A comprehensive environmental factor simulation system for power compartment

Abstract

The present invention provides a system for simulating comprehensive environmental factors in a power cabin, comprising a simulation test box body (100); the simulation test box body (100) comprises a vibration subsystem (10), an internal heat source 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 slide table (12), a power amplifier, a refrigeration unit (32), a heat insulation pad, and a controller; the internal heat source subsystem (20) is fixedly arranged on the end surface of the vibration table body (11), and comprises a vibration connector (21), an infrared heating component (22), a heat insulation layer (23), a lamp holder component (24), and a water cooling platform (25). The system can realistically simulate various comprehensive environmental factors of the operating conditions of the power cabin of the equipment, provide an effective test method for the evolution law and life evaluation of the equipment, improve the performance of the equipment, and extend the service life of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental simulation tests, and in particular to a comprehensive environmental factor simulation system for a power cabin. Background Art

[0002] The interaction of various natural and mechanical environmental factors can affect the function, performance, and lifespan of equipment, reducing or even eliminating its ability to carry out various combat missions and leading to various accidents. As the source of power and the heart of the equipment, the power compartment is extremely important. The complex natural and mechanical environmental factors within the power compartment have a significant impact on its components, directly affecting the performance and service life of the equipment.

[0003] Environmental testing is an important means of assessing, screening, and researching the environmental adaptability of equipment and its materials, exposing product environmental failure modes, and evaluating product storage and service life. It provides support and assurance for equipment demonstration, development, production, and use. However, for a long time, those involved in equipment development have insufficiently studied the impact of the natural and mechanical environments within the power compartment on the equipment, resulting in a lack of effective testing methods and equipment.

[0004] Existing testing methods focus on a single factor, and the environmental factors simulated by comprehensive environmental testing are incomplete, failing to fully simulate the operating conditions of the power compartment. Furthermore, the environmental factors simulated by existing comprehensive environmental testing equipment are inconsistent with actual operating conditions. For example, existing temperature-humidity-vibration testing equipment can only simulate temperatures up to 300°C, and the simulated ambient temperature is only atmospheric. It lacks simulation of the internal thermal environment of the high-temperature hot-end components of the power compartment. During operation, the internal thermal environment of the high-temperature hot-end components of the power compartment is very high (e.g., the exhaust system temperature exceeds 800°C). High temperatures can severely affect the performance and service life of power compartment components. However, the temperatures simulated by existing comprehensive environmental testing simulation equipment differ significantly from actual operating conditions, making it impossible to accurately and effectively evaluate the performance and materials of the power compartment. Furthermore, during operation, airflow occurs within the equipment, and the airflow velocity varies from device to device in different operating environments. The impact of airflow is directly related to changes in the cabin environment, and the coupling effect on various environmental factors varies. Existing environmental simulation equipment also lacks simulation of airflow environments. Summary of the Invention

[0005] In response to the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a comprehensive environmental factor simulation system for the power compartment, which can truly simulate the comprehensive environmental factors such as temperature, humidity, vibration, internal heat source, airflow, etc. under the operating conditions of the equipment power compartment, thereby providing an effective testing means for the equipment evolution law and life assessment, improving the environmental adaptability of the equipment, improving the performance of the equipment during actual use, and extending the service life of the equipment during actual use.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A comprehensive environmental factor simulation system for a power compartment includes a simulation test box body, characterized in that the simulation test box body includes a vibration subsystem, an internal heat source subsystem, a temperature and humidity environment simulation subsystem, and an airflow simulation subsystem;

[0008] The vibration subsystem is used to simulate the vibration environment factors under the working conditions of the equipment, and includes a vibration table body, a horizontal sliding table, a power amplifier, a refrigeration unit, a thermal insulation pad and a controller;

[0009] The internal heat source 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 working conditions of the equipment, including a vibration connector, an infrared heating component, a thermal insulation layer, a lamp holder component and a water-cooling platform; the vibration connector includes two fixed supports and a support tube body, the two fixed supports are arched structures and a through hole is provided in the middle thereof, the two ends of the support tube body respectively pass through the through holes corresponding to the fixed supports on both sides and the outer wall of the support tube body is tightly fitted with the inner wall of the through hole, and the outer wall of the support tube body is located between the two fixed supports for mounting the workpiece to be tested; the infrared heating component includes a quartz lamp tube, a lamp tube clamp, a high-infrared short-wave quartz radiator and a high-temperature wiring, the quartz lamp tube is multiple, which is evenly arranged on the inner side of the support tube body around the central axis of the support tube body and the quartz lamp tube and the inner wall of the support tube body do not interfere with each other, the two ends of the quartz lamp tube respectively pass through the two ends of the support tube body and are respectively connected to a lamp tube clamp, the quartz A high-infrared short-wave quartz radiator is arranged in the middle of the lamp tube and in the part corresponding to the workpiece to be tested, and a high-temperature connection is arranged at one end of the quartz lamp tube and on the side of the lamp tube fixture away from the vibration connector, which is used to energize the high-infrared short-wave quartz radiator; the thermal insulation layer includes a connector insulation layer and a flexible thermal insulation layer, and the connector insulation layer is evenly wrapped around the outside of the fixed support, and the flexible thermal insulation layer is wrapped between the lamp tube fixture and the fixed support, and the flexible thermal insulation layer is flexibly connected to the lamp tube fixture and the fixed support respectively; the lamp holder assembly includes a support frame and a support truss, and the two ends of the support frame are respectively fixedly connected to the lamp tube fixture and the upper end of the support frame is fixedly connected to the support truss, which is used to achieve the stationary state of the infrared heating assembly during the vibration of the vibration connector to avoid mutual influence between vibration and heating; the upper end surface of the water-cooling platform is fixedly connected to the fixed support, and the lower end surface is fixedly connected to the vibration table, and a plurality of cooling pipes are evenly distributed inside the water-cooling platform.

[0010] For further optimization, the simulation system also includes an integrated control system for controlling the operation, data control and data collection of the controller of the vibration subsystem, the internal heat source subsystem, the temperature and humidity environment simulation subsystem and the airflow simulation subsystem.

[0011] For further optimization, the temperature and humidity environment simulation subsystem includes an air conditioning unit, a refrigeration unit (the same refrigeration unit as the refrigeration unit of the vibration subsystem) and a humidity control unit; the air conditioning unit includes an air heating device, an air cooling device and an air circulation device; the refrigeration unit is a refrigeration compressor; the humidity control unit includes a humidification system and a dehumidification system; the air temperature and humidity in the simulation test chamber main body (mainly the test studio) are adjusted by the refrigeration compressor, the air heating device, the air circulation device and the humidity control unit, and then the treated air is circulated through the air circulation device (fan circulation can be used), forming repeated forced circulation and performing temperature and humidity balance adjustment to achieve the purpose of simulating real working conditions.

[0012] For further optimization, the airflow simulation subsystem includes a long-axis fan, fan blades, an adjustable air duct and a frequency converter. The long-axis fan is arranged on a side wall of the simulation test box body, and its output shaft is located inside the simulation test box body (mainly the test studio) and is fixedly connected to the fan blades located inside the adjustable air duct; the adjustable air duct is located inside the test studio; the frequency converter is arranged on the simulation test box body and is used to adjust the speed of the long-axis fan; the fan blades are driven to rotate by the long-axis fan to adjust the airflow velocity; at the same time, by adjusting the position and direction of the air duct, the airflow environment under the working conditions of the power cabin is simulated.

[0013] For further optimization, the vibration table body includes a frame support, a magnetic pole assembly, a drive assembly, a buffer device, a support and guide system, a shield and a vibration table surface;

[0014] The magnetic pole assembly is arranged at the lower part of the middle of the frame support;

[0015] The driving assembly includes a driving coil and a moving coil frame, wherein the moving coil frame 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 frame;

[0016] The buffer device adopts an air spring to isolate the vibration of the entire vibration table;

[0017] The support and guide system includes an upper guide device and a lower guide device. The upper guide device is arranged on the upper side of the magnetic pole assembly and located on the outer ring of the moving coil frame. It includes a roller and a "U"-shaped spring, which is used to ensure that the vibration table has a good waveform, low distortion, and low lateral vibration; the lower guide device is a static pressure bearing, which is located in the middle of the magnetic pole assembly on the lower side of the moving coil frame.

[0018] The protective cover includes an upper cover body and a lower cover body, the upper cover body is arranged on the outer ring of the moving coil frame and located on the upper side of the magnetic pole assembly, and the lower cover body is arranged on the lower side of the magnetic pole assembly;

[0019] The vibration table is located on the upper side of the dynamic coil frame.

[0020] For further optimization, the magnetic pole assembly includes a lower pole plate, a magnetic cylinder ring, an upper pole plate, a center 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 center magnetic pole is located inside the magnetic cylinder ring, and the central axis of the center 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 (that is, the side close to the center magnetic pole) is protruding, 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, and the laminated windings of the first excitation coil and the second excitation coil adopt a double-turn laminated winding structure; through the dual magnetic circuit structure, not only a more stable annular magnetic field is provided, and the leakage magnetic field strength of the table surface is effectively reduced, but also the disadvantage of uneven cooling of the inner and outer windings of the single-wire bobbin winding excitation coil is overcome, and the uniformity of cooling of the excitation coil winding is ensured, thereby further improving the cooling effect and avoiding high temperature of the vibration table.

[0021] Preferably, the air springs are arranged in 4 groups of 8 for vibration isolation.

[0022] For further optimization, the horizontal slide adopts a "T"-shaped static pressure movable system to support the vibration table body, including wall panel components, connectors, horizontal platform, "T"-shaped static pressure guide rails and oil source, and slide base.

[0023] For further optimization, the power amplifier adopts a digital power amplifier with sinusoidal pulse width modulation, which 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 dynamic circuit of the vibration table to drive the vibration table surface to move.

[0024] For further optimization, in order to ensure that the heat of the infrared heating component in the support tube body can be better transferred to the outside of the support tube body, the thickness of the support tube body wall is 4 mm.

[0025] As a further optimization, the quartz lamps adopt a double-hole tube structure with an "∞"-shaped cross-section. There are no fewer than five quartz lamps, evenly distributed around the central axis of the support tube. The structure and placement of the quartz lamps ensure that the radiation area completely covers the support tube wall, thereby ensuring uniform heating and avoiding localized temperature differences. Furthermore, the double-hole "∞"-shaped structure provides enhanced noise immunity, a more uniform radiation range, and superior mechanical properties.

[0026] For further optimization, the length of the high infrared short-wave quartz radiator (ie, the effective heating length) is 180 to 260 mm.

[0027] For further optimization, a temperature sensor is provided in the quartz lamp tube and is located on the central axis of the supporting tube body, so as to monitor the temperature of the high infrared short-wave quartz radiator.

[0028] For further optimization, the lamp tube clamp includes a sealing frame and a clamping component, the two ends of the quartz lamp tube respectively pass through the corresponding bottom surface of the sealing frame, and multiple clamping components are arranged on the side of the sealing frame corresponding to the quartz lamp tube; the clamping component includes a spring clamp, an adjusting part, 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 to stably clamp the quartz lamp tube. The adjusting part is arranged on the adjusting part of the spring clamp and is used to adjust the clamping part according to the size of the quartz lamp tube. One end of the bolt is fixedly connected to the spring clamp, and the other end passes through the side wall of the sealing frame, and ceramic pads and nuts are arranged on the outer wall of the sealing frame in sequence from close to the spring clamp to far away.

[0029] For further optimization, the connector insulation layer and the flexible thermal insulation layer are both made of fiber reflective material; the fiber reflective material is made of alternating stacking of insulation layer and reflective layer and coated with fiber cloth, and 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 aluminum-plated polyimide film; the connector insulation layer is wrapped around the outer wall of the fixed support by spot welding; the flexible thermal insulation layer is flexibly connected to the fixed support and the lamp tube clamp (i.e., the sealing frame) respectively, so as to ensure that when the vibrating connector is vibrated and displaced up and down, left and right, the infrared heating component will not vibrate; at the same time, the flexible thermal insulation layer blocks the heat generated by the infrared heating component inside the support tube body and prevents the heat in the support tube body from overflowing, thereby realizing the coupling of vibration dynamic environment and thermal environment factors.

[0030] For further optimization, the thickness of the water cooling platform is 18 to 22 mm.

[0031] For further optimization, the water-cooling platform is fixedly connected to the fixed support and the vibration table by setting a first threaded hole and a second threaded hole respectively; the first threaded hole is a blind hole from top to bottom, and the second threaded hole is a through hole. The blind holes are set to facilitate the arrangement of the cooling pipe and avoid interference between the threaded holes and the cooling pipe. Secondly, it prevents the heat on the fixed support from being directly transferred to the outside through the threaded holes, effectively ensuring that the heat on the fixed support is blocked by the water-cooling platform, thereby exchanging heat with the cooling pipe to achieve cooling.

[0032] For further optimization, connectors are provided at both ends of the cooling pipe, the connectors are connected to an external hose, and one end of the hose away from the connector is connected to an external circulating cooling water unit.

[0033] The present invention has the following technical effects:

[0034] The system in this application is used for climate and mechanical strengthening simulation testing of power cabin components (i.e., tubular structural components) in a multi-factor integrated environment. The system can simultaneously apply four environmental factors: temperature, humidity, vibration, and airflow, realistically simulating the internal environmental conditions (i.e., high-temperature internal heat radiation) and vibration coupling of power cabin components (i.e., tubular structural components) during actual use, thereby accurately evaluating the performance indicators and service life of power cabin components (i.e., tubular structural components). The vibration subsystem in this application is capable of performing sinusoidal, random, classical impact, resonance search and dwell, sinusoidal plus random, random plus random, and sinusoidal plus random tests, with a variety of vibration types and a wide range of vibration frequencies. At the same time, the internal heat source subsystem in this application can prevent the infrared heating component from being disturbed by vibration while the vibration subsystem is vibrating, effectively ensuring the coupling effect of the internal heat source and vibration, and achieving realistic simulation of high-temperature internal environment and vibration conditions. The simulation system of the present application can meet the requirements of composite environmental simulation working conditions with a temperature of about 1200°C and a wide-band vibration of 1 to 2200 Hz. It can achieve uniform radiation heating of all parts of the power cabin components (i.e., tubular structural components), avoiding uneven heating that causes large errors in the test results or incompleteness of the simulation test results; at the same time, it can effectively avoid heat overflow, thereby ensuring that the specified temperature is reached quickly, saving energy, ensuring the heating effect, and avoiding heat overflow that affects the external environment and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the overall structure of the comprehensive environmental factor simulation system in an embodiment of the present invention.

[0036] Figure 2 Schematic diagram of the structure of the vibration table of the vibration subsystem in an embodiment of the present invention.

[0037] Figure 3 Schematic diagram of the structure of the horizontal slide table of the vibration subsystem in an embodiment of the present invention.

[0038] Figure 4 Schematic diagram of the overall structure of the internal heat source subsystem in an embodiment of the present invention.

[0039] Figure 5 This is a schematic diagram of the forward structure of the internal heat source subsystem in an embodiment of the present invention.

[0040] Figure 6 for Figure 5 AA cross-sectional view.

[0041] Figure 7 Schematic diagram of the structure of the vibration connector and infrared heating component of the internal heat source subsystem in an embodiment of the present invention.

[0042] Figure 8 for Figure 7 Schematic diagram of the B-direction structure.

[0043] Figure 9 Schematic diagram of the structure of the water cooling platform of the internal heat source subsystem in an embodiment of the present invention.

[0044] Among them, 100, simulation test box body; 10, vibration subsystem; 11, vibration table body; 111, frame support; 112, magnetic pole assembly; 1121, lower pole plate; 1122, magnetic cylinder ring; 1123, upper pole plate; 1124, center pole; 1125, first excitation coil; 1126, second excitation coil; 113, drive assembly; 1130, dynamic coil frame; 114, buffer device; 1151, upper guide device; 115 11. Roller; 11512. U-shaped spring; 1152. Lower guide; 1161. Upper cover; 1162. Lower cover; 12. Horizontal slide; 121. Wall panel assembly; 122. Connector; 123. Horizontal platform; 124. T-shaped hydrostatic guide rail and oil source; 125. Slide base; 20. Internal heat source subsystem; 21. Vibration connector; 211. Fixed support; 212. Support tube; 22. Infrared heating Components; 221, quartz lamp; 222, lamp fixture; 2221, sealing frame; 2222, clamping parts; 22221, spring clamp; 22222, adjusting parts; 22223, bolts; 22224, nuts; 22225, ceramic spacers; 223, high infrared short wave quartz radiator; 224, high temperature wiring; 23, thermal insulation layer; 231, connector insulation layer; 232, flexible insulation layer; 24, lamp holder assembly; 2 41. Support frame; 242. Support truss; 25. Water-cooling platform; 251. Cooling pipe; 2510. Connector; 252. First threaded hole; 253. Second threaded hole; 26. Workpiece to be tested; 30. Temperature and humidity environment simulation subsystem; 31. Air conditioning unit; 32. Refrigeration unit; 33. Humidity control unit; 40. Airflow simulation subsystem; 41. Long-axis fan; 42. Fan blades; 43. Adjustable air duct; 44. Frequency converter. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Example:

[0047] like Figures 1 to 9As shown, an environmental simulation system coupling an internal heat source and vibration includes a simulation test chamber body 100, characterized in that the simulation test chamber body 100 includes a vibration subsystem 10, an internal heat source subsystem 20, a temperature and humidity environment simulation subsystem 30, an airflow simulation subsystem 40, and an integrated control system. The integrated control system is used to control the operation, data control, and data acquisition of the controller of the vibration subsystem 10, the internal heat source subsystem 20, the temperature and humidity environment simulation subsystem 30, and the airflow simulation subsystem 40;

[0048] The vibration subsystem 10 is used to simulate the vibration environment factors under the working condition of the equipment, including a vibration table body 11, a horizontal slide table 12, a power amplifier, a refrigeration unit 32, a thermal insulation pad and a controller; the vibration table body 11 includes a frame support 111, a magnetic pole assembly 112, a drive assembly 113, a buffer device 114, a support guide system, a shield and a vibration table surface; the magnetic pole assembly 112 is arranged in the lower part of the middle of the frame support 111 (such as Figure 2 As shown); including 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 in 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 shown); Figure 2 As shown); the inner side of the middle of the magnetic cylinder ring 1122 (ie, the side close to the center magnetic pole 1124) is protruding and a first excitation coil 1125 is provided on the lower side of the protruding portion and a second excitation coil 1126 is provided on the upper side (as shown); Figure 2 As shown), the laminated windings of the first excitation coil 1125 and the second excitation coil 1126 adopt a double-turn laminated winding structure (that is, the laminated windings are first welded in series to form a series connection on the circuit, and then the water inlet and outlet of each laminated winding are respectively connected in parallel to form a parallel connection on the water path. Those skilled in the art will understand that the specific implementation methods of this application will not be discussed in detail). Through the dual magnetic circuit structure, it not only provides a more stable annular magnetic field and effectively reduces the leakage magnetic field strength of the table, but also overcomes the shortcomings of uneven cooling of the inner and outer windings of the single-wire bobbin winding excitation coil, ensures the uniformity of the cooling of the excitation coil winding, further improves the cooling effect, and avoids high temperature of the vibration table. The driving component 113 includes a driving coil and a moving coil frame 1130. The moving coil frame 1130 is arranged on the upper side of the middle of the magnetic pole component 112 (that is, the moving coil frame 1130 is located in the magnetic cylinder ring 1122 and on the upper side of the center magnetic pole 1124, as shown Figure 2 As shown), the driving coil is wound on the dynamic coil frame 1130; the buffer device 114 uses an air spring to isolate the vibration table body 11 as a whole (as shown Figure 2As shown), 4 groups of 8 air springs are used for vibration isolation (the specific arrangement position of the air spring adopts the conventional design in this field, which can achieve the vibration isolation frequency of the vibration table body 11 being controlled at about 3Hz in the vertical position and about 2Hz in the horizontal position); the support guide system includes an upper guide device 1151 and a lower guide device 1152, the upper guide device 1151 is arranged on the upper side of the magnetic pole assembly 112 (i.e., the upper pole plate 1123) and is located on the outer ring of the dynamic coil frame 1130, and includes a roller 11511 and a "U"-shaped spring 11512 (as shown). Figure 2 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 pole assembly 112 on the lower side of the dynamic coil frame 1130 (as shown in FIG. Figure 2 As shown); the shield includes an upper cover body 1161 and a lower cover body 1162, the upper cover body 1161 is arranged on the outer ring of the dynamic coil frame 1130 and is located on the upper side of the magnetic pole assembly 112 (i.e., the upper pole plate 1123), and the lower cover body 1162 is arranged on the lower side of the magnetic pole assembly 112 (i.e., the lower pole plate 1121) (as shown); Figure 2 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 3 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, minimizing power loss during transmission and achieving effective and reasonable impedance matching. The power amplifier utilizes conventional designs known in the art. The refrigeration unit 32 utilizes a dual-circuit cooling system, whereby water is supplied to the dynamic coil, excitation coil, and short-circuit ring for cooling. First, internally circulating water flows through the dynamic coil, excitation coil, and short-circuit ring cooling water lines, removing heat generated during operation of the vibration table 11. Heat is then exchanged through the heat exchanger within the refrigeration unit 32, 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 refrigeration unit 32 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.

[0049] The internal heat source subsystem 20 is fixedly arranged on the end surface of the vibration table 11 and is used to simulate the high-temperature heat radiation environment factors under the working conditions of the equipment. It includes a vibration connector 21, an infrared heating component 22, a heat insulation layer 23, a lamp holder component 24 and a water cooling platform 25; the vibration connector 21 includes two fixed supports 211 and a support tube 212. The two fixed supports 211 are both arched structures and have a through hole in the middle. The two ends of the support tube 212 pass through the corresponding through holes of the fixed supports 211 on both sides, and the outer wall of the support tube 212 is connected to the through hole. The inner wall fits tightly, and the outer wall of the support tube body 212 located between the two fixed supports 211 is used to install the workpiece 26 to be tested; 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 high-temperature wiring 224. There are multiple quartz lamp tubes 221, which are evenly arranged on the inner side of the support tube body 212 around the central axis of the support tube body 212 and the quartz lamp tubes 221 and the inner wall of the support tube body 212 do not interfere with each other. The quartz lamp tube 221 adopts a double-hole tube structure, and its cross section is an "∞"-shaped structure (such as Figure 8 As shown); and there are not less than 5 quartz lamp tubes 221 ( Figure 8 6 are shown), which are evenly distributed around the central axis of the support tube body 212; through the structure and position arrangement of the quartz lamp tube 221, it is ensured that the radiation area can fully cover the wall of the support tube body 212, thereby ensuring uniform heating and avoiding the problem of local temperature difference; at the same time, the "∞"-shaped structure of the double-hole tube is adopted, which has stronger anti-interference ability, more uniform radiation range, and better mechanical properties. The two ends of the quartz lamp tube 221 pass through the two ends of the support tube body 212 and are respectively connected to a lamp fixture 222 (as shown in FIG. Figure 6 As shown), the lamp fixture 222 includes a sealing frame 2221 and a clamping component 2222. The two ends of the quartz lamp 221 respectively penetrate the corresponding bottom surface of the sealing frame 2221, and the side of the sealing frame 2221 is provided with a plurality of clamping components 2222 (as shown in FIG. Figure 8 As shown, the number of quartz lamps 221 is 6, so the number of clamping parts 2222 is also 6); the clamping part 2222 includes a spring clamp 22221, an adjusting member 22222, a bolt 22223, a nut 22224 and a ceramic pad 22225, and the clamping part of the spring clamp 22221 is set corresponding to the quartz lamp 221 (as shown in FIG. Figure 8 As shown), used to stably clamp the quartz lamp 221, the adjustment member 22222 is set in the adjustment part of the spring clamp 22221 (as shown Figure 8As shown, the spring clamp 22221 adjustment portion is similar to a "door" shaped structure), which is used to adjust the clamping portion according to the size of the quartz lamp 221. One end of the bolt 22223 is fixedly connected to the spring clamp 22221 (that is, the end of the spring clamp 22221 away from the clamping portion), and the other end passes through the side wall of the sealing frame 2221. Ceramic pads 22225 and nuts 22224 (such as the outer wall of the sealing frame 2221 are sequentially arranged from close to the spring clamp 22221 to away from it) are arranged. Figure 8 As shown in FIG. 2 ), the spring clamp 22221 is fixed in the sealing frame 2221 by means of bolts 22223, nuts 22224 and ceramic spacers 22225. A high-infrared short-wave quartz radiator 223 is provided in the middle of the quartz lamp 221 and in the portion corresponding to the workpiece 26 to be tested. A high-temperature connection 224 is provided at one end of the quartz lamp 221 and on the side of the lamp clamp 222 (i.e., the sealing frame 2221) away from the vibration connector 21, for energizing the high-infrared short-wave quartz radiator 223 (as shown in FIG. 2 ). Figure 6 As shown, by arranging the high-temperature wiring 224 on one side of the sealing frame 2221 and cooperating with the arrangement of the quartz lamp tube 221, the influence of high temperature on the wiring during the heating process, which may cause line damage or severe aging problems, is effectively avoided; 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 actual conditions, which can be understood by those skilled in the art, and the specific implementation method of this application will not be discussed in detail), which is used to monitor the temperature of the high-infrared short-wave quartz radiator 223. The heat-insulating layer 23 includes a connector heat-insulating layer 231 and a flexible heat-insulating layer 232. The connector heat-insulating layer 231 is evenly coated on the outside of the fixed support 211 to reduce the impact of the heat of the vibration connector 21 in the non-installed area of ​​the workpiece to be tested 26 on the entire studio environment. At the same time, it also ensures the rapid heating of the heating area, avoids heat loss, and ensures the effectiveness of heating. The flexible heat-insulating layer 232 is coated between the lamp fixture 222 (i.e., the sealing frame 2221) and the fixed support 211, and the flexible heat-insulating layer 232 is flexibly connected to the lamp fixture 222 (i.e., the sealing frame 2221) and the fixed support 211 (e.g., Figure 6As shown); the connector insulation layer 231 and the flexible thermal insulation layer 232 are both made of fiber reflective material. The fiber reflective material is made of alternating insulation layers and reflective layers, and is covered with 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 aluminum-plated polyimide film. The connector insulation layer 231 is wrapped around the outer wall of the fixed support 211 by spot welding. The flexible thermal insulation layer 232 is flexibly connected to the fixed support 211 and the lamp fixture 222 (i.e., the sealing frame 2221), respectively, to ensure that when the vibrating connector 21 vibrates and moves up and down or left and right, the infrared heating component 22 does not vibrate. At the same time, the flexible thermal insulation layer 232 blocks the heat generated by the infrared heating component 22 within the support tube body 212, preventing the heat from overflowing from the support tube body, thereby achieving coupling of the vibration dynamic 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 clamp 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 ensure that the infrared heating assembly 22 remains stationary during the vibration of the vibration connector 21, thereby avoiding mutual influence between vibration and heating; the upper end surface of the water-cooling platform 25 is fixedly connected to the fixed support 211, and the lower end surface is fixedly connected to the vibration table, and a plurality of cooling pipes 251 are evenly distributed inside the water-cooling platform 25. The water-cooling platform 25 is fixedly connected to the fixed support 211 and the vibration table via a first threaded hole 252 and a second threaded hole 253, respectively. The first threaded hole 252 is a blind hole extending from top to bottom, while the second threaded hole 253 is a through hole. The blind holes facilitate the arrangement of the cooling pipe 251 and prevent interference between the threaded holes and the cooling pipe 251. Furthermore, they prevent heat from the fixed support 211 from being directly transferred to the outside world through the threaded holes. This effectively ensures that the heat from the fixed support 211 is blocked by the water-cooling platform 25, thereby allowing heat exchange with the cooling pipe 251 and achieving cooling. Connectors 2510 are provided at each end of the cooling pipe 251. These connectors 2510 are connected to an external hose. The end of the hose, away from the connector 2510, is connected to an external circulating cooling water unit.

[0050] To ensure that heat from the infrared heating assembly 22 within the support tube 212 is effectively transferred to the outside of the support tube 212, the support tube 212 wall is 4 mm thick. The length (i.e., effective heating length) of the high-infrared short-wave quartz radiator 223 is 180 to 260 mm (preferably 220 mm). The thickness of the water-cooling platform 25 is 18 to 22 mm (preferably 20 mm).

[0051] The temperature and humidity environment simulation subsystem 30 includes an air conditioning unit 31, a refrigeration unit 32 (the same refrigeration unit 32 as the refrigeration unit 32 of the vibration subsystem 10) and a humidity control unit 33; the air conditioning unit 31 includes an air heating device, an air cooling device and an air circulation device; the refrigeration unit 32 is a refrigeration compressor; the humidity control unit 33 includes a humidification system and a dehumidification system; the refrigeration compressor, the air heating device, the air circulation device and the humidity control unit 33 are used to adjust the air temperature and humidity in the simulation test chamber main body 100 (mainly the test studio), and then the treated air is circulated through the air circulation device (fan circulation can be used), forming repeated forced circulation and performing temperature and humidity balance adjustment to achieve the purpose of simulating real working conditions. Refrigeration unit 32 utilizes a reverse Carnot cycle, which consists of two isothermal and two adiabatic processes. The refrigerant is adiabatically compressed to a higher pressure by the compressor, consuming work and causing the exhaust temperature to rise. The refrigerant then exchanges heat with the surrounding medium in the condenser. It then adiabatically expands through the shutoff valve, performing work and lowering the refrigerant temperature. Finally, the refrigerant passes through the evaporator, absorbing heat from the surface of the object being cooled, thereby lowering the temperature of the object being cooled. This cycle continues, resulting in refrigeration. The humidification system utilizes electric steam humidification, while the dehumidification system utilizes condensation dehumidification.

[0052] The air flow simulation subsystem 40 includes a long-axis fan 41, a fan blade 42, an adjustable air duct 43, and a frequency converter 44 (such as Figure 1 As shown, a long-axis fan 41 is mounted on a side wall of the simulation test chamber body 100. Its output shaft is located within the simulation test chamber body 100 (primarily the test chamber) and is fixedly connected to a fan blade 42 within an adjustable air duct 43. The adjustable air duct 43 is located within the test chamber. A frequency converter 44 is mounted on the simulation test chamber body 100 and is used to adjust the speed of the long-axis fan 41. The long-axis fan 41 drives the fan blade 42 to rotate, adjusting the airflow velocity. Simultaneously, by adjusting the position and direction of the air duct, the airflow environment under the operating conditions of the power compartment is simulated. The outlet of the adjustable air duct 43 is 480 mm long and 100 mm wide. Its length is designed to be adjustable, and the outlet position can be raised or lowered according to the test conditions.

[0053] Working principle:

[0054] During use, the workpiece 26 to be tested is placed on the outer wall of the support tube 212 between the two fixed supports 211 (with the inner wall of the workpiece 26 in close contact with the outer wall of the support tube 212). The vibration table 11 is activated, causing the water-cooled platform 25 and the fixed supports 211 to which its upper end is fixedly connected to vibrate, thereby vibrating the workpiece 26 to simulate vibration conditions. The high-infrared short-wave quartz radiator 223 is activated. The wavelength of the high-infrared short-wave quartz radiator 223 is between 0.75 and 1.4 μm. The filament is a tungsten wire, the lamp tube is sealed and vacuumed, and the interior is filled with a special protective gas. The unique wavelength characteristics of the short-wave quartz radiator 223 provide greater heating penetration and faster reaction time. The filament temperature can reach 1800 to 2400°C. At the same time, the quartz outer tube can operate stably and continuously in environments above 1000°C and has excellent chemical corrosion resistance. The high-infrared short-wave quartz radiator 223 radiates outward, uniformly radiating heat to the workpiece 26 mounted on the support tube 212. Simultaneously, due to the flexible connection between the vibration connector 21 and the infrared heating assembly 22, the vibration of the vibration connector 21 and the workpiece 26 does not affect the infrared heating assembly 22 (which is secured to the environmental simulation test chamber via the lamp holder assembly 24). Furthermore, the flexible thermal insulation layer 232 effectively seals the support tube 212, preventing the escape of large amounts of heat and achieving effective heat-vibration coupling. During the heat-vibration coupling process, cooling water is introduced into the cooling pipe 251 to cool the fixed support 211 and prevent it from overheating.

[0055] In the vibration and internal heat high temperature coupled simulation environment, the temperature and humidity environment simulation subsystem 30 and the airflow simulation subsystem 40 are started simultaneously to simulate the external temperature, humidity and airflow environment respectively.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A comprehensive environmental factor simulation system for a power compartment, comprising a simulation test box body (100), characterized in that: The simulation test box body (100) includes a vibration subsystem (10), an internal heat source subsystem (20), a temperature and humidity environment simulation subsystem (30), and an airflow simulation subsystem (40); The vibration subsystem (10) includes a vibration table body (11), a horizontal slide table (12), a power amplifier, a refrigeration unit (32), a thermal insulation pad, and a controller; The internal heat source subsystem (20) is fixedly arranged on the end surface of the vibration table body (11), and includes a vibration connector (21), an infrared heating component (22), a heat insulation layer (23), a lamp holder component (24) and a water cooling platform (25); the vibration connector (21) includes two fixed supports (211) and a support tube (212), the two fixed supports (211) are both arched structures and have a through hole in the middle, the two ends of the support tube (212) respectively pass through the through holes corresponding to the fixed supports (211) on both sides, and the outer wall of the support tube (212) is tightly fitted with the inner wall of the through hole, and the support tube (212) is located on the two fixed supports (211). The outer wall between the support tube body and the outer wall is used to install the workpiece to be tested (26); the infrared heating component (22) includes a quartz lamp (221), a lamp fixture (222), a high infrared short wave quartz radiator (223) and a high temperature wiring (224), the quartz lamp (221) is multiple, and is evenly arranged on the inner side of the support tube body (212) around the central axis of the support tube body (212), and the quartz lamp (221) and the inner wall of the support tube body (212) do not interfere with each other, the two ends of the quartz lamp (221) respectively pass through the two ends of the support tube body (212) and are respectively connected to a lamp fixture (222), and the middle of the quartz lamp (221) and the portion corresponding to the workpiece to be tested (26) A high-infrared short-wave quartz radiator (223) is provided, the wavelength of the high-infrared short-wave quartz radiator is between 0.75 and 1.4 μm, the filament is made of tungsten filament, the lamp tube is sealed and vacuumed, the temperature of the filament reaches 1800 to 2400°C, and the quartz outer tube can continue to work stably in an environment above 1000°C; a high-temperature connection (224) is provided on one end of the quartz lamp tube (221) and located on the side of the lamp tube fixture (222) away from the vibration connector (21); the heat insulation layer (23) includes a connector insulation layer (231) and a flexible insulation layer (232), the connector insulation layer (231) is evenly covered on the outside of the fixed support (211), and the The flexible heat-insulating layer (232) is wrapped between the lamp tube fixture (222) and the fixed support (211), and the flexible heat-insulating layer (232) is flexibly connected to the lamp tube fixture (222) and the fixed support (211), respectively; the lamp frame assembly (24) comprises a support frame (241) and a support truss (242), both ends of the support frame (241) are fixedly connected to the lamp tube fixture (222), and the upper end of the support frame (241) is fixedly connected to the support truss (242); the upper end surface of the water-cooling platform (25) is fixedly connected to the fixed support (211), and the lower end surface is fixedly connected to the vibration table, and a plurality of cooling pipes (251) are evenly distributed inside the water-cooling platform (25).

2. The comprehensive environmental factor simulation system for a power compartment according to claim 1, characterized in that: The simulation system also includes an integrated control system.

3. A comprehensive environmental factor simulation system for a power compartment according to claim 1 or 2, characterized in that: The temperature and humidity environment simulation subsystem (30) includes an air conditioning unit (31), a refrigeration unit (32) and a humidity conditioning unit (33); the air conditioning unit (31) includes an air heating device, an air cooling device and an air circulation device; the refrigeration unit (32) is a refrigeration compressor; and the humidity conditioning unit (33) includes a humidification system and a dehumidification system.

4. The comprehensive environmental factor simulation system for a power compartment according to claim 3, characterized in that: 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), wherein the long-axis fan (41) is arranged on a side wall of the simulation test box body (100), and its output shaft is located in the simulation test box body (100) and fixedly connected to the fan blade (42) located inside the adjustable air duct (43); the adjustable air duct (43) is located inside the test studio; and the frequency converter (44) is arranged on the simulation test box body (100).

5. The comprehensive environmental factor simulation system for a power compartment according to claim 4, characterized in that: The vibration table body (11) includes a frame support (111), a magnetic pole assembly (112), a drive assembly (113), a buffer device (114), a support guide system, a shield, and a vibration table surface; The magnetic pole assembly (112) is arranged at the lower part of the middle of the frame support (111); The driving assembly (113) comprises a driving coil and a moving coil frame (1130), the moving coil frame (1130) is arranged on the upper side of the middle portion of the magnetic pole assembly (112), and the driving coil is wound around the moving coil frame (1130); The buffer device (114) adopts an air spring; The support and guide system comprises an upper guide device (1151) and a lower guide device (1152), wherein the upper guide device (1151) is arranged on the upper side of the magnetic pole assembly (112) and located on the outer ring of the moving coil frame (1130), and comprises a roller (11511) and a "U"-shaped spring (11512); the lower guide device (1152) is a static pressure bearing and is located in the middle of the magnetic pole assembly (112) on the lower side of the moving coil frame (1130); The protective cover comprises an upper cover body (1161) and a lower cover body (1162), wherein the upper cover body (1161) is arranged on the outer ring of the moving coil frame (1130) and is located on the upper side of the magnetic pole assembly (112), and the lower cover body (1162) is arranged on the lower side of the magnetic pole assembly (112); The vibration table is located on the upper side of the dynamic coil frame (1130).

6. The comprehensive environmental factor simulation system for a power compartment according to claim 5, characterized in that: The magnetic pole 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), wherein the magnetic cylinder ring (1122) is located between the lower pole plate (1121) and the upper pole plate (1123), and the central magnetic pole (1124) is located inside the magnetic cylinder ring (1122). The central axis (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 inner side of the central portion of the magnetic cylinder ring (1122) is protruding, and a first excitation coil (1125) is provided on the lower side of the protruding portion, and a second excitation coil (1126) is provided on the upper side; the laminated windings of the first excitation coil (1125) and the second excitation coil (1126) adopt a double-turn laminated winding structure.

7. The comprehensive environmental factor simulation system for a power compartment according to claim 1, characterized in that: The lamp tube fixture (222) comprises a sealing frame (2221) and a clamping component (2222); both ends of the quartz lamp tube (221) respectively penetrate the bottom surface of the corresponding sealing frame (2221), and a plurality of clamping components (2222) are provided on the side of the sealing frame (2221) corresponding to the quartz lamp tube (221); the clamping component (2222) comprises a spring clamp (22221), an adjusting member (22222), a bolt (22223), a nut (22224) and a ceramic spacer ( 22225), the clamping portion of the spring clamp (22221) is arranged corresponding to the quartz lamp tube (221), the adjusting member (22222) is arranged on the adjusting portion of the spring clamp (22221), one end of the bolt (22223) is fixedly connected to the spring clamp (22221), and the other end passes through the side wall of the sealing frame (2221), and ceramic pads (22225) and nuts (22224) are arranged on the outer wall of the sealing frame (2221) in sequence from close to the spring clamp (22221) to far away.

8. The comprehensive environmental factor simulation system for a power compartment according to claim 1, characterized in that: The water-cooling platform (25) is fixedly connected to the fixed support (211) and the vibration table by respectively 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.

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