Device for simulating concrete hardening in partial moon environment and working method

Abstract

The invention discloses a concrete hardening device for simulating partial lunar environment and a working method.The concrete hardening device comprises a lower barrel, an upper cover and a lower cover are arranged at the upper end of the lower barrel, the lower barrel is connected with the lower cover in a sealed mode, the upper cover is tightly adsorbed to the lower barrel through vacuum negative pressure, and the lower cover is connected with the lower barrel in a sealed mode; a rubber ring is arranged between the lower barrel and the upper cover; an inner container is arranged in the lower barrel, the inner container is divided into an upper cavity and a lower cavity, and a temperature adjusting device is arranged in the lower cavity and used for adjusting the temperature in the upper cavity; a pressure control device is arranged on the upper cover and is used for adjusting the pressure in the upper cavity so as to simulate a part of lunar environment; a central control system is further arranged on the outer side wall of the lower barrel and connected with the temperature adjusting device and the pressure control device. The lunar environment can be qualitatively and quantitatively simulated, part of the lunar environment can be simply and efficiently simulated, and the environment simulation cost is lower.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental simulation devices, and particularly relates to a concrete hardening device and a working method under a simulated partial lunar environment. Background Technique

[0002] The statements in this part only provide background technical information related to the present invention, and do not necessarily constitute prior art.

[0003] The construction of a lunar base can promote the innovation and breakthrough of space technology and accumulate experience for deep space exploration. At the same time, the lunar base can also serve as an ideal platform for astronomical observation, biological experiments and new material research and development. Its stable geological structure and high-vacuum environment provide unique conditions for various scientific experiments. However, to carry out a series of researches on the moon, many problems need to be overcome. The lunar environment is completely different from that of the earth. There is no atmosphere on the surface, which cannot block solar radiation and cosmic rays, and there are no weather phenomena at the same time. This lack of atmosphere leads to extremely large temperature differences between day and night on the lunar surface. At the same time, due to the vacuum environment on the moon, the coupling effect with temperature and ultraviolet radiation is not conducive to the hardening process of concrete. In this context, lunar buildings are particularly important. However, the current technology lacks equipment for concrete hardening under lunar environment, and conducting on-site research on the moon will cost a lot of money. Summary of the Invention

[0004] In view of the above problems, the present invention provides a concrete hardening device and a working method under a simulated partial lunar environment, which can qualitatively and quantitatively simulate the lunar environment, realize simple and efficient simulation of the partial lunar environment, and the operation of the device is more convenient and the cost of environmental simulation is lower.

[0005] In order to achieve the above object, the present invention is realized by the following technical solutions:

[0006] In a first aspect, the present invention provides a concrete hardening device under a simulated partial lunar environment, including: a lower barrel, an upper cover and a lower cover are arranged at the upper end of the lower barrel, the lower barrel is hermetically connected with the lower cover, the upper cover is tightly adsorbed with the lower barrel through vacuum negative pressure, and a rubber ring is arranged between the lower barrel and the upper cover; an inner container is arranged in the lower barrel, the inner container is divided into an upper cavity and a lower cavity, and a temperature regulating device is arranged in the lower cavity for adjusting the temperature in the upper cavity; a pressure control device is arranged on the upper cover for adjusting the pressure in the upper cavity, so as to realize the simulation of a partial lunar environment; a central control system is further arranged on the outer side wall of the lower barrel and is connected with the temperature regulating device and the pressure control device.

[0007] Further, the pressure control device includes a vacuum pressure gauge and a one-way vacuum valve, and both the vacuum pressure gauge and the one-way vacuum valve are hermetically connected to the upper cover; the one-way vacuum valve is used to allow gas to enter the lower barrel unidirectionally when the negative pressure state is converted to the positive pressure state; a one-way exhaust valve is provided on the upper cover for exhausting the gas in the lower barrel.

[0008] Further, the upper cover is a double-layer metal cover, and a transparent acrylic plate is provided on the upper cover to facilitate observing the hardening state of the concrete in the lower barrel.

[0009] Further, a plurality of limiting devices are evenly arranged on the side of the lower barrel and the lower cover, and the limiting devices are two-in-one metal buckles or duckbill spring buckles.

[0010] Further, a cable outlet is provided at the lower part of the lower barrel, and four pulleys with self-locking functions are provided at the lower end of the lower cover to facilitate the movement of the entire device.

[0011] Further, ultraviolet radiation lamps are provided on the inner side wall of the upper cavity of the inner liner, and the ultraviolet radiation lamps are evenly distributed in a spiral shape. The ultraviolet radiation lamps are connected to the central control system and are connected to an external power supply through the cable outlet.

[0012] Further, the central control system is connected to a temperature ultraviolet sensor and is controlled by a microcomputer, and can sense and regulate the ultraviolet intensity inside the lower barrel in real time.

[0013] Further, the temperature regulating device provided in the lower cavity of the inner liner includes a heating rod and a compressor. The heating rod and the compressor realize the heating or cooling cycle of the internal refrigerant through a pipeline; the heating rod and the compressor are also connected to the central control system.

[0014] Further, an LED display screen is also provided and connected to the outer shell of the central control system. The display screen can display various parameters inside the lower barrel in real time; the LED display screen is placed outside the barrel, and temperature setting program buttons are provided at the lower end of the LED display for adjusting the temperature change inside the barrel; ultraviolet intensity setting program buttons are provided at the lower end of the LED display for adjusting the ultraviolet intensity change inside the barrel.

[0015] In a second aspect, the present invention also provides a working method of a concrete hardening device under a simulated partial lunar environment, including the following steps:

[0016] S1. Set the initial parameters for putting the concrete into the device, including temperature, ultraviolet intensity, and vacuum degree;

[0017] S2. During the concrete preparation process, set the device temperature to the set temperature for preheating or precooling;

[0018] S3. After the concrete is prepared, put the concrete in the steel mold into the device; place the rubber ring on the lower barrel, and then place the upper cover on the rubber ring and align them; open the upper one-way exhaust valve, then turn on the vacuum pump, observe the upper pressure gauge, and after the vacuum degree reaches the requirement, first close the upper one-way exhaust valve, then turn off the vacuum pump, and observe the change of the pressure gauge value.

[0019] S4. After the vacuum degree meets the requirements, turn on the ultraviolet radiation lamp through the central control system and set the ultraviolet intensity to the test value; set the maximum value, minimum value and cycle time of the temperature through the central control system, and the equipment automatically runs the program to simulate the concrete hardening process under a partial lunar environment.

[0020] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0021] The present invention simulates the low-pressure environment of the moon through the pressure control device, simulates the extremely large temperature difference between day and night on the moon with the help of the temperature regulation device, and uses the spirally distributed ultraviolet radiation lamp to simulate the strong ultraviolet environment on the moon, which can qualitatively and quantitatively simulate the lunar environment and simulate the partial hardening environment on the moon. This device has the advantages of simplicity, high efficiency, convenient operation and low cost compared with other devices and methods; it highly restores a partial lunar environment, provides a reliable test platform for the hardening research of concrete under a lunar-like environment, and makes the test data more scientific and valuable for reference; the lower barrel and the lower cover are hermetically connected, the upper cover is tightly adsorbed to the lower barrel through vacuum negative pressure, and the size of the rubber ring can completely cover the side wall of the lower barrel, effectively preventing the intrusion of external environmental gases from two dimensions of negative pressure sealing and rubber ring physical sealing, ensuring the stability of the simulated environment inside the device, and preventing external factors from interfering with the test results.

[0022] The upper cover of the present invention adopts a double-layer metal cover design, which not only enhances the structural strength of the device but also improves the heat insulation performance. The transparent acrylic plate on the cover facilitates the operator to directly and clearly observe the hardening state of the concrete in the lower barrel and timely grasp the test progress. The self-locking pulley at the lower end of the lower cover makes the device easy to move and can be quickly fixed after reaching the designated position.

[0023] The central control system of the present invention is connected to the temperature regulation device, the pressure control device, the ultraviolet radiation lamp and the temperature and ultraviolet sensors, and is controlled by a microcomputer, which can real-time sense and accurately regulate parameters such as the ultraviolet intensity and temperature inside the lower barrel. The LED display screen on the shell of the central control system can display various parameters inside the barrel in real time, and is equipped with program keys for setting temperature and ultraviolet intensity, which is convenient for the operator to flexibly adjust the test parameters to ensure that the simulated environment always meets the test requirements. Description of the Drawings

[0024] The accompanying drawings forming a part of this invention are used to provide a further understanding of the invention. The schematic embodiments and descriptions thereof of the invention are used to explain the invention and do not constitute an improper limitation of the invention.

[0025] Figure 1 It is a diagram of a concrete hardening device for simulating a partial lunar environment of the present invention;

[0026] Figure 2 It is an internal structure diagram of a concrete hardening device for simulating a partial lunar environment of the present invention.

[0027] In the figure: 1, vacuum pressure gauge; 2, upper cover; 3, transparent acrylic plate; 4, rubber ring; 5, LED display screen; 6, central control system; 7, lower barrel; 8, lower cover; 9, one-way vacuum valve; 10, one-way exhaust valve; 11, cable outlet; 12, pulley; 13, ultraviolet radiation lamp; 14, pipeline; 15, heating rod; 16, compressor; 17, inner tank; 18, temperature and ultraviolet sensor. Detailed implementation manners

[0028] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanations of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0029] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the present invention clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof;

[0030] Embodiment 1

[0031] This embodiment provides a concrete hardening device for simulating a partial lunar environment, as Figure 1 - Figure 2As shown in the figure, it includes: a lower barrel 7, with an upper cover 2 and a lower cover 8 provided at the upper end of the lower barrel 7. The lower barrel 7 is hermetically connected to the lower cover 8, and the upper cover 2 is tightly adsorbed to the lower barrel 7 through vacuum negative pressure, preventing the intrusion of external environmental gases and ensuring the stability of the simulated environment inside the device. There is a rubber ring 4 between the lower barrel 7 and the upper cover 2. The inner diameter of the rubber ring 4 is smaller than the diameter of the lower barrel 7, and the outer diameter of the rubber ring 4 is larger than the diameter of the lower barrel 7. The elastic property of the rubber ring 4 enables it to effectively fill the fine gaps between the two, ensuring the airtightness of the device from two dimensions: negative pressure sealing and the rubber ring 4. An inner container 17 is provided in the lower barrel 7. The inner container 17 is divided into an upper chamber and a lower chamber. A temperature adjustment device is provided in the lower chamber for adjusting the temperature in the upper chamber. A pressure control device is provided on the upper cover 2 for adjusting the pressure in the upper chamber, thereby simulating a partial lunar environment. A central control system 6 is also provided on the outer side wall of the lower barrel 7 and is connected to the temperature adjustment device and the pressure control device. By integrating multiple systems such as pressure control, temperature adjustment, and ultraviolet radiation, this device successfully solves the problem that it was difficult to construct a simulated environment containing key elements such as low air pressure, extreme temperature differences, and strong ultraviolet rays when studying the hardening characteristics of concrete in the lunar environment in the past, providing necessary test conditions for related research.

[0032] The materials of the lower barrel 7 and the upper cover 2 are selected as high-strength aluminum alloy materials. Aluminum alloy not only has the advantage of light weight but also has good corrosion resistance and relatively high strength, which can effectively reduce the overall weight of the device and at the same time improve the durability of the device in complex environments.

[0033] Furthermore, the pressure control device includes a vacuum pressure gauge 1 and a one-way vacuum valve 9, and both the vacuum pressure gauge 1 and the one-way vacuum valve 9 are hermetically connected to the upper cover 2. The vacuum pressure gauge 1 can monitor the pressure changes inside the device in real time and accurately, providing intuitive data reference for the operator. The one-way vacuum valve 9 is used to allow gas to enter the lower barrel 7 unidirectionally when the negative pressure state changes to the positive pressure state. It can ensure that the gas enters the lower barrel 7 unidirectionally according to the predetermined direction, avoiding the interference of gas backflow on the simulated environment. A one-way exhaust valve 10 is provided on the upper cover 2 for exhausting the gas in the lower barrel 7. Since the gas only flows unidirectionally, it helps to accelerate the formation of a vacuum environment.

[0034] Furthermore, the upper cover 2 is a metal double-layer cover, and a transparent acrylic plate 3 is provided on the upper cover 2. Specifically, the upper cover 2 adopts a metal double-layer cover design, which not only enhances the structural strength of the device but also improves its heat insulation performance. On the upper cover 2, a transparent acrylic plate 3 is especially provided. Through this acrylic plate, the operator can directly and clearly observe the hardening state of the concrete in the lower barrel 7 and timely grasp the progress of the experiment.

[0035] Furthermore, a plurality of limiting devices are evenly arranged on the side parts of the lower barrel 7 and the lower cover 8. The limiting devices are two-in-one metal buckles or duckbill spring buckles. These limiting devices are easy to operate, can quickly and firmly fix the lower barrel 7 and the lower cover 8, and ensure the stability of the device during operation.

[0036] Furthermore, a cable outlet 11 is arranged at the lower part of the lower barrel 7, and four pulleys 12 with self-locking functions are arranged at the lower end of the lower cover 8. The operator can easily move the device by simply pushing it. When the device moves to the designated position, the device can be stably fixed by activating the self-locking function of the pulleys 12.

[0037] Furthermore, ultraviolet radiation lamps 13 are arranged on the inner side wall of the upper cavity of the inner tank 17, and the ultraviolet radiation lamps 13 are evenly distributed in a spiral shape. This distribution method ensures that ultraviolet rays can irradiate the concrete specimens in the upper cavity comprehensively and evenly. The ultraviolet radiation lamps 13 are connected to the central control system 6 and are connected to an external power supply through the cable outlet 11. The ultraviolet radiation lamps 13 are ultraviolet lamp groups with adjustable wavelengths. Through the central control system 6, the operator can accurately select the required ultraviolet wavelength according to different test requirements to simulate the ultraviolet radiation environment with different wavelengths on the lunar surface. A reflector is installed on the surface of the ultraviolet radiation lamps 13 to reflect the ultraviolet rays onto the concrete specimens, improving the utilization rate of ultraviolet rays and ensuring that all parts of the concrete specimens can receive uniform ultraviolet radiation.

[0038] Furthermore, the central control system 6 is connected to a temperature ultraviolet sensor 18 and is controlled by a microcomputer, which can sense and regulate the ultraviolet intensity and temperature inside the lower barrel 7 in real time. Specifically, the ultraviolet intensity inside the lower barrel 7 is sensed in real time through the temperature ultraviolet sensor 18, and the data is fed back to the central control system 6. The microcomputer in the central control system 6 accurately regulates the working states of the ultraviolet radiation lamps 13 and the temperature regulating device according to the preset program and the data fed back by the sensor, ensuring that the ultraviolet intensity always maintains the set test value.

[0039] Furthermore, the temperature regulating device arranged in the lower cavity of the inner tank 17 includes a heating rod 15 and a compressor 16. The heating rod 15 and the compressor 16 realize the heating or cooling cycle of the internal refrigerant through a pipeline 14, and can quickly and accurately adjust the temperature in the upper cavity whether simulating the hot day or the cold night on the lunar surface. When the heating rod 15 is working, it can quickly convert electrical energy into heat energy, increase the temperature of the refrigerant, and then raise the temperature of the upper cavity. The compressor 16 realizes the refrigeration effect by compressing and condensing the refrigerant, reducing the temperature of the upper cavity. The heating rod 15 and the compressor 16 are also connected to the central control system 6 and are uniformly regulated by the central control system 6 to ensure the accuracy and stability of temperature regulation.

[0040] Furthermore, an LED display screen 5 is also provided and connected to the outer shell of the central control system 6. The display screen can display various parameters in the lower barrel 7 in real time. The LED display screen 5 is placed outside the barrel. At the lower end of the LED display, there are temperature setting program buttons for adjusting the temperature change in the barrel. At the lower end of the LED display, there are ultraviolet intensity setting program buttons for adjusting the ultraviolet intensity change in the barrel. A data recorder is integrated in the central control system 6, which can automatically record all data during the operation of the device, including temperature, pressure, ultraviolet intensity, etc. The data recorder supports multiple data storage formats, facilitating the operator to export and analyze the data.

[0041] Embodiment 2

[0042] This embodiment provides a working method of a concrete hardening device under a simulated partial lunar environment, including the following steps:

[0043] S1. Set the initial parameters of the concrete put into the device, including temperature, ultraviolet intensity, and vacuum degree. Before conducting the experiment, the operator not only needs to determine parameters such as temperature, ultraviolet intensity, and vacuum degree according to the experimental requirements, but also needs to consult a large number of relevant literature materials to understand the variation law of the lunar surface environment parameters. Combining the experimental purpose, formulate a detailed parameter variation plan to ensure that the simulated environment is as close as possible to the actual lunar situation. At the same time, accurately set the initial parameters of the concrete put into the device in the central control system 6, and repeatedly check the set parameters to ensure the accuracy of the parameters;

[0044] S2. During the concrete preparation process, set the device temperature to the set temperature for preheating or precooling; specifically, the operator needs to set the device temperature to the set temperature in advance for preheating or precooling operations. By adjusting the device temperature in advance, ensure that when the concrete is put into the device, it can quickly be in the preset simulated environment, reducing the environmental adaptation time and improving the accuracy and reliability of the experiment;

[0045] S3. After the concrete preparation is completed, put the concrete using a steel mold into the device; place the rubber ring 4 on the lower barrel 7, and then place the upper cover 2 on the rubber ring 4 and align them; open the upper one-way exhaust valve 10, and then turn on the vacuum pump. During the vacuum pumping process, the operator needs to closely observe the numerical change of the upper pressure gauge. After the vacuum degree reaches the requirement, first close the upper one-way exhaust valve 10 to prevent external air from entering the device, and then turn off the vacuum pump. The operator needs to continuously observe the numerical change of the pressure gauge to ensure that the vacuum degree of the device remains stable;

[0046] S4. After the vacuum degree meets the requirements, the operator turns on the ultraviolet radiation lamp 13 through the central control system 6 and sets the ultraviolet intensity to the test value; the operator sets the maximum value, minimum value of the temperature and the cycle time of the temperature through the central control system 6. The device will automatically operate the temperature regulating device and the ultraviolet radiation lamp 13 according to the preset program to simulate the concrete hardening process under a partial lunar environment. During the whole test process, the central control system 6 will continuously collect the data fed back by the temperature ultraviolet sensor 18 and perform real-time regulation on the environmental parameters inside the device to ensure the stability and accuracy of the simulated environment.

[0047] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications or deformations that can be made without creative efforts on the basis of the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A concrete hardening device simulating a partial lunar environment, characterized in that: include: A lower barrel, wherein an upper cover and a lower cover are arranged at the upper end of the lower barrel, the lower barrel is sealed and connected to the lower cover, the upper cover is tightly adsorbed to the lower barrel through vacuum negative pressure, and a rubber ring is arranged between the lower barrel and the upper cover; an inner liner is arranged in the lower barrel, and the inner liner is divided into an upper chamber and a lower chamber, and a temperature regulating device is arranged in the lower chamber for adjusting the temperature in the upper chamber; a pressure control device is arranged on the upper cover for adjusting the pressure in the upper chamber, thereby simulating part of the lunar environment; a central control system is also arranged on the outer wall of the lower barrel, and is connected to the temperature regulating device and the pressure control device.

2. A concrete hardening device for simulating a partial lunar environment as claimed in claim 1, characterized in that: The pressure control device includes a vacuum pressure gauge and a one-way vacuum valve, and the vacuum pressure gauge and the one-way vacuum valve are both sealed with the upper cover; the one-way vacuum valve is used to allow gas to enter the lower barrel in one direction when the negative pressure state is converted into a positive pressure state; the upper cover is provided with a one-way exhaust valve for exhausting the gas in the lower barrel.

3. A concrete hardening device for simulating a partial lunar environment as claimed in claim 1, characterized in that: The upper cover is a metal double-layer cover, and a transparent acrylic plate is provided on the upper cover to facilitate observation of the hardening state of the concrete in the lower barrel.

4. A concrete hardening device for simulating a partial lunar environment as claimed in claim 1, characterized in that: The sides of the lower barrel and the lower cover are also evenly provided with a plurality of limiting devices, and the limiting devices are two-in-one metal buckles or duckbill spring buckles.

5. The concrete hardening device for simulating a partial lunar environment as claimed in claim 1, characterized in that: The lower part of the lower barrel is provided with a cable outlet, and the lower end of the lower cover is provided with four pulleys with a self-locking function to facilitate the movement of the entire device.

6. The concrete hardening device for simulating a partial lunar environment as claimed in claim 1, characterized in that: Ultraviolet radiation lamps are arranged on the inner side wall of the upper cavity of the inner tank, and the ultraviolet radiation lamps are evenly distributed in a spiral shape. The ultraviolet radiation lamps are connected to the central control system and are connected to an external power supply through a cable outlet.

7. The concrete hardening device for simulating a partial lunar environment as claimed in claim 1, characterized in that: The central control system is connected to a temperature UV sensor and is controlled by a microcomputer, and can sense and regulate the UV intensity and temperature inside the lower barrel in real time.

8. The concrete hardening device for simulating a partial lunar environment as claimed in claim 1, characterized in that: The temperature regulating device arranged in the lower cavity of the inner tank comprises a heating rod and a compressor, and the heating rod and the compressor realize the heating or cooling cycle of the internal refrigerant through a pipeline; the heating rod and the compressor are also connected to the central control system.

9. The concrete hardening device for simulating a partial lunar environment as claimed in claim 1, characterized in that: An LED display screen is also arranged and connected on the outer shell of the central control system, and the display screen can display various parameters in the lower barrel in real time; the LED display screen is placed outside the barrel, and a temperature setting program button is arranged at the lower end of the LED display screen, which is used to adjust the temperature change in the barrel; an ultraviolet intensity setting program button is arranged at the lower end of the LED display screen, which is used to adjust the ultraviolet intensity change in the barrel.

10. A method for operating a concrete hardening device in a simulated partial lunar environment according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Setting the initial parameters of the concrete placed in the device, including temperature, UV intensity and vacuum degree; S2. During the concrete preparation process, the device temperature is set to a set temperature for preheating or precooling; S3. After the concrete is prepared, the concrete using the steel mold is placed in the device; the rubber ring is placed on the lower barrel, and then the upper cover is placed on the rubber ring and aligned; Open the upper one-way exhaust valve, then turn on the vacuum pump, and observe the upper pressure gauge. When the vacuum degree reaches the requirement, close the upper one-way exhaust valve first, then turn off the vacuum pump, and observe the changes in the pressure gauge value; S4. After the vacuum degree meets the requirements, turn on the ultraviolet radiation lamp through the central control system and set the ultraviolet intensity to the test value; set the maximum and minimum temperature and the temperature cycle time through the central control system, and the equipment automatically runs the program to simulate the concrete hardening process in part of the lunar environment.

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