EP-4741803-A1 - COMPREHENSIVE ENVIRONMENT SIMULATION TEST APPARATUS AND TEST METHOD

EP4741803A1EP 4741803 A1EP4741803 A1EP 4741803A1EP-4741803-A1

Abstract

The present invention relates to the technical field of environmental testing, and discloses a comprehensive environment simulation test apparatus and a test method, the apparatus comprises a vacuum tank, a vacuum unit, a first temperature regulating mechanism, a second temperature regulating mechanism, and a control system, wherein a sealing door is provided at an opening of one end of the vacuum tank in an openable and closable manner; the vacuum unit is used for adjusting a vacuum degree inside the vacuum tank; the first temperature regulating mechanism is used for increasing an internal temperature of the vacuum tank; the second temperature regulating mechanism is used for reducing the internal temperature of the vacuum tank; a micro-low gravity environment simulation module is arranged in the vacuum tank, wherein the micro-low gravity environment simulation module is configured to drive a test sample to rotate around an axial direction and rotate around a first direction. The present invention realizes that the comprehensive environment for testing of a test sample in a space with alternating high/low temperature, different vacuum degrees and different micro-low gravity factors can be simulated in a single apparatus, thus saving cost and occupying less space.

Inventors

ZHI, Xiao
MA, ZHONGCHENG
LIU, Yaojun
WU, HAO
Gao, Chunyong
LIU, YUN
GUO, JUNHUA

Assignees

China Building Materials Academy Co., Ltd.
China National Building Material Group Co., Ltd.

Dates

Publication Date: 20260513
Application Date: 20250826

Claims (10)

A comprehensive environment simulation test apparatus, characterized by comprising: a vacuum tank (100), wherein one end of the vacuum tank (100) is provided with an opening, and a sealing door (110) is provided at the opening in an openable and closable manner; a vacuum unit for adjusting a vacuum degree inside the vacuum tank (100); a first temperature regulating mechanism for increasing an internal temperature of the vacuum tank (100); a second temperature regulating mechanism for reducing the internal temperature of the vacuum tank (100); a micro-low gravity environment simulation module (200) arranged in the vacuum tank (100), wherein the micro-low gravity environment simulation module (200) is configured to carry a test sample and drive the test sample to rotate around an axial direction and rotate around a first direction, the first direction and the axial direction are perpendicular to each other and located in the same horizontal plane; a control system 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).
The comprehensive environment simulation test apparatus according to claim 1, characterized in that a wall thickness of the vacuum tank (100) is 1.2 times a first calculated wall thickness, and the first calculated wall thickness satisfies the following formula: S 1 = 1.25 D B P E ⋅ L D B 0.4 where S 1 is the first calculated wall thickness, D B is an inner diameter of the vacuum tank (100), P is a designed external pressure of the vacuum tank (100), E is an elastic modulus of the material of the vacuum tank (100), and L is a calculated length of the vacuum tank (100).
The comprehensive environment simulation test apparatus according to claim 2, characterized in that the sealing door (110) is provided as an elliptical sealing head, wherein one end of the sealing door (110) in a closed state facing the vacuum tank (100) is provided as a cylindrical straight section, and the other end of the sealing door (100) is provided as a revolving elliptical surface, and a wall thickness of the sealing door (110) is 1.84 times a second calculated wall thickness, and the second calculated wall thickness satisfies the following formula: S 2 = 1.7 PD c 4 σ γ − P ⋅ D c 2 h c + C where S 2 is the second calculated wall thickness, P is the designed external pressure of the vacuum tank (100), D c is an inner diameter of the cylindrical straight section, [σ] is an allowable stress of the material of the sealing door (110), γ is a weld coefficient, h c is an inner edge height of a protruding part of the sealing door (110), and C is a constant.
The comprehensive environment simulation test apparatus according to claim 3, characterized in that the inner wall of the vacuum tank (100) is provided with a plurality of reinforcing ribs (120) at intervals in the axial direction, and each of the reinforcing ribs (120) is arranged along a circumference of the inner wall of the vacuum tank (100).
The comprehensive environment simulation test apparatus according to claim 1, characterized in that the micro-low gravity environment simulation module (200) comprises a first frame (210), a second frame (220) is rotatably connected to the first frame (210), and the second frame (220) is configured to be driven to rotate around the axial direction by a first driving assembly; a clamping member (230) is rotatably connected to the second frame (220), the clamping member (230) is configured to be driven to rotate around the first direction by a second driving assembly, and the clamping member (230) is configured to clamp and fix the test sample.
The comprehensive environment simulation test apparatus according to claim 5, characterized in that the first driving assembly comprises a first motor (241) arranged along a second direction on the first frame (210), an output end of the first motor (241) is connected with a first worm gear reducer (242), and an output end of the first worm gear reducer (242) is coaxially connected to the second frame (220); any two of the axial direction, the first direction and the second direction are perpendicular to each other; and/or the second driving assembly comprises a second motor (251) arranged along a second direction on the second frame (220), an output end of the second motor (251) is connected with a second worm gear reducer (252), and an output end of the second worm gear reducer (252) is coaxially connected to the clamping member (230); any two of the axial direction, the first direction and the second direction are perpendicular to each other.
The comprehensive environment simulation test apparatus according to claim 5 or 6, characterized in that the second frame (220) is provided with a first speed sensor, and the first speed sensor is configured to detect a speed of rotation of the second frame (220) around the axial direction to obtain a first speed and transmit the first speed to the control system; the control system is configured to compare the first speed with a first standard rotational speed to obtain a first offset value, correct a working power of the first driving assembly according to the first offset value, and control the rotation of the first driving assembly according to the corrected working power of the first driving assembly; the clamping member (230) is provided with a second speed sensor configured to detect a speed of rotation of the clamping member (230) around the first direction to obtain a second speed and transmit the second speed to the control system; the control system is configured to compare the second speed with a second standard rotational speed to obtain a second offset value, correct a working power of the second driving assembly according to the second offset value, and control the rotation of the second driving assembly according to the corrected working power of the second driving assembly; and/or the apparatus further comprises a force sensor configured to detect a first gravity value that the test sample is subjected to and transmit the first gravity value to the control system; the control system is configured to compare the first gravity value with a standard micro-low gravity value to obtain a gravity offset value, perform decomposition calculation to obtain a first component compensation rotational speed around the axial direction and a second component compensation rotational speed around the first direction according to the gravity offset value, correct a working power of the first driving assembly according to the first component compensation rotational speed, control the rotation of the first driving assembly according to the corrected working power of the first driving assembly, correct a working power of the second driving assembly according to the second component compensation rotational speed, and control the rotation of the second driving assembly according to the corrected working power of the second driving assembly.
The comprehensive environment simulation test apparatus according to claim 1, characterized in that the first temperature regulating mechanism comprises an infrared thermal cage (410) circumferentially arranged in the vacuum tank (100), and the micro-low gravity environment simulation module (200) is arranged in the infrared thermal cage (410); and/or the second temperature regulating mechanism comprises a first heat sink module (310), a second heat sink module (320), and a liquid nitrogen module, wherein the first heat sink module (310) is arranged on a surrounding 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 configured to supply liquid nitrogen to the first pipeline; the second heat sink module (320) is arranged on the sealing door (110), the liquid nitrogen module is connected to a second pipeline of the second heat sink module (320) and is configured to supply liquid nitrogen to the second pipeline.
The comprehensive environment simulation test apparatus according to claim 1, further comprising a cabinet (500), wherein the vacuum unit is arranged in the cabinet (500), one end of the cabinet (500) along the axial direction is provided with a protruding base (510), the vacuum tank (100) is arranged on top of the base (510), and the projection of the vacuum tank (100) in the axial direction falls within the range of the cabinet (500); and/or the vacuum unit comprises a vacuum pump in communication with the interior of the vacuum tank (100) through a third pipeline.
A test method applied to the test apparatus according to any one of claims 1 to 9, characterized in that the test method comprises the following steps: installing and fixing the test sample to be tested onto the micro-low gravity environment simulation module (200) and closing the sealing door (110); inputting a standard temperature value, a standard vacuum degree and a standard micro-low gravity acceleration value required for a test into the control system; adjusting a test temperature inside the vacuum tank (100) by the first temperature regulating mechanism or the second temperature regulating mechanism according to the standard temperature value; adjusting an internal vacuum degree of the vacuum tank (100) by the vacuum unit according to the standard vacuum degree; driving the test sample to rotate around the axial direction at a first standard rotational speed and driving the test sample made of inorganic non-metallic material to rotate around the first direction at a second standard rotational speed by the micro-low gravity environment simulation module (200) according to the standard micro-low gravity acceleration value.

Description

TECHNICAL FIELD The present invention relates to the technical field of environmental testing, and specifically relates to a comprehensive environmental simulation test apparatus and a test method. BACKGROUND In recent years, with the increasing demand for space exploration and the continuous development of space technology, more and more inorganic non-metallic materials are applied in the construction of space bases. Therefore, more stringent requirements are put forward for various performance indicators of inorganic non-metallic materials subject to complex space environments. The comprehensive environment of alternating high/low temperature, vacuum, microgravity and other factors in space will significantly affect the solidification formability and structural service performance of inorganic non-metallic materials. Carrying out sufficient environmental simulation tests is the key technical link for evaluating the reliability and lifespan of inorganic non-metallic materials. Traditional environmental test apparatuses have relatively single functions and few items that can be tested. When comprehensive environmental simulation tests are carried out on inorganic non-metallic materials, tests need to be carried out on multiple environmental test apparatuses, which is costly and occupies a large space. Therefore, there is an urgent need for a comprehensive environment simulation test apparatus suitable for testing inorganic non-metallic materials with low cost and small space occupation. SUMMARY In view of this, the present invention provides a comprehensive environment simulation test apparatus and a test method to solve the problem that there is a lack of a comprehensive environment simulation test apparatus suitable for testing inorganic non-metallic materials with low cost and small space occupation. According to a first aspect, the present invention provides a comprehensive environment simulation test apparatus that comprises: a vacuum tank, wherein one end of the vacuum tank is provided with an opening, and a sealing door is provided at the opening in an openable and closable manner;a vacuum unit for adjusting a vacuum degree inside the vacuum tank;a first temperature regulating mechanism for increasing an internal temperature of the vacuum tank;a second temperature regulating mechanism for reducing the internal temperature of the vacuum tank;a micro-low gravity environment simulation module arranged in the vacuum tank, wherein the micro-low gravity environment simulation module is configured to carry a test sample and drive the test sample to rotate around an axial direction and rotate around a first direction, the first direction and the axial direction are perpendicular to each other and located in the same horizontal plane;a control system electrically connected to the vacuum unit, the first temperature regulating mechanism, the second temperature regulating mechanism, and the micro-low gravity environment simulation module. The comprehensive environment simulation test apparatus according to the present invention has at least the following beneficial effects: By integrating the vacuum unit, the first temperature regulating mechanism, the second temperature regulating mechanism and the vacuum tank in a single apparatus, and arranging a micro-low gravity environment simulation module in the vacuum tank, when the structural service performance of the test sample is tested, the inorganic non-metallic material can be fixed onto the micro-low gravity environment simulation module, and the micro-low gravity environment simulation module can drive the inorganic non-metallic material to rotate around the axial direction at a first standard rotational speed while driving the test sample to rotate around the first direction at a second standard rotational speed. The resultant vector of rotational speed synthesized by the first standard rotational speed and the second standard rotational speed makes the acceleration vector that the test sample is subjected to have a magnitude less than the gravity acceleration. The magnitude of the acceleration vector that the test sample is subjected to can be changed by changing the first standard rotational speed and the second standard rotational speed, thereby realizing the simulation of more micro-low gravity environments, meeting the test requirements for different space environments, and improving the applicability of the test. Moreover, in the process of keeping the test sample placed in the required micro-low gravity environment, not only can the vacuum degree inside the vacuum tank be adjusted by the vacuum unit, but also the internal temperature of the vacuum tank can be adjusted by the first temperature regulating mechanism and the second temperature regulating mechanism cooperatively, so that the comprehensive environment for testing of a test sample in a space with alternating high/low temperature, different vacuum degrees and different micro-low gravity factor