CN115041248A

CN115041248A - Multi-factor environment simulation system for vibration under ultrahigh temperature condition

Info

Publication number: CN115041248A
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: 2022-09-13
Anticipated expiration: 2042-06-10
Also published as: CN115041248B

Abstract

The invention provides a multi-factor environment simulation system vibrating under an ultrahigh 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 airflow 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 holder (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 a support rib (214). The system integrates multiple environmental factors such as temperature, humidity, vibration, airflow and internal heat source, and can truly and effectively simulate the influence of the multiple environmental factors on equipment products.

Description

Multi-factor environment simulation system for vibration under ultrahigh temperature condition

Technical Field

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

Background

In the process of using, storing and the like of equipment products, due to the interaction of various natural environments and mechanical environments, the functions, the performances and the service life of the equipment products are affected, so that the performances and the effects of the equipment products are reduced and even lost, and various accidents are even caused. Factors such as temperature, humidity, vibration, airflow, internal thermal environment and the like have great influence on the performance and service life of equipment products, the structures and materials of the equipment products are easy to corrode and age due to long-term exposure in atmospheric environments such as high temperature, high humidity, high salt spray and the like, and meanwhile, the expansion of fatigue cracks is further accelerated due to stress concentration generated in the using process, so that the structure is damaged; meanwhile, the equipment product is affected by vibration, airflow and the like, and the structure has the defects of deformation, damage and the like, so that the equipment product loses the original performance and effect, and the equipment product is invalid and even safety accidents are caused.

The environmental test is an important means for examining, screening and researching the environmental adaptability of the equipment products and the 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 lacked, the research on the influence of the natural environment and the mechanical environment on equipment products is insufficient, the traditional natural environment test period is long, the rapid evaluation and judgment are difficult to realize, the existing test method for simulating the mechanical property in a laboratory still has the defects of incomplete simulation factors, lack of comprehensive environmental factors and the like, so that the influence of key environmental factors in the whole period of the actual effective simulation and test equipment products on the performance and the service life can not be really realized at present, only approximate evaluation can be carried out, the result difference between the actual simulation and the test equipment products is large, and potential safety hazards in the actual use process are easy to occur.

Therefore, how to truly and rapidly simulate the comprehensive influence of the multi-factor environment such as temperature, humidity, vibration, airflow, internal heat source and the like on the equipment product in the actual use and storage processes is a key and difficult point of the current research so as to truly and effectively judge the performance and service life of the equipment product in the actual use working condition.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a multi-factor environment simulation system vibrating under the ultrahigh temperature condition, which integrates multiple environment factors such as temperature, humidity, vibration, airflow, an internal heat source and the like, can truly and effectively simulate the influence of the integrated environment factors on equipment products in actual use working conditions, and thus, the use performance and the service life of the equipment products in the actual environment can be rapidly and accurately judged.

The purpose of the invention is realized by the following technical scheme:

the multi-factor environment simulation system capable of vibrating under the condition of ultrahigh temperature 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 airflow simulation subsystem;

the vibration subsystem is used for simulating vibration environmental 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 coupler, a high-temperature heater, a fixed lamp bracket and a water cooling platform; the vibration coupler is of an integrally formed structure and comprises an upper mounting disc, an annular side wall, a lower mounting disc and support ribs, wherein a through hole is formed in the middle of each of the upper mounting disc and the lower mounting disc, the bottom surface of the upper mounting disc and the top surface of the lower mounting disc are fixedly connected through the annular side wall, the central axes of the upper mounting disc, the annular side wall and the lower mounting disc are collinear, a plurality of support ribs are uniformly arranged on the outer ring of the annular side wall around the central axis of the annular side wall, and the support ribs are fixedly connected with the upper mounting disc and the lower mounting disc respectively; 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 disc, lamp tube clamps and heating lamp tubes, wherein two ends of the upper end face of the high-temperature-resistant fixing disc are respectively fixedly provided with one lamp tube clamp; the annular side wall is positioned at the lower side of the high-temperature resistant fixed disc and is symmetrically provided with a plurality of square through holes around the central axis, the square through holes and the support ribs are in different positions, the fixed lamp bracket comprises a support rod and a support truss, the support rod corresponds to the square through holes, two ends of the support rod respectively penetrate through the two symmetrical square through holes and are fixedly connected with the support truss, and the part of the support rod positioned in the cavity is fixedly connected with the lower end face of the high-temperature resistant fixed disc; the upper end surface of the water-cooling platform is fixedly connected with the lower end surface of the lower mounting plate, a plurality of cooling guide pipes are uniformly arranged in the water-cooling platform, and the lower end surface of the water-cooling platform is fixedly connected with the vibrating table; the annular side wall inner wall evenly sets up middle insulating layer of even parcel of inside insulating layer and annular side wall outer wall, upper portion mounting disc upper end and support rib outer wall evenly set up outside insulating layer, parcel flexible thermal-insulated 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 and upper portion mounting disc are parallel and bottom heat insulating board all around with inside insulating layer inner wall fixed connection.

And the simulation system further comprises a comprehensive control system for controlling the controller of the vibration subsystem, the internal heat source simulation subsystem, the greenhouse environment simulation subsystem, the airflow simulation subsystem and the like to work, control data and collect data.

Further optimized, the warm and humid environment subsystem comprises an air conditioning unit, a cooling unit (the same cooling unit is adopted as the cooling unit 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 air temperature and the humidity in the test box main body (mainly a test working chamber) are adjusted through the refrigeration compressor, the air heating device, the air circulating device and the humidity adjusting unit, and then the processed air flows through the air circulating device (capable of adopting fan circulation), so that repeated forced circulation is formed, the temperature and the humidity are balanced and adjusted, and the purpose of simulating real working conditions is achieved.

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

The vibration table body comprises a support, a magnetic pole assembly, a driving assembly, a damping part, a support guide system, a shield and a vibration table top;

the magnetic pole assembly 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 shock insulation device adopts an air spring and is used for carrying out shock insulation on the whole vibrating 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, is positioned on the outer ring of the movable coil framework, comprises a roller and a U-shaped spring and is used for ensuring that the vibration table surface has good waveform, small distortion degree and small transverse vibration; the second guiding 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 protective cover comprises a first protective cover and a second protective cover, the first protective cover is arranged on the outer ring of the moving coil framework and positioned on the upper side of the magnetic pole assembly, and the second protective cover is arranged on the lower side of the magnetic pole assembly;

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

The magnetic pole assembly comprises a lower pole plate, a magnetic cylinder ring, an upper pole plate, a middle magnetic pole, a lower excitation coil and an upper excitation coil, wherein the magnetic cylinder ring is positioned between the lower pole plate and the upper pole plate, the middle magnetic pole is positioned in the magnetic cylinder ring, and the central axis of the middle magnetic pole, the central axis of the lower pole plate, the central axis of the upper pole plate and the central axis of the magnetic cylinder ring are collinear; the inner side of the middle part of the magnetic cylinder ring (namely, the side close to the middle magnetic pole) is protruded, a lower excitation coil is arranged on the lower side of the protruded part, an upper excitation coil is arranged on the upper part of the protruded part, and the laminated windings of the lower excitation coil and the upper excitation coil adopt a double-ring lap winding structure; through two magnetic circuit structure, not only provide more stable annular magnetic field, effectively reduce the magnetic leakage field intensity of mesa, overcome the inhomogeneous shortcoming of single line spool formula winding excitation coil inner and outer layer winding cooling simultaneously, guaranteed excitation coil winding refrigerated homogeneity, further improve the cooling effect, avoid the shaking table high temperature.

Preferably, 4 groups of 8 air springs are used for vibration isolation.

And further optimization is carried out, the horizontal sliding table adopts a T-shaped static pressure moving system and is used for bearing a vibrating table body, and the horizontal sliding table comprises a wallboard assembly, a connector, a horizontal table surface, a T-shaped static pressure guide rail, an oil source and a sliding table base.

The power amplifier is a digital power amplifier modulated by sine pulse width, which amplifies the low voltage signal input by the controller through a digital circuit and restores the signal into an original signal, and then outputs the original signal to a moving coil circuit of the vibration table body to push the vibration table to move.

Further optimizing, wherein the upper end surface 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.

Further optimization is carried out, the high-temperature-resistant fixing disc is sequentially provided with a first ceramic layer, a lamp holder middle heat-insulating layer and a second ceramic layer from top to bottom, the central axis of the first ceramic layer, the lamp holder middle heat-insulating layer and the second ceramic layer is collinear with the central axis of the annular side wall, and the diameters of the first ceramic layer and the second ceramic layer are smaller than the inner side 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 a heating lamp tube arranged on the upper side of the first ceramic layer are reflected, so that heat is effectively gathered on the upper side of the high-temperature-resistant fixed disk (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 disk (namely the second ceramic layer) is effectively reduced, and the influence of high temperature on a non-heating area is avoided; and secondly, the ceramic laminate can prevent deformation, so that inaccurate test results and even safety accidents caused by the thermal 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, the cooperation of pottery bottom surface layer, further with the heat gathering that the heating fluorescent tube produced at high temperature resistant fixed disk (being first ceramic layer) upside, with realize the rapid heating up of the upside zone of heating, avoid the non-zone of heating of downside to receive the high temperature influence, secondly through the flexible connection of lighting fixture middle part insulating layer and annular lateral wall, the vibration of avoiding the vibration connector influences high temperature heater (specifically is the heating fluorescent tube), thereby guarantee that vibration and heating do not influence each other, again to the test work piece that awaits measuring vibrate + hot coupling.

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

Further optimization is carried out, the heating lamp tube adopts 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 infinity-shaped structure, and no less than 5 heating lamp tubes are arranged; the part of the heating lamp tube, which is positioned on the upper side of the high-temperature resistant fixed disk (namely the first ceramic layer), is provided with a high-infrared short-wave quartz radiator so as to generate radiation short waves to realize heating; the part of the heating lamp tube, which is located on the lower side of the high-temperature-resistant fixing disc, is connected with a high-temperature wire, and one end, which is far away from the heating lamp tube, of the high-temperature wire sequentially penetrates through the inner heat-insulating layer, the annular side wall, the middle heat-insulating layer and the outer heat-insulating layer and is connected with the outer wall power supply device.

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

Further optimization is carried out, in order to realize further heat dissipation of the cavity at the lower side of the high-temperature resistant fixed disk (namely, the second ceramic layer), inaccurate test results and even safety accidents caused by high temperature of the cavity at the lower side of the high-temperature resistant fixed disk (namely, the second ceramic layer) are avoided; the annular side wall is positioned at the lower side of the high-temperature resistant fixed disk (namely the second ceramic layer), a plurality of radiating air pipes are uniformly arranged around the central axis of the annular side wall, and the radiating air pipes, the square through holes and the support ribs are in different positions; one end of the heat dissipation air pipe is communicated with the lower side cavity of the high-temperature-resistant fixed disc (namely the second ceramic layer), and the other end of the heat dissipation air pipe penetrates through the middle heat insulation layer and the external heat insulation layer respectively and is communicated with the 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).

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

Further optimized, a heater sensor and a lamp holder sensor are arranged in the cavity of the annular side wall; the testing end of the heater sensor is positioned between the heating lamp tubes on the upper side of the high-temperature resistant fixed disk (namely the first ceramic layer), the lower end of the testing end of the heater sensor penetrates through the high-temperature resistant fixed disk, and a connecting lead is arranged on the lower side of the high-temperature resistant fixed disk (namely the second ceramic layer); the lamp holder sensor is fixedly arranged on one support rod.

For further optimization, the water-cooling platform is respectively connected with the lower mounting disc and the vibrating table through arranging a first threaded hole and a second threaded hole; first screw hole is the blind hole from top to bottom, the second screw hole is the through-hole, sets up the blind hole and is convenient for the arrangement of cooling pipe, avoids screw hole and cooling pipe to interfere, secondly avoids the heat on the vibration connector directly to transmit the external world through the screw hole, thereby effectively ensures that the heat on the vibration connector is by the separation of water-cooling platform, thereby carries out the heat exchange, realizes the cooling with the cooling pipe.

Preferably, the thickness of the water-cooling platform is 18-22 mm; the thickness of the bottom 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 when receiving the interaction influence of the environment and the mechanics in the actual use process is truly reflected, and the improvement of the structure, the performance and the like of the plane equipment component and the evaluation of the service life of the component by researchers are facilitated. The vibration subsystem can perform tests such as sine, random, classical impact, resonance search and residence, sine plus random, random plus random, sine plus random and the like, and has various vibration types and wide vibration frequency range; meanwhile, the arrangement of the vibration flat wall type internal heat source subsystem can avoid the vibration interference of the high-temperature heater and the fixed lamp bracket (namely, the high-temperature heater and the fixed lamp bracket do not vibrate together with the vibration coupler) on the premise of realizing the common vibration of the vibration coupler and the workpiece to be tested, thereby effectively ensuring the heat-vibration coupling effect of the planar equipment component; the flat-wall type internal heat source subsystem can meet the requirements of a composite simulation working condition of broadband vibration of 1-2200 Hz at about 1200 ℃.

According to the vibration coupler, the inner cavity of the vibration coupler is divided into the heating area and the non-heating area 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), so that on the basis of realizing the rapid heating of the heating area and avoiding the heat overflow of the heating area, the heat is effectively isolated, and the influence of high temperature on the non-heating area is avoided, so that heating failure or other safety accidents are caused; the effective cooling of vibration coupler is realized through the setting of water-cooling platform, avoids causing because vibration coupler high temperature that the test result error is great, or heat source subsystem test inefficacy scheduling problem in the flat wall type.

Drawings

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

FIG. 2 is a schematic structural diagram of a vibration table of the vibration subsystem according to an embodiment of the present invention.

FIG. 3 is a schematic view of a horizontal sliding table of a vibration subsystem according to an embodiment of the present disclosure.

FIG. 4 is a schematic view of an overall structure of a flat-wall type internal heat source subsystem according to an embodiment of the present invention.

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

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

FIG. 7 is a front view of the high temperature heater and the fixed lamp holder of the flat wall type internal heat source subsystem in accordance with the exemplary embodiment of the present invention.

FIG. 8 is a rear view (opposite to the front view) of the high temperature heater and the fixed lamp holder of the flat-wall type internal heat source subsystem in accordance with the 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, 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. an intermediate magnetic pole; 1125. a lower excitation coil; 1126. an upper excitation coil; 113. a drive assembly; 1130. a moving coil framework; 114. a shock-absorbing member; 1151. a first guide device; 11511. a roller; 11512. a "U" shaped spring; 1152. a second guide means; 1161. a first shield; 1162. a second shield; 12. a horizontal sliding table; 121. a wall panel assembly; 122. a connector; 123. a horizontal table top; 124. t-shaped hydrostatic guideway and oil source; 125. a sliding table base; 20. a flat-wall type internal heat source subsystem; 21. a vibration coupler; 2101. an inner thermal insulation layer; 2102. an intermediate heat-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. a square through hole; 2122. a bottom layer heat insulation board; 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 fixing disc; 2210. a connecting bracket assembly; 2211. a first ceramic layer; 2212. a heat insulation layer in the middle of the lamp bracket; 2213. a second ceramic layer; 222. a lamp tube clamp; 223. heating the lamp tube; 23. a fixed lamp holder; 231. a support bar; 2310. a flexible heat insulating sheath; 232. supporting the 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 adjustment unit; 40. an airflow simulation subsystem; 41. a long axis fan; 42. a fan blade; 43. an adjustable air duct; 44. and a frequency converter.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example (b):

as shown in fig. 1 to 9, a multi-factor environmental simulation system vibrating under ultra-high temperature condition includes a test box main body 100, and is 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 airflow 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 airflow 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 equipment working conditions and comprises a vibration platform body 11, a horizontal sliding platform 12, a power amplifier, a cooling unit 32, a heat insulation pad and a controller; the vibration table body 11 comprises a support 111, a magnetic pole assembly 112, a driving assembly 113, a damping part 114, a support guide 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 (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 magnetic pole 1124 is positioned in the magnetic cylinder ring 1122, and the central axis of the middle magnetic pole 1124, the central axis of the lower pole plate 1121, the central axis of the upper pole plate 1123 and the central axis of the magnetic cylinder ring 1122 are collinear (as shown in fig. 2); the inner side of the middle portion (i.e., the side close to the middle magnetic pole 1124) of the cylinder ring 1122 protrudes, the lower side of the protruding portion is provided with a lower excitation coil 1125, the upper portion is provided with an upper excitation coil 1126 (as shown in fig. 2), and the laminated windings of the lower excitation coil 1125 and the upper excitation coil 1126 adopt a double-ring lap winding structure (i.e., the laminated windings are welded in series to form series connection in a circuit, and then the water inlet and the water outlet of each laminated winding are respectively connected in parallel to form parallel connection in a water path, which can be understood by those skilled in the art, the specific embodiment of the present application is not discussed much); through two magnetic circuit structure, not only provide more stable annular magnetic field, effectively reduce the magnetic leakage field intensity of mesa, overcome the inhomogeneous shortcoming of single line spool formula winding excitation coil inner and outer layer winding cooling simultaneously, guaranteed excitation coil winding refrigerated homogeneity, further improve the cooling effect, avoid the shaking table high temperature. The driving assembly 113 includes a driving coil and a moving coil bobbin 1130, the moving coil bobbin 1130 is disposed on the upper side of the middle portion of the magnetic pole assembly 112 (i.e. the moving coil bobbin 1130 is located in the cylinder coil 1122 and located 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 bobbin 1130; the vibration isolation device 114 adopts air springs for isolating the vibration of the whole vibrating table body 11 (as shown in fig. 2), and the air springs adopt 4 groups of 8 for isolating the vibration (the specific arrangement position of the air springs adopts the conventional design in the field, so that the vibration isolation frequency of the vibrating table body 11 can be controlled to be about 3Hz at the vertical position and about 2Hz at 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 (namely the upper pole 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 figure 2) for ensuring good wave form, small distortion degree and small transverse vibration of the vibration table; the second guide 1152 is a hydrostatic bearing located in the middle of the pole assembly 112 (shown in fig. 2) below the moving coil armature 1130; the shield includes a first shield 1161 and a second shield 1162, the first shield 1161 is disposed at the outer ring of the moving coil bobbin 1130 and is located on the upper side of the magnetic pole assembly 112 (i.e., the upper pole plate 1123), and the second shield 1162 is disposed on the lower side (as shown in fig. 2) of the magnetic pole assembly 112 (i.e., the lower pole plate 1121); the vibration table is located on the upper side of the moving coil frame 1130 (the position of the vibration table is 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 static pressure moving system for receiving the vibrating table body 11, and includes a wall plate assembly 121, a connector 122, a horizontal table surface 123, a "T" type static pressure guide rail and oil source 124, and a sliding table base 125 (as shown in fig. 3). The power amplifier adopts a digital power amplifier modulated by sine pulse width, amplifies a low-voltage signal input by a controller through a digital circuit and restores the low-voltage signal into an original signal, 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 power amplifier mainly comprises the following components: the system adopts a high-voltage and low-current output mode, reduces power loss in the transmission process, realizes effective and reasonable impedance matching, and the power amplifier adopts the conventional design known in the field. The cooling unit 32 can adopt a dual-circulation cooling mode, that is, the cooling unit 32 is respectively cooled by water flowing through the moving coil, the excitation coil and the short-circuit ring, and internal circulating water firstly flows through the moving coil, the excitation coil pipeline and the short-circuit ring cooling water pipeline to take away heat generated by the vibration table body 11 during working; then, heat exchange is performed by the heat exchanger in the cooling unit 32, and heat generated by the heat exchange in the heat exchanger is taken away 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 vibration table top and used for heat insulation. The controller can be a conventional 8-channel vibration controller in the field, and the functions of configuring vibration control software modules such as sine, random, classical impact, resonance search and residence, sine plus random, random plus random and the like are only required.

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 an integrally formed structure, and includes an upper mounting plate 211, an annular side wall 212, a lower mounting plate 213 and a support rib 214, wherein the middle portions 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 central axes of the upper mounting plate 211, the annular side wall 212 and the lower mounting plate 213 are collinear, a plurality of support ribs 214 are uniformly arranged on the outer ring of the annular side wall 212 around the central axis (the number of the support ribs 214 is determined according to the specific vibration simulation condition), and the support ribs 214 are respectively fixedly connected with the upper mounting plate 211 and the lower mounting plate 213; 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 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 includes a high temperature resistant fixing plate 221, a lamp tube fixture 222, and a heating lamp tube 223, where the high temperature resistant fixing plate 221 sequentially includes, from top to bottom, a first ceramic layer 2211, a lamp holder middle thermal insulation layer 2212, and a second ceramic layer 2213, the central axes of the first ceramic layer 2211, the lamp holder middle thermal 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 inside 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 as to avoid heat transfer), and the outer wall of the lamp holder middle thermal 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 thermal insulation layer 2212 is flexibly connected with the inner wall of the inner thermal 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 223 arranged on the upper side of the first ceramic layer 2211 are reflected, so that heat is effectively gathered on the upper side of the high-temperature resistant fixing disc 221 (namely, the first ceramic layer 2211), the workpiece 25 to be tested is rapidly heated, meanwhile, the temperature of the lower side of the high-temperature resistant fixing 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, thereby avoiding inaccurate test results and even safety accidents caused by the thermal deformation of the high-temperature resistant fixing disc 221 in the high-temperature heating process. By adopting the middle heat-insulating layer 2212 of the lamp holder, firstly, the middle heat-insulating layer 2212 is matched with the first ceramic layer 2211 and the ceramic bottom layer 2213, the heat generated by the heating lamp tube 223 is further gathered on the upper side of the high-temperature-resistant fixing disk 221 (namely the first ceramic layer 2211) so as to realize the rapid temperature rise of the upper heating area and avoid the influence of high temperature on the lower non-heating area, and secondly, the middle heat-insulating layer 2212 of the lamp holder is flexibly connected with the annular side wall 212 so as to avoid the influence of the vibration connector 21 on the high-temperature heater 22 (particularly the heating lamp tube 223) and further to ensure that the vibration and the heating are not influenced mutually and the vibration and the heat coupling are carried out on the test workpiece 25 to be tested; the thicknesses of the first ceramic layer 2211 and the second ceramic layer 2213 are both 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). The two ends of the upper end face of the high-temperature resistant fixed disk 221 are respectively and fixedly provided with a lamp tube clamp 222, the middle part of the upper end face of the high-temperature resistant fixed disk 221, which is positioned between the two lamp tube clamps 222, is uniformly provided with a plurality of heating lamp tubes 223, the heating lamp tubes 223 are parallel to each other (the heating lamp tubes 223 adopt quartz outer tubes), the two ends of each heating lamp tube 223 are respectively fixed by the lamp tube clamps 222 at the two ends, and one end of each heating lamp tube 223 penetrates through the high-temperature resistant fixed disk 221 and is positioned in a cavity at the lower side of the high-temperature resistant fixed disk 221; specifically, the heating lamp tube 223 has a double-hole tube structure, which is an "L" -shaped structure as a whole and has a cross section of an "∞" -shaped structure (that is, one end of the "L" -shaped corner of the heating lamp tube 223 is fixed by the corresponding lamp tube fixture 222, penetrates through the high temperature resistant fixing disk 221 and is located in a cavity on the lower side of the high temperature resistant fixing disk 221, as shown in fig. 5 and 7), and at least 5 heating lamp tubes 223 (6 heating lamp tubes are shown in fig. 7 and are determined according to specific heating temperature and sizes of the heating lamp tubes 223); a high infrared short-wave quartz radiator is arranged at the part of the heating lamp tube 223, which is positioned at the upper side of the high temperature resistant fixed disk 221 (i.e. the first ceramic layer 2211), so as to generate radiation short waves 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 part of the heating lamp tube 223, which is located on the lower side of the high temperature resistant fixing disc 221, is connected with a high temperature electric wire 2106 (i.e. one end of the corner of the "L" shape of the heating lamp tube 223), and one end of the high temperature electric wire 2106, which is 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.

The annular sidewall 212 is located under the high temperature resistant fixing disk 221 and symmetrically opens a plurality of square through holes 2121 around its central axis, the square through holes 2121 and the supporting ribs 214 are dislocated (i.e. the square through holes 2121 and the supporting ribs 214 do not interfere with each other), the fixing lamp holder 23 includes 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 symmetrical square through holes 2121 and are fixedly connected with the supporting truss 232, and a portion of the supporting rod 231 located in the cavity is fixedly connected with the lower end surface of the high temperature resistant fixing disk 221 (i.e. the second ceramic layer 2213) through a connecting support 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 disc 213, a plurality of cooling guide 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 vibration table; the water-cooling platform 24 is respectively connected with the lower mounting plate 213 and the vibration table through arranging a first threaded hole 242 and a second threaded hole 243; first screw hole 242 is the blind hole from top to bottom, and second screw hole 243 is the through-hole, sets up the blind hole and is convenient for cooling pipe 241 arrange, avoids screw hole and cooling pipe 241 to interfere, and is secondly avoided the heat on the vibration coupler 21 directly to transmit the external world through the screw hole, effectively ensures that the heat on the vibration coupler 21 is by the separation of water-cooling platform 24, thereby carries out the heat exchange, realizes the cooling with cooling pipe 241. The thickness of the water-cooling platform 24 is 18-22 mm, and preferably 20 mm.

An inner heat insulation layer 2101 is uniformly arranged on the inner wall of the annular side wall 212, a middle heat insulation layer 2102 is uniformly wrapped on the outer wall of the annular side wall 212, an outer heat insulation layer 2103 (shown in fig. 5) is uniformly arranged at the upper end of the upper mounting disc 211 and on the outer wall of the supporting rib 214, a flexible heat insulation sheath 2310 (shown in fig. 4 and fig. 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 mounting disc 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 disk 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 disk 221 (i.e., the second ceramic layer 2213) are avoided; the annular sidewall 212 is located under the high temperature resistant fixing disk 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 sidewall 212, and the heat dissipation air pipes 2123 are all located at different positions with respect to 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 dissipating air pipe 2123 is communicated with the lower cavity of the high temperature resistant fixing disk 221 (i.e., the second ceramic layer 2213), and the other end thereof penetrates through the middle heat insulating layer 2102 and the outer heat insulating layer 2103 and is communicated with the external air cooling device (the heat dissipating 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, i.e., the heat dissipating air pipe 2123 arranged on the annular sidewall 212 is divided into an air inlet pipe and an air outlet pipe, and the heat dissipating air pipe is divided into an air outlet pipe and an air inlet pipe according to the air inlet and the air outlet of the heat dissipating air pipe and the external air cooling device, as will be understood by those skilled in the art, the specific embodiment of the present application is not discussed much).

A heater sensor 2104 and a lamp holder sensor 2105 are also disposed in the cavity of the annular sidewall 212; the test end of the heater sensor 2104 is located between the heating lamps 223 on the upper side of the high temperature resistant fixing disk 221 (i.e., the first ceramic layer 2211), the lower end thereof penetrates through the high temperature resistant fixing disk 221, and the connecting wires are arranged on the lower side of the high temperature resistant fixing disk 221 (i.e., the second ceramic layer 2213); the lamp holder sensor 2105 is fixedly disposed on a support rod 231 (as shown in fig. 5 and 8).

Preferably, the lamp holder 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 are made of fiber reflection type materials; the fiber reflection type material is formed by alternately stacking and laying heat insulation layers and reflection layers and is coated by fiber cloth, wherein the heat insulation layers are made of one or more of aluminum silicate fibers, magnesium silicate fibers, aerogel felts and ceramic fiber felts; the reflecting layer is one or more of molybdenum foil, nickel foil, stainless steel foil, aluminum foil and double-sided aluminum-plated polyimide film.

The warm and humid environment subsystem 30 includes an air conditioning unit 31, a cooling unit 32 (the same cooling unit 32 is used as the cooling unit 32 of the vibration subsystem 10), 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 adjusting unit 33 includes a humidification system and a dehumidification system; the air temperature and humidity in the test box main body (mainly a test working chamber) are regulated through the refrigeration 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 (capable of adopting fan circulation), so that repeated forced circulation is formed, the temperature and humidity balance regulation is carried out, and the purpose of simulating real working conditions is achieved. 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 compressor in an adiabatic way, the exhaust temperature is increased due to work consumption, the refrigerant exchanges heat with surrounding media through the condenser, then works through the throttle valve in an adiabatic expansion way, 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 object to be cooled is reduced, and refrigeration is performed through circulation. The humidifying system adopts electric heating steam for humidifying, and the dehumidifying system adopts a condensing method for dehumidifying.

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

The working principle is as follows:

when the device is used, a workpiece 25 to be tested is fixedly arranged on the upper end face of the upper mounting plate 211 and positioned between the external heat insulation layers 2103, as shown in fig. 4, and meanwhile, the bottom face of the workpiece 25 to be tested and the top face of the upper mounting plate 211 are ensured to form sealing. Then starting the vibration table body 11 to drive the water cooling platform 24 and the vibration coupler 21 to vibrate together, thereby driving the workpiece 25 to be tested on the vibration coupler 21 to vibrate, and carrying out vibration working condition simulation, then starting a high infrared short wave quartz radiator, wherein the wavelength of the high infrared short wave quartz radiator is 0.75-1.4 mu m, a filament is subjected to pressure sealing and vacuum pumping treatment by adopting tungsten filaments and lamp tubes, and special protective gas is filled in the filament; the specific wavelength characteristic of the short wave enables the heating penetrating power to be stronger, the reaction time to be faster, the temperature of the filament can reach 1800-2400 ℃, meanwhile, the quartz outer tube can continuously and stably work in the environment of more than 1000 ℃, and the quartz outer tube 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 matching effect of the first ceramic layer 2211, the lamp holder middle heat insulation layer 2212 and the second ceramic layer 2213, heat overflow is effectively avoided, so that the temperature in the cavity between the high temperature resistant fixing disc 221 and the workpiece 25 to be tested is rapidly increased to reach a simulation temperature, and internal thermal environment simulation of the workpiece 25 to be tested is realized. Because the high temperature resistant fixing disc 221 is supported and fixed by the supporting rod 231, the supporting rod 231 is fixedly connected with the supporting truss 232 (the supporting truss 232 is fixedly arranged in the environmental simulation test box), the supporting rod 231 is flexibly connected with the square through hole 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 does not cause the vibration of the fixed lamp holder 23 and further the vibration of the high temperature heater 22, thereby realizing the effective coupling of heat and vibration. In the thermal-vibration coupling process, the cooling water is introduced into the cooling conduit 241 to cool the entire vibration coupling 21 and prevent the vibration coupling 21 from being overheated.

In the vibration and internal heat high-temperature coupling simulation environment, the greenhouse environment simulation subsystem 30 and the airflow simulation subsystem 40 are simultaneously started to respectively simulate the external temperature, the humidity and the airflow environment.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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. A multi-factor environmental simulation system of vibration under ultra-high temperature condition, includes test box main part (100), its characterized in that: 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 airflow 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 holder (23) and a water cooling platform (24); the vibration coupler (21) is of an integrally formed structure and comprises an upper mounting disc (211), an annular side wall (212), a lower mounting disc (213) and support ribs (214), wherein through holes are formed in the middle parts of the upper mounting disc (211) and the lower mounting disc (213), the bottom surface of the upper mounting disc (211) is fixedly connected with the top surface of the lower mounting disc (213) through the annular side wall (212), the central axes of the upper mounting disc (211), the annular side wall (212) and the lower mounting disc (213) are collinear, a plurality of support ribs (214) are uniformly arranged on the outer ring of the annular side wall (212) and around the central axis of the annular side wall, and the support ribs (214) are fixedly connected with the upper mounting disc (211) and the lower mounting disc (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 disc (221), lamp tube clamps (222) and heating lamp tubes (223), two ends of the upper end face of the high-temperature-resistant fixing disc (221) are respectively and fixedly provided with the lamp tube clamps (222), the middle part of the upper end face of the high-temperature-resistant fixing disc (221) is positioned between the two lamp tube clamps (222), a plurality of heating lamp tubes (223) are uniformly arranged between the two lamp tube clamps (222), the heating lamp tubes (223) are mutually parallel, two ends of each heating lamp tube (223) are respectively fixed by the lamp tube clamps (222) at two ends, and one end of each heating lamp tube (223) penetrates through the high-temperature-resistant fixing disc (221) and is positioned in the cavity on the lower side of the high-temperature-resistant fixing disc (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) and the support ribs (214) are in different positions, the fixed lamp holder (23) comprises a support rod (231) and a support truss (232), the support rod (231) corresponds to the square through holes (2121), two ends of the support rod (231) respectively penetrate through the two symmetrical square through holes (2121) and are fixedly connected with the support truss (232), and the part of the support 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 disc (213), a plurality of cooling guide 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 vibration table; insulating layer (2102) in the middle of annular lateral wall (212) inner wall evenly sets up inside insulating layer (2101) and annular lateral wall (212) outer wall even parcel, upper portion mounting disc (211) upper end and support rib (214) outer wall evenly set up outside insulating layer (2103), parcel flexible thermal-insulated sheath (2310) between bracing piece (231) and square through hole (2121), set up bottom heat insulating board (2122) in the cavity between water-cooling platform (24) and bracing piece (231), bottom heat insulating board (2122) are parallel and bottom heat insulating board (2122) all around with inside insulating layer (2101) inner wall fixed connection with upper portion mounting disc (211).

2. The multi-factor environmental simulation system for vibration under ultra-high temperature conditions according to claim 1, wherein: the simulation system further comprises a comprehensive control system.

3. The multi-factor environmental simulation system for vibration under ultra-high temperature conditions according to claim 1 or 2, wherein: the warm and humid environment subsystem (30) comprises an air conditioning unit (31), a cooling unit (32) and a humidity conditioning unit (33); the air conditioning unit (31) comprises an air heating device, an air cooling device and an air circulating device; the cooling unit (32) is a refrigeration compressor; the humidity adjusting unit (33) comprises a humidifying system and a dehumidifying system.

4. The multi-factor environmental simulation system for vibration under ultra-high temperature conditions according to any one of claims 1 to 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 the side wall of one side of the test box main body (100), and an output shaft of the long-axis fan is positioned in the test box main body (400) and is fixedly connected with the fan blades (42) positioned in the adjustable air duct (43); the adjustable air duct (43) is positioned inside the test working chamber; the frequency converter (44) is arranged on the test box main body (100).

5. The multi-factor environment simulation system capable of vibrating under the condition of ultrahigh temperature according to any one of claims 1 to 4, characterized in that: the vibration table body (11) comprises a support (111), a magnetic pole assembly (112), a driving assembly (113), a damping part (114), a support guide 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 part of the magnetic pole assembly (112), and the driving coil is wound on the moving coil framework (1130);

the shock isolation device (114) adopts an air spring;

the support guide system comprises a first guide device (1151) and a second guide device (1152), wherein the first guide device (1151) is arranged on the upper side of the magnetic pole assembly (112) and is 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) on the lower side of the moving coil framework (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 framework (1130) and located 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 vibration table top is positioned on the upper side of the moving coil framework (1130).

6. The multi-factor environmental simulation system for vibration under ultra-high temperature conditions 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 excitation coil (1125) and an upper excitation coil (1126), wherein the magnetic cylinder ring (1122) is located between the lower pole plate (1121) and the upper pole plate (1123), the middle magnetic pole (1124) is located in the magnetic cylinder ring (1122), and the central axis of the middle magnetic pole (1124), the central axis of the lower pole plate (1121), the central axis of the upper pole plate (1123) and the central axis of the magnetic cylinder ring (1122) are collinear; the inside protrusion in magnetic cylinder circle (1122) middle part and protrusion below side set up down excitation coil (1125), upper portion set up excitation coil (1126), excitation coil (1125) and last excitation coil (1126) lamination winding adopt two circles lap winding structure down.

7. The multi-factor environmental simulation system for vibration under ultra-high temperature conditions according to claim 1, wherein: a workpiece (25) to be tested is arranged on the upper end surface of the upper mounting plate (211), 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 multi-factor environmental simulation system for vibration under ultra-high temperature conditions according to claim 1, wherein: high temperature resistant fixed disk (221) is first ceramic layer (2211), lighting fixture middle part insulating layer (2212), second ceramic layer (2213) from top to bottom in proper order, the axis of first ceramic layer (2211), lighting fixture middle part insulating layer (2212), second ceramic layer (2213) is less than annular lateral wall (212) inboard diameter with the diameter of annular lateral wall (212) axis collineation and first ceramic layer (2211), second ceramic layer (2213), lighting fixture middle part insulating layer (2212) outer wall and annular lateral wall (212) inner wall flexible connection.

9. The multi-factor environmental simulation system for vibration under ultra-high temperature conditions according to claim 1, wherein: the heating lamp tubes (223) are of a double-hole tube structure, the whole heating lamp tubes are of an L-shaped structure, the cross sections of the heating lamp tubes are of an infinity-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) located on the lower side of the high-temperature-resistant fixing disc (221) is connected with a high-temperature wire (2106), and one end, far away from the heating lamp tube (223), of the high-temperature wire (2106) 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 multi-factor environmental simulation system for vibration under ultra-high temperature conditions of claim 1, wherein: the annular side wall (212) is positioned at the lower side of the high-temperature resistant fixed disk (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 support ribs (214) are all heterotopic; heat dissipation tuber pipe (2123) one end and high temperature resistant fixed disk (221) downside cavity intercommunication, the other end runs through middle insulating layer (2102), outside insulating layer (2103) respectively and communicates with outside air cooling device.