CN111060257A - Air tightness experiment testing device and testing method thereof - Google Patents
Air tightness experiment testing device and testing method thereof Download PDFInfo
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- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/10—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for containers, e.g. radiators
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Abstract
The invention discloses a testing device and a testing method for an air tightness experiment, and the testing device comprises a base and a case fixedly connected to the top of the base, wherein a partition plate is fixedly connected between two sides of the inner wall of the case, two sides of the top of the partition plate are respectively and fixedly connected with a hydraulic control unit, and the tops of the two hydraulic control units are both fixedly provided with adjusting components. This gas tightness experiment testing arrangement and test method, fine reached not only quick but also accurate carry out the purpose of gas tightness test, need not tester artificial observation bubble whether have, even bubble gas leakage, also can accurate discernment and judgement gas leakage position, detection error is little, the measuring accuracy is high, high durability and convenient use, test time is short, can lock gas leakage position fast and judge the gas leakage degree, need not tester cost a large amount of time to carry out many times gas tightness test, tester's intensity of labour has been reduced.
Description
Technical Field
The invention relates to the technical field of air tightness detection equipment, in particular to an air tightness experiment testing device and a testing method thereof.
Background
The air tightness test is mainly to check whether leakage occurs at each connecting part of the container, the toxicity degree of a medium is extreme and highly harmful or a pressure container which is not allowed to have trace leakage in design is required to be subjected to the air tightness test, and the pressure container is subjected to the air tightness test according to the following requirements:
(1) the air tightness test is carried out after the hydraulic test is qualified, the air tightness test and the air pressure test can be carried out simultaneously on the pressure container with the design requirement of the air pressure test, and the test pressure is the pressure of the air pressure test.
(2) The pressure vessel made of carbon steel and low alloy steel has the temperature of the gas for testing not lower than 5 deg.C, and the pressure vessel made of other materials is specified according to the design.
(3) The gas used for the gas tightness test should be dry, clean air, nitrogen or other inert gases.
(4) When the air tightness test is carried out, the safety accessories are required to be completely installed.
(5) During the test, the pressure is slowly increased, the pressure is maintained for 10 minutes after the specified test pressure is reached, then the pressure is reduced to the design pressure, all welding seams and connecting parts are coated with soapy water for inspection, and the product is qualified in terms of no leakage. If leakage exists, the hydraulic test and the air tightness test are carried out again after the repair.
At present, in the process of performing air tightness experimental test on a pressure vessel, high-pressure gas is mostly directly inflated into the pressure vessel, and then the pressure vessel is put into a water pool to penetrate through the bubble condition, however, the existence of bubbles is needed to be manually observed by a tester in the air tightness experimental test, because some bubbles are smaller, the error is larger through human eye observation, the air tightness test is inconvenient, the test time is long, the air leakage position and the air leakage degree cannot be quickly locked, in order to ensure the accuracy of the test result, the tester needs to spend a large amount of time to perform multiple air tightness tests, the labor intensity of the tester is increased, the method of adopting image acquisition and intelligent processing cannot be realized, human eye test identification is replaced, the purpose of performing the air tightness test quickly and accurately cannot be achieved, and great inconvenience is brought to the test work of the tester.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a device and a method for testing an air tightness experiment, and solves the problems that in the existing air tightness test experiment, a tester needs to manually observe whether bubbles exist, the air tightness part and the air tightness degree cannot be quickly locked due to the fact that some bubbles are small, the error is large and inconvenient to observe through human eyes, the testing time is long, in order to ensure the accuracy of a test result, the tester needs to spend a large amount of time for carrying out multiple air tightness tests, the labor intensity of the tester is increased, and the purpose of quickly and accurately carrying out the air tightness test cannot be achieved by adopting an image acquisition and intelligent processing method to replace human eye test identification.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an air tightness experiment testing arrangement, includes base and base top fixedly connected with machine case, fixedly connected with division board between the both sides of machine incasement wall, fixedly connected with hydraulic control unit respectively in the both sides at division board top, and the equal fixed mounting in top of two hydraulic control unit has adjusting part, adjusting part's one end is rotated through the moving part and is connected with image acquisition terminal, and the bottom of machine incasement wall has pneumatic pump, data processing module, data processing subassembly, wireless transceiver module and gas holder from a left side to the right side fixed mounting in proper order, the air inlet of pneumatic pump passes through the one side intercommunication of connecting pipe and gas holder, and the gas outlet of pneumatic pump and the opposite side of gas holder all communicate there is the air guide hose, the one end fixedly connected with thread connection cover of.
The adjusting part comprises a supporting frame, a triangular ejector rod is fixedly connected between the middle of the supporting frame and the top of the hydraulic control component, a rear arm rod is connected to the top of the supporting frame through pin rotation, one end, far away from the supporting frame, of the rear arm rod is connected with a front arm rod through pin rotation, an ejection hydraulic cylinder is connected between the bottom of the supporting frame and one end of the middle of the rear arm rod through rotation of a rotating piece, a front drive hydraulic cylinder is connected between the middle of the front arm rod and the other end of the middle of the rear arm rod through rotation of a rotating piece, one end, far away from the rear arm rod, of the front arm rod is connected with the top of the image acquisition terminal through rotation of a rotating piece, and an inclination adjusting device is movably mounted between one end.
Preferably, the hydraulic control unit comprises a control box, a hydraulic pump, an oil tank and a microcontroller are sequentially and fixedly mounted at the bottom of the inner wall of the control box from left to right, a liquid inlet of the hydraulic pump is communicated with one side of the oil tank through a connecting pipe, and two liquid outlets of the hydraulic pump are respectively communicated with the oil inlets of the ejection hydraulic cylinder and the precursor hydraulic cylinder through liquid guide hoses.
Preferably, the top of division board just is located fixedly connected with pressure vessel support piece between two hydraulic control unit, and the top of quick-witted case articulates through the hinge has the case lid, the equal fixed mounting in top of case lid and the front of quick-witted case has transparent glass window.
Preferably, an air pressure sensor is fixedly installed inside the air guide hose, and a computer interaction terminal is installed on one side of the case through a triangular support frame.
Preferably, inclination adjusting device includes dead lever and movable rod, the top fixed mounting of dead lever is on the forearm pole, and the surface threaded connection of dead lever bottom has the threaded sleeve, the one end of movable rod is passed through the connecting block and is connected with image acquisition terminal rotation, the top of movable rod runs through the threaded sleeve and extends to the telescopic inside of threaded sleeve, and the movable rod extends to the telescopic inside one end fixedly connected with limiting plate of threaded sleeve.
Preferably, the data processing assembly comprises a central processing module, an image preprocessing unit, an image recognition and analysis unit and a multi-image combination and analysis unit, and the central processing module is respectively electrically connected with the image preprocessing unit, the image recognition and analysis unit and the multi-image combination and analysis unit in a bidirectional mode.
Preferably, the central processing module is respectively electrically connected with the hydraulic control unit, the computer interaction terminal and the wireless transceiver module in a bidirectional manner, and the wireless transceiver module and the remote monitoring terminal realize bidirectional wireless transmission through a 4G network.
Preferably, the output end of the central processing module is electrically connected with the input ends of the air pressure sensor and the air pressure pump respectively, the input end of the data comparison module is electrically connected with the output end of the air pressure sensor, and the output end of the data comparison module is electrically connected with the input end of the central processing module.
The invention also discloses a testing method of the air tightness test device, which comprises the following steps:
s1, firstly, connecting the whole device with an external power supply through a power interface, then starting the whole testing device, inputting a system image processing algorithm and comparison data into a data processing assembly and a hydraulic control unit through a computer interaction terminal by a tester, then loading a pressure container to be tested into a case, and supporting and installing the pressure container to be tested through a pressure container supporting piece;
s2, after the pressure container to be detected is installed through the step S1, the computer interaction terminal is operated, the central processing module in the data processing assembly controls the microcontroller in the hydraulic control unit to start working, the microcontroller controls the hydraulic pump and the electromagnetic valve in the liquid guide hose to be opened and closed according to the input algorithm program to control the adjusting assembly to extend and retract in work, the rear arm rod can extend and retract through pumping pressure or pressure relief of the ejection hydraulic cylinder, and the front arm rod can extend and retract through pumping pressure or pressure relief of the front drive hydraulic cylinder, so that the image acquisition terminal is adjusted to the set monitoring position;
s3, simultaneously, a tester can manually rotate the threaded sleeve on the inclination angle adjusting device to adjust the up-down inclination angle of the image acquisition terminal, after the adjustment is completed, the threaded sleeve at one end of the air guide hose is screwed with the air inlet and outlet of the pressure container to be tested, then clear water is introduced into the case through the water inlet pipe communicated with the top of one side of the case, and after the liquid level completely submerges the pressure container to be tested, water addition is stopped;
s4, starting the air pressure pump to close the reflux valve, pumping the inert gas in the gas storage tank into the pressure container to be measured, comparing the air pressure value detected by the air pressure sensor through the data comparison module, stopping inflating after the air pressure value reaches a set value, maintaining the pressure for 30-40min, and shooting and monitoring the pressure container to be measured in an all-dimensional mode simultaneously by the four image acquisition terminals in the pressure maintaining process;
s5, transmitting the shot and monitored images to a data processing assembly in real time, controlling an A/D conversion module in an image preprocessing unit to convert the received image data into binary data by a central processing module, filtering and identifying the shot water wave characteristics and floating impurity characteristics by an image impurity filtering processing module, and updating impurity filtering algorithm in real time for impurity filtering requirement by a tester by an impurity filtering algorithm updating module;
s6, extracting rising bubble features from the image data preprocessed in the step S5 through an image feature extraction module in an image recognition analysis unit, carrying out comparison analysis on the rising bubble features and reference features through an image recognition comparison module, then calculating the similarity through a similarity analysis module, judging the air leakage features if the similarity reaches a standard value, and then transmitting the shot air leakage feature image data to a multi-image combination analysis unit for combined feature processing;
s7, dynamically analyzing the rising speed, the bubble size and the bubble position of rising bubble features respectively by a bubble speed image analysis module, a bubble size image analysis module and a bubble position image analysis module in the multi-image combined analysis unit, so as to determine the position and the air leakage degree of the pressure container with air leakage, then dynamically analyzing and processing the position and the air leakage degree, transmitting the dynamic analysis processing into a computer interaction terminal for displaying, and simultaneously transmitting the test result to a remote monitoring terminal in a wireless manner by a wireless transceiver module, thereby realizing wireless monitoring.
Preferably, the multi-image combination analysis unit includes a bubble velocity image analysis module, a bubble size image analysis module, and a bubble position image analysis module.
(III) advantageous effects
The invention provides a testing device and a testing method for an air tightness experiment. Compared with the prior art, the method has the following beneficial effects:
(1) the air tightness experiment testing device and the testing method thereof are characterized in that a partition plate is fixedly connected between two sides of the inner wall of a case, two sides of the top of the partition plate are respectively and fixedly connected with a hydraulic control unit, the tops of the two hydraulic control units are respectively and fixedly provided with an adjusting component, one end of each adjusting component is rotatably connected with an image acquisition terminal through a moving part, the bottom of the inner wall of the case is sequentially and fixedly provided with a pneumatic pump, a data processing module, a data processing component, a wireless transceiver module and an air storage tank from left to right, an air inlet of the pneumatic pump is communicated with one side of the air storage tank through a connecting pipe, an air outlet of the pneumatic pump is communicated with the other side of the air storage tank through an air guide hose, one end of the air guide hose is fixedly connected with a threaded connecting sleeve, the purpose of replacing human eye testing and identifying by, need not the existence of tester's manual observation bubble, even the bubble leaks gas, also can accurate discernment and judgement gas leakage position, detection error is little, and measurement accuracy is high, convenient to use, test time is short, can lock gas leakage position fast and judge gas leakage degree, need not tester cost a large amount of time and carry out many times gas tightness test, has reduced tester's intensity of labour to tester's test work has been made things convenient for greatly.
(2) The air tightness experiment testing device and the testing method thereof are characterized in that the adjusting component comprises a supporting frame, a triangular ejector rod is fixedly connected between the middle part of the supporting frame and the top part of the hydraulic control component, the top end of the supporting frame is rotationally connected with a rear arm rod through a pin, one end of the rear arm rod, far away from the supporting frame, is rotationally connected with a front arm rod through a pin, an ejection hydraulic cylinder is rotationally connected between one end of the middle part of the rear arm rod and the bottom end of the supporting frame through a rotating part, a front driving hydraulic cylinder is rotationally connected between the other end of the middle part of the rear arm rod and the middle part of the front arm rod through a rotating part, one end of the front arm rod, far away from the rear arm rod, is rotationally connected with the top part of the image acquisition terminal through a rotating part, an inclination angle adjusting device is, the automatic adjustment of the shooting position of the image acquisition terminal can be realized, and the full-coverage monitoring of four directions of the pressure container to be measured is realized by matching with the wide-angle image acquisition terminal.
(3) According to the air tightness experiment testing device and the testing method thereof, the head image is preprocessed before the image is identified and analyzed, the photographed water wave characteristic and the floating impurity characteristic are filtered and not identified, and meanwhile, a tester can update the filtering impurity algorithm in real time through the filtering impurity algorithm updating module, so that the identification precision is guaranteed, and the identification error is reduced.
(4) The air tightness experiment testing device and the testing method thereof comprise a control box on a hydraulic control unit, a hydraulic pump, an oil tank and a microcontroller are sequentially and fixedly mounted at the bottom of the inner wall of the control box from left to right, a liquid inlet of the hydraulic pump is communicated with one side of the oil tank through a connecting pipe, two liquid outlets of the hydraulic pump are respectively communicated with oil inlets of an ejection hydraulic cylinder and a precursor hydraulic cylinder through liquid guide hoses, hydraulic parts can be controlled by adopting an independent microcontroller, the disorder of an instant system control system is realized, the normal work of a hydraulic assembly cannot be influenced, and the safety of the whole air tightness testing device is greatly improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
FIG. 3 is a top view of the interior of the enclosure of the present invention;
FIG. 4 is a top view of the enclosure structure of the present invention;
FIG. 5 is a schematic view of the adjusting assembly of the present invention;
FIG. 6 is a schematic structural diagram of the reclining device of the present invention;
FIG. 7 is a schematic diagram of the hydraulic control unit of the present invention;
FIG. 8 is a schematic block diagram of the architecture of the system of the present invention;
FIG. 9 is a schematic block diagram of the structure of a multi-image combination analysis unit according to the present invention;
FIG. 10 is a schematic diagram of an algorithm of the image pre-processing unit of the present invention.
In the figure, 1 base, 2 chassis, 3 splitter plate, 4 hydraulic control unit, 41 control box, 42 hydraulic pump, 43 oil tank, 44 microcontroller, 5 adjusting component, 51 supporting frame, 52 triangular ejector rod, 53 rear arm rod, 54 front arm rod, 55 ejection hydraulic cylinder, 56 front drive hydraulic cylinder, 57 tilt angle adjusting device, 571 fixed rod, 572 movable rod, 573 threaded sleeve, 574 limiting plate, 6 image acquisition terminal, 7 pneumatic pump, 8 data processing module, 9 data processing component, 91 central processing module, 92 image preprocessing unit, 93 image identification and analysis unit, 94 multi-image combination and analysis unit, 10 wireless transceiver module, 11 gas storage tank, 12 gas guide hose, 13 threaded connecting sleeve, 14 pressure container supporting piece, 15 box cover, 16 transparent glass window, 17 air pressure sensor, 18 computer interaction terminal, and 19 remote monitoring terminal.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 10, an embodiment of the present invention provides a technical solution: an air tightness experiment testing device comprises a base 1 and a case 2 fixedly connected to the top of the base 1, a partition plate 3 is fixedly connected between two sides of the inner wall of the case 2, two sides of the top of the partition plate 3 are respectively and fixedly connected with a hydraulic control unit 4, adjusting components 5 are fixedly installed on the tops of the two hydraulic control units 4, one end of each adjusting component 5 is rotatably connected with an image acquisition terminal 6 through a moving part, a pneumatic pump 7, a data processing module 8, a data processing component 9, a wireless transceiver module 10 and an air storage tank 11 are fixedly installed on the bottom of the inner wall of the case 2 from left to right in sequence, an air inlet of the pneumatic pump 7 is communicated with one side of the air storage tank 11 through a connecting pipe, an air outlet of the pneumatic pump 7 and the other side of the air storage tank 11 are communicated with air guide hoses 12, one end of each air guide hose, the bottom of the inner wall of the control box 41 is fixedly provided with a hydraulic pump 42, an oil tank 43 and a microcontroller 44 from left to right in sequence, a liquid inlet of the hydraulic pump 42 is communicated with one side of the oil tank 43 through a connecting pipe, two liquid outlets of the hydraulic pump 42 are communicated with oil inlets of an ejection hydraulic cylinder 55 and a precursor hydraulic cylinder 56 through liquid guide hoses respectively, the top of the partition plate 3 is positioned between two hydraulic control units 4 and is fixedly connected with a pressure container support 14, the top of the case 2 is hinged with a case cover 15 through hinges, transparent glass windows 16 are fixedly arranged on the top of the case cover 15 and the front of the case 2, an air pressure sensor 17 is fixedly arranged inside the air guide hose 12, and a computer interaction terminal 18 is arranged on one side of the case.
The adjusting component 5 comprises a supporting frame 51, a triangular top rod 52 is fixedly connected between the middle part of the supporting frame 51 and the top part of the hydraulic control component 4, the top end of the supporting frame 51 is rotatably connected with a rear arm rod 53 through a pin, one end of the rear arm rod 53 far away from the supporting frame 51 is rotatably connected with a front arm rod 54 through a pin, one end of the middle part of the rear arm rod 53 and the bottom end of the supporting frame 51 are rotatably connected with an ejection hydraulic cylinder 55 through a rotating part, the other end of the middle part of the rear arm rod 53 and the middle part of the front arm rod 54 are rotatably connected with a front drive hydraulic cylinder 56 through a rotating part, one end of the front arm rod 54 far away from the rear arm rod 53 is rotatably connected with the top part of the image acquisition terminal 6 through a rotating part, an inclination angle adjusting device 57 is movably installed between one end of the front arm rod 54 close, the top end of the fixed rod 571 is fixedly mounted on the forearm rod 54, the outer surface of the bottom end of the fixed rod 571 is in threaded connection with a threaded sleeve 573, one end of the movable rod 572 is rotatably connected with the image acquisition terminal 6 through a connecting block, the top end of the movable rod 572 penetrates through the threaded sleeve 573 and extends into the threaded sleeve 573, and one end of the movable rod 572 extending into the threaded sleeve 573 is fixedly connected with a limiting plate 574.
The data processing component 9 comprises a central processing module 91, an image preprocessing unit 92, an image recognition and analysis unit 93 and a multi-image combination and analysis unit 94, wherein the central processing module 91 is respectively in bidirectional electrical connection with the image preprocessing unit 92, the image recognition and analysis unit 93 and the multi-image combination and analysis unit 94, the central processing module 91 is respectively in bidirectional electrical connection with the hydraulic control unit 4, the computer interaction terminal 18 and the wireless transceiver module 10, the wireless transceiver module 10 and the remote monitoring terminal 19 realize bidirectional wireless transmission through a 4G network, the output end of the central processing module 91 is respectively in electrical connection with the input ends of the air pressure sensor 17 and the air pressure pump 7, the input end of the data comparison module 8 is electrically connected with the output end of the air pressure sensor 17, and the output end of the data comparison module 8 is electrically connected with the input end of the central processing module 91, in fig. 10, e (n) is a cost function called as an error signal, which is a difference between a desired signal and an estimated signal, and then iterative processing is performed on a wired impulse response function and the cost function to obtain a correction factor of a filtering coefficient, and the image filter estimates the desired signal by performing convolution on an input signal and an impulse response, and finally, adaptive filtering can be realized by adding the correction factor to a filtering algorithm.
The invention also discloses a testing method of the air tightness test device, which comprises the following steps:
s1, firstly, connecting the whole device with an external power supply through a power interface, then starting the whole testing device, inputting a system image processing algorithm and comparison data into the data processing assembly 9 and the hydraulic control unit 4 through the computer interaction terminal 18 by a tester, then loading the pressure container to be tested into the case 2, and supporting and installing the pressure container to be tested through the pressure container supporting piece 14;
s2, after the pressure container to be detected is installed through the step S1, the computer interaction terminal 18 is operated, the central processing module 91 in the data processing assembly 9 controls the microcontroller 44 in the hydraulic control unit 4 to start working, the microcontroller 44 controls the opening and closing of the hydraulic pump 42 and the electromagnetic valves in the liquid guide hoses according to the input algorithm program to control the adjusting assembly 5 to extend and retract in work, the rear arm rod 53 can extend and retract through pumping or pressure relief of the ejection hydraulic cylinder 55, and the front arm rod 54 can extend and retract through pumping or pressure relief of the front drive hydraulic cylinder 56, so that the image acquisition terminal 6 is adjusted to the set monitoring position;
s3, simultaneously, a tester can manually rotate the threaded sleeve 573 on the inclination angle adjusting device 57 to adjust the up-down inclination angle of the image acquisition terminal 6, after the adjustment is finished, the threaded sleeve 13 at one end of the air guide hose 12 is screwed with an air inlet and an air outlet of the pressure container to be tested, then clear water is introduced into the case 2 through a water inlet pipe communicated with the top of one side of the case 2, and after the pressure container to be tested is completely submerged by the liquid level, the water addition is stopped;
s4, starting the air pressure pump 7 to close the reflux valve, pumping the inert gas in the gas storage tank 11 into the pressure container to be measured, comparing the air pressure value detected by the air pressure sensor 17 through the data comparison module 8, stopping inflating after the set value is reached, maintaining the pressure for 30-40min, and shooting and monitoring the pressure container to be measured in all directions by the four image acquisition terminals 6 simultaneously in the pressure maintaining process;
s5, transmitting the shot and monitored images to the data processing component 9 in real time, controlling an A/D conversion module in the image preprocessing unit 92 to convert the received image data into binary data by the central processing module 91, filtering the shot water wave characteristics and floating impurity characteristics by the image impurity filtering processing module without recognition, and updating the impurity filtering algorithm in real time for impurity filtering by a tester through the impurity filtering algorithm updating module;
s6, extracting rising bubble features from the image data preprocessed in the step S5 through an image feature extraction module in the image recognition and analysis unit 93, performing comparison and analysis on the rising bubble features and the reference features through an image recognition and comparison module, calculating the similarity through a similarity analysis module, judging the image data as the air leakage features if the similarity reaches a standard value, and transmitting the shot air leakage feature image data to the multi-image combination and analysis unit 94 for combined feature processing;
s7, a bubble velocity image analysis module, a bubble size image analysis module and a bubble position image analysis module in the multi-image combination analysis unit 94 respectively perform dynamic analysis processing on the rising velocity, the bubble size and the bubble position of rising bubble characteristics, so as to determine the position and the air leakage degree of the air leakage of the pressure container, then transmit the dynamic analysis processing into the computer interaction terminal 18 for display, and simultaneously transmit the test result to the remote monitoring terminal 19 through the wireless transceiver module 10 in a wireless manner, thereby realizing wireless monitoring.
In the present invention, the multi-image combination analysis unit 94 includes a bubble velocity image analysis module, a bubble size image analysis module, and a bubble position image analysis module.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an air tightness experiment testing arrangement, includes base (1) and base (1) top fixedly connected with machine case (2), its characterized in that: a partition plate (3) is fixedly connected between two sides of the inner wall of the case (2), two sides of the top of the partition plate (3) are respectively and fixedly connected with a hydraulic control unit (4), and the top parts of the two hydraulic control units (4) are both fixedly provided with an adjusting component (5), one end of the adjusting component (5) is rotationally connected with an image acquisition terminal (6) through a movable part, and the bottom of the inner wall of the case (2) is fixedly provided with a pneumatic pump (7), a data processing module (8), a data processing component (9), a wireless transceiver module (10) and an air storage tank (11) from left to right in turn, an air inlet of the pneumatic pump (7) is communicated with one side of the air storage tank (11) through a connecting pipe, and the air outlet of the pneumatic pump (7) and the other side of the air storage tank (11) are both communicated with an air guide hose (12), one end of the air guide hose (12) is fixedly connected with a threaded connecting sleeve (13);
adjusting part (5) includes support frame (51), fixedly connected with triangle ejector pin (52) between the top of the middle part of support frame (51) and hydraulic control subassembly (4), and the top of support frame (51) is connected with back armed lever (53) through the pin rotation, and the one end that support frame (51) were kept away from in back armed lever (53) is connected with forearm pole (54) through the pin rotation, rotate through rotating between the one end at back armed lever (53) middle part and the bottom of support frame (51) and be connected with ejection hydraulic cylinder (55), and rotate through rotating between the other end at back armed lever (53) middle part and the middle part of forearm pole (54) and be connected with forerunner hydraulic cylinder (56), the one end that back armed lever (53) was kept away from in forearm pole (54) is rotated through the top of rotating piece and image acquisition terminal (6) and is connected, and movable mounting has the slope between the top of one end that forearm pole (54) is close to image acquisition terminal (6) and image acquisition terminal ( An angle adjusting device (57).
2. The airtightness test apparatus according to claim 1, wherein: the hydraulic control unit (4) comprises a control box (41), a hydraulic pump (42), an oil tank (43) and a microcontroller (44) are sequentially and fixedly mounted at the bottom of the inner wall of the control box (41) from left to right, a liquid inlet of the hydraulic pump (42) is communicated with one side of the oil tank (43) through a connecting pipe, and two liquid outlets of the hydraulic pump (42) are communicated with oil inlets of an ejection hydraulic cylinder (55) and a precursor hydraulic cylinder (56) through liquid guide hoses respectively.
3. The airtightness test apparatus according to claim 1, wherein: the top of division board (3) just is located fixedly connected with pressure vessel support piece (14) between two hydraulic control unit (4), and the top of quick-witted case (2) articulates through the hinge has case lid (15), equal fixed mounting in the top of case lid (15) and the front of quick-witted case (2) has transparent glass window (16).
4. The airtightness test apparatus according to claim 1, wherein: an air pressure sensor (17) is fixedly mounted inside the air guide hose (12), and a computer interaction terminal (18) is mounted on one side of the case (2) through a triangular support frame.
5. The airtightness test apparatus according to claim 1, wherein: the inclination angle adjusting device (57) comprises a fixed rod (571) and a movable rod (572), the top end of the fixed rod (571) is fixedly installed on the forearm rod (54), the outer surface of the bottom end of the fixed rod (571) is in threaded connection with a threaded sleeve (573), one end of the movable rod (572) is in rotary connection with the image acquisition terminal (6) through a connecting block, the top end of the movable rod (572) penetrates through the threaded sleeve (573) and extends into the threaded sleeve (573), and one end of the movable rod (572) extending into the threaded sleeve (573) is fixedly connected with a limiting plate (574).
6. The airtightness test apparatus according to claim 1, wherein: the data processing assembly (9) comprises a central processing module (91), an image preprocessing unit (92), an image recognition analysis unit (93) and a multi-image combination analysis unit (94), wherein the central processing module (91) is respectively electrically connected with the image preprocessing unit (92), the image recognition analysis unit (93) and the multi-image combination analysis unit (94) in a bidirectional mode.
7. The airtightness test apparatus according to claim 6, wherein: the central processing module (91) is respectively electrically connected with the hydraulic control unit (4), the computer interaction terminal (18) and the wireless transceiver module (10) in a bidirectional mode, and the wireless transceiver module (10) and the remote monitoring terminal (19) achieve bidirectional wireless transmission through a 4G network.
8. The airtightness test apparatus according to claim 6, wherein: the output end of the central processing module (91) is electrically connected with the input ends of the air pressure sensor (17) and the air pressure pump (7) respectively, the input end of the data comparison module (8) is electrically connected with the output end of the air pressure sensor (17), and the output end of the data comparison module (8) is electrically connected with the input end of the central processing module (91).
9. A method for testing the airtightness experimental test apparatus according to any one of claims 1 to 8, wherein: the method specifically comprises the following steps:
s1, firstly, connecting the whole device with an external power supply through a power interface, then starting the whole testing device, inputting a system image processing algorithm and comparison data into a data processing component (9) and a hydraulic control unit (4) by a tester through a computer interaction terminal (18), then loading a pressure container to be tested into a case (2), and supporting and installing the pressure container to be tested through a pressure container supporting piece (14);
s2, after the pressure container to be detected is installed through the step S1, the computer interaction terminal (18) is operated, the central processing module (91) in the data processing assembly (9) controls the microcontroller (44) in the hydraulic control unit (4) to start working, the microcontroller (44) controls the opening and closing of the hydraulic pump (42) and the electromagnetic valve in the liquid guide hose according to an input algorithm program to control the adjusting assembly (5) to extend and retract in work, the rear arm rod (53) can extend and retract through pumping pressure or pressure relief of the ejection hydraulic cylinder (55), the front arm rod (54) can extend and retract through pumping pressure or pressure relief of the front drive hydraulic cylinder (56), and the image acquisition terminal (6) is adjusted to a set monitoring position;
s3, simultaneously, a tester can manually rotate a threaded sleeve (573) on the inclination angle adjusting device (57) to adjust the vertical inclination angle of the image acquisition terminal (6), after the adjustment is finished, the threaded sleeve (13) at one end of the air guide hose (12) is screwed with an air inlet and an air outlet of the pressure container to be tested, clear water is introduced into the case (2) through a water inlet pipe communicated with the top of one side of the case (2), and after the liquid level completely submerges the pressure container to be tested, the water addition is stopped;
s4, starting the air pressure pump (7) to close the reflux valve, pumping the inert gas in the gas storage tank (11) into the pressure container to be measured, comparing the air pressure value detected by the air pressure sensor (17) through the data comparison module (8), stopping inflating after the set value is reached, maintaining the pressure for 30-40min, and shooting and monitoring all directions of the pressure container to be measured simultaneously by the four image acquisition terminals (6) in the pressure maintaining process;
s5, shooting and monitoring images and transmitting the images to a data processing component (9) in real time, wherein a central processing module (91) controls an A/D conversion module in an image preprocessing unit (92) to convert the received image data into binary data, then the shot water wave characteristics and floating impurity characteristics are filtered and not identified through an image impurity filtering processing module, and meanwhile, a tester can update an impurity filtering algorithm in real time for impurity filtering through an impurity filtering algorithm updating module;
s6, extracting the rising bubble features from the image data preprocessed in the step S5 through an image feature extraction module in an image recognition analysis unit (93), carrying out comparison analysis on the rising bubble features and the reference features through an image recognition comparison module, then calculating the similarity through a similarity analysis module, if the similarity reaches a standard value, judging the rising bubble features as the air leakage features, and then transmitting the shot air leakage feature image data to a multi-image combination analysis unit (94) for combined feature processing;
s7, a bubble velocity image analysis module, a bubble size image analysis module and a bubble position image analysis module in the multi-image combination analysis unit (94) respectively carry out dynamic analysis processing on the rising velocity, the bubble size and the bubble position of rising bubble characteristics, so that the position and the air leakage degree of the pressure container with air leakage are judged, then the dynamic analysis processing is transmitted into a computer interaction terminal (18) for displaying, and meanwhile, a test result can be wirelessly transmitted to a remote monitoring terminal (19) through a wireless transceiver module (10), so that wireless monitoring is realized.
10. The testing method of the airtightness test apparatus according to claim 9, wherein: the multi-image combination analysis unit (94) includes a bubble velocity image analysis module, a bubble size image analysis module, and a bubble position image analysis module.
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