CN115041248B

CN115041248B - Multi-factor environment simulation system for vibration under ultra-high temperature condition

Info

Publication number: CN115041248B
Application number: CN202210654974.6A
Authority: CN
Inventors: 吴护林; 李忠盛; 周富; 黄安畏; 丛大龙; 周峰; 吴道勋; 罗明波; 孙彩云; 王晓辉; 吴永鹏; 黄波
Original assignee: Southwest Institute of Technology and Engineering of China South Industries Group
Current assignee: Southwest Institute of Technology and Engineering of China South Industries Group
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2024-02-27
Anticipated expiration: 2042-06-10
Also published as: CN115041248A

Abstract

The invention provides a multi-factor environment simulation system vibrating under an ultra-high temperature condition, which comprises a test box main body (100), wherein the test box main body (100) comprises a vibration subsystem (10), an internal heat source simulation subsystem (20), a greenhouse environment simulation subsystem (30) and an air flow simulation subsystem (40); the vibration subsystem (10) comprises a vibration table body (11), a horizontal sliding table (12), a power amplifier, a cooling unit (32), a heat insulation pad and a controller; the flat wall type internal heat source subsystem (20) comprises a vibration connector (21), a high-temperature heater (22), a fixed lamp bracket (23) and a water cooling platform (24); the vibration coupler (21) includes an upper mounting plate (211), an annular side wall (212), a lower mounting plate (213), and support ribs (214). The system integrates temperature, humidity, vibration, airflow, internal heat sources and other multi-environment factors, and can truly and effectively simulate the influence of the multi-environment factors on equipment products.

Description

Multi-factor environment simulation system for vibration under ultra-high temperature condition

Technical Field

The invention relates to the technical field of environment simulation tests, in particular to a multi-factor environment simulation system for vibration under an ultra-high temperature condition.

Background

In the process of using, storing and the like, the equipment products are affected by interaction of various natural environments and mechanical environments, so that the performance and the effect of the equipment products are reduced or even lost, and various accidents are even caused. Factors such as temperature, humidity, vibration, airflow, internal heat environment and the like have great influence on the performance and service life of equipment products, and the equipment products are easy to corrode and age due to long-term exposure to high temperature, high humidity, high salt mist and other atmospheric environments, and meanwhile, the fatigue crack is further accelerated to expand due to stress concentration generated in the use process, so that the structure is damaged; meanwhile, equipment products are subjected to the effects of vibration, air flow and the like, and the structure is deformed, damaged and the like, so that the equipment products lose the original performance and effect, and the equipment products fail and even cause safety accidents.

The environmental test is an important means for checking, screening and researching the environmental adaptability of equipment products and materials thereof, exposing the environmental failure mode of the equipment products and evaluating the storage or service life of the equipment products, and provides technical support and guarantee for demonstration, development, production, use and the like of the equipment products. However, for a long time, an effective test method and test equipment are lacking, the influence research on equipment products by natural environment and mechanical environment is insufficient, the traditional natural environment test period is long, quick evaluation and judgment are difficult to realize, the existing laboratory test method for simulating mechanical properties still has the defects of incomplete simulation factors, deficient comprehensive environmental factors and the like, so that the influence of key environmental factors on the performance and service life of the equipment products in the whole period can not be really and effectively simulated and tested at present, only rough evaluation can be carried out, the difference between the result and the result under the actual working condition is large, and potential safety hazards in the actual use process easily occur.

Therefore, how to truly and rapidly simulate the comprehensive influence of multi-factor environments such as temperature, humidity, vibration, airflow, internal heat source and the like of equipment products in the actual use and storage process, so that the performance and the service life of the equipment products in the actual use working condition are truly and effectively judged, and the method is the key point and the difficulty of the current research.

Disclosure of Invention

Aiming at the problems existing in the prior art, the invention aims to provide the multi-factor environment simulation system for vibration under the ultra-high temperature condition, which integrates temperature, humidity, vibration, airflow, internal heat source and other environmental factors, and can truly and effectively simulate the influence of the comprehensive environmental factors on equipment products in actual use conditions, thereby rapidly and accurately judging the service performance and service life of the equipment products in the real environment.

The aim of the invention is achieved by the following technical scheme:

a multi-factor environment simulation system for vibration under ultra-high temperature condition is characterized in that: including the test box main part, its characterized in that: the test box main body comprises a vibration subsystem, a flat wall type internal heat source subsystem, a greenhouse environment simulation subsystem and an air flow simulation subsystem;

the vibration subsystem is used for simulating vibration environment factors under the working condition of equipment and comprises a vibration table body, a horizontal sliding table, a power amplifier, a cooling unit, a heat insulation pad and a controller;

The flat wall type internal heat source subsystem comprises a vibration connector, a high-temperature heater, a fixed lamp bracket and a water cooling platform; the vibration coupler is of an integrated structure and comprises an upper mounting plate, an annular side wall, a lower mounting plate and supporting ribs, wherein a through hole is formed in the middle of the upper mounting plate and the middle of the lower mounting plate, the bottom surface of the upper mounting plate is fixedly connected with the top surface of the lower mounting plate through the annular side wall, the upper mounting plate, the annular side wall and the central axis of the lower mounting plate are collinear, a plurality of supporting ribs are uniformly arranged on the outer ring of the annular side wall around the central axis of the outer ring, and the supporting ribs are respectively fixedly connected with the upper mounting plate and the lower mounting plate; the high-temperature heater is arranged in a cavity formed by the upper mounting plate, the lower mounting plate and the annular side wall and comprises a high-temperature-resistant fixing plate, lamp tube clamps and heating lamp tubes, wherein the two ends of the upper end face of the high-temperature-resistant fixing plate are respectively fixedly provided with one lamp tube clamp, a plurality of heating lamp tubes are uniformly arranged in the middle of the upper end face of the high-temperature-resistant fixing plate and between the two lamp tube clamps and are mutually parallel, the two ends of the heating lamp tubes are respectively fixed by the lamp tube clamps at the two ends, and one end of each heating lamp tube penetrates through the high-temperature-resistant fixing plate and is positioned in the cavity at the lower side of the high-temperature-resistant fixing plate; the annular side wall is positioned at the lower side of the high-temperature-resistant fixed disc and symmetrically provided with a plurality of square through holes around the central axis of the annular side wall, the square through holes are in different positions with the supporting ribs, the fixed lamp bracket comprises supporting rods and supporting trusses, the supporting rods correspond to the square through holes, two ends of each supporting rod respectively penetrate through the two mutually symmetrical square through holes and are fixedly connected with the supporting trusses, and the part of each supporting rod positioned in the cavity is fixedly connected with the lower end face of the high-temperature-resistant fixed disc; the upper end face of the water cooling platform is fixedly connected with the lower end face of the lower mounting plate, a plurality of cooling pipes are uniformly arranged in the water cooling platform, and the lower end face of the water cooling platform is fixedly connected with the vibrating table; the annular side wall inner wall evenly sets up the middle insulating layer of inside insulating layer and annular side wall outer wall evenly parcel, upper portion mounting disc upper end and support rib outer wall evenly set up outside insulating layer, parcel flexible heat insulating sheath between bracing piece and the square through-hole, set up the bottom heat insulating board in the cavity between water-cooling platform and the bracing piece, bottom heat insulating board is parallel and bottom heat insulating board is all around with inside heat insulating layer inner wall fixed connection with upper portion mounting disc.

And the simulation system further comprises a comprehensive control system, and is used for controlling a controller of the vibration subsystem, the internal heat source simulation subsystem, the greenhouse environment simulation subsystem, the air flow simulation subsystem and the like to perform work, data control and data acquisition.

The temperature and humidity environment subsystem comprises an air conditioning unit, a cooling unit (the same cooling unit as that of the vibration subsystem) and a humidity conditioning unit; the air conditioning unit comprises an air heating device, an air cooling device and an air circulating device; the cooling unit is a refrigeration compressor; the humidity adjusting unit comprises a humidifying system and a dehumidifying system; the temperature and humidity of the air in the main body (mainly a testing working chamber) of the testing box are regulated through the refrigerating compressor, the air heating device, the air circulating device and the humidity regulating unit, and then the treated air flows through the air circulating device (which can adopt fan circulation), so that repeated forced circulation is formed, and the temperature and humidity balance regulation is carried out, thereby achieving the purpose of simulating real working conditions.

The air flow simulation subsystem comprises a long-axis fan, fan blades, an adjustable air duct and a frequency converter, wherein the long-axis fan is arranged on one side wall of the main body of the test box, and an output shaft of the long-axis fan is positioned in the main body of the test box (mainly a test working chamber) and is fixedly connected with the fan blades positioned in the adjustable air duct; the adjustable air duct is positioned in the test working chamber; the frequency converter is arranged on the main body of the test box and used for adjusting the rotating speed of the long-axis fan; the fan blade is driven to rotate by the long-axis fan to adjust the flow speed of the airflow; meanwhile, the air flow environment of the power cabin under the use condition is simulated by adjusting the position and the direction of the air duct.

Further optimizing, the vibrating table body comprises a support, a magnetic pole assembly, a driving assembly, a damping part, a supporting and guiding system, a shield and a vibrating table top;

the magnetic pole component is arranged at the lower part of the middle of the support;

the driving assembly comprises a driving coil and a moving coil framework, the moving coil framework is arranged on the upper side of the middle part of the magnetic pole assembly, and the driving coil is wound on the moving coil framework;

the vibration isolation device adopts an air spring and is used for isolating the whole vibration of the vibration table body;

the supporting and guiding system comprises a first guiding device and a second guiding device, wherein the first guiding device is arranged on the upper side of the magnetic pole assembly and positioned on the outer ring of the moving coil framework, comprises rollers and U-shaped springs and is used for ensuring good waveform of the vibrating table top, small distortion and small transverse vibration; the second guide device is a hydrostatic bearing and is positioned in the middle of the magnetic pole component at the lower side of the moving coil framework;

the shield comprises a first shield and a second shield, the first shield is arranged on the outer ring of the moving coil framework and positioned on the upper side of the magnetic pole component, and the second shield is arranged on the lower side of the magnetic pole component;

the vibration table top is positioned on the upper side of the movable coil framework.

The magnetic pole assembly comprises a lower polar plate, a magnetic cylinder ring, an upper polar plate, a middle magnetic pole, a lower exciting coil and an upper exciting coil, wherein the magnetic cylinder ring is positioned between the lower polar plate and the upper polar plate, the middle magnetic pole is positioned in the magnetic cylinder ring, and the central axes of the middle magnetic pole, the lower polar plate, the upper polar plate and the magnetic cylinder ring are collinear; the inner side of the middle part of the magnetic cylinder ring (namely, one side close to the middle magnetic pole) protrudes, a lower exciting coil is arranged at the lower side of the protruding part, an upper exciting coil is arranged at the upper part of the protruding part, and the lower exciting coil and the upper exciting coil lamination winding adopt a double-coil lap winding structure; through the double magnetic circuit structure, a more stable annular magnetic field is provided, the leakage magnetic field intensity of the table top is effectively reduced, the defect of uneven cooling of the inner layer winding and the outer layer winding of the single-wire shaft type winding exciting coil is overcome, the cooling uniformity of the exciting coil winding is ensured, the cooling effect is further improved, and the high temperature of the vibrating table is avoided.

Preferably, the air springs are vibration-isolated by using 4 groups of 8.

And the horizontal sliding table is further optimized by adopting a T-shaped static pressure movable system and is used for bearing the vibration table body, and comprises a wallboard component, a connector, a horizontal table top, a T-shaped static pressure guide rail, an oil source and a sliding table base.

And the power amplifier is further optimized, a sine pulse width modulation digital power amplifier is adopted, a low-voltage signal input by the control instrument is amplified and restored into an original signal through a digital circuit, and then the original signal is output to a moving coil circuit of the vibration table body to push the vibration table surface to move.

Further optimizing, wherein the upper end face of the upper mounting plate is provided with a workpiece to be tested, and the central axis of the workpiece to be tested is collinear with the central axis of the upper mounting plate; the diameter of the through hole of the lower mounting plate is larger than that of the through hole of the upper mounting plate.

And the high-temperature-resistant fixing disc is further optimized, the high-temperature-resistant fixing disc sequentially comprises a first ceramic layer, a lamp holder middle heat-insulating layer and a second ceramic layer from top to bottom, the central axes of the first ceramic layer, the lamp holder middle heat-insulating layer and the second ceramic layer are collinear with the central axis of the annular side wall, the diameters of the first ceramic layer and the second ceramic layer are smaller than the inner diameter of the annular side wall, and the outer wall of the lamp holder middle heat-insulating layer is flexibly connected with the inner wall of the annular side wall. The arrangement of the first ceramic layer and the second ceramic layer is adopted, firstly, infrared rays radiated by the heating lamp tube arranged on the upper side of the first ceramic layer are reflected, so that heat is effectively accumulated on the upper side of the high-temperature-resistant fixed disc (namely the first ceramic layer), rapid temperature rise of a workpiece to be tested is realized, meanwhile, the temperature of the lower side of the high-temperature-resistant fixed disc (namely the second ceramic layer) is effectively reduced, and the influence of high temperature on a non-heating area is avoided; secondly, the ceramic laminate can prevent deformation, so that inaccurate test results and even safety accidents caused by the heated deformation of the high-temperature-resistant fixing disc in the high-temperature heating process are avoided. Adopt lighting fixture middle part insulating layer, firstly with first ceramic layer, ceramic bottom surface layer cooperation, further gather the heat that the heating fluorescent tube produced in high temperature resistant fixed disk (i.e. first ceramic layer) upside to realize that upside heating zone is fast to be warmed up, avoid the downside non-heating zone to receive high temperature influence, secondly through the flexonics of lighting fixture middle part insulating layer and annular lateral wall, avoid vibration of vibration connector to influence high temperature heater (specifically heating fluorescent tube), thereby keep vibration and heating not each other influence, treat the work piece and shake +thermal coupling again.

Preferably, the thickness of the first ceramic layer and the second ceramic layer is 4-6 mm, and the thickness of the heat insulation layer in the middle of the lamp holder is 8-12 mm.

The heating lamp tube is further optimized, a double-hole tube structure is adopted, the whole heating lamp tube is of an L-shaped structure, the cross section of the heating lamp tube is of an infinity-shaped structure, and the number of the heating lamp tubes is not less than 5; the part of the heating lamp tube, which is positioned on the upper side of the high-temperature resistant fixed disc (namely the first ceramic layer), is provided with a high infrared short wave quartz radiator so as to generate radiation short waves for heating; the part of the heating lamp tube, which is positioned at the lower side of the high-temperature-resistant fixed disc, is connected with a high-temperature wire, and one end of the high-temperature wire, which is far away from the heating lamp tube, sequentially penetrates through the inner heat insulation layer, the annular side wall, the middle heat insulation layer and the outer heat insulation layer and is connected with the outer wall power supply device.

Preferably, the length of the high infrared short wave quartz radiator (namely the length of the heating effective area) is 200-300 mm.

The heat dissipation device is further optimized, so that the heat dissipation of the cavity at the lower side of the high-temperature-resistant fixed disc (namely the second ceramic layer) is further realized, and the problem that the test result is inaccurate and even safety accidents occur due to the high temperature of the cavity at the lower side of the high-temperature-resistant fixed disc (namely the second ceramic layer) is avoided; the annular side wall is positioned at the lower side of the high-temperature-resistant fixed disc (namely the second ceramic layer), a plurality of heat dissipation air pipes are uniformly arranged around the central axis of the annular side wall, and the heat dissipation air pipes, the square through holes and the supporting ribs are all ectopic; one end of the heat dissipation air pipe is communicated with the cavity at the lower side of the high-temperature-resistant fixed disc (namely the second ceramic layer), and the other end of the heat dissipation air pipe respectively penetrates through the middle heat insulation layer and the outer heat insulation layer and is communicated with an external air cooling device (the heat dissipation air pipe is divided into an air inlet pipe and an air outlet pipe according to the functions of air inlet and air outlet).

And the support rod is further optimized, and the support rod is fixedly connected with the bottom surface of the high-temperature-resistant fixing disc (namely the bottom surface of the second ceramic layer) through a connecting bracket component.

Further optimizing, a heater sensor and a lamp bracket sensor are also arranged in the annular side wall cavity; the test end of the heater sensor is positioned between the heating lamp tubes on the upper side of the high-temperature-resistant fixed disc (namely the first ceramic layer), the lower end of the heater sensor penetrates through the high-temperature-resistant fixed disc, and a connecting wire is arranged on the lower side of the high-temperature-resistant fixed disc (namely the second ceramic layer); the lamp bracket sensor is fixedly arranged on one supporting rod.

The water cooling platform is further optimized, and is connected with the lower mounting plate and the vibrating table through a first threaded hole and a second threaded hole respectively; the first threaded hole is a blind hole from top to bottom, the second threaded hole is a through hole, and the blind hole is arranged to facilitate arrangement of the cooling guide pipe, avoid interference of the threaded hole and the cooling guide pipe, and avoid heat on the vibration coupler to be directly transmitted to the outside through the threaded hole, so that heat on the vibration coupler is effectively prevented from being blocked by the water cooling platform, heat exchange is carried out with the cooling guide pipe, and cooling is achieved.

Preferably, the thickness of the water cooling platform is 18-22 mm; the thickness of the bottom layer heat insulation plate is 3-7 mm.

The invention has the following technical effects:

the system can be used for the climate and mechanics strengthening simulation test of the plane equipment component in the multi-factor comprehensive environment of temperature, humidity, vibration, airflow and internal heat environment, so that the performance of the plane equipment component in the interaction influence of the environment and mechanics in the actual use process is truly reflected, and improvement of the structure, performance and the like of the plane equipment component and assessment of the service life of the component by researchers are facilitated. The vibration subsystem can be used for carrying out tests such as sine, random, classical impact, resonance search and residence, sine, random, sine, random and the like, and has various vibration types and wide vibration frequency range; meanwhile, the vibration coupling device can prevent the high-temperature heater and the fixed lamp bracket from being interfered by vibration (namely, the high-temperature heater and the fixed lamp bracket do not vibrate together with the vibration coupling device) on the premise of realizing the common vibration of the vibration coupling device and the workpiece to be tested by arranging the vibration flat wall type internal heat source subsystem, so that the coupling effect of heat and vibration on the plane equipment component is effectively ensured; the flat wall type internal heat source subsystem can meet the requirements of composite simulation working conditions of broadband vibration at about 1200 ℃ and 1-2200 Hz.

According to the vibration coupler, through the arrangement of the high-temperature-resistant fixing disc (namely through the matching of the first ceramic layer, the heat insulation layer in the middle of the lamp holder and the second ceramic layer), the inner cavity of the vibration coupler is divided into a heating area and a non-heating area, so that the rapid temperature rise of the heating area is realized, the overflow of heat of the heating area is avoided, the heat is effectively isolated, the influence of high temperature on the non-heating area is avoided, and heating failure or other safety accidents are caused; the vibration coupler is effectively cooled through the water cooling platform, so that the problems of large test result error, or failure of the flat wall type internal heat source subsystem test and the like caused by overhigh temperature of the vibration coupler are avoided.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a multi-environmental factor simulation system according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a vibrating table body of a vibrating subsystem according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a horizontal sliding table of a vibration subsystem in an embodiment of the present invention.

Fig. 4 is a schematic diagram showing the overall structure of a flat wall type internal heat source subsystem according to an embodiment of the present invention.

Fig. 5 is a cross-sectional view taken along A-A of fig. 4.

Fig. 6 is a schematic diagram of the vibration coupler and the fixed lamp holder of the flat wall type internal heat source subsystem according to the embodiment of the present invention.

Fig. 7 is a front view of a high temperature heater and a fixed lamp holder of a flat wall type internal heat source sub-system according to an embodiment of the present invention.

Fig. 8 is a rear view (as opposed to a front view) of a high temperature heater and a stationary lamp holder of a flat wall type internal heat source subsystem in accordance with an embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a water cooling platform of a flat wall type internal heat source subsystem according to an embodiment of the present invention.

100 parts of a test box main body; 10. a vibration subsystem; 11. a vibrating table body; 111. a support; 112. a magnetic pole assembly; 1121. a lower polar plate; 1122. a magnetic cylinder ring; 1123. an upper polar plate; 1124. a middle magnetic pole; 1125. a lower exciting coil; 1126. an upper exciting coil; 113. a drive assembly; 1130. a moving coil skeleton; 114. a shock absorbing member; 1151. a first guide device; 11511. a roller; 11512. a U-shaped spring; 1152. a second guide device; 1161. a first shield; 1162. a second shield; 12. a horizontal slipway; 121. a wallboard assembly; 122. a connector; 123. a horizontal mesa; 124. a T-shaped hydrostatic guideway and an oil source; 125. a slipway base; 20. a flat wall internal heat source subsystem; 21. a vibration coupling; 2101. an inner insulating layer; 2102. an intermediate insulating layer; 2103. an outer insulating layer; 2104. a heater sensor; 2105. a lamp holder sensor; 2106. a high temperature wire; 211. an upper mounting plate; 212. an annular sidewall; 2121. square through holes; 2122. a bottom layer heat insulation plate; 2123. a heat dissipation air pipe; 213. a lower mounting plate; 214. a support rib; 22. a high temperature heater; 221. a high temperature resistant fixed disk; 2210. a connecting bracket assembly; 2211. a first ceramic layer; 2212. a heat insulation layer in the middle of the lamp holder; 2213. a second ceramic layer; 222. a lamp tube fixture; 223. heating the lamp tube; 23. fixing the lamp holder; 231. a support rod; 2310. a flexible insulating sheath; 232. a support truss; 24. a water cooling platform; 241. a cooling conduit; 242. a first threaded hole; 243. a second threaded hole; 25. a workpiece to be tested; 30. a greenhouse environment simulation subsystem; 31. an air conditioning unit; 32. a cooling unit; 33. a humidity adjusting unit; 40. an air flow simulation subsystem; 41. a long axis fan; 42. a fan blade; 43. an adjustable air duct; 44. a frequency converter.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Examples:

as shown in fig. 1 to 9, a multi-factor environmental simulation system for vibration under ultra-high temperature conditions includes a test box main body 100, characterized in that: the test box main body 100 comprises a vibration subsystem 10, a flat wall type internal heat source subsystem 20, a greenhouse environment simulation subsystem 30, an air flow simulation subsystem 40 and a comprehensive control system, wherein the comprehensive control system is used for controlling a controller of the vibration subsystem 10, the internal heat source simulation subsystem 20, the greenhouse environment simulation subsystem 30, the air flow simulation subsystem 40 and the like to work, control data and collect data;

the vibration subsystem 10 is used for simulating vibration environment factors under the working condition of equipment and comprises a vibration table body 11, a horizontal sliding table 12, a power amplifier, a cooling unit 32, a heat insulation pad and a controller; the vibrating table body 11 includes a support 111, a magnetic pole assembly 112, a driving assembly 113, a shock absorbing member 114, a support guide system, a shield, and a vibrating table top; the magnetic pole assembly 112 is disposed at a lower portion of the middle of the support 111 (as shown in fig. 2); the magnetic cylinder ring 1122 is positioned between the lower pole plate 1121 and the upper pole plate 1123, the middle pole 1124 is positioned in the magnetic cylinder ring 1122, and the central axes of the middle pole 1124, the lower pole plate 1121 and the upper pole plate 1123 are collinear with the central axis of the magnetic cylinder ring 1122 (as shown in fig. 2); the inner side of the middle part of the magnetic cylinder ring 1122 (i.e. the side close to the middle magnetic pole 1124) is protruded, a lower exciting coil 1125 is arranged at the lower side of the protruded part, an upper exciting coil 1126 is arranged at the upper part (as shown in fig. 2), the lower exciting coil 1125 and the upper exciting coil 1126 are in a double-circle lap winding structure (i.e. the lamination windings are firstly welded in series to form a series connection on a circuit, and then the water inlet and the water outlet of each lamination winding are respectively connected in parallel to form a parallel connection on a waterway, so those skilled in the art can understand that the specific embodiment of the present application does not make excessive discussion); through the double magnetic circuit structure, a more stable annular magnetic field is provided, the leakage magnetic field intensity of the table top is effectively reduced, the defect of uneven cooling of the inner layer winding and the outer layer winding of the single-wire shaft type winding exciting coil is overcome, the cooling uniformity of the exciting coil winding is ensured, the cooling effect is further improved, and the high temperature of the vibrating table is avoided. The driving assembly 113 includes a driving coil and a moving coil frame 1130, the moving coil frame 1130 is disposed on the upper side of the middle of the magnetic pole assembly 112 (i.e. the moving coil frame 1130 is located in the magnetic cylinder 1122 and on the upper side of the middle magnetic pole 1124, as shown in fig. 2), and the driving coil is wound on the moving coil frame 1130; the vibration isolation device 114 adopts air springs for isolating vibration of the whole vibration table body 11 (as shown in fig. 2), and the air springs adopt 4 groups of 8 vibration isolation devices (the specific setting positions of the air springs adopt the conventional design in the field, so that the vibration isolation frequency of the vibration table body 11 can be controlled to be about 3Hz in the vertical position and about 2Hz in the horizontal position); the supporting and guiding system comprises a first guiding device 1151 and a second guiding device 1152, wherein the first guiding device 1151 is arranged on the upper side of the magnetic pole assembly 112 (i.e. the upper polar plate 1123) and positioned on the outer ring of the moving coil framework 1130, and comprises a roller 11511 and a U-shaped spring 11512 (shown in fig. 2) for ensuring good waveform of the vibrating table top, small distortion and small transverse vibration; the second guiding device 1152 is a hydrostatic bearing, and is located in the middle of the magnetic pole assembly 112 (as shown in fig. 2) on the lower side of the moving coil frame 1130; the shield comprises a first shield 1161 and a second shield 1162, the first shield 1161 is arranged on the outer ring of the moving coil skeleton 1130 and is positioned on the upper side of the magnetic pole assembly 112 (i.e. the upper polar plate 1123), and the second shield 1162 is arranged on the lower side of the magnetic pole assembly 112 (i.e. the lower polar plate 1121) (as shown in fig. 2); the vibrating table is located on the upper side of the moving coil frame 1130 (the location of the vibrating table will be understood by those skilled in the art, and therefore, is not specifically shown in the drawings of the present application). The horizontal sliding table 12 adopts a "T" type hydrostatic moving system for receiving the vibration table 11, and includes a wall plate assembly 121, a connector 122, a horizontal table 123, a "T" type hydrostatic guideway and oil source 124, and a sliding table base 125 (shown in fig. 3). The power amplifier adopts a sine pulse width modulation digital power amplifier, which amplifies and restores a low-voltage signal input by a control instrument into an original signal through a digital circuit, and then outputs the original signal to a moving coil circuit of the vibration table body 11 to push the vibration table to move, and the main components are as follows: the system adopts a high-voltage and small-current output mode, reduces power loss in the transmission process, realizes effective and reasonable impedance matching, and can be used for a power amplifier by adopting a conventional design known in the art. The cooling unit 32 can adopt a double-circulation cooling mode, namely, the cooling unit 32 is respectively communicated with the moving coil, the exciting coil and the short-circuit ring for water cooling, and firstly, internal circulating water flows through the pipelines of the moving coil and the exciting coil and the cooling water pipeline of the short-circuit ring to take away heat generated by the vibration table body 11 during working; and then the heat exchange is carried out through the heat exchanger in the cooling unit 32, and the heat generated by the heat exchange in the heat exchanger is carried by the external circulating water, so that the purpose of cooling the internal circulating water is achieved. The cooling water is recycled distilled water. The cooling unit 32 may be of conventional design in the art to achieve a cooling effect. The heat insulation pad is arranged on the end face of the vibrating table surface and used for heat insulation. The controller adopts an 8-channel vibration controller which is conventional in the art, and only needs to meet the functions of configuring vibration control software modules such as sine, random, classical impact, resonance search and residence, sine, random and the like.

The flat wall type internal heat source subsystem 20 comprises a vibration connector 21, a high-temperature heater 22, a fixed lamp bracket 23 and a water cooling platform 24; the vibration coupler 21 is an integrated structure and comprises an upper mounting plate 211, an annular side wall 212, a lower mounting plate 213 and a supporting rib 214, wherein the middle parts of the upper mounting plate 211 and the lower mounting plate 213 are respectively provided with a through hole, the bottom surface of the upper mounting plate 211 is fixedly connected with the top surface of the lower mounting plate 213 through the annular side wall 212, and the diameter of the through hole of the lower mounting plate 213 is larger than that of the through hole of the upper mounting plate 211 (as shown in fig. 5); the upper mounting plate 211 and the annular side wall 212 are in line with the central axis of the lower mounting plate 213, a plurality of supporting ribs 214 are uniformly arranged on the outer ring of the annular side wall 212 around the central axis of the annular side wall (the number of the supporting ribs 214 is determined according to the specific vibration simulation situation), and the supporting ribs 214 are fixedly connected with the upper mounting plate 211 and the lower mounting plate 213 respectively; the upper end surface of the upper mounting plate 211 is provided with a workpiece 25 to be tested, and the central axis of the workpiece 25 to be tested is collinear with the central axis of the through hole of the upper mounting plate 211.

The high temperature heater 22 is disposed in a cavity formed by the upper mounting plate 211, the lower mounting plate 213 and the annular sidewall 212, and comprises a high temperature resistant fixing plate 221, a lamp tube fixture 222 and a heating lamp tube 223, the high temperature resistant fixing plate 221 sequentially comprises a first ceramic layer 2211, a lamp holder middle heat insulation layer 2212 and a second ceramic layer 2213 from top to bottom, the central axes of the first ceramic layer 2211, the lamp holder middle heat insulation layer 2212 and the second ceramic layer 2213 are collinear with the central axis of the annular sidewall 212, and the diameters of the first ceramic layer 2211 and the second ceramic layer 2213 are smaller than the inner diameter of the annular sidewall 212 (i.e. the outer walls of the first ceramic layer 2211 and the second ceramic layer 2213 are not in contact with the inner wall of the annular sidewall 212, so that heat transfer is avoided), and the outer wall of the lamp holder middle heat insulation layer 2212 is flexibly connected with the inner wall of the annular sidewall 212 (as shown in fig. 5, specifically, the outer wall of the lamp holder middle heat insulation layer 2212 is flexibly connected with the inner wall of the inner heat insulation layer 2101). By adopting the arrangement of the first ceramic layer 2211 and the second ceramic layer 2213, firstly, infrared rays radiated by the heating lamp tubes 223 arranged on the upper side of the first ceramic layer 2211 are reflected, so that heat is effectively accumulated on the upper side of the high-temperature-resistant fixed disc 221 (namely the first ceramic layer 2211), rapid temperature rise of a workpiece 25 to be tested is realized, and meanwhile, the temperature of the lower side of the high-temperature-resistant fixed disc 221 (namely the second ceramic layer 2213) is effectively reduced, and the influence of high temperature on a non-heating area is avoided; secondly, the ceramic laminate can prevent deformation, so that inaccurate test results and even safety accidents caused by the heated deformation of the high-temperature-resistant fixing disc 221 in the high-temperature heating process are avoided. The heat insulation layer 2212 in the middle of the lamp holder is matched with the first ceramic layer 2211 and the ceramic bottom layer 2213, heat generated by the heating lamp tube 223 is further accumulated on the upper side of the high-temperature-resistant fixed disc 221 (namely the first ceramic layer 2211) so as to realize rapid temperature rise of an upper heating zone and avoid the influence of high temperature on a lower non-heating zone, and the vibration of the vibration coupler 21 is prevented from influencing the high-temperature heater 22 (particularly the heating lamp tube 223) through flexible connection of the heat insulation layer 2212 in the middle of the lamp holder and the annular side wall 212, so that the mutual influence of vibration and heating is avoided, and vibration and heat coupling is carried out on a workpiece 25 to be tested; the thickness of the first ceramic layer 2211 and the second ceramic layer 2213 is 4-6 mm (preferably 5 mm), and the thickness of the heat insulation layer 2212 in the middle of the lamp holder is 8-12 mm (preferably 10 mm). A plurality of heating lamp tubes 223 are uniformly arranged in the middle of the upper end surface of the high-temperature-resistant fixed disc 221 and positioned between the two lamp tube clamps 222, and the heating lamp tubes 223 are mutually parallel (the heating lamp tubes 223 adopt quartz outer tubes), the two ends of the heating lamp tubes 223 are respectively fixed by the lamp tube clamps 222 at the two ends, and one end of the heating lamp tube 223 penetrates through the high-temperature-resistant fixed disc 221 and is positioned in a cavity at the lower side of the high-temperature-resistant fixed disc 221; specifically, the heating lamp tubes 223 are in a double-hole tube structure, the whole heating lamp tubes 223 are in an L-shaped structure, and the cross sections of the heating lamp tubes 223 are in an + -infinity structure (namely, one ends of the corners of the L-shape of the heating lamp tubes 223 penetrate through the high-temperature-resistant fixed disc 221 after being fixed by the corresponding lamp tube clamps 222 and are positioned in the cavity at the lower side of the high-temperature-resistant fixed disc 221, as shown in fig. 5 and 7), and the number of the heating lamp tubes 223 is not less than 5 (6 in fig. 7, and the number is determined according to specific heating temperature and the size of the heating lamp tubes 223); the part of the heating tube 223, which is positioned on the upper side of the high-temperature resistant fixed disc 221 (i.e. the first ceramic layer 2211), is provided with a high infrared short wave quartz radiator, so that radiation short waves are generated to realize heating, and the length of the high infrared short wave quartz radiator (i.e. the length of a heating effective area) is 200-300 mm (preferably 250 mm); the portion of the heating tube 223 located at the lower side of the high temperature resistant fixing plate 221 is connected with a high temperature wire 2106 (i.e. one end of the L-shaped corner of the heating tube 223), and one end of the high temperature wire 2106 far from the heating tube 223 sequentially penetrates through the inner heat insulation layer 2101, the annular side wall 212, the middle heat insulation layer 2102, the outer heat insulation layer 2103 and is connected with an outer wall power supply device.

The annular side wall 212 is located at the lower side of the high temperature resistant fixed disc 221, and a plurality of square through holes 2121 are symmetrically formed around the central axis of the annular side wall, the square through holes 2121 and the supporting ribs 214 are ectopic (i.e. the square through holes 2121 and the supporting ribs 214 do not interfere with each other), the fixed lamp holder 23 comprises a supporting rod 231 and a supporting truss 232, the supporting rod 231 corresponds to the square through holes 2121, two ends of the supporting rod 231 respectively penetrate through the two mutually symmetrical square through holes 2121 and are fixedly connected with the supporting truss 232, and the part of the supporting rod 231 located in the cavity is fixedly connected with the lower end face of the high temperature resistant fixed disc 221 (i.e. the second ceramic layer 2213) through a connecting support component 2210 (as shown in fig. 8).

The upper end surface of the water cooling platform 24 is fixedly connected with the lower end surface of the lower mounting plate 213, a plurality of cooling pipes 241 are uniformly arranged in the water cooling platform 24, and the lower end surface of the water cooling platform 24 is fixedly connected with the vibrating table; the water cooling platform 24 is connected with the lower mounting plate 213 and the vibration table by arranging a first threaded hole 242 and a second threaded hole 243 respectively; the first threaded hole 242 is a blind hole from top to bottom, the second threaded hole 243 is a through hole, and the blind hole is provided to facilitate arrangement of the cooling conduit 241, avoid interference between the threaded hole and the cooling conduit 241, and avoid heat on the vibration coupler 21 from being directly transferred to the outside through the threaded hole, so that heat on the vibration coupler 21 is effectively blocked by the water cooling platform 24, thereby performing heat exchange with the cooling conduit 241, and realizing cooling. The thickness of the water cooling platform 24 is 18 to 22mm, preferably 20mm.

The inner wall of the annular side wall 212 is uniformly provided with an inner heat insulation layer 2101, the outer wall of the annular side wall 212 is uniformly wrapped with an intermediate heat insulation layer 2102, the upper end of the upper installation plate 211 and the outer wall of the supporting rib 214 are uniformly provided with an outer heat insulation layer 2103 (shown in fig. 5), a flexible heat insulation sheath 2310 (shown in fig. 4 and 5) is wrapped between the supporting rod 231 and the square through hole 2121, a bottom heat insulation plate 2122 is arranged in a cavity between the water cooling platform 24 and the supporting rod 231, the thickness of the bottom heat insulation plate 2122 is 3-7 mm (preferably 5 mm), the bottom heat insulation plate 2122 is parallel to the upper installation plate 211, and the periphery of the bottom heat insulation plate 2122 is fixedly connected with the inner wall of the inner heat insulation layer 2101.

In order to realize further heat dissipation of the cavity at the lower side of the high-temperature-resistant fixing disc 221 (i.e. the second ceramic layer 2213), inaccurate test results and even safety accidents caused by high temperature of the cavity at the lower side of the high-temperature-resistant fixing disc 221 (i.e. the second ceramic layer 2213) are avoided; the annular side wall 212 is positioned at the lower side of the high temperature resistant fixed disc 221 (i.e. the second ceramic layer 2213), and a plurality of heat dissipation air pipes 2123 are uniformly arranged around the central axis of the annular side wall 212, and the heat dissipation air pipes 2123 are located at different positions from the square through holes 2121 and the support ribs 214 (i.e. the heat dissipation air pipes 2123 are not interfered with the square through holes 2121 and the support ribs 214); one end of the heat dissipation air pipe 2123 is communicated with the cavity at the lower side of the high temperature resistant fixed disc 221 (i.e. the second ceramic layer 2213), and the other end of the heat dissipation air pipe 2123 penetrates through the middle heat insulation layer 2102, the outer heat insulation layer 2103 and is communicated with the outer air cooling device respectively (the heat dissipation air pipe 2123 is divided into an air inlet pipe and an air outlet pipe according to the functions of air inlet and air outlet, namely the heat dissipation air pipe 2123 arranged on the annular side wall 212 is divided into the air inlet pipe and the air outlet pipe, and the heat dissipation air pipe 2123 is divided into the air outlet pipe and the air inlet pipe according to the air inlet and the air outlet of the outer air cooling device, which can be understood by a person skilled in the art, and the specific embodiment of the application is not excessively discussed).

A heater sensor 2104 and a lamp holder sensor 2105 are also arranged in the cavity of the annular side wall 212; the test end of the heater sensor 2104 is positioned between the heating lamp tubes 223 on the upper side of the high-temperature-resistant fixed disc 221 (namely the first ceramic layer 2211), the lower end of the heater sensor 2104 penetrates through the high-temperature-resistant fixed disc 221 and is positioned on the lower side of the high-temperature-resistant fixed disc 221 (namely the second ceramic layer 2213) to be provided with connecting wires; the lamp holder sensor 2105 is fixedly disposed on one of the support rods 231 (as shown in fig. 5 and 8).

Preferably, the middle heat insulation layer 2212, the flexible heat insulation sheath 2310, the outer heat insulation layer 2103, the inner heat insulation layer 2101, the middle heat insulation layer 2102 and the bottom heat insulation plate 2122 of the lamp holder are made of fiber reflection type materials; the fiber reflection type material is formed by alternately stacking and layering a heat insulation layer and a reflection layer and is coated by adopting fiber cloth, and the heat insulation layer is one or more of aluminum silicate fibers, magnesium silicate fibers, aerogel felts and ceramic fiber felts; the reflecting layer adopts one or more of molybdenum foil, nickel foil, stainless steel foil, aluminum foil and double-sided aluminized polyimide film.

The temperature and humidity environment subsystem 30 includes an air conditioning unit 31, a cooling unit 32 (the same cooling unit 32 as the cooling unit 32 of the vibration subsystem 10 is employed), and a humidity conditioning unit 33; the air conditioning unit 31 includes an air heating device, an air cooling device, and an air circulation device; the cooling unit 32 is a refrigeration compressor; the humidity adjustment unit 33 includes a humidification system and a dehumidification system; the temperature and humidity of the air in the main body (mainly a testing working chamber) of the testing box are regulated through the refrigerating compressor, the air heating device, the air circulating device and the humidity regulating unit 33, and then the treated air flows through the air circulating device (which can adopt fan circulation), so that repeated forced circulation is formed, and the temperature and humidity balance regulation is carried out, thereby achieving the purpose of simulating real working conditions. The cooling unit 32 employs an inverse carnot cycle consisting of two isothermal processes and two adiabatic processes; the refrigerant is compressed to a higher pressure through the heat insulation of the compressor, the exhaust temperature is increased due to work consumption, the refrigerant exchanges heat with the surrounding medium through the condenser, then the refrigerant is expanded and operated through the heat insulation of the shutoff valve, the temperature of the refrigerant is reduced, and finally the refrigerant absorbs high-temperature heat on the surface of an object through the evaporator, so that the temperature of the cooled object is reduced, and the object is circulated to perform refrigeration. The humidifying system adopts electric heating steam for humidification, and the dehumidifying system adopts a condensation method for dehumidification.

The airflow simulation subsystem 40 comprises a long-axis fan 41, fan blades 42, an adjustable air duct 43 and a frequency converter 44 (shown in fig. 1), wherein the long-axis fan 41 is arranged on one side wall of the test box main body 10, and an output shaft of the long-axis fan is positioned in the test box main body 10 (mainly a test working chamber) and is fixedly connected with the fan blades 42 positioned in the adjustable air duct 43; the adjustable air duct 43 is located inside the test working chamber; the frequency converter 44 is arranged on the test box main body 10 and is used for adjusting the rotating speed of the long-axis fan 41; the fan blade 42 is driven to rotate by the long-axis fan 41 to adjust the flow speed of the air flow; meanwhile, the air flow environment of the power cabin under the use condition is simulated by adjusting the position and the direction of the air duct. The adjustable air duct 43 has an air outlet with a length of 480mm and a width of 100mm, and the length of the adjustable air duct is designed to be adjustable, so that the air outlet position can be raised or lowered according to the test state.

Working principle:

in use, the workpiece 25 to be tested is fixedly mounted on the upper end surface of the upper mounting plate 211 and positioned between the outer heat insulating layers 2103 as shown in fig. 4, while ensuring that the bottom surface of the workpiece 25 to be tested forms a seal with the top surface of the upper mounting plate 211. Then, starting the vibration table body 11 to drive the water cooling platform 24 and the vibration connector 21 to vibrate together, so as to drive the workpiece 25 to be tested on the vibration connector 21 to vibrate, and simulating vibration working conditions, starting the high infrared short wave quartz radiator with the wavelength of 0.75-1.4 mu m, wherein the filament adopts tungsten filament and lamp tube sealing and vacuumizing treatment, and the inside is filled with special protective gas; the specific wavelength characteristic of the short waves enables the penetrating power of heating to be stronger, the reaction time to be quicker, the temperature of the filament can reach 1800-2400 ℃, and meanwhile, the quartz outer tube can continuously and stably work in an environment with the temperature of more than 1000 ℃ and has good chemical corrosion resistance; the high infrared short wave quartz radiator radiates outwards to heat the workpiece 25 to be tested, and meanwhile, due to the cooperation of the first ceramic layer 2211, the heat insulation layer 2212 in the middle of the lamp holder and the second ceramic layer 2213, heat overflow is effectively avoided, the temperature in the cavity between the high temperature resistant fixed disc 221 and the workpiece 25 to be tested is quickly increased to reach a simulation temperature, and internal heat environment simulation of the workpiece 25 to be tested is realized. Because the high temperature resistant fixed disc 221 is supported and fixed through the supporting rods 231, the supporting rods 231 are fixedly connected with the supporting trusses 232 (the supporting trusses 232 are fixedly arranged in the environment simulation test box), the supporting rods 231 are flexibly connected with the square through holes 2121, and the heat insulation layer 2212 in the middle of the lamp holder is flexibly connected with the annular side wall 212, the vibration of the vibration coupler 21 can not cause the vibration of the fixed lamp holder 23, and further the vibration of the high temperature heater 22, so that the effective coupling of heat vibration is realized. During the thermo-vibration coupling process, cooling of the entire vibration coupler 21 is achieved by introducing cooling water into the cooling conduit 241, avoiding overheating of the vibration coupler 21.

In the vibration and internal heat high temperature coupling simulation environment, the greenhouse environment simulation subsystem 30 and the air flow simulation subsystem 40 are started at the same time, and the external temperature, humidity and air flow environment are simulated respectively.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multi-factor environmental simulation system of vibration under super high temperature condition, includes test box main part (100), its characterized in that: the test box main body (100) comprises a vibration subsystem (10), a flat wall type internal heat source subsystem (20), a greenhouse environment simulation subsystem (30) and an air flow simulation subsystem (40);

the vibration subsystem (10) comprises a vibration table body (11), a horizontal sliding table (12), a power amplifier, a cooling unit (32), a heat insulation pad and a controller;

the flat wall type internal heat source subsystem (20) comprises a vibration coupler (21), a high-temperature heater (22), a fixed lamp bracket (23) and a water cooling platform (24); the vibration coupler (21) is of an integrated structure and comprises an upper mounting plate (211), an annular side wall (212), a lower mounting plate (213) and supporting ribs (214), wherein a through hole is formed in the middle of each of the upper mounting plate (211) and the lower mounting plate (213), the bottom surface of each of the upper mounting plate (211) and the top surface of each of the lower mounting plate (213) are fixedly connected through the annular side wall (212), the upper mounting plate (211), the annular side wall (212) and the lower mounting plate (213) are collinear in central axes, a plurality of supporting ribs (214) are uniformly arranged on the outer ring of the annular side wall (212) around the central axes of the outer ring of the annular side wall and the supporting ribs (214) are fixedly connected with the upper mounting plate (211) and the lower mounting plate (213) respectively; the high-temperature heater (22) is arranged in a cavity formed by the upper mounting plate (211), the lower mounting plate (213) and the annular side wall (212), and comprises a high-temperature-resistant fixing plate (221), lamp clamps (222) and heating lamps (223), wherein two ends of the upper end face of the high-temperature-resistant fixing plate (221) are respectively fixedly provided with one lamp clamp (222), a plurality of heating lamps (223) are uniformly arranged in the middle of the upper end face of the high-temperature-resistant fixing plate (221) and between the two lamp clamps (222), the heating lamps (223) are mutually parallel, two ends of the heating lamps (223) are respectively fixed by the lamp clamps (222) at the two ends, and one end of each heating lamp (223) penetrates through the high-temperature-resistant fixing plate (221) and is positioned in the cavity at the lower side of the high-temperature-resistant fixing plate (221); the annular side wall (212) is positioned at the lower side of the high-temperature-resistant fixed disc (221) and is symmetrically provided with a plurality of square through holes (2121) around the central axis of the annular side wall, the square through holes (2121) are in different positions with the supporting ribs (214), the fixed lamp bracket (23) comprises a supporting rod (231) and a supporting truss (232), the supporting rod (231) corresponds to the square through holes (2121), two ends of the supporting rod (231) respectively penetrate through the two mutually symmetrical square through holes (2121) and are fixedly connected with the supporting truss (232), and the part of the supporting rod (231) positioned in the cavity is fixedly connected with the lower end face of the high-temperature-resistant fixed disc (221); the upper end face of the water cooling platform (24) is fixedly connected with the lower end face of the lower mounting plate (213), a plurality of cooling pipes (241) are uniformly arranged in the water cooling platform (24), and the lower end face of the water cooling platform (24) is fixedly connected with the vibrating table; the inner wall of the annular side wall (212) is uniformly provided with an inner heat insulation layer (2101) and an intermediate heat insulation layer (2102) uniformly wrapped by the outer wall of the annular side wall (212), the upper end of the upper installation plate (211) and the outer wall of the supporting rib (214) are uniformly provided with an outer heat insulation layer (2103), a flexible heat insulation sheath (2310) is wrapped between the supporting rod (231) and the square through hole (2121), a bottom heat insulation plate (2122) is arranged in a cavity between the water cooling platform (24) and the supporting rod (231), and the bottom heat insulation plate (2122) is parallel to the upper installation plate (211) and is fixedly connected with the inner wall of the inner heat insulation layer (2101) around the bottom heat insulation plate (2122).

2. The system for simulating a multi-factor environment vibrating at ultra-high temperatures of claim 1, wherein: the simulation system also comprises an integrated control system.

3. A multi-factor environmental simulation system vibrating under ultra-high temperature conditions according to claim 1 or 2, wherein: the greenhouse environment simulation subsystem (30) comprises an air conditioning unit (31), a cooling unit (32) and a humidity conditioning unit (33); the air conditioning unit (31) includes an air heating device, an air cooling device, and an air circulation device; the cooling unit (32) is a refrigeration compressor; the humidity adjustment unit (33) comprises a humidifying system and a dehumidifying system.

4. A multi-factor environmental simulation system vibrating under ultra-high temperature conditions according to claim 3, wherein: the airflow simulation subsystem (40) comprises a long-axis fan (41), fan blades (42), an adjustable air duct (43) and a frequency converter (44), wherein the long-axis fan (41) is arranged on one side wall of the test box main body (100), and an output shaft of the long-axis fan is positioned in the test box main body (100) and fixedly connected with the fan blades (42) positioned in the adjustable air duct (43); the adjustable air duct (43) is positioned in the test working chamber; the frequency converter (44) is arranged on the test box main body (100).

5. The system for simulating a multi-factor environment vibrating at ultra-high temperatures of claim 4, wherein: the vibration table body (11) comprises a support (111), a magnetic pole assembly (112), a driving assembly (113), a damping part (114), a supporting and guiding system, a shield and a vibration table top;

the magnetic pole assembly (112) is arranged at the lower part of the middle of the support (111);

the driving assembly (113) comprises a driving coil and a moving coil framework (1130), the moving coil framework (1130) is arranged on the upper side of the middle of the magnetic pole assembly (112), and the driving coil is wound on the moving coil framework (1130);

the damping part (114) adopts an air spring;

the supporting and guiding system comprises a first guiding device (1151) and a second guiding device (1152), wherein the first guiding device (1151) is arranged on the upper side of the magnetic pole assembly (112) and positioned on the outer ring of the moving coil framework (1130), and comprises a roller (11511) and a U-shaped spring (11512); the second guiding device (1152) is a hydrostatic bearing and is positioned in the middle of the magnetic pole assembly (112) at the lower side of the moving coil framework (1130);

the shield comprises a first shield (1161) and a second shield (1162), wherein the first shield (1161) is arranged on the outer ring of the moving coil framework (1130) and is positioned on the upper side of the magnetic pole assembly (112), and the second shield (1162) is arranged on the lower side of the magnetic pole assembly (112);

The vibrating table top is positioned on the upper side of the moving coil framework (1130).

6. The system for simulating a multi-factor environment vibrating at ultra-high temperatures of claim 5, wherein: the magnetic pole assembly (112) comprises a lower pole plate (1121), a magnetic cylinder ring (1122), an upper pole plate (1123), a middle magnetic pole (1124), a lower exciting coil (1125) and an upper exciting coil (1126), wherein the magnetic cylinder ring (1122) is positioned between the lower pole plate (1121) and the upper pole plate (1123), the middle magnetic pole (1124) is positioned in the magnetic cylinder ring (1122) and the central axes of the middle magnetic pole (1124), the lower pole plate (1121) and the upper pole plate (1123) are collinear with the central axes of the magnetic cylinder ring (1122); the magnetic cylinder ring (1122) is characterized in that the inner side of the middle part of the magnetic cylinder ring is protruded, a lower exciting coil (1125) is arranged at the lower side of the protruded part, an upper exciting coil (1126) is arranged at the upper part of the magnetic cylinder ring, and the laminated windings of the lower exciting coil (1125) and the upper exciting coil (1126) adopt a double-ring lap winding structure.

7. The system for simulating a multi-factor environment vibrating at ultra-high temperatures of claim 1, wherein: the upper end face of the upper mounting plate (211) is provided with a workpiece (25) to be tested, and the central axis of the workpiece (25) to be tested is collinear with the central axis of the upper mounting plate (211); the diameter of the through hole of the lower mounting plate (213) is larger than that of the through hole of the upper mounting plate (211).

8. The system for simulating a multi-factor environment vibrating at ultra-high temperatures of claim 1, wherein: the high-temperature-resistant fixing disc (221) sequentially comprises a first ceramic layer (2211), a lamp holder middle part heat insulation layer (2212) and a second ceramic layer (2213) from top to bottom, wherein the central axis of the first ceramic layer (2211), the lamp holder middle part heat insulation layer (2212) and the central axis of the second ceramic layer (2213) are collinear with the central axis of the annular side wall (212), the diameter of the first ceramic layer (2211) and the diameter of the second ceramic layer (2213) are smaller than the inner diameter of the annular side wall (212), and the outer wall of the lamp holder middle part heat insulation layer (2212) is flexibly connected with the inner wall of the annular side wall (212).

9. The system for simulating a multi-factor environment vibrating at ultra-high temperatures of claim 1, wherein: the heating lamp tubes (223) adopt a double-hole tube structure, the whole heating lamp tube is of an L-shaped structure, the cross section of the heating lamp tube is of an + -shaped structure, and the number of the heating lamp tubes (223) is not less than 5; the part of the heating lamp tube (223) positioned on the upper side of the high-temperature resistant fixed disc (221) is provided with a high infrared short wave quartz radiator; the part of the heating lamp tube (223) positioned at the lower side of the high-temperature-resistant fixed disc (221) is connected with a high-temperature wire (2106), and one end of the high-temperature wire (2106) far away from the heating lamp tube (223) sequentially penetrates through the inner heat insulation layer (2101), the annular side wall (212), the middle heat insulation layer (2102) and the outer heat insulation layer (2103) and is connected with an outer wall power supply device.

10. The system for simulating a multi-factor environment vibrating at ultra-high temperatures of claim 1, wherein: the annular side wall (212) is positioned at the lower side of the high-temperature-resistant fixed disc (221), a plurality of radiating air pipes (2123) are uniformly arranged around the central axis of the annular side wall (212), and the radiating air pipes (2123), the square through holes (2121) and the supporting ribs (214) are all in different positions; one end of the radiating air pipe (2123) is communicated with the cavity at the lower side of the high-temperature-resistant fixed disc (221), and the other end of the radiating air pipe respectively penetrates through the middle heat insulation layer (2102) and the outer heat insulation layer (2103) and is communicated with an external air cooling device.