Experimental device and experimental method for designing runner of electrolytic cell

Abstract

The invention discloses an experimental device and an experimental method for designing an electrolytic bath runner, and belongs to the technical field of water electrolysis experiments. The experimental device for designing the runner of the electrolytic bath comprises a first shell, a second shell, a bubble generation plate, a gas supply assembly and a liquid supply assembly. As the pressure in the gas chamber is greater than that in the liquid chamber, the gas in the gas chamber can pass through the bubble generation plate, and the gas can generate a plurality of bubbles in the liquid in the liquid chamber after flowing through the bubble generation plate, so that power does not need to be supplied to the bubble generation plate; in this way, the generation process of hydrogen bubbles or oxygen bubbles in the water electrolysis process can be simulated, the actual working condition in the flow channel of the electrolytic cell can be fed back truly through an actual physical simulation structure, and therefore the accuracy of obtained relevant data of the flow channel of the electrolytic cell is improved; and the safety of the experimental device for designing the runner of the electrolytic bath can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of water electrolysis experiments, and in particular to an experimental device and an experimental method for designing a flow channel of an electrolytic cell. Background Art

[0002] With the development of technology, hydrogen energy has become a consensus for the low-carbon and clean development of global energy. Electrolysis of water to produce hydrogen is a common industrial production method of hydrogen energy. The principle of electrolysis of water to produce hydrogen is to use electrolysis to decompose water into hydrogen and oxygen.

[0003] The electrolysis of water to produce hydrogen equipment is mainly composed of an electrolyzer, a power supply, a gas separation and collection system, etc. Among them, the electrolyzer is the core component. Direct current is passed into the electrolyzer filled with electrolyte, and water molecules undergo electrochemical reactions on the electrodes to decompose into hydrogen and oxygen. In this process, electrons flow out from the negative electrode of the power supply and are captured by hydrogen ions in the water to generate hydrogen. At the same time, at one end of the positive electrode of the power supply, hydroxide ions lose electrons to generate oxygen and water. The main components of the electrolyzer are electrode plates and ion membranes. The electrode plates are used to conduct current and catalyze water electrolysis reactions, and the ion membranes are used to separate the generated hydrogen and oxygen. Due to the complex overall structure of the electrolysis of water to produce hydrogen equipment and the fact that it operates with electricity, the current main method for designing the electrolyzer flow channel is to simulate the actual operating conditions of the electrolyzer flow channel through computer simulation to obtain simulation data.

[0004] However, during the numerical simulation process, affected by factors such as model selection and condition setting, the simulation model cannot truly feedback the actual working conditions in the electrolytic cell flow channel, resulting in low accuracy of the electrolytic cell flow channel related data. Summary of the invention

[0005] The embodiment of the present application provides an experimental device and an experimental method for designing the flow channel of an electrolytic cell. The problem of low accuracy of the data related to the flow channel of the electrolytic cell obtained in the prior art can be solved. The technical solution is as follows:

[0006] According to one aspect of the present application, there is provided an experimental device for designing a flow channel of an electrolytic cell, comprising: a first shell, a second shell, a bubble generating plate, a gas supply component, and a liquid supply component;

[0007] The first shell and the second shell are respectively located on both sides of the bubble generating plate, the first shell and the bubble generating plate form a gas chamber, the second shell and the bubble generating plate form a liquid chamber, and the second shell has a measuring hole connected to the liquid chamber;

[0008] The gas supply assembly is in communication with the gas chamber and is used to deliver gas to the gas chamber and maintain the pressure value in the gas chamber at a first preset pressure value;

[0009] The liquid supply assembly is in communication with the liquid chamber and is used to deliver liquid to the liquid chamber and maintain the pressure value in the liquid chamber at a second preset pressure value;

[0010] Among them, the first preset pressure value is greater than the second preset pressure value, the bubble generating plate can be switched between an open state and a closed state, and the gas in the gas chamber can generate multiple bubbles in the liquid in the liquid chamber after flowing through the bubble generating plate in the open state.

[0011] Optionally, the bubble generating plate comprises a first plate body and a second plate body which are parallel to each other;

[0012] The first plate has a plurality of through holes;

[0013] The second plate body contacts a side of the first plate body close to the first shell, or contacts a side of the first plate body close to the second shell, and the second plate body can move in a direction parallel to the plate surface of the first plate body so that the bubble generating plate can switch between an open state and a closed state.

[0014] Optionally, the through holes on the first plate body are circular, the diameter of the through holes ranges from 10 micrometers to 50 micrometers, and the opening rate of the first plate body ranges from 50% to 90%.

[0015] Optionally, the liquid supply assembly includes a liquid storage tank, a first liquid pipeline, a second liquid pipeline, a second regulating valve, a liquid pressure gauge and a circulation pump, and the second shell has a liquid inlet and a liquid outlet communicated with the liquid chamber;

[0016] The first liquid pipeline is communicated with the liquid storage tank and the liquid inlet of the second shell respectively, and the circulation pump is installed on the first liquid pipeline;

[0017] The second liquid pipeline is communicated with the liquid outlet of the liquid storage tank and the second shell respectively, and the second regulating valve and the liquid pressure gauge are both installed on the second liquid pipeline.

[0018] Optionally, the second shell includes a bottom plate and a side plate connected to each other, and the side plate is located on a side of the bottom plate close to the first shell;

[0019] There are multiple measuring holes, and all of the measuring holes are located on the bottom plate;

[0020] The liquid inlet and the liquid outlet are located on the side plate, and the liquid inlet and the liquid outlet are arranged opposite to each other in a direction parallel to the plate surface of the bottom plate.

[0021] Optionally, the gas supply assembly includes a gas storage tank, a gas pipeline, a first regulating valve and a gas pressure gauge, and the first shell has a gas inlet connected to the gas chamber;

[0022] The gas pipeline is communicated with the gas storage tank and the gas inlet hole of the first shell respectively;

[0023] The first regulating valve and the gas pressure gauge are both installed on the gas pipeline.

[0024] Optionally, both the first shell and the second shell include transparent shells;

[0025] The experimental device for designing the flow channel of the electrolytic cell also includes a fluorescent powder bin and a powder channel;

[0026] The fluorescent powder bin contains fluorescent powder, and the powder channel is communicated with the fluorescent powder bin and the gas pipeline respectively.

[0027] Optionally, the gas includes hydrogen, helium, oxygen or nitrogen, and the liquid includes water or an alkaline solution.

[0028] Optionally, the experimental device for designing the flow channel of the electrolytic cell further comprises a mounting bracket and a rotating shaft, wherein the rotating shaft is rotatably connected to the mounting bracket;

[0029] The first shell, the second shell and the bubble generating plate are all connected to the rotating shaft and can rotate around the axis of the rotating shaft. The extending direction of the axis of the rotating shaft is parallel to the arrangement direction of the first shell and the second shell.

[0030] According to another aspect of the present application, an experimental method for designing an electrolytic cell flow channel is provided, the method being applied to the above-mentioned experimental device for designing an electrolytic cell flow channel, the method comprising:

[0031] Introducing liquid into the liquid chamber through the liquid supply assembly, and maintaining the pressure value in the liquid chamber at the second preset pressure value, wherein the second preset pressure value ranges from 1.5 MPa to 1.6 MPa;

[0032] Introducing gas into the gas chamber through the gas supply assembly, and maintaining the pressure value in the gas chamber at the first preset pressure value, wherein the first preset pressure value ranges from 1.6 MPa to 2.5 MPa;

[0033] Switching the bubble generating plate from a closed state to an open state, so that the gas in the gas chamber flows through the bubble generating plate in the open state and can generate a plurality of bubbles in the liquid in the liquid chamber;

[0034] The detection device is extended into the liquid chamber through the measurement hole to obtain detection data.

[0035] The beneficial effects of the technical solution provided by the embodiment of the present application are:

[0036] Provided is an experimental device for designing an electrolytic cell flow channel, comprising: a first shell, a second shell, a bubble generating plate, a gas supply component and a liquid supply component. When the bubble generating plate is in an open state, since the pressure in the gas chamber is greater than the pressure in the liquid chamber, the gas in the gas chamber can pass through the bubble generating plate, and the gas can generate a plurality of bubbles in the liquid in the liquid chamber after passing through the bubble generating plate. In this way, there is no need to supply power to the bubble generating plate, and the generation process of hydrogen bubbles or oxygen bubbles in the electrolysis of water can be simulated through the gas chamber, the liquid chamber and the bubble generating plate located between the gas chamber and the liquid chamber. Through the actual physical simulation structure, the actual working conditions in the electrolytic cell flow channel can be fed back more realistically, thereby improving the accuracy of obtaining electrolytic cell flow channel related data, solving the problem of low accuracy of electrolytic cell flow channel related data obtained in related technologies, and improving the safety and energy saving of the experimental device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 It is a schematic diagram of the structure of an experimental device for designing a flow channel of an electrolytic cell provided in an embodiment of the present application;

[0039] Figure 2 It is a structural schematic diagram of a second housing and an experimental instrument provided in an embodiment of the present application;

[0040] Figure 3 It is a structural schematic diagram of a bubble generating plate provided in an embodiment of the present application;

[0041] Figure 4 It is a rotational schematic diagram of a first shell, a second shell and a bubble generating plate provided in an embodiment of the present application;

[0042] Figure 5 is a flow chart of an experimental method for designing a flow channel of an electrolytic cell provided in an embodiment of the present application;

[0043] Figure 6 It is a schematic diagram of the structure of an electrolytic cell provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0045] Although the present application can be easily presented as embodiments of different forms, only some of the specific embodiments are shown in the drawings and described in detail in this specification. It should be understood that this description should be regarded as an exemplary description of the principles of the present application and is not intended to limit the present application to that described herein.

[0046] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the application, rather than implying that each embodiment of the application must have the described features. In addition, it should be noted that this specification describes many features. Although some features can be combined together to illustrate possible system designs, these features can also be used for other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0047] In the embodiments shown in the drawings, the indications of directions (such as up, down, left, right, front and back) used to explain the structure and movement of various elements of the present application are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indications of these directions also change accordingly.

[0048] Please refer to Figure 1 , Figure 1 It is a structural schematic diagram of an experimental device 10 for designing an electrolytic cell flow channel provided in an embodiment of the present application. The experimental device 10 for designing an electrolytic cell flow channel may include: a first shell 11, a second shell 12, a bubble generating plate 13, an air supply component 14 and a liquid supply component 15.

[0049] The first shell 11 and the second shell 12 can be located on both sides of the bubble generating plate 13, respectively. The first shell 11 and the bubble generating plate 13 can enclose a gas chamber, and the second shell 12 and the bubble generating plate 13 can enclose a liquid chamber. The second shell 12 has a measuring hole connected to the liquid chamber. The first shell 11 can be sealed and connected to one side of the bubble generating plate 13, and the second shell 12 can be sealed and connected to the other side of the bubble generating plate 13, so that the gas chamber and the liquid chamber have better sealing properties. The bubble generating plate 13 can be switched between an open state and a closed state. When the bubble generating plate 13 is in an open state, the gas chamber and the liquid chamber can be connected. When the bubble generating plate 13 is in a closed state, the gas chamber and the liquid chamber can be isolated by the bubble generating plate 13.

[0050] The gas supply assembly 14 can be connected to the gas chamber and used to deliver gas to the gas chamber and maintain the pressure value in the gas chamber at a first preset pressure value. The liquid supply assembly 15 can be connected to the liquid chamber and used to deliver liquid to the liquid chamber and maintain the pressure value in the liquid chamber at a second preset pressure value.

[0051] Among them, the first preset pressure value is greater than the second preset pressure value, and the gas in the gas chamber can generate multiple bubbles in the liquid in the liquid chamber after flowing through the bubble generating plate 13 in the open state. That is, when the bubble generating plate 13 is in the open state, since the pressure in the gas chamber is greater than the pressure in the liquid chamber, the gas in the gas chamber can pass through the bubble generating plate 13, and the bubble generating plate 13 can divert the airflow passing through it into multiple airflows, so that the gas in the gas chamber can generate multiple bubbles in the liquid in the liquid chamber after flowing through the bubble generating plate 13 in the open state. In this way, there is no need to supply power to the bubble generating plate 13, that is, the generation process of hydrogen bubbles or oxygen bubbles in the process of electrolysis of water can be simulated through the gas chamber, the liquid chamber, and the bubble generating plate 13 located between the gas chamber and the liquid chamber, which can improve the safety and energy saving of the experimental device 10 for designing the flow channel of the electrolyzer.

[0052] The test end of the experimental instrument can be extended into the liquid chamber with bubbles through the measuring hole to judge the temperature distribution law, flow velocity distribution law, etc. in the liquid chamber according to the measured temperature, flow velocity, etc., so as to grasp the flow law and characteristics of the bubbles in the electrolytic cell.

[0053] Furthermore, since the pressure in the gas chamber is greater than the pressure in the liquid chamber, it is possible to prevent the liquid from flowing back into the gas chamber through the bubble generating plate 13 .

[0054] In summary, the embodiment of the present application provides an experimental device 10 for designing an electrolytic cell flow channel, comprising: a first shell 11, a second shell 12, a bubble generating plate 13, an air supply component 14 and a liquid supply component 15. When the bubble generating plate 13 is in an open state, since the pressure in the gas chamber is greater than the pressure in the liquid chamber, the gas in the gas chamber can pass through the bubble generating plate 13, and the gas can generate multiple bubbles in the liquid in the liquid chamber after flowing through the bubble generating plate 13. In this way, there is no need to supply power to the bubble generating plate 13, that is, the generation process of hydrogen bubbles or oxygen bubbles in the electrolysis process of water can be simulated through the gas chamber, the liquid chamber and the bubble generating plate 13 located between the gas chamber and the liquid chamber. Through the actual physical simulation structure, the actual working conditions in the electrolytic cell flow channel can be more realistically fed back, thereby improving the accuracy of obtaining electrolytic cell flow channel related data, which can solve the problem of low accuracy of electrolytic cell flow channel related data obtained in related technologies, and can also improve the safety and energy saving of the experimental device.

[0055] Please refer to Figure 2 , Figure 2 1 is a schematic diagram of the structure of a second shell 12 and an experimental instrument 20 provided in an embodiment of the present application. A plurality of measuring holes k1 may be distributed on the side of the second shell 12 facing away from the first shell 11. For example, the number of measuring holes k1 may be 6, 8, 10, 12 or 14, or more, which is not limited in the embodiment of the present application. The experimental instrument 20 may have a plurality of detection ends, and the plurality of detection ends may extend into the liquid chamber of the second shell 12 through the plurality of measuring holes k1. For example, the experimental instrument may include at least one of an ultrasonic flow meter and an ultrasonic thermometer.

[0056] In an exemplary embodiment, the experimental device 10 for designing the flow channel of the electrolytic cell further includes: a sealing plug (not shown in the figure) and a sealing ring (not shown in the figure), and the sealing plug can be located in the measuring hole k1. When a certain measuring hole k1 is temporarily idle, the sealing plug can be placed in the measuring hole k1 to ensure the sealing of the liquid chamber. The sealing ring can be located between the detection end of the experimental instrument 20 and the hole wall of the measuring hole k1, which can ensure the sealing of the liquid chamber when measuring data. The sealing plug and the sealing ring can both be silicone plugs, and the materials of the sealing plug and the sealing ring can include silicone resin. The silicone plug has good high temperature resistance, chemical corrosion resistance and environmental protection performance, and can maintain its physical properties and elasticity at different ambient temperatures.

[0057] In an exemplary embodiment, the size of the gas chamber in the direction perpendicular to the plate surface of the bubble generating plate 13 ranges from 100 mm to 200 mm. Exemplarily, the size of the gas chamber in the direction perpendicular to the plate surface of the bubble generating plate 13 ranges from 100 mm to 120 mm, 150 mm, and 200 mm. The size of the liquid chamber in the direction perpendicular to the plate surface of the bubble generating plate 13 ranges from 3 mm to 5 mm. Exemplarily, the size of the liquid chamber in the direction perpendicular to the plate surface of the bubble generating plate 13 ranges from 3 mm to 5 mm. Exemplarily, the size of the liquid chamber in the direction perpendicular to the plate surface of the bubble generating plate 13 ranges from 3 mm to 5 mm. Exemplarily, the size of the liquid chamber in the direction perpendicular to the plate surface of the bubble generating plate 13 ranges from 3 mm to 5 mm. The size of the liquid chamber in this size range is relatively close to the size of the actual electrolytic cell, which can improve the accuracy of the experimental data.

[0058] Please refer to Figure 1In an optional embodiment, the liquid supply assembly 15 may include a liquid storage tank 151, a first liquid pipeline 152, a second liquid pipeline 153, a second regulating valve 154, a liquid pressure gauge 155 and a circulation pump 156, and the second housing 12 has a liquid inlet k3 and a liquid outlet k4 communicated with the liquid chamber. The first liquid pipeline 152 can be communicated with the liquid inlet k3 of the liquid storage tank 151 and the second housing 12 respectively, and the circulation pump 156 is installed on the first liquid pipeline 152. The second liquid pipeline 153 can be communicated with the liquid storage tank 151 and the liquid outlet k4 of the second housing 12 respectively, and the second regulating valve 154 and the liquid pressure gauge 155 are both installed on the second liquid pipeline 153.

[0059] Through the cooperation of the liquid storage tank 151, the first liquid pipeline 152, and the second liquid pipeline 153, a liquid flow channel can be formed in the liquid chamber to simulate the liquid flow channel in an actual electrolytic cell, and the pressure in the liquid chamber can be adjusted by the second regulating valve 154 and the liquid pressure gauge 155.

[0060] The liquid inlet k3 and the liquid outlet k4 on the second shell 12 can be arranged relative to each other. Exemplarily, the second shell 12 can have two liquid inlets k3 and two liquid outlets k4, the two liquid inlets k3 and the two liquid outlets k4 can correspond one to one, and any liquid inlet k3 can be arranged relative to the corresponding liquid outlet k4, and any liquid inlet k3 can be arranged relative to the corresponding liquid outlet k4 in a direction parallel to the plate surface of the bubble generating plate 13.

[0061] Please refer to Figure 2 In an optional embodiment, the second shell 12 may include a bottom plate 121 and a side plate 122 connected to each other, and the side plate 122 is located on a side of the bottom plate 121 close to the first shell 11; there are multiple measuring holes k1, and the multiple measuring holes k1 are all located on the bottom plate 121; the liquid inlet k3 and the liquid outlet k4 are located on the side plate 122, and the liquid inlet k3 and the liquid outlet k4 are arranged opposite to each other in a direction parallel to the plate surface of the bottom plate 121. In this way, by arranging the liquid inlet k3 and the liquid outlet k4 on both sides of the second shell 12, respectively, when the liquid flows in the liquid chamber between the second shell 12 and the bubble generating plate 13, the liquid flow state in the actual electrolytic cell can be simulated.

[0062] Please refer to Figure 1 and Figure 3 , Figure 31 is a schematic diagram of the structure of a bubble generating plate 13 provided in an embodiment of the present application. In an optional embodiment, the bubble generating plate 13 may include a parallel first plate body 131 and a second plate body 132; the first plate body 131 may have a plurality of through holes k2, and the second plate body 132 may be a complete plate body without through holes. After the gas in the gas chamber passes through the plurality of through holes k2 on the first plate body 131, it may be divided into a plurality of air streams, and the plurality of air streams may form a plurality of bubbles after flowing into the liquid in the liquid chamber, so as to simulate the generation of hydrogen bubbles or oxygen bubbles in the process of water electrolysis.

[0063] The second plate 132 contacts a surface of the first plate 131 close to the first shell 11, or contacts a surface of the first plate 131 close to the second shell 12, and the second plate 132 can move in a direction parallel to the plate surface of the first plate 131, so that the bubble generating plate 13 switches between the open state and the closed state. When the second plate 132 moves to a position staggered from the first plate 131, the bubble generating plate 13 is in the open state, and when the second plate 132 moves to a position overlapping with the first plate 131, the bubble generating plate 13 is in the closed state.

[0064] In an optional embodiment, the through hole k2 on the first plate body 131 can be circular, the diameter of the through hole k2 ranges from 10 microns to 50 microns, and the porosity of the first plate body 131 ranges from 50% to 90%. When the gas passes through the circular through hole k2, the gas flow out of the circular through hole k2 will form bubbles in the liquid, and the distribution of multiple bubbles in the liquid can also be made more uniform. Exemplarily, the porosity of the first plate body 131 is 50%, 60%, 70%, 80% or 90%.

[0065] In an optional embodiment, the gas includes hydrogen or helium, oxygen or nitrogen, etc., and the liquid includes water or an alkaline solution.

[0066] Exemplarily, the gas includes helium, and the liquid includes 30% sodium hydroxide solution or 30% potassium hydroxide solution. Compared with hydrogen, helium has better stability, and the molecular weight of helium is similar to that of hydrogen. Therefore, using helium as a gas source can not only be close to the relevant characteristics of hydrogen in the process of moving in the device, but also improve the safety of the entire experiment.

[0067] At the same time, by adopting the bubble generating plate 13, the bubble generation process is simulated, which not only eliminates the need for the actual electrolysis operation step of powering on, but also avoids the risk of hydrogen explosion, thereby improving the practical operability and safety performance of the experimental device.

[0068] Please refer to Figure 1In an optional embodiment, the gas supply assembly 14 may include a gas tank 141, a gas pipeline 142, a first regulating valve 143 and a gas pressure gauge 144, the first shell 11 has an air inlet k5 connected to the gas chamber; the gas pipeline 142 is respectively connected to the gas tank 141 and the air inlet hole of the first shell 11; the first regulating valve 143 and the gas pressure gauge 144 are both installed on the gas pipeline 142.

[0069] The air inlet k5 can be located on the side of the first shell 11 facing away from the second shell 12. The first shell 11 can have multiple air inlets k5, and the multiple air inlets k5 can be evenly distributed on the side of the first shell 11 facing away from the second shell 12, so that the gas can enter the gas chamber evenly. Exemplarily, the first shell 11 can have 6 air inlets k5.

[0070] The pressure in the gas pipeline 142 and the gas chamber can be monitored in real time by the gas pressure gauge 144. The experimenter can turn the first regulating valve 143 to adjust the pressure in the gas chamber according to the value displayed on the gas pressure gauge 144. In an exemplary embodiment, the gas pressure gauge 144 can be an electronic gas pressure gauge, and the first regulating valve 143 can include a solenoid valve. The electronic gas pressure gauge 144 can be connected to the solenoid valve, and the solenoid valve can perform adaptive feedback adjustment on the pressure in the gas chamber according to the pressure detected by the electronic gas pressure gauge 144.

[0071] Please refer to Figure 1 In an optional embodiment, the first shell 11 and the second shell 12 may both include a transparent shell; the transparent shell may include a transparent acrylic plate. The experimental device 10 for designing the flow channel of the electrolytic cell also includes a fluorescent powder bin 16 and a powder channel 17; the fluorescent powder bin 16 contains fluorescent powder, and the powder channel 17 is connected to the fluorescent powder bin 16 and the gas pipeline 142 respectively.

[0072] A certain amount of fluorescent powder is placed in the fluorescent powder bin 16. The fluorescent powder can be quantitatively added into the gas pipeline 142 as a gas colorant and enter the gas chamber together with the gas; so that the experimenter can more clearly observe the movement state and characteristics of the gas-liquid two-phase flow in the gas chamber and the liquid chamber.

[0073] Compared with the simulation model in the related art, in the embodiment of the present application, through the actual physical simulation structure, the movement state and characteristics of the gas-liquid two-phase flow in the flow channel can be fed back more realistically and intuitively, thereby guiding the flow channel design optimization of the electrolytic cell.

[0074] Please refer to Figure 1In an optional embodiment, the experimental device 10 for designing the flow channel of the electrolytic cell may further include: an exhaust pipe 18 and an exhaust valve 19, and the gas supply component 14 may further include a gas flow meter 145; one end of the exhaust pipe 18 is connected to the gas pipe 142, and the exhaust valve 19 is installed on the exhaust pipe 18; the gas flow meter 145 is installed on the gas pipe 142.

[0075] The gas storage tank 141 may include a helium tank, that is, the helium tank may be used as a helium gas source generating device for the system, and the drain valve 19 may be used as an emergency drain valve, which may prevent the whole experimental device from having uncontrollable pressure during operation and avoid explosion accidents.

[0076] The position where the exhaust pipe 18 is connected to the gas pipe 142 can be located on the side of the position where the powder channel 17 and the gas pipe 142 are connected close to the gas tank 141, and the gas regulating valve, the gas flow meter 145 and the gas pressure gauge 144 can be located on the side of the position where the powder channel 17 and the gas pipe 142 are connected away from the gas tank 141, and are arranged in sequence in the direction away from the gas tank 141 and connected to the gas pipe 142.

[0077] Please refer to Figure 4 , Figure 4 It is a rotational schematic diagram of a first shell 11, a second shell 12 and a bubble generating plate 13 provided in an embodiment of the present application. In an optional embodiment, the experimental device 10 for designing the flow channel of the electrolytic cell also includes a connected mounting bracket (not shown in the figure) and a rotating shaft (not shown in the figure); the rotating shaft is rotatably connected to the mounting bracket, and the first shell 11, the second shell 12 and the bubble generating plate 13 are connected to the rotating shaft, and can rotate relative to the mounting bracket along the axis of the rotating shaft, and the axis of the rotating shaft is parallel to the arrangement direction of the first shell 11, the bubble generating plate 13 and the second shell 12. That is, the bubble generating assembly composed of the first shell 11, the second shell 12 and the bubble generating plate 13 can be rotated relative to the mounting bracket so that the bubble generating assembly is tilted relative to the ground in different postures. Exemplarily, during the rotation process, the plate surface of the bubble generating plate 13 can remain perpendicular to the ground to simulate the positional relationship between the actual electrolytic cell and the ground.

[0078] Exemplarily, the mounting bracket has a rotating shaft, and the bubble generating components can be connected to the rotating shaft and rotate around the axis of the rotating shaft. The extension direction of the axis of the rotating shaft can be parallel to the arrangement direction of the first shell 11 and the second shell 12, and perpendicular to the plate surface of the bubble generating plate 13. The liquid inlet k3 and the liquid outlet k4 of the second shell 12 can be arranged relatively. When the bubble generating component rotates around the axis of the rotating shaft, the angle between the shortest line between the liquid inlet k3 and the liquid outlet k4 of the second shell 12 and the ground can range from 0° to 90°. For example, the angle between the shortest line between the liquid inlet k3 and the liquid outlet k4 of the second shell 12 and the ground can range from 0° to 90°. For example, the angle between the shortest line between the liquid inlet k3 and the liquid outlet k4 of the second shell 12 and the ground can range from 0°, 20°, 30°, 60°, 80° or 90°.

[0079] For example, please refer to Figure 1 , the axis of the rotating shaft can be Figure 1 The shortest lines between two points AB in the bubble generating assembly shown are parallel.

[0080] In this way, the influence of different design angles of the liquid inlet and outlet k4 of the actual electrolytic cell on the system operation can be obtained by obtaining relevant parameters in the liquid chamber used to simulate the electrolytic cell at different placement angles.

[0081] In summary, the embodiment of the present application provides an experimental device 10 for designing an electrolytic cell flow channel, comprising: a first shell 11, a second shell 12, a bubble generating plate 13, an air supply component 14 and a liquid supply component 15. When the bubble generating plate 13 is in an open state, since the pressure in the gas chamber is greater than the pressure in the liquid chamber, the gas in the gas chamber can pass through the bubble generating plate 13, and the gas can generate multiple bubbles in the liquid in the liquid chamber after flowing through the bubble generating plate 13. In this way, there is no need to supply power to the bubble generating plate 13, that is, the generation process of oxygen bubbles or hydrogen bubbles in the electrolysis process of water can be simulated through the gas chamber, the liquid chamber and the bubble generating plate 13 located between the gas chamber and the liquid chamber. Through the actual physical simulation structure, the actual working conditions in the electrolytic cell flow channel can be more realistically fed back, thereby improving the accuracy of obtaining electrolytic cell flow channel related data, which can solve the problem of low accuracy of electrolytic cell flow channel related data obtained in related technologies, and can also improve the safety and energy saving of the experimental device.

[0082] Please refer to Figure 5 , Figure 5 : is a flow chart of an experimental method for designing an electrolytic cell flow channel provided in an embodiment of the present application. The method can be applied to the experimental device 10 for designing an electrolytic cell flow channel in any of the above embodiments. The method may include:

[0083] Step 201 : introducing liquid into the liquid chamber through the liquid supply assembly 15 , and maintaining the pressure value in the liquid chamber at a second preset pressure value.

[0084] The second preset pressure value ranges from 1.5 MPa to 1.6 MPa. Exemplarily, the second preset pressure value is 1.5 MPa, 1.51 MPa, 1.53 MPa, 1.58 MPa or 1.6 MPa.

[0085] Water or 30% sodium hydroxide solution (NaOH) is injected into the liquid storage tank 151. At this time, the bubble generating plate 13 is in a closed state, and then the circulation pump 156 is started. The liquid chamber surrounded by the second shell 12 and the bubble generating plate 13 is gradually filled with liquid until the liquid pressure displayed by the liquid pressure gauge 155 reaches 1.6Mpa. At this time, the second regulating valve 154 located outside the liquid outlet k4 of the second shell 12 is opened, and the liquid will flow out of the liquid chamber and return to the liquid storage tank 151. After the liquid side circulation is opened, the second regulating valve 154 is fine-tuned to keep the pressure in the liquid space between 1.5Mpa and 1.6Mpa. At this time, the liquid phase process is opened and runs stably.

[0086] Step 202 : introducing gas into the gas chamber through the gas supply assembly 14 , and maintaining the pressure value in the gas chamber at a first preset pressure value.

[0087] The first preset pressure value ranges from 1.6 MPa to 2.5 MPa. For example, the first preset pressure value is 1.6 MPa, 1.7 MPa, 1.58 MPa, 2.5 MPa or 2.5 MPa. The gas storage tank 141 may include a helium tank having a manual valve and a pressure reducing valve.

[0088] Open the hand valve and the first regulating valve 143 on the top of the helium tank, and adjust the flow rate through the first regulating valve 143. After the flow rate and pressure are stable, evenly add fluorescent powder into the gas pipe 142. At this time, the pressure in the gas chamber surrounded by the first shell 11 and the bubble generating plate 13 will gradually rise. Observe the values ​​of the gas pressure gauge 144 and the gas flow meter 145 on the gas pipe 142 to keep the pressure in the gas chamber between 1.7Mpa and 2.5Mpa, and the gas flow rate between 50L / min and 70L / min.

[0089] Step 203 , switching the bubble generating plate 13 from the closed state to the open state, so that the gas in the gas chamber can generate a plurality of bubbles in the liquid in the liquid chamber after flowing through the bubble generating plate 13 in the open state.

[0090] The second plate 132 in the bubble generating plate 13 is slowly withdrawn until the second plate 132 is withdrawn to a position staggered from the first plate 131, that is, when the second plate 132 does not block the position of the plurality of through holes k2 on the first plate 131, the second plate 132 is stopped from being moved, so that the bubble generating plate 13 is in an open state. In this process, the pressure reducing valve on the helium tank and the first regulating valve 143 on the gas pipeline 142 need to be fine-tuned, and the pressure value of the gas pressure gauge 144 on the gas pipeline 142 and the value on the gas flow meter 145 are observed again, so that the pressure in the gas chamber is maintained between 1.6Mpa and 2.5Mpa, and the gas flow rate is between 50L / min and 70L / min. At this time, the gas phase circulation is opened, and the experimental device operates stably.

[0091] Step 204 , extend the detection device into the liquid chamber through the detection hole k1 to obtain detection data.

[0092] After the liquid phase and gas phase processes officially start to circulate according to the preset parameters, the gas and liquid in the experimental device can be observed and data can be collected. First, the flow trajectory and aggregation of bubbles in the liquid phase can be observed through the second shell 12 made of acrylic material; then 12 thermometers are respectively inserted into the 12 measuring holes k1 on the second shell 12. At this time, the temperature distribution at various locations on the liquid phase surface can be synchronously read out, and the temperature distribution curve is plotted with the horizontal and vertical coordinates based on this parameter to determine the temperature difference law; similarly, the flow rate meter can be respectively inserted into the 12 measuring holes k1 on the second shell 12, and the flow velocity distribution at various locations on the liquid phase surface can be synchronously read out. The flow velocity distribution curve is plotted with the horizontal and vertical coordinates based on this parameter to determine the flow velocity difference law.

[0093] Through step 201 to step 204, the collection of experimental data will be completed. After that, the experimental data at different angles can be obtained by adjusting the inclination angle of the bubble generating component and executing steps 201 to step 204 again. Exemplarily, the angle between the shortest line between the liquid inlet k3 and the liquid outlet k4 of the second shell 12 and the ground is 0°. When the angle between the shortest line between the liquid inlet k3 and the liquid outlet k4 of the second shell 12 and the ground is 30°, 60° and 90°, steps 201 to step 204 can be repeated 3 times. In this way, the bubble flow aggregation law and the temperature and flow velocity distribution law at different inclination angles can be obtained.

[0094] For example, the specific parameters of bubble aggregation, temperature, and flow rate distribution at different angles are as follows:

[0095]

[0096]

[0097] Among them, Figure 2 As shown, the 12 measuring holes k1 on the second shell 12 may include a1, a2, a3, a4, b1, b2, b3, b4, c1, c2, c3 and c4. The 12 measuring holes k1 may be arranged in an array on the second shell 12. It can be seen from the rules in the above table data that at 0° and 90°, b1~b4 are all in the non-flow channel area, that is, the dead zone, where the flow velocity is lower and the bubbles are more densely gathered, and the bubbles are not easily taken out of the reaction zone; at 30 degrees and 60 degrees, b1~b4 are partially in the cross-flow area, while a1~a4, c1~c4 are still in the flow channel area as a whole, so the bubble distribution in the entire internal space is relatively uniform, but due to the effect of gravity, the dead zone increases, and the number of areas with large bubble aggregation increases, but the flow velocity distribution and temperature distribution in the area are relatively uniform. Therefore, the actual electrolytic cell structure can be optimized by combining factors such as the inclination setting position and the inlet and outlet design positions. For example, please refer to Figure 6 , Figure 6 It is a structural schematic diagram of an electrolytic cell provided in an embodiment of the present application. It can be seen that the electrolytic cell has 6 liquid inlets k3 and 6 liquid outlets k4. The angle between the shortest line between the 6 liquid inlets k3 and the center point of the electrolytic cell and the normal line can be 5°, 30° and 40°, and the angle between the shortest line between the 6 liquid outlets k4 and the center point of the electrolytic cell and the normal line can be 10°, 20° and 30°, and the extension direction of the normal line can be perpendicular to the ground. In this way, compared with arranging the liquid inlet k3 and the liquid outlet k4 in a direction perpendicular to the ground, the liquid flow rate distribution and temperature distribution in the electrolytic cell can be made more uniform.

[0098] It should be noted that in the accompanying drawings, the size of the region may be exaggerated for clarity of illustration. It is also understood that when an element is referred to as being "on" another element, it may be directly on the other element, or there may be an intermediate element. In addition, it is understood that when an element is referred to as being "under" another element, it may be directly under the other element, or there may be more than one intermediate element. In addition, it is also understood that when an element is referred to as being "between" two elements, it may be the only layer between the two elements, or there may be more than one intermediate element. Similar reference numerals throughout the text indicate similar elements.

[0099] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0100] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An experimental device for designing a flow channel of an electrolytic cell, characterized in that: include: A first shell, a second shell, a bubble generating plate, an air supply assembly and a liquid supply assembly; The first shell and the second shell are respectively located on both sides of the bubble generating plate, the first shell and the bubble generating plate form a gas chamber, the second shell and the bubble generating plate form a liquid chamber, and the second shell has a measuring hole connected to the liquid chamber; The gas supply assembly is in communication with the gas chamber and is used to deliver gas to the gas chamber and maintain the pressure value in the gas chamber at a first preset pressure value; The liquid supply assembly is in communication with the liquid chamber and is used to deliver liquid to the liquid chamber and maintain the pressure value in the liquid chamber at a second preset pressure value; Among them, the first preset pressure value is greater than the second preset pressure value, the bubble generating plate can be switched between an open state and a closed state, and the gas in the gas chamber can generate multiple bubbles in the liquid in the liquid chamber after flowing through the bubble generating plate in the open state.

2. The experimental device for designing the flow channel of an electrolytic cell according to claim 1, characterized in that: The bubble generating plate comprises a first plate body and a second plate body which are parallel to each other; The first plate has a plurality of through holes; The second plate body contacts a side of the first plate body close to the first shell, or contacts a side of the first plate body close to the second shell, and the second plate body can move in a direction parallel to the plate surface of the first plate body so that the bubble generating plate can switch between an open state and a closed state.

3. The experimental device for designing the flow channel of an electrolytic cell according to claim 2, characterized in that: The through holes on the first plate body are circular, the diameter of the through holes ranges from 10 microns to 50 microns, and the opening rate of the first plate body ranges from 50% to 90%.

4. The experimental device for designing the flow channel of an electrolytic cell according to any one of claims 1 to 3, characterized in that: The liquid supply assembly includes a liquid storage tank, a first liquid pipeline, a second liquid pipeline, a second regulating valve, a liquid pressure gauge and a circulation pump, and the second housing has a liquid inlet and a liquid outlet communicated with the liquid chamber; The first liquid pipeline is communicated with the liquid storage tank and the liquid inlet of the second shell respectively, and the circulation pump is installed on the first liquid pipeline; The second liquid pipeline is communicated with the liquid outlet of the liquid storage tank and the second shell respectively, and the second regulating valve and the liquid pressure gauge are both installed on the second liquid pipeline.

5. The experimental device for designing the flow channel of an electrolytic cell according to claim 4, characterized in that: The second shell includes a bottom plate and a side plate connected to each other, and the side plate is located on a side of the bottom plate close to the first shell; There are multiple measuring holes, and all of the measuring holes are located on the bottom plate; The liquid inlet and the liquid outlet are located on the side plate, and the liquid inlet and the liquid outlet are arranged opposite to each other in a direction parallel to the plate surface of the bottom plate.

6. The experimental device for designing the flow channel of an electrolytic cell according to any one of claims 1 to 3, characterized in that: The gas supply assembly includes a gas storage tank, a gas pipeline, a first regulating valve and a gas pressure gauge, and the first shell has a gas inlet communicated with the gas chamber; The gas pipeline is communicated with the gas storage tank and the gas inlet hole of the first shell respectively; The first regulating valve and the gas pressure gauge are both installed on the gas pipeline.

7. The experimental device for designing the flow channel of an electrolytic cell according to claim 6, characterized in that: The first shell and the second shell both include a transparent shell; The experimental device for designing the flow channel of the electrolytic cell also includes a fluorescent powder bin and a powder channel; The fluorescent powder bin contains fluorescent powder, and the powder channel is communicated with the fluorescent powder bin and the gas pipeline respectively.

8. The experimental device for designing the flow channel of an electrolytic cell according to claim 1, characterized in that: The gas includes hydrogen, helium, oxygen or nitrogen, and the liquid includes water or an alkaline solution.

9. The experimental device for designing the flow channel of an electrolytic cell according to claim 1, characterized in that: The experimental device for designing the flow channel of the electrolytic cell further comprises a mounting bracket and a rotating shaft, wherein the rotating shaft is rotatably connected to the mounting bracket; The first shell, the second shell and the bubble generating plate are all connected to the rotating shaft and can rotate around the axis of the rotating shaft. The extending direction of the axis of the rotating shaft is parallel to the arrangement direction of the first shell and the second shell.

10. An experimental method for designing a flow channel of an electrolytic cell, characterized in that: The method is applied to the experimental device for designing the flow channel of an electrolytic cell according to any one of claims 1 to 9, and the method comprises: Introducing liquid into the liquid chamber through the liquid supply assembly, and maintaining the pressure value in the liquid chamber at the second preset pressure value, wherein the second preset pressure value ranges from 1.5 MPa to 1.6 MPa; Introducing gas into the gas chamber through the gas supply assembly, and maintaining the pressure value in the gas chamber at the first preset pressure value, wherein the first preset pressure value ranges from 1.6 MPa to 2.5 MPa; Switching the bubble generating plate from a closed state to an open state, so that the gas in the gas chamber flows through the bubble generating plate in the open state and can generate a plurality of bubbles in the liquid in the liquid chamber; The detection device is extended into the liquid chamber through the measurement hole to obtain detection data.

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