CN210375713U - Safe ventilation system of environment test chamber - Google Patents
Safe ventilation system of environment test chamber Download PDFInfo
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- CN210375713U CN210375713U CN201921224777.0U CN201921224777U CN210375713U CN 210375713 U CN210375713 U CN 210375713U CN 201921224777 U CN201921224777 U CN 201921224777U CN 210375713 U CN210375713 U CN 210375713U
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Abstract
The utility model discloses an environmental test cabin safety air exchange system for fuel cell vehicle environment test, this safety air exchange system realizes the function that inside gas was swept away and was updated for confined test cabin, and this safety air exchange system includes: the first ventilation port is arranged on the side wall and/or the top wall of the test chamber and is connected with a first air source; the second ventilation port is arranged on the top wall and/or the side wall of the test chamber and is connected with a second air source; and the third ventilation port is arranged on the side wall of the test cabin body and is connected with the second wind source or the third wind source. The utility model discloses can discharge rapidly and probably reveal inflammable and explosive and poisonous and harmful gas, also can discharge rapidly the conventional waste gas that produces in the test procedure, possess the explosion-proof ability, have higher security.
Description
Technical Field
The utility model relates to an air exchange system especially relates to a safe air exchange system that is used for whole car environmental test cabin of fuel cell.
Background
The whole vehicle environment test cabin provides various simulated environment conditions for the performance test of the vehicle, such as: different temperature, humidity and wind speed amount of wind to easily regulate and control, the precision is high, the state change rapidly and can stably keep, satisfy the test environment requirement under the different operating mode of car, with carry on the multiple test experiments such as the fuel consumption of car, emission, air conditioner refrigeration heating performance, defrosting defogging performance, car low temperature start, the work such as research and development of car, test can not leave whole car environment test cabin. The whole vehicle environment testing cabin is a testing cabin with good sealing performance, when a vehicle is tested, the cabin body is in a closed state, and waste gas and required fresh air generated in the cabin testing process are processed through the ventilation system.
In recent years, the research and development direction of the automobile industry gradually changes to an environment-friendly and clean new energy automobile, and together with the vigorous support of national policies and the progress of scientific technology, the fuel cell automobile is vigorously developed to become a new development direction of the automobile industry. The air exchange system who is applicable to traditional whole car environment test cabin can not satisfy the requirement in whole car environment test cabin of fuel cell car well, and the reason has: the fuel cell automobile is mainly a hydrogen fuel cell automobile, in the whole automobile test process, the possibility of hydrogen fuel leakage exists, hydrogen is flammable and explosive gas and has certain danger, so the whole automobile environment test chamber of the fuel automobile must have an explosion-proof performance and a safe ventilation system capable of rapidly discharging the hydrogen.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a flammable and combustible and poisonous and harmful gas (such as hydrogen) that is used for the whole car environmental test cabin of fuel cell, can discharge test cabin interior top and bottom fast to have the air exchange system of hierarchical warning and explosion-proof function.
In order to solve the technical problem, the utility model provides a safe air exchange system for fuel cell vehicle environment test, include:
the safety ventilation system is positioned in a test chamber, and the test chamber is a closed space for the environmental test of the whole fuel cell vehicle;
the first ventilation port is arranged on the side wall and/or the top wall of the test chamber and is connected with a first air source;
the second ventilation port is arranged on the top wall and/or the side wall of the test chamber and is connected with a second air source;
and the third ventilation port is arranged on the side wall of the test cabin and is connected with the second wind source or the third wind source.
The safety ventilation system of the environmental test chamber is further improved, and a third ventilation port is arranged at the lower part of the side wall of the chamber body in order to exhaust waste gas at the bottom of the chamber.
The environment testing cabin safety ventilation system is further improved, the first air source is an explosion-proof fresh air fan, the second air source and the third air source are explosion-proof exhaust fans.
Further improving the environmental test chamber air exchange system, still include:
the gas concentration sensor is arranged on the top wall in the test chamber, is linked with the first air source, the second air source, the third air source and/or the alarm device, controls the start and stop of the air sources in a grading manner according to the detected different gas concentrations, and controls the alarm device to send out sound and/or light alarm signals.
The ventilation system of the environmental test chamber is further improved, and the gas concentration sensor is a hydrogen concentration sensor.
The utility model provides an environmental test cabin air exchange system adopts explosion-proof fan and relevant explosion-proof part, sweeps away the cabin top scavenge port and the bilge scavenge port of appointed gas (for example, hydrogen) about the original creation, can guarantee the whole car test demand of taking a breath, get rid of the cabin outside the appointed gas (for example, hydrogen) of leaking rapidly.
The scavenge port, wind regime and gas sensor can realize the linkage through the relay, and different actions are made according to the different concentration control first ventilation fan, second ventilation fan, third ventilation fan of the gas (for example, hydrogen) that detect and perhaps alarm device, if: start, stop, etc. Realize the grading action of each wind gap andor alarm device, reach the effect of safety protection. For example, when the concentration is low, the alarm device is started to give a warning prompt to an operator, and when the concentration is close to the critical value of the harmful gas, the ventilation fan is started to perform forced ventilation, the equipment in the cabin is forcibly stopped to operate, and the alarm device is started to give an alarm prompt to the operator.
The second scavenging port and the third scavenging port of the whole vehicle environment testing cabin can increase the number and change the arrangement mode according to the change of the requirements of the size of the cabin body, the discharge capacity of the tested vehicle and the like, so that the ventilation is timely and efficient, and once hydrogen leakage occurs in the cabin, the hydrogen can be rapidly discharged out of the cabin, so that the high safety of the environment testing cabin is ensured.
The utility model discloses at least, following technological effect has:
1. the utility model discloses a scavenging system takes the scheme of scavenging from top to bottom of cabin roof, bilge, can discharge easily flammable and explosive and poisonous harmful gas such as hydrogen that probably reveals rapidly promptly (other including but not limited to the gas that known fuel cell can produce), also can discharge the conventional waste gas that produces rapidly in the test procedure.
2. The utility model discloses a ventilation system can satisfy the demand of taking a breath of fuel cell test, also can satisfy the demand of conventional fuel car test.
3. The utility model discloses a ventilation system can monitor appointed gas (for example, hydrogen) concentration, sets up alarm threshold value through gas sensor and triggers different relays and make the fan with different power work (or different power work of a plurality of fan execution), realizes hierarchical warning andor fan hierarchical linkage, can in time discharge the poisonous and inflammable gas who reveals, and the security is higher.
4. The utility model discloses an air exchange system is an explosion-proof air exchange system, has higher security.
Drawings
The invention will be described in further detail with reference to the following detailed description and accompanying drawings:
fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a third embodiment of the present invention.
Description of the reference numerals
Test chamber body with door (carrier of safety ventilation system, but not belonging to safety ventilation system)
Hydrogen gas concentration sensor 4
Toxic and harmful gas concentration sensor 6
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and technical effects of the present invention will be fully apparent to those skilled in the art from the disclosure in the specification. The invention is capable of other embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the general spirit of the invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
As shown in fig. 1, the utility model provides a safe air exchange system in environmental test cabin for fuel cell vehicle environment test's first embodiment includes:
the testing cabin body with the door is a closed space, is used as a testing environment of the whole fuel cell vehicle, and is used as a carrier of the safety ventilation system;
a first ventilation port 1 arranged on the side wall and/or the top wall of the test chamber and connected with a first wind source (not shown in the figure); the first transfer ports can be arranged on any side wall or top wall according to actual conditions;
a second ventilation port 2 arranged on the top wall and/or the side wall of the test chamber and connected with a second wind source (not shown in the figure);
and a third ventilation port 3 which is arranged on the lower part of the side wall of the test chamber and is close to the bottom wall, and is connected with a second wind source or a third wind source (not shown in the figure).
The first air exchange port, the second air exchange port and the third air exchange port are all connected with an explosion-proof air source (not shown in the figure), the first air source is an explosion-proof fresh air fan, and the second air source and/or the third air source is an explosion-proof air draft fan.
The hydrogen fuel cell vehicle environmental test is taken as an example to illustrate the first embodiment of the present invention. This first embodiment adopts test cabin roof, test cabin lateral wall bottom all to set up the mode that the explosion-proof convulsions fan formed upper and lower scavenging. When the second air exchange port and the third air exchange port are both connected with a second air source through the air duct, the waste discharge rate of the second air exchange port and the waste discharge rate of the third air exchange port are the same. When the second air exchange port and the third air exchange port are respectively connected with the second air source and the third air source through the air duct, the second air source and the third air source can be set to work at different powers, and different waste discharge rates are formed.
Referring to fig. 2, the utility model provides an environmental test cabin safety air exchange system second embodiment for fuel cell whole car environmental test, this second embodiment is on the basis of the first embodiment further improves the formation, increase gas concentration sensor 4, it sets up on the test cabin roof, gas concentration sensor and first wind regime, second wind regime and third wind regime and or alarm device linkage, according to the start-up of the gas concentration hierarchical control wind regime of the difference that detects, stop, and control alarm device sends sound and or light alarm signal.
The gas concentration sensor can be provided with a plurality of gas concentration alarm thresholds, the safe ventilation system and the gas sensor are linked through a control module (such as a relay), and the first ventilation fan, the second ventilation fan, the third ventilation fan and/or the alarm device are controlled to make different actions according to different concentrations of detected gas (such as hydrogen), such as: start, stop, etc. Realize the grading action of each wind gap andor alarm device, reach the effect of safety protection.
The explosion critical concentration of hydrogen is 4%, so the quantity and alarm can be set. For example, when the concentration is low (the volume concentration of hydrogen is 1.0%), an alarm device is started to give an alarm prompt to an operator, when the concentration approaches a critical value of harmful gas (the volume concentration of hydrogen is 3.0%), a first ventilating fan, a second ventilating fan and a third ventilating fan are started to perform forced ventilation, the maximum power is adopted for the forced ventilation, the operation of equipment in a cabin is forcibly stopped, and the alarm device is started to give an alarm prompt to the operator.
With the present embodiment, when hydrogen is used as the control object, the hydrogen is lighter than air, and the hydrogen concentration at the top of the test chamber is higher than that at the bottom. If hydrogen leakage occurs, the second air source and the third air source work at the maximum power so as to ensure that the hydrogen is discharged as soon as possible. When a conventional whole vehicle test is carried out, particularly when a fuel vehicle is tested, the density of the generated conventional waste gas is much similar to or greater than that of air, the waste gas is mainly exhausted through a third air exchange port, and the second air source and/or the third air source work with matched power.
As shown in fig. 3, the safety ventilation system of the environmental test chamber is further improved based on the first embodiment of the above-mentioned environmental test chamber to form the third embodiment of the present invention, on the basis of the hydrogen concentration sensor of the top wall, the flammable gas sensor and/or the toxic gas sensor 6 is added, and the flammable gas sensor and/or the toxic gas sensor 6 is also linked with each ventilation fan and the alarm system of the test chamber. The main purpose is that when the test chamber is used for testing a fuel automobile, safe ventilation can be ensured.
The combustible gas sensor andor the toxic gas concentration sensor is mainly set aiming at the critical concentration of toxic and harmful gases such as HC, CO and the like, and the gas concentration sensor respectively controls the start or the stop of the first ventilation fan, the second ventilation fan, the third ventilation fan andor the alarm device. On the basis of the safety protection for preventing hydrogen explosion, safety protection measures for preventing testers from being infringed, preventing and controlling combustion danger and generating secondary explosion are added, and the safety of the safety ventilation system of the environmental test chamber is further improved.
The present invention has been described in detail with reference to the specific embodiments and examples, but these should not be construed as limitations of the present invention. Numerous variations and modifications can be made by those skilled in the art without departing from the principles of the invention, which should also be considered as within the scope of the invention.
Claims (7)
1. The utility model provides an environmental test cabin safety air exchange system for in the environmental test cabin of fuel cell whole car environmental test, its characterized in that includes:
the first ventilation port is arranged on the top wall and/or the side wall of the environment testing cabin and is connected with a first wind source;
the second ventilation port is arranged on the top wall and/or the side wall of the environment testing cabin and is connected with a second wind source;
and the third ventilation port is arranged on the side wall of the environment testing cabin and is connected with the second wind source or the third wind source.
2. The environmental test chamber safety ventilation system of claim 1, wherein: the first air source, the second air source and the third air source are explosion-proof fans.
3. The environmental test chamber safety ventilation system of claim 1, wherein: the first air source is a fresh air fan, and the type of the conveyed air is outdoor air which is sent into the test cabin from the outside.
4. The environmental test chamber safety ventilation system of claim 1, wherein: the second air source and the third air source are exhaust fans, and the type of the conveyed air is mixed air in the test cabin body and is sent out of the room from the interior of the cabin body.
5. The environmental test chamber safety ventilation system of claim 1, further comprising:
the gas concentration sensor is arranged on the top wall in the test chamber, is linked with the first air source, the second air source, the third air source and/or the alarm device, controls the start and stop of the air sources in a grading manner according to the detected different gas concentrations, and controls the alarm device to send out sound and/or light alarm signals.
6. The environmental test chamber safety ventilation system of claim 5, wherein: the gas concentration sensor is a hydrogen concentration sensor.
7. The environmental test chamber safety ventilation system of claim 6, wherein: two gas concentration sensors are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921224777.0U CN210375713U (en) | 2019-07-31 | 2019-07-31 | Safe ventilation system of environment test chamber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921224777.0U CN210375713U (en) | 2019-07-31 | 2019-07-31 | Safe ventilation system of environment test chamber |
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| CN210375713U true CN210375713U (en) | 2020-04-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111834650A (en) * | 2020-07-24 | 2020-10-27 | 阳光电源股份有限公司 | Renewable energy hydrogen production and regeneration system and safety control method thereof |
| CN111917177A (en) * | 2020-06-15 | 2020-11-10 | 阜阳腾冠电力科技有限公司 | Power distribution cabinet based on Internet of things |
| CN112763912A (en) * | 2020-12-25 | 2021-05-07 | 上海汉测智能科技有限公司 | Intelligent hydrogen fuel cell test system and control method |
| CN117054112A (en) * | 2023-07-17 | 2023-11-14 | 中公高远(北京)汽车检测技术有限公司 | Hydrogen-related test environmental cabin for automobile |
-
2019
- 2019-07-31 CN CN201921224777.0U patent/CN210375713U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111917177A (en) * | 2020-06-15 | 2020-11-10 | 阜阳腾冠电力科技有限公司 | Power distribution cabinet based on Internet of things |
| CN111834650A (en) * | 2020-07-24 | 2020-10-27 | 阳光电源股份有限公司 | Renewable energy hydrogen production and regeneration system and safety control method thereof |
| CN111834650B (en) * | 2020-07-24 | 2021-09-03 | 阳光电源股份有限公司 | Renewable energy hydrogen production and regeneration system and safety control method thereof |
| CN112763912A (en) * | 2020-12-25 | 2021-05-07 | 上海汉测智能科技有限公司 | Intelligent hydrogen fuel cell test system and control method |
| CN117054112A (en) * | 2023-07-17 | 2023-11-14 | 中公高远(北京)汽车检测技术有限公司 | Hydrogen-related test environmental cabin for automobile |
| CN117054112B (en) * | 2023-07-17 | 2024-04-02 | 中公高远(北京)汽车检测技术有限公司 | Hydrogen-related test environmental cabin for automobile |
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