CN112687920A - Device for simulating circulating pump capacity in fuel cell system - Google Patents
Device for simulating circulating pump capacity in fuel cell system Download PDFInfo
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- CN112687920A CN112687920A CN202011593249.XA CN202011593249A CN112687920A CN 112687920 A CN112687920 A CN 112687920A CN 202011593249 A CN202011593249 A CN 202011593249A CN 112687920 A CN112687920 A CN 112687920A
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- fuel cell
- circulating pump
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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 invention relates to a device for simulating the capacity of a circulating pump in a fuel cell system, which comprises a simulated fuel cell pipeline and a circulating pipeline, wherein the simulated fuel cell pipeline comprises a hydrogen source, a pressure reducing valve, a proportional valve, an electromagnetic valve and a simulated fuel cell which are sequentially connected, the inlet end of the circulating pipeline is connected with the outlet of the simulated fuel cell, the outlet end of the circulating pipeline is circularly connected at the inlet of the electromagnetic valve, a circulating pump to be tested is connected in the circulating pipeline, pressure sensors are arranged at the inlet and the outlet of the circulating pump to be tested, and a second flowmeter is arranged at the outlet of the circulating pump to be tested. The invention solves the problem that the flow, the rotating speed and the pressure of the circulating pump are not matched with the parameters required by the system after the circulating pump is arranged on the system, has clearer control method for the hydrogen system, better meets the system test and debugging requirements, and more quickly responds to the system command and the power increase.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a device for simulating the capacity of a circulating pump in a fuel cell system.
Background
The fuel cell system has a good application scene as a vehicle-mounted engine, so the research of the fuel cell system also has important significance. The hydrogen system is used as an important component of the fuel cell system, and the circulating pump is used as an important part of the hydrogen system, so that the hydrogen system has important significance for exploring and researching the capacity of the hydrogen system.
Since hydrogen is expensive, the waste of hydrogen can greatly increase the cost of the entire fuel cell system. Meanwhile, hydrogen leakage can bring certain potential safety hazard, so that the hydrogen is recycled by using a hydrogen circulating pump
However, the problems that the capacity of the hydrogen circulating pump is not matched with the required power of the system, the power change of the system cannot be matched in time, the rotating speed setting of the circulating pump under different powers is not clear and the like exist at present, and therefore the efficiency of testing the performance and power improvement of the whole fuel cell system is greatly reduced.
Therefore, the capability of the circulating pump is tested and known on line, the numerical value of the circulating pump is matched with the theoretical value required by the system in advance, the efficiency of system testing can be greatly improved, the problems of cost waste and the like caused by the on-line exploration of the capability of the circulating pump of the system are solved, and the testing process of the whole fuel cell system can be better standardized.
Disclosure of Invention
In order to improve the efficiency of the test work of the fuel cell system and reduce the problems of difficult system test, incapability of responding to the increase and change of the system power and the like caused by the mismatching of the performance of parts and the incomprehensive understanding of the performance of the parts, the invention provides a device for simulating the capacity of a circulating pump in the fuel cell system.
In order to achieve the object of the present invention, the present application provides the following technical solutions.
In a first aspect, the application provides a device of circulating pump ability in simulation fuel cell system, a serial communication port, the device is including simulation fuel cell pipeline and circulation pipeline, wherein, the simulation fuel cell pipeline is including hydrogen source, relief pressure valve, proportional valve, solenoid valve and the simulation fuel cell who connects gradually, circulation pipeline's entrance point and simulation fuel cell's exit linkage, circulation pipeline's exit end circular connection is in the import department of solenoid valve, be connected with the circulating pump that awaits measuring in the circulation pipeline, all be equipped with pressure sensor in the import of the circulating pump that awaits measuring and exit, be equipped with the second flowmeter in the exit of the circulating pump that awaits measuring. This application can be comparatively real reflection fuel cell advance hydrogen volume, the hydrogen consumption volume at normal during operation through simulation fuel cell, thereby make each item condition of circulating pump in the test procedure the same basically rather than each item condition in the actual work, consequently, can directly use the test result application of circulating pump in the fuel cell system of reality, do not need extra debugging, improve fuel cell system test work's efficiency, reduce because of spare part performance mismatch and the system test difficulty that the spare part performance understanding brought thoroughly, can't in time respond to the promotion and the change scheduling problem of system power.
A pressure sensor is respectively arranged in front of and behind the circulating pump to be tested, and the difference value of the two pressure sensors is the pressure drop of the circulation at different rotating speeds. Meanwhile, a second flowmeter is arranged at the rear end of the circulating pump to be tested, so that the relation between the corresponding pressure difference and the flow of the circulating pump at different rotating speeds can be obtained, and the self capacity of the circulating pump can be obtained.
In one embodiment of the first aspect, the simulated fuel cell comprises a first buffer tank, a hydrogen-consuming unit and a second buffer tank, wherein an inlet of the first buffer tank is connected to an outlet of a solenoid valve, and the hydrogen-consuming unit and the second buffer tank are both connected to an outlet of the first buffer tank. The first buffer tank simulates a state that hydrogen enters the inside of the galvanic pile, and meanwhile, the consumption of the hydrogen flow of the galvanic pile can be simulated through the flow of the hydrogen consumption unit.
In one embodiment of the first aspect, the hydrogen-consuming unit includes a second ball valve, a first flow meter, and a hydrogen recovery device connected in series. Through adjusting the aperture of second ball valve, can adjust the flow to monitor through first flowmeter, so just can simulate the hydrogen of the fuel cell of different models and consume under different output, application scope is wider. And hydrogen is recycled by arranging the hydrogen recycling equipment, so that the waste of hydrogen is avoided, and the test cost is reduced.
In an embodiment of the first aspect, a third ball valve is disposed on a connection pipeline between the second buffer tank and the first buffer tank. The third ball valve and the second buffer tank are used for simulating the residual hydrogen amount after subtracting the consumed hydrogen amount from the inlet hydrogen amount and circulating the residual hydrogen amount to the main pipeline (namely simulating the fuel cell pipeline) through the circulating pipeline.
In one embodiment of the first aspect, a pressure sensor is provided at the inlet of the first buffer tank. The pressure sensor can monitor the pressure of hydrogen entering the first buffer tank, and the condition of the hydrogen entering the first buffer tank is consistent with the condition of a hydrogen inlet of the fuel cell in actual work by adjusting the proportional valve.
In one embodiment of the first aspect, a first ball valve is provided between the pressure reducing valve and the proportional valve. In the application, the pressure reducing valve is used for regulating the pressure of hydrogen at the outlet of the hydrogen source, the proportional valve is used for regulating and reducing the pressure of the hydrogen to 10-20bar, then the hydrogen enters the analog galvanic pile to simulate the pressure and flow numerical values, the electromagnetic valve is used for protecting the safety of the system, and when the pressure is not regulated to the adjustable range of the proportional valve by the pressure reducing valve, the electromagnetic valve is closed.
In one embodiment of the first aspect, the second flowmeter has a precision of ± 0.8% and a range ratio of 12.5-2500mL/min, so that the flow measurement range can be large, and a system with large power variation can be simulated and tested.
The application provides a method for accurately simulating hydrogen gas inflow, consumption and circulation: the front end proportional valve is adopted to control the flow and pressure of the inlet air, and the air inlet amount of the whole system can be controlled through the performance parameter characteristics of the proportional valve. Secondly, the value (namely the consumption value) of the flowmeter is adjusted by controlling the ball valve, so that the circulating flow of the circulating pump is obtained, and the value of the circulating flow is closer to the value of the circulating pump after the circulating pump is installed in the system.
Compared with the prior art, the invention has the beneficial effects that:
the phenomenon that the flow, the rotating speed and the pressure of the circulating pump after the circulating pump is arranged on the system are not matched with the parameters required by the system is solved, the control method of the hydrogen system is clearer, the system testing and debugging requirements are better matched, and the system command and the power increase are responded more quickly.
Drawings
Fig. 1 is a schematic connection diagram of the present application.
In the drawing, 1 is a hydrogen source, 2 is a pressure reducing valve, 3 is a first ball valve, 4 is a proportional valve, 5 is an electromagnetic valve, 6 is a first pressure sensor, 7 is a first buffer tank, 8 is a second ball valve, 9 is a first flow meter, 10 is a third ball valve, 11 is a second buffer tank, 12 is a second pressure sensor, 13 is a circulating pump to be measured, 14 is a second flow meter, and 15 is a third pressure sensor.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present 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 present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 present invention can be understood by those of ordinary skill in the art through specific situations.
In the existing circulating pump test, a circulating pump is directly connected with a hydrogen source, and the relation between the rotating speed of the circulating pump and the pressure difference and the flow is detected by adjusting the pressure and the flow at the inlet of the circulating pump. However, after the circulation pump is connected to the fuel cell system, the performance of the circulation pump tested by the method has deviation from the actual operation condition, and the circulation pump can be normally used after debugging. In view of the above problems, in order to improve the efficiency of the fuel cell system test work and reduce the problems of difficulty in system test, incapability of responding to the promotion and change of system power and the like caused by the mismatching of the performance of parts and the incomprehensive understanding of the performance of the parts, the application provides a method for testing the performance of a circulating pump under the working condition of an offline simulation system
Examples
The following will describe in detail the embodiments of the present invention, which are implemented on the premise of the technical solution of the present invention, and the detailed embodiments and the specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
A device for simulating the capacity of a circulating pump in a fuel cell system is structurally shown in figure 1 and comprises a hydrogen source 1, a pressure reducing valve 2, a first ball valve 3, a proportional valve 4, an electromagnetic valve 5, a first pressure sensor 6, a first buffer tank 7, a third ball valve 10 and a second buffer tank 11, wherein the hydrogen source, the pressure reducing valve, the first ball valve 3, the proportional valve 4, the electromagnetic valve 5, the first pressure sensor 6, the first buffer tank 7, the third ball valve 10 and the second buffer tank 11 are sequentially connected through stainless steel pipelines to form a main pipeline, and the second ball valve 8 and a first flow meter. The first buffer tank 7 simulates a state that hydrogen enters the interior of the galvanic pile, and meanwhile, the consumption of the hydrogen flow of the galvanic pile can be simulated by adjusting the second ball valve 8 to control the flow of the flow meter 9. A first pressure sensor 6 is arranged at the inlet of a first buffer tank 7 of the simulation cell stack, and the inlet pressure range of the first buffer tank 7 is monitored, so that the inlet pressure range of the first buffer tank 7 does not exceed 2bar, and the inlet pressure range is closer to the inlet pressure value of the actual test cell stack.
The second pressure sensor 12 and the third pressure sensor 15 are respectively arranged in front of and behind the circulating pump 13 to be tested, and the difference value between the two pressure sensors is the pressure drop of the circulating pump at different rotating speeds. Meanwhile, a second flowmeter 14 is added at the rear end of the circulating pump 13 to be tested, so that the relation between the corresponding pressure difference and the flow of the circulating pump 13 to be tested at different rotating speeds can be obtained, and the self capacity of the circulating pump can be obtained. The accuracy of the second flowmeter 14 is +/-0.8%, and the range ratio is 200:1, so that the numerical range of the measured flow is large, and a system with large power variation can be simulated and tested.
The test data obtained by the above apparatus are as follows:
comparative example
Directly connecting the circulating pump to be tested with a hydrogen source, and testing the performance data of the circulating pump to be tested, wherein the result is as follows:
when the circulating pump to be tested is put into an actual fuel cell system, it can be found that the operation data of the circulating pump is very close to the detection data of the embodiment 1, while the comparative example 1 can only be explored by the self-capability of the circulating pump, and can not be matched with the current and power changes of the system, which is not in accordance with the actual situation.
The embodiments described above are intended to facilitate the understanding and appreciation of the application by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present application is not limited to the embodiments herein, and those skilled in the art who have the benefit of this disclosure will appreciate that many modifications and variations are possible within the scope of the present application without departing from the scope and spirit of the present application.
Claims (7)
1. The utility model provides a device of circulating pump ability in simulation fuel cell system, a serial communication port, the device is including simulation fuel cell pipeline and circulation pipeline, wherein, simulation fuel cell pipeline is including hydrogen source, relief pressure valve, proportional valve, solenoid valve and the simulation fuel cell who connects gradually, circulation pipeline's entrance point and simulation fuel cell's exit linkage, circulation pipeline's exit end circular connection is in the import department of solenoid valve, be connected with the circulating pump that awaits measuring in the circulation pipeline, all be equipped with pressure sensor in the import of the circulating pump that awaits measuring and exit, be equipped with the second flowmeter in the exit of the circulating pump that awaits measuring.
2. An apparatus for simulating the capacity of a circulation pump in a fuel cell system according to claim 1, wherein the simulated fuel cell comprises a first buffer tank, a hydrogen-consuming unit and a second buffer tank, wherein an inlet of the first buffer tank is connected to an outlet of a solenoid valve, and the hydrogen-consuming unit and the second buffer tank are both connected to an outlet of the first buffer tank.
3. An apparatus for simulating the capacity of a circulation pump in a fuel cell system according to claim 2, wherein the hydrogen-consuming unit comprises a second ball valve, a first flow meter and a hydrogen recovery device connected in sequence.
4. The apparatus for simulating the capacity of a circulation pump in a fuel cell system according to claim 2, wherein a third ball valve is provided on a connection pipe between the second buffer tank and the first buffer tank.
5. An apparatus for simulating the capacity of a circulation pump in a fuel cell system as claimed in claim 2, wherein a pressure sensor is provided at the inlet of the first buffer tank.
6. An apparatus for simulating the capacity of a circulation pump in a fuel cell system as claimed in claim 1, wherein a first ball valve is provided between the pressure reducing valve and the proportional valve.
7. An apparatus for modeling the capacity of a circulation pump in a fuel cell system as claimed in claim 1, wherein the accuracy of the second flow meter is ± 0.8%, and the span ratio is 12.5-2500 mL/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011593249.XA CN112687920A (en) | 2020-12-29 | 2020-12-29 | Device for simulating circulating pump capacity in fuel cell system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011593249.XA CN112687920A (en) | 2020-12-29 | 2020-12-29 | Device for simulating circulating pump capacity in fuel cell system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114744254A (en) * | 2022-04-28 | 2022-07-12 | 武汉雄韬氢雄燃料电池科技有限公司 | Modeling method of hydrogen circulating pump in fuel cell system |
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| CN110578679A (en) * | 2019-09-24 | 2019-12-17 | 无锡威孚高科技集团股份有限公司 | Testing device of gas circulating pump |
| CN210243168U (en) * | 2019-09-03 | 2020-04-03 | 佛山市清极能源科技有限公司 | All-round fuel cell hydrogen system testboard |
| CN111816898A (en) * | 2020-08-06 | 2020-10-23 | 上海燃锐新能源汽车技术有限公司 | Test system for quick response capability of fuel cell hydrogen supply circulating device |
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0249984A (en) * | 1988-08-10 | 1990-02-20 | Toyoda Gosei Co Ltd | Pump testing device |
| US20040081864A1 (en) * | 2002-07-10 | 2004-04-29 | Manfred Herrmann | Method and apparatus for the investigation of a fuel cell system |
| JP2007024015A (en) * | 2005-07-21 | 2007-02-01 | Toyota Industries Corp | Hydrogen circulating pump and fuel cell system using hydrogen circulating pump |
| CN201763589U (en) * | 2010-04-21 | 2011-03-16 | 上海易齐节能科技有限公司 | High-efficiency dynamic correcting and energy-saving system for working condition point of fluid circulating pump |
| US20190217845A1 (en) * | 2016-09-27 | 2019-07-18 | Brother Kogyo Kabushiki Kaisha | Fuel cell system, control method of fuel cell system, and computer program |
| CN208330695U (en) * | 2018-05-23 | 2019-01-04 | 天津捷强动力装备股份有限公司 | A kind of pneumatics apparatus test device for simulating applying working condition |
| CN110336059A (en) * | 2019-03-29 | 2019-10-15 | 上海楞次新能源汽车科技有限公司 | A kind of the pressure oscillation test device and method of fuel cell hydrogen circulating pump |
| CN210243168U (en) * | 2019-09-03 | 2020-04-03 | 佛山市清极能源科技有限公司 | All-round fuel cell hydrogen system testboard |
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| CN111816898A (en) * | 2020-08-06 | 2020-10-23 | 上海燃锐新能源汽车技术有限公司 | Test system for quick response capability of fuel cell hydrogen supply circulating device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114744254A (en) * | 2022-04-28 | 2022-07-12 | 武汉雄韬氢雄燃料电池科技有限公司 | Modeling method of hydrogen circulating pump in fuel cell system |
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Application publication date: 20210420 |