Aerospace part airtightness detection device based on AI technology

Abstract

The invention discloses an AI technology-based air tightness detection device for aerospace parts, which is applied to the technical field of air tightness detection devices for aerospace parts, and comprises a detection box used for setting and executing a test process; the pressure tank is arranged in the detection box and is used for providing a detection space; the engine pipeline is arranged in the pressure tank; the clamping assembly and the detection assembly are arranged in the pressure tank, the clamping assembly is used for supporting and fixing engine pipelines of multiple models and sizes in a matched mode, and the detection assembly is used for detecting the temperature and pressure in the pressure tank and the pressure in the engine pipelines; the temperature adjusting assembly is arranged on the left side of the clamping assembly; an intelligent detection system is further arranged in the detection box and comprises an acquisition module, a control module, a judgment module, a counting module, a data output module and an alarm module; the pressure tank comprises a tank body, a tank door and a connecting rotating shaft; according to the invention, the accuracy of air tightness detection of aerospace parts can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air tightness detection devices for aerospace parts, and in particular to an air tightness detection device for aerospace parts based on AI technology. Background Art

[0002] Air tightness testing requires an air tightness tester, which is a device specially used for airtightness testing of cavity mechanical products. It is mainly used in the production of automobile engines, gearboxes, axles, water tanks, oil tanks, pipelines, etc. that have sealing requirements for the cavity. The air tightness tester adopts an intelligent design of embedded control, and can use AI technology to automatically complete the test program and automatically judge the test results. With the development of aerospace technology, the air tightness requirements for aerospace parts are getting higher and higher, and the detection of aerospace air tightness is becoming more and more rigorous.

[0003] The various pipes on the engines of aerospace equipment are the most basic component units for transporting media to liquid engines, so the safety of engine pipes must be guaranteed. In order to prevent leakage accidents in pipelines during thermal tests or rocket launches, it is usually necessary to conduct airtightness tests on the pipelines in advance to find possible leaks. The existing detection method is to apply soap foam to each interface and main weld to observe whether there are bubbles. This detection method has a large workload, a long detection cycle, and it is difficult to detect tiny leaks. Alternatively, ultrasonic measurement methods are used, but ultrasonic measurement methods are easily affected by ambient noise and are also difficult to detect smaller gas leaks. At the same time, due to the particularity of the use environment of engine pipelines, which are usually under low-temperature vacuum conditions, traditional airtightness detection methods are even more difficult to meet the actual pipeline detection requirements.

[0004] Therefore, it is necessary to provide an airtightness detection device for aerospace parts based on AI technology to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an aerospace parts airtightness detection device based on AI technology, which can improve the accuracy of aerospace parts airtightness detection to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an aerospace component airtightness detection device based on AI technology, comprising a detection box, the detection box is used to set up and execute a test process; A pressure tank is arranged inside the test box, and is used to provide a test space; an engine pipe disposed inside the pressure tank; The clamping assembly and the detection assembly are arranged inside the pressure tank. The clamping assembly is used to cooperate with engine pipes of various models and sizes to achieve support and fixation. The detection assembly is used to detect the temperature and pressure inside the pressure tank and the pressure inside the engine pipe; A temperature regulating component is arranged on the left side of the clamping component, and the temperature regulating component is used to adjust the internal temperature of the pressure tank to simulate the real use environment; An intelligent detection system is also provided inside the detection box. The intelligent detection system is used to input preset programs, and then execute engine pipeline air tightness detection under various conditions according to instructions, collect relevant data in real time and feedback, and make air tightness judgment. The intelligent detection system includes an acquisition module, a control module, a judgment module, a counting module, a data output module and an alarm module; The pressure tank comprises a tank body, a tank door and a connecting shaft; The clamping assembly includes two sets of slide rails, a bottom plate, a driving part 1, a driving part 2, a driving part 3, and several sets of pressure measuring tubes and pressure relief tubes; The detection component includes a temperature sensor, a pressure sensor 1 and a pneumatic vibrator, an air pump and a pressure relief valve. The temperature sensor and the pressure sensor 1 are fixed to the side of the tank door, the pneumatic vibrator is fixed to the bottom of the bottom plate, the pressure tank is connected to a pipeline 1, the pipeline 1 is connected to a vacuum machine, the pipeline 1 is provided with a solenoid valve 1, the pressure measuring tube is connected to a pipeline 2, the pipeline 2 is connected to an air pump, the pipeline 2 is provided with a solenoid valve 2 and a pressure sensor 2, the pressure relief pipe is connected to a pipeline 3, and the pipeline is provided with a pressure relief valve; The present application can conduct air tightness testing under normal temperature, pressure and vacuum conditions. The testing environment is more in line with actual usage, can ensure the accuracy of the test results, and the testing state is more flexible, which is conducive to subsequent targeted improvements and improving the air tightness of the engine pipeline under different conditions.

[0007] According to the above technical scheme, a support plate is fixedly connected to the slide rail, the cross-section of the support plate is concave, a connecting plate is fixedly connected to the side of the support plate, a handle is fixedly connected to the connecting plate, a plurality of springs are fixedly connected to the top of the support plate, the top of the spring is fixedly connected to the bottom plate, two groups of horizontal slide grooves are arranged on the bottom plate, the right horizontal slide groove is fixed to the right side of the bottom plate, the left horizontal slide groove is slidably connected to the bottom plate, a vertical slide groove is slidably connected in the horizontal slide groove, a driving unit 1 is arranged in the vertical slide groove, a connecting block is slidably connected in the vertical slide groove, a driving unit 2 is arranged in the vertical slide groove, and a driving unit 3 is arranged on the side of the left horizontal slide groove, which can be adjusted front and back, left and right, up and down, so as to facilitate the fixing of parts of different sizes.

[0008] According to the above technical solution, the side of the connecting block is rotatably connected to the limiting seat, a non-slip pad is provided at the bottom of the limiting seat, and the pressure measuring tube and the pressure relief tube are arranged on the limiting seat, which can be suitable for fixing parts of different sizes.

[0009] According to the above technical solution, the temperature adjustment component includes a frame, a heating wire and a refrigeration mechanism. The frame is fixed to the right side inside the tank body, two sets of fans are fixedly connected to the frame, the heating wire is arranged on the side of the frame, the heating wire passes through the tank body and is fixedly connected to the tank body, a refrigerant inlet is arranged on the tank body, the refrigerant inlet is connected to a pipeline four, a solenoid valve three is arranged on the pipeline four, and the refrigeration mechanism is connected to the refrigerant inlet, so as to form low-temperature and high-temperature states to simulate the extreme high and low temperature conditions during actual use.

[0010] According to the above technical solution, the acquisition module is electrically connected to the temperature sensor, pressure sensor 1, and pressure sensor 2. The acquisition module is used to collect the temperature and pressure inside the pressure tank and the pressure inside the engine pipeline. The control module is electrically connected to the pneumatic vibrator, vacuum machine, air pump, solenoid valve 1, solenoid valve 2, solenoid valve 3 and pressure relief valve for controlling opening and closing. The judgment module is provided with a leakage pressure limit ∆F. The judgment module is used to judge the air tightness of the engine pipeline under different conditions. The counting module is provided with a counting warning value. The counting module is used for counting. The data output module is electrically connected to the display screen. The data output module is used to display the detection status and inspection results. The alarm module is used for alarm prompts.

[0011] According to the above technical solution, the detection box includes a box body and a box door, the box door is hinged to the box body, and a display screen and several buttons are provided on the box body for setting, executing and displaying the test process.

[0012] According to the above technical solution, the connecting shaft is hinged to the left side of the tank body, the connecting shaft is connected to the tank door bearing, the bearing on the connecting shaft is connected to a handwheel, the handwheel and the tank door are connected through a gear transmission, and limiting blocks and limiting notches are provided on the opposite sides of the tank body and the tank door. A locking handle is fixedly connected to the right side of the tank body, which can close the pressure tank, facilitate the formation of an extreme state, and improve the accuracy of detection.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a detection component and a temperature adjustment component, can perform air tightness detection under various extreme conditions on the basis of completing air tightness detection under normal temperature and pressure conditions, which is more in line with the actual use environment and is conducive to improving the accuracy of detection. At the same time, after obtaining various air tightness detection results, the dominant reason for the obvious reduction in air tightness can be obtained based on the air tightness results, thereby facilitating targeted improvements to improve the air tightness of the engine pipeline in this state. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention in a closed state; Figure 2 It is a schematic diagram of the overall structure of the present invention in an open state; Figure 3 It is a schematic diagram of the structure of the pressure tank of the present invention from a top view; Figure 4 is a front cross-sectional schematic diagram of the internal structure of the pressure tank of the present invention; Figure 5 The present invention Figure 4 A schematic diagram of the enlarged structure of the middle A area; Figure 6 is a schematic diagram of a clamping assembly of the present invention; Figure 7 is a right side cross-sectional schematic diagram of a partial structure of a clamping assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the temperature adjustment component of the present invention; Fig. 9 It is a schematic diagram of the detection pipeline of the present invention; In the figure: 1, test box; 11, box body; 12, box door; 21. Tank body; 22. Tank door; 23. Connecting shaft; 24. Hand wheel; 25. Locking handle; 31. Slide rail; 32. Support plate; 33. Connecting plate; 34. Spring; 35. Bottom plate; 36. Horizontal slide groove; 37. Vertical slide groove; 38. Driving unit 1; 39. Connecting block; 310. Driving unit 2; 311. Limiting seat; 312. Pressure measuring tube; 313. Driving unit 3; 41. Temperature sensor; 42. Pressure sensor 1; 43. Pneumatic vibrator; 44. Vacuum machine; 45. Pressure sensor 2; 46. Air pump; 47. Pressure relief valve; 51. frame; 52. fan; 53. heating wire; 54. refrigerant inlet; 55. refrigeration mechanism; 6. Engine pipes. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-9The present invention provides a technical solution: an aerospace component airtightness detection device based on AI technology, comprising a detection box 1, a pressure tank arranged inside the detection box 1, a clamping assembly and a detection assembly arranged inside the pressure tank, a temperature adjustment assembly arranged on the left side of the clamping assembly and an engine pipeline 6 arranged inside the pressure tank, the detection box 1 is used to set and execute the test process, the pressure tank is used to provide a detection space, the clamping assembly is used to cooperate with engine pipelines 6 of various models and sizes to achieve support and fixing, the detection assembly is used to detect the temperature and pressure in the pressure tank and the pressure in the engine pipeline 6, and the temperature adjustment assembly is used to adjust the internal temperature of the pressure tank to simulate the real use environment.

[0017] See also Figure 1 and Figure 2 The test box 1 includes a box body 11 and a box door 12. The box door 12 is hinged to the box body 11. A display screen and a plurality of buttons are provided on the box body 11 for setting, executing and displaying the test process. An intelligent detection system is also provided inside the test box 1. The intelligent detection system is used to input a preset program, and then execute a variety of air tightness detection methods for the engine pipeline 6 according to the instructions, collect relevant data in real time and feedback, and make air tightness judgment.

[0018] See also Figure 2 and Figure 3 The pressure tank includes a tank body 21, a tank door 22 and a connecting shaft 23. The connecting shaft 23 is hinged on the left side of the tank body 21. The connecting shaft 23 is connected to the tank door 22 bearing. A hand wheel 24 is connected to the connecting shaft 23 bearing. The hand wheel 24 is connected to the tank door 22 through a gear transmission. Limiting blocks and limiting notches are provided on the opposite sides of the tank body 21 and the tank door 22. A locking handle 25 is fixedly connected to the right side of the tank body 21.

[0019] During actual operation, the connecting shaft 23 is pulled to drive the tank door 22 to rotate around the hinge between the connecting shaft 23 and the tank body 21, and the hand wheel 24 is turned at the same time to drive the tank door 22 to rotate, so that the limit block on the tank door 22 corresponds to the upper limit notch of the tank body 21, and the tank door 22 is closed. Thereafter, the hand wheel 24 is continued to be turned to make the limit block on the tank door 22 correspond to the upper limit block of the tank body 21, thereby fixing the position of the tank door 22, and finally the locking handle 25 is turned so that the locking handle 25 limits and locks the tank door 22, thereby consolidating the locking effect.

[0020] See also Figure 4-Figure 7The clamping assembly includes two sets of slide rails 31, a bottom plate 35, a driving part 1 38, a driving part 2 310, a driving part 313, a pressure measuring tube 312 and a pressure relief tube. The slide rail 31 is a retractable slide rail. A support plate 32 is fixedly connected to the slide rail 31. The cross section of the support plate 32 is concave. A connecting plate 33 is fixedly connected to the side of the support plate 32. A handle is fixedly connected to the connecting plate 33. A plurality of springs 34 are fixedly connected to the top of the support plate 32. The top of the spring 34 is fixedly connected to the bottom plate 35. Two sets of horizontal slide grooves 36 are arranged on the bottom plate 35. The right horizontal slide groove 36 is fixed to the right side of the bottom plate 35. The left horizontal slide groove 36 is slidably connected to the bottom plate 35. A vertical slide groove 36 is slidably connected in the horizontal slide groove 36. The vertical slide groove 37 is provided with a driving unit 38, and the driving unit 1 38 is used to drive the vertical slide groove 37 to move left and right in the horizontal slide groove 36. The vertical slide groove 37 is slidably connected with a connecting block 39. The driving unit 2 310 is provided in the vertical slide groove 37, and the driving unit 2 310 is used to drive the connecting block 39 to slide up and down in the vertical slide groove 37. The driving unit 313 is provided on the side of the left horizontal slide groove 36. The driving unit 313 is used to drive the left horizontal slide groove 36 to slide back and forth on the top of the bottom plate 35. The side of the connecting block 39 is rotatably connected to the limiting seat 311. The bottom of the limiting seat 311 is provided with an anti-slip pad. The pressure measuring tube 312 and the pressure relief tube are provided on the limiting seat 311.

[0021] It should be noted that the drive unit 1 38 is preferably but not limited to a hand-cranked screw drive, the drive unit 2 310 is preferably but not limited to a hand-cranked worm gear drive combined with a screw drive, and the drive unit 3 313 is preferably but not limited to a hand-cranked gear drive combined with a rack and pinion drive, which will not be elaborated here.

[0022] In actual operation, the handle is pulled to pull the support plate 32 out of the tank body 21, and then the pressure measuring tube 312 and the pressure relief tube are connected to the two ends of the engine pipe 6 and placed on the bottom plate 35. First, the drive unit 1 38 is adjusted to move left and right to the left and right position of the corresponding engine pipe 6, and then the drive unit 313 is adjusted to move forward and backward to limit the front and rear position of the engine pipe 6. Finally, the drive unit 2 310 is adjusted to slide up and down to limit the engine pipe 6 between the limit seat 311 and the bottom plate 35. The rotatably connected limit seat 311 can be suitable for fixing the ends of engine pipes 6 with different shapes.

[0023] See also Figure 2 , Figure 4 , Figure 5 and Fig. 9The detection component includes a temperature sensor 41, a pressure sensor 42 and a pneumatic vibrator 43. The temperature sensor 41 and the pressure sensor 42 are fixed to the side of the tank door 22, and the pneumatic vibrator 43 is fixed to the bottom of the bottom plate 35. The pressure tank is connected to a pipeline 1, which is connected to a vacuum machine 44. A solenoid valve 1 is arranged on the pipeline 1. The pressure measuring tube 312 is connected to a pipeline 2, which is connected to an air pump 46. A solenoid valve 2 and a pressure sensor 45 are arranged on the pipeline 2. The pressure relief pipe is connected to a pipeline 3, and a pressure relief valve 47 is arranged on the pipeline 3.

[0024] In actual operation, the solenoid valve 2 is opened and the air pump 46 is started, so that a certain pressure is formed inside the engine pipeline 6. The pressure is then detected by the pressure sensor 2 45 to determine the air tightness. The solenoid valve 1 is opened and the vacuum machine 44 is started to evacuate the pressure tank. The air tightness test of the engine pipeline 6 can be performed under a vacuum state. Starting the pneumatic vibrator 43 can test the air tightness of the engine pipeline 6 when it is in a vibrating state.

[0025] See also Figure 3 , Figure 4 , Figure 8 and Fig. 9 The temperature regulating assembly includes a frame 51, a heating wire 53 and a refrigeration mechanism 55. The frame 51 is fixed to the right side inside the tank body 21. Two sets of fans 52 are fixedly connected to the frame 51. The heating wire 53 is arranged on the side of the frame 51. The heating wire 53 passes through the tank body 21 and is fixedly connected to the tank body 21. A refrigerant inlet 54 is arranged on the tank body 21. The refrigerant inlet 54 is connected to a pipeline four. A solenoid valve three is arranged on the pipeline four. The refrigeration mechanism 55 is connected to the refrigerant inlet 54. The refrigeration mechanism 55 is preferably a refrigerator.

[0026] In actual operation, the heating wire 53 is heated and the fan 52 is started, so that the heat generated by the heating wire 53 can be quickly transferred to the inside of the tank body 21, which is convenient for the air tightness test of the engine pipeline 6 at high temperature. If the solenoid valve three is opened and the refrigeration mechanism 55 is started, the refrigerant is input into the inside of the tank body 21, which is convenient for the air tightness test of the engine pipeline 6 at low temperature.

[0027] The intelligent detection system includes an acquisition module, a control module, a judgment module, a counting module, a data output module and an alarm module. The acquisition module is electrically connected to a temperature sensor 41, a pressure sensor 1 42 and a pressure sensor 2 45. The acquisition module is used to collect the temperature and pressure inside the pressure tank and the pressure inside the engine pipeline 6. The control module is electrically connected to a pneumatic vibrator 43, a vacuum machine 44, an air pump 46, a solenoid valve 1, a solenoid valve 2, a solenoid valve 3 and a pressure relief valve 47 for controlling opening and closing. A leakage pressure limit ∆F is set in the judgment module. The judgment module is used to judge the air tightness of the engine pipeline 6 under different conditions. A counting warning value is set in the counting module. The counting module is used for counting. The data output module is electrically connected to a display screen. The data output module is used to display the detection status and detection results. The alarm module is used for alarm prompts.

[0028] Detection method of airtight detection device: Step 1: Manually install the engine pipeline 6 to be tested on the clamping assembly, and seal the pressure measuring tube 312 and the pressure relief tube to the engine pipeline 6 .

[0029] Step 2: The tank door 22 remains open and an airtightness test is performed at normal temperature and pressure.

[0030] Specifically, the control module controls the solenoid valve 2 to open, the air pump 46 to start, and supply air to the engine pipeline 6. When the internal pressure of the engine pipeline 6 reaches the set pressure, the solenoid valve 2 is closed, the air pump 46 is stopped, and the pressure is maintained for the set time. The acquisition module collects the pressure value detected by the pressure sensor 2 45 after the pressure is maintained, and compares the actual pressure leakage value to be recorded as , the subsequent comparison module will be the actual pressure leakage value and pressure leakage limit F is compared, and the judgment module judges the air tightness of the engine pipeline 6.

[0031] exist > When F, the air tightness of the engine pipeline 6 is poor at normal temperature and pressure. It is necessary to eliminate the influence of the abnormal connection on the air tightness. The staff reconnects the pressure measuring tube 312 and the pressure relief tube to the two ends of the engine pipeline 6 and repeats this step at most twice. If the result remains unchanged, there is a serious leakage in the engine pipeline 6 and it cannot be put into use. Feedback is sent to the alarm module and the counting module. The counting module performs intermittent counting A and the alarm module issues an alarm prompt.

[0032] exist ≤ F, the engine pipeline 6 has good air tightness at normal temperature and pressure. =0, it is an ideal state, but the airtightness test result at normal temperature and pressure cannot meet the actual use requirements, and additional tests are needed to determine the airtightness of the engine pipe 6 in an extreme environment.

[0033] Step 3: Supplementary testing of the air tightness of the engine pipe 6 in an extreme environment.

[0034] The judgment module is also equipped with leakage pressure limit coefficients under different environments. The coefficient under vacuum environment is x, the coefficient under vibration environment is y, the coefficient under high temperature environment is n, and the coefficient under low temperature environment is m. Supplementary test 1: Airtightness test under vacuum state.

[0035] Specifically, the control module controls the electromagnetic valve to open, the vacuum machine 44 is started, and the pressure tank is evacuated. When the pressure inside the pressure tank reaches the set pressure, the air pump 46 is started to supply air to the engine pipeline 6 to the set pressure, and the pressure is maintained for the set time. The acquisition module collects the pressure value detected by the pressure sensor 2 45 after the pressure is maintained, and the actual pressure leakage value is obtained by comparison and recorded as Then the comparison module will compare the actual pressure leakage value Compared with the vacuum pressure leakage limit, the vacuum pressure leakage limit is , , the judgment module judges the air tightness of the engine pipeline 6.

[0036] exist > When , it indicates that the air tightness of the engine pipe 6 under vacuum state is poor, and the feedback is sent to the alarm module and the counting module. The counting module performs intermittent counting B, and the alarm module issues an alarm prompt.

[0037] exist ≤ When , it indicates that the air tightness of the engine pipe 6 is good under vacuum state. =0, it is an ideal state, and further supplementary testing can be performed to determine whether the air tightness of the engine duct 6 is more suitable for the actual use environment.

[0038] Supplementary test 2: Air tightness test under high temperature conditions.

[0039] Specifically, the control module heats the heating wire 53 and starts the fan 52 to quickly transfer the heat generated by the heating wire 53 to the inside of the tank 21. After the acquisition module detects that the temperature sensor 41 reaches the set value and maintains it for a certain period of time, the air pump 46 is started to supply air to the inside of the engine pipe 6 to the set pressure and maintains the pressure for the set time. The acquisition module collects the pressure value detected by the pressure sensor 2 45 after the pressure is maintained, and compares it to obtain the actual pressure leakage value recorded as Then the comparison module will compare the actual pressure leakage value Compared with the high temperature state pressure leakage limit, the high temperature state pressure leakage limit is , , the judgment module judges the air tightness of the engine pipeline 6.

[0040] exist > When , it indicates that the air tightness of the engine pipe 6 is poor under the high temperature state, and the feedback is sent to the alarm module and the counting module. The counting module performs intermittent counting C, and the alarm module issues an alarm prompt.

[0041] exist ≤ When , it indicates that the air tightness of the engine pipe 6 is good under high temperature state. =0, it is an ideal state, and further supplementary testing can be performed to determine whether the air tightness of the engine duct 6 is more suitable for the actual use environment.

[0042] Supplementary test three: air tightness test under low temperature conditions.

[0043] Specifically, the control module controls the solenoid valve 3 and starts the refrigeration mechanism 55 to input refrigerant into the tank 21. The acquisition module collects the temperature sensor 41 to reach the set value and maintains it for a certain period of time, then starts the air pump 46 to supply air to the engine pipeline 6 to the set pressure, and maintains the pressure for the set time. The acquisition module collects the pressure value detected by the pressure sensor 2 45 after the pressure is maintained, and compares it to obtain the actual pressure leakage value recorded as Then the comparison module will compare the actual pressure leakage value Compared with the low temperature state pressure leakage limit, the low temperature state pressure leakage limit is , , the judgment module judges the air tightness of the engine pipeline 6.

[0044] exist > When , it indicates that the air tightness of the engine pipeline 6 is poor under the low temperature state, and the feedback is sent to the alarm module and the counting module. The counting module performs intermittent counting D, and the alarm module issues an alarm prompt.

[0045] exist ≤ When , it indicates that the air tightness of the engine pipe 6 is good at low temperature. =0, it is an ideal state, and further supplementary testing can be performed to determine whether the air tightness of the engine duct 6 is more suitable for the actual use environment.

[0046] Supplementary test 4: Air tightness test under vibration state.

[0047] Specifically, the control module starts the air pump 46 to supply air to the engine pipe 6 to a set pressure, then starts the pneumatic vibrator 43, and the engine pipe 6 maintains the pressure for a set time. The acquisition module collects the pressure value detected by the pressure sensor 2 45 after the pressure is maintained, and compares the actual pressure leakage value to be recorded as Then the comparison module will compare the actual pressure leakage value Compared with the vibration state pressure leakage limit, the vibration state pressure leakage limit is , , the judgment module judges the air tightness of the engine pipeline 6.

[0048] exist > When , it indicates that the air tightness of the engine pipe 6 is poor under the vibration state, and the feedback is sent to the alarm module and the counting module. The counting module performs intermittent counting E, and the alarm module issues an alarm prompt.

[0049] exist ≤ When the engine pipe 6 is vibrating, the air tightness is good. =0, it is the ideal state.

[0050] It should be noted that the four supplementary tests in this step can be selected one by one to gradually judge and screen the parts that meet the actual usage conditions, or the order can be adjusted to gradually judge and screen the parts that meet the actual usage conditions. They can also be selected individually or partially at the same time to judge the air tightness of the parts in a single state or multiple states, but Supplementary Test 2 and Supplementary Test 3 cannot be selected at the same time, they can only be selected one after the other. When adjusting the order or partially selecting, the pressure leakage limit of the first supplementary test is the product of the leakage pressure limit coefficient of the corresponding state and the pressure leakage limit under normal temperature and pressure, and the pressure leakage limit of the subsequent supplementary test is the product of the leakage pressure limit coefficient of the subsequent state and the pressure leakage limit of the previous supplementary test. When selected at the same time, the pressure leakage limit of the supplementary test is the product of the leakage pressure limit coefficients of multiple states and the pressure leakage limit under normal temperature and pressure.

[0051] Step 4: The judgment module judges the main reason why the actual pressure leakage value of the engine pipeline 6 is large.

[0052] Specifically, when any group of the intermittent counts A, B, C, D and E of the engine pipes 6 of the same batch in step 2 and step 3 reaches the counting warning value, the corresponding detection state is the main reason affecting the air tightness of the engine pipe 6. After that, the staff retrieves the vacuum degree, temperature and vibration time when the actual pressure leakage value in the test is significantly increased, so as to facilitate targeted improvement and improve the air tightness of the engine pipe 6 in this state.

[0053] It should be noted that the clamping assembly can also be used to clamp other small and medium-sized aerospace parts, facilitating the airtightness detection of small and medium-sized aerospace parts, thereby expanding the scope of application of the device.

[0054] Through the above steps, not only can the air tightness test of aerospace parts be carried out at normal temperature and pressure, but the air tightness test in different environments can also be simulated, which is more in line with the actual applicable environment and improves the accuracy of the test results.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An airtightness detection device for aerospace parts based on AI technology, characterized in that: include: A test box (1), the test box (1) being used to set up and perform a test process; A pressure tank disposed inside the detection box (1), the pressure tank comprising a tank body (21), a tank door (22) and a connecting shaft (23), and used to provide a detection space; An engine pipe (6) disposed inside the pressure tank; A clamping assembly and a detection assembly are arranged inside the pressure tank, the clamping assembly is used to match the engine pipes (6) of various models and sizes, and the detection assembly is used to detect the temperature and pressure inside the pressure tank and the pressure inside the engine pipe (6); A temperature regulating component disposed on the left side of the clamping component, the temperature regulating component is used to regulate the internal temperature of the pressure tank to simulate a real use environment; The clamping assembly comprises two sets of slide rails (31), a bottom plate (35), a driving unit 1 (38), a driving unit 2 (310), a driving unit 3 (313), a plurality of sets of pressure measuring tubes (312) and a pressure relief tube; The detection assembly comprises a temperature sensor (41), a pressure sensor 1 (42) and a pneumatic vibrator (43); the temperature sensor (41) and the pressure sensor 1 (42) are fixed to the side of the tank door (22); the pneumatic vibrator (43) is fixed to the bottom of the bottom plate (35); the pressure tank is connected to a pipeline 1, the pipeline 1 is connected to a vacuum machine (44), the pipeline 1 is provided with a solenoid valve 1, the pressure measuring tube (312) is connected to a pipeline 2, the pipeline 2 is connected to an air pump (46), the pipeline 2 is provided with a solenoid valve 2 and a pressure sensor 2 (45); the pressure relief pipe is connected to a pipeline 3, the pipeline 3 is provided with a pressure relief valve (47); The detection box (1) is also provided with an intelligent detection system inside. The intelligent detection system is used to input a preset program, and then execute the air tightness detection of the engine pipeline (6) in various states according to the instruction, collect relevant data in real time and feed back, and make an air tightness judgment. The intelligent detection system comprises a collection module, a control module, a judgment module, a counting module, a data output module and an alarm module.

2. The air tightness detection device for aerospace parts based on AI technology according to claim 1 is characterized in that: A support plate (32) is fixedly connected to the slide rail (31), the cross section of the support plate (32) is concave, a connecting plate (33) is fixedly connected to the side of the support plate (32), a handle is fixedly connected to the connecting plate (33), a plurality of springs (34) are fixedly connected to the top of the support plate (32), the top of the spring (34) is fixedly connected to the bottom plate (35), and two groups of transverse slide grooves (36) are provided on the bottom plate (35), and the right side of the transverse slide groove (36) is fixedly connected to the bottom plate (35). ) is fixed to the right side of the base plate (35), the left side transverse slide groove (36) is slidably connected to the base plate (35), the transverse slide groove (36) is slidably connected to the vertical slide groove (37), the driving unit 1 (38) is arranged in the vertical slide groove (37), the vertical slide groove (37) is slidably connected to a connecting block (39), the driving unit 2 (310) is arranged in the vertical slide groove (37), and the driving unit 3 (313) is arranged on the side of the left transverse slide groove (36).

3. The air tightness detection device for aerospace parts based on AI technology according to claim 2 is characterized in that: The side of the connection block (39) is rotatably connected to the limit seat (311), the bottom of the limit seat (311) is provided with an anti-slip pad, and the pressure measuring tube (312) and the pressure relief tube are arranged on the limit seat (311).

4. The air tightness detection device for aerospace parts based on AI technology according to claim 1 is characterized in that: The temperature regulating assembly comprises a frame (51), a heating wire (53) and a refrigeration mechanism (55); the frame (51) is fixed to the right side inside the tank body (21); two sets of fans (52) are fixedly connected to the frame (51); the heating wire (53) is arranged on the side of the frame (51); the heating wire (53) passes through the tank body (21) and is fixedly connected to the tank body (21); a refrigerant inlet (54) is arranged on the tank body (21); the refrigerant inlet (54) is connected to a pipeline four; a solenoid valve three is arranged on the pipeline four; and the refrigeration mechanism (55) is connected to the refrigerant inlet (54).

5. The airtightness detection device for aerospace parts based on AI technology according to claim 4 is characterized in that: The acquisition module is electrically connected to the temperature sensor (41), the pressure sensor 1 (42), and the pressure sensor 2 (45), and is used to acquire the temperature and pressure inside the pressure tank and the pressure inside the engine pipeline (6). The control module is electrically connected to the pneumatic vibrator (43), the vacuum machine (44), the air pump (46), the solenoid valve 1, the solenoid valve 2, the solenoid valve 3, and the pressure relief valve (47), and is used to control opening and closing. The judgment module is provided with a leakage pressure limit value ∆F, and is used to judge the air tightness of the engine pipeline (6) under different conditions. The counting module is provided with a counting warning value, and is used to count. The data output module is electrically connected to the display screen, and is used to display the detection status and the inspection result. The alarm module is used to alarm.

6. The air tightness detection device for aerospace parts based on AI technology according to claim 1 is characterized in that: The detection box (1) comprises a box body (11) and a box door (12), wherein the box door (12) is hinged to the box body (11), and the box body (11) is provided with a display screen and a plurality of buttons for setting, executing and displaying a test process.

7. The air tightness detection device for aerospace parts based on AI technology according to claim 1 is characterized in that: The connecting shaft (23) is hinged on the left side of the tank body (21), the connecting shaft (23) is connected to the tank door (22) bearing, the upper bearing of the connecting shaft (23) is connected to a hand wheel (24), the hand wheel (24) is connected to the tank door (22) through a gear transmission, the tank body (21) and the tank door (22) are both provided with a limit block and a limit notch on the opposite side, and the tank body (21) is fixedly connected to the right side with a locking handle (25).

8. The airtightness detection device for aerospace parts based on AI technology according to claim 5 is characterized by: The detection method of the airtight detection device: Step 1: manually installing the engine pipeline (6) to be tested on the clamping assembly, and sealingly connecting the pressure measuring tube (312) and the pressure relief tube to the engine pipeline (6); Step 2: The tank door (22) remains open and an airtightness test is performed at normal temperature and pressure; Step 3: Supplementary testing of the air tightness of the engine pipeline (6) in an extreme environment; Step 4: The judgment module judges the main reason why the actual pressure leakage value of the engine pipeline (6) is large.

9. The air tightness detection device for aerospace parts based on AI technology according to claim 8 is characterized in that: The specific operation steps of step 2 are as follows: the control module controls the solenoid valve 2 to open, the air pump (46) to start, and the air is supplied to the engine pipeline (6); when the pressure inside the engine pipeline (6) reaches the set pressure, the solenoid valve 2 is closed, the air pump (46) is stopped, and the pressure is maintained for a set time; the acquisition module acquires the pressure value detected by the pressure sensor 2 (45) after the pressure is maintained, and compares the actual pressure leakage value to be recorded as , the subsequent comparison module will be the actual pressure leakage value and pressure leakage limit F is compared, and the judging module judges the air tightness of the engine pipe (6); exist > When F, the air tightness of the engine pipe (6) is poor at normal temperature and pressure; exist ≤ F, the engine pipe (6) has good air tightness at normal temperature and pressure. =0, it is the ideal state.

10. The air tightness detection device for aerospace parts based on AI technology according to claim 9 is characterized in that: The specific operation steps of step three are: the judgment module is also provided with leakage pressure limit coefficients under different environments, and can perform airtightness detection under vacuum, high temperature, low temperature and vibration conditions.

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