CN220419520U - High-temperature solid oxide pile testing system - Google Patents
High-temperature solid oxide pile testing system Download PDFInfo
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- CN220419520U CN220419520U CN202321761222.6U CN202321761222U CN220419520U CN 220419520 U CN220419520 U CN 220419520U CN 202321761222 U CN202321761222 U CN 202321761222U CN 220419520 U CN220419520 U CN 220419520U
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- 238000012360 testing method Methods 0.000 title claims abstract description 113
- 239000007787 solid Substances 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000001257 hydrogen Substances 0.000 claims abstract description 27
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 27
- 238000000746 purification Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 43
- 239000002994 raw material Substances 0.000 claims description 11
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 10
- 239000012498 ultrapure water Substances 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000004502 linear sweep voltammetry Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model relates to the technical field of high-temperature solid oxide galvanic pile, and discloses a high-temperature solid oxide galvanic pile testing system, which comprises: the system comprises a rack, wherein the rack is provided with a pile test module, the pile test module comprises an SOFC pile test mode and an SOEC pile test mode, the SOEC pile test mode is used for testing pile voltage and current and pile power output, the SOEC pile test mode is used for testing an electrolysis hydrogen production curve and hydrogen production rate, the pile test module is used for reversibly switching the SOFC pile test mode and the SOEC pile test mode, the rack comprises an outer frame, the outer frame is provided with a plurality of doors, the rack is provided with a first exhaust fan and a second exhaust fan, the rack is provided with a water purification module, and the water purification module is used for purifying raw water. The high-temperature solid oxide cell stack test system can be used for reversibly switching the SOFC cell stack test mode and the SOEC cell stack test mode, is suitable for different test modes, and improves the convenience of operation.
Description
Technical Field
The utility model relates to the technical field of high-temperature solid oxide galvanic piles, in particular to a high-temperature solid oxide galvanic pile testing system.
Background
A Solid Oxide Fuel Cell (SOFC), which belongs to the third generation of fuel cells, is an all-solid-state chemical power generation device that directly converts chemical energy stored in fuel and oxidant into electric energy at medium and high temperatures with high efficiency and environmental friendliness. Solid Oxide Electrolytic Cells (SOECs) are an efficient green hydrogen production technology. Under the condition of external voltage and high temperature, the electrolyzed water generates hydrogen and oxygen to realize the conversion of electric energy and heat energy into chemical energy, and the reaction is the reverse process of the Solid Oxide Fuel Cell (SOFC) technology.
When the voltage and the current of a pile are tested in the SOFC or the hydrogen production rate is tested in the SOEC, the corresponding test system is required to be used for completion, and the test system in the prior art cannot be compatible with two test modes, so that the test system is required to be replaced when the test mode is switched, and the operation is inconvenient.
Disclosure of Invention
The utility model aims to provide a high-temperature solid oxide cell stack testing system for solving the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a high temperature solid oxide cell stack testing system comprising: the system comprises a rack, wherein the rack is provided with a pile test module, the pile test module comprises an SOFC pile test mode and an SOEC pile test mode, the SOEC pile test mode is used for testing pile voltage and current and pile power output, the SOEC pile test mode is used for testing an electrolysis hydrogen production curve and hydrogen production rate, and the SOEC pile test mode are reversibly switched.
Preferably, the rack comprises an outer frame, the outer frame is provided with a plurality of doors, and the rack is provided with a first exhaust fan and a second exhaust fan.
Preferably, the rack is provided with a water purification module, the water purification module is used for purifying raw water, the water purification module comprises an ultrapure water machine, and the ultrapure water machine is connected with a water tank through a pipeline.
Preferably, the bench is provided with a steam supply module, the steam supply module is connected with the water purification module through a pipeline, the steam supply module is used for adjusting the flow, the temperature and the pressure of steam, and the steam supply module comprises a steam generator.
Preferably, the rack is provided with a raw gas supply module, the raw gas supply module is used for providing stable gas flow for the SOFC or SOEC test mode, the raw gas supply module is connected with a mixer through a pipeline, and the mixer is connected with the steam supply module through a pipeline.
Preferably, the stand is provided with a compressed air supply module for maintaining a smooth flow of oxygen.
Preferably, the rack is provided with a high-temperature module, the high-temperature module is used for adjusting the temperature of the electric pile testing module, the high-temperature module comprises a preheating furnace and a high-temperature electric furnace, the preheating furnace is connected with the high-temperature electric furnace through a pipeline, and the electric pile testing module is arranged in the high-temperature electric furnace.
Preferably, a pipeline arranged between the mixer and the water vapor supply module is connected with the preheating furnace, and the preheating furnace is connected with the compressed air supply module through a pipeline.
Preferably, the rack is provided with a tail gas treatment module, the tail gas treatment module is connected with the high-temperature module through a pipeline, and the tail gas treatment module is used for treating tail gas.
Preferably, the exhaust gas treatment module comprises a cooler connected to the gas-liquid separator by a pipe.
The high-temperature solid oxide cell stack testing system has the following beneficial effects:
according to the high-temperature solid oxide cell stack testing system, the cell stack testing module is adjusted to reversibly switch between the SOFC cell stack testing mode and the SOEC cell stack testing mode, so that the testing system can adapt to different testing modes, and the operation convenience is improved.
Drawings
FIG. 1 is a perspective view of the structure of the present utility model;
FIG. 2 is a front view showing the internal structure of the outer frame of FIG. 1;
FIG. 3 is a rear view showing the internal structure of the outer frame of FIG. 2;
fig. 4 is a flowchart.
In the figure: 1. a stand; 101. an outer frame; 102. a door; 103. a first exhaust fan; 104. a second exhaust fan; 2. a water purification module; 201. an ultrapure water machine; 202. a water tank; 3. a water vapor supply module; 301. a steam generator; 4. a feed gas supply module; 5. a high temperature module; 501. a preheating furnace; 502. a high temperature electric furnace; 6. a galvanic pile test module; 7. a tail gas treatment module; 701. a cooler; 702. a gas-liquid separator; 8. a mixer; 9. a control module; 10. a compressed air supply module; 11. a pressure gauge; 12. a pressure reducing valve; 13. a safety valve; 14. a one-way valve; 15. a back pressure valve; 16. a temperature sensor; 17. a pressure sensor; 18. a flow controller; 19. an electromagnetic valve; 20. a manual valve; 21. a flame arrester; 22. and (3) a filter.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-4, the present utility model provides an embodiment of a high temperature solid oxide stack testing system, comprising: the rack 1, rack 1 includes frame 101, and frame 101 sets up a plurality of door 102, and rack 1 sets up first air discharge fan 103 and second air discharge fan 104.
The rack 1 sets up water purification module 2, and water purification module 2 is used for purifying raw materials water, and water purification module 2 includes ultrapure water machine 201, and ultrapure water machine 201 passes through the external water source of pipe connection, and the waste water that produces after the ultrapure water machine 201 purification raw materials water discharges to the outside, and ultrapure water machine 201 has water tank 202 through pipe connection, still can normally supply water when setting up water tank 202 and can satisfy ultrapure water machine 201 emergence emergency or change water treatment consumptive material.
The rack 1 is provided with a steam supply module 3, the steam supply module 3 is connected with the water purification module 2 through a pipeline, the steam supply module 3 is used for adjusting the flow, the temperature and the pressure of steam, the steam supply module 3 comprises a steam generator 301, and the steam generator 301 is provided with a temperature sensor 16.
The bench 1 is provided with a raw material gas supply module 4, the raw material gas supply module 4 is used for providing stable gas flow for SOFC or SOEC test modes, the raw material gas supply module 4 is connected with a mixer 8 through a pipeline, and the output end of the mixer 8 is connected with the output end of a steam generator 301 through a pipeline. As shown in fig. 4, the raw material gas supply module 4 is provided with five gas path pipelines from top to bottom, which are an air gas path, a low-flow mixed gas path of hydrogen and nitrogen, a pure hydrogen gas path, a pure nitrogen gas path and a water vapor path in sequence, wherein the low-flow mixed gas path of hydrogen and nitrogen, the pure hydrogen gas path and the pure nitrogen gas path are identical in structural parts on the pipelines, and a pressure sensor 17, a pressure reducing valve 12, a pressure gauge 11, a pressure sensor 17, an electromagnetic valve 19, a filter 22, a flow controller 18 and a one-way valve 14 are sequentially arranged on the pipelines. In addition, the water vapor gas is formed by combining the water purification module 2 with the water vapor supply module 3.
The pure hydrogen gas path is used as a protective gas during reaction in an SOEC mode, and is used as a raw material gas during reaction in an SOFC mode; the pure nitrogen gas circuit plays a role in purging when the galvanic pile test module 6 is started and ended to run, so that the test system is ensured to maintain inert atmosphere in a low-temperature heating stage, and the degradation of the pipeline and galvanic pile materials is prevented; under the condition that the test bench is not used, the mixed gas circuit of low-flow hydrogen and nitrogen serves as a protective gas, and in the power-off state, the test system is ensured to keep a low-flow-rate hydrogen reduction state, and unnecessary oxidation of water vapor, the hydrogen gas circuit and the inside of a pile under the high-temperature and high-humidity environment is prevented. The five gas circuit pipelines ensure the stability of the gas flow, temperature and pressure in the test system under the multiple control and monitoring of the pressure sensor 17, the pressure reducing valve 12, the pressure gauge 11, the pressure sensor 17 and the like.
The bench 1 is provided with a compressed air supply module 10, an air path in the raw material gas supply module 4 is connected with the compressed air supply module 10, the compressed air supply module 10 is used for maintaining stable flow of oxygen, and a pressure sensor 17, two filters 22, a pressure reducing valve 12, a pressure gauge 11, a safety valve 13, a pressure sensor 17, an electromagnetic valve 19, the filters 22, a flow controller 18, a one-way valve 14 and a temperature sensor 16 are sequentially arranged on a pipeline connected with the compressed air supply module 10.
The compressed air supply module 10 can ensure that the oxygen electrode chamber of the galvanic pile maintains stable flow of oxygen, a miniature reciprocating piston type air compressor is adopted, the reciprocating motion of a piston is adopted, air enters the air compressor through the filter 22, then the air is compressed, compressed air enters the air storage tank through the air outlet opening the one-way valve 14 through the metal hose, the air path is subjected to three filtering devices for removing oil, water and particles, clean compressed air can be obtained, disturbance in the testing process caused by impurities in the air is avoided, and the air pressure of outlet air is accurately controlled through the pressure reducing valve 12 and the pressure gauge 11.
The rack 1 is provided with a high-temperature module 5 and a galvanic pile test module 6, the high-temperature module 5 is used for adjusting the temperature of the galvanic pile test module 6, the high-temperature module 5 comprises a preheating furnace 501 and a high-temperature electric furnace 502, the preheating furnace 501 is arranged at the bottom of the high-temperature electric furnace 502, the preheating furnace 501 is connected with the high-temperature electric furnace 502 through a pipeline, a temperature sensor 16 and a pressure sensor 17 are arranged on the pipeline connected between the preheating furnace 501 and the high-temperature electric furnace 502, and three temperature sensors 16 are arranged on the high-temperature electric furnace 502 to respectively measure the temperature of hydrogen, oxygen and water vapor.
The electric pile test module 6 is arranged on the high-temperature electric furnace 502, the preheating furnace 501 enables all gases to be fully preheated before entering the electric pile test module 6, the high-temperature electric furnace 502 provides a stable high-temperature environment for SOFC and SOEC tests, a pipeline arranged between the mixer 8 and the water vapor supply module 3 is connected with the preheating furnace 501, a pressure sensor 17 and a temperature sensor 16 are arranged on a pipeline connected between the preheating furnace 501 and the vapor generator 301, a temperature sensor 16 is arranged on a pipeline connected between the preheating furnace 501 and the mixer 8, and the preheating furnace 501 is connected with the compressed air supply module 10 through a pipeline.
Specifically, the electric pile test module 6 includes an SOFC electric pile test mode and an SOEC electric pile test mode, where the SOFC electric pile test mode is used to test electric pile voltage and current and electric pile power output, the SOEC electric pile test mode is used to test an electrolysis hydrogen production curve and hydrogen production rate, and the electric pile test module 6 reversibly switches the SOFC electric pile test mode and the SOEC electric pile test mode, so that the test system can adapt to different test modes, and operation convenience is improved.
Furthermore, in the SOFC pile test mode, the pure hydrogen gas path is used for introducing hydrogen into the mixer 8, and the hydrogen enters the pile test module 6 for generating electricity through the preheating furnace 501, and the pile voltage and current can be tested through the external direct current electronic load device and the voltage inspection instrument, so that the SOFC pile test device has the functions of constant current discharge, constant voltage discharge, linear sweep voltammetry and the like; in the SOEC pile test mode, alternating current is converted into direct current through a direct current power supply, and electrolytic hydrogen production can be performed in a constant current or constant voltage mode, so that the method has the functions of testing an electrolytic hydrogen production curve and hydrogen production rate. In addition, the electromagnetic valve 19 and the manual valve 20 are adjusted to close the inlet and outlet air paths of the high-temperature module 5, so that the air tightness of the electric pile in a high-temperature environment can be tested.
The rack 1 is provided with a tail gas treatment module 7, the tail gas treatment module 7 is connected with the high-temperature module 5 through a pipeline, the tail gas treatment module 7 is used for treating tail gas, the tail gas treatment module 7 comprises a cooler 701, a pressure sensor 17 and a temperature sensor 16 are arranged on a pipeline connected between the cooler 701 and the high-temperature electric furnace 502, and an electromagnetic valve 19 is arranged on a water inlet pipeline of the cooler 701. The tail gas can be directly discharged into the atmosphere, back pressure discharge can be realized by opening the electromagnetic valve 19, the internal pressure of the pipeline is improved, and the reaction efficiency of the electric pile under various pressure conditions can be tested.
The cooler 701 is connected with two exhaust pipelines, the upper pipeline is used for discharging oxygen generated by the electric pile testing module 6 in the SOEC electric pile testing mode, the lower pipeline is used for discharging hydrogen generated by the electric pile testing module 6 in the SOEC electric pile testing mode, the exhaust pipelines are provided with a temperature sensor 16, an electromagnetic valve 19, a back pressure valve 15 and a manual valve 20, the electromagnetic valve 19 and the back pressure valve 15 are connected in parallel with a safety valve 13, and the safety valve 13 is normally open; the hydrogen discharge pipeline is provided with a temperature sensor 16, a gas-liquid separator 702, an electromagnetic valve 19, a back pressure valve 15, a manual valve 20 and a flame arrester 21, wherein the gas-liquid separator 702 is provided with an automatic water discharge valve.
The rack 1 is provided with the control module 9, the control module 9 adopts a distributed system structure, the SOFC pile test mode and the SOEC pile test mode can be independently controlled, a protection system is arranged in the control module 9, indexes such as electricity consumption, temperature, pressure, leakage quantity and the like are ensured to be lower than a preset value, protection measures are set for various factors influencing the safe operation of equipment, and the equipment and personnel safety in the operation process are ensured.
Working principle: the electric pile testing module 6 is regulated to switch between an SOFC electric pile testing mode and an SOEC electric pile testing mode, under the SOFC electric pile testing mode, a pure hydrogen gas circuit is used for introducing hydrogen into the mixer 8, the pure hydrogen gas circuit enters the electric pile testing module 6 through the preheating furnace 501 to generate power, and the electric pile voltage and current can be tested through an external direct current electronic load device and a voltage patrol instrument, so that the electric pile testing device has the functions of constant current discharge, constant voltage discharge, linear sweep voltammetry and the like; in the SOEC pile test mode, alternating current is converted into direct current through a direct current power supply, and electrolytic hydrogen production can be performed in a constant current or constant voltage mode, so that the method has the functions of testing an electrolytic hydrogen production curve and hydrogen production rate.
In view of the foregoing, it will be appreciated that while embodiments of the utility model have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations may be made hereto without departing from the principles and spirit of the utility model, the scope of which is defined by the appended claims and their equivalents.
Claims (10)
1. A high temperature solid oxide stack testing system, characterized by: comprising the following steps: the system comprises a bench (1), wherein the bench (1) is provided with a pile test module (6), the pile test module (6) comprises an SOFC pile test mode and an SOEC pile test mode, the SOEC pile test mode is used for testing pile voltage and current and pile power output, the SOEC pile test mode is used for testing an electrolysis hydrogen production curve and hydrogen production rate, and the SOEC pile test mode are reversibly switched by the pile test module (6).
2. A high temperature solid oxide stack testing system according to claim 1, wherein: the rack (1) comprises an outer frame (101), the outer frame (101) is provided with a plurality of doors (102), and the rack (1) is provided with a first exhaust fan (103) and a second exhaust fan (104).
3. A high temperature solid oxide stack testing system according to claim 2, wherein: the rack (1) is provided with a water purification module (2), the water purification module (2) is used for purifying raw water, the water purification module (2) comprises an ultrapure water machine (201), and the ultrapure water machine (201) is connected with a water tank (202) through a pipeline.
4. A high temperature solid oxide stack testing system according to claim 3, wherein: the rack (1) is provided with a water vapor supply module (3), the water vapor supply module (3) is connected with the water purification module (2) through a pipeline, the water vapor supply module (3) is used for adjusting the flow, the temperature and the pressure of water vapor, and the water vapor supply module (3) comprises a vapor generator (301).
5. The high temperature solid oxide stack testing system of claim 4, wherein: the rack (1) is provided with a raw material gas supply module (4), the raw material gas supply module (4) is used for providing stable air flow for SOFC or SOEC test modes, the raw material gas supply module (4) is connected with a mixer (8) through a pipeline, and the output end of the mixer (8) is connected with the output end of the steam generator (301) through a pipeline.
6. The high temperature solid oxide stack testing system of claim 5, wherein: the gantry (1) is provided with a compressed air supply module (10), said compressed air supply module (10) being adapted to maintain a smooth flow of oxygen.
7. The high temperature solid oxide stack testing system of claim 6, wherein: the high-temperature module (5) is arranged on the rack (1), the high-temperature module (5) is used for adjusting the temperature of the electric pile testing module (6), the high-temperature module (5) comprises a preheating furnace (501) and a high-temperature electric furnace (502), the preheating furnace (501) is connected with the high-temperature electric furnace (502) through a pipeline, and the electric pile testing module (6) is arranged in the high-temperature electric furnace (502).
8. The high temperature solid oxide stack testing system of claim 7, wherein: the preheating furnace (501) is connected with the pipeline arranged between the mixer (8) and the water vapor supply module (3), and the preheating furnace (501) is connected with the compressed air supply module (10) through the pipeline.
9. The high temperature solid oxide stack testing system of claim 7, wherein: the rack (1) is provided with a tail gas treatment module (7), the tail gas treatment module (7) is connected with the high-temperature module (5) through a pipeline, and the tail gas treatment module (7) is used for treating tail gas.
10. A high temperature solid oxide stack testing system according to claim 9, wherein: the tail gas treatment module (7) comprises a cooler (701), and the cooler (701) is connected with a gas-liquid separator (702) through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321761222.6U CN220419520U (en) | 2023-07-06 | 2023-07-06 | High-temperature solid oxide pile testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321761222.6U CN220419520U (en) | 2023-07-06 | 2023-07-06 | High-temperature solid oxide pile testing system |
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| Publication Number | Publication Date |
|---|---|
| CN220419520U true CN220419520U (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321761222.6U Active CN220419520U (en) | 2023-07-06 | 2023-07-06 | High-temperature solid oxide pile testing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220419520U (en) |
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2023
- 2023-07-06 CN CN202321761222.6U patent/CN220419520U/en active Active
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