CN219350278U - Hydrogen leakage warning device of fuel cell automobile - Google Patents
Hydrogen leakage warning device of fuel cell automobile Download PDFInfo
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- CN219350278U CN219350278U CN202223460470.5U CN202223460470U CN219350278U CN 219350278 U CN219350278 U CN 219350278U CN 202223460470 U CN202223460470 U CN 202223460470U CN 219350278 U CN219350278 U CN 219350278U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model provides a fuel cell car hydrogen leakage warning device, relates to fuel cell related field, including hydrogen circulation system and odorizing system, odorizing agent filling opening of odorizing system sets up in the rear end pipeline of hydrogen circulation system; the odorizing system comprises an odorizing agent storage tank, a booster pump, an odorizing agent checking cylinder and an electromagnetic valve, wherein the odorizing agent storage tank, the booster pump, the odorizing agent checking cylinder and the electromagnetic valve are sequentially connected, the other end of the electromagnetic valve is connected with the hydrogen circulating system, and the odorizing system can add odorizing agent into the hydrogen circulating system at regular intervals of a plurality of months according to a set program.
Description
Technical Field
The utility model relates to the related field of fuel cells, in particular to a hydrogen leakage warning device of a fuel cell automobile.
Background
Hydrogen energy is considered as the most potential clean energy in the 21 st century because of its clean, efficient, safe and sustainable development characteristics. The rapid promotion of the hydrogen energy society construction pace is particularly important for relieving the problems of energy shortage and environmental pollution.
In particular, the hydrogen oil is used for accelerating the decarburization process in the traffic field. The hydrogen fuel cell automobile is a new energy automobile which uses hydrogen energy to replace the traditional fossil energy automobile, the automobile adopts a 35MPa or 70MPa high-pressure air storage tank to store hydrogen, and the chemical energy of the hydrogen is converted into electric energy through a fuel cell stack so as to drive the automobile to run. The leakage of hydrogen is an important dangerous factor when a vehicle runs, and because the lower explosion limit of hydrogen is low (the explosion limit in the air is 4% -75%), dangerous situations such as combustion, explosion and the like are easy to occur when the hydrogen is gathered in a closed space after the hydrogen is leaked. Early discovery of hydrogen leakage is particularly important.
The hydrogen leakage monitoring of the whole car comprises hydrogen leakage monitoring of a passenger cabin, hydrogen leakage monitoring of a fuel cell system, hydrogen leakage monitoring of a fuel pipeline and the like, and is mainly characterized in that hydrogen leakage sensors are arranged at positions where hydrogen is easy to gather and leak, such as a hydrogen storage bottleneck of the fuel cell, the tail part and the middle part of a passenger cabin, a fuel cell engine room and the like, so that the concentration of the hydrogen in the car is monitored in real time. At present, a plurality of hydrogen concentration detection instruments are used for detecting hydrogen leakage, when the concentration of hydrogen in air reaches a certain amount, an audible and visual alarm is triggered, the detection sensitivity of the instruments is high, but a single instrument is high in price, and the measuring point is single, so that the instrument is suitable for detecting hydrogen leakage in a closed non-circulation place and is limited in use on a hydrogen fuel cell vehicle. In order to accommodate more scenarios, a more versatile and inexpensive method of hydrogen leak detection for fuel cell automobiles is needed.
Natural gas has the characteristics of no color and smell, is not easy to be perceived after leakage, and a certain amount of odorizing agent is added into the natural gas to play a role in leakage warning, so that the application of the odorizing agent is very popular in the natural gas industry. Town gas is specified in the town gas design Specification (GB 50028-2006) to be odorized. The hydrogen which is one of the energy sources has the characteristics similar to natural gas, so that the odorizing agent is added into the hydrogen pipeline of the hydrogen fuel cell automobile, and the method is a universal method capable of quickly finding hydrogen leakage. If hydrogen leakage occurs during the running process of the hydrogen vehicle, besides the audible and visual alarm of the hydrogen concentration detector, the odorizing agent can also give an alarm to personnel through smell.
Disadvantages of the prior art:
the hydrogen leakage detection means of the hydrogen fuel cell vehicle is single and is generally completed through a hydrogen concentration detector, the application range of the hydrogen fuel cell vehicle is limited, the measuring point is single, the economic cost is high, and the hydrogen fuel cell vehicle needs to be detected every year.
Disclosure of Invention
The utility model aims to provide a fuel cell automobile hydrogen leakage warning device for solving the problems in the background technology.
The utility model solves the technical problems by adopting the following technical scheme:
the fuel cell automobile hydrogen leakage warning device comprises a hydrogen circulation system and an odorizing system, wherein an odorizing agent injection port of the odorizing system is arranged in a rear end pipeline of the hydrogen circulation system;
the odorizing system comprises an odorizing agent storage tank, a booster pump, an odorizing agent checking cylinder and an electromagnetic valve, wherein the odorizing agent storage tank, the booster pump, the odorizing agent checking cylinder and the electromagnetic valve are sequentially connected, the other end of the electromagnetic valve is connected with the hydrogen circulating system, and the odorizing system can add odorizing agent into the hydrogen circulating system regularly every several months according to a set program so as to keep a certain concentration of the odorizing agent in the hydrogen circulating system;
when the system works normally, a certain amount of odorizing agent liquid stored in the odorizing agent storage tank enters the booster pump for boosting according to the design, the liquid enters the odorizing agent checking cylinder after the booster pump is boosted, the odorizing agent checking cylinder is a quantitative container which can store a fixed amount of liquid, the booster pump can continuously work for a period of time to ensure that the odorizing agent checking cylinder is full of liquid, then the booster pump stops working and ensures that the connection between the odorizing agent storage tank and the odorizing agent checking cylinder is cut off, finally, the electromagnetic valve at the front end of the odorizing agent checking cylinder is opened, the odorizing agent checking cylinder filled with odorizing agent is connected with a hydrogen circulation system, the odorizing agent is naturally volatilized and mixed with hydrogen to form mixed gas, and when the hydrogen leaks, the mixed gas with special odor can play a role in warning a vehicle operator, and in addition, the odorizing agent can not be consumed in the hydrogen circulation.
Preferably, the hydrogen circulation system comprises a hydrogen storage tank, wherein one end of the hydrogen storage tank is connected with a hydrogen fuel cell stack through a first pipeline, and a hydrogen pressure reducing valve, a hydrogen pipeline stop valve and a hydrogen pressure regulating valve are connected on the first pipeline between the hydrogen storage tank and the hydrogen fuel cell stack.
Preferably, an ejector is further arranged on the first pipeline between the hydrogen storage tank and the hydrogen fuel cell stack, a second pipeline is connected and arranged at the lower end of the ejector, a gas-water separator is arranged on the second pipeline, a third pipeline and a fourth pipeline are respectively connected and arranged on the gas-water separator, a drain valve is connected and arranged on the third pipeline, and the fourth pipeline is fixedly connected with the hydrogen fuel cell stack.
Preferably, a fifth pipeline is further connected to the first pipeline, a safety valve is installed on the fifth pipeline, a sixth pipeline is installed on the fifth pipeline, and a hydrogen evacuation hand valve is installed on the sixth pipeline.
The utility model has the advantages and positive effects that:
1. according to the utility model, a certain amount of odorizing agent is injected into the hydrogen circulation system of the fuel cell and mixed with hydrogen, so that relevant personnel can be warned when the hydrogen leaks.
2. The hydrogen concentration alarm device is supplemented, so that the use scene of hydrogen leakage alarm is expanded, and the possibility of early finding hydrogen leakage is improved.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the overall structure of a fuel cell vehicle hydrogen leakage warning device according to the present utility model.
The index marks in the drawings are as follows: 1-an odorizing agent storage tank; 2-a booster pump; 3-an odorizing agent checking cylinder; 4-an electromagnetic valve; a 5-hydrogen pressure reducing valve; 6-a hydrogen pipeline stop valve; 7-a hydrogen pressure regulating valve; 8-an ejector; 9-a safety valve; 10-a hydrogen evacuation hand valve; 11-hydrogen fuel cell stack; 12-a gas-water separator; 13-a drain valve; 14-a hydrogen storage tank.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
The utility model will be described in detail with reference to fig. 1, wherein for convenience of description, the following orientations are defined as follows: the vertical, horizontal, vertical, front-to-back directions described below are the same as the vertical, horizontal, vertical, and horizontal directions of the view of fig. 1. Fig. 1 is a front view of the device of the present utility model, and the direction of fig. 1 is the same as the vertical, horizontal, vertical, front-to-back, horizontal, and horizontal directions of the device of the present utility model.
Embodiments of the utility model are described in further detail below with reference to the attached drawing figures:
referring to fig. 1, an embodiment of the present utility model is provided: the fuel cell automobile hydrogen leakage warning device comprises a hydrogen circulation system and an odorizing system, wherein an odorizing agent injection port of the odorizing system is arranged in a rear end pipeline of the hydrogen circulation system;
the odorizing system comprises an odorizing agent storage tank 1, a booster pump 2, an odorizing agent checking cylinder 3 and an electromagnetic valve 4, wherein the odorizing agent storage tank 1, the booster pump 2, the odorizing agent checking cylinder 3 and the electromagnetic valve 4 are sequentially connected, the other end of the electromagnetic valve 4 is connected with the hydrogen circulating system, and the odorizing system can add odorizing agent into the hydrogen circulating system at regular intervals of a plurality of months according to a set program so as to keep a certain concentration of the odorizing agent in the hydrogen circulating system;
when the system works normally, a certain amount of odorizing agent liquid stored in the odorizing agent storage tank 1 enters the booster pump 2 for boosting according to the design, the liquid enters the odorizing agent checking cylinder 3 after the booster pump 2 is boosted, the odorizing agent checking cylinder 3 is a quantitative container which can store a fixed amount of liquid, the booster pump 2 can continuously work for a period of time to ensure that the odorizing agent checking cylinder 3 is full of liquid, then the booster pump 2 stops working and ensures that the connection between the odorizing agent storage tank 1 and the odorizing agent checking cylinder 3 is cut off, finally the electromagnetic valve 4 at the front end of the odorizing agent checking cylinder 3 is opened, the odorizing agent checking cylinder 3 filled with the odorizing agent is connected with a hydrogen circulation system, the odorizing agent naturally volatilizes and is mixed with hydrogen to form mixed gas, and when the hydrogen leaks, the odorizing agent can participate in the hydrogen circulation and cannot be consumed.
In addition, in one embodiment, the hydrogen circulation system includes a hydrogen storage tank 14, one end of the hydrogen storage tank 14 is connected to a hydrogen fuel cell stack 11 through a first pipe, and a hydrogen pressure reducing valve 5, a hydrogen pipeline stop valve 6 and a hydrogen pressure regulating valve 7 are connected to the first pipe between the hydrogen storage tank 14 and the hydrogen fuel cell stack 11.
In addition, in one embodiment, an ejector 8 is further arranged on a first pipeline between the hydrogen storage tank 14 and the hydrogen fuel cell stack 11, a second pipeline is connected and arranged at the lower end of the ejector 8, a gas-water separator 12 is arranged on the second pipeline, a third pipeline and a fourth pipeline are respectively connected and arranged on the gas-water separator 12, a drain valve 13 is connected and arranged on the third pipeline, and the fourth pipeline is fixedly connected with the hydrogen fuel cell stack 11.
In addition, in one embodiment, a fifth pipeline is further connected to the first pipeline, a safety valve 9 is installed on the fifth pipeline, a sixth pipeline is installed on the fifth pipeline, and a hydrogen evacuation hand valve 10 is installed on the sixth pipeline.
When the odorizing system works normally, a certain amount of odorizing agent liquid stored in the odorizing agent storage tank 1 enters the booster pump 2 according to the design to be pressurized, the booster pump 2 can be started according to the conditions of fixed time or the consumption of odorizing agent in the hydrogen pipeline, and the like, the odorizing agent liquid in the odorizing agent supplementing check cylinder 3 is started in time, when the booster pump 2 stops working, an isolation effect is formed on the odorizing agent storage tank 1 at the front end and the odorizing agent check cylinder 3 at the rear end, the odorizing agent is prevented from flowing, when the booster pump 2 is started normally, the odorizing agent enters the odorizing agent check cylinder 3, the odorizing agent check cylinder 3 is a quantitative device, a fixed amount of liquid can be stored, the odorizing agent is pressurized into the odorizing agent check cylinder 3, the specific amount of odorizing agent liquid is measured, then the booster pump is stopped, the odorizing agent is communicated with the odorizing agent check cylinder 3 and the electromagnetic valve 4 to be mixed to form special odor gas, and finally the electromagnetic valve 4 is closed, so that the odorizing agent can be kept in the hydrogen circulating pipeline to be in a concentration range, and the hydrogen gas leakage condition can be kept in the hydrogen gas leakage condition or the periphery of a vehicle can occur, and the personnel can be reminded of the hydrogen leakage condition.
It should be emphasized that the examples described herein are illustrative rather than limiting, and therefore the utility model is not limited to the examples described in the detailed description, but rather falls within the scope of the utility model as defined by other embodiments derived from the technical solutions of the utility model by those skilled in the art.
Claims (4)
1. The utility model provides a fuel cell car hydrogen leakage warning device, includes hydrogen circulation system and odorizing system, its characterized in that: the odorizing system comprises an odorizing agent storage tank (1), a booster pump (2), an odorizing agent checking cylinder (3) and an electromagnetic valve (4), wherein the odorizing agent storage tank (1), the booster pump (2), the odorizing agent checking cylinder (3) and the electromagnetic valve (4) are sequentially connected, the other end of the electromagnetic valve (4) is connected with the hydrogen circulating system, and the odorizing system is used for adding the odorizing agent into the hydrogen circulating system at regular intervals of a plurality of months according to a set program.
2. The fuel cell vehicle hydrogen leakage warning device of claim 1, wherein: the hydrogen circulation system comprises a hydrogen storage tank (14), one end of the hydrogen storage tank (14) is connected with a hydrogen fuel cell stack (11) through a first pipeline, a hydrogen pressure reducing valve (5), a hydrogen pipeline stop valve (6) and a hydrogen pressure regulating valve (7) are connected on the first pipeline between the hydrogen storage tank (14) and the hydrogen fuel cell stack (11).
3. A fuel cell vehicle hydrogen leakage warning device in accordance with claim 2, wherein: the hydrogen storage tank is characterized in that an ejector (8) is further arranged on a first pipeline between the hydrogen storage tank (14) and the hydrogen fuel cell stack (11), a second pipeline is connected and arranged at the lower end of the ejector (8), a gas-water separator (12) is arranged on the second pipeline, a third pipeline and a fourth pipeline are respectively connected and arranged on the gas-water separator (12), a drain valve (13) is connected and arranged on the third pipeline, and the fourth pipeline is fixedly connected with the hydrogen fuel cell stack (11).
4. A fuel cell vehicle hydrogen leakage warning device according to claim 3, wherein: the first pipeline is further connected with a fifth pipeline, a safety valve (9) is arranged on the fifth pipeline, a sixth pipeline is arranged on the fifth pipeline, and a hydrogen evacuation hand valve (10) is arranged on the sixth pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223460470.5U CN219350278U (en) | 2022-12-23 | 2022-12-23 | Hydrogen leakage warning device of fuel cell automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223460470.5U CN219350278U (en) | 2022-12-23 | 2022-12-23 | Hydrogen leakage warning device of fuel cell automobile |
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| Publication Number | Publication Date |
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| CN219350278U true CN219350278U (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223460470.5U Active CN219350278U (en) | 2022-12-23 | 2022-12-23 | Hydrogen leakage warning device of fuel cell automobile |
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| CN (1) | CN219350278U (en) |
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- 2022-12-23 CN CN202223460470.5U patent/CN219350278U/en active Active
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