CN212111503U - Wide-range test system - Google Patents
Wide-range test system Download PDFInfo
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- CN212111503U CN212111503U CN202020309035.4U CN202020309035U CN212111503U CN 212111503 U CN212111503 U CN 212111503U CN 202020309035 U CN202020309035 U CN 202020309035U CN 212111503 U CN212111503 U CN 212111503U
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Abstract
The utility model discloses a wide-range testing system, which comprises a hydrogen tank, a pressure reducing pipeline, a pressure reducing valve, a plurality of flow regulating pipelines connected in parallel and a fuel cell engine; the hydrogen tank loops through the pressure reducing pipeline and the flow regulating pipeline to be connected with the hydrogen inlet of the fuel cell engine, the pressure reducing valve is installed on the pressure reducing pipeline, at least one flow meter and at least one check valve are installed on each flow regulating pipeline, the check valve is installed at the outlet end of the flow meter, and each flow meter has different measuring ranges. The utility model has the advantages that: the utility model discloses hydrogen after will decompressing can be through a plurality of parallelly connected branches input fuel cell engine, selects for use the flowmeter of different ranges, different flow levels on different branches, and every branch road all can the autonomous working, can reach a branch road during operation again, and the state that all the other branch roads are closed can satisfy the test of different ranges and wide range, can guarantee measurement accuracy again simultaneously.
Description
Technical Field
The utility model relates to a fuel cell test system especially relates to a test system of a wide range.
Background
The fuel cell is a chemical device which directly converts chemical energy of fuel into electric energy, and in the process of developing the fuel cell, the developed fuel cell needs to be subjected to performance test, so that a test platform needs to be used for carrying out test detection on the fuel cell.
At present, test platforms are mostly in low range (that is, only fuel cells in a small range of power range can be tested), the test requirements of fuel cell manufacturers on subsequent high-power fuel cells cannot be met, the test requirements of subsequent large range cannot be met, if fuel cells in other ranges or wider ranges need to be measured, the test platforms need to be replaced, each test platform has limitations, therefore, more test platforms are needed, and the equipment investment cost is high;
or, the existing large-range test platform has a complex structure, a complex test flow, a high price and a long after-sale service period.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: how to solve the problem that the test platform of low-range in the prior art can not meet the subsequent high-power fuel cell test requirements of fuel cell manufacturers.
The utility model discloses a following technical means realizes solving above-mentioned technical problem:
a wide-range testing system comprises a hydrogen tank, a pressure reducing pipeline, a pressure reducing valve, a plurality of flow regulating pipelines connected in parallel and a fuel cell engine; the hydrogen tank loops through the pressure reducing pipeline and the flow adjusting pipeline to be connected with a hydrogen inlet of the fuel cell engine, the flow meters with gradient measuring ranges are respectively installed on the flow adjusting pipeline, the pressure reducing valve is installed on the pressure reducing pipeline, each flow adjusting pipeline is provided with at least one flow meter and at least one check valve, and the check valves are installed at outlet ends of the flow meters.
The hydrogen in the hydrogen tank is decompressed through the decompression valve and the decompression pipeline so as to meet the requirement of the hydrogen pressure at the inlet of the fuel cell engine, and the decompressed hydrogen is input into the hydrogen inlet of the fuel cell engine through a plurality of parallel branches; in order to avoid the phenomena of hydrogen non-uniform flow and turbulent flow when two pipelines work simultaneously, and the measurement precision cannot be ensured, therefore, each branch circuit independently works through a control check valve, and the test precision of each branch circuit is ensured in the state that the rest branch circuits are closed when one branch circuit works; the flowmeter with the gradient measuring range can meet the testing requirements of fuel cell engines with different power sections and can enlarge the testing range; therefore, the flow meters with different measuring ranges and each branch circuit work independently, the large-range test is realized, and the measuring precision can be ensured.
Preferably, the number of the pressure reducing valves is at least two. The pressure can be reduced for many times according to the requirement, and the use safety is ensured.
Preferably, the device further comprises a stop valve, wherein the stop valve is arranged on the pressure reducing pipeline and is positioned in front of the inlet end of the pressure reducing valve.
Preferably, the device further comprises a filter, wherein the filter is arranged on the pressure reducing pipeline and is positioned between the pressure reducing valve and the stop valve. The filter can filter impurities and dust in the hydrogen, and ensures the purity and the safety.
Preferably, each flow regulating pipeline further comprises an explosion-proof valve, and the flow meter is installed between the explosion-proof valve and the check valve. The safety is ensured.
Preferably, the explosion-proof valve is an explosion-proof electromagnetic valve.
Preferably, the device further comprises a pressure sensor, and the pressure sensor is arranged in the pressure reducing pipeline.
Preferably, the system further comprises a cooling tower and a plurality of heat exchangers connected in parallel, wherein the heat exchange circulating system in the fuel cell engine is respectively connected with the plurality of heat exchangers, and the cooling tower is respectively connected with the plurality of heat exchangers.
Preferably, the cooling tower further comprises a plurality of regulating valves, and the regulating valves are arranged on the pipelines between the heat exchanger and the cooling tower.
The fuel cell engine works circularly through the water pump and continuously brings heat into the heat exchanger; cooling water of the cooling tower is sent into the heat exchanger from the other side of the heat exchanger, and heat exchange is carried out in the heat exchanger, so that the temperature of one side of the fuel cell engine is controlled, and the purpose of controlling the temperature is achieved;
the heat exchangers adopt a multi-group parallel connection mode, and corresponding groups can be started according to the heat productivity of the engine, so that preliminary energy adjustment is carried out; and regulating valves are arranged on each group of heat exchanger pipelines to perform more accurate control and regulation, so that the heat exchange quantity of the heat exchangers is balanced with the heat productivity of the engine.
Preferably, the heat exchanger is a plate heat exchanger.
The utility model has the advantages that:
(1) the hydrogen in the hydrogen tank is decompressed through the decompression valve and the decompression pipeline so as to meet the requirement of the hydrogen pressure at the inlet of the fuel cell engine, and the decompressed hydrogen is input into the hydrogen inlet of the fuel cell engine through a plurality of parallel branches; in order to avoid the phenomena of hydrogen non-uniform flow and turbulent flow when two pipelines work simultaneously, and the measurement precision cannot be ensured, therefore, each branch circuit independently works through a control check valve, and the test precision of each branch circuit is ensured in the state that the rest branch circuits are closed when one branch circuit works; the flowmeter with the gradient measuring range can meet the testing requirements of fuel cell engines with different power sections and can enlarge the testing range; therefore, the flow meters with different measuring ranges and each branch circuit work independently, so that the large-range test is realized, and the measuring precision can be ensured;
(2) the filter can filter impurities and dust in the hydrogen, so that the purity and the safety are ensured;
(3) the fuel cell engine works circularly through the water pump and continuously brings heat into the heat exchanger; cooling water of the cooling tower is sent into the heat exchanger from the other side of the heat exchanger, and heat exchange is carried out in the heat exchanger, so that the temperature of one side of the fuel cell engine is controlled, and the purpose of controlling the temperature is achieved; the heat exchangers adopt a multi-group parallel connection mode, and corresponding groups can be started according to the heat productivity of the engine, so that preliminary energy adjustment is carried out; regulating valves are arranged on each group of heat exchanger pipelines for more accurate control and regulation, and finally the heat exchange quantity of the heat exchangers is balanced with the heat productivity of the engine;
(4) the utility model discloses the measuring platform of well wide range adopts many branch design implementation methods at hydrogen supply system, water cooling system, not only satisfies high-power engine test needs, and can satisfy the downward compatible test needs of power grade equally to can guarantee different power ends and detect the precision.
Drawings
Fig. 1 is a schematic structural diagram of a wide-range test system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a wide-range test system according to a second embodiment;
FIG. 3 is a schematic structural diagram of a wide-range test system in the third embodiment.
Reference numbers in the figures: the hydrogen tank 1, the first stop valve 11, the first pressure reducing valve 12, the second stop valve 13, the second pressure reducing valve 14, the explosion-proof valve 15, the flow meter 16, the check valve 17, the filter 18, the fuel cell engine 2, the cooling tower 3, the heat exchanger 4, and the regulating valve 41.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, a wide-range testing system comprises a hydrogen tank 1, a pressure reducing pipeline, a first stop valve 11, a first pressure reducing valve 12, a second stop valve 13, a second pressure reducing valve 14, a plurality of flow regulating pipelines connected in parallel, an explosion-proof valve 15, a flow meter 16, a check valve 17 and a fuel cell engine 2;
the hydrogen tank 1 is connected with a hydrogen inlet of a fuel cell engine sequentially through a pressure reducing pipeline and a flow regulating pipeline, in the embodiment, two times of pressure reduction are carried out, the first-stage pressure reduction comprises a first stop valve 11 and a first pressure reducing valve 12, and the second-stage pressure reduction comprises a second stop valve 13 and a second pressure reducing valve 14; as shown in fig. 1, a first stop valve 11, a first pressure reducing valve 12, a second stop valve 13 and a second pressure reducing valve 14 are arranged on the pressure reducing pipeline from left to right; taking a hydrogen tank with a pressure of 15Mpa as an example, the nominal pressure of the first stop valve 11 is more than or equal to 15Mpa, the inlet pressure of the first pressure reducing valve 12 is 15Mpa, the outlet pressure is 2Mpa (adjustable to other pressure values), the nominal pressure of the second stop valve 13 is more than or equal to 2Mpa, the inlet pressure of the second pressure reducing valve 14 is 0-3Mpa, and the outlet pressure is 0-1Mpa (adjustable to other pressure values); wherein, the first-stage pressure reduction and the second-stage pressure reduction can be remotely transported through pipelines; the pressure reducing assembly is used to reduce the pressure of the hydrogen in the hydrogen tank 1 to a required pressure and is adjustable.
Wherein, the stop valve and the pressure reducing valve can be in manual operation specifications; and multiple times of decompression can be performed according to requirements, so that the use safety is ensured.
In addition, a pressure sensor is arranged in the pressure reducing pipeline, so that the pressure monitoring is facilitated.
As shown in fig. 1, a plurality of flow regulating pipelines connected in parallel are connected behind the pressure reducing assembly, each flow regulating pipeline is provided with at least one explosion-proof valve 15, at least one flow meter 16 and at least one check valve 17, the explosion-proof valve 15 is arranged in front of the inlet end of the flow meter 16, the check valve 17 is arranged behind the outlet end of the flow meter 16, and each flow meter 16 has different measuring ranges and different flow grades. In the embodiment, the flow meter 16 with the largest measuring range is 4000slpm and is suitable for a 200KW fuel cell engine, the flow meter 16 with the smallest measuring range is 600slpm and is suitable for a 30KW fuel cell engine, and the rest flow meters are selected in a gradient manner from 600slpm to 4000 slpm.
Wherein, the explosion-proof valve 15 is an explosion-proof electromagnetic valve.
In the embodiment, hydrogen in the hydrogen tank 1 is decompressed in the decompression pipeline through the decompression valve 11 so as to meet the requirement of the hydrogen pressure at the inlet of the fuel cell engine, and the decompressed hydrogen is input to the hydrogen inlet of the fuel cell engine through a plurality of branches connected in parallel; in order to avoid the phenomena of hydrogen non-uniform flow and turbulent flow when two or more pipelines work simultaneously and cannot ensure the measurement precision, each branch circuit must work independently, and the test precision of each branch circuit is ensured by controlling the state that the rest branch circuits are closed when one branch circuit works;
the flowmeter with the gradient measuring range can meet the testing requirements of fuel cell engines with different power sections and meet the testing of a large measuring range; therefore, the flow meters with different measuring ranges and each branch circuit work independently, the large-range test is realized, and the measuring precision can be ensured.
Example two:
as shown in fig. 2, based on the first embodiment, the wide-range testing platform further includes a filter 18, and the filter 18 is installed on the pressure reducing pipe and located between the second pressure reducing valve 14 and the second stop valve 13.
The filter 18 can filter impurities and dust in the hydrogen gas, and ensures the purity and the safety.
Example three:
as shown in fig. 3, on the basis of the first or second embodiment, the wide-range testing platform further includes a cooling tower 3 and a plurality of heat exchangers 4 connected in parallel, the heat exchange circulation system in the fuel cell engine is respectively connected with the plurality of heat exchangers, and the cooling tower is respectively connected with the plurality of heat exchangers.
The wide range test platform also includes a plurality of regulating valves 41, the regulating valves 41 being mounted on the piping between the heat exchanger 4 and the cooling tower 3. The regulating valve 41 may be a proportional regulating valve.
The fuel cell engine 2 works circularly through a water pump, and continuously brings heat into the heat exchanger 4; cooling water of the cooling tower 3 is sent into the heat exchanger 4 from the other side of the heat exchanger, and heat exchange is carried out in the heat exchanger 4, so that the temperature of one side of the fuel cell engine is controlled, and the purpose of controlling the temperature is achieved;
the heat exchangers adopt a multi-group parallel connection mode, and corresponding groups can be started according to the heat productivity of the engine, so that preliminary energy adjustment is carried out; and adjusting valves 41 are arranged on each group of heat exchanger pipelines for more accurate control and adjustment, and finally the heat exchange quantity of the heat exchangers is balanced with the heat productivity of the engine.
Preferably, the heat exchanger 4 is a plate heat exchanger. In order to facilitate adjustment and control, each group of plate heat exchangers has the same size, and the design parameters are completely the same.
In order to meet the requirement of the refrigerating capacity of a high-power engine, the heat exchanger needs to be designed according to the parameters of the maximum power engine;
the implementation manner of the wide-range high-precision test platform design in the embodiment is as follows: the hydrogen supply system and the water cooling system are required to select corresponding branches for matching in advance according to the power of the tested engine, so that the calculated efficiency value of the engine is ensured to be higher, and a more stable reaction environment is ensured to be provided for the engine.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A wide-range testing system is characterized by comprising a hydrogen tank, a pressure reducing pipeline, a pressure reducing valve, a plurality of flow regulating pipelines connected in parallel and a fuel cell engine; the hydrogen tank loops through the pressure reducing pipeline and the flow adjusting pipeline to be connected with a hydrogen inlet of the fuel cell engine, the flow meters with gradient measuring ranges are respectively installed on the flow adjusting pipeline, the pressure reducing valve is installed on the pressure reducing pipeline, each flow adjusting pipeline is provided with at least one flow meter and at least one check valve, and the check valves are installed at outlet ends of the flow meters.
2. A wide range test system according to claim 1 wherein the pressure relief valves are at least two.
3. A wide range testing system according to claim 1, further comprising a shut-off valve mounted on the pressure relief conduit and located before the inlet end of the pressure relief valve.
4. A wide range testing system according to claim 3 and further comprising a filter mounted on the pressure reducing conduit between the pressure reducing valve and the shut-off valve.
5. A wide range testing system according to claim 1 and further comprising an explosion-proof valve on each flow regulating conduit, the flow meter being mounted between the explosion-proof valve and the check valve.
6. A wide range test system according to claim 5 wherein said explosion-proof valve is an explosion-proof solenoid valve.
7. The wide range testing system of claim 1, further comprising a pressure sensor mounted within the pressure relief conduit.
8. The wide-range testing system according to claim 1, further comprising a cooling tower and a plurality of heat exchangers connected in parallel, wherein the heat exchange circulation system in the fuel cell engine is connected with the plurality of heat exchangers respectively, and the cooling tower is connected with the plurality of heat exchangers respectively.
9. The wide range testing system of claim 8, further comprising a plurality of regulating valves mounted on the piping between the heat exchanger and the cooling tower.
10. The wide range testing system of claim 8, wherein the heat exchanger is a plate heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020309035.4U CN212111503U (en) | 2020-03-11 | 2020-03-11 | Wide-range test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020309035.4U CN212111503U (en) | 2020-03-11 | 2020-03-11 | Wide-range test system |
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| CN212111503U true CN212111503U (en) | 2020-12-08 |
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| CN202020309035.4U Active CN212111503U (en) | 2020-03-11 | 2020-03-11 | Wide-range test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112859938A (en) * | 2021-01-15 | 2021-05-28 | 北京动力机械研究所 | Alcohol adjusting system and control method for high enthalpy engine test bed facility |
| CN114236045A (en) * | 2021-11-30 | 2022-03-25 | 三一汽车制造有限公司 | Hydrogen quality detection system, control method and device thereof, and hydrogen supply system |
-
2020
- 2020-03-11 CN CN202020309035.4U patent/CN212111503U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112859938A (en) * | 2021-01-15 | 2021-05-28 | 北京动力机械研究所 | Alcohol adjusting system and control method for high enthalpy engine test bed facility |
| CN112859938B (en) * | 2021-01-15 | 2023-09-08 | 北京动力机械研究所 | Alcohol adjusting system and control method for high-enthalpy engine test bed facility |
| CN114236045A (en) * | 2021-11-30 | 2022-03-25 | 三一汽车制造有限公司 | Hydrogen quality detection system, control method and device thereof, and hydrogen supply system |
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| GR01 | Patent grant | ||
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| CP02 | Change in the address of a patent holder |
Address after: No.8 Dalong Road, hi tech Zone, Hefei City, Anhui Province Patentee after: Hefei Kewei Power System Co.,Ltd. Address before: 230088 Building 2, Hupu Industrial Park, No. 4715, Wangjiang West Road, hi tech Zone, Hefei City, Anhui Province Patentee before: Hefei Kewei Power System Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 230088 No.8 DALONGSHAN Road, hi tech Zone, Hefei City, Anhui Province Patentee after: Hefei Kewei Power System Co.,Ltd. Address before: 230088 Building 2, Hupu Industrial Park, No. 4715, Wangjiang West Road, hi tech Zone, Hefei City, Anhui Province Patentee before: Hefei Kewei Power System Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230088 No.8 DALONGSHAN Road, hi tech Zone, Hefei City, Anhui Province Patentee after: Cowell Technology Co.,Ltd. Address before: 230088 No.8 DALONGSHAN Road, hi tech Zone, Hefei City, Anhui Province Patentee before: Hefei Kewei Power System Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |