CN216410551U - Sealing test device of solid oxide fuel cell - Google Patents
Sealing test device of solid oxide fuel cell Download PDFInfo
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- CN216410551U CN216410551U CN202220088014.3U CN202220088014U CN216410551U CN 216410551 U CN216410551 U CN 216410551U CN 202220088014 U CN202220088014 U CN 202220088014U CN 216410551 U CN216410551 U CN 216410551U
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- electromagnetic valve
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- pressure sensor
- solid oxide
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- 238000007789 sealing Methods 0.000 title claims abstract description 41
- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 239000000446 fuel Substances 0.000 title claims abstract description 28
- 239000007787 solid Substances 0.000 title claims abstract description 27
- 238000005485 electric heating Methods 0.000 claims abstract description 24
- 230000008859 change Effects 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 32
- 239000011261 inert gas Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
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- Fuel Cell (AREA)
Abstract
The utility model relates to the technical field of solid oxide fuel cells, in particular to a sealing test device of a solid oxide fuel cell. The device comprises an air storage tank, an air inlet pipeline, a first electromagnetic valve, a mass flowmeter, a pressure sensor, an electric heating furnace and a controller; the first electromagnetic valve, the mass flowmeter and the pressure sensor are sequentially arranged on the air inlet pipeline along the air inlet direction; the tail end of the air inlet pipeline is connected with an air inlet of a cell stack to be tested, and the cell stack to be tested is arranged in the electric heating furnace; the controller is used for: controlling the opening and closing of a first electromagnetic valve, setting the flow of a mass flow device, receiving a real-time pressure value detected by a pressure sensor and controlling the heating temperature of the electric heating furnace; and according to the change relation between the real-time pressure value and the time, representing the sealing performance of the battery stack to be tested. The scheme provided by the utility model can ensure that the sealing test of the solid oxide fuel cell is more accurate.
Description
Technical Field
The embodiment of the utility model relates to the technical field of solid oxide fuel cells, in particular to a sealing test device of a solid oxide fuel cell.
Background
A Solid Oxide Fuel Cell (SOFC), also known as a ceramic fuel cell, is a device that electrochemically converts the energy of a fuel gas (e.g., hydrogen, natural gas, methane, methanol, gasoline, etc.) and an oxidizing gas (e.g., air or oxygen) into usable electrical energy. The solid oxide fuel cell is an all-solid-state structure formed by sintering an electrolyte, an anode and a cathode at high temperature. In general, a solid oxide fuel cell is assembled into a stack to form a power generation device. The stack is composed of a stack of several cell sheets and seals for confining the fuel gas and the oxidizing gas within the respective channels. When the cell stack is used, a certain pre-pressure needs to be applied to all the cell sheets so as to ensure the sealing effect of the cell stack.
The stack is typically subjected to thermo-mechanical stresses caused by high operating temperatures and potentially rapid temperature cycling. These stresses can cause deformation of the components of the stack and adversely affect the operational reliability and life of the stack. For example, the sealing efficiency of the seal member after deformation of the seal member affects the gas utilization rate, and the low sealing efficiency also causes hot spots, large temperature difference, and reduction in the power output and life of the stack. Therefore, the sealing performance of the seal member has a crucial influence on the electrochemical function of the stack and the life thereof, and the sealing performance of the stack needs to be strictly measured before the seal member is applied to the stack.
In the related art, the sealing test of the solid oxide fuel cell is mainly directed to a sealing member and a sealing material required for preparing the sealing member. However, the sealing performance of the solid oxide fuel cell is also affected due to the assembly process of the cell stack. Therefore, a new sealing test device for solid oxide fuel cell is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a sealing test device of a solid oxide fuel cell, which can ensure that the sealing test of the solid oxide fuel cell is more accurate.
The embodiment of the utility model provides a sealing test device of a solid oxide fuel cell, which comprises a gas storage tank, a gas inlet pipeline, a first electromagnetic valve, a mass flowmeter, a pressure sensor, an electric heating furnace and a controller, wherein the gas storage tank is connected with the gas inlet pipeline;
the first electromagnetic valve, the mass flowmeter and the pressure sensor are sequentially arranged on the air inlet pipeline along the air inlet direction;
the tail end of the air inlet pipeline is connected with an air inlet of a cell stack to be tested, the cell stack to be tested is a solid oxide fuel cell, and the cell stack to be tested is arranged in the electric heating furnace;
the controller is respectively electrically connected with the first electromagnetic valve, the mass flow meter, the pressure sensor and the electric heating furnace and is used for: controlling the opening and closing of the first electromagnetic valve, setting the flow of the mass flow device, receiving a real-time pressure value detected by the pressure sensor and controlling the heating temperature of the electric heating furnace;
and according to the change relation between the real-time pressure value and the time, representing the sealing performance of the battery stack to be tested.
In a possible design, the air storage tank further comprises a pressure reducing valve, wherein the pressure reducing valve is arranged on the air inlet pipeline and is arranged between the air storage tank and the first electromagnetic valve.
In a possible design, the device further comprises a buffer tank, wherein the buffer tank is arranged on the air inlet pipeline and between the mass flow meter and the cell stack to be detected, and the pressure sensor is used for detecting a real-time pressure value in the buffer tank.
In a possible design, the device further comprises an air outlet pipeline and a second electromagnetic valve arranged on the air outlet pipeline, wherein the air outlet pipeline is connected to an air outlet of the battery stack to be tested, and the second electromagnetic valve is electrically connected with the controller.
In a possible design, the testing device further comprises a safety valve, wherein the safety valve is arranged on the air outlet pipeline and is arranged between the battery stack to be tested and the second electromagnetic valve.
In one possible design, the system further comprises an upper computer, wherein the upper computer is electrically connected with the controller and used for sending a control instruction to the controller.
The embodiment of the utility model provides a sealing test device of a solid oxide fuel cell, which is characterized in that a cell stack to be tested is placed in an electric heating furnace as a whole, and the electric heating furnace provides a high-temperature environment for the cell stack to be tested, so that the whole sealing performance of the cell stack to be tested can be tested by inputting inert gas into the cell stack to be tested, the sealing performance of the solid oxide fuel cell is prevented from being influenced by the assembly process of the cell stack, and the sealing test of the solid oxide fuel cell can be ensured to be more accurate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a system schematic diagram of a seal testing apparatus for a solid oxide fuel cell according to an embodiment of the present invention.
Description of the drawings:
1-a gas storage tank; 2-an air inlet pipeline; 3-a first solenoid valve; 4-a mass flow meter; 5-a pressure sensor; 6-electric heating furnace; 7-a controller; 8-a pressure reducing valve; 9-a buffer tank; 10-gas outlet pipeline; 11-a second solenoid valve; 12-a safety valve; 13-an upper computer;
100-a cell stack to be tested; 101-an air inlet; 102-air outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a sealing test apparatus for a solid oxide fuel cell, the apparatus includes a gas storage tank 1, a gas inlet pipeline 2, a first electromagnetic valve 3, a mass flow meter 4, a pressure sensor 5, an electric heating furnace 6 and a controller 7;
the gas storage tank 1 is internally stored with inert gas, the gas storage tank 1 is connected with the gas inlet pipeline 2, and the first electromagnetic valve 3, the mass flow meter 4 and the pressure sensor 5 are sequentially arranged on the gas inlet pipeline 2 along the gas inlet direction;
the tail end of the air inlet pipeline 2 is connected with an air inlet 101 of a cell stack 100 to be tested, the cell stack 100 to be tested is a solid oxide fuel cell, and the cell stack 100 to be tested is arranged in the electric heating furnace 6;
the controller 7 is respectively electrically connected with the first electromagnetic valve 3, the mass flow meter 4, the pressure sensor 5 and the electric heating furnace 6, and is used for: controlling the opening and closing of the first electromagnetic valve 3, setting the flow of the mass flow device 4, receiving a real-time pressure value detected by the pressure sensor 5 and controlling the heating temperature of the electric heating furnace 6;
and representing the sealing performance of the battery stack 100 to be tested according to the change relation between the real-time pressure value and the time.
In the embodiment of the utility model, the cell stack 100 to be tested is placed in the electric heating furnace 6 as a whole, and the electric heating furnace 6 provides a high-temperature environment for the cell stack 100 to be tested, so that the test of the whole sealing performance of the cell stack 100 to be tested can be realized by inputting inert gas into the cell stack 100 to be tested, the sealing performance of the solid oxide fuel cell is prevented from being influenced by the assembly process of the cell stack, and the sealing test of the solid oxide fuel cell can be ensured to be more accurate.
The embodiment of the utility model can ensure the test safety of the cell stack 100 to be tested by selecting the inert gas. In some embodiments, inert gases include, but are not limited to, argon, nitrogen, helium.
In the embodiment of the utility model, the controller 7 is arranged to control the first electromagnetic valve 3, the mass flow device 4, the pressure sensor 5 and the electric heating furnace 6 by using the controller 7, so that the test of testers can be facilitated.
Since the cell stack 100 to be tested is sensitive to pressure impact, the mass flow meter 4 is provided in the embodiment of the present invention, so as to ensure that the flow rate of the inert gas introduced into the cell stack 100 to be tested is stable, so as to slowly increase the gas pressure of the cell stack 100 to be tested, which can ensure the test accuracy of the cell stack 100 to be tested.
According to the embodiment of the utility model, the sealing performance of the battery stack 100 to be tested is represented according to the change relation between the real-time pressure value and the time. For example, if the real-time pressure value changes by 10Pa within 10s, the gas leakage rate is 1 Pa/s. The lower the gas leakage rate, the better the sealing performance of the stack 100 under test, and vice versa.
In an embodiment of the present invention, the sealing test apparatus further includes a pressure reducing valve 8, and the pressure reducing valve 8 is disposed on the air intake pipeline 2 and between the air storage tank 1 and the first electromagnetic valve 3.
In the embodiment of the utility model, the pressure reducing valve 8 is arranged, so that the first electromagnetic valve 3 can be prevented from being damaged due to overlarge gas flow from the gas storage tank 1.
In an embodiment of the present invention, the sealing test apparatus further includes a buffer tank 9, the buffer tank 9 is disposed on the air inlet pipeline 2 and disposed between the mass flow meter 4 and the cell stack 100 to be tested, and the pressure sensor 5 is configured to detect a real-time pressure value in the buffer tank 9.
In the embodiment of the utility model, because the cell stack 100 to be tested is sensitive to the impact of pressure, the pressure fluctuation entering the cell stack 100 to be tested can be ensured to be maintained at a lower level by arranging the buffer tank 9, so that the test accuracy of the cell stack 100 to be tested can be ensured.
In an embodiment of the present invention, the sealing test apparatus further includes an air outlet pipeline 10 and a second electromagnetic valve 11 disposed on the air outlet pipeline 10, the air outlet pipeline 10 is connected to an air outlet 102 of the to-be-tested battery stack 100, and the second electromagnetic valve 11 is electrically connected to the controller 7.
In the embodiment of the utility model, the gas outlet pipeline 10 is arranged, so that the inert gas in the cell stack 100 to be tested can be conveniently discharged after the test is finished; through setting up second solenoid valve 11, be favorable to realizing opening and close of second solenoid valve 11 through controller 7.
In an embodiment of the present invention, the sealing test apparatus further includes a safety valve 12, and the safety valve 12 is disposed on the gas outlet pipeline 10 and between the cell stack 100 to be tested and the second electromagnetic valve 11.
In the embodiment of the present invention, since the cell stack 100 to be tested is sensitive to pressure shock, the safety valve 12 can prevent the cell stack 100 to be tested from being damaged due to sudden pressure increase of the air inlet pipeline 2.
In an embodiment of the present invention, the sealing test apparatus further includes an upper computer 13, and the upper computer 13 is electrically connected to the controller 7 and configured to send a control instruction to the controller 7.
In the embodiment of the utility model, the remote control of the controller 7 can be realized by arranging the upper computer 13, so that the test of a tester is facilitated.
The working method of the sealing test device is described as follows:
step S1, connecting the components according to the connection relationship shown in fig. 1, and placing the battery stack 100 to be tested in the electric heating furnace 6;
step S2, the upper computer 13 controls the controller 7 to set a temperature-raising program of the electric heating furnace 6, so that the electric heating furnace is raised to a preset temperature (for example, a high temperature of 600 ℃);
step S3, adjusting the pressure reducing valve 8, and opening a valve of the gas storage tank 1;
step S4, the upper computer 13 controls the controller 7 to open the first electromagnetic valve 3 and close the second electromagnetic valve 11, and adjusts the set flow of the mass flow meter 4 to slowly increase the pressure of the air inlet pipeline 2;
step S5, when the pressure sensor 5 reaches the set pressure, the upper computer 13 controls the controller 7 to close the first electromagnetic valve 3;
and step S6, automatically recording the change of the value of the pressure sensor 5 along with time through the upper computer 14, and calculating the leakage rate of the battery stack 100 to be tested so as to represent the sealing performance of the battery stack 100 to be tested by utilizing the leakage rate.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other similar elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The sealing test device of the solid oxide fuel cell is characterized by comprising a gas storage tank (1), a gas inlet pipeline (2), a first electromagnetic valve (3), a mass flow device (4), a pressure sensor (5), an electric heating furnace (6) and a controller (7);
inert gas is stored in the gas storage tank (1), the gas storage tank (1) is connected with the gas inlet pipeline (2), and the first electromagnetic valve (3), the mass flow meter (4) and the pressure sensor (5) are sequentially arranged on the gas inlet pipeline (2) along the gas inlet direction;
the tail end of the air inlet pipeline (2) is connected with an air inlet (101) of a cell stack (100) to be tested, the cell stack (100) to be tested is a solid oxide fuel cell, and the cell stack (100) to be tested is arranged in the electric heating furnace (6);
the controller (7) is respectively electrically connected with the first electromagnetic valve (3), the mass flow meter (4), the pressure sensor (5) and the electric heating furnace (6) and is used for: controlling the opening and closing of the first electromagnetic valve (3), setting the flow of the mass flow meter (4), receiving a real-time pressure value detected by the pressure sensor (5) and controlling the heating temperature of the electric heating furnace (6);
and according to the change relation between the real-time pressure value and the time, representing the sealing performance of the battery stack (100) to be tested.
2. The seal testing device according to claim 1, characterized in that it further comprises a pressure reducing valve (8), said pressure reducing valve (8) being arranged on said air intake line (2) and between said air reservoir (1) and said first solenoid valve (3).
3. The seal testing device according to claim 1, further comprising a buffer tank (9), wherein the buffer tank (9) is arranged on the air inlet pipeline (2) and between the mass flow meter (4) and the cell stack (100) to be tested, and the pressure sensor (5) is used for detecting a real-time pressure value in the buffer tank (9).
4. The sealing test device according to claim 1, further comprising an air outlet pipeline (10) and a second electromagnetic valve (11) arranged on the air outlet pipeline (10), wherein the air outlet pipeline (10) is connected to an air outlet (102) of the battery stack (100) to be tested, and the second electromagnetic valve (11) is electrically connected with the controller (7).
5. The seal testing device according to claim 4, further comprising a safety valve (12), wherein the safety valve (12) is disposed on the gas outlet pipe (10) and between the stack (100) to be tested and the second solenoid valve (11).
6. The seal testing device according to any one of claims 1 to 5, further comprising an upper computer (13), wherein the upper computer (13) is electrically connected with the controller (7) and is used for sending a control command to the controller (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220088014.3U CN216410551U (en) | 2022-01-12 | 2022-01-12 | Sealing test device of solid oxide fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220088014.3U CN216410551U (en) | 2022-01-12 | 2022-01-12 | Sealing test device of solid oxide fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216410551U true CN216410551U (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220088014.3U Active CN216410551U (en) | 2022-01-12 | 2022-01-12 | Sealing test device of solid oxide fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216410551U (en) |
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2022
- 2022-01-12 CN CN202220088014.3U patent/CN216410551U/en active Active
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