An environmental simulation system coupling internal heat sources and vibrations

Abstract

The present invention provides an environmental simulation system coupling an internal heat source and vibration, which includes a vibration subsystem and an internal heat source simulation subsystem; the vibration subsystem includes a vibration table body (11), a horizontal slide table (12), a power amplifier, a cooling unit, a heat insulation pad and a controller; the internal heat source simulation subsystem is fixedly arranged on the end face of the vibration table body (11), and includes a vibration coupler (21), an infrared heating assembly (22), a heat insulation and heat preservation layer (23), a lamp holder assembly (24) and a water-cooled platform (25). This environmental simulation system can effectively couple vibration with internal heat and high temperature, truly simulate the environment under the actual use or storage conditions of the equipment, and ensure the authenticity, accuracy and effectiveness of the simulation test results.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental simulation tests, and particularly relates to an environmental simulation system coupling an internal heat source and vibration. Background Art

[0002] Comprehensive environmental simulation testing is an environmental simulation test integrating vibration control, high-temperature control, high-pressure control, and / or humidity, salt spray resistance, etc., and can be used as a simulation test method in the field of reliability verification such as aerospace, plateau highway transportation, electronic products, etc. In recent years, with the development of technology, the requirements for equipment such as aerospace, plateau highway transportation, and electronic products have become higher and higher, and thus the requirements for environmental aging simulation experiments have gradually increased.

[0003] The environmental simulation test equipment in the prior art has problems such as a single simulated environmental factor or incomplete simulated environmental factors, resulting in the inability of the environmental simulation equipment to truly simulate the environmental conditions such as the use and storage of products, and thus unable to accurately evaluate the performance indicators of the equipment and equipment materials. For example, under the coupling of vibration and temperature, the highest simulated temperature of the existing environmental simulation equipment can only reach 300°C, while during the use of products, especially products located in the power source area, they are affected by the atmospheric environmental temperature and at the same time are affected by the internal high-temperature environment, and these temperatures generally reach above 800°C after fitting; it can be seen that when the existing environmental simulation equipment is coupled with vibration and temperature, the simulated temperature has a large difference from the temperature in the actual use conditions of the equipment, resulting in the inability to accurately evaluate the use performance of the equipment, and the interaction between the equipment under high temperature and vibration will cause a certain degree of loss of its functions, performance, and lifespan, and even lead to the occurrence of safety accidents. Therefore, accurately simulating the environment under the coupling of vibration + temperature during the actual use process of the equipment not only provides important technical support for studying the evolution laws of the use performance and service life of products under the influence of the environment, but also provides an effective guarantee for reducing the occurrence of safety accidents and ensuring the safety of users' lives. Summary of the Invention

[0004] Aiming at the problems existing in the above prior art, the purpose of the present invention is to provide an environmental simulation system coupling an internal heat source and vibration to achieve the effective coupling of vibration and internal heat high temperature, truly simulate the environment under the actual use or storage conditions of the equipment, and ensure the authenticity, accuracy, and effectiveness of the simulation test results.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] An environmental simulation system coupling an internal heat source and vibration, characterized in that: it includes a vibration subsystem and an internal heat source simulation subsystem; the vibration subsystem is used to simulate the vibration environmental factors under the equipment conditions, including a vibration table body, a horizontal sliding table, a power amplifier, a cooling unit, a heat insulation pad, and a controller;

[0007] The internal heat source simulation subsystem is fixedly arranged on the end face of the vibration table body and is used to simulate the high-temperature thermal radiation environmental factors under the equipment working conditions, including a vibration coupler, an infrared heating assembly, a heat insulation layer, a lamp holder assembly and a water-cooled platform; the vibration coupler includes two fixed brackets and a support pipe body, both of the two fixed brackets are arched structures and a through hole is opened in the middle of each of them, the two ends of the support pipe body respectively penetrate through the corresponding through holes of the two side fixed brackets and the outer wall of the support pipe body is closely attached to the inner wall of the through hole, and the outer wall of the support pipe body between the two fixed brackets is used for installing the workpiece to be tested; the infrared heating assembly includes quartz lamp tubes, lamp tube clamps, high-infrared short-wave quartz radiators and power supply wires, there are multiple quartz lamp tubes, which are uniformly arranged inside the support pipe body around the central axis of the support pipe body and the quartz lamp tubes do not interfere with the inner wall of the support pipe body, the two ends of the quartz lamp tubes respectively penetrate through the two ends of the support pipe body and are respectively connected to a lamp tube clamp, high-infrared short-wave quartz radiators are arranged in the middle of the quartz lamp tubes and corresponding to the workpiece to be tested, and power supply wires are arranged on one end of the quartz lamp tubes and on the side of the lamp tube clamp away from the vibration coupler, for energizing the high-infrared short-wave quartz radiators; the heat insulation layer includes a coupler heat insulation layer and a flexible heat insulation layer, the coupler heat insulation layer is uniformly coated on the outer side of the fixed bracket, and the flexible heat insulation layer is coated between the lamp tube clamp and the fixed bracket and the flexible heat insulation layer is flexibly connected to the lamp tube clamp and the fixed bracket respectively; the lamp holder assembly includes a support frame and a support truss, the two ends of the support frame are respectively fixedly connected to the lamp tube clamp and the upper end of the support frame is fixedly connected to the support truss, for realizing that during the vibration of the vibration coupler, the infrared heating assembly remains stationary and avoiding the mutual influence between vibration and heating; the upper end face of the water-cooled platform is fixedly connected to the fixed bracket and the lower end face is fixedly connected to the vibration table, and a plurality of cooling pipes are uniformly distributed inside the water-cooled platform.

[0008] For further optimization, the vibration table body includes a frame support, a magnetic circuit assembly, a moving part, a vibration isolation device, a support and guiding system, a shield and a vibration table top;

[0009] The magnetic circuit assembly is arranged at the lower part in the middle of the frame support;

[0010] The moving part includes a driving coil and a moving coil skeleton, the moving coil skeleton is arranged on the upper side in the middle of the magnetic circuit assembly, and the driving coil is wound on the moving coil skeleton;

[0011] The vibration isolation device adopts an air spring and is used for isolating the vibration of the whole vibration table body;

[0012] The described support and guiding system includes an upper guiding device and a lower guiding device. The upper guiding device is arranged on the upper side of the magnetic circuit assembly and is located outside the moving coil skeleton, and includes rollers and a "U" - shaped spring, which is used to ensure that the vibration table has a good waveform, low distortion, and small lateral vibration; the lower guiding device is a hydrostatic bearing and is located in the middle of the magnetic circuit assembly on the lower side of the moving coil skeleton.

[0013] The described protective cover includes an upper protective cover and a lower protective cover. The upper protective cover is arranged outside the moving coil skeleton and on the upper side of the magnetic circuit assembly, and the lower protective cover is arranged on the lower side of the magnetic circuit assembly.

[0014] The described vibration table is located on the upper side of the moving coil skeleton.

[0015] For further optimization, the magnetic circuit assembly includes a lower pole plate, a magnetic cylinder ring, an upper pole plate, a central magnetic pole, a first excitation coil, and a second excitation coil. The magnetic cylinder ring is located between the lower pole plate and the upper pole plate. The central magnetic pole is located inside the magnetic cylinder ring, and the central axis of the central 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 (i.e., the side close to the central magnetic pole) protrudes, and the first excitation coil is arranged on the lower side of the protruding part, and the second excitation coil is arranged on the upper part. The first excitation coil and the second excitation coil are laminated windings with a double - layer overlapping winding structure. Through the double - magnetic - circuit structure, not only a more stable annular magnetic field is provided, effectively reducing the leakage magnetic field intensity of the tabletop, but also the disadvantage of uneven cooling of the inner and outer layer windings of the single - wire spool - type winding excitation coil is overcome, ensuring the uniformity of the cooling of the excitation coil winding, further improving the cooling effect, and avoiding the high temperature of the vibration table.

[0016] Preferably, 4 groups of 8 air springs are used for vibration isolation.

[0017] For further optimization, the horizontal sliding table adopts a "T" - type hydrostatic movable system for receiving the vibration table body, and includes a wallboard assembly, a connecting head, a horizontal tabletop, a "T" - type hydrostatic guide rail, an oil source, and a sliding table base.

[0018] For further optimization, the power amplifier adopts a digital power amplifier with sine pulse width modulation. It amplifies the low - voltage signal input by the controller through a digital circuit and restores it to the original signal, and then outputs it to the moving coil circuit of the vibration table body to drive the vibration tabletop to move.

[0019] For further optimization, to ensure that the heat of the infrared heating component in the support pipe body can be better transferred to the outside of the support pipe body, the wall thickness of the support pipe body is 4 mm.

[0020] For further optimization, the quartz lamp tube adopts a double-hole tube structure, and its cross-section is in the shape of an "∞"; and there are no less than 5 quartz lamp tubes, which are evenly distributed around the central axis of the support tube body. Through the structure and position arrangement of the quartz lamp tubes, it is ensured that the radiation area can completely cover the wall of the support tube body, thereby ensuring the uniformity of heating and avoiding the problem of local temperature difference; at the same time, the "∞" structure of the double-hole tube has stronger anti-interference ability, more uniform radiation range and better mechanical properties.

[0021] For further optimization, the length of the high-infrared short-wave quartz radiator (i.e., the effective heating length) is 180 - 260 mm.

[0022] For further optimization, a temperature sensor is arranged inside the quartz lamp tube and the temperature sensor is located on the central axis of the support tube body for monitoring the temperature of the high-infrared short-wave quartz radiator.

[0023] For further optimization, the lamp tube fixture includes a sealing frame and a clamping member. The two ends of the quartz lamp tube respectively penetrate the bottom surface of the corresponding sealing frame, and a plurality of clamping members are arranged on the side surface of the sealing frame corresponding to the quartz lamp tube; the clamping member includes a spring clamp, an adjusting member, a bolt, a nut and a ceramic pad. The clamping part of the spring clamp is arranged corresponding to the quartz lamp tube and is used for stably clamping the quartz lamp tube. The adjusting member is arranged on the adjusting part of the spring clamp and is used for adjusting the clamping part according to the size of the quartz lamp tube. One end of the bolt is fixedly connected with the spring clamp, and the other end penetrates the side wall of the sealing frame, and a ceramic pad and a nut are arranged on the outer wall of the sealing frame in sequence from near the spring clamp to far away.

[0024] For further optimization, both the connector insulation layer and the flexible heat insulation layer adopt fiber reflective materials; the fiber reflective material is formed by alternately stacking and laying an insulation layer and a reflective layer and is wrapped with a fiber cloth. The insulation layer adopts one or more of aluminum silicate fiber, magnesium silicate fiber, aerogel felt, and ceramic fiber felt; the reflective layer adopts one or more of molybdenum foil, nickel foil, stainless steel foil, aluminum foil, and double-sided aluminized polyimide film; the connector insulation layer is wrapped on the outer wall of the fixed bench by spot welding; the flexible heat insulation layer is flexibly connected to the fixed bench and the lamp tube fixture (i.e., the sealing frame) respectively, so as to ensure that when the vibration connector moves up and down and left and right due to vibration, the infrared heating component will not vibrate; at the same time, the flexible heat insulation layer blocks the heat generated inside the support tube body by the infrared heating component and avoids the heat inside the support tube body from overflowing, thereby realizing the coupling of the vibration mechanical environment and the thermal environment factors.

[0025] For further optimization, the thickness of the water-cooled platform is 18 - 22 mm.

[0026] For further optimization, the water-cooling platform is fixedly connected to the fixed bench and the vibration table respectively by setting a first threaded hole and a second threaded hole; the first threaded hole is a blind hole from top to bottom, and the second threaded hole is a through hole. Setting the blind hole is convenient for the arrangement of the cooling pipe and to avoid interference between the threaded hole and the cooling pipe. Second, it can prevent the heat on the fixed bench from being directly transferred to the outside through the threaded hole, effectively ensuring that the heat on the fixed bench is blocked by the water-cooling platform, thereby exchanging heat with the cooling pipe to achieve temperature reduction.

[0027] For further optimization, connection plugs are respectively arranged at both ends of the cooling pipe, and the connection plugs are connected to an external hose. The end of the hose far from the connection plug is communicated with an external circulating cooling water unit.

[0028] The present invention has the following technical effects:

[0029] Through the cooperation of the vibration table body, the horizontal sliding table, the power amplifier, the cooling unit, the heat insulation pad and the controller, the present application can truly and effectively simulate the vibration environment conditions of the equipment. Through appropriate signals of the controller, tests such as sine, random, classical shock, resonance search and dwell, sine plus random, random plus random, sine plus random, etc. can be carried out. At the same time, through the cooperation of the vibration coupler, the infrared heating component, the heat insulation and heat preservation layer, the lamp holder component and the water-cooling platform, on the premise that the vibration sub-system drives the vibration coupler to vibrate, the infrared heating component is prevented from being interfered by vibration, thereby avoiding damage to the heater caused by vibration or safety accidents caused by the high temperature of the heater, effectively ensuring the coupling effect of the internal heat source - vibration. The environmental simulation system of the present application can meet the use requirements of the composite environmental simulation conditions of about 1200 °C and a wide frequency vibration of 1 - 2200 Hz. Moreover, through the setting of the infrared heating component and the vibration coupler in the environmental simulation system of the present application, uniform radiant heating of various parts of the tubular structural component can be realized, avoiding problems such as large errors in test results caused by uneven heating or the lack of integrity of the simulated test results; through the cooperation of the heat insulation and heat preservation layer with the vibration coupler and the infrared heating component, heat leakage can be effectively avoided, thereby ensuring rapid reaching of the specified temperature, saving energy, ensuring the heating effect, and avoiding heat leakage from affecting the external environment and equipment. Description of the Drawings

[0030] Figure 1 It is a structural schematic diagram of the vibration table body of the vibration sub-system in the embodiment of the present invention.

[0031] Figure 2 It is a structural schematic diagram of the horizontal sliding table of the vibration sub-system in the embodiment of the present invention.

[0032] Figure 3 It is a structural schematic diagram of the overall structure of the internal heat source simulation sub-system in the embodiment of the present invention.

[0033] Figure 4This is the front view structure diagram of the internal heat source simulation subsystem in the embodiment of the present invention.

[0034] Figure 5 It is Figure 4 the A-A sectional view of.

[0035] Figure 6 This is the structure diagram of the vibration coupler and the infrared heating component of the internal heat source simulation subsystem in the embodiment of the present invention.

[0036] Figure 7 It is Figure 6 the B-direction view structure diagram of.

[0037] Figure 8 This is the structure diagram of the water-cooling platform of the internal heat source simulation subsystem in the embodiment of the present invention.

[0038] Among them, 11 is the vibration table body; 111 is the frame support; 112 is the magnetic circuit component; 1121 is the lower pole plate; 1122 is the magnetic cylinder ring; 1123 is the upper pole plate; 1124 is the central magnetic pole; 1125 is the first excitation coil; 1126 is the second excitation coil; 113 is the moving part; 1130 is the moving coil skeleton; 114 is the vibration isolation device; 1151 is the upper guiding device; 11511 is the roller; 11512 is the "U" - shaped spring; 1152 is the lower guiding device; 1161 is the upper shield; 1162 is the lower shield; 12 is the horizontal sliding table; 121 is the wall panel component; 122 is the connector; 123 is the horizontal tabletop; 124 is the "T" - type hydrostatic guide and oil source; 125 is the sliding table base; 21 is the vibration coupler; 211 is the fixed mounting bracket; 212 is the support tube body; 22 is the infrared heating component; 221 is the quartz lamp tube; 222 is the lamp tube fixture; 2221 is the sealing frame; 2222 is the clamping part; 22221 is the spring clamp; 22222 is the adjusting part; 22223 is the bolt; 22224 is the nut; 22225 is the ceramic spacer; 223 is the high - infrared short - wave quartz radiator; 224 is the power supply wiring; 23 is the heat insulation layer; 231 is the coupler heat insulation layer; 232 is the flexible heat insulation layer; 24 is the lamp holder assembly; 241 is the support frame; 242 is the support truss; 25 is the water - cooling platform; 251 is the cooling pipe; 2510 is the connector plug; 252 is the first threaded hole; 253 is the second threaded hole; 26 is the workpiece to be tested. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0040] Embodiment:

[0041] As Figures 1 to 8As shown in the figure, an environmental simulation system coupling an internal heat source and vibration, characterized in that: it includes a vibration subsystem and an internal heat source simulation subsystem; the vibration subsystem is used to simulate the vibration environmental factors under equipment conditions, including a vibration table body 11, a horizontal slide 12, a power amplifier, a cooling unit, a heat insulation pad and a controller; the vibration table body 11 includes a frame support 111, a magnetic circuit assembly 112, a moving part 113, a vibration isolation device 114, a support and guiding system, a shield and a vibration table surface; the magnetic circuit assembly 112 is arranged at the lower part in the middle of the frame support 111 (as Figure 1 shown); it includes a lower pole plate 1121, a magnetic cylinder ring 1122, an upper pole plate 1123, a central magnetic pole 1124, a first excitation coil 1125 and a second excitation coil 1126. The magnetic cylinder ring 1122 is located between the lower pole plate 1121 and the upper pole plate 1123. The central magnetic pole 1124 is located inside the magnetic cylinder ring 1122, and the central axis of the central 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 Figure 1 shown); the inner side of the middle part of the magnetic cylinder ring 1122 (i.e., the side close to the central magnetic pole 1124) protrudes, and a first excitation coil 1125 is arranged on the lower side of the protruding part and a second excitation coil 1126 is arranged on the upper part (as Figure 1 shown). The first excitation coil 1125 and the second excitation coil 1126 are laminated windings with a double-turn laminated winding structure (that is, first connect the laminated windings in series and weld them to form a series connection in the circuit, and then connect the water inlets and outlets of each laminated winding in parallel respectively to form a parallel connection in the water circuit. Those skilled in the art can understand that the specific implementation manner of this application will not be elaborated too much). Through the double magnetic circuit structure, not only a more stable circular magnetic field is provided, effectively reducing the leakage magnetic field intensity of the table surface, but also the disadvantage of uneven cooling of the inner and outer layer windings of the single-wire spool type winding excitation coil is overcome, ensuring the uniformity of the cooling of the excitation coil winding, further improving the cooling effect and avoiding the high temperature of the vibration table. The moving part 113 includes a driving coil and a moving coil skeleton 1130. The moving coil skeleton 1130 is arranged on the upper side of the middle part of the magnetic circuit assembly 112 (that is, the moving coil skeleton 1130 is located inside the magnetic cylinder ring 1122 and above the central magnetic pole 1124, as Figure 1 shown), and the driving coil is wound around the moving coil skeleton 1130; the vibration isolation device 114 uses an air spring to isolate the vibration of the entire vibration table body 11 (as Figure 1 shown), and 4 groups of 8 air springs are used for vibration isolation (the specific installation position of the air spring adopts the conventional design in the art, and the vibration isolation frequency of the vibration table body 11 can be controlled at about 3 Hz in the vertical position and about 2 Hz in the horizontal position). The support and guiding system includes an upper guiding device 1151 and a lower guiding device 1152. The upper guiding device 1151 is arranged on the upper side of the magnetic circuit assembly 112 (that is, the upper pole plate 1123) and outside the moving coil skeleton 1130, and includes rollers 11511 and a "U" - shaped spring 11512 (asFigure 1 As shown), it is used to ensure that the vibration table has a good waveform, low distortion, and low lateral vibration; the lower guide device 1152 is a static pressure bearing, which is located in the middle of the magnetic circuit component 112 on the lower side of the dynamic coil frame 1130 (as shown in FIG. Figure 1 As shown); the shield includes an upper shield 1161 and a lower shield 1162, the upper shield 1161 is arranged on the outer ring of the moving coil frame 1130 and is located on the upper side of the magnetic circuit component 112 (i.e., the upper pole plate 1123), and the lower shield 1162 is arranged on the lower side of the magnetic circuit component 112 (i.e., the lower pole plate 1121) (as shown); Figure 1 As shown); the vibration table is located on the upper side of the dynamic coil frame 1130 (the position of the vibration table is understandable to those skilled in the art, so it is not specifically marked in the drawings of this application specification). The horizontal slide 12 adopts a "T"-shaped static pressure movable system to support the vibration table body 11, including a wall panel assembly 121, a connector 122, a horizontal table surface 123, a "T"-shaped static pressure guide rail and oil source 124, and a slide base 125 (as shown). Figure 2 As shown in Figure 2 , the power amplifier utilizes a sinusoidal pulse width modulation digital power amplifier. It amplifies the low-voltage signal input from the controller through digital circuitry and restores it to its original signal. This signal is then output to the dynamic coil circuit of the vibration table 11, driving the vibration table surface. Its main components include a pre-controller, a power amplifier module, a protection circuit, a power supply, and an electrical cabinet. The system utilizes a high-voltage, low-current output format, reducing power loss during transmission and achieving effective and reasonable impedance matching. The power amplifier utilizes conventional designs known in the art. The cooling unit utilizes a dual-circuit cooling system, whereby the cooling unit is connected to the dynamic coil, excitation coil, and short-circuit ring for water cooling. First, internally circulating water flows through the dynamic coil, excitation coil, and short-circuit ring cooling water pipelines, removing heat generated during operation of the vibration table 11. Heat is then exchanged through the heat exchanger within the cooling unit, with externally circulating water removing heat generated in the heat exchanger, thereby cooling the internally circulating water. The cooling water is recycled distilled water. The cooling unit can utilize conventional designs in the art to achieve effective cooling. Thermal insulation pads are installed on the end surfaces of the vibration table for thermal insulation. The controller can be a conventional 8-channel vibration controller in the field, and only needs to meet the functions of the vibration control software modules such as sine, random, classical impact, resonance search and dwell, sine plus random, and random plus random.

[0042] The internal heat source simulation subsystem is fixedly installed on the end face of the vibration table body 11 and is used to simulate the high-temperature thermal radiation environmental factors under the equipment working conditions, including a vibration coupler 21, an infrared heating assembly 22, a heat insulation layer 23, a lamp holder assembly 24, and a water-cooled platform 25; the vibration coupler 21 includes two fixed brackets 211 and a support pipe body 212. Both fixed brackets 211 are arched structures and a through hole is provided in the middle of each of them. The two ends of the support pipe body 212 respectively penetrate the through holes corresponding to the two fixed brackets 211 on both sides, and the outer wall of the support pipe body 212 is in close fit with the inner wall of the through hole. The outer wall of the support pipe body 212 between the two fixed brackets 211 is used to install the workpiece to be tested 26; the infrared heating assembly 22 includes a quartz lamp tube 221, a lamp tube fixture 222, a high-infrared short-wave quartz radiator 223, and a power supply wire 224. There are multiple quartz lamp tubes 221, which are evenly arranged around the central axis of the support pipe body 212 inside the support pipe body 212, and the quartz lamp tubes 221 do not interfere with the inner wall of the support pipe body 212. The quartz lamp tube 221 adopts a double-hole tube structure, and its cross-section is in an "∞" shape structure (as Figure 7 shown); and there are no less than 5 quartz lamp tubes 221 ( Figure 7 6 are shown in the figure), and they are evenly distributed around the central axis of the support pipe body 212; through the structure and position arrangement of the quartz lamp tubes 221, it is ensured that the radiation area can completely cover the pipe wall of the support pipe body 212, so as to ensure the heating uniformity and avoid the problem of local temperature difference; at the same time, the "∞" shape structure of the double-hole tube has stronger anti-interference ability, more uniform radiation range, and better mechanical properties. The two ends of the quartz lamp tube 221 respectively penetrate the two ends of the support pipe body 212 and are respectively connected to a lamp tube fixture 222 (as Figure 5 shown), the lamp tube fixture 222 includes a sealing frame 2221 and a clamping member 2222. The two ends of the quartz lamp tube 221 respectively penetrate the bottom surface of the corresponding sealing frame 2221, and a plurality of clamping members 2222 are arranged on the side surface of the sealing frame 2221 corresponding to the quartz lamp tube 221 (as Figure 7 shown, if the number of quartz lamp tubes 221 is 6, then the number of clamping members 2222 is also 6); the clamping member 2222 includes a spring clamp 22221, an adjusting member 22222, a bolt 22223, a nut 22224, and a ceramic spacer 22225. The clamping part of the spring clamp 22221 is arranged corresponding to the quartz lamp tube 221 (as Figure 7 shown) and is used to stably clamp the quartz lamp tube 221. The adjusting member 22222 is arranged on the adjusting part of the spring clamp 22221 (as Figure 7As shown, the adjusting part of the spring clamp 22221 is similar to a "door" shape structure, which is used to adjust the clamping part according to the size of the quartz lamp tube 221. One end of the bolt 22223 is fixedly connected to the spring clamp 22221 (i.e., the end of the spring clamp 22221 far from the clamping part), and the other end penetrates through the side wall of the sealing frame 2221, and a ceramic spacer 22225 and a nut 22224 are arranged on the outer wall of the sealing frame 2221 in sequence from near to far from the spring clamp 22221 (such as Figure 7 shown). The spring clamp 22221 is fixed in the sealing frame 2221 through the bolt 22223, the nut 22224 and the ceramic spacer 22225. A high-infrared short-wave quartz radiator 223 is arranged in the middle of the quartz lamp tube 221 and corresponding to the workpiece 26 to be tested. A power supply wire 224 is arranged at one end of the quartz lamp tube 221 and on the side of the lamp tube clamp 222 (i.e., the sealing frame 2221) far from the vibration connector 21, which is used to energize the high-infrared short-wave quartz radiator 223 (such as Figure 5 shown. By arranging the power supply wire 224 on one side of the sealing frame 2221 and cooperating with the setting of the quartz lamp tube 221, the influence of high temperature on the wiring during the heating process is effectively avoided, and problems such as wire damage or serious aging are caused); a temperature sensor is arranged in the quartz lamp tube 221 and the temperature sensor is located on the central axis of the support tube body 212 (the specific length and placement position of the temperature sensor are determined according to the actual situation, and those skilled in the art can understand that the specific implementation manner of this application will not be elaborated too much), which is used to monitor the temperature of the high-infrared short-wave quartz radiator 223. The heat insulation layer 23 includes a connector heat insulation layer 231 and a flexible heat insulation layer 232. The connector heat insulation layer 231 is uniformly coated on the outside of the fixed platform 211 to reduce the influence of the heat of the non-installed workpiece 26 area of the vibration connector 21 on the entire working chamber environment, and at the same time, it also ensures the rapid heating of the heating area, avoids heat dissipation, and ensures the heating effectiveness. The flexible heat insulation layer 232 is coated between the lamp tube clamp 222 (i.e., the sealing frame 2221) and the fixed platform 211, and the flexible heat insulation layer 232 is flexibly connected to the lamp tube clamp 222 (i.e., the sealing frame 2221) and the fixed platform 211 respectively (such as Figure 5as shown); both the connector thermal insulation layer 231 and the flexible heat insulation layer 232 are made of fiber reflective materials; the fiber reflective materials are formed by alternately stacking and laying an insulation layer and a reflective layer and are covered with a fiber cloth. The insulation layer is made of one or more of aluminum silicate fiber, magnesium silicate fiber, aerogel felt, and ceramic fiber felt; the reflective layer is made of one or more of molybdenum foil, nickel foil, stainless steel foil, aluminum foil, and double-sided aluminized polyimide film; the connector thermal insulation layer 231 is wrapped around the outer wall of the fixed bench 211 by spot welding; the flexible heat insulation layer 232 is flexibly connected to the fixed bench 211 and the lamp tube fixture 222 (i.e., the sealing frame 2221) respectively, so as to ensure that when the vibration connector 21 vibrates and moves up and down and left and right, the infrared heating assembly 22 will not vibrate; at the same time, the flexible heat insulation layer 232 blocks the heat generated by the infrared heating assembly 22 inside the support tube body 212 and prevents the heat inside the support tube body from overflowing, thereby realizing the coupling of the vibration mechanical environment and the thermal environment factors. The lamp holder assembly 24 includes a support frame 241 and a support truss 242. The two ends of the support frame 241 are respectively fixedly connected to the lamp tube fixture 222 (i.e., the sealing frame 2221), and the upper end of the support frame 241 is fixedly connected to the support truss 242, which is used to keep the infrared heating assembly 22 stationary during the vibration of the vibration connector 21 and avoid the mutual influence between vibration and heating; the upper end surface of the water-cooled platform 25 is fixedly connected to the fixed bench 211, and the lower end surface is fixedly connected to the vibration table. A plurality of cooling pipes 251 are evenly distributed inside the water-cooled platform 25. The water-cooled platform 25 is fixedly connected to the fixed bench 211 and the vibration table respectively by providing a first threaded hole 252 and a second threaded hole 253; the first threaded hole 252 is a blind hole from top to bottom, and the second threaded hole 253 is a through hole. One reason for setting the blind hole is to facilitate the arrangement of the cooling pipes 251 and avoid interference between the threaded holes and the cooling pipes 251. The other reason is to prevent the heat on the fixed bench 211 from directly passing through the threaded holes to the outside, effectively ensuring that the heat on the fixed bench 211 is blocked by the water-cooled platform 25, thereby exchanging heat with the cooling pipes 251 to achieve temperature reduction. Plug connectors 2510 are respectively arranged at both ends of the cooling pipe 251, and the plug connectors 2510 are connected to an external hose. The end of the hose far from the plug connector 2510 is communicated with an external circulating cooling water unit.

[0043] To ensure that the heat of the infrared heating assembly 22 inside the support tube body 212 can be better transferred to the outside of the support tube body 212, the wall thickness of the support tube body 212 is 4 mm. The length of the high-infrared short-wave quartz radiator (i.e., the effective heating length) 223 is 180 - 260 mm (preferably 220 mm). The thickness of the water-cooled platform 25 is 18 - 22 mm (preferably 20 mm).

[0044] Working principle:

[0045] In use, the workpiece 26 to be tested is arranged on the outer wall of the support tube body 212 between the two fixed brackets 211 (the inner wall of the workpiece 26 to be tested is in close contact with the outer wall of the support tube body 212). The vibration table body 11 is started to drive the water-cooled platform 25 and the fixed brackets 211 fixedly connected to the upper end surface thereof to vibrate together, thereby driving the workpiece 26 to be tested to vibrate for simulating the vibration working condition. The high-infrared short-wave quartz radiator 223 is started. The wavelength of the high-infrared short-wave quartz radiator 223 ranges from 0.75 to 1.4 μm. The filament is made of tungsten wire, and the lamp tube is sealed and evacuated, and filled with a special protective gas inside. The unique wavelength characteristics of the short wave make the heating penetration stronger and the reaction time faster. The temperature of the filament can reach 1800 to 2400 °C. At the same time, the quartz outer tube can continuously and stably work in an environment above 1000 °C and has good chemical corrosion resistance. The high-infrared short-wave quartz radiator 223 radiates outward to uniformly radiate and heat the workpiece 26 to be tested installed on the support tube body 212. At the same time, since the vibration coupler 21 is flexibly connected to the infrared heating assembly 22, the overall vibration of the vibration coupler 21 and the workpiece 26 to be tested will not affect the infrared heating assembly 22 (the infrared heating assembly 22 is fixed in the environmental simulation test chamber through the lamp holder assembly 24). And the support tube body 212 is effectively enclosed through the flexible heat insulation layer 232, so as to avoid a large amount of heat from overflowing and realize the effective coupling of heat and vibration. During the heat-vibration coupling process, the fixed bracket 211 is cooled by introducing cooling water into the cooling tube 251 to prevent the fixed bracket 211 from overheating.

[0046] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmental simulation system coupling an internal heat source and vibration, characterized in that: It includes a vibration sub-system and an internal heat source simulation sub-system; the vibration sub-system includes a vibration table body (11), a horizontal slide (12), a power amplifier, a cooling unit, a heat insulation pad, and a controller; The internal heat source simulation sub-system is fixedly arranged on the end face of the vibration table body (11), and includes a vibration coupler (21), an infrared heating assembly (22), a heat insulation and thermal insulation layer (23), a lamp holder assembly (24), and a water-cooled platform (25); the vibration coupler (21) includes two fixed brackets (211) and a support pipe body (212), both of the two fixed brackets (211) are arched structures and a through hole is opened in the middle of each of them, both ends of the support pipe body (212) respectively penetrate through the corresponding through holes of the two fixed brackets (211) on both sides and the outer wall of the support pipe body (212) is in close fit with the inner wall of the through hole, and the outer wall of the support pipe body (212) between the two fixed brackets (211) is used for installing a workpiece to be tested (26); the infrared heating assembly (22) includes quartz lamp tubes (221), lamp tube clamps (222), high-infrared short-wave quartz radiators (223), and power supply wires (224), there are multiple quartz lamp tubes (221), which are uniformly arranged around the central axis of the support pipe body (212) inside the support pipe body (212) and the quartz lamp tubes (221) do not interfere with the inner wall of the support pipe body (212), both ends of the quartz lamp tubes (221) respectively penetrate through both ends of the support pipe body (212) and are respectively connected to a lamp tube clamp (222), a high-infrared short-wave quartz radiator (223) is arranged in the middle of the quartz lamp tubes (221) and corresponding to the workpiece to be tested (26), the wavelength of the high-infrared short-wave quartz radiator is between 0.75 and 1.4 μm, the filament is made of tungsten wire, the lamp tube is sealed and evacuated, the temperature of the filament reaches 1800 to 2400 °C, and at the same time the quartz outer tube can continuously and stably work in an environment above 1000 °C; a power supply wire (224) is arranged on one end of the quartz lamp tube (221) and on the side of the lamp tube clamp (222) away from the vibration coupler (21); the heat insulation and thermal insulation layer (23) includes a coupler thermal insulation layer (231) and a flexible heat insulation layer (232), the coupler thermal insulation layer (231) is uniformly coated on the outside of the fixed bracket (211), the flexible heat insulation layer (232) is coated between the lamp tube clamp (222) and the fixed bracket (211) and the flexible heat insulation layer (232) is flexibly connected to the lamp tube clamp (222) and the fixed bracket (211) respectively; the lamp holder assembly (24) includes a support frame (241) and a support truss (242), both ends of the support frame (241) are fixedly connected to the lamp tube clamp (222) respectively and the upper end of the support frame (241) is fixedly connected to the support truss (242); the upper end face of the water-cooled platform (25) is fixedly connected to the fixed bracket (211), the lower end face is fixedly connected to the vibration table, and a plurality of cooling pipes (251) are uniformly distributed inside the water-cooled platform (25).

2. The environmental simulation system coupling internal heat source and vibration according to claim 1, characterized in that: The vibration table body (11) includes a frame support (111), a magnetic circuit assembly (112), a moving part (113), a vibration isolation device (114), a support and guiding system, a shield, and a vibration table surface; The magnetic circuit assembly (112) is arranged at the lower part in the middle of the frame support (111); The moving part (113) includes a driving coil and a moving coil skeleton (1130). The moving coil skeleton (1130) is arranged on the upper side of the middle part of the magnetic circuit assembly (112), and the driving coil is wound around the moving coil skeleton (1130); The vibration isolation device (114) uses an air spring; The support and guiding system includes an upper guiding device (1151) and a lower guiding device (1152). The upper guiding device (1151) is arranged on the upper side of the magnetic circuit assembly (112) and is located outside the moving coil skeleton (1130), and includes rollers (11511) and a "U" - shaped spring (11512); the lower guiding device (1152) is a hydrostatic bearing and is located in the middle part of the magnetic circuit assembly (112) on the lower side of the moving coil skeleton (1130); The shield includes an upper shield (1161) and a lower shield (1162). The upper shield (1161) is arranged outside the moving coil skeleton (1130) and is located on the upper side of the magnetic circuit assembly (112), and the lower shield (1162) is arranged on the lower side of the magnetic circuit assembly (112); The vibration table surface is located on the upper side of the moving coil skeleton (1130).

3. An environmental simulation system coupling an internal heat source and vibration according to claim 2, characterized in that: The magnetic circuit assembly (112) includes a lower pole plate (1121), a magnetic cylinder ring (1122), an upper pole plate (1123), a central magnetic pole (1124), a first excitation coil (1125), and a second excitation coil (1126). The magnetic cylinder ring (1122) is located between the lower pole plate (1121) and the upper pole plate (1123). The central magnetic pole (1124) is located inside the magnetic cylinder ring (1122), and the central axes of the central magnetic pole (1124), the lower pole plate (1121), the upper pole plate (1123), and the magnetic cylinder ring (1122) are collinear; a middle inner part of the magnetic cylinder ring (1122) protrudes, and a first excitation coil (1125) is arranged on the lower side of the protruding part, and a second excitation coil (1126) is arranged on the upper part. The first excitation coil (1125) and the second excitation coil (1126) are laminated windings using a double - coil laminated winding structure.

4. A coupled internal heat source and vibration environmental simulation system according to claim 2 or 3, characterized in that: The horizontal sliding table (12) adopts a "T" - type hydrostatic moving system, and includes a wallboard assembly (121), a connector (122), a horizontal table surface (123), a "T" - type hydrostatic guide rail and an oil source (124), and a sliding table base (125).

5. The environmental simulation system coupling an internal heat source and vibration according to claim 4, wherein: The lamp tube fixture (222) includes a sealing frame (2221) and a clamping member (2222). Both ends of the quartz lamp tube (221) penetrate through the bottom surface of the corresponding sealing frame (2221), and a plurality of clamping members (2222) are arranged on the side surface of the sealing frame (2221) corresponding to the quartz lamp tube (221); the clamping member (2222) includes a spring clamp (22221), an adjusting member (22222), a bolt (22223), a nut (22224), and a ceramic cushion block (22225). The clamping part of the spring clamp (22221) is arranged corresponding to the quartz lamp tube (221), the adjusting member (22222) is arranged on the adjusting part of the spring clamp (22221), one end of the bolt (22223) is fixedly connected to the spring clamp (22221), and the other end penetrates through the side wall of the sealing frame (2221), and a ceramic cushion block (22225) and a nut (22224) are arranged on the outer wall of the sealing frame (2221) in sequence from near to far away from the spring clamp (22221).

6. The environmental simulation system coupling internal heat source and vibration according to claim 1, characterized in that: The water-cooling platform (25) is fixedly connected to the fixed bench (211) and the vibration table respectively by arranging a first threaded hole (252) and a second threaded hole (253); the first threaded hole (252) is a blind hole from top to bottom, and the second threaded hole (253) is a through hole.

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