Comprehensive environment simulation test device and test method

Abstract

The invention relates to the technical field of environment test, and discloses a comprehensive environment simulation test device and method, the device comprises a vacuum tank, a vacuum unit, a first temperature adjusting mechanism, a second temperature adjusting mechanism and a control system, and an opening at one end of the vacuum tank is provided with a sealing door capable of being opened and closed; the vacuum unit is used for adjusting the vacuum degree in the vacuum tank; the first temperature adjusting mechanism is used for adjusting the internal temperature of the vacuum tank; the second temperature adjusting mechanism is used for lowering the internal temperature of the vacuum tank; a micro-low gravity environment simulation module is arranged in the vacuum tank, and the micro-low gravity environment simulation module is used for driving the test sample to rotate in the first direction while rotating in the axial direction, so that the test sample can be simulated to be tested in a comprehensive environment with high / low temperature alternation, different vacuum degrees and different micro-low gravity factors in a single device; and the cost is saved and the occupied space is small.

Description

Technical Field

[0001] This invention relates to the field of environmental testing technology, and specifically to a comprehensive environmental simulation testing device and testing method. Background Technology

[0002] In recent years, with the increasing demand for space technology and its continuous development, more and more inorganic non-metallic materials are being used in the construction of space bases. This has placed increasingly stringent demands on the performance indicators of inorganic non-metallic materials under the complex space environment. The combined effects of alternating high / low temperatures, vacuum, and microgravity in space significantly impact the curing and forming properties and structural service performance of inorganic non-metallic materials. Conducting thorough environmental simulation tests is a crucial technical step in evaluating the reliability and lifespan of inorganic non-metallic materials.

[0003] Traditional environmental testing devices have relatively limited functions and can only test a limited number of items. When conducting comprehensive environmental simulation tests on inorganic non-metallic materials, it is necessary to conduct tests on multiple environmental testing devices, which is costly and space-consuming. Therefore, there is an urgent need for a comprehensive environmental simulation testing device that is suitable for inorganic non-metallic materials, has a lower cost, and occupies less space. Summary of the Invention

[0004] In view of this, the present invention provides a comprehensive environmental simulation test device and test method to solve the problem of the lack of a comprehensive environmental simulation test device that is suitable for inorganic non-metallic materials, has low cost, and occupies little space.

[0005] In a first aspect, the present invention provides a comprehensive environmental simulation test apparatus, comprising:

[0006] A vacuum container with an opening at one end, and a sealing door that can be opened and closed at the opening;

[0007] A vacuum unit is used to regulate the vacuum level inside the vacuum tank.

[0008] A first temperature regulating mechanism is used to adjust the internal temperature of the vacuum tank;

[0009] The second temperature regulating mechanism is used to lower the internal temperature of the vacuum tank;

[0010] A micro-low gravity environment simulation module is installed inside the vacuum tank. The micro-low gravity environment simulation module is used to carry the test sample and to drive the test sample to rotate around the axial direction and around a first direction. The first direction and the axial direction are perpendicular to each other and located on the same horizontal plane.

[0011] The control system is electrically connected to the vacuum unit, the first temperature regulating mechanism, the second temperature regulating mechanism, and the micro-low gravity environment simulation module.

[0012] The comprehensive environmental simulation test apparatus according to the present invention has at least the following beneficial effects:

[0013] By integrating the vacuum unit, the first temperature regulating mechanism, the second temperature regulating mechanism, and the vacuum chamber into one unit, and installing a micro-low gravity environment simulation module inside the vacuum chamber, the inorganic non-metallic material can be fixed to the micro-low gravity environment simulation module when testing the structural service performance of the test sample. The micro-low gravity environment simulation module drives the inorganic non-metallic material to rotate around its axis at a first standard speed, while simultaneously driving the test sample to rotate around a first direction at a second standard speed. The combined speed vector of the first and second standard speeds results in an acceleration vector on the test sample that is smaller than the gravitational acceleration. Furthermore, the magnitude of the acceleration vector experienced by the test sample can be adjusted by changing the first standard speed. The rotational speed and the second standard rotational speed are used to change the magnitude of the acceleration vector experienced by the test sample, enabling the simulation of more micro-low gravity environments, meeting the test requirements of different space environments, and improving the applicability of the test; and in the process of placing the test sample in the required micro-low gravity environment, the vacuum degree inside the vacuum tank can be adjusted by the vacuum unit, and the internal temperature of the vacuum tank can be adjusted by the first temperature adjustment mechanism and the second temperature adjustment mechanism working together, so that the test sample can be simulated in a comprehensive environment of high / low temperature alternation, different vacuum degrees, and different micro-low gravity factors in space in a single device, saving costs and occupying less space.

[0014] In one optional embodiment, the wall thickness of the vacuum tank is 1.2 times a first calculated wall thickness, the first calculated wall thickness satisfying the following formula:

[0015]

[0016] In the formula, S1 is the first calculated wall thickness, and D B Let P be the inner diameter of the vacuum tank, E be the design external pressure of the vacuum tank, E be the elastic modulus of the material of the vacuum tank, and L be the calculated length of the vacuum tank.

[0017] In one optional embodiment, the sealing door is configured as an elliptical head, with one end of the sealing door facing the vacuum tank in the closed state being configured as a cylindrical straight section and the other end as a rotating elliptical surface. The wall thickness of the sealing door is 1.84 times the second calculated wall thickness, which satisfies the following formula:

[0018]

[0019] In the formula, S1 is the second calculated wall thickness, P is the design external pressure of the vacuum tank, and D c Where σ is the inner diameter of the straight section of the cylinder, [σ] is the allowable stress of the sealing door material, γ is the weld coefficient, and h c C is the height of the inner edge of the protruding part of the sealing door, and C is a constant.

[0020] In one optional embodiment, the inner wall of the vacuum tank is provided with a plurality of reinforcing ribs spaced apart along the axial direction, and the reinforcing ribs are arranged around the circumference.

[0021] In one optional embodiment, the micro-low gravity environment simulation module includes a first frame, a second frame rotatably connected within the first frame, the second frame being driven to rotate about an axial direction by a first driving component; and a clamping part rotatably connected within the second frame, the clamping part being driven to rotate about a first direction by a second driving component, the clamping part being used to clamp and fix the test sample.

[0022] In one optional embodiment, the first drive assembly includes a first motor disposed on the first frame along the second direction, the output end of the first motor is connected to a first worm gear reducer, and the output end of the first worm gear reducer is coaxially connected to the second frame; the axial direction, the first direction, and the second direction are mutually perpendicular.

[0023] And / or, the second drive assembly includes a second motor disposed on the second frame along the second direction, the output end of the second motor is connected to a second worm gear reducer, and the output end of the second worm gear reducer is coaxially connected to the clamping part; the axial direction, the first direction and the second direction are mutually perpendicular.

[0024] In one optional embodiment, the second frame is provided with a first speed sensor, which detects the speed at which the second frame rotates about an axial direction to obtain a first speed, and transmits the first speed to the control system; the control system compares the first speed with a first standard rotational speed to obtain a first offset value, corrects the operating power of the first drive component based on the first offset value, and controls the rotation of the first drive component based on the corrected operating power; the clamping part is provided with a second speed sensor, which detects the speed at which the clamping part rotates about a first direction to obtain a second speed, and transmits the second speed to the control system; the control system compares the second speed with a second standard rotational speed to obtain a second offset value, corrects the operating power of the second drive component based on the second offset value, and controls the rotation of the second drive component based on the corrected operating power;

[0025] And / or, it also includes a force sensor, which is used to detect a first gravity value applied to the test sample and transmit the first gravity value to the control system; the control system compares the first gravity value with a standard micro-low gravity value to obtain a gravity offset value, decomposes the gravity offset value to obtain a first sub-compensated rotational speed about the axial direction and a second sub-compensated rotational speed about the first direction, corrects the operating power of the first drive component according to the first sub-compensated rotational speed, controls the rotation of the first drive component according to the corrected operating power, and corrects the operating power of the second drive component according to the second sub-compensated rotational speed, controls the rotation of the second drive component according to the corrected operating power.

[0026] In one optional embodiment, the first temperature regulating mechanism includes an infrared thermal cage arranged circumferentially around the vacuum tank, and the micro-low gravity environment simulation module is disposed inside the infrared thermal cage.

[0027] And / or, the second temperature regulating mechanism includes a first heat sink module, a second heat sink module, and a liquid nitrogen module. The first heat sink module is disposed on the wall of the vacuum tank, and the liquid nitrogen module is connected to a first pipeline of the first heat sink module and is used to supply liquid nitrogen to the first pipeline. The second heat sink module is disposed on the sealing door, and the liquid nitrogen module is connected to a second pipeline of the second heat sink module and is used to supply liquid nitrogen to the second pipeline.

[0028] In one optional embodiment, the system further includes a chassis, the vacuum unit being disposed within the chassis, a base protruding from one end of the chassis along the axial direction, the vacuum tank being disposed on the upper end of the base, and the axial projection of the vacuum tank falling within the area of ​​the chassis.

[0029] And / or, the vacuum unit includes a vacuum pump that is connected to the interior of the vacuum tank via a third pipeline.

[0030] Secondly, the present invention also provides a testing method applied to the testing apparatus provided in the first aspect, the testing method comprising the following steps:

[0031] The test sample to be tested is installed and fixed in the micro-low gravity environment simulation module, and the sealing door is closed;

[0032] The system inputs the standard temperature value, standard vacuum degree, and standard micro-gravity acceleration value required for the test into the control system; and adjusts the test temperature inside the vacuum chamber according to the standard temperature value through the first temperature adjustment mechanism or the second temperature adjustment mechanism.

[0033] The internal vacuum level of the vacuum tank is adjusted by the vacuum unit according to the standard vacuum level.

[0034] Based on the standard micro-low gravity acceleration value, the micro-low gravity environment simulation module drives the test sample to rotate around the axis at a first standard speed, and drives the stationary non-metallic material sample to rotate around the first direction at a second standard speed.

[0035] According to a test method of the present invention, at least the following beneficial effects are achieved:

[0036] By integrating the vacuum unit, the first temperature regulation mechanism, the second temperature regulation mechanism, and the vacuum chamber into a single unit, and installing a micro-low gravity environment simulation module inside the vacuum chamber, when testing the structural service performance of the test sample, the standard temperature value, standard vacuum degree, and standard micro-low gravity acceleration value required for the test are first input into the control system. The control system can then control the micro-low gravity environment simulation module to rotate the test sample around its axis at a first standard rotational speed, and simultaneously rotate it around its first direction at a second standard rotational speed. The combined rotational speed vector of the first and second standard rotational speeds ensures that the magnitude of the acceleration vector experienced by the test sample (i.e., the standard micro-low gravity acceleration value) is less than the gravitational acceleration. The device can change the magnitude of the acceleration vector experienced by the test sample by altering the first and second standard rotation speeds, enabling the simulation of more micro-low gravity environments, meeting the testing requirements of different space environments, and improving the applicability of the test. Furthermore, during the process of placing the test sample in the required micro-low gravity environment, it can adjust the vacuum level inside the vacuum tank according to different input standard vacuum levels via the vacuum unit, and adjust the internal temperature of the vacuum tank according to different input standard temperature values ​​via the coordinated first and second temperature adjustment mechanisms. This allows for the simulation of test samples in a comprehensive environment of alternating high / low temperatures, different vacuum levels, and different micro-low gravity factors in space within a single device, saving costs and requiring less space. Attached Figure Description

[0037] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 This is a three-dimensional structural diagram of a comprehensive environmental simulation test device according to an embodiment of the present invention;

[0039] Figure 2 for Figure 1 A schematic diagram of the sealed door in the closed state.

[0040] Figure 3 This is a partial cross-sectional structural schematic diagram of an embodiment of the present invention;

[0041] Figure 4 This is a partial structural diagram of an embodiment of the present invention;

[0042] Figure 5 This is a three-dimensional structural diagram of the micro-low gravity environment simulation module in an embodiment of the present invention;

[0043] Figure 6 for Figure 5 A schematic diagram of the decomposed structure;

[0044] Figure 7 This is a cross-sectional schematic diagram of the reinforcing rib in an embodiment of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 100 - Vacuum container, 110 - Sealed door, 111 - Observation window, 120 - Reinforcing rib;

[0047] 200-Micro-low gravity environment simulation module, 210-First frame, 211-U-shaped groove, 220-Second frame, 230-Clamping part, 241-First motor, 242-First worm gear reducer, 251-Second motor, 252-Second worm gear reducer;

[0048] 310 - First heat sink module; 320 - Second heat sink module;

[0049] 410-Infrared Heat Cage;

[0050] 500 - Chassis, 510 - Base. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] In the description of this embodiment, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this embodiment. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] In the description of this embodiment, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment according to the specific circumstances.

[0054] The following is combined Figures 1 to 7 The following describes embodiments of the present invention.

[0055] According to a first aspect of the present invention, a comprehensive environmental simulation test apparatus is provided, comprising a vacuum tank 100, a vacuum unit, a first temperature regulating mechanism, a second temperature regulating mechanism, and a control system. The vacuum tank 100 has an opening at one end, and a sealing door 110 is provided at the opening for opening and closing. The vacuum unit is used to regulate the vacuum level inside the vacuum tank 100. The first temperature regulating mechanism is used to increase the internal temperature of the vacuum tank 100. The second temperature regulating mechanism is used to decrease the internal temperature of the vacuum tank 100. A micro-low gravity environment simulation module 200 is provided inside the vacuum tank 100. The micro-low gravity environment simulation module 200 is used to carry a test sample. In this embodiment, the test sample is preferably an inorganic non-metallic material sample, and it is used to drive the inorganic non-metallic material sample to rotate about an axial direction and about a first direction, the first direction and the axial direction being perpendicular to each other and located on the same horizontal plane. The control system is electrically connected to the vacuum unit, the first temperature regulating mechanism, the second temperature regulating mechanism, and the micro-low gravity environment simulation module 200. It is understood that the axial direction, the first direction, and the second direction mentioned herein refer to... Figure 1 The axial direction, the first direction, and the second direction are mutually perpendicular. The axial direction refers to the axial direction of the vacuum tank 100, and the first direction and the axial direction are located on the same horizontal plane.

[0056] The experimental apparatus of this embodiment integrates a vacuum unit, a first temperature regulating mechanism, a second temperature regulating mechanism, and a vacuum chamber 100 into one unit. A micro-low gravity environment simulation module 200 is installed inside the vacuum chamber 100. When testing the structural service performance of inorganic non-metallic material samples, the inorganic non-metallic material samples can be fixed in the micro-low gravity environment simulation module 200. The micro-low gravity environment simulation module 200 simultaneously rotates the inorganic non-metallic material sample around its axis at a first standard rotational speed and around a first direction at a second standard rotational speed. The combined rotational speed vector of the first and second standard rotational speeds results in an acceleration vector magnitude less than the gravitational acceleration experienced by the inorganic non-metallic material sample. Furthermore, by changing the first and second standard rotation speeds, the magnitude of the acceleration vector experienced by the inorganic non-metallic material sample can be altered, enabling the simulation of more micro-low gravity environments, meeting the experimental requirements of different space environments, and improving the applicability of the experiment. In the process of placing the inorganic non-metallic material sample in the required micro-low gravity environment, the vacuum level inside the vacuum tank 100 can be adjusted by the vacuum unit, and the internal temperature of the vacuum tank 100 can be adjusted by the first and second temperature adjustment mechanisms working together. This allows for the simulation of inorganic non-metallic material samples in a comprehensive environment of alternating high / low temperatures, different vacuum levels, and different micro-low gravity factors in space within a single device, saving costs and occupying less space.

[0057] It should be noted that, in specific applications, the vacuum unit, the first temperature regulation mechanism, the second temperature regulation mechanism, and the micro-low gravity environment simulation module 200 of this embodiment can be selected for use, or only some of them can be used, to meet different test requirements. For example, only the vacuum unit and the first temperature regulation mechanism can be activated to simulate the test of inorganic non-metallic material samples in a combined environment of high vacuum and high temperature; or only the vacuum unit and the second temperature regulation mechanism can be activated to simulate the test of inorganic non-metallic material samples in a combined environment of high vacuum and low temperature.

[0058] It should be noted that during the rotation of the inorganic non-metallic material sample around the axial direction and around the first direction, a centrifugal force will be generated respectively. The two centrifugal forces are opposite to the direction of the gravitational force generated by the Earth, and the two centrifugal forces can cancel out part of the gravity in the corresponding direction. Therefore, the combined speed vector of the first standard speed and the second standard speed makes the magnitude of the acceleration vector of the inorganic non-metallic material sample smaller than the gravitational acceleration.

[0059] Specifically, the vacuum tank 100 has a threaded hole on its end face facing the closed sealing door 110 along the axial direction. A locking screw is threaded onto the sealing door 110, and the locking screw matches the threaded hole. When the sealing door 110 is closed, the locking screw and the threaded hole are aligned axially, and the locking screw is threaded onto the threaded hole, thereby sealing the opening of the vacuum tank 100 and ensuring the accuracy of the test.

[0060] like Figure 1 and Figure 3 As shown, specifically, the sealed door 110 is provided with an observation window 111 so that the test personnel can observe the inorganic non-metallic material sample inside the vacuum tank 100 during the test.

[0061] In some embodiments, the wall thickness of the vacuum tank 100 is 1.2 times a first calculated wall thickness, the first calculated wall thickness satisfying the following formula:

[0062]

[0063] In the formula, S1 is the first calculated wall thickness, and D B Let P be the inner diameter of the vacuum tank 100, P be the design external pressure of the vacuum tank 100 (specifically, in this embodiment, P is selected as 0.1 MPa), E be the elastic modulus of the material of the vacuum tank 100, and L be the calculated length of the vacuum tank 100. By increasing the first calculated wall thickness by 1.2 times to obtain the wall thickness of the vacuum tank 100, the effects of steel plate deviation, forming thinning, and polishing thinning can be fully considered. This allows for a reduction in the thickness of the vacuum tank 100 while meeting the comprehensive environmental simulation test requirements for inorganic non-metallic material samples. Consequently, the effective internal space of the vacuum tank 100 can be expanded without increasing the overall size of the vacuum tank 100, thereby effectively reducing the manufacturing cost of the test device in this embodiment and reducing the space occupied by the test device in this embodiment.

[0064] In some embodiments, the sealing door 110 is configured as an elliptical end cap. When closed, one end of the sealing door 110 facing the vacuum tank 100 is configured as a cylindrical straight section, and the other end is configured as a rotating elliptical surface. The wall thickness of the sealing door 110 is 1.84 times a second calculated wall thickness, which satisfies the following formula:

[0065]

[0066] In the formula, S1 is the second calculated wall thickness, P is the design external pressure of the vacuum tank 100, and in this embodiment, P is selected as 0.1 MPa. c[σ] is the inner diameter of the straight section of the cylinder; [σ] is the allowable stress of the sealing door 110 material. In this embodiment, the material of the sealing door 110 is selected as 0Cr18Ni9, therefore [σ] is selected as 90MPa; γ is the weld coefficient, in this embodiment γ is selected as 0.6; h c C is the height of the inner edge of the protruding part of the sealing door 110; C is a constant, specifically 0.760346; by increasing the second calculated wall thickness by 1.84 times to obtain the wall thickness of the sealing door 110, the influence of steel plate deviation and the stamping thinning of the end cap can be fully considered. This allows for a reduction in the thickness of the sealing door 110 while meeting the comprehensive environmental simulation test requirements of inorganic non-metallic material samples. Consequently, the effective internal space of the vacuum tank 100 can be expanded without increasing the overall size of the vacuum tank 100, thereby effectively reducing the manufacturing cost of the test device in this embodiment and reducing the space occupied by the test device in this embodiment.

[0067] In a specific application, a first elliptical head is welded and fixed to one end of the vacuum tank 100 away from the sealing door 110 along the axial direction. The wall thickness of the first elliptical head is 1.84 times the second calculated wall thickness.

[0068] In some embodiments, the inner wall of the vacuum tank 100 is provided with a plurality of reinforcing ribs 120 spaced axially, the reinforcing ribs 120 being arranged around the circumference. The reinforcing ribs 120 increase the rigidity of the cylindrical vacuum tank 100, thereby effectively preventing the vacuum tank 100 from becoming unstable and increasing the allowable external pressure of the vacuum tank 100 while reducing the wall thickness of the vacuum tank 100.

[0069] Specifically, the cross-sectional torque of stiffener 120 is greater than the calculated moment of inertia of the cross-section. The calculated moment of inertia of the cross-section is calculated using the following steps:

[0070] First, the coefficient B is calculated using the following formula:

[0071]

[0072] In the formula, P is the design external pressure of vacuum tank 100, and D H S1 is the outer diameter of vacuum tank 100, A is the cross-sectional area of ​​reinforcing rib 120, L is the calculated length of vacuum tank 100, and B is a coefficient.

[0073] Based on the value of coefficient B obtained from the above formula and the design temperature, the value of ε is obtained from the table, and the calculated moment of inertia of the cross section is calculated using the following formula:

[0074]

[0075] In the formula, ε is the strain of the vacuum tank at 100°, and D... HLet S1 be the outer diameter of the vacuum tank 100, S1 be the first calculated wall thickness, A be the cross-sectional area of ​​the reinforcing rib 120, and L be the calculated length of the vacuum tank 100. By ensuring that the cross-sectional torque of the reinforcing rib 120 is greater than the calculated moment of inertia of the cross-section, the reinforcing rib 120 sufficiently increases the rigidity of the cylindrical vacuum tank 100, ensuring that the vacuum tank 100 is effectively prevented from becoming unstable while reducing the wall thickness, thereby increasing the allowable external pressure and effective internal space of the vacuum tank 100.

[0076] like Figure 5 and Figure 6 As shown, in some embodiments, the microgravity environment simulation module 200 includes a first frame 210, within which a second frame 220 is rotatably connected. The second frame 220 is driven to rotate about an axial direction by a first driving component. A clamping part 230 is rotatably connected within the second frame 220. The clamping part 230 is driven to rotate about a first direction by a second driving component. The clamping part 230 is used to clamp and fix an inorganic non-metallic material sample. By clamping, the inorganic non-metallic material sample is fixed to the clamping part 230, effectively preventing it from detaching from the clamping part 230 during rotation about the axial direction and the first direction. Simultaneously, the first and second driving components drive the inorganic non-metallic material sample to rotate about the axial direction and the first direction respectively, making the two rotational power sources independent of each other. This allows for selectively changing the first standard rotational speed about the axial direction and the second standard rotational speed about the first direction, thus enabling more flexible simulation of a wider range of microgravity environments. Meanwhile, the micro-low gravity environment simulation module 200 of this embodiment simulates a micro-low gravity environment through mechanical rotation, which satisfies the requirement to carry out and implement micro-low gravity environment simulation experiments in a vacuum tank 100 under thermal vacuum conditions.

[0077] Specifically, the first drive assembly includes a first motor 241 disposed along the second direction on the first frame 210. The output end of the first motor 241 is connected to a first worm gear reducer 242, and the output end of the first worm gear reducer 242 is coaxially connected to the second frame 220. By arranging the first motor 241 along the second direction, the axial dimension of the first drive assembly is reduced, thereby reducing the axial dimension of the micro-low gravity environment simulation module 200, thus effectively reducing the space occupied by the test device in this embodiment.

[0078] Specifically, the first frame 210 is provided with a U-shaped groove 211 at its upper end along the second direction, the second frame 220 is rotatably connected to the U-shaped groove 211, and the first motor 241 is located at the lower end of the first worm gear reducer 242 along the second direction. By embedding the second frame 220 and the first motor 241 in the U-shaped groove 211, the space occupied by the micro-low gravity environment simulation module 200 inside the vacuum tank 100 can be reduced more effectively, thereby making the test device of this embodiment more miniaturized.

[0079] Specifically, the second drive assembly includes a second motor 251 disposed along the second direction on the second frame 220. The output end of the second motor 251 is connected to a second worm gear reducer 252, and the output end of the second worm gear reducer 252 is coaxially connected to the clamping part 230. By arranging the second motor 251 along the second direction, the size of the second drive assembly along the first direction is reduced, thereby reducing the size of the micro-low gravity environment simulation module 200 along the first direction, thus effectively reducing the space occupied by the test device in this embodiment.

[0080] In some embodiments, the second frame 220 is provided with a first speed sensor, which is used to detect the speed of the second frame 220 rotating about the axial direction to obtain a first speed, and transmit the first speed to the control system; the control system compares the first speed with a first standard rotational speed to obtain a first offset value, corrects the working power of the first drive component according to the first offset value, and controls the rotation of the first drive component according to the corrected working power of the first drive component to ensure that the second frame 220 rotates accurately about the axial direction at the first standard rotational speed; the clamping part 230 is provided with a second speed sensor, which is used to detect the speed of the clamping part 230 rotating about the axial direction at the first standard rotational speed. The rotational speed in one direction is detected to obtain a second speed, which is then transmitted to the control system. The control system compares the second speed with a second standard rotational speed to obtain a second offset value. Based on the second offset value, the operating power of the second drive component is corrected, and the rotation of the second drive component is controlled according to the corrected operating power. This ensures that the clamping part 230 rotates precisely around the axial direction at the second standard rotational speed. This ensures that the inorganic non-metallic material sample rotates precisely around the axial direction at the first standard rotational speed and around the first direction at the second standard rotational speed for a long time. Consequently, it ensures that the inorganic non-metallic material sample is kept in the required micro-low gravity environment for testing for a long time, thus ensuring the accuracy of the test.

[0081] It should be noted that when the second frame 220 rotates about the axial direction at the first standard speed, the first offset value is zero, meaning that there is no need to correct the operating power of the first drive assembly. When the clamping part 230 rotates about the first direction at the second standard speed, the second offset value is zero, meaning that there is no need to correct the operating power of the second drive assembly.

[0082] Specifically, the first standard rotational speed refers to the centrifugal force generated during the rotation of the inorganic non-metallic material sample, combined with the acceleration due to gravity, at 9.80 m / s². 2 The partial gravitational force generated cancels out the resistance, placing the inorganic non-metallic material sample under the required low-gravity environment (i.e., subjected to the standard low-gravity acceleration value required for the experiment). The rotational speed of the inorganic non-metallic material sample is the component of its rotational speed around the axial direction. The second standard rotational speed refers to the centrifugal force generated during the rotation of the inorganic non-metallic material sample combined with the Earth's gravitational acceleration of 9.80 m / s². 2 The generated partial gravity is offset, so that the inorganic non-metallic material sample is under the required micro-low gravity environment conditions (i.e., subjected to the standard micro-low gravity acceleration value required for the test), and the rotational speed of the inorganic non-metallic material sample is the component rotational speed around the first direction.

[0083] It is understandable that the first and second standard rotational speeds are obtained in the following way: the total acceleration generated by the inorganic non-metallic material sample during its rotational motion around the axial direction and the first direction is obtained by comparing the Earth's gravitational acceleration with the standard micro-gravity acceleration. The first standard rotational speed around the axial direction and the second standard rotational speed around the first direction are obtained by decomposing the total acceleration, the radius of rotation of the inorganic non-metallic material sample around the axial direction, and the radius of rotation of the inorganic non-metallic material sample around the first direction.

[0084] Considering that the experimental area is affected by factors such as different latitudes, longitudes, and altitudes, the Earth's gravitational acceleration in that area is not necessarily 9.80 m / s². 2This results in the inorganic non-metallic material sample not receiving the required standard micro-low gravity acceleration value even when rotated at a first standard speed around the axis or at a second standard speed around the first direction. To address this issue, the testing device further includes a force sensor. This force sensor detects the first gravity value experienced by the inorganic non-metallic material sample and transmits this value to the control system. The control system compares the first gravity value with the standard micro-low gravity value to obtain a gravity offset value. Based on this gravity offset value, it decomposes the first compensated speed around the axis and the second compensated speed around the first direction. The system then corrects the operating power of the first drive component based on the first compensated speed and controls its rotation accordingly. Similarly, it corrects the operating power of the second drive component based on the second compensated speed and controls its rotation accordingly. This allows for compensation of the first and second standard speeds based on external factors, ensuring that the inorganic non-metallic material sample is accurately maintained in the required micro-low gravity environment for extended periods during testing, thus ensuring the accuracy of the experiment.

[0085] It should be noted that when the first gravity value is the same as the standard microgravity value, the gravity offset value is zero.

[0086] Specifically, the standard micro-low gravity value refers to the gravity generated when a stepless non-metallic material sample is subjected to the standard micro-low gravity acceleration required for the test.

[0087] Specifically, the control system is equipped with a display that can show the first speed detected by the first speed sensor, the second speed detected by the second speed sensor, and the first gravity value detected by the force sensor, so that the test personnel can monitor them intuitively.

[0088] It is understood that the first compensated rotational speed around the axial direction and the second compensated rotational speed around the first direction are obtained by decomposing the gravity offset value as follows: the acceleration offset value is obtained based on the gravity offset value and the weight of the inorganic non-metallic material sample, and the first compensated rotational speed around the axial direction and the second compensated rotational speed around the first direction are obtained by decomposing the acceleration offset value, the rotation radius of the inorganic non-metallic material sample around the axial direction and the rotation radius of the inorganic non-metallic material sample around the first direction.

[0089] like Figure 2 and Figure 3As shown, in some embodiments, the second temperature regulating mechanism includes a first heat sink module 310, a second heat sink module 320, and a liquid nitrogen module. The first heat sink module 310 is disposed on the wall of the vacuum tank 100, and the liquid nitrogen module is connected to a first pipeline of the first heat sink module 310 and is used to supply liquid nitrogen to the first pipeline. The second heat sink module 320 is disposed on the sealing door 110, and the liquid nitrogen module is connected to a second pipeline of the second heat sink module 320 and is used to supply liquid nitrogen to the second pipeline. By simultaneously supplying liquid nitrogen to the first pipeline of the first heat sink module 310 and the second pipeline of the second heat sink module 320 for heat exchange and cooling, all locations inside the vacuum tank 100 are uniformly cooled, resulting in a basically uniform temperature throughout the vacuum tank 100. This better simulates a "cold" background environment inside the vacuum tank 100, improving the accuracy of detection.

[0090] Specifically, the output end of the liquid nitrogen module is equipped with a liquid nitrogen valve.

[0091] like Figure 3 and Figure 4 As shown, in some embodiments, the first temperature regulating mechanism includes an infrared heat cage 410 arranged circumferentially within the vacuum tank 100, and the micro-low gravity environment simulation module 200 is disposed within the infrared heat cage 410. By activating the infrared heat cage 410, infrared radiation heating is generated at various positions along the circumference of the vacuum tank 100, ensuring uniform heating at all locations inside the vacuum tank 100, thus better simulating a "thermal" background environment inside the vacuum tank 100 and improving the accuracy of detection.

[0092] like Figure 1 and Figure 4 As shown, in some embodiments, the test apparatus further includes a housing 500, with the vacuum unit disposed within the housing 500. A base 510 protrudes from one axial end of the housing 500, and a vacuum tank 100 is disposed on the upper end of the base 510. The axial projection of the vacuum tank 100 falls within the area of ​​the housing 500. By placing the vacuum tank 100 and the vacuum unit respectively in the inner and outer layers of the housing 500, the volume of the test apparatus in this embodiment is further reduced while still satisfying the requirement for controlling the vacuum level inside the vacuum tank 100, thereby making the test apparatus of this embodiment more miniaturized.

[0093] Specifically, the vacuum unit includes a vacuum pump, which is connected to the interior of the vacuum tank 100 via a third pipeline. The vacuum pump is activated based on the required vacuum level within the vacuum tank 100, providing evacuation equipment to achieve the required vacuum level. More specifically, this embodiment also measures the vacuum level of the vacuum chamber using a vacuum measuring component and controls the operation of the vacuum pump based on the real-time measured vacuum level.

[0094] According to a second aspect of the present invention, a testing method is also provided, comprising the comprehensive environmental simulation testing apparatus for inorganic non-metallic materials provided in the first aspect of the present invention; the testing method comprises the following steps:

[0095] The inorganic non-metallic material sample to be tested is installed and fixed in the micro-low gravity environment simulation module 200, and the sealing door 110 is closed.

[0096] The system inputs the standard temperature value, standard vacuum degree, and standard micro-gravity acceleration value required for the test into the control system; and adjusts the test temperature inside the vacuum tank 100 according to the standard temperature value through the first temperature adjustment mechanism or the second temperature adjustment mechanism.

[0097] The internal vacuum level of the vacuum tank 100 is adjusted by the vacuum unit according to the standard vacuum level.

[0098] Based on the standard micro-low gravity acceleration value, the micro-low gravity environment simulation module 200 drives the inorganic non-metallic material sample to rotate around the axis at a first standard speed, and drives the motionless non-metallic material sample to rotate around the first direction at a second standard speed.

[0099] The experimental method of this embodiment integrates the vacuum unit, the first temperature regulating mechanism, the second temperature regulating mechanism, and the vacuum tank 100 into one unit. The vacuum tank 100 is equipped with a micro-low gravity environment simulation module 200. When testing the structural service performance of the inorganic non-metallic material sample, the standard temperature value, standard vacuum degree, and standard micro-low gravity acceleration value required for the test are first input into the control system. The control system can then control the micro-low gravity environment simulation module 200 to rotate the inorganic non-metallic material sample around the axis at a first standard rotational speed, while simultaneously rotating it around the first direction at a second standard rotational speed. The combined rotational speed vector of the first and second standard rotational speeds results in the magnitude of the acceleration vector experienced by the inorganic non-metallic material sample (i.e., the standard micro-low gravity acceleration value). The acceleration vector of the inorganic non-metallic material sample is less than the acceleration due to gravity, and the magnitude of the acceleration vector can be changed by altering the first and second standard rotation speeds. This allows for the simulation of more micro-low gravity environments, meeting the experimental requirements of different space environments and improving the applicability of the experiments. Furthermore, during the process of placing the inorganic non-metallic material sample in the required micro-low gravity environment, the vacuum level inside the vacuum tank 100 can be adjusted by the vacuum unit according to different input standard vacuum levels, and the internal temperature of the vacuum tank 100 can be adjusted by the first and second temperature adjustment mechanisms in coordination according to different input standard temperature values. This allows for the simulation of inorganic non-metallic material samples in a comprehensive environment of alternating high / low temperatures, different vacuum levels, and different micro-low gravity factors in space within a single device, saving costs and occupying less space.

[0100] It is understood that, based on the aforementioned standard micro-low gravity acceleration value, the micro-low gravity environment simulation module 200 drives the inorganic non-metallic material sample to rotate around the axial direction at a first standard rotational speed, and drives the stationary non-metallic material sample to rotate around the first direction at a second standard rotational speed. Specifically, this includes:

[0101] The total acceleration generated by the inorganic non-metallic material sample during its rotational motion around the first and second directions is obtained by comparing the Earth's gravitational acceleration with the standard micro-low gravity acceleration.

[0102] Obtain the radius of rotation of the inorganic non-metallic material sample about a first direction and the radius of rotation of the inorganic non-metallic material sample about a second direction;

[0103] The first standard rotational speed around the first direction and the second standard rotational speed around the second direction are obtained by decomposing the total acceleration, the radius of rotation of the inorganic non-metallic material sample around the first direction, and the radius of rotation of the inorganic non-metallic material sample around the second direction.

[0104] The first driving component drives the inorganic non-metallic material sample to rotate around the axial direction at a first standard speed, while the second driving component drives the non-metallic material sample to rotate around the first direction at a second standard speed.

[0105] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and all such modifications and variations fall within the scope defined by the invention.

Claims

1. A comprehensive environmental simulation test device, characterized in that, include: A vacuum container (100) has an opening at one end, and a sealing door (110) is provided at the opening for opening and closing. A vacuum unit is used to adjust the vacuum level inside the vacuum tank (100); A first temperature regulating mechanism is used to adjust the internal temperature of the vacuum tank (100); The second temperature regulating mechanism is used to lower the internal temperature of the vacuum tank (100); A micro-low gravity environment simulation module (200) is installed inside the vacuum tank (100). The micro-low gravity environment simulation module (200) is used to carry the test sample and to drive the test sample to rotate around the axial direction and around the first direction. The first direction and the axial direction are perpendicular to each other and located on the same horizontal plane. The control system is electrically connected to the vacuum unit, the first temperature regulating mechanism, the second temperature regulating mechanism, and the micro-low gravity environment simulation module (200).

2. The comprehensive environmental simulation test device according to claim 1, characterized in that, The wall thickness of the vacuum vessel (100) is 1.2 times the first calculated wall thickness, which satisfies the following formula: In the formula, S1 is the first calculated wall thickness, and D B Let P be the inner diameter of the vacuum tank (100), P be the design external pressure of the vacuum tank (100), E be the elastic modulus of the material of the vacuum tank (100), and L be the calculated length of the vacuum tank (100).

3. The comprehensive environmental simulation test device according to claim 2, characterized in that, The sealing door (110) is configured with an elliptical end cap. When the sealing door (110) is in the closed state, one end facing the vacuum tank (100) is configured as a cylindrical straight section, and the other end is configured as a rotating elliptical surface. The wall thickness of the sealing door (110) is 1.84 times the second calculated wall thickness, which satisfies the following formula: In the formula, S1 is the second calculated wall thickness, P is the design external pressure of the vacuum tank (100), and D... c [σ] is the inner diameter of the straight section of the cylindrical part, [σ] is the allowable stress of the sealing door (110) material, γ is the weld coefficient, and h c C is the height of the inner edge of the protruding part of the sealing door (110), and C is a constant.

4. The comprehensive environmental simulation test device according to claim 3, characterized in that, The inner wall of the vacuum tank (100) is provided with a plurality of reinforcing ribs (120) spaced apart along the axial direction, and the reinforcing ribs (120) are arranged around the circumference.

5. The comprehensive environmental simulation test device according to claim 1, characterized in that, The micro-low gravity environment simulation module (200) includes a first frame (210), a second frame (220) is rotatably connected inside the first frame (210), the second frame (220) is driven to rotate about the axis by a first driving component; a clamping part (230) is rotatably connected inside the second frame (220), the clamping part (230) is driven to rotate about a first direction by a second driving component, and the clamping part (230) is used to clamp and fix the test sample.

6. The comprehensive environmental simulation test device according to claim 5, characterized in that, The first drive assembly includes a first motor (241) disposed along the second direction on the first frame (210), the output end of the first motor (241) is connected to a first worm gear reducer (242), and the output end of the first worm gear reducer (242) is coaxially connected to the second frame (220); the axial direction, the first direction and the second direction are perpendicular to each other; And / or, the second drive assembly includes a second motor (251) disposed on the second frame (220) along the second direction, the output end of the second motor (251) is connected to a second worm gear reducer (252), the output end of the second worm gear reducer (252) is coaxially connected to the clamping part (230); the axial direction, the first direction and the second direction are perpendicular to each other.

7. A comprehensive environmental simulation test device according to claim 5 or 6, characterized in that, The second frame (220) is provided with a first speed sensor, which is used to detect the speed of the second frame (220) rotating about the axial direction to obtain a first speed, and transmit the first speed to the control system; The control system compares the first speed with the first standard rotation speed to obtain a first offset value, corrects the working power of the first drive component based on the first offset value, and controls the rotation of the first drive component based on the corrected working power of the first drive component; the clamping part (230) is provided with a second speed sensor, which is used to detect the speed at which the clamping part (230) rotates around the first direction to obtain a second speed, and transmits the second speed to the control system; The control system compares the second speed with the second standard rotational speed to obtain a second offset value, corrects the operating power of the second drive component based on the second offset value, and controls the rotation of the second drive component based on the corrected operating power of the second drive component. And / or, it also includes a force sensor for detecting a first gravitational force value acting on the test sample and transmitting the first gravitational force value to the control system; The control system compares the first gravity value with the standard micro-low gravity value to obtain a gravity offset value. Based on the gravity offset value, it decomposes the first sub-compensated rotational speed around the axial direction and the second sub-compensated rotational speed around the first direction. Based on the first sub-compensated rotational speed, it corrects the working power of the first drive component and controls the rotation of the first drive component based on the corrected working power. Based on the second sub-compensated rotational speed, it corrects the working power of the second drive component and controls the rotation of the second drive component based on the corrected working power.

8. The comprehensive environmental simulation test device according to claim 1, characterized in that, The first temperature regulating mechanism includes an infrared heat cage (410) arranged circumferentially inside the vacuum tank (100), and the micro-low gravity environment simulation module (200) is arranged inside the infrared heat cage (410); And / or, the second temperature regulating mechanism includes a first heat sink module (310), a second heat sink module (320), and a liquid nitrogen module. The first heat sink module (310) is disposed on the wall of the vacuum tank (100). The liquid nitrogen module is connected to a first pipeline of the first heat sink module (310) and is used to supply liquid nitrogen to the first pipeline. The second heat sink module (320) is disposed on the sealing door (110). The liquid nitrogen module is connected to a second pipeline of the second heat sink module (320) and is used to supply liquid nitrogen to the second pipeline.

9. The comprehensive environmental simulation test device according to claim 1, characterized in that, It also includes a chassis (500), the vacuum unit is disposed inside the chassis (500), a base (510) is protruding from one end of the chassis (500) along the axial direction, the vacuum tank (100) is disposed on the upper end of the base (510), and the projection of the vacuum tank (100) along the axial direction falls within the range of the chassis (500); And / or, the vacuum unit includes a vacuum pump that is connected to the interior of the vacuum tank (100) via a third pipeline.

10. A test method, applied to the test apparatus as described in any one of claims 1 to 9, characterized in that, The experimental method includes the following steps: The test sample to be tested is installed and fixed in the micro-low gravity environment simulation module (200), and the sealing door (110) is closed; Input the standard temperature value, standard vacuum degree, and standard micro-gravity acceleration value required for the test into the control system; adjust the test temperature inside the vacuum tank (100) according to the standard temperature value through the first temperature adjustment mechanism or the second temperature adjustment mechanism; The vacuum level inside the vacuum tank (100) is adjusted by the vacuum unit according to the standard vacuum level. Based on the standard micro-low gravity acceleration value, the micro-low gravity environment simulation module (200) drives the test sample to rotate around the axis at a first standard speed and drives the non-metallic material sample to rotate around the first direction at a second standard speed.

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