A device and method for quantitative detection of gas electrolysis products in laser jet electrolytic composite machining

Abstract

A kind of gas electrolytic product quantitative detection device and method in laser jet electrolytic composite machining, belong to laser-electrolytic composite machining field, including gas pressure balance unit, gas collection unit and manual pressurizing unit.Gas pressure balance device connects U-shaped tube, detects the gas pressure in gas collection device.U-shaped tube is also connected to gas collection device, and gas collection device carries out laser jet electrolytic composite machining.Gas collection device connects manual pressurizing device, and is used for the gas tightness detection of device before quantitative detection gas electrolytic product.Manual pressurization is carried out in the laser jet electrolytic composite machining gas electrolytic product quantitative detection device after sealing, electrolyte is pumped by gear pump after confirming that device gas tightness is good;Suction gas in gas collection bottle makes the liquid level height of scale tube left side of gas pressure balance device and the liquid level height of right side of U-shaped tube keep level, and the volume of gas suctioned in syringe is the volume of gas electrolytic product.The present application can realize the detection of the gas tightness of overall device, and can accurately control laser power in laser jet electrolytic composite machining.

Description

Technical Field

[0001] This invention relates to a device and method for quantitative detection of gas electrolysis products in laser jet electrolysis composite machining, belonging to the field of laser-electrolytic milling composite machining. Background Technology

[0002] Laser-jet electrolytic composite machining not only possesses the advantages of laser processing (good localization, high precision, high surface quality, and no processing stress) but also exhibits significant synergistic effects. However, the energy control of the laser beam within the electrolyte stream during laser-jet electrolytic composite machining remains a challenge. Because hydrogen gas generated during the reduction of hydrogen ions at the cathode enters the jet stream during laser-jet electrolytic machining, the laser beam repeatedly passes through the interface between the electrolyte and the gas bubbles. According to the scattering laws and Beer-Raphson law, the laser attenuation coefficient increases in an electrolyte containing gas bubbles. This results in the laser energy at the anode surface being significantly lower than the laser output energy, thus failing to achieve the synergistic effect of laser-jet electrolytic composite machining. Furthermore, the recast layer caused by the ablation of the anode workpiece surface due to high laser pulse energy leads to a decrease in surface quality. To achieve the synergistic effect of laser-jet electrolytic composite machining and ensure surface quality, quantitative measurement of the gas generated during laser-jet electrolytic machining is a necessary condition for precise control of laser energy.

[0003] CN108907383A proposes a device for generating and collecting electrolytic gas products, which achieves the generation and collection of electrolytic gas products through an electrolytic processing module, a gas-liquid separation module, and a gas collection module. However, quantitative measurement is difficult to achieve when using a gas collection bladder to collect gaseous electrolytic products; in jet electrolytic processing, when the current density is 3.05 A / cm²... 2 When the processing time is 180s, the volume of gas produced is about 2-3ml; the trace amount of gas electrolysis products limits the use of the gas collection bladder; in addition, measuring trace amounts of gas electrolysis products requires airtightness testing of the entire device to effectively ensure the accuracy of the measurement.

[0004] The journal *Electrochimica Acta*, Vol. 49, No. 13, 2004, pp. 2085-2095, designed an anode gas collection device for electrolytic machining. The device uses a water displacement method to drain water from a glass container, thereby collecting the gas produced during anodizing. The gas volume is read from a scale on the glass container. However, due to the gravity of the water, the gas pressure in the collection device is difficult to control. Excessive water displacement leads to negative pressure within the device, resulting in an overestimation of the measured gas volume; insufficient water displacement leads to increased pressure within the device, resulting in an underestimation of the measured gas volume. Furthermore, measuring trace amounts of gaseous electrolytic products requires an airtightness test of the entire device to ensure accurate measurements.

[0005] Article 16797 of Volume 10, Issue 1, 2020, in *Scientific Reports* employed a combination of high-speed imaging and large-scale particle image velocimetry to monitor bubbles in the gaps of immersion laser jet electrolysis composite machining in real time. However, high-speed imaging technology faces challenges in the quantitative measurement of minute bubbles flowing at high speeds in non-immersion jet electrolysis machining. Furthermore, bubble overlap along the high-speed imaging direction leads to an underestimation of the measured gas volume.

[0006] In summary, existing devices and methods for quantitative detection of gas electrolysis products in laser jet electrolysis composite machining have certain limitations. Due to the high-speed flow of bubbles in jet electrolysis machining, their low content, and their concentration mainly between the anode and cathode, it is difficult to accurately measure them using existing methods. Therefore, based on existing technology, this invention proposes a device and method for quantitative detection of gas electrolysis products in laser jet electrolysis composite machining. Summary of the Invention

[0007] To address the limitations of existing technologies, this invention provides a device and method for quantitatively detecting gaseous electrolysis products in laser jet electrolysis composite processing, aiming to accurately measure the volume of gaseous electrolysis products during jet electrolysis processing. The device for quantitatively detecting gaseous electrolysis products using this invention can achieve a measurement accuracy of 0.01 ml; the gas pressure balancing unit effectively avoids measurement errors caused by gas compression or expansion within the device; and the manual pressurization unit enables airtightness monitoring, avoiding experimental errors caused by small amounts of gaseous electrolysis products.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] A quantitative detection device for gas electrolysis products in laser jet electrolysis composite processing includes a gas pressure balancing unit, a gas collection unit, and a manual pressurization unit. The gas collection unit is connected to the gas pressure balancing unit via a first gas delivery hose 4, and the gas collection unit is connected to the manual pressurization unit via a second gas delivery hose 11. Specifically:

[0010] The pressure balancing unit includes: a left scale tube 3 connected to the left side of a U-shaped tube 1 via a first rubber stopper 2, and the right side of the U-shaped tube 1 connected to a gas collection unit via a first air guide hose 4.

[0011] The gas collection unit includes: a first gas-conducting hose 4 leading into a gas-collecting bottle 10 containing electrolyte 21; an insulating boss 23 inside the gas-collecting bottle 10; a second rubber stopper 9 installed at the mouth of the gas-collecting bottle 10; the second rubber stopper 9 having multiple through holes, respectively leading to the first gas-conducting hose 4, a first syringe 5, a second syringe 6, an electrolyte circulation pipeline 25, anode and cathode wires connected to the electrolysis power supply 8, and the second gas-conducting hose 11; the upper surface of the insulating boss 23 is higher than the electrolyte 21 level, and its upper surface is used to support and fix the anode workpiece 22; the gas-collecting bottle 10 contains... The electrolyte circulation pipeline 25 has a U-shaped structure, with one end extending below the surface of the electrolyte 21 and a gear pump 7 installed in the middle. The other end is equipped with a cathode nozzle 24, which is located at a certain distance from the upper surface of the anode workpiece 22. The electrolyte 21 enters the electrolyte circulation pipeline 25 via the gear pump 7 and is sprayed out from the cathode nozzle 24 to reach the anode workpiece 22. The laser beam 12 passes through the gas collecting bottle 10 and acts together with the electrolyte 21 sprayed by the cathode nozzle 24 on the surface of the anode workpiece 22. The anode workpiece 22 and the cathode nozzle 24 are respectively connected to the positive and negative terminals of the electrolysis power supply 8.

[0012] The manual pressurization unit includes: a manual pressurization lever 16 that allows air to flow sequentially through a second air inlet 17, a third air inlet 20, a left-side gas collection unit, and a pressure balancing unit via an air guide pipe 19, thereby increasing the internal pressure of the entire device; the third air inlet 20 is connected to the second air inlet 19 via the air guide pipe 19, and the third air inlet 20 is connected to the inside of the gas collection bottle 10 via a second air guide hose 11. The manual pressurization lever 16 and the second air inlet 17 are connected via the air guide pipe 19, and a rotary micro-pressure regulator 18 is provided between them for micro-adjusting the internal pressure of the entire device. A pressure gauge 15 is sealed and connected to the second air inlet 17. The pressure gauge 15 is powered by a DC power supply 13 and connected to an oscilloscope 14 to display the gas pressure inside the device in real time.

[0013] Furthermore, the range of the first syringe 5 is greater than that of the second syringe 6, and the first syringe 5 and the second syringe 6 are used sequentially for aspiration; the first syringe 5 can collect most of the gas electrolysis products; the second syringe 6 with an accuracy of 0.01 ml is used for aspiration after the first syringe 5 to ensure measurement accuracy.

[0014] A method for quantitative detection of gaseous electrolysis products in laser jet electrolysis composite machining is disclosed. Based on the aforementioned detection device, the method mainly comprises two parts: device airtightness detection and quantitative measurement of gaseous electrolysis products. The measurement accuracy of this method can reach 0.01 ml, meeting the measurement requirements for gaseous electrolysis products in laser jet electrolysis machining. In the method, the laser beam 12 passes through the gas collecting bottle 10 and irradiates the surface of the anode workpiece 22. Furthermore, the determination of gaseous electrolysis products in laser jet electrolysis composite machining allows for accurate control of the laser power, avoiding problems such as low material removal rate due to insufficient laser power and low surface quality due to excessive laser power. This is achieved through the following steps:

[0015] The first step is to test the airtightness of the device;

[0016] Before quantitative detection of the gas electrolysis products, an airtightness test of the apparatus is required. All connecting pipes are sealed, and the DC power supply 13 is connected. After the oscilloscope 14 connected to the pressure gauge 15 stabilizes, air is introduced into the gas collecting bottle 10 via the manual pressure lever 16 and the rotating micro-pressure regulator 18, ensuring the liquid level in the graduated tube 3 of the pressure balance unit is greater than the theoretical gas electrolysis yield of 2.5 mL. It is crucial to ensure that the output signal of the pressure gauge 15 does not continuously decrease during the processing time; otherwise, all devices must be resealed. The theoretical gas electrolysis yield is calculated using Faraday's law.

[0017] The second step is the quantitative measurement of the gas electrolysis products;

[0018] After the airtightness test of the device is completed, a quantitative measurement experiment of the gas electrolysis products is carried out. The gear pump 7 is turned on so that the electrolyte 21 flows through the electrolyte circulation pipeline 25 and is sprayed out by the cathode nozzle 24. After the liquid level of the electrolyte 21 in the gas collecting bottle 10 is stable and the liquid level on both sides of the U-shaped tube 1 is consistent, the electrolysis power supply 8 is turned on. After the processing is completed, the electrolysis power supply 8 is turned off and cooled for 15 minutes. Then, the first syringe 5 and the second syringe 6 are used to draw the gas in the gas collecting bottle 10 in sequence. Finally, the liquid level on both sides of the U-shaped tube 1 is kept horizontal. The total volume drawn by the first syringe 5 and the second syringe 6 is recorded as the volume of the gas electrolysis products.

[0019] The beneficial effects of this invention are:

[0020] This invention employs a pressure balancing unit to avoid the phenomenon of underestimating the volume of gas electrolysis products due to increased gas pressure caused by gas generation during laser jet electrolysis. The gas collection unit uses a high-precision syringe to ensure the accuracy of gas electrolysis product measurement. The device integrates a manual pressurization unit to detect the overall airtightness of the apparatus, avoiding experimental errors. This device and method allow for precise control of laser power in laser jet electrolysis composite machining, avoiding problems such as low material removal rate due to insufficient laser power and reduced surface quality due to excessive laser power. Attached Figure Description

[0021] Figure 1 A schematic diagram of a quantitative detection device for gas electrolysis products in laser jet electrolysis composite processing;

[0022] Figure 2 Here is a flowchart of the airtightness testing process;

[0023] Figure 3 This is a diagram showing the results of the airtightness test.

[0024] Figure 4 Flowchart for measuring gas electrolysis products;

[0025] Figure 5 This is a graph showing the measurement results of gas electrolysis products;

[0026] In the diagram: 1 U-shaped tube, 2 first rubber stopper, 3 graduated tube, 4 first gas guide hose, 5 first syringe, 6 second syringe, 7 gear pump, 8 electrolysis power supply, 9 second rubber stopper, 10 gas collecting bottle, 11 second gas guide hose, 12 laser beam, 13 DC power supply, 14 oscilloscope, 15 pressure gauge, 16 manual pressure lever, 17 second gas guide interface, 18 rotary micro pressure regulator, 19 gas guide pipeline, 20 third gas guide interface, 21 electrolyte, 22 anode workpiece, 23 insulating boss, 24 cathode nozzle, 25 electrolyte circulation pipeline. Detailed Implementation

[0027] The specific embodiments of the present invention are described in detail below with reference to the technical solutions and accompanying drawings.

[0028] Figure 1 This is a schematic diagram of a quantitative detection device for gas electrolysis products in laser jet electrolysis composite processing. The gas pressure balance unit includes: a left scale tube 3 connected to a U-shaped tube 1 via a first rubber stopper 2, and a gas collection unit connected to the right side of the U-shaped tube 1 via a first gas guide hose 4.

[0029] The gas collection unit includes: a first gas-conducting hose 4 leading into a gas-collecting bottle 10 containing electrolyte 21; an insulating boss 23 with its upper surface higher than the electrolyte 21 surface for supporting and fixing the anode workpiece 22; a cathode nozzle 24 fixed to an electrolyte circulation pipeline 25 and vertically inserted into a second rubber stopper 9 2mm above the upper surface of the anode workpiece 22; the anode workpiece 22 and the cathode nozzle 24 being connected to the positive and negative terminals of the electrolytic power supply 8, respectively; the electrolyte 21 entering the electrolyte circulation pipeline 25 via a gear pump 7 and being ejected from the cathode nozzle 24; a second rubber stopper 9 installed at the mouth of the gas-collecting bottle 10; and multiple circular through holes above the second rubber stopper 9 leading to the first gas-conducting hose 4, the first syringe 5, the second syringe 6, the electrolyte circulation pipeline 25, the anode and cathode wires connected to the electrolytic power supply 8, and the second gas-conducting hose 11.

[0030] The manual pressurization unit includes: a manual pressurization rod 16 that allows air to flow through a second air inlet 17, an air inlet 120, a left-side gas collection unit, and a pressure balancing unit via an air inlet pipe 19, thereby increasing the internal air pressure of the entire device; a rotary micro-pressure regulator 18 is provided between the manual pressurization rod 16 and the second air inlet 20; a pressure gauge 15 is sealed and connected to the second air inlet 17; the pressure gauge 15 is powered by a DC power supply 13 and connected to an oscilloscope 14 to display the gas pressure inside the device in real time.

[0031] The method for quantitative detection of gas electrolysis products based on the above-mentioned device includes the following specific steps:

[0032] The first step is to set up the device;

[0033] Before the experiment, an insulating boss 23 was placed inside the gas collecting bottle 10 to achieve non-immersion electrolyte jet processing. Electrolyte 21 was introduced into the gas collecting bottle 10, with the liquid level of electrolyte 21 lower than the upper surface of the insulating boss 23. The anode workpiece 22 was fixed above the insulating boss 23 and connected to the positive terminal of the electrolytic power supply 8. The cathode nozzle 24 was connected to the negative terminal of the electrolytic power supply 8 and connected to one end of the electrolyte circulation pipeline 25. The electrolyte circulation pipeline 25 was connected to a gear pump 7 in the middle, and the other end was immersed below the liquid level of electrolyte 21 in the gas collecting bottle 10. The mouth of the gas collecting bottle 10 was sealed with a second rubber stopper 9 with multiple holes. The first syringe 5 and the second syringe 6 passed through the holes in the insulating rubber 27 and entered the gas collecting bottle 10. In addition, the gas collecting bottle 10 was connected to the right side of the U-shaped tube 1 through the first gas guiding hose 4, and the left side of the U-shaped tube 1 was connected to the graduated tube 3. Both sides of the U-shaped tube 1 were sealed with rubber stoppers 2. The gas collecting bottle 10 is connected to the gas inlet 120 via the second gas inlet hose 11. The gas inlet 120 is connected to the second gas inlet 17, the rotary micro-pressure regulator 18, and the manual pressure lever 16 in sequence via the gas inlet pipe 19. A pressure gauge 15 is connected to the second gas inlet 17 to monitor the gas pressure in the device in real time. The pressure gauge 15 is powered by a DC power supply 13 and its output signal is displayed and recorded by an oscilloscope 14. The second step is the quantitative measurement of the gas electrolysis products.

[0034] After the device is set up, air tightness monitoring is required. Air is introduced into the device through the manual pressure lever 16 and the rotary micro-pressure regulator 18, and the liquid level change in the graduated tube 3 is observed. When the liquid level in the graduated tube 3 is greater than the theoretical value of the volume of the gas electrolysis products processed by jet electrolysis, the pressure is stopped, the output signal of the pressure gauge 15 is recorded in real time, and it is observed whether there is a continuous signal drop in the output signal within the processing time range. If so, the device needs to be resealed. If the output signal remains stable at a certain value for a long period of time, it proves that the device has good air tightness, and the next step of quantitative measurement of gas electrolysis products can be carried out.

[0035] Figure 2 The flowchart for airtightness testing is as follows: Before quantitative testing of gas electrolysis products, an airtightness test of the device is required; seal all connecting pipes and connect DC power supply 13. After the reading of oscilloscope 14 connected to pressure gauge 15 stabilizes, air is introduced into the gas collecting bottle 10 through manual pressure lever 16 and rotating micro pressure regulator 18 so that the liquid level in scale tube 3 in the gas pressure balance unit is greater than the theoretical gas electrolysis output; ensure that the output signal of pressure gauge 15 does not drop continuously during the processing time, otherwise reseal all devices.

[0036] The third step is the quantitative measurement of gas electrolysis products;

[0037] After the airtightness test of the device is completed, the second gas delivery hose 11 is closed, and the quantitative measurement of the electrolysis products of the jet electrolysis gas is carried out. Turn on gear pump 7 to allow electrolyte 21 to flow through electrolyte circulation pipeline 25 and be ejected from cathode nozzle 24. Wait until the liquid level of electrolyte 21 in gas collecting bottle 10 is stable and the liquid levels on both sides of U-shaped tube 1 are consistent. Turn on electrolysis power supply 8 to make the electrolysis voltage 30V and use constant voltage processing mode. After the processing time of 180s is completed, turn off electrolysis power supply 8 first and then gear pump 7. After cooling for 15min, use first syringe 5 to draw gas electrolysis products in gas collecting bottle 10 and observe the liquid level in graduated tube 3 in real time. When the liquid level in graduated tube 3 is close to the liquid level on the right side of U-shaped tube 1, stop the first syringe 5 to draw and use second syringe 6 with an accuracy of 0.01mL to draw gas electrolysis products in gas collecting bottle 10. Finally, keep the liquid levels on both sides of U-shaped tube 1 horizontal and record the total volume drawn by first syringe 5 and second syringe 6, which is the volume of gas electrolysis products.

[0038] Figure 3 The image shows the results of the airtightness test. In the airtightness test, the output signal of the pressure gauge 15 did not show a continuous decrease during the processing time, indicating that the airtightness of the quantitative detection device for gas electrolysis products in the laser jet electrolysis composite processing is good.

[0039] Figure 4 The flowchart for measuring gas electrolysis products is as follows: After the airtightness test of the device is completed, the gas electrolysis products are quantitatively measured; the gear pump 7 is turned on so that the electrolyte 21 flows through the electrolyte circulation pipeline 25 and is sprayed out by the cathode nozzle 24. After the liquid level of the electrolyte 21 in the gas collecting bottle 10 is stable and the liquid level on both sides of the U-shaped tube 1 is consistent, the electrolysis power supply 8 is turned on. After the processing time ends, the electrolysis power supply 8 is turned off and cooled for 15 minutes. Then, the first syringe 5 and the second syringe 6 are used to sequentially draw the gas in the gas collecting bottle 10; finally, the liquid level on both sides of the U-shaped tube 1 is kept horizontal, and the total volume drawn by the first syringe 5 and the second syringe 6 is recorded as the volume of the gas electrolysis products.

[0040] Figure 5 The graph shows the measurement results of the gas electrolysis products. During the 180-second processing time, the amount of gas electrolysis products generated by the jet electrolysis gradually increased. After cooling for 15 minutes following the processing, the current density within 180 seconds was found to be 3.05 A / cm². 2 The volume of the gaseous electrolysis products produced was 2.51 mL.

[0041] The above-described embodiments are merely illustrative of the implementation methods of the present invention, but should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A quantitative detection device for gas electrolysis products in laser jet electrolysis composite processing, characterized in that, The aforementioned quantitative detection device for gas electrolysis products includes a pressure balancing unit, a gas collection unit, and a manual pressurization unit. The gas collection unit is connected to the pressure balancing unit via a first gas delivery hose (4), and the gas collection unit is connected to the manual pressurization unit via a second gas delivery hose (11). Specifically: The pressure balancing unit includes: a left scale tube (3) connected to the left side of a U-shaped tube (1) via a first rubber stopper (2), and a gas collection unit connected to the right side of the U-shaped tube (1) via a first air guide hose (4); The gas collection unit includes: a first gas-conducting hose (4) leading into a gas-collecting bottle (10) containing electrolyte (21); an insulating boss (23) inside the gas-collecting bottle (10); a second rubber stopper (9) installed at the mouth of the gas-collecting bottle (10); and multiple through holes on the second rubber stopper (9) leading to the first gas-conducting hose (4), a first syringe (5), a second syringe (6), an electrolyte circulation pipeline (25), a cathode and anode wires connected to the electrolysis power supply (8), and a second gas-conducting hose (11), respectively; the upper surface of the insulating boss (23) is higher than the electrolyte (21) level, used to support and fix the anode workpiece (22); and an electric... The electrolyte circulation pipeline (25) has a U-shaped structure. One end of the pipeline extends below the surface of the electrolyte (21), and a gear pump (7) is installed in the middle. The other end is equipped with a cathode nozzle (24). The cathode nozzle (24) is located above the anode workpiece (22). The electrolyte (21) enters the electrolyte circulation pipeline (25) through the gear pump (7) and is sprayed out by the cathode nozzle (24) to reach the anode workpiece (22). The laser beam (12) passes through the gas collecting bottle (10) and acts together with the electrolyte (21) sprayed by the cathode nozzle (24) on the surface of the anode workpiece (22). The anode workpiece (22) and the cathode nozzle (24) are respectively connected to the positive and negative terminals of the electrolysis power supply (8). The manual pressurization unit includes: a manual pressurization rod (16) that allows air to flow sequentially through the second air inlet (17), the third air inlet (20), the left gas collection unit, and the pressure balancing unit via an air inlet pipe (19), thereby increasing the internal air pressure; the third air inlet (20) is connected to the third air inlet (20) via the air inlet pipe (19), and the third air inlet (20) is connected to the inside of the gas collection bottle (10) via the second air inlet hose (11).

2. The quantitative detection device for gas electrolysis products in laser jet electrolysis composite processing according to claim 1, characterized in that, In the manual pressurization unit, the manual pressurization rod (16) and the second air inlet (17) are connected through the air inlet pipe (19), and a rotary micro pressure regulator (18) is provided between them. The rotary micro pressure regulator (18) is used to adjust the air pressure in the whole device in a micro way. A pressure gauge (15) is sealed and connected to the second gas inlet (17). The pressure gauge (15) is powered by a DC power supply (13) and connected to an oscilloscope (14) to display the gas pressure in the device in real time.

3. The quantitative detection device for gas electrolysis products in laser jet electrolysis composite processing according to claim 1, characterized in that, The first syringe (5) has a larger range than the second syringe (6), and the first syringe (5) and the second syringe (6) are used sequentially for aspiration; the first syringe (5) is used to collect gas electrolysis products; the second syringe (6) with an accuracy of 0.01 ml is used after the first syringe (5) for aspiration to ensure measurement accuracy.

4. A method for quantitative detection of gas electrolysis products in laser jet electrolysis composite processing, characterized in that, Based on the detection device described in any one of claims 1-3, the method mainly includes two parts: device airtightness detection and quantitative measurement of gas electrolysis products, with a measurement accuracy of 0.01 ml; it includes the following steps: The first step is to test the airtightness of the device; Before quantitative detection of gas electrolysis products, the airtightness of the device is tested; all connecting pipes are sealed and DC power supply (13) is turned on. After the reading of the oscilloscope (14) connected to the pressure gauge (15) stabilizes, air is introduced into the gas collecting bottle (10) through the manual pressure lever (16) and the rotating micro pressure regulator (18) so that the liquid level in the scale tube (3) in the gas pressure balance unit is greater than the theoretical gas electrolysis output; ensure that the output signal of the pressure gauge (15) does not drop continuously during the processing time, otherwise reseal all devices; the theoretical gas electrolysis output is calculated by Faraday's law; The second step is the quantitative measurement of the gas electrolysis products; After the airtightness test of the device is completed, a quantitative measurement experiment of the gas electrolysis products is carried out; the gear pump (7) is turned on so that the electrolyte (21) flows through the electrolyte circulation pipeline (25) and is sprayed out by the cathode nozzle (24). When the liquid level of the electrolyte (21) in the gas collecting bottle (10) is stable and the liquid level on both sides of the U-shaped tube (1) is consistent, the electrolysis power supply (8) is turned on. After the processing is completed, the electrolysis power supply (8) is turned off and cooled. The first syringe (5) and the second syringe (6) are used to draw the gas in the gas collecting bottle (10) in turn. Finally, the liquid level on both sides of the U-shaped tube (1) is kept horizontal. The total volume drawn by the first syringe (5) and the second syringe (6) is recorded as the volume of the gas electrolysis products.

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