Simulation device based on water content distribution of lunar impact and water content measurement method

Abstract

The present invention discloses a simulation device based on the distribution of water content in lunar impact and a method for measuring water content, which relates to the technical field of lunar surface exploration. A water vapor release structure is used to generate water vapor, a vacuum structure is used to control air pressure, and each water vapor adsorption structure includes a plurality of branch pipes, each branch pipe is used to place simulated lunar soil, each branch pipe is connected to a cooling structure, the cooling structure is used to cool the branch pipe, and a vacuum gauge is used to detect the water content captured by the simulated lunar soil. The method for measuring water content includes the following steps: Step 1, simulating the lunar air pressure environment through the vacuum structure, and simulating the lunar temperature environment through the cooling structure; Step 2, the water vapor release structure generates water vapor, the water vapor enters each branch pipe, and is captured by the simulated lunar soil; Step 3, heating each branch pipe one by one, and detecting the water content captured by the simulated lunar soil in the corresponding branch pipe by a vacuum gauge. The present invention solves the problem of ground-based prediction of the distribution and content of water on the lunar surface, and has guiding significance for the detection of lunar water.

Description

Technical Field

[0001] The present invention relates to the field of lunar surface exploration technology, and in particular to a simulation device based on the distribution of water content in lunar impact and a method for measuring the water content. Background Art

[0002] Lunar water is one of the important extraterrestrial resources. It is of great significance for us to build a lunar space station and understand scientific issues such as the origin and evolution of the moon. my country's fourth phase of lunar exploration is about to land in the permanent shadow area near the south pole of the moon. The landing area is close to the largest and oldest impact basin on the moon, the Aiken Basin (SPA), and it is expected to find available water resources in the exploration area. NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) detection data show that lunar water may be adsorbed in the lunar soil, with a concentration of 100ppm to 412ppm (parts per million).

[0003] Existing lunar water detection is carried out through chemical composition analysis of meteorites and lunar return samples (lunar soil). Currently, there are problems such as the limited amount of lunar samples and the limited location of sampling points for lunar exploration missions.

[0004] Existing research on the distribution of water content in lunar impacts is mainly conducted through meteorite and lunar return sample (lunar soil) analysis detection, simulation and calculation methods. At present, the limited amount of lunar samples and the location of sampling points in lunar exploration missions have led to insufficient research in this area. Summary of the invention

[0005] The purpose of the present invention is to provide a simulation device based on the distribution of water content in lunar impact and a method for measuring water content, which solves the problem of ground-based prediction of the distribution and content of water on the lunar surface and has guiding significance for the detection of lunar water.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a simulation device based on the distribution of water content in a lunar impact, comprising a simulation structure body, a water vapor release structure, a vacuum gauge, a vacuum structure, a cooling structure and a plurality of water vapor adsorption structures, wherein the water vapor release structure, the vacuum gauge, the vacuum structure and the plurality of water vapor adsorption structures can all be connected to the simulation structure body, the water vapor release structure is used to generate water vapor, the vacuum structure is used to control the air pressure in the simulation device based on the distribution of water content in a lunar impact, each of the water vapor adsorption structures comprises a plurality of branch pipes, each of the branch pipes is used to place simulated lunar soil, each of the branch pipes is connected to the cooling structure, the cooling structure is used to cool the branch pipes, and the vacuum gauge is used to detect the water content captured by the simulated lunar soil.

[0008] Preferably, the water vapor release structure includes a storage tube, a first valve is provided between the storage tube and the simulation structure body, the storage tube is used to hold copper hydroxide powder, the outside of the storage tube is used to connect with a heating structure, and the heating structure can heat the storage tube so that the copper hydroxide powder in the storage tube generates water vapor.

[0009] Preferably, the simulation structure body is a linear tubular structure, and each of the water vapor adsorption structures is evenly arranged around the axial direction of the simulation structure body.

[0010] Preferably, each of the water vapor adsorption structures further comprises a main pipe, a second valve is provided between the simulation structure body and each of the main pipes, and a third valve is provided between the main pipe of the water vapor adsorption structure and each of the branch pipes.

[0011] Preferably, the branch pipes in the same water vapor adsorption structure are arranged at equal intervals along the radial direction of the simulation structure body, and the vertical distance between the innermost branch pipe and the axis of the simulation structure body is equal to the interval between adjacent branch pipes.

[0012] Preferably, the innermost branch pipes in each of the water vapor adsorption structures are located on the same circumference.

[0013] Preferably, the vacuum structure comprises a molecular pump and a mechanical pump, the molecular pump is connected to the simulation structure body and the mechanical pump respectively, and a fourth valve is provided between the molecular pump and the simulation structure body.

[0014] Preferably, a temperature sensor is provided in the simulation device based on the distribution of water content in the lunar impact, and the temperature sensor is electrically connected to a recorder outside the simulation structure body.

[0015] Preferably, the outside of each branch pipe is used to be connected to a heating structure.

[0016] The present invention also provides a method for measuring water content using a simulation device based on the distribution of water content in lunar impact, comprising the following steps:

[0017] Step 1: Control the air pressure in the simulation device based on the distribution of water content in the lunar impact through the vacuum structure to simulate the lunar air pressure environment; control the temperature of the branch pipe through the cooling structure to simulate the lunar temperature environment;

[0018] Step 2: The water vapor release structure generates water vapor, which enters each branch pipe and is captured by the simulated lunar soil;

[0019] Step three: heat each branch tube one by one and use a vacuum gauge to detect the water content captured by the simulated lunar soil in the corresponding branch tube.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] The present invention can simulate the low temperature and low pressure environment on the lunar surface; the water vapor release structure simulates the release of water vapor at the impact point, and the water vapor adsorption structure simulates the cold trap in different directions from the impact point; each branch pipe in each water vapor adsorption structure is used to simulate the adsorption capacity of lunar soil for water at different positions on the lunar surface. The present invention can heat copper hydroxide in a high vacuum system to simulate the release of water during the lunar impact process, and conduct research by simulating the amount of water adsorbed by the lunar soil at low temperature, so as to obtain the distribution trend of water content in the lunar impact, and provide a basis for the subsequent processing and application of on-orbit data. The present invention simulates the lunar surface environment by building a vacuum system on the ground, and achieves the purpose of ground simulation, prediction of the distribution of water on the lunar surface and content measurement during the lunar impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 Schematic diagram of the simulation device based on the distribution of water content in lunar impact according to the present invention (two water vapor adsorption structures);

[0024] Figure 2 A schematic diagram of the positional relationship between the three water vapor adsorption structures of the present invention and the simulation structure body;

[0025] Among them: 100-simulation device based on the distribution of water content in lunar impact, 1-simulation structure body, 2-water vapor release structure, 3-vacuum gauge, 4-molecular pump, 5-mechanical pump, 6-cooling structure, 7-main pipe, 8-branch pipe, 9-first valve, 10-heating structure, 11-second valve, 12-third valve, 13-temperature sensor, 14-recorder, 15-fourth valve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The purpose of the present invention is to provide a simulation device based on the distribution of water content in lunar impact and a method for measuring water content, which solves the problem of ground-based prediction of the distribution and content of water on the lunar surface and has guiding significance for the detection of lunar water.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Embodiment 1

[0030] like Figure 1 to Figure 2 As shown: This embodiment provides a simulation device 100 based on the distribution of water content in lunar impact, including a simulation structure body 1, a water vapor release structure 2, a vacuum gauge 3, a vacuum structure and a plurality of water vapor adsorption structures. The water vapor release structure 2, the vacuum gauge 3, the vacuum structure and the plurality of water vapor adsorption structures can all be connected to the simulation structure body 1. The water vapor release structure 2 is used to generate water vapor. The water vapor release structure 2 is used to simulate the impact point. The vacuum structure is used to control the air pressure in the simulation device 100 based on the distribution of water content in lunar impact. Each water vapor adsorption structure includes a plurality of branch pipes 8. The branch pipes 8 are quartz tubes. Each branch pipe 8 is used to place simulated lunar soil. The simulated lunar soil in each branch pipe 8 is equal. Each branch pipe 8 is connected to a cooling structure 6. The cooling structure 6 is used to cool the branch pipes 8. The branch pipes 8 are cooled by the cooling structure 6 so that the branch pipes 8 are in a low-temperature environment to simulate the low-temperature environment on the lunar surface. The cooling structure 6 is preferably a liquid nitrogen circulation cooling device. The cooling structure 6 is used to reduce the temperature of the internal simulated lunar soil to adsorb the released water vapor. The vacuum gauge 3 detects the air pressure value in the device to reflect the water content captured by the simulated lunar soil.

[0031] Specifically, in this embodiment, Figure 1 As shown, there are two water vapor adsorption structures; Figure 2 As shown, there are three water vapor adsorption structures; the number of water vapor adsorption structures is set according to needs. Each water vapor adsorption structure includes three branch pipes 8, and the number of branch pipes 8 is set according to needs.

[0032] In this embodiment, the water vapor release structure 2 includes a storage tube, which is a quartz tube. A first valve 9 is arranged between the storage tube and the simulation structure body 1. The storage tube is used to hold copper hydroxide powder. The outside of the storage tube is used to connect with the heating structure 10. The heating structure 10 is preferably a resistance wire. The heating structure 10 can heat the storage tube so that the copper hydroxide powder in the storage tube generates water vapor.

[0033] In this embodiment, the simulation structure body 1 is a linear tubular structure, preferably a quartz tube, and each water vapor adsorption structure is evenly arranged around the axial direction of the simulation structure body 1; each water vapor adsorption structure also includes a main pipe 7, which is a quartz tube, and a second valve 11 is arranged between the simulation structure body 1 and each main pipe 7, and a third valve 12 is arranged between the main pipe 7 of each water vapor adsorption structure and each branch pipe 8; each branch pipe 8 in the same water vapor adsorption structure is arranged at equal intervals along the radial direction of the simulation structure body 1, and the vertical distance between the innermost branch pipe 8 and the axis of the simulation structure body 1 is equal to the spacing between adjacent branch pipes 8, which is used to simulate the water capture ability of the simulated lunar soil at different distances from the release point; the innermost branch pipe 8 in each water vapor adsorption structure is located on the same circumference; the outside of each branch pipe 8 is used to connect with the heating structure 10, and the branch pipe 8 is heated by the heating structure 10, so that the water in the simulated lunar soil that has absorbed water in the branch pipe 8 can be released.

[0034] In this embodiment, a temperature sensor 13 is provided in the simulation device based on the distribution of water content in lunar impact, which can be specifically provided in the simulation structure body 1 or the main pipe 7, or in a pipeline connected to the simulation structure body 1. The temperature sensor 13 is electrically connected to a recorder 14 outside the simulation structure body 1. The recorder 14 is preferably a paperless recorder. The temperature sensor 13 is used to monitor the temperature of the simulated lunar soil in the system.

[0035] In this embodiment, the vacuum structure includes a molecular pump 4 and a mechanical pump 5. The molecular pump 4 is connected to the simulation structure body 1 and the mechanical pump 5 respectively. A fourth valve 15 is provided between the molecular pump 4 and the simulation structure body 1. The mechanical pump 5 is responsible for maintaining the front vacuum of the molecular pump 4 and can perform rough pumping on the system. The molecular pump 4 is responsible for providing a high vacuum environment in the system. This embodiment simulates the low-pressure environment on the lunar surface through the vacuum structure.

[0036] This embodiment can simulate the low temperature and low pressure environment on the lunar surface; the water vapor adsorption structure simulates cold traps in different directions from the impact point; the branch pipes 8 in each water vapor adsorption structure are used to simulate the water adsorption capacity of the lunar soil at different positions on the lunar surface; the branch pipes 8 in the same water vapor adsorption structure are arranged at equal intervals along the radial direction of the simulation structure body 1 to simulate the change of the adsorbed water content of the lunar soil with the change of the distance from the impact point during the lunar impact process; the temperature sensor 13 and the paperless recorder monitor the temperature change of the lunar soil during the impact process in real time.

[0037] This embodiment can heat copper hydroxide in a high vacuum system to simulate the release of water during a lunar impact, and study the amount of low-temperature water adsorbed by simulated lunar soil at different circular and linear distances from the impact point to obtain the distribution trend of lunar impact water content, providing a basis for subsequent on-orbit data processing and application.

[0038] This embodiment uses copper hydroxide to release water by heating, thereby avoiding the interference of other material elements on water in the chemical composition analysis of meteorites and lunar return samples (lunar soil). At the same time, simulated lunar soil is used to avoid the problems of limited lunar sample quantity and limited location of sampling points in lunar exploration missions.

[0039] Embodiment 2

[0040] The method for measuring the water content of the simulation device 100 based on the water content distribution of lunar impact according to the first embodiment includes the following steps:

[0041] Step 1: Open the first valve 9, the second valve 11, the third valve 12 and the fourth valve 15, control the air pressure in the simulation device 100 based on the distribution of water content in lunar impact through the vacuum structure to simulate the lunar air pressure environment, close the fourth valve 15, control the temperature of the branch pipe 8 through the cooling structure 6 to simulate the lunar temperature environment;

[0042] Step 2: The heating structure 10 heats the copper hydroxide powder in the water vapor release structure 2 to generate water vapor. The second valve 11 controls the water vapor released by the copper hydroxide powder to simulate the process of the moon releasing "water" instantly when it is hit by comets and other asteroids. The water vapor enters each branch pipe 8. Each branch pipe 8 forms a low-temperature environment under the action of the cooling structure 6. The simulated lunar soil in each branch pipe 8 absorbs water vapor under low temperature and low pressure conditions, and the first valve 9, the second valve 11 and the third valve 12 are closed.

[0043] Step three, the heating structure 10 heats each branch pipe 8 one by one. When heating a branch pipe 8, the second valve 11 and the corresponding third valve 12 are opened, and the water content captured by the simulated lunar soil in the corresponding branch pipe 8 is detected by the vacuum gauge 3.

[0044] A Pt100 temperature sensor was used to monitor the temperature changes during the simulated impact process, and a paperless recorder was used to export and analyze the multiple test data to simulate the changes in the water content of the lunar soil with temperature. The amount of copper hydroxide powder was changed to simulate the different water contents released by the lunar impact, so as to construct a lunar impact water content distribution model, so that effective ground simulation experiments can provide strong support for the distribution analysis of water in lunar impact craters in deep space exploration and the estimation and prediction of lunar water content in the future.

[0045] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A simulation device based on the distribution of water content in lunar impact, characterized in that: It includes a simulation structure body, a water vapor release structure, a vacuum gauge, a vacuum structure, a cooling structure and several water vapor adsorption structures. The water vapor release structure, the vacuum gauge, the vacuum structure and the several water vapor adsorption structures can all be connected to the simulation structure body. The water vapor release structure is used to generate water vapor. The vacuum structure is used to control the air pressure in the simulation device based on the distribution of water content in lunar impact. Each of the water vapor adsorption structures includes several branch pipes, each of which is used to place simulated lunar soil. Each of the branch pipes is connected to the cooling structure, and the cooling structure is used to cool the branch pipes. The vacuum gauge is used to detect the water content captured by the simulated lunar soil.

2. The simulation device based on the distribution of water content in lunar impact according to claim 1, characterized in that: The water vapor release structure includes a storage tube, a first valve is arranged between the storage tube and the simulation structure body, the storage tube is used to hold copper hydroxide powder, the outside of the storage tube is used to connect with the heating structure, and the heating structure can heat the storage tube so that the copper hydroxide powder in the storage tube generates water vapor.

3. The simulation device based on the distribution of water content in lunar impact according to claim 1, characterized in that: The simulation structure body is a linear tubular structure, and each of the water vapor adsorption structures is evenly arranged around the axial direction of the simulation structure body.

4. The simulation device based on the distribution of water content in lunar impact according to claim 1, characterized in that: Each of the water vapor adsorption structures further comprises a main pipe, a second valve is arranged between the simulation structure body and each of the main pipes, and a third valve is arranged between the main pipe of the water vapor adsorption structure and each of the branch pipes.

5. The simulation device based on the distribution of water content in lunar impact according to claim 1, characterized in that: The branch pipes in the same water vapor adsorption structure are arranged at equal intervals along the radial direction of the simulation structure body, and the vertical distance between the innermost branch pipe and the axis of the simulation structure body is equal to the interval between adjacent branch pipes.

6. The simulation device based on the distribution of water content in lunar impact according to claim 5, characterized in that: The innermost branch pipes in each of the water vapor adsorption structures are located on the same circumference.

7. The simulation device based on the distribution of water content in lunar impact according to claim 1, characterized in that: The vacuum structure comprises a molecular pump and a mechanical pump. The molecular pump is connected to the simulation structure body and the mechanical pump respectively. A fourth valve is arranged between the molecular pump and the simulation structure body.

8. The simulation device based on the distribution of water content in lunar impact according to claim 1, characterized in that: A temperature sensor is provided in the simulation device based on the distribution of water content in lunar impact, and the temperature sensor is electrically connected to a recorder outside the simulation structure body.

9. The simulation device based on the distribution of water content in lunar impact according to claim 1, characterized in that: The outside of each branch pipe is used for connecting with a heating structure.

10. A method for measuring water content of a simulation device based on the distribution of water content of lunar impact according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Control the air pressure in the simulation device based on the distribution of water content in the lunar impact through the vacuum structure to simulate the lunar air pressure environment; control the temperature of the branch pipe through the cooling structure to simulate the lunar temperature environment; Step 2: The water vapor release structure generates water vapor, which enters each branch pipe and is captured by the simulated lunar soil; Step three: heat each branch tube one by one and use a vacuum gauge to detect the water content captured by the simulated lunar soil in the corresponding branch tube.

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