Horizontal type steam ice condensing device for preparing lunar ice soil simulation substance and use method of horizontal type steam ice condensing device

Abstract

The invention provides a horizontal type steam ice condensing device for preparing lunar ice soil simulation substances and a using method of the horizontal type steam ice condensing device, and belongs to the technical field of aerospace. The problems that an existing lunar ice soil substance simulant is not high in real degree and small in sample preparation amount are solved. One end of a tail tee joint is connected with an electrode, one end of the tail tee joint is connected with an adapter, the upper end of the tail tee joint is connected with a vacuum gauge, a temperature sensor is connected with the electrode, the electrode is inserted into a sample in a stirring body to monitor the temperature of the sample in the test process, and the adapter is sequentially connected with the stirring body, a valve, a motor, magnetofluid and a first reversing valve; and the other three ends are respectively connected with the first reversing valve, the second reversing valve and the third reversing valve through flanges. The simulation process of the device almost completely simulates the high-vacuum ultralow-temperature environment of the lunar surface, the pressure intensity is as low as 10 <-3 > Pa, the temperature is as low as 77K, and the water molecule migration process also simulates the process that water ice on the lunar surface is sublimated into water molecule flow to adsorb lunar soil particles.

Description

Technical Field

[0001] The present invention belongs to the field of aerospace technology, and in particular relates to a horizontal steam-condensing ice device for preparing lunar ice soil simulation material and a use method thereof. Background Art

[0002] Through long-distance remote sensing detection, humans have proved that there is natural ice water in the permanent shadow areas at the north and south poles of the moon, and it exists in the lunar soil profile in the physical form of ice-soil aggregates. The Chang'e-7 / 8 mission of my country's fourth phase of lunar exploration project will soon land on the South Pole. It is intended to conduct a verification survey combining remote sensing and sampling analysis on the actual occurrence of lunar water ice and volatiles, and to implement new technology experiments such as precise exploration and large-scale utilization of mineral resources such as lunar soil and water ice. In order to meet the major needs of engineering projects, it is necessary to solve basic problems such as lunar soil water ice material simulation, comprehensive physical property testing and characterization of lunar soil water ice.

[0003] The technical routes that have emerged so far can be summarized into three categories: normal-pressure water-frozen ice, low-temperature ice-mixed soil, and normal-pressure steam-condensed ice. They can basically meet the envelope simulation and engineering verification of the harsh mechanical requirements of lunar soil water ice. However, the simulation preparation methods and process conditions have a low degree of conformity with the scientific mechanism of the actual formation and evolution mechanism of lunar soil water ice, resulting in a large gap between the physical properties of the lunar ice soil material simulation, such as thermal-electrical-optical-desorption properties, and the theoretical predicted values ​​of the real lunar ice soil material. Summary of the invention

[0004] In view of this, in order to solve the problem that the existing lunar ice soil material simulant has low simulation degree and small amount of prepared samples, the present invention proposes a horizontal steam condensation device for preparing lunar ice soil simulant and a method of using the same.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a horizontal steam condensation device for preparing lunar ice soil simulation material, including a vacuum gauge, a tail tee, a temperature sensor, an electrode, a adapter, a stirring body, a liquid nitrogen barrel, a pipeline, a valve, a motor, a magnetic fluid, a four-way pipeline, a No. 1 reversing valve, a No. 2 reversing valve, a No. 3 reversing valve, a test tube and a vacuum pump;

[0006] One end of the tail tee is connected to the electrode, the other end is connected to the adapter, and the upper end is connected to the vacuum gauge. The temperature sensor is connected to the electrode, and the sample temperature during the test is monitored by inserting the electrode into the sample in the stirring body. The adapter is connected to the stirring body, the valve, the motor, the magnetic fluid and the No. 1 reversing valve in sequence. One end of the four-way pipeline is fixed on the desktop through a flange, and the other three ends are respectively connected to the No. 1 reversing valve, the No. 2 reversing valve and the No. 3 reversing valve through flanges.

[0007] Furthermore, a small baffle and a large baffle are respectively welded to the front and rear of the stirring body, the adapter is connected to the small baffle via a flange, and the large baffle is connected to the pipeline via a flange.

[0008] Furthermore, the tail tee, adapter, small baffle, stirring body, large baffle, pipeline, valve, motor seat, magnetic fluid, four-way pipeline, No. 1 reversing valve, No. 2 reversing valve, No. 3 reversing valve, test tube and vacuum pump all allow gas to flow through.

[0009] Furthermore, the vacuum gauge is used to monitor the tightness and vacuum degree of the equipment during the test.

[0010] Furthermore, the No. 1 reversing valve is used to control the switch of the water molecule migration path, the No. 2 reversing valve is used to control whether the water molecules escape, and the No. 3 reversing valve is used to control the switch of the vacuum pump on the test device.

[0011] Furthermore, the test tube is used to store a certain amount of water before the test.

[0012] Furthermore, the vacuum pump is used to extract the gas in the device to provide a vacuum environment for the test.

[0013] Furthermore, a liquid nitrogen barrel is installed below the stirring body. During the test, the gap between the liquid nitrogen barrel and the stirring body is filled with liquid nitrogen to maintain a low temperature environment of the test device.

[0014] Furthermore, the valve is used to control the movement of gaseous water. The valve and the motor seat are connected by a flange, and the motor seat and the bracket are fixed by bolts. A groove is dug on the bracket to adjust the height of the motor seat as needed. The rotation between the motor seat and the motor is transmitted through a gear pair.

[0015] A method for using a horizontal steam-condensing ice device for preparing lunar ice soil simulant material specifically comprises the following steps:

[0016] (1) According to the preparation requirements, add dry simulated lunar soil into the stirring body through a small baffle, and add deionized water into the test tube;

[0017] (2) Close the No. 2 reversing valve, open the No. 1 reversing valve, No. 3 reversing valve and the valve, connect the vacuum gauge power cord, turn off the motor, turn on the vacuum pump, and extract the vacuum value of the device to make the pressure reach 10 -3 Pa and maintain;

[0018] (3) Close the No. 3 reversing valve, fill the liquid nitrogen barrel with liquid nitrogen, place it under the test tube, allow the deionized water to solidify quickly, and unplug the power cord of the vacuum gauge and the connection wires between the electrode and the temperature sensor;

[0019] (4) Turn on the motor, open the No. 2 reversing valve, fill the liquid nitrogen barrel with liquid nitrogen and move it to the bottom of the stirring body. At this time, the motor drives the vacuum gauge, the tail tee, the electrode, the adapter, the small baffle, the stirring body, the large baffle, the pipeline, the valve, the motor, and the magnetic fluid to rotate simultaneously. The ice in the test tube sublimates into water molecules and flows along the test tube, the No. 2 reversing valve, the four-way pipeline, the No. 1 reversing valve, the magnetic fluid, the motor seat, the valve, and the pipeline into the stirring body, where it mixes with the simulated lunar soil and adheres to the simulated lunar soil particles.

[0020] (5) After all the water in the test tube has been transferred to the stirring body, turn off the motor and the valve, remove the bolts between the valve and the motor base, and then remove the test part. Maintain the vacuum state, transfer the valve and the equipment on the left to the vacuum box, remove the small baffle, and pour out the prepared lunar ice soil simulant for characterization.

[0021] Compared with the prior art, the horizontal steam-condensing ice device for preparing lunar ice soil simulant and the use method thereof described in the present invention have the following beneficial effects:

[0022] (1) The simulation process of this device almost completely simulates the high vacuum and ultra-low temperature environment on the lunar surface, with a pressure as low as 10 -3 Pa, the temperature is as low as 77K, and the water molecule migration process also simulates the process of water ice on the lunar surface sublimating into water molecule flow adsorbing lunar soil particles.

[0023] (2) The existing lunar ice soil simulant vapor condensation ice preparation device can only achieve the preparation of hundreds of grams, which is difficult to meet the needs of scientific research and engineering practice. The present invention can achieve the preparation of kilogram-level samples by adjusting the cavity structure size.

[0024] (3) The existing lunar ice soil simulant vapor condensation preparation device needs to completely dry the sample before the experiment to remove the moisture on the surface of the particles. The present invention can directly desorb the water molecules on the surface of the simulated lunar soil particles by vacuuming and transporting them along the pipeline, and then discharge them through the vacuum pump to achieve the purpose of drying.

[0025] (4) The present invention can use a motor to rotate the mixed particles and water molecule flow in the experiment, which can improve the uniformity of the water content of the sample, and the Christensen uniformity coefficient can reach 0.95.

[0026] (5) The present invention can prepare lunar soil simulant with a kilogram-level moisture content of 0.05% to 8%, and the Christensen uniformity coefficient can reach 0.95. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 This is a schematic structural diagram of a horizontal steam-condensing ice device for preparing lunar ice soil simulant according to the present invention;

[0029] Figure 2 It is a structural schematic diagram of the vacuum gauge of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the tail tee of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the temperature sensor of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the adapter of the present invention;

[0033] Figure 6 This is a schematic structural diagram of the small baffle of the present invention;

[0034] Figure 7 It is a structural schematic diagram of the stirring body of the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of the liquid nitrogen barrel of the present invention;

[0036] Fig. 9 It is a structural schematic diagram of the large baffle of the present invention;

[0037] Fig.10 It is a structural schematic diagram of the pipeline of the present invention;

[0038] Fig.11 It is a structural schematic diagram of the valve of the present invention;

[0039] Fig.12 It is a structural schematic diagram of the motor and the base of the present invention;

[0040] Fig.13 It is a structural schematic diagram of the motor base of the present invention;

[0041] Fig.14 It is a structural schematic diagram of the magnetic fluid of the present invention;

[0042] Fig.15 It is a structural schematic diagram of the four-way pipeline of the present invention;

[0043] Fig.16 It is a structural schematic diagram of the reversing valve of the present invention;

[0044] Fig.17 It is a schematic diagram of the structure of the test tube of the present invention;

[0045] Fig.18It is a structural schematic diagram of the vacuum pump of the present invention;

[0046] In the figure: vacuum gauge 1, tail tee 2, temperature sensor 3, electrode 4, adapter 5, small baffle 6, stirring body 7, liquid nitrogen barrel 8, large baffle 9, pipeline 10, valve 11, motor 12, motor seat 13, bracket 14, magnetic fluid 15, four-way pipeline 16, No. 1 reversing valve 17, No. 2 reversing valve 18, No. 3 reversing valve 19, test tube 20, vacuum pump 21. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0048] See also Figure 1-18 To illustrate this embodiment, a horizontal steam condensation device for preparing lunar ice soil simulation material includes a vacuum gauge 1, a tail tee 2, a temperature sensor 3, an electrode 4, a adapter 5, a stirring body 7, a liquid nitrogen barrel 8, a pipeline 10, a valve 11, a motor 12, a magnetic fluid 15, a four-way pipeline 16, a first reversing valve 17, a second reversing valve 18, a third reversing valve 19, a test tube 20 and a vacuum pump 21;

[0049] One end of the tail tee 2 is connected to the electrode 4, the other end is connected to the adapter 5, and the upper end is connected to the vacuum gauge 1. The temperature sensor 3 is connected to the electrode 4, and the sample temperature in the test process is monitored by inserting the sample in the stirring body 7 through the electrode 4. The adapter 5 (cf35 to 16) is connected to the stirring body 7, the valve 11, the motor 12, the magnetic fluid 15 and the No. 1 reversing valve 17 in sequence. One end of the four-way pipeline 16 is fixed on the desktop through a flange, and the other three ends are respectively connected to the No. 1 reversing valve 17, the No. 2 reversing valve 18 and the No. 3 reversing valve 19 through flanges.

[0050] Except for the magnetic fluid 15 and the No. 1 reversing valve 17, the adapter 5 and the stirring body 7, the other components are connected by bolts, and the bracket 13 and the four-way pipeline 15 are fixed on the desktop by bolts.

[0051] Among them, the tail tee 2, the adapter 5, the small baffle 6, the stirring body 7, the large baffle 9, the pipeline 10, the valve 11, the motor seat 13, the magnetic fluid 15, the four-way pipeline 16, the No. 1 reversing valve 17, the No. 2 reversing valve 18, the No. 3 reversing valve 19, the test tube 20, and the vacuum pump 21 all allow gas to flow through.

[0052] The vacuum gauge 1 and the electrode 4 are connected through the tail tee 2. The vacuum gauge 1 is used to monitor the sealing and vacuum degree of the equipment during the test. The temperature sensor 3 is connected to the electrode 4. The temperature sensor in the figure refers to the digital display panel. The temperature sensor 3 is a whole of two wires similar to a thermocouple. It is inserted into the stirring body 6 through the electrode 4 and attached to the stirring body to complete the temperature measurement. The tail tee 2 is connected to the adapter 5 through a flange, and the adapter 5 is connected to the small baffle 6 through a flange. The small baffle 6 is fixed to the stirring body 7 by welding, and the stirring body 7 is also fixed to the large baffle 9 by welding. A reasonable gap is maintained between the liquid nitrogen barrel 8 and the stirring body 7 (to allow the stirring body to be immersed as much as possible). Liquid nitrogen does not interfere with the liquid nitrogen barrel), the test device is filled with liquid nitrogen during the test interval to maintain the low temperature environment of the test device, the large baffle 9 is connected to the pipeline 10 through a flange, the pipeline 10 is connected to the valve 11 through a flange, the valve 11 is used to control the movement of gaseous water, the valve 11 and the motor seat 13 are connected through a flange, the motor seat 13 and the bracket 14 are fixed by bolts, the bracket 14 is dug with a groove, and the height of the motor seat 13 can be adjusted as needed, the motor seat 13 and the motor 12 are transmitted through a gear pair, the motor seat 13 and the magnetic fluid 15 are connected through a flange, and the magnetic fluid 15 and the No. 1 reversing valve 17 are connected through a flange.

[0053] One end of the four-way pipe 16 is fixed on the desktop through a flange, and the other three ends are connected to the reversing valves 17, 18, and 19 through flanges. The No. 1 reversing valve 17 is used to control the switch of the water molecule migration path, the No. 2 reversing valve 18 is used to control whether the water molecules escape, and the No. 3 reversing valve 19 is used to control the switch of the vacuum pump on the test device. The test tube 20 is used to store a certain amount of water before the test, and the vacuum pump 21 is used to extract the gas in the device to provide a vacuum environment for the test.

[0054] The working principle of the horizontal steam-condensing ice device for preparing lunar ice soil simulation material described in the present invention is:

[0055] Based on the actual space environment and material conversion basis of the lunar South Pole, a low-temperature and high-vacuum environment that is highly consistent with the lunar South Pole environment is designed on the ground. The lunar soil particles are pre-cooled at low temperatures and then stirred and thrown to make them meet the flow of water molecules. After encountering the extremely low-temperature lunar soil particles, the flow of water molecules condenses and deposits on the surface of the particles to form micro ice particles. Numerous water molecules are continuously deposited and stacked on the surface of the particles to form an ice film, achieving highly realistic preparation of lunar soil water ice.

[0056] The specific method of using the horizontal steam condensation device for preparing lunar ice soil simulation material of the present invention is as follows:

[0057] (1) According to the preparation requirements, add dry simulated lunar soil into the stirring body 7 through the small baffle 6, and add deionized water into the test tube 20.

[0058] (2) Close the No. 2 reversing valve 18, open the No. 1 reversing valve 17, the No. 3 reversing valve 19 and the valve 11, connect the power line of the vacuum gauge 1, turn off the motor 12, turn on the vacuum pump 21, and extract the vacuum value of the device to make the pressure reach 10 -3 Pa and maintain.

[0059] (3) Close the No. 3 reversing valve 19, fill the liquid nitrogen barrel 8 with liquid nitrogen, and place it under the test tube 20 to make the deionized water solidify quickly, and unplug the power cord of the vacuum gauge 1 and the connection wires between the electrode 4 and the temperature sensor 3.

[0060] (4) Turn on the motor 12, open the No. 2 reversing valve 18, fill the liquid nitrogen barrel 8 with liquid nitrogen and move it to the bottom of the stirring body 7. At this time, the motor 12 drives the vacuum gauge 1, the tail tee 2, the electrode 4, the adapter 5, the small baffle 6, the stirring body 7, the large baffle 9, the pipeline 10, the valve 11, the motor 12, and the magnetic fluid 15 to rotate simultaneously. The ice in the test tube 20 sublimates into water molecules and flows along the test tube 20, the No. 2 reversing valve 18, the four-way pipeline 16, the No. 1 reversing valve 17, the magnetic fluid 15, the motor seat 13, the valve 11, and the pipeline 10 into the stirring body 7, where it is mixed with the simulated lunar soil and attached to the simulated lunar soil particles.

[0061] (5) After all the water in the test tube 20 is transferred to the stirring body 7, turn off the motor 12 and the valve 11, remove the bolts between the valve 11 and the motor base 13, and then remove the test part. Maintain the vacuum state, transfer the valve 11 and the equipment on the left to the vacuum box, remove the small baffle 6, and pour out the prepared lunar ice soil simulant for characterization.

[0062] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A horizontal steam-condensing ice device for preparing lunar ice soil simulant, characterized in that: It comprises a vacuum gauge (1), a tail tee (2), a temperature sensor (3), an electrode (4), an adapter (5), a stirring body (7), a liquid nitrogen barrel (8), a pipeline (10), a valve (11), a motor (12), a magnetic fluid (15), a four-way pipeline (16), a first reversing valve (17), a second reversing valve (18), a third reversing valve (19), a test tube (20) and a vacuum pump (21); One end of the tail tee (2) is connected to the electrode (4), the other end is connected to the adapter (5), and the upper end is connected to the vacuum gauge (1). The temperature sensor (3) is connected to the electrode (4), and the sample temperature in the test process is monitored by inserting the electrode (4) into the sample in the stirring body (7). The adapter (5) is connected to the stirring body (7), the valve (11), the motor (12), the magnetic fluid (15) and the first reversing valve (17) in sequence. One end of the four-way pipeline (16) is fixed on a plane through a flange, and the other three ends are respectively connected to the first reversing valve (17), the second reversing valve (18) and the third reversing valve (19) through flanges.

2. The horizontal steam-condensing ice device for preparing lunar ice soil simulant according to claim 1, characterized in that: A small baffle (6) and a large baffle (9) are welded to the front and rear of the stirring body (7), respectively; the adapter (5) is connected to the small baffle (6) via a flange, and the large baffle (9) is connected to the pipeline (10) via a flange.

3. The horizontal steam-condensing ice device for preparing lunar ice soil simulant according to claim 2, characterized in that: The tail tee (2), adapter (5), small baffle (6), stirring body (7), large baffle (9), pipeline (10), valve (11), motor base (13), magnetic fluid (15), four-way pipeline (16), No. 1 reversing valve (17), No. 2 reversing valve (18), No. 3 reversing valve (19), test tube (20) and vacuum pump (21) all allow gas to flow through.

4. The horizontal steam-condensing ice device for preparing lunar ice soil simulant according to claim 1, characterized in that: The vacuum gauge (1) is used to monitor the sealing performance and vacuum degree of the equipment during the test.

5. The horizontal steam-condensing ice device for preparing lunar ice soil simulant according to claim 1, characterized in that: The No. 1 reversing valve (17) is used to control the switch of the water molecule migration path, the No. 2 reversing valve (18) is used to control whether the water molecules escape, and the No. 3 reversing valve (19) is used to control the switch of the vacuum pump (21) to the test device.

6. The horizontal steam-condensing ice device for preparing lunar ice soil simulant according to claim 1, characterized in that: The test tube (20) is used to store a certain amount of water before the test.

7. The horizontal steam-condensing ice device for preparing lunar ice soil simulant according to claim 1, characterized in that: The vacuum pump (21) is used to extract the gas in the device to provide a vacuum environment for the test.

8. The horizontal steam-condensing ice device for preparing lunar ice soil simulant according to claim 1, characterized in that: A liquid nitrogen barrel (8) is installed below the stirring body (7). During the test, the gap between the liquid nitrogen barrel (8) and the stirring body (7) is filled with liquid nitrogen to maintain a low temperature environment of the test device.

9. The horizontal steam-condensing ice device for preparing lunar ice soil simulant according to claim 3, characterized in that: The valve (11) is used to control the movement of gaseous water. The valve (11) and the motor seat (13) are connected via a flange. The motor seat (13) and the bracket (14) are fixed via bolts. A groove is dug on the bracket (14). The height of the motor seat (13) is adjusted as required. The motor seat (13) and the motor (12) are rotated via a gear pair.

10. A method for using the horizontal steam-condensing ice device for preparing lunar ice soil simulant according to any one of claims 2 to 9, characterized in that: The specific steps include: (1) According to the preparation requirements, dry simulated lunar soil is added to the stirring body (7) through the small baffle (6), and deionized water is added to the test tube (20); (2) Close the No. 2 reversing valve (18), open the No. 1 reversing valve (17), the No. 3 reversing valve (19) and the valve (11), connect the power line of the vacuum gauge (1), turn off the motor (12), turn on the vacuum pump (21), and draw the vacuum value of the device to a pressure of 10 -3 Pa and maintain; (3) Close the No. 3 reversing valve (19), fill the liquid nitrogen barrel (8) with liquid nitrogen, place it under the test tube (20), allow the deionized water to solidify quickly, and unplug the power cord of the vacuum gauge (1) and the connection wires between the electrode (4) and the temperature sensor (3); (4) Turn on the motor (12), open the No. 2 reversing valve (18), fill the liquid nitrogen barrel (8) with liquid nitrogen and move it to the bottom of the stirring body (7), at this time, the motor (12) drives the vacuum gauge (1), the tail three-way (2), the electrode (4), the adapter (5), the small baffle (6), the stirring body (7), the large baffle (9), the pipeline (10), the valve (11), the motor (12), and the magnetic fluid (15) to rotate simultaneously, and the ice in the test tube (20) sublimates into water molecules and enters the stirring body (7) along the test tube (20), the No. 2 reversing valve (18), the four-way pipeline (16), the No. 1 reversing valve (17), the magnetic fluid (15), the motor seat (13), the valve (11), and the pipeline (10), and is mixed with the simulated lunar soil and attached to the simulated lunar soil particles; (5) After all the water in the test tube (20) is transferred to the stirring body (7), turn off the motor (12) and the valve (11), remove the bolts between the valve (11) and the motor base (13), and then remove the test part. Maintain the vacuum state, transfer the valve (11) and the equipment on the left to the vacuum box, remove the small baffle (6), and pour out the prepared lunar ice soil simulant for characterization.

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