An experimental device for simulating the flow and dissolution process of gas-liquid mixture

Abstract

The present invention relates to an experimental device for simulating the flow and dissolution and precipitation process of a gas-liquid mixture, belonging to the field of simulation experimental devices. The device comprises a pressure-stabilizing water tank, a loop pipeline, an extraction component, a loop circulation component and a water tank. The pressure-stabilizing water tank is connected to the extraction component via a loop pipeline, the extraction component and the loop circulation component are connected via a loop pipeline, the water tank is arranged between the extraction component and the loop circulation component, and the water tank is connected to the loop pipeline. The experimental device for simulating the flow and dissolution and precipitation process of a gas-liquid mixture also comprises an acrylic transparent tube A, an orifice plate, an acrylic transparent tube B, an acrylic transparent tube C, an air compressor and an acrylic transparent tube D. The acrylic transparent tube A is fixed to and connected to the extraction component via the loop pipeline, the two ends of the acrylic transparent tube B are detachably connected to the acrylic transparent tube A and the acrylic transparent tube C respectively, and the acrylic transparent tube D and the acrylic transparent tube B are interchangeable.

Description

Technical Field

[0001] The invention relates to an experimental device for simulating the flow and dissolution and precipitation process of a gas-liquid mixture, and belongs to the field of simulation experimental devices. Background Art

[0002] Implementing on-orbit propellant replenishment can maximize satellite lifespan, improve satellite on-orbit maneuverability, and fully realize the satellite's value. In the on-orbit refueling system, propellant and pressurized gas coexist in the tank, and the propellant is saturated with dissolved gas. When the on-orbit refueling system is operating, due to the slender pipelines and small valve diameters, the downstream pressure decreases, causing helium solubility to decrease, resulting in helium precipitation and bubbles. When the local pressure increases, the gas solubility increases, and some of the bubbles dissolve back into the propellant. The mechanism by which gas precipitation and dissolution affect the operational stability of the on-orbit refueling system is unclear, making it difficult to accurately calculate the propellant replenishment amount. This leads to large errors in satellite life prediction and has become a bottleneck restricting the advancement of spacecraft technology. This experimental device can study dynamic gas-liquid mass transfer, including both gas dissolution in liquid and gas precipitation from liquid. A gas-liquid mixture experiences a dramatic pressure drop when passing through a small-diameter orifice plate between pipes. The resulting gas release exacerbates flow instability. As pressure recovers, the released gas redissolves in the liquid, resulting in a dynamic equilibrium between the gas and liquid. In this discussion of the dissolution phenomenon, by pre-treating the aqueous solution to an unsaturated state, the gas continuously dissolves in the liquid with continuous gas injection, increasing the dissolved gas concentration. This allows for analysis of the dynamic gas-liquid behavior and dissolution-desorption phenomena under varying gas-liquid conditions. By analyzing the dynamic gas-liquid behavior and the impact of flow dissolution-desorption, a universal dynamic gas-liquid dissolution-desorption equation is developed. This is crucial for controlling the gas-liquid behavior of the on-orbit refueling system, enabling accurate prediction of on-orbit propellant and boost gas injection rates for satellites and improving the accuracy of satellite lifespan predictions. Therefore, experimental measurements should be conducted at various flow rates, gas injection rates, and initial liquid concentrations to allow for sufficient comparison of experimental data and identify optimal control conditions. The existing experimental platforms for induced gas precipitation and dissolution are independent of each other, have simple structures, and are based on static tests, resulting in a lack of experimental observation and theoretical basis for unstable gas-liquid dynamic dissolution and flow. Summary of the Invention

[0003] The present invention aims to solve the problem that it is impossible to take into account the simulation of the flow of gas-liquid mixture and the dissolution and precipitation process and data collection, and measure the dynamic dissolved oxygen concentration of the gas-liquid mixture in the dissolution experiment and precipitation experiment, and then propose an experimental device for simulating the flow of gas-liquid mixture and the dissolution and precipitation process.

[0004] The technical solution adopted by the present invention to solve the above problems is: the present invention includes a pressure-stabilizing water tank, a loop pipe, an extraction component, a loop circulation component and a water tank, the pressure-stabilizing water tank is connected to the extraction component through a loop pipe, the extraction component and the loop circulation component are connected through a loop pipe, the water tank is arranged between the extraction component and the loop circulation component, and the water tank is connected to the loop pipe, and is characterized in that it also includes an acrylic transparent tube A, an orifice plate, an acrylic transparent tube B, an acrylic transparent tube C, an air compressor and an acrylic transparent tube D, the acrylic transparent tube A is fixed to and connected to the extraction component through the loop pipe, the two ends of the acrylic transparent tube B are detachably connected to the acrylic transparent tube A and the acrylic transparent tube C respectively, the acrylic transparent tube D and the acrylic transparent tube B are interchangeable, the orifice plates are provided with two, the two orifice plates are respectively arranged on the two ends of the acrylic transparent tube B, and each orifice plate is fixed to and connected to the acrylic transparent tube B, and the air compressor is connected to the acrylic transparent tube A through the loop pipe.

[0005] Furthermore, the extraction component includes a switch valve A, an electromagnetic flowmeter, a stainless steel pump A and a frequency-modulation motor A. The inlet of the stainless steel pump A is connected to the pressure-stabilizing water tank through a loop pipe. The stainless steel pump A is arranged on one side of the pressure-stabilizing water tank. The switch valve A is arranged between the pressure-stabilizing water tank and the stainless steel pump A near the pressure-stabilizing water tank, and the switch valve A is fixed and connected to the loop pipe. The electromagnetic flowmeter is arranged between the switch valve A and the stainless steel pump A, and the electromagnetic flowmeter is fixed and connected to the loop pipe. The frequency-modulation motor A is connected to the stainless steel pump A, and the output shaft of the frequency-modulation motor A is connected to the stainless steel pump A. The outlet of the stainless steel pump A is connected to the acrylic transparent tube A through a loop pipe.

[0006] Furthermore, it also includes a dissolved oxygen detection component, a dissolved oxygen sensor A, a pressure sensor A, an air inlet, a pressure sensor B, a pressure sensor C and a dissolved oxygen sensor B. The dissolved oxygen component is arranged between the stainless steel pump A and the acrylic transparent tube A, and the dissolved oxygen component is connected to the loop pipeline. The dissolved oxygen sensor A is fixed and connected to the acrylic transparent tube A, and the dissolved oxygen sensor A is close to the inlet of the acrylic transparent tube A. The pressure sensor A is fixed and connected to the acrylic transparent tube A. The air inlet is arranged on the loop pipeline between the air compressor and the acrylic transparent tube A, and the air inlet is close to the acrylic transparent tube A. The pressure sensor B is fixed and connected to the acrylic transparent tube A, and the pressure sensor B is close to the outlet of the acrylic transparent tube A. The pressure sensor C is fixed and connected to the acrylic transparent tube C, and the pressure sensor C is close to the outlet of the acrylic transparent tube C. The dissolved oxygen sensor B is fixed and connected to the acrylic transparent tube C, and the dissolved oxygen sensor B is close to the outlet of the acrylic transparent tube C.

[0007] Furthermore, the dissolved oxygen detection assembly includes a glass measuring cylinder, a loop hose, and a switch valve B. The glass measuring cylinder is positioned between a stainless steel pump A and an acrylic transparent tube A. The loop hose is inserted into the glass measuring cylinder, and the loop hose is connected to a switch valve B. The switch valve B is fixed and connected to the loop pipe. Furthermore, the loop circulation assembly includes a stainless steel pump B, a frequency-modulated motor B, a switch valve C, and an oxygen removal assembly. The stainless steel pump B is connected to the water tank via a loop pipe, and the stainless steel pump B is connected to the pressure-stabilizing water tank via a loop pipe. The output shaft of the frequency-modulated motor B is connected to the stainless steel pump B. The switch valve C is fixed and connected to the loop pipe, and the inlet of the switch valve C is connected to the outlet of the stainless steel pump B.

[0008] Furthermore, the loop circulation component includes a stainless steel pump B, a frequency modulation motor B, a switch valve C, a one-way valve B and an oxygen removal component. The stainless steel pump B is connected to the water tank through a loop pipe, the stainless steel pump B is connected to the pressure-stabilizing water tank through a loop pipe, the output shaft of the frequency modulation motor B is connected to the stainless steel pump B, the switch valve C is fixed and connected to the loop pipe, and the inlet of the switch valve C is connected to the outlet of the stainless steel pump B, the one-way valve B is fixed and connected to the loop pipe, and the one-way valve B is close to the pressure-stabilizing water tank.

[0009] Furthermore, the oxygen removal component includes a nitrogen switch valve, a pressure relief valve C, a pressure reducing valve A and a nitrogen cylinder. The nitrogen cylinder is connected to the water tank through a loop pipe. The nitrogen switch valve is arranged between the water tank and the nitrogen cylinder near the water tank, and the nitrogen switch valve is fixed and connected to the loop pipe. The pressure reducing valve A is arranged between the water tank and the nitrogen cylinder near the nitrogen cylinder, and the pressure reducing valve A is fixed and connected to the loop pipe. The pressure relief valve C is arranged between the nitrogen switch valve and the pressure reducing valve A, and the pressure relief valve C is fixed and connected to the loop pipe.

[0010] Furthermore, it also includes an air bottle, a pressure reducing valve, a pressure relief valve D, a switch valve D, a gas flow meter A, a one-way valve A and a transport pipeline. The air bottle is connected to the pressure-stabilizing water tank through the transport pipeline. The pressure reducing valve is fixed and connected to the transport pipeline, and the pressure reducing valve is close to the air bottle. The pressure relief valve D is fixed and connected to the transport pipeline, and the inlet of the pressure relief valve D is connected to the outlet of the pressure reducing valve. The switch valve D is fixed and connected to the transport pipeline, and the inlet of the switch valve D is connected to the outlet of the pressure relief valve D. The gas flow meter A is fixed and connected to the transport pipeline, and the gas flow meter A is close to the pressure-stabilizing water tank. The one-way valve A is arranged between the pressure-stabilizing water tank and the gas flow meter A, and the one-way valve A is fixed and connected to the transport pipeline.

[0011] Furthermore, it also includes a pressure gauge, which is fixed on the pressure-stabilizing water tank.

[0012] Furthermore, it also includes an air switch valve, a gas flow meter B and a one-way valve C. The air switch valve is arranged between the acrylic transparent tube A and the air compressor, and the air switch valve is fixed and connected to the loop pipeline. The gas flow meter B is fixed and connected to the loop pipeline, and one end of the gas flow meter B is connected to the outlet of the air switch valve. The one-way valve C is arranged between the air inlet and the gas flow meter B, and the one-way valve C is fixed and connected to the loop pipeline.

[0013] Furthermore, it also includes an air release valve, which is fixed to and connected to the pressure-stabilizing water tank.

[0014] The beneficial effects of the present invention are as follows: the flow of gas-liquid mixture and the dissolution and precipitation process and the data acquisition system simulate the dynamic dissolved oxygen concentration of the gas-liquid mixture through the dissolution experiment and the precipitation experiment, thereby realizing the simulation of the gas-liquid distribution state of the on-orbit filling system. Among them, the precipitation experiment induces the precipitation of gas by creating a local pressure drop to explore the two-way gas-liquid mass transfer research, and the dissolution experiment injects gas into the aqueous solution to study the one-way gas-to-liquid dissolution and precipitation. Therefore, the dynamic distribution of gas and liquid and the location of gas precipitation can be simulated in the transparent pipeline, and the flow in the experimental section can be adjusted by the centrifugal pump in the pipeline loop, and the pressure regulating tank can adjust the pressure in the experimental system to adjust the initial dissolved concentration, finally realizing the observation of gas precipitation and dissolved gas-liquid distribution state and the monitoring of dissolved oxygen mass transfer. By changing different inlet flow rates, inlet pressures, gas volume fractions, and initial dissolved oxygen concentrations, the flow and mass transfer phenomena of the gas-liquid mixture in the on-orbit filling system are simulated, and the influence of gas dissolution and precipitation behavior on dissolved oxygen concentration is studied, which helps to understand the mass transfer phenomena occurring in the flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 Schematic diagram of a transparent section device for gas evolution phenomenon experiment of the present invention;

[0017] Figure 3 It is a schematic diagram of the transparent section device for the gas dissolution phenomenon experiment of the present invention. DETAILED DESCRIPTION

[0018] Specific implementation method 1: Combination Figures 1 to 3This embodiment describes the present invention. This embodiment includes a pressure-stabilizing water tank 1, a loop pipe 2, an extraction component, a loop circulation component, and a water tank 20. The pressure-stabilizing water tank 1 is connected to the extraction component via the loop pipe 2, and the extraction component and the loop circulation component are connected via the loop pipe 2. The water tank 20 is arranged between the extraction component and the loop circulation component, and the water tank 20 is connected to the loop pipe 2. It also includes an acrylic transparent tube A10, an orifice plate 15, an acrylic transparent tube B16, an acrylic transparent tube C17, an air compressor 38, and an acrylic transparent tube D42. The acrylic transparent tube A10 is fixed to the extraction component through the loop pipe 2 and is connected to the extraction component. Both ends of the acrylic transparent tube B16 The acrylic transparent tubes A10 and C17 are removably fixed to each other using flanges. The acrylic transparent tubes B16 and D42 are interchangeable. Depending on the desired test, either the acrylic transparent tube B16 or the acrylic transparent tube D42 is connected between the acrylic transparent tubes A10 and C17. When conducting a gas evolution experiment, the acrylic transparent tube B16 is connected between the acrylic transparent tubes A10 and C17. When conducting a gas dissolution experiment, the acrylic transparent tube D42 is connected between the acrylic transparent tubes A10 and C17. Two orifice plates 15 are provided, one at each end of the acrylic transparent tube B16, and each orifice plate 15 is fixed to and communicates with the acrylic transparent tube B16. An air compressor 38 is connected to the acrylic transparent tube A10 via a loop pipe 2. The extraction component extracts the water stored in the pressure-stabilizing water tank 1 through the loop pipe 2 and transports it to the acrylic transparent tube A10. The acrylic transparent tube A10, acrylic transparent tube B16, acrylic transparent tube C17 and acrylic transparent tube D42 are fixed and connected by bolts. The flowing water passes through the acrylic transparent tube A10, acrylic transparent tube B16 or acrylic transparent tube D42, acrylic transparent tube C17 and flows into the water tank 20. The loop circulation component is used to inject the water in the water tank 20 into the pressure-stabilizing water tank 1 through the loop pipe 2 to form a closed loop. At the same time, the air compressor 38 is used to inject air into the connected acrylic transparent tube A10. The gas precipitation data is collected by observing the flow field information near the two orifice plates 15. The acrylic transparent tube B16 and the acrylic transparent tube D42 are replaced with each other to complete the precipitation and dissolution experiments respectively. By injecting air and measuring the dissolved oxygen concentration of oxygen aqueous solutions with different saturations under different pressure differential losses, the flow state of gas-liquid dissolution and precipitation during on-orbit refueling is simulated.The measurement system also includes a dissolved oxygen detection component, a dissolved oxygen sensor A11, a pressure sensor A12, an air inlet 13, a pressure sensor B14, a pressure sensor C18 and a dissolved oxygen sensor B19. The dissolved oxygen component is arranged between the stainless steel pump A5 and the acrylic transparent tube A10, and the dissolved oxygen component is connected to the loop pipe 2. The dissolved oxygen sensor A11 is fixed and connected to the acrylic transparent tube A10, and the dissolved oxygen sensor A11 is close to the inlet of the acrylic transparent tube A10. The pressure sensor A12 is fixed and connected to the acrylic transparent tube A10, and the inlet of the pressure sensor A12 is connected to the inlet of the dissolved oxygen sensor A11. The outlet is connected, the air inlet 13 is set on the loop pipe 2 between the air compressor 38 and the acrylic transparent tube A10, and the air inlet 13 is close to the acrylic transparent tube A10, the pressure sensor B14 is fixed and connected to the acrylic transparent tube A10, and the pressure sensor B14 is close to the outlet of the acrylic transparent tube A10, the pressure sensor C18 is fixed and connected to the acrylic transparent tube C17, and the pressure sensor C18 is close to the inlet of the acrylic transparent tube C17, and the dissolved oxygen sensor B19 is fixed and connected to the acrylic transparent tube C17, and the dissolved oxygen sensor B19 is close to the outlet of the acrylic transparent tube C17. Air extracted by the air compressor 38 is injected into the acrylic transparent tube A10 through the air inlet 13. The dissolved oxygen sensor A11 and the pressure sensor A12 are used to measure the parameters of the liquid injected into the acrylic transparent tube A10. The pressure sensor B14 is used to measure the gas-liquid mixture of the air injected into the acrylic transparent tube A10. The pressure sensor C18 and the dissolved oxygen sensor B19 are used to measure the parameters of the gas-liquid mixture flowing into the acrylic transparent tube C17.

[0019] Specific implementation method 2: Combination Figures 1 to 3To illustrate this embodiment, the extraction component includes a switch valve A3, an electromagnetic flowmeter 4, a stainless steel pump A5 and a frequency-modulated motor 6A. The inlet of the stainless steel pump A5 is connected to the pressure-stabilizing water tank 1 through a loop pipe 2. The stainless steel pump A5 is arranged on one side of the pressure-stabilizing water tank 1. The switch valve A3 is arranged between the pressure-stabilizing water tank 1 and the stainless steel pump A5 near the pressure-stabilizing water tank 1, and the switch valve A3 is fixed and connected to the loop pipe 2. The electromagnetic flowmeter 4 is arranged between the switch valve A3 and the stainless steel pump A5, and the electromagnetic flowmeter 4 is fixed and connected to the loop pipe 2. The frequency-modulated motor 6A is connected to the stainless steel pump A5, and the output shaft of the frequency-modulated motor 6A is connected to the stainless steel pump A5. The outlet of the stainless steel pump A5 is connected to the acrylic transparent tube A10 through the loop pipe 2. Frequency-modulated motor 6A drives stainless steel pump A5 to rotate, extracting liquid from pressure-stabilizing water tank 1 and injecting it into transparent acrylic tube A10. Switching valve A3 seals pressure-stabilizing water tank 1, controlling whether liquid flows through loop pipe 2 into stainless steel pump A5. Electromagnetic flowmeter 4 measures the liquid flowing out of pressure-stabilizing water tank 1. Changing the speed of frequency-modulated motor 6A changes the speed of stainless steel pump A5, thereby varying the pressure within loop pipe 2.

[0020] Other components and connection methods are the same as those in the first embodiment.

[0021] Specific implementation method three: Combination Figures 1 to 3 To illustrate this embodiment, the dissolved oxygen detection assembly includes a glass measuring cylinder 7, a loop hose 8, and an on-off valve B9. The glass measuring cylinder 7 is positioned between a stainless steel pump A5 and a transparent acrylic tube A10. The loop hose 8 is inserted into the glass measuring cylinder 7, and the on-off valve B9 is connected to the loop hose 8. The on-off valve B9 is fixed and connected to the loop pipe 2. An aqueous solution containing an appropriate oxygen concentration is prepared in a pressure-stabilizing water tank 1. The dissolved oxygen concentration flowing into the inlet of the transparent acrylic tube A10 is measured by the glass measuring cylinder 7. The on-off valve B9 controls the flow of liquid through the loop hose 8 into the glass measuring cylinder 7 for detection.

[0022] Other components and connection methods are the same as those in the second embodiment.

[0023] Specific implementation method four: Combination Figures 1 to 3To illustrate this embodiment, the loop circulation assembly includes a stainless steel pump B25, a frequency-modulated motor B26, a switch valve C27, and an oxygen scavenging assembly. The stainless steel pump B25 is connected to the water tank 20 via a loop pipe 2, which in turn is connected to the pressure-stabilizing water tank 1 via a loop pipe 2. The output shaft of the frequency-modulated motor B26 is connected to the stainless steel pump B25. The switch valve C27 is fixed to and connected to the loop pipe 2, with the inlet of the switch valve C27 connected to the outlet of the stainless steel pump B25. The frequency-modulated motor B26 drives the connected stainless steel pump B25 to rotate, pumping liquid from the water tank 20 into the pressure-stabilizing water tank 1 via the loop pipe 2. The switch valve C27 controls whether liquid flows through the loop pipe 2 into the pressure-stabilizing water tank 1. The oxygen scavenging assembly removes dissolved oxygen from the aqueous solution in the water tank 20.

[0024] Other components and connection methods are the same as those in the first embodiment.

[0025] Specific implementation method five: Combination Figures 1 to 3 To illustrate this embodiment, the oxygen scavenging assembly includes a nitrogen on-off valve 21, a pressure relief valve C22, a pressure reducing valve A23, and a nitrogen cylinder 24. The nitrogen cylinder 24 is connected to the water tank 20 via a loop pipe 2. The nitrogen on-off valve 21 is positioned between the water tank 20 and the nitrogen cylinder 24, near the water tank 20, and is fixed to and connected to the loop pipe 2. The pressure reducing valve A23 is positioned between the water tank 20 and the nitrogen cylinder 24, near the nitrogen cylinder 24, and is fixed to and connected to the loop pipe 2. The pressure relief valve C22 is positioned between the nitrogen on-off valve 21 and the pressure reducing valve A23, and is fixed to and connected to the loop pipe 2. The nitrogen in the nitrogen cylinder 24 flows stably and safely into the water tank 20 through the cooperation of the pressure reducing valve A23 and the pressure relief valve C22. Whether the nitrogen flows into the water tank 20 is controlled by the nitrogen on-off valve 21.

[0026] Other components and connection methods are the same as those in the fourth embodiment.

[0027] Specific implementation method six: combination Figures 1 to 3This embodiment further includes an air cylinder 28, a pressure reducing valve 29, a pressure relief valve D30, a switch valve D31, a gas flow meter A32 and a transport pipe 34. The air cylinder 28 is connected to the pressure stabilizing water tank 1 through the transport pipe 34. The pressure reducing valve 29 is fixed and connected to the transport pipe 34, and the pressure reducing valve 29 is close to the air cylinder 28. The pressure relief valve D30 is fixed and connected to the transport pipe 34, and the inlet of the pressure relief valve D30 is connected to the outlet of the pressure reducing valve 29. The switch valve D31 is fixed and connected to the transport pipe 34, and the inlet of the switch valve D31 is connected to the outlet of the pressure relief valve D30. The gas flow meter A32 is fixed and connected to the transport pipe 34, and the gas flow meter A32 is close to the pressure stabilizing water tank 1. The one-way valve A33 is arranged between the pressure stabilizing water tank 1 and the gas flow meter A32, and the one-way valve A33 is fixed and connected to the transport pipe 34. The air in the air bottle 28 is stably and safely injected into the pressure-stabilizing water tank 1 through the transport pipe 34 through the cooperation of the pressure reducing valve 29 and the pressure relief valve D30, and the pressure in the experimental system is gradually adjusted. The flow of air is detected by the gas flow meter A32.

[0028] Other components and connection methods are the same as those in the first embodiment.

[0029] Specific implementation method seven: combination Figures 1 to 3 This embodiment further includes a pressure gauge 36 , which is fixed to the pressure-stabilizing water tank 1 . The pressure gauge 36 is used to observe the pressure in the pressure-stabilizing water tank 1 .

[0030] Other components and connection methods are the same as those in the first embodiment.

[0031] Specific implementation method eight: combination Figures 1 to 3 This embodiment also includes an air on / off valve 39 and a gas flow meter B40. The air on / off valve 39 is positioned between the acrylic transparent tube A10 and the air compressor 38 and is fixed to and connected to the loop pipe 2. The gas flow meter B40 is also fixed to and connected to the loop pipe 2, with one end of the gas flow meter B40 connected to the outlet of the air on / off valve 39 and a one-way valve C41. The air on / off valve 39 controls whether the air compressed by the air compressor 38 flows into the loop pipe 2, and the gas flow meter B40 measures the gas flowing into the acrylic transparent tube A10.

[0032] Other components and connection methods are the same as those in the first embodiment.

[0033] Specific implementation method nine: combination Figures 1 to 3 This embodiment further includes an air release valve 37 , which is fixed to and connected to the pressure-stabilizing water tank 1 . The air release valve 37 keeps the pressure in the pressure-stabilizing water tank 1 stable.

[0034] Example

[0035] Once the required flow conditions and pressure within the surge tank are determined, the rate of flow and mass transfer can be controlled by the initial dissolved oxygen concentration and the gas injection rate. While maintaining flow, the direction of flow and mass transfer can also be controlled by adjusting the pressure within the experimental platform, enabling data collection and exploration under these experimental conditions. To start the experimental setup for the gas-liquid mixture flow and dissolution / desorption process, adjust the frequency-controlled motor 6A and frequency-controlled motor B26 to control the rotation of the connected stainless steel pumps A5 and B25, respectively, to gradually stabilize the experimental platform. Simultaneously, observe the pressure gauge 36 to prevent high pressure or pressure pulsation within the experimental system, which could pose a risk. During this process, carefully monitor acrylic transparent tubes A10, B16, C17, or D42 for leaks. Once the experimental platform is operating relatively smoothly, gradually adjust the pressure within the experimental system using air bottle 28. Observe the bubble behavior caused by gas precipitation within the transparent dissolution / desorption experimental pipelines. If the gas separation is not ideal, the frequency modulation motor 6A and the frequency modulation motor B26 can be further adjusted to control the flow rate to adjust the gas separation phenomenon. If the gas separation phenomenon is ideal, the flow field information near the orifice plate 15 can be collected by a stroboscopic camera.

[0036] The principle of gas evolution in the on-orbit refueling system simulation is as follows: The flow area in orifice plate 15 is affected by the sudden contraction of the flow channel, causing the flow velocity to increase rapidly while the pressure of the gas-liquid mixture to decrease rapidly. Under the influence of this localized rapid pressure drop, when the pressure falls below the local gas separation pressure, gas evolution occurs downstream of orifice plate 15. Furthermore, as the oxygen saturation of the solution increases during pressure recovery, some of the evolved gas redissolves in the liquid, resulting in a bidirectional gas-liquid mass transfer process involving both evolution and dissolution.

[0037] To simulate the principle of gas dissolution in the on-orbit refueling system, an aqueous solution of appropriate oxygen concentration is prepared in pressure-stabilizing water tank 1. The dissolved oxygen concentration at the inlet of acrylic transparent tube A10 is measured using glass graduated cylinder 6. The throttled acrylic transparent tube D42 enhances the dissolution rate, making it easier to observe the dynamic changes in dissolution. Dissolved oxygen sensor B19 measures the incremental dissolved oxygen concentration after passing through acrylic transparent tubes A10, B16, and C17, simulating the injection of high-pressure gas into the on-orbit refueling system and the continuous dissolution of gas into the solution.

[0038] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the present profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An experimental device for simulating the flow and dissolution and precipitation process of a gas-liquid mixture, comprising a pressure-stabilizing water tank (1), a loop pipe (2), an extraction component, a loop circulation component, and a water tank (20), wherein the pressure-stabilizing water tank (1) is connected to the extraction component via the loop pipe (2), the extraction component and the loop circulation component are connected via the loop pipe (2), the water tank (20) is arranged between the extraction component and the loop circulation component, and the water tank (20) is in communication with the loop pipe (2), and is characterized in that: The experimental device for simulating the flow and dissolution and precipitation process of a gas-liquid mixture further comprises an acrylic transparent tube A (10), an orifice plate (15), an acrylic transparent tube B (16), an acrylic transparent tube C (17), an air compressor (38) and an acrylic transparent tube D (42), wherein the acrylic transparent tube A (10) is fixed and connected to the extraction component through a loop pipe (2), the two ends of the acrylic transparent tube B (16) are detachably connected to the acrylic transparent tube A (10) and the acrylic transparent tube C (17), and the acrylic transparent tube D (42) is interchangeable with the acrylic transparent tube B (16), two orifice plates (15) are provided, and the two orifice plates (15) are respectively provided on the two ends of the acrylic transparent tube B (16), and each orifice plate (15) is fixed and connected to the acrylic transparent tube B (16), and the air compressor (38) is connected to the acrylic transparent tube A (10) through the loop pipe (2); The loop circulation component includes a stainless steel pump B (25), a frequency modulation motor B (26), a switch valve C (27), a one-way valve B (35) and an oxygen removal component, wherein the stainless steel pump B (25) is connected to the water tank (20) through a loop pipe (2), the stainless steel pump B (25) is connected to the pressure-stabilizing water tank (1) through a loop pipe (2), the output shaft of the frequency modulation motor B (26) is connected to the stainless steel pump B (25), the switch valve C (27) is fixed and connected to the loop pipe (2), and the inlet of the switch valve C (27) is connected to the outlet of the stainless steel pump B (25), the one-way valve B (35) is fixed and connected to the loop pipe (2), and the one-way valve B (35) is close to the pressure-stabilizing water tank (1).

2. The experimental device for simulating the flow and dissolution-precipitation process of a gas-liquid mixture according to claim 1, characterized in that: The extraction component includes a switch valve A (3), an electromagnetic flowmeter (4), a stainless steel pump A (5) and a frequency modulation motor A (6), the inlet of the stainless steel pump A (5) is connected to the pressure-stabilizing water tank (1) through a loop pipe (2), the stainless steel pump A (5) is arranged on one side of the pressure-stabilizing water tank (1), the switch valve A (3) is arranged between the pressure-stabilizing water tank (1) and the stainless steel pump A (5) near the pressure-stabilizing water tank (1), and the switch valve A (3) is fixed and connected to the loop pipe (2), the electromagnetic flowmeter (4) is arranged between the switch valve A (3) and the stainless steel pump A (5), and the electromagnetic flowmeter (4) is fixed and connected to the loop pipe (2), the frequency modulation motor A (6) is connected to the stainless steel pump A (5), and the output shaft of the frequency modulation motor A (6) is connected to the stainless steel pump A (5), and the outlet of the stainless steel pump A (5) is connected to the acrylic transparent tube A (10) through the loop pipe (2).

3. The experimental device for simulating the flow and dissolution-precipitation process of a gas-liquid mixture according to claim 1, characterized in that: The invention also includes a dissolved oxygen detection component, a dissolved oxygen sensor A (11), a pressure sensor A (12), an air inlet (13), a pressure sensor B (14), a pressure sensor C (18) and a dissolved oxygen sensor B (19). The dissolved oxygen component is arranged between the stainless steel pump A (5) and the acrylic transparent tube A (10), and the dissolved oxygen component is connected to the loop pipe (2). The dissolved oxygen sensor A (11) is fixed and connected to the acrylic transparent tube A (10), and the dissolved oxygen sensor A (11) is close to the inlet of the acrylic transparent tube A (10). The pressure sensor A (12) is fixed and connected to the acrylic transparent tube A (10). The air inlet (13) is arranged on the air compressor. The air inlet (13) is located on the loop pipe (2) between the machine (38) and the acrylic transparent tube A (10), and the air inlet (13) is close to the acrylic transparent tube A (10). The pressure sensor B (14) is fixed and connected to the acrylic transparent tube A (10), and the pressure sensor B (14) is close to the outlet of the acrylic transparent tube A (10). The pressure sensor C (18) is fixed and connected to the acrylic transparent tube C (17), and the pressure sensor C (18) is close to the inlet of the acrylic transparent tube C (17). The dissolved oxygen sensor B (19) is fixed and connected to the acrylic transparent tube C (17), and the dissolved oxygen sensor B (19) is close to the outlet of the acrylic transparent tube C (17).

4. The experimental device for simulating the flow and dissolution-precipitation process of a gas-liquid mixture according to claim 3, characterized in that: The dissolved oxygen detection assembly comprises a glass measuring cylinder (7), a loop hose (8) and a switch valve B (9). The glass measuring cylinder (7) is arranged between a stainless steel pump A (5) and an acrylic transparent tube A (10). The loop hose (8) is inserted into the glass measuring cylinder (7). The loop hose (8) is connected to the switch valve B (9). The switch valve B (9) is fixed and connected to the loop pipe (2).

5. The experimental device for simulating the flow and dissolution-precipitation process of a gas-liquid mixture according to claim 1, characterized in that: The oxygen removal component comprises a nitrogen switch valve (21), a pressure relief valve C (22), a pressure reducing valve A (23) and a nitrogen cylinder (24). The nitrogen cylinder (24) is connected to the water tank (20) through a loop pipe (2). The nitrogen switch valve (21) is arranged between the water tank (20) and the nitrogen cylinder (24) near the water tank (20), and the nitrogen switch valve (21) is fixed and connected to the loop pipe (2). The pressure reducing valve A (23) is arranged between the water tank (20) and the nitrogen cylinder (24) near the nitrogen cylinder (24), and the pressure reducing valve A (23) is fixed and connected to the loop pipe (2). The pressure relief valve C (22) is arranged between the nitrogen switch valve (21) and the pressure reducing valve A (23), and the pressure relief valve C (22) is fixed and connected to the loop pipe (2).

6. The experimental device for simulating the flow and dissolution-precipitation process of a gas-liquid mixture according to claim 1, characterized in that: The invention also includes an air bottle (28), a pressure reducing valve (29), a pressure relief valve D (30), a switch valve D (31), a gas flow meter A (32), a one-way valve A (33) and a transport pipe (34). The air bottle (28) is connected to the pressure-stabilizing water tank (1) through the transport pipe (34). The pressure reducing valve (29) is fixed and connected to the transport pipe (34), and the pressure reducing valve (29) is close to the air bottle (28). The pressure relief valve D (30) is fixed and connected to the transport pipe (34), and the inlet of the pressure relief valve D (30) is The port is connected to the outlet of the pressure reducing valve (29), the switch valve D (31) is fixed and connected to the transport pipe (34), and the inlet of the switch valve D (31) is connected to the outlet of the pressure relief valve D (30), the gas flow meter A (32) is fixed and connected to the transport pipe (34), and the gas flow meter A (32) is close to the pressure stabilizing water tank (1), the one-way valve A (33) is arranged between the pressure stabilizing water tank (1) and the gas flow meter A (32), and the one-way valve A (33) is fixed and connected to the transport pipe (34).

7. The experimental device for simulating the flow and dissolution-precipitation process of a gas-liquid mixture according to claim 1, characterized in that: It also includes a pressure gauge (36), which is fixed on the pressure-stabilizing water tank (1).

8. The experimental device for simulating the flow and dissolution-precipitation process of a gas-liquid mixture according to claim 1, characterized in that: The invention also includes an air switch valve (39), a gas flow meter B (40) and a one-way valve C (41), wherein the air switch valve (39) is arranged between the acrylic transparent tube A (10) and the air compressor (38), and the air switch valve (39) is fixed to and connected to the loop pipe (2), the gas flow meter B (40) is fixed to and connected to the loop pipe (2), and one end of the gas flow meter B (40) is connected to the outlet of the air switch valve (39), and the one-way valve C (41) is arranged between the air inlet (13) and the gas flow meter B (40), and the one-way valve C (41) is fixed to and connected to the loop pipe (2).

9. The experimental device for simulating the flow and dissolution-precipitation process of a gas-liquid mixture according to claim 1, characterized in that: It also includes an air release valve (37), which is fixed to and connected to the pressure-stabilizing water tank (1).

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