Solid oxide electrolytic cell testing device heated by light

Abstract

The utility model relates to a light-heated solid oxide electrolytic cell testing device which comprises an outer flow cover, a glass upper flange is arranged at one end of the outer flow cover, a light-transmitting plate is arranged in the glass upper flange, a flange assembly is arranged at the other end of the outer flow cover, and an inner pipe connected with the flange assembly is arranged in an inner cavity of the outer flow cover. A pressing ring is arranged between the inner pipe and the light-transmitting plate, an electrolytic tank is installed on the top of the inner pipe, and electrolytic tank sealing rings are installed on the upper side and the lower side of the electrolytic tank respectively. The side wall of the outer flow cover is connected with an air inlet pipe and an air outlet pipe which are communicated with the inner cavity of the outer flow cover, the side wall of one end, close to the electrolytic tank, of the inner pipe is connected with a steam inlet pipe communicated with the inner cavity of the inner pipe, and the flange assembly is connected with a gas exhaust pipe communicated with the inner cavity of the inner pipe. The solid oxide electrolytic tank can realize full utilization of light and heat by the solid oxide electrolytic tank and improve gas distribution and gas utilization effects while meeting sealed collection of gas on two sides of the electrolytic tank.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature electrolytic hydrogen production technology, and in particular to a testing device for a solid oxide electrolytic cell using light heating. Background Technology

[0002] Hydrogen is an ideal secondary energy source, and efficient hydrogen production is a current research hotspot. Solid oxide electrolyzers can directly electrolyze water to produce hydrogen under medium-high temperature conditions of 600℃~800℃. In the entire electrolysis process, compared with the easily obtainable and conveniently supplied electrical energy, how to obtain the large amount of heat energy required for the reaction has always been an urgent problem to be solved in hydrogen production using solid oxide technology. Therefore, devices that can couple solar thermal energy with solid oxides to produce hydrogen are of great significance.

[0003] During electrolysis, in a solid oxide electrolytic cell (taking a typical flat-plate oxygen ion conduction electrolyte battery as an example), the hydrogen electrode decomposes water vapor to produce hydrogen, while the oxygen electrode releases pure oxygen. The electrolytic cell operates in a high-temperature, high-humidity, and strongly reducing / oxidizing environment, requiring high sealing on both sides of the high-temperature zone. Furthermore, to meet experimental needs for gas composition and yield analysis, and to guide the large-scale collection of hydrogen and oxygen in industrial applications, the device must be designed with a sealed gas collection system that facilitates connection to external pipelines. Additionally, to improve the efficiency of solar thermal energy, the designed device needs a light path that allows direct illumination of the electrolytic cell. These conditions place high demands on the selection of materials and the structural design of the device.

[0004] In existing technologies, such as Chinese Patent CN101216445B, a fixed test bracket for a high-temperature solid oxide monomer electrolytic cell is disclosed. This bracket uses a high-temperature ceramic tube as a sealed chamber, a long tube as an inlet pipe, and a short tube as an outlet pipe. A square stainless steel nut and spring are used to press a stainless steel connector, ceramic tube, and glass sealing ring to form a sealed chamber on one side of the electrolytic cell. A metal wire threaded through the ceramic tube is arranged on the outside as an electrical signal lead. The drawback of this device is that it only achieves gas sealing on one side of the electrolytic cell, which is insufficient to meet the gas collection needs of experimental testing or industrial applications. Furthermore, the lack of gas supply and purging devices on the open side of the electrolytic cell means that a lack of reactants or accumulation of products will negatively impact the performance of the electrolytic cell. Patent CN 101311318B, a sealing device and method for a high-temperature electrolytic hydrogen production solid oxide electrolytic cell, uses a similar structure and suffers from the same technical defects. In addition, this device uses a high-temperature alloy ferrule to apply pressure to the electrolytic cell and sealing ring; due to the differences in the thermal expansion coefficients of various materials, the applied pressure is difficult to control.

[0005] Existing technologies, such as the high-temperature solid oxide electrolytic cell device coupled with solar photovoltaic and photothermal coupling (CN110760873B) and the high-temperature solid oxide electrolysis water-to-fuel gas device coupled with solar photovoltaic and photothermal coupling (CN115369424A), connect photovoltaic modules to a tubular solid oxide electrolytic cell with a selective absorption coating. The electrolysis reaction temperature is maintained by absorbing heat through light irradiation of the inner wall of the electrolytic cell. However, these technologies are limited to tubular electrolytic cells, resulting in low electrolysis power and reactant conversion rates due to the limitations of the cell structure. This makes them unsuitable for large-scale applications. Furthermore, the uneven distribution of the light path used for heating along the tube leads to significant differences between different areas of the cell, making it difficult to assess the accuracy of the experimental setup and severely impacting the overall performance of the electrolytic cell. For example, the patent with publication number CN101345316B discloses a button solid oxide fuel cell reactor. The electrolytic cell and the sealing components are fixed with nickel-cadmium wire. Both ends of the electrolytic cell have air inlet and outlet ports. However, the electrolytic cell is completely sealed in a ceramic tube and lacks the conditions for solar thermal coupling.

[0006] In summary, existing cases of coupling photothermal and photoelectric technologies with solid oxide technology typically employ tubular solid oxide electrolytic cells with low electrolysis power and efficiency in order to simultaneously meet the requirements of illumination and sealing. Due to the inherent limitations of light irradiation along the tube path, the electrolysis efficiency will be further reduced.

[0007] Current solid oxide electrolysis cell testing devices typically only meet the requirement of sealing one side of the electrolysis cell, which cannot satisfy the need for product collection and will negatively impact the experimental analysis process. Furthermore, in large-scale applications, the inability to collect large amounts of product will lead to resource waste and create risks. For example, in oxygen ion-conducting solid oxide electrolysis cells, hydrogen is generated on one side and oxygen on the other during hydrogen production. If not collected, the generated hydrogen is flammable and explosive at high temperatures, and the generated oxygen will increase the risk of spontaneous combustion of materials.

[0008] Existing solutions typically lack gas supply and exhaust pipelines or only arrange them on one side. Difficulty in supplying or venting gas to the surface of the electrolytic cell during the reaction process increases concentration polarization and leads to a decline in the performance of the electrolytic cell. Utility Model Content

[0009] To address the shortcomings of existing technologies, the purpose of this invention is to provide a photothermal solid oxide electrolytic cell testing device. This device enables the sealed collection of gas from both sides of the electrolytic cell while simultaneously maximizing the utilization of photothermal energy, improving gas distribution and utilization efficiency, and maximizing the accuracy and functionality of the device's testing. The device features a compact design, simple component manufacturing processes, and is easily scaled up for application, possessing significant commercial value.

[0010] The above-mentioned utility model objective is achieved through the following technical solution:

[0011] A test device for a solid oxide electrolytic cell using light heating includes an outer flow hood, a glass flange installed at one end of the outer flow hood, a light-transmitting plate installed inside the glass flange, a flange assembly installed at the other end, an inner tube connected to the flange assembly disposed in the internal cavity of the outer flow hood, a pressure ring disposed between the inner tube and the light-transmitting plate, an electrolytic cell installed at the top of the inner tube, and electrolytic cell sealing rings installed on the upper and lower sides of the electrolytic cell respectively.

[0012] An air inlet pipe and an air outlet pipe communicating with its internal cavity are connected to the side wall of the outer shroud. A steam inlet pipe communicating with the internal cavity of the inner tube is connected to the side wall of the inner tube near the electrolytic cell. A gas outlet pipe communicating with the internal cavity of the inner tube is connected to the flange assembly.

[0013] As a further technical solution of this utility model: a light-transmitting plate sealing ring is provided on the upper and lower sides of the light-transmitting plate respectively.

[0014] As a further technical solution of this utility model: four elastic connectors are evenly installed on the outer wall of the inner tube, and one end of the four elastic connectors is detachably and fixedly connected to the pressure ring.

[0015] As a further technical solution of this utility model: the elastic connector includes a pull rod, a spring and a spring lug. The spring lug is fixed on the outer wall of the inner tube. One end of the spring is connected to the spring lug and the other end is connected to one end of the pull rod. The end of the pull rod away from the spring is fixed on the pressure ring.

[0016] As a further technical solution of this utility model: the side of the pressure ring is provided with an air inlet hole that communicates with the air inlet pipe, and the inner diameter of the air inlet hole is greater than or equal to the inner diameter of the air inlet pipe.

[0017] As a further technical solution of this utility model: the upper surface of the pressure ring is funnel-shaped, and its angle satisfies that the conical light beam from above can completely pass through the hole in the center of the pressure ring, ensuring that the light beam is not blocked by any position of the pressure ring.

[0018] As a further technical solution of this utility model: a convex tube is fixedly connected to the top of the inner tube, a through hole is opened on the top surface of the convex tube, the electrolytic cell is located above the through hole, and the reaction chamber inside the convex tube is connected to the internal cavity of the inner tube.

[0019] One end of the steam inlet pipe passes through the bottom of the inner pipe and exits through the flange assembly, while the other end is connected to the side wall of the convex pipe and communicates with the reaction chamber. The gas entering through the steam inlet pipe is fully distributed within the space of the reaction chamber.

[0020] As a further technical solution of this utility model: the flange assembly includes an upper flange, a middle flange and a lower flange that are sealed and connected from top to bottom. The bottom of the outer flow shroud is connected to the upper flange. The bottom of the inner tube is integrally formed and fixedly connected to the upper flange. The top surface of the middle flange is integrally formed and fixedly connected with a boss. The boss is embedded and fixed in the inner cavity of the inner tube.

[0021] As a further technical solution of this utility model: the gas discharge pipe is fixed on the boss, and one end of the pipe passes through the lower flange and communicates with the outside, while the other end communicates with the internal cavity of the inner pipe.

[0022] Three outer pipes are installed on the upper flange. One end of each outer pipe extends into the internal cavity of the outer flow shroud, and the other end passes through the middle flange and the lower flange to communicate with the outside.

[0023] As a further technical solution of this utility model: three conduits are also installed on the boss. One end of the three conduits passes through the lower flange and communicates with the outside. The other end is close to the bottom of the electrolytic cell. Two of the conduits are used to insert conductive wires to connect with the electrolytic cell, and the other conduit is used to insert a temperature sensor. The temperature sensor is close to the lower surface of the electrolytic cell and is used to measure the surface temperature of the electrolytic cell.

[0024] In summary, this utility model has at least one of the following beneficial technical effects:

[0025] This utility model discloses a testing device for a solid oxide electrolytic cell utilizing photothermal heating. Through a specially designed alloy component structure, it achieves both sealed gas collection on both sides of the electrolytic cell, fully utilizing the photothermal energy of the solid oxide electrolytic cell, improving gas distribution and utilization efficiency, and maximizing the accuracy and functionality of the device's testing. The device has a compact design, simple component manufacturing process, and is easy to scale up for application, possessing strong commercial value. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0027] Figure 2 This is a cross-sectional view of the present invention.

[0028] Figure 3 for Figure 2 A magnified view of part A in the diagram.

[0029] Figure 4 This is a schematic diagram of the internal structure of this utility model (the outer flow cover is omitted).

[0030] Figure 5 This is a top view of the present invention from the perspective of the lower flange.

[0031] Figure 6 This is a schematic diagram illustrating the structure of the pressure ring of this utility model.

[0032] Reference numerals: 1. Outer shroud; 11. Air inlet pipe; 12. Air outlet pipe; 13. Steam inlet pipe; 14. Gas exhaust pipe; 15. Air sealing ring; 16. Air sealing groove; 17. Steam sealing ring; 18. Conduit sealing ring; 19. Outer pipe sealing ring; 2. Glass upper flange; 3. Light-transmitting plate; 31. Light-transmitting plate sealing ring; 4. Flange assembly; 41. Upper flange; 42. Middle flange; 43. Lower flange; 44. Boss; 45. Conduit; 46. Outer pipe; 5. Inner pipe; 51. Protruding pipe; 6. Pressure ring; 61. Air inlet; 62. Bolt hole; 63. Device fixing hole; 7. Electrolytic cell; 8. Electrolytic cell sealing ring; 9. Elastic connector; 91. Tie rod; 92. Spring; 93. Spring lug. Detailed Implementation

[0033] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0034] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Example

[0036] Reference Figure 1 This utility model discloses a photothermal solid oxide electrolytic cell testing device, comprising an outer flow hood 1, a glass upper flange 2 installed at one end of the outer flow hood 1, a light-transmitting plate 3 installed inside the glass upper flange 2, and a flange assembly 4 installed at the other end. An inner tube 5 connected to the flange assembly 4 is disposed within the internal cavity of the outer flow hood 1, and a pressure ring 6 is disposed between the inner tube 5 and the light-transmitting plate 3. (Refer to...) Figure 3 An electrolytic cell 7 is installed at the top of the inner tube 5, and electrolytic cell sealing rings 8 are installed on the upper and lower sides of the electrolytic cell 7 respectively; an air inlet pipe 11 and an air outlet pipe 12 connected to the side wall of the outer flow shroud 1 are connected to the inner cavity of the outer flow shroud 1; a steam inlet pipe 13 connected to the inner cavity of the inner tube 5 is connected to the side wall of the inner tube 5 near the electrolytic cell 7; and a gas discharge pipe 14 connected to the inner cavity of the inner tube 5 is connected to the flange assembly 4.

[0037] Reference Figure 2 The light-transmitting plate 3 has light-transmitting sealing rings 31 on its upper and lower sides, allowing light to directly irradiate and heat the internal electrolytic cell 7, thus improving photothermal efficiency. A circular shape is preferable for the light-transmitting plate 3, facilitating its integration with the sealing rings 31 and the upper glass flange 2 to form an airtight structure. The material is quartz glass, with a temperature resistance >800℃ and high light transmittance. The upper glass flange 2, the light-transmitting plate 3, the two sealing rings 31, and the outer flow hood 1 are sealed together using a set of bolts.

[0038] Reference Figure 2 The outer shroud 1 has two openings and is connected to two pipes, namely an air inlet pipe 11 and an air outlet pipe 12. The air inlet pipe 11 is bent at the opening and extends upward along the center line of the outer shroud 1, with a vertical length of ≥100mm, and can be used to wrap insulation material.

[0039] Reference Figure 4Four elastic connectors 9 are evenly installed on the outer wall of the inner tube 5. One end of each elastic connector 9 is detachably and fixedly connected to the pressure ring 6. Each elastic connector 9 includes a pull rod 91, a spring 92, and a spring lug 93. The spring lug 93 is fixed to the outer wall of the inner tube 5. One end of the spring 92 is connected to the spring lug 93, and the other end is connected to one end of the pull rod 91. The end of the pull rod 91 away from the spring 92 is fixed to the pressure ring 6. The pressure ring 6 has openings around its perimeter for fixing the pull rod 91.

[0040] Furthermore, one side of the pull rod 91 is designed as a cylinder, and the other side as a cuboid. The cylinder is divided into two parts, a thicker one and a thinner one. The diameter of the thicker part is larger than the holes around the pressure ring 6, and the diameter of the thinner part is smaller than the holes around the pressure ring 6, so that the pressure ring 6 can be reliably connected to the pull rod 91 when subjected to downward pulling force. The spring lug 93 has an opening for fixing the spring 92, so that the spring 92 can be reliably connected to the spring lug 93 when subjected to upward pulling force. Several holes are equally spaced along the length of the pull rod 91 to adjust the extension length of the spring 92, thereby controlling the pulling force of the spring 92. The spring 92 is located in the low-temperature zone of the device and can provide a constant pulling force.

[0041] Reference Figure 6 The pressure ring 6 has an air inlet 61 on its side, which communicates with the air inlet pipe 11. The inner diameter of the air inlet 61 is greater than or equal to the inner diameter of the air inlet pipe 11. The holes of the air inlet pipe 11 and the air inlet 61 are close together, ensuring that gas flows along the airflow direction from the air inlet pipe 11 into the air inlet 6, allowing a small amount of gas to leak at the pipe joint gap. The air inlet pipe 11 extends into the inner wall of the outer flow cover 1, and the center height of the pipe is the same as the center height of the opening on the side of the pressure ring 6, forming an air passage. The gas from the air inlet pipe 11 flows through the air inlet 61 on the side of the pressure ring 6 and is evenly distributed in the central area of ​​the pressure ring 6. The upper surface of the pressure ring 6 is funnel-shaped, and its angle is such that a conical beam of light from above can completely pass through the hole in the center of the pressure ring 6, ensuring that the beam of light is not blocked by any position of the pressure ring 6.

[0042] A protruding tube 51 is fixedly connected to the top of the inner tube 5. A through hole is formed on the top surface of the protruding tube 51, the size of which is the same as the effective reaction area of ​​the electrolytic cell 7. The electrolytic cell 7 is located above the through hole, and the reaction chamber inside the protruding tube 51 communicates with the internal cavity of the inner tube 5. This through hole has the same effective working area as the electrolytic cell 7, and the outer diameter of the protruding tube 51 should be greater than or equal to the outer diameter of the electrolytic cell 7. One end of the steam inlet pipe 13 passes through the bottom of the inner tube 5 and exits through the flange assembly 4, further extending through the side wall of the upper flange 41. The other end is connected to the side wall of the protruding tube 51 and communicates with the reaction chamber. The gas entering through the steam inlet pipe 13 is fully distributed within the space of the reaction chamber. The purpose of this arrangement is to emphasize uniform distribution within a small area of ​​the protruding tube 51, because only this area is close to the electrolytic cell 7, and therefore the gas distribution within it directly affects the fuel supply to the electrolytic cell 7.

[0043] Electrolytic cell 7 is positioned between two electrolytic cell sealing rings 8, on the upper surface of the convex tube 51, with a pressure ring 6 installed above it. The pressure ring 6, pull rod 91, spring 92, and spring lug 93, when tightened, provide a stable compressive force to the electrolytic cell 7 and the electrolytic cell sealing rings 8, forming a seal.

[0044] The flange assembly 4 includes an upper flange 41, a middle flange 42, and a lower flange 43, which are sequentially and sealed from top to bottom. The bottom of the outer flow shroud 1 is connected to the upper flange 41, and the bottom of the inner tube 5 is integrally formed and fixedly connected to the upper flange 41. The top surface of the middle flange 42 is integrally formed and fixedly connected to a boss 44, which is embedded and fixed in the inner cavity of the inner tube 5. The gas discharge pipe 14 is fixed on the boss 44, with one end extending through the lower flange 43 to communicate with the outside, and the other end communicating with the inner cavity of the inner tube 5. Three outer pipes 46 are installed on the upper flange 41, with one end of each outer pipe 46 extending into the inner cavity of the outer flow shroud 1, and the other end extending through the middle flange 42 and the lower flange 43 to communicate with the outside.

[0045] Reference Figure 2 and Figure 5 Three conduits 45 are also installed on the boss 44. One end of the three conduits 45 extends through the lower flange 43 to communicate with the outside, and the other end is close to the bottom of the electrolytic cell 7. Two of the conduits 45 are used to insert conductive wires to connect with the electrolytic cell 7, and the other conduit 45 is used to insert a temperature sensor. The temperature sensor is close to the lower surface of the electrolytic cell 7 and is used to measure the surface temperature of the electrolytic cell 7.

[0046] The upper flange 41, middle flange 42, and lower flange 43 have multiple through holes and bolt holes 62, with each hole corresponding to the next. The three conduits 45, the gas exhaust pipe 14, and the three outer pipes 46 are all hollow ceramic tubes, resistant to high temperatures and providing insulation. The outer flow shroud 1, upper flange 41, middle flange 42, and lower flange 43 are integrally connected by another set of bolts, which are installed at eight evenly distributed circumferential bolt holes 62. The lower flange 43 has four device fixing holes 63.

[0047] An air sealing ring 15 is installed between the outer flow shroud 1 and the upper flange 41, and the air sealing ring 15 is embedded in the air sealing groove 16 on the upper flange 41. A steam sealing ring 17 is installed between the upper flange 41 and the middle flange 42, and the steam sealing ring 17 is sleeved at the connection between the boss 44 and the middle flange 42. In addition, each of the three conduits 45 and the gas discharge pipe 14 is equipped with a conduit 45 sealing ring 18, and the three outer pipes 46 are also equipped with an outer pipe 46 sealing ring 19.

[0048] Three conduits 45, along with the gas exhaust pipe 14 and three outer pipes 46, are inserted into the holes of the flange assembly 4. An air sealing ring 15 is located between the outer flow shroud 1 and the upper flange 41. The sealing ring 19 of the outer pipe 46 is located between the upper flange 41 and the middle flange 42. The sealing ring 18 of the conduit 45 is located between the middle flange 42 and the lower flange 43. The bottom of the three conduits 45 extends beyond the lower flange 43, and the top is close to the top of the electrolytic cell 7. Two of the conduits 45 are threaded with platinum or silver wire, and the other conduit 45 is threaded with a temperature sensor located near the lower surface of the electrolytic cell 7 to accurately measure its surface temperature. The gas exhaust pipe 14 is relatively short, extending beyond the lower flange 43 at the bottom and located between the upper flange 41 and the middle flange 42 at the top. The gas exhaust pipe 14 is located in the low-temperature region of the device, and its low-lying top facilitates smooth discharge of both the gas and liquid phases.

[0049] Two of the two conduits 45 have platinum or silver wires extending from the ceramic tubes at both the top and bottom, with the upper side connected to the electrolytic cell 7. The upper side of the other conduit 45 is close to the electrolytic cell 7. Three outer tubes 46 extend from the lower flange 43 at the bottom and are close to the electrolytic cell 7 at the top. Two of the outer tubes 46 are threaded with platinum or silver wires, and the other outer tube 46 is threaded with a temperature sensor, which is close to the upper surface of the electrolytic cell 7 to accurately measure the surface temperature of the electrolytic cell 7. Wires are led out from the surface of the electrolytic cell 7 through the two outer tubes 46 and the two conduits 45 to achieve four-electrode electrochemical testing with high accuracy. The lower parts of the three conduits 45 (two leads and one thermocouple tube) and the three outer tubes 46 (two leads and one thermocouple tube) are sealed. The lower parts of the outer tubes 46 and the two conduits 45 are sealed with room temperature adhesive to prevent steam and air leakage along the tube side.

[0050] After installation, the electrolytic cell 7 forms isolated chambers above and below. The outer chamber exchanges gas with the outside only through the air inlet pipe 11 and the air outlet pipe 12, while the inner chamber exchanges gas with the outside only through the steam inlet pipe 13 and the gas outlet pipe 14. A beam of light from above the device passes through the light-transmitting plate 3 and the pressure ring 6 to directly irradiate the electrolytic cell 7. The area above the electrolytic cell 7 is a high-temperature zone, and the area below is a low-temperature zone. Air enters through the air inlet pipe 11, passes through a vertical preheating pipe, and enters the outer flow shroud 1. It is then fully distributed in the chamber above the electrolytic cell 7 through the air inlet hole 61 on the side of the pressure ring 6. The reacted gas is discharged from the air outlet pipe 12 under the pressure difference, fulfilling the gas collection requirement. Steam enters through the steam inlet pipe 13, passes through a vertical preheating pipe, and enters the inner pipe 5. It is fully distributed in the reaction chamber below the electrolytic cell 7. The reacted gas is discharged from the gas outlet pipe 14 under the pressure difference, fulfilling the gas collection requirement. Preferably, the outer wall of the device is wrapped with heat-insulating material to reduce heat loss.

[0051] The implementation principle of this utility model is as follows: This utility model discloses a testing device for a solid oxide electrolytic cell utilizing light heating. Through a specially designed alloy component structure, it satisfies the requirement of sealed gas collection on both sides of the electrolytic cell 7, while simultaneously achieving full utilization of light and heat by the solid oxide electrolytic cell 7, improving gas distribution and utilization efficiency, and maximizing the accuracy and functionality of the device's testing. The device has a compact design, simple component processing, and is easy to scale up for application, possessing strong commercial value.

[0052] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A testing device for a solid oxide electrolytic cell using photothermal heating, comprising an outer flow shroud (1), characterized in that, One end of the outer flow cover (1) is equipped with a glass upper flange (2), a light-transmitting plate (3) is installed inside the glass upper flange (2), and a flange assembly (4) is installed at the other end. An inner tube (5) connected to the flange assembly (4) is provided in the internal cavity of the outer flow cover (1). A pressure ring (6) is provided between the inner tube (5) and the light-transmitting plate (3). An electrolytic cell (7) is installed at the top of the inner tube (5), and electrolytic cell sealing rings (8) are installed on the upper and lower sides of the electrolytic cell (7). The outer shroud (1) is connected to an air inlet pipe (11) and an air outlet pipe (12) that communicate with its internal cavity. The inner tube (5) is connected to a steam inlet pipe (13) that communicates with the internal cavity of the inner tube (5) on one side wall near the electrolytic cell (7). The flange assembly (4) is connected to a gas outlet pipe (14) that communicates with the internal cavity of the inner tube (5).

2. The testing device for a solid oxide electrolytic cell using photothermal heating according to claim 1, characterized in that, The light-transmitting plate (3) is provided with light-transmitting plate sealing rings (31) on the upper and lower sides respectively.

3. The testing device for a solid oxide electrolytic cell using photothermal heating according to claim 1, characterized in that, Four elastic connectors (9) are evenly installed on the outer wall of the inner tube (5), and one end of the four elastic connectors (9) is detachably and fixedly connected to the pressure ring (6).

4. The testing device for a solid oxide electrolytic cell using photothermal heating according to claim 3, characterized in that, The elastic connector (9) includes a pull rod (91), a spring (92), and a spring lug (93). The spring lug (93) is fixed on the outer wall of the inner tube (5). One end of the spring (92) is connected to the spring lug (93), and the other end is connected to one end of the pull rod (91). The end of the pull rod (91) away from the spring (92) is fixed on the pressure ring (6).

5. The testing device for a solid oxide electrolytic cell using photothermal heating according to claim 1, characterized in that, The pressure ring (6) has an air inlet (61) on its side that communicates with the air inlet pipe (11), and the inner diameter of the air inlet (61) is greater than or equal to the inner diameter of the air inlet pipe (11).

6. The testing device for a solid oxide electrolytic cell using photothermal heating according to claim 1, characterized in that, The upper surface of the pressure ring (6) is funnel-shaped, and its angle is such that the conical light beam from above can completely pass through the hole in the center of the pressure ring (6), ensuring that the light beam is not blocked by any position of the pressure ring (6).

7. The testing device for a solid oxide electrolytic cell using photothermal heating according to claim 1, characterized in that, The top of the inner tube (5) is fixedly connected to a protruding tube (51), and a through hole is opened on the top surface of the protruding tube (51). The electrolytic cell (7) is located above the through hole, and the reaction chamber inside the protruding tube (51) is connected to the internal cavity of the inner tube (5). One end of the steam inlet pipe (13) passes through the bottom of the inner pipe (5) and protrudes through the flange assembly (4), while the other end is connected to the side wall of the convex pipe (51) and communicates with the reaction chamber. The gas entering through the steam inlet pipe (13) is fully distributed in the space of the reaction chamber.

8. The testing device for a solid oxide electrolytic cell using photothermal heating according to claim 1, characterized in that, The flange assembly (4) includes an upper flange (41), a middle flange (42), and a lower flange (43) that are sequentially sealed from top to bottom. The bottom of the outer flow cover (1) is connected to the upper flange (41). The bottom of the inner tube (5) is integrally formed and fixedly connected to the upper flange (41). The top surface of the middle flange (42) is integrally formed and fixedly connected to a boss (44), which is embedded and fixed in the inner cavity of the inner tube (5).

9. A testing device for a solid oxide electrolytic cell using photothermal heating according to claim 8, characterized in that, The gas discharge pipe (14) is fixed on the boss (44), with one end passing through the lower flange (43) to communicate with the outside, and the other end communicating with the internal cavity of the inner pipe (5). Three outer tubes (46) are installed on the upper flange (41). One end of the three outer tubes (46) extends into the internal cavity of the outer flow cover (1), and the other end passes through the middle flange (42) and the lower flange (43) and communicates with the outside.

10. A testing device for a solid oxide electrolytic cell using photothermal heating according to claim 8, characterized in that, Three conduits (45) are also installed on the boss (44). One end of the three conduits (45) extends through the lower flange (43) to communicate with the outside, and the other end is close to the bottom of the electrolytic cell (7). Two of the conduits (45) are used to insert conductive wires to connect with the electrolytic cell (7), and the other conduit (45) is used to insert a temperature sensor. The temperature sensor is close to the lower surface of the electrolytic cell (7) to measure the surface temperature of the electrolytic cell (7).

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