measuring device for exhaust gas of a fuel cell electric vehicle, so as to solve the problem of testing and determining the concentration value of hydrogen in the exhaust gas discharged by the fuel cell electric vehicle.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides a hydrogen concentration measuring device of fuel cell electric automobile tail gas which characterized in that: the device mainly comprises an air collecting port, a gas-water separator, a filter, a flowmeter, a hydrogen concentration sensor, an air pump, a main controller, a low-voltage power supply, a water storage tank, a water drain valve, a connecting pipeline, a power supply signal wire and the like; one end of a bell mouth of the gas collecting port collects tail gas, and the other end of the bell mouth is connected with a gas inlet of the gas-water separator through a gas transmission pipeline; the gas outlet of the gas-water separator is connected with the gas inlet of the filter through a pipeline, and the water outlet of the gas-water separator is connected with the inlet of the water storage tank through a pipeline; the air outlet of the filter is connected with the air inlet of the flowmeter through a pipeline; the gas outlet of the flow meter is connected with the gas inlet of the hydrogen concentration sensor through a pipeline; the gas outlet of the hydrogen concentration sensor is connected with the gas inlet of the air pump; the air outlet of the air pump is connected with the atmosphere through an air discharge pipeline; the main controller is connected with the low-voltage power supply and the air pump through power lines and is connected with the hydrogen concentration sensor through signal lines; the water outlet of the water storage tank is connected with the water inlet of the water drain valve; the water drain valve is connected with the atmosphere through a water drain pipeline; the gas collecting port is used for collecting part of tail gas discharged by the fuel cell electric automobile; the gas-water separator is used for separating water in the collected tail gas; the filter is used for filtering particulate matters and organic solvents in the collected tail gas; the flowmeter is used for indicating that tail gas with normal flow passes through a gas pipeline of the device; the hydrogen concentration sensor is used for measuring the volume concentration of hydrogen in the tail gas; the air pump is used for pumping a part of the tail gas of the fuel cell electric automobile into the measuring device; the main controller is used for controlling the air pump to work and collecting and recording the measurement value of the hydrogen concentration sensor; the low-voltage power supply is used for supplying power to the device; the water storage tank is used for storing the water separated by the gas-water separator; the water drain valve is used for draining water stored in the water storage tank, and when the water level in the water storage tank reaches an indication height line, the water drain valve is manually opened to empty the water storage tank.
When the measuring device works, the gas collecting port is arranged near the tail gas exhaust port of the fuel cell electric vehicle according to requirements; under the control of the main controller, starting the air pump to pump partial tail gas of the automobile, wherein the pumped tail gas passes through the air collecting port, the gas-water separator, the filter, the flowmeter, the hydrogen concentration sensor and the air pump in sequence and is finally discharged into the atmosphere; meanwhile, the hydrogen concentration value measured by the hydrogen concentration sensor is transmitted to the main controller for storage, and the sampling frequency is not lower than 5 Hz; and simultaneously, the main controller displays and judges the acquired hydrogen concentration value so as to determine whether the hydrogen concentration in the tail gas meets the standard requirement.
Compared with the prior art, the hydrogen concentration measuring device for the fuel cell electric automobile exhaust has the following advantages:
the hydrogen concentration measuring device for the fuel cell electric vehicle tail gas can collect and measure the hydrogen concentration value in the tail gas, and store and display the hydrogen concentration value; and simultaneously judging whether the concentration value of the hydrogen in the tail gas meets the standard requirement.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
fig. 1 is a schematic structural diagram of a hydrogen concentration measurement device for fuel cell electric vehicle exhaust according to an embodiment of the present invention.
Description of reference numerals:
1-an air collecting port, 2-a gas-water separator, 3-a filter, 4-a flow meter, 5-a hydrogen concentration sensor, 6-an air pump, 7-a main controller, 8-a low-voltage power supply, 9-a water storage tank and 10-a water drain valve.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
A hydrogen concentration measuring device of fuel cell electric automobile tail gas is shown in figure 1, and comprises a gas collecting port 1, a gas-water separator 2, a filter 3, a flow meter 4, a hydrogen concentration sensor 5, an air pump 6, a main controller 7, a low-voltage power supply 8, a water storage tank 9, a water drain valve 10, a connecting pipeline, a power supply signal wire and the like; one end of a bell mouth of the gas collecting port 1 collects tail gas, and the other end of the bell mouth is connected with a gas inlet of the gas-water separator 2 through a gas transmission pipeline; the air outlet of the gas-water separator 2 is connected with the air inlet of the filter 3 through a pipeline, and the water outlet of the gas-water separator 2 is connected with the inlet of the water storage tank 9 through a pipeline; the air outlet of the filter 3 is connected with the air inlet of the flowmeter 4 through a pipeline; the gas outlet of the flow meter 4 is connected with the gas inlet of the hydrogen concentration sensor 5 through a pipeline; the gas outlet of the hydrogen concentration sensor 5 is connected with the gas inlet of the air pump 6; the air outlet of the air pump 6 is connected with the atmosphere through an air discharge pipeline; the main controller 7 is connected with the low-voltage power supply 8 and the air pump 6 through power lines and is connected with the hydrogen concentration sensor 5 through signal lines; the water outlet of the water storage tank 9 is connected with the water inlet of the water drain valve 10; the water drain valve 10 is connected with the atmosphere through a water drain pipeline; the gas collecting port 1 is used for collecting partial tail gas discharged by the fuel cell electric automobile; the gas-water separator 2 is used for separating water in the collected tail gas; the filter 3 is used for filtering particulate matters and organic solvents in the collected tail gas; the flowmeter 4 is used for indicating that tail gas with normal flow passes through a gas pipeline of the device; the hydrogen concentration sensor 5 is used for measuring the volume concentration of hydrogen in the tail gas; the air pump 6 is used for generating negative pressure to pump part of the tail gas exhausted by the fuel cell electric automobile into the measuring device; the main controller 7 is used for controlling the air pump 6 to work and collecting and recording the measurement value of the hydrogen concentration sensor 5; the low-voltage power supply 8 is used for supplying power to the device; the water storage tank 9 is used for storing the water separated by the gas-water separator 2; the water drain valve 10 is used for draining water stored in the water storage tank 9, and when the water level in the water storage tank 9 reaches an indication height line, the water drain valve 10 is manually opened to drain the water storage tank 9.
When the measuring device works, the gas collecting port 1 is arranged near a tail gas exhaust port of the fuel cell electric vehicle according to requirements; under the control of the main controller 7, starting the air pump 6 to pump part of the tail gas of the automobile, wherein the pumped tail gas passes through the air collecting port 1, the gas-water separator 2, the filter 3, the flowmeter 4, the hydrogen concentration sensor 5 and the air pump 6 in sequence and is finally discharged into the atmosphere; meanwhile, the hydrogen concentration value measured by the hydrogen concentration sensor 5 is transmitted to the main controller 7 for storage, and the sampling frequency is not lower than 5 Hz; and meanwhile, the main controller 7 displays and judges the acquired hydrogen concentration value to determine whether the hydrogen concentration in the tail gas meets the standard requirement.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (2)
1. The utility model provides a hydrogen concentration measuring device of fuel cell electric automobile tail gas which characterized in that: mainly comprises an air collecting port (1), a gas-water separator (2), a filter (3), a flowmeter (4), a hydrogen concentration sensor (5), an air pump (6), a main controller (7), a low-voltage power supply (8), a water storage tank (9), a water drain valve (10), a connecting pipeline, a power supply signal wire and the like; one end of a bell mouth of the gas collecting port (1) collects tail gas, and the other end of the bell mouth is connected with a gas inlet of the gas-water separator (2) through a gas transmission pipeline; the air outlet of the gas-water separator (2) is connected with the air inlet of the filter (3) through a pipeline, and the water outlet of the gas-water separator (2) is connected with the inlet of the water storage tank (9) through a pipeline; the air outlet of the filter (3) is connected with the air inlet of the flowmeter (4) through a pipeline; the gas outlet of the flow meter (4) is connected with the gas inlet of the hydrogen concentration sensor (5) through a pipeline; the gas outlet of the hydrogen concentration sensor (5) is connected with the gas inlet of the air pump (6); the air outlet of the air pump (6) is connected with the atmosphere through an air discharge pipeline; the main controller (7) is connected with the low-voltage power supply (8) and the air pump (6) through power lines and is connected with the hydrogen concentration sensor (5) through signal lines; the water outlet of the water storage tank (9) is connected with the water inlet of the water drain valve (10); the water drain valve (10) is connected with the atmosphere through a water drain pipeline; the gas collecting port (1) is used for collecting part of tail gas discharged by the fuel cell electric automobile; the gas-water separator (2) is used for separating water in the collected tail gas; the filter (3) is used for filtering particulate matters and organic solvents in the collected tail gas; the flowmeter (4) is used for indicating that tail gas with normal flow passes through a gas pipeline of the device; the hydrogen concentration sensor (5) is used for measuring the volume concentration of hydrogen in the tail gas; the air pump (6) is used for pumping a part of the tail gas of the fuel cell electric automobile into the measuring device; the main controller (7) is used for controlling the air pump (6) to work and collecting and recording the measurement value of the hydrogen concentration sensor (5); the low-voltage power supply (8) is used for supplying power to the device; the water storage tank (9) is used for storing water separated by the gas-water separator (2); the water drain valve (10) is used for draining water stored in the water storage tank (9), and when the water level in the water storage tank (9) reaches an indication height line, the water drain valve (10) is manually opened to drain the water storage tank (9).
2. The fuel cell electric vehicle hydrogen emission measurement device according to claim 1, characterized in that: when the measuring device works, the gas collecting port (1) is arranged near a tail gas exhaust port of the fuel cell electric vehicle as required; under the control of the main controller (7), starting the air pump (6) to pump partial tail gas of the automobile, sequentially passing the extracted tail gas through the air collecting port (1), the gas-water separator (2), the filter (3), the flowmeter (4), the hydrogen concentration sensor (5) and the air pump (6), and finally discharging the tail gas into the atmosphere; meanwhile, the hydrogen concentration value measured by the hydrogen concentration sensor (5) is transmitted to the main controller (7) for storage, and the sampling frequency is not lower than 5 Hz; and meanwhile, the main controller (7) displays and judges the acquired hydrogen concentration value to determine whether the hydrogen concentration in the tail gas meets the standard requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910684595.XA CN112285276A (en) | 2019-07-27 | 2019-07-27 | Hydrogen concentration measuring device for tail gas of fuel cell electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910684595.XA CN112285276A (en) | 2019-07-27 | 2019-07-27 | Hydrogen concentration measuring device for tail gas of fuel cell electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN112285276A true CN112285276A (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910684595.XA Pending CN112285276A (en) | 2019-07-27 | 2019-07-27 | Hydrogen concentration measuring device for tail gas of fuel cell electric automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488683A (en) * | 2021-06-30 | 2021-10-08 | 东风汽车集团股份有限公司 | Fuel cell automobile hydrogen emission testing device and method |
| CN114594214A (en) * | 2022-03-10 | 2022-06-07 | 中国汽车工程研究院股份有限公司 | Fuel cell automobile exhaust sampling and detecting equipment |
-
2019
- 2019-07-27 CN CN201910684595.XA patent/CN112285276A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488683A (en) * | 2021-06-30 | 2021-10-08 | 东风汽车集团股份有限公司 | Fuel cell automobile hydrogen emission testing device and method |
| CN113488683B (en) * | 2021-06-30 | 2023-01-31 | 东风汽车集团股份有限公司 | Fuel cell automobile hydrogen emission testing device and method |
| CN114594214A (en) * | 2022-03-10 | 2022-06-07 | 中国汽车工程研究院股份有限公司 | Fuel cell automobile exhaust sampling and detecting equipment |
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Application publication date: 20210129 |