CN-122017128-A - Comprehensive environment simulation test device and test method

CN122017128ACN 122017128 ACN122017128 ACN 122017128ACN-122017128-A

Abstract

The invention relates to the technical field of environmental tests and discloses a comprehensive environmental simulation test device and a test method, wherein the device comprises a vacuum tank, a vacuum unit, a first temperature adjusting mechanism, a second temperature adjusting mechanism and a control system, wherein a sealing door is arranged at an opening at one end of the vacuum tank in an openable manner; the vacuum unit is used for adjusting the vacuum degree inside the vacuum tank; the first temperature regulating mechanism is used for regulating and raising the internal temperature of the vacuum tank; the invention realizes that the test sample can be simulated in a single device in the comprehensive environment of high/low temperature alternation, different vacuum degrees and different micro-low gravity factors of the space, saves the cost and has smaller occupied space.

Inventors

JI XIAO
MA ZHONGCHENG
LIU YAOJUN
WU HAO
GAO CHUNYONG
LIU YUN
GUO JUNHUA

Assignees

中国建筑材料科学研究总院有限公司
中国建材集团有限公司

Dates

Publication Date: 20260512
Application Date: 20241111

Claims (10)

1. An integrated environmental simulation test device, comprising: One end of the vacuum tank (100) is provided with an opening, and a sealing door (110) is arranged at the opening in an openable way; a vacuum unit for adjusting the vacuum degree inside the vacuum tank (100); a first temperature adjustment mechanism for adjusting an internal temperature of the vacuum tank (100); a second temperature adjustment mechanism for down-regulating an internal temperature of the vacuum tank (100); The micro-low gravity environment simulation module (200) is arranged in the vacuum tank (100), and the micro-low gravity environment simulation module (200) is used for bearing a test sample and driving the test sample to rotate around an axial direction and rotate around a first direction, wherein the first direction and the axial direction are mutually perpendicular and are positioned on the same horizontal plane; And the control system is electrically connected with the vacuum unit, the first temperature adjusting mechanism, the second temperature adjusting mechanism and the micro-low gravity environment simulation module (200).
2. The comprehensive environmental simulation test device according to claim 1, wherein the wall thickness of the vacuum tank (100) is 1.2 times the first calculated wall thickness, the first calculated wall thickness satisfying the following formula: Wherein S 1 is a first calculated wall thickness, D B is an inner diameter of the vacuum tank (100), P is an external design pressure of the vacuum tank (100), E is a material elastic modulus of the vacuum tank (100), and L is a calculated length of the vacuum tank (100).
3. The comprehensive environmental simulation test device according to claim 2, wherein the sealing door (110) is provided as an elliptical head, one end of the sealing door (110) in a closed state facing the vacuum tank (100) is provided as a cylindrical straight section, the other end is provided as a rotating elliptical face, the wall thickness of the sealing door (110) is 1.84 times as large as a second calculated wall thickness, and the second calculated wall thickness satisfies the following formula: Wherein S 1 is the second calculated wall thickness, P is the design external pressure of the vacuum tank (100), D c is the inner diameter of the cylindrical straight section, [ sigma ] is the allowable stress of the material of the sealing door (110), gamma is the welding line coefficient, h c is the inner edge height of the protruding part of the sealing door (110), and C is a constant.
4. A comprehensive environmental simulation test device according to claim 3, wherein a plurality of reinforcing ribs (120) are arranged on the inner wall of the vacuum tank (100) at intervals along the axial direction, and the reinforcing ribs (120) are arranged around one circle.
5. The comprehensive environment simulation test device according to claim 1, wherein the micro-low gravity environment simulation module (200) comprises a first frame (210), a second frame (220) is rotationally connected to the first frame (210), the second frame (220) is rotationally driven by a first driving assembly to rotate around an axial direction, a clamping portion (230) is rotationally connected to the second frame (220), the clamping portion (230) is rotationally driven by a second driving assembly to rotate around a first direction, and the clamping portion (230) is used for clamping and fixing a test sample.
6. The comprehensive environment simulation test device according to claim 5, wherein the first driving assembly comprises a first motor (241) arranged on the first frame (210) along a second direction, the output end of the first motor (241) is connected with a first worm gear reducer (242), and the output end of the first worm gear reducer (242) is coaxially connected with the second frame (220); And/or the second driving assembly comprises a second motor (251) arranged on the second frame (220) along a second direction, the output end of the second motor (251) is connected with a second worm gear reducer (252), the output end of the second worm gear reducer (252) is coaxially connected with the clamping part (230), and the axial direction, the first direction and the second direction are mutually perpendicular.
7. The comprehensive environment simulation test device according to claim 5 or 6, wherein the second frame (220) is provided with a first speed sensor, the first speed sensor is used for detecting the speed of the second frame (220) rotating around the axial direction to obtain a first speed and transmitting the first speed to the control system, the control system compares the first speed with a first standard rotating speed to obtain a first offset value, corrects the working power of the first driving assembly according to the first offset value and controls the first driving assembly to rotate according to the working power of the corrected first driving assembly, and the clamping part (230) is provided with a second speed sensor, the second speed sensor is used for detecting the speed of the clamping part (230) rotating around the first direction to obtain a second speed and transmitting the second speed 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-compensation rotating speed around the axial direction and a second sub-compensation rotating speed around the first direction, corrects the working power of the first driving component according to the first sub-compensation rotating speed, controls the first driving component to rotate according to the corrected working power of the first driving component, corrects the working power of the second driving component according to the corrected working power of the second driving component, and controls the second driving component to rotate according to the corrected working power of the second driving component.
8. The comprehensive environmental simulation test device according to claim 1, wherein the first temperature adjustment mechanism comprises an infrared thermal cage (410) circumferentially arranged in the vacuum tank (100), and the micro-low gravity environmental simulation module (200) is arranged in the infrared thermal cage (410); And/or the second temperature adjusting 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 the surrounding wall of the vacuum tank (100), the liquid nitrogen module is connected with a first pipeline of the first heat sink module (310) and is used for conveying liquid nitrogen to the first pipeline, the second heat sink module (320) is arranged on the sealing door (110), and the liquid nitrogen module is connected with a second pipeline of the second heat sink module (320) and is used for conveying liquid nitrogen to the second pipeline.
9. The comprehensive environment simulation test device according to claim 1, further comprising a case (500), wherein the vacuum unit is arranged in the case (500), a base (510) is convexly arranged at one axial end of the case (500), the vacuum tank (100) is arranged at the upper end of the base (510), and the projection of the vacuum tank (100) along the axial direction is within the range of the case (500); and/or the vacuum unit comprises a vacuum pump which is communicated with the interior of the vacuum tank (100) through a third pipeline.
10. A test method applied to a test device according to any one of claims 1 to 9, characterized in that the test method comprises the steps of: installing and fixing a test sample to be tested on 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 by a test to the control system, and adjusting the test temperature inside the vacuum tank (100) through the first temperature adjusting mechanism or the second temperature adjusting mechanism according to the standard temperature value; Adjusting the internal vacuum degree of the vacuum tank (100) by the vacuum unit according to the standard vacuum degree; And driving the test sample to rotate around the axial direction at a first standard rotating speed by the micro-low gravity environment simulation module (200) according to the standard micro-low gravity acceleration value, and driving the motionless nonmetallic material sample to rotate around the first direction at a second standard rotating speed.

Description

Comprehensive environment simulation test device and test method Technical Field The invention relates to the technical field of environmental tests, in particular to a comprehensive environment simulation test device and a test method. Background In recent years, space demands are increasing, space technology is developing continuously, and more inorganic nonmetallic materials are also applied to the construction of space bases, so that more stringent requirements are put forward on various performance indexes of the inorganic nonmetallic materials under complex space environments. The multi-factor comprehensive environment such as space high/low temperature alternation, vacuum, microgravity and the like can obviously influence the curing forming performance and structural service performance of the inorganic nonmetallic material, and the development of a full environment simulation test is a key technical link for evaluating the reliability and service life of the inorganic nonmetallic material. The functions of the traditional environment test device are relatively single, the items for testing are fewer, when the comprehensive environment simulation test is carried out on the inorganic nonmetallic materials, the test is required to be carried out on a plurality of environment test devices, the cost is high, the occupied space is large, and therefore, the comprehensive environment simulation test device suitable for the inorganic nonmetallic materials, low in cost and small in occupied space is needed. Disclosure of Invention In view of the above, the invention provides a comprehensive environment simulation test device and a test method, which are used for solving the problem of lack of a comprehensive environment simulation test device which is applicable to inorganic nonmetallic materials, has low cost and occupies small space. In a first aspect, the present invention provides an integrated environmental simulation test apparatus comprising: One end of the vacuum tank is provided with an opening, and a sealing door is arranged at the opening in an openable manner; the vacuum unit is used for adjusting the vacuum degree in the vacuum tank; a first temperature adjusting mechanism for adjusting an internal temperature of the vacuum tank; A second temperature adjusting mechanism for adjusting down the internal temperature of the vacuum tank; the low gravity environment simulation module is arranged in the vacuum tank, is used for bearing a test sample, and is used for driving the test sample to rotate around the axial direction and rotate around the first direction, and the first direction and the axial direction are mutually perpendicular and are positioned on the same horizontal plane; And the control system is electrically connected with the vacuum unit, the first temperature adjusting mechanism, the second temperature adjusting mechanism and the micro-low gravity environment simulation module. The comprehensive environment simulation test device provided by the invention has at least the following beneficial effects: The vacuum test device comprises a vacuum unit, a first temperature regulating mechanism, a second temperature regulating mechanism and a vacuum tank, wherein the vacuum unit, the first temperature regulating mechanism and the second temperature regulating mechanism are integrated into a whole, a micro-low gravity environment simulation module is arranged in the vacuum tank, inorganic nonmetallic materials can be fixed in the micro-low gravity environment simulation module when the structural service performance of a test sample is tested, the micro-low gravity environment simulation module drives the inorganic nonmetallic materials to rotate around the axial direction at a first standard rotating speed and simultaneously drives the test sample to rotate around the first direction at a second standard rotating speed, the combined rotating speed vector of the first standard rotating speed and the second standard rotating speed enables the acceleration vector size of the test sample to be smaller than the gravity acceleration, the acceleration vector size of the test sample can be changed through changing the first standard rotating speed and the second standard rotating speed, the simulation of more micro-low gravity environments is realized, the test requirements on different space environments are met, the test applicability of the test sample is improved, and in the process of placing the test sample in the required micro-low gravity environment, the vacuum test device can be adjusted through the vacuum unit, the vacuum test device can be adjusted in the vacuum space in a single vacuum tank, the different space can be realized, the space can be adjusted in a small space in a cooperated mode, and the vacuum test device is saved, and the test cost is not occupied by the comprehensive. In an alternative embodiment, the wall thickness of the vacuum tank is 1.2 times the first calculated wal