Validity verification method and device of air tightness detection system and air tightness detection system

Abstract

The invention discloses a validity verification method and device of an air tightness detection system and the air tightness detection system. The method comprises the following steps: calibrating equivalent volumes of a to-be-tested piece and a test pipeline in an air tightness detection system according to data of the to-be-tested piece before a detector is connected to a standard leak hole and after the to-be-tested piece is connected to the standard leak hole; and carrying out system validity verification on the air tightness detection system based on the equivalent volume. According to the volume calibration method, only data obtained after the detector is not connected into the standard leak hole and data obtained after the detector is inserted into the standard leak hole need to be compared, and the whole set of equipment of the air tightness detection system does not need to be disassembled, so that the equivalent volume of the to-be-detected piece and the test pipeline in the air tightness detection system can be quickly and accurately calibrated; therefore, the accuracy of the measurement result can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to airtightness detection, and in particular to a method, device, electronic equipment, storage medium and airtightness detection system for verifying the effectiveness of an airtightness detection system. Background Art

[0002] The vehicle water cooling controller has coolant flow channels and cavities. When there is a defect in the controller that causes coolant leakage, it will affect the driving safety of the vehicle. Therefore, waterproof testing is required.

[0003] Existing waterproof tests usually use differential pressure method to detect air tightness. The air tightness detection system injects a certain pressure gas into the test object, such as a water cooling controller, and determines whether there is a leak by the pressure difference. However, this method is extremely demanding on the stability of the test system and the consistency of the environment. Due to the particularity of the test method, a slight fluctuation in the volume parameters of the test object will have a great impact on the final test results.

[0004] For such a precise measurement system, a strict method is needed to calibrate and verify the effectiveness of the system, so as to eliminate the errors caused by the system itself from affecting the final measurement results.

[0005] However, the prior art lacks a method for calibrating the volume of the object to be tested, resulting in an inability to accurately verify. Summary of the invention

[0006] Based on this, it is necessary to provide a method, device, electronic equipment, storage medium and airtightness detection system for verifying the effectiveness of an airtightness detection system in order to address the technical problem that the prior art lacks a method for quickly calibrating the volume of a test piece.

[0007] The present invention provides a method for verifying the effectiveness of an airtightness detection system, wherein the airtightness detection system at least comprises a test piece, a test pipeline and a detector, wherein the test piece is connected to the detector via the test pipeline, and the method comprises:

[0008] Calibrate the equivalent volume of the test piece and the test pipeline in the air tightness detection system according to the data of the test piece before and after the tester is connected to the standard leak hole;

[0009] Based on the equivalent volume, the airtightness detection system is verified for system effectiveness.

[0010] Furthermore, the detector is a differential pressure air tightness detector, and the equivalent volume of the test piece and the test pipeline in the air tightness detection system is calibrated according to the data of the test piece before and after the test piece is connected to the standard leak hole, including:

[0011] Obtain a first pressure difference obtained by measuring the piece to be tested by a pressure differential air tightness tester, and obtain a second pressure difference obtained by measuring the piece to be tested again after the pressure differential air tightness tester is connected to a standard leak hole. Calibrate the equivalent volume of the piece to be tested and the test pipeline in the air tightness testing system based on the first pressure difference and the second pressure difference. The first pressure difference is the pressure difference between the piece to be tested and the standard tank when the tester is not connected to the standard leak hole, and the second pressure difference is the pressure difference between the piece to be tested and the standard tank when the tester is connected to the standard leak hole.

[0012] Furthermore, the step of obtaining a first pressure difference of the test piece measured by a pressure differential airtightness detector, and obtaining a second pressure difference measured again after the pressure differential airtightness detector is connected to a standard leak hole, and calibrating the equivalent volume of the test piece and the test pipeline in the airtightness detection system based on the first pressure difference and the second pressure difference includes:

[0013] Set the to-be-determined equivalent volume of the test piece and the test pipeline as the initial volume value;

[0014] Obtaining one or more first pressure differences obtained by measuring the test piece through a differential pressure air tightness detector that is not connected to a standard leak hole;

[0015] converting one or more of the first pressure differences into a first conversion leakage amount based on the to-be-determined equivalent volume, and calculating an average value of the first conversion leakage amounts as a first leakage amount;

[0016] Obtain one or more second pressure differences measured again after the pressure differential air tightness detector is connected to the standard leak hole, convert the one or more second pressure differences into a second converted leakage amount based on the equivalent volume to be determined, and calculate the average value of the second converted leakage amount as the second leakage amount;

[0017] If the sum of the first leakage and the leakage of the standard leak hole is equal to the second leakage, the equivalent volume of the test piece and the test pipeline is the equivalent volume to be determined; otherwise, after updating the equivalent volume to be determined, the second leakage is calculated again until the sum of the first leakage and the leakage of the standard leak hole is equal to the second leakage.

[0018] Furthermore, based on the equivalent volume, the system effectiveness verification of the airtightness detection system includes:

[0019] Acquire modification test data obtained by testing a modified test piece modified from the test piece through the air tightness testing system, wherein the modified test piece is connected to the test pipeline without air holes, and the modification test data is a leakage value obtained by testing the modified test piece based on the equivalent volume;

[0020] Acquire first normal test data obtained by testing a normal DUT that has not been modified through the air tightness testing system, wherein the normal DUT is connected to the test pipeline through an air hole, and the first normal test data is a leakage value obtained by testing the normal DUT based on the equivalent volume;

[0021] The system effectiveness of the airtightness detection system is verified based on the modified detection data and the first normal detection data.

[0022] Furthermore, the system validity verification of the airtightness detection system is performed according to the modified detection data and the normal detection data, including:

[0023] Calculating the measuring tool repeatability capability index according to the maximum and minimum differences in the reformed test data and the standard deviation of the first normal test data;

[0024] If the measuring tool repeatability capability index meets the acceptance criteria, second normal test data obtained by testing multiple normal test pieces through the airtightness test system is obtained, and the airtightness test system is verified for system effectiveness based on the second normal test data. Otherwise, the airtightness test system is judged to be unacceptable, and the second normal test data is the leakage value obtained by testing the normal test pieces based on the equivalent volume.

[0025] Further, the performing system validity verification on the airtightness detection system according to the second normal detection data includes:

[0026] Calculate a repeatability index, a reproducibility index, and a fluctuation index according to the second normal detection data;

[0027] Calculating a repeatability and reproducibility index according to the repeatability index and the reproducibility index;

[0028] Calculating the total variation based on the repeatability index, the reproducibility index, and the fluctuation index;

[0029] The system effectiveness of the airtightness detection system is judged according to the repeatability and reproducibility index and the total variation index.

[0030] The present invention provides a validity verification device for an airtightness detection system, wherein the airtightness detection system at least comprises a test piece, a test pipeline and a detector, wherein the test piece is connected to the detector via the test pipeline, and the device comprises:

[0031] A calibration module, used to calibrate the equivalent volume of the test piece and the test pipeline in the air tightness detection system according to the data of the test piece before and after the tester is connected to the standard leak hole;

[0032] A verification module is used to verify the system effectiveness of the airtightness detection system based on the equivalent volume.

[0033] The present invention provides an electronic device, comprising:

[0034] at least one processor; and,

[0035] a memory communicatively connected to at least one of the processors; wherein,

[0036] The memory stores instructions that can be executed by at least one of the processors. The instructions are executed by at least one of the processors so that the at least one processor can execute the validity verification method of the airtightness detection system as described above.

[0037] The present invention provides a storage medium, wherein the storage medium stores computer instructions. When a computer executes the computer instructions, the storage medium is used to execute all steps of the validity verification method of the airtightness detection system as described above.

[0038] The present invention provides an airtightness detection system, comprising: a workpiece to be tested, a test pipeline, a first blocking cylinder, a second blocking cylinder, a detection instrument, a connecting pipeline, an air source and an air source pipeline, wherein the first blocking cylinder is connected to the first connecting end of the workpiece to be tested through a first cylinder plug with an air hole, and the second blocking cylinder is connected to the second connecting end of the workpiece to be tested through a closed second cylinder plug, the air inlet end of the first blocking cylinder is connected to one end of the test pipeline, and the other end of the test pipeline is connected to the detection instrument, the air inlet end of the first blocking cylinder is connected to the air hole, the air source is connected to the detection instrument through the connecting pipeline, and the air source is respectively connected to the first blocking cylinder and the second blocking cylinder through the air source pipeline, and the effectiveness verification method of the airtightness detection system as described above is executed to verify the effectiveness of the airtightness detection system.

[0039] The present invention calibrates the equivalent volume of the test piece and the test pipeline in the air tightness detection system according to the data of the test piece before and after the test instrument is connected to the standard leak hole, and verifies the system effectiveness of the air tightness detection system based on the equivalent volume. The volume calibration of the present invention only needs to compare the data of the test instrument before and after the standard leak hole is connected to the test instrument, and does not need to disassemble the entire set of equipment of the air tightness detection system. Therefore, the equivalent volume of the test piece and the test pipeline in the air tightness detection system can be calibrated quickly and accurately, thereby greatly improving the accuracy of the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1This is a workflow diagram of a method for verifying the effectiveness of an airtightness detection system according to an embodiment of the present invention;

[0041] Figure 2 This is a workflow diagram of a method for verifying the effectiveness of an airtightness detection system according to another embodiment of the present invention;

[0042] Figure 3 This is a flowchart of the equivalent volume calibration method according to the best embodiment of the present invention;

[0043] Figure 4 A schematic diagram of an air tightness detection system using a modified test piece according to an embodiment of the present invention;

[0044] Figure 5 An embodiment of the present invention uses a normal test piece airtightness detection system

[0045] Figure 6 A schematic diagram of a validity verification device for an airtightness detection system according to an embodiment of the present invention;

[0046] Figure 7 The figure is a schematic diagram of the hardware structure of an electronic device of the present invention. DETAILED DESCRIPTION

[0047] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. The same components are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0048] like Figure 1 The figure shows a workflow diagram of a method for verifying the effectiveness of an airtightness detection system according to an embodiment of the present invention. The airtightness detection system at least includes a test piece, a test pipeline, and a detector. The test piece is connected to the detector through the test pipeline. The method includes:

[0049] Step S101, calibrating the equivalent volume of the test piece and the test pipeline in the air tightness detection system according to the data of the test piece before and after the tester is connected to the standard leak hole;

[0050] Step S102: Based on the equivalent volume, verify the effectiveness of the airtightness detection system.

[0051] Specifically, the present invention can be applied to electronic devices having processing capabilities.

[0052] The electronic device first executes step S101 to calibrate the equivalent volume of the test piece and the test pipeline in the air tightness detection system according to the data of the test piece before and after the tester is connected to the standard leak hole.

[0053] Specifically, the test piece may be any component that needs to be tested for air tightness, such as a water cooling controller of a vehicle.

[0054] The test piece is tested by the tester.

[0055] In some embodiments, the detector is a differential pressure airtightness detector. The principle of the differential pressure airtightness detector is simply described as filling high-pressure gas into the test piece and the standard tank at the same time, closing the valve, and then a differential pressure sensor between the test piece and the standard tank detects the pressure difference between the two, and the leakage amount is obtained based on the pressure difference.

[0056] When the detector is not connected to the standard leak hole, a set of data is obtained through the detector, and then another set of data is obtained after the detector is connected to the standard leak hole. Since the standard leak hole has a fixed specification, a fixed leakage amount will be obtained. The conversion between leakage amount and pressure difference is obtained based on the equivalent volume of the test piece and the test pipeline. Therefore, by comparing the data before and after connection, the equivalent volume of the test piece and the test pipeline can be obtained.

[0057] The equivalent volume of the test piece and the test pipeline is the effective volume in the airtightness detection system. Therefore, after calibrating the equivalent volume of the test piece and the test pipeline, step S102 can be performed to verify the system effectiveness of the airtightness detection system based on the equivalent volume. Specifically, the system effectiveness verification of the airtightness detection system requires the calculation of the leakage amount. Therefore, the system effectiveness verification of the airtightness detection system is performed based on the leakage amount calculated by the equivalent volume.

[0058] The present invention calibrates the equivalent volume of the test piece and the test pipeline in the air tightness detection system according to the data of the test piece before and after the test instrument is connected to the standard leak hole, and verifies the system effectiveness of the air tightness detection system based on the equivalent volume. The volume calibration of the present invention only needs to compare the data of the test instrument before and after the standard leak hole is connected to the test instrument, and does not need to disassemble the entire set of equipment of the air tightness detection system. Therefore, the equivalent volume of the test piece and the test pipeline in the air tightness detection system can be calibrated quickly and accurately, thereby greatly improving the accuracy of the measurement results.

[0059] like Figure 2 The figure shows a working flow chart of a method for verifying the effectiveness of an airtightness detection system in another embodiment of the present invention. The airtightness detection system at least includes a test piece, a test pipeline and a detector. The test piece is connected to the detector through the test pipeline. The method includes:

[0060] Step S201, obtain the first pressure difference measured by the differential pressure air tightness tester for the test piece, and obtain the second pressure difference measured again after the differential pressure air tightness tester is connected to the standard leak hole, and calibrate the equivalent volume of the test piece and the test pipeline in the air tightness testing system based on the first pressure difference and the second pressure difference, the first pressure difference being the pressure difference between the test piece and the standard tank when the tester is not connected to the standard leak hole, and the second pressure difference being the pressure difference between the test piece and the standard tank when the tester is connected to the standard leak hole.

[0061] In one embodiment, the method of obtaining a first pressure difference of the test piece measured by a pressure differential airtightness detector, and obtaining a second pressure difference measured again after the pressure differential airtightness detector is connected to a standard leak hole, and calibrating the equivalent volume of the test piece and the test pipeline in the airtightness detection system based on the first pressure difference and the second pressure difference includes:

[0062] Set the to-be-determined equivalent volume of the test piece and the test pipeline as the initial volume value;

[0063] Obtaining one or more first pressure differences obtained by measuring the test piece through a differential pressure air tightness detector that is not connected to a standard leak hole;

[0064] converting one or more of the first pressure differences into a first conversion leakage amount based on the to-be-determined equivalent volume, and calculating an average value of the first conversion leakage amounts as a first leakage amount;

[0065] Obtain one or more second pressure differences measured again after the pressure differential air tightness detector is connected to the standard leak hole, convert the one or more second pressure differences into a second converted leakage amount based on the equivalent volume to be determined, and calculate the average value of the second converted leakage amount as the second leakage amount;

[0066] If the sum of the first leakage and the leakage of the standard leak hole is equal to the second leakage, the equivalent volume of the test piece and the test pipeline is the equivalent volume to be determined; otherwise, after updating the equivalent volume to be determined, the second leakage is calculated again until the sum of the first leakage and the leakage of the standard leak hole is equal to the second leakage.

[0067] Step S202, obtaining modification test data of the modified DUT that is modified by testing the modified DUT through the air tightness testing system, wherein the modified DUT is connected to the test pipeline without air holes, and the modification test data is a leakage value obtained by testing the modified DUT based on the equivalent volume.

[0068] Step S203, obtaining first normal detection data obtained by detecting a normal DUT that has not been modified through the air tightness detection system, wherein the normal DUT is connected to the test pipeline via an air hole, and the first normal detection data is a leakage value obtained by detecting the normal DUT based on the equivalent volume.

[0069] Step S204: verifying the effectiveness of the airtightness detection system according to the modified detection data and the first normal detection data.

[0070] In one embodiment, the system validity verification of the airtightness detection system according to the modified detection data and the normal detection data includes:

[0071] Calculating the measuring tool repeatability capability index according to the maximum and minimum differences in the reformed test data and the standard deviation of the first normal test data;

[0072] If the measuring tool repeatability capability index meets the acceptance criteria, second normal test data obtained by testing multiple normal test pieces through the airtightness test system is obtained, and the airtightness test system is verified for system effectiveness based on the second normal test data. Otherwise, the airtightness test system is judged to be unacceptable, and the second normal test data is the leakage value obtained by testing the normal test pieces based on the equivalent volume.

[0073] In one embodiment, the performing system validity verification on the airtightness detection system according to the second normal detection data includes:

[0074] Calculate a repeatability index, a reproducibility index, and a fluctuation index according to the second normal detection data;

[0075] Calculating a repeatability and reproducibility index according to the repeatability index and the reproducibility index;

[0076] Calculating the total variation based on the repeatability index, the reproducibility index, and the fluctuation index;

[0077] The system effectiveness of the airtightness detection system is judged according to the repeatability and reproducibility index and the total variation index.

[0078] Specifically, before step S201, leakage detection of each part of the system can also be performed, that is, leakage detection of each part of the system is performed in the first stage. Leakage detection of each part of the system is usually performed by physical means, spraying leakage detection agent at each interface position of the instrument and the pipeline to determine whether the connection is reliable and whether there is obvious leakage.

[0079] However, the second stage executes step S201 to obtain the first pressure difference measured by the differential pressure air tightness tester for the test piece, and the second pressure difference measured again after the differential pressure air tightness tester is connected to the standard leak hole, and the equivalent volume of the test piece and the test pipeline in the air tightness testing system is calibrated based on the first pressure difference and the second pressure difference.

[0080] Specifically, the detector used in this embodiment is a differential pressure air tightness detector, and its principle is simply described as filling high-pressure gas into the test piece and the inside of the standard tank at the same time, and closing the valve. At this time, there is a differential pressure sensor between the test piece and the standard tank, which can detect the pressure difference between the two, usually displayed as leakage. Therefore, it is necessary to convert the pressure difference and leakage through the following formula.

[0081]

[0082] In formula (1), Q is the leakage, Ve is the equivalent volume, △P is the differential pressure, and △T is the detection time, wherein the equivalent volume has a critical influence on the final value. The present invention calibrates the actual volume by the following method, which can greatly improve the test accuracy. Therefore, the first pressure difference obtained by measuring the test piece through the differential pressure airtightness detector and the second pressure difference obtained by connecting the differential pressure airtightness detector to the standard leak hole are obtained, and the equivalent volume of the test piece and the test pipeline in the airtightness detection system is calibrated based on the first pressure difference and the second pressure difference.

[0083] In one embodiment, the method of obtaining a first pressure difference of the test piece measured by a pressure differential airtightness detector, and obtaining a second pressure difference measured again after the pressure differential airtightness detector is connected to a standard leak hole, and calibrating the equivalent volume of the test piece and the test pipeline in the airtightness detection system based on the first pressure difference and the second pressure difference includes:

[0084] Set the to-be-determined equivalent volume of the test piece and the test pipeline as the initial volume value;

[0085] Obtaining one or more first pressure differences obtained by measuring the test piece through a differential pressure air tightness detector that is not connected to a standard leak hole;

[0086] converting one or more of the first pressure differences into a first conversion leakage amount based on the to-be-determined equivalent volume, and calculating an average value of the first conversion leakage amounts as a first leakage amount;

[0087] Obtain one or more second pressure differences measured again after the pressure differential air tightness detector is connected to the standard leak hole, convert the one or more second pressure differences into a second converted leakage amount based on the equivalent volume to be determined, and calculate the average value of the second converted leakage amount as the second leakage amount;

[0088] If the sum of the first leakage and the leakage of the standard leak hole is equal to the second leakage, the equivalent volume of the test piece and the test pipeline is the equivalent volume to be determined; otherwise, after updating the equivalent volume to be determined, the second leakage is calculated again until the sum of the first leakage and the leakage of the standard leak hole is equal to the second leakage.

[0089] Specifically, the equivalent volume to be determined is first set as the initial volume value, and then one or more first pressure differences are obtained by measuring the test piece through a differential pressure airtightness detector that is not connected to a standard leak hole.

[0090] In some embodiments, obtaining one or more first pressure differences measured by a differential pressure airtightness detector that is not connected to a standard leak hole on the test piece includes:

[0091] Obtain multiple first pressure differences of the test piece measured by a differential pressure airtightness tester without a standard leak hole. If the upper and lower deviations of the multiple first pressure differences are less than a preset deviation threshold, execute step 2; otherwise, select another test piece for measurement.

[0092] Then, based on the equivalent volume to be determined, the first pressure difference is converted into a first conversion leakage amount using formula (1). Then, the average value of the first conversion leakage amount is calculated as the first leakage amount.

[0093] Then, one or more second pressure differences are obtained by measuring the differential pressure airtightness detector after connecting it to a standard leak hole, and the standard leak hole has a standard leakage amount.

[0094] Then, based on the equivalent volume to be determined, the second pressure difference is converted into a second conversion leakage amount using formula (1). Then, the average value of the second conversion leakage amount is calculated as the second leakage amount.

[0095] Finally, a comparison is made. If the sum of the first leakage Q1 + the leakage Q2 of the standard leak hole is equal to the second leakage Q3, then the equivalent volume to be determined at this time is the equivalent volume of the test piece and the test pipeline, and the calculation is terminated. Otherwise, after adjusting the equivalent volume to be determined, the second leakage Q3 is calculated again until Q1 + Q2 = Q3. Adjusting the equivalent volume to be determined can be to increase or decrease the equivalent volume to be determined by a preset threshold, such as increasing or decreasing the preset percentage of the initial volume value.

[0096] The sum of the first leakage amount and the leakage amount of the standard leakage hole being equal to the second leakage amount may mean that the difference between the sum of the first leakage amount and the leakage amount of the standard leakage hole and the second leakage amount is within a preset difference range.

[0097] like Figure 3 The flowchart of the equivalent volume calibration method according to the best embodiment of the present invention is shown, which includes:

[0098] Step S301, preliminarily calculating the equivalent volume Ve of the pipeline and the inner cavity of the test piece to be determined as the initial volume value V0, and setting it on the instrument;

[0099] Step S302, select the test piece Ax to measure air tightness N times, N ≥ 25, and obtain multiple first pressure differences. Simply process the test results, if the upper and lower deviations are less than 10%, execute step S303, if greater than 10%, select another test piece for measurement.

[0100] Step S303, based on the equivalent volume Ve to be determined, multiple first pressure differences are converted into leakage amounts using formula (1), and the average value of the leakage amounts is recorded as the first leakage amount Q1;

[0101] Step S304, connecting a standard leak hole to the differential pressure air tightness detector, the leakage amount of the standard leak hole specification is Q2, and connecting it in parallel to the detection pipeline;

[0102] Step S305, measuring the test piece again, based on the equivalent volume Ve to be determined, using formula (1) to convert the measured second pressure value into a leakage amount, and recording it as the second leakage amount Q3, for multiple second pressures, the average value of the converted leakage amounts is recorded as the second leakage amount;

[0103] Step S306, make a judgment, if Q1+Q2 is not equal to Q3, then set the equivalent volume to be determined to Ve=Ve±0.1*V0, and execute step S305 again, where the ± value is determined according to whether the value is greater than or less than. If Q1+Q2=Q3, then the equivalent volume V=Ve of the test piece and the test pipeline, at this time, the volume of the entire test pipeline and the test piece can be calibrated, and the equivalent volume is Ve. Among them, when Q1+Q2 is less than Q3, Ve=Ve+0.1*V0 can be set first, and then step S305 is re-executed, and the second leakage amount is calculated again based on the updated equivalent volume to be determined. If the obtained Q1+Q2 is further away from Q3, Ve=Ve-0.1*V0 is set. By adjusting Ve multiple times, the equivalent volume V=Ve of the test piece and the test pipeline is finally determined when Q1+Q2=Q3.

[0104] This embodiment adaptively adjusts the equivalent volume. Since it is only necessary to connect a standard leak hole to the differential pressure air tightness tester, there is no need to disassemble the entire equipment. The effective volume of the test system, that is, the equivalent volume of the test piece and the test pipeline, can be calibrated quickly and accurately, which can greatly improve the accuracy of the measurement results.

[0105] Afterwards, the third stage is executed, from step S202 to step S204, to verify the effectiveness of the airtightness detection system and verify the bias and stability of the system. Specifically, it includes:

[0106] Execute step S202 to obtain modification test data obtained by testing the modified DUT through the airtightness testing system, and then execute step S203 to obtain first normal test data obtained by testing the normal DUT without modification through the airtightness testing system.

[0107] After obtaining two sets of data, step S204 is executed to verify the effectiveness of the airtightness detection system according to the modified detection data and the first normal detection data.

[0108] Specifically: the system error value of the airtightness detection system is measured and calculated by blocking the inlet; the gauge repeatability capability index Cg value is calculated by testing with conventional products, and finally the repeatability and reproducibility (Gauge Repeatability and Reproducibility, GRR) of the airtightness detection system is calculated using the normal product test value.

[0109] Specifically, there are two types of DUTs: modified DUTs and normal DUTs. Figure 4 The figure shows an air tightness detection system for a modified test piece according to an embodiment of the present invention, comprising a modified test piece 1, a test pipeline 2, a first plugging cylinder 3, a second plugging cylinder 4, a tool 5, a detection instrument 6, a connecting pipeline 7, an air source 8, and an air source pipeline 9. The air tightness detection system for the modified test piece is used to measure the pressure difference, and the modified detection data is calculated based on the calibrated equivalent volume using formula (1).

[0110] The modified DUT 1 comprises a DUT body 11 and a plug 12, wherein a first connection end 13 of the DUT body 11 is connected to the test pipeline 2 via a plugging cylinder 3, and the plug 12 plugs the first connection end 13. The plug 12 is a contoured plug.

[0111] Specifically, the modified test piece 1 is fixed on the tooling 5, and the first connection end 13 and the second connection end 14 of the modified test piece 1 are sealed by the first blocking cylinder 3 and the second blocking cylinder 4 through the cylinder plug, and the first connection end 13 and the second connection end 14 are preferably water nozzles. The center of the first cylinder plug at the first connection end 13 has an air hole, and the center of the second cylinder plug at the second connection end 14 has no air hole, and a contour plug 12 is connected between the first connection end 13 and the first cylinder plug 15. The test pipeline 2 connects the detection instrument 6 and the first connection end 13, and is responsible for filling a certain pressure of gas to test the sealing of the product; the connecting pipeline 7 connects the detection instrument 6 and the gas source 8, and is used to provide the test gas; the gas source pipeline 9 connects the gas source 8 and the first plugging cylinder 3 and the second plugging cylinder 4, and is responsible for the forward and backward movement of the first plugging cylinder 3 and the second plugging cylinder 4, and is used to make the cylinder plugs of the first plugging cylinder 3 and the second plugging cylinder 4 fit the first connection end 13 and the second connection end 14 of the modified test piece 1 to ensure sealing. The first cylinder plug and the second cylinder plug are preferably rubber plugs.

[0112] like Figure 5 The figure shows an air tightness detection system for a normal test piece according to an embodiment of the present invention, comprising a normal test piece 10, a test pipeline 2, a first plugging cylinder 3, a second plugging cylinder 4, a tool 5, a detection instrument 6, a connecting pipeline 7, an air source 8, and an air source pipeline 9. The air tightness detection system for the normal test piece is used to measure the pressure difference, and the normal detection data is calculated based on the calibrated equivalent volume using formula (1).

[0113] Specifically, the normal test piece 10 is fixed on the tooling 5, and the first connection end 101 and the second connection end 102 of the normal test piece 10 are sealed by the first plugging cylinder 3 and the second plugging cylinder 4 through the cylinder plug, and the first connection end 101 and the second connection end 102 are preferably water nozzles. There is an air hole in the center of the first cylinder plug at the first connection end 101, and there is no air hole in the center of the second cylinder plug at the second connection end 102. The test pipeline 2 connects the detection instrument 6 and the first connection end 101, and is responsible for filling a certain pressure of gas to test the sealing of the product; the connecting pipeline 7 connects the detection instrument 6 and the gas source 8, which is used to provide test gas; the gas source pipeline 9 connects the gas source 8 and the first plugging cylinder 3 and the second plugging cylinder 4, and is responsible for the forward and backward movement of the first plugging cylinder 3 and the second plugging cylinder 4, and is used to make the cylinder plugs of the first plugging cylinder 3 and the second plugging cylinder 4 fit the first connection end 101 and the second connection end 102 of the normal test piece to ensure sealing. The first cylinder plug and the second cylinder plug are preferably rubber plugs.

[0114] The aforementioned calibration of the equivalent volume of the test piece and the test pipeline can be performed using an airtightness detection system including a normal test piece.

[0115] This embodiment can quickly and efficiently verify the effectiveness of the airtightness detection system. By adopting a standard leak hole, the effective volume of the test piece and the test loop can be calibrated quickly and effectively without changing the test system. By measuring the system error and correcting the capability index, the accuracy and reliability of the calculation are ensured, which can be used as an acceptance indicator for the entire system, ensuring the accuracy of the test system results.

[0116] In one embodiment, the system validity verification of the airtightness detection system according to the modified detection data and the normal detection data includes:

[0117] Calculating the measuring tool repeatability capability index according to the maximum and minimum differences in the reformed test data and the standard deviation of the first normal test data;

[0118] If the measuring tool repeatability capability index meets the acceptance criteria, second normal test data obtained by testing multiple normal test pieces through the airtightness test system is obtained, and the airtightness test system is verified for system effectiveness based on the second normal test data. Otherwise, the airtightness test system is judged to be unacceptable, and the second normal test data is the leakage value obtained by testing the normal test pieces based on the equivalent volume.

[0119] Specifically, it includes:

[0120] Step 1: The same operator continuously measures the DUT 50 times, with each measurement interval greater than 30 seconds, records 50 sets of measurement values, and calculates the difference between the maximum and minimum values ​​in the data, recorded as T. At this time, the measurement value is displayed to exclude the influence of the DUT, and only the leakage of the test system itself is tested, and the test error range of the system itself can be obtained.

[0121] Step 2: The same operator continuously and normally measures the test piece 50 times, with the interval between each measurement greater than 30 seconds, records 50 sets of measurement values, and calculates the gage repeatability capability index Cg value, including:

[0122] 1. Calculate the arithmetic mean Xbar and standard deviation S of the 50 groups of data in step 2;

[0123] 2. Calculate the Cg value, Cg = 0.2T / 6S, the T value is the maximum and minimum difference measured in step 1, and the acceptance standard is preferably Cg ≥ 1.33.

[0124] This embodiment adopts a modified test piece and utilizes a local contour plugging to replace the water nozzle of the normal test piece, thereby ensuring the consistency of the test conditions, being able to quickly and effectively measure the error of the entire system, and providing a reliable tolerance parameter T for Cg calculation, thereby ensuring the accuracy and reliability of the calculation and providing a clear quantitative conclusion on the system effectiveness verification.

[0125] In one embodiment, the performing system validity verification on the airtightness detection system according to the second normal detection data includes:

[0126] Calculate a repeatability index, a reproducibility index, and a fluctuation index according to the second normal detection data;

[0127] Calculating a repeatability and reproducibility index according to the repeatability index and the reproducibility index;

[0128] Calculating the total variation based on the repeatability index, the reproducibility index, and the fluctuation index;

[0129] The system effectiveness of the airtightness detection system is judged according to the repeatability and reproducibility index and the total variation index.

[0130] Specifically, the same operator measures 10 normal test pieces in rotation for 3 times, with each measurement interval greater than 30 seconds, and obtains 30 sets of data. For the 30 sets of data, execute:

[0131] 1) Calculate the repeatability index EV = (5.15*R^2) / d, where R is the average value of the range and d is the correction factor, which can be obtained by looking up the table (for example, Appendix C of the AIAG MSA manual);

[0132] 2) Calculate the reproducibility index AV = 0; 3) Calculate the repeatability and reproducibility index

[0133] 3) Calculate the fluctuation index PV between the test pieces = Rp*K, where Rp is the extreme value and K is the correction coefficient;

[0134] 4) Calculate the total variation

[0135] 5) Make a judgment and calculate %GRR=GRR / TV. %GRR<10% indicates that the airtightness detection system is good and acceptable. 10%<%GRR<30% indicates that the airtightness detection system needs to be improved. %GRR>30% indicates that the airtightness detection system is unacceptable.

[0136] This embodiment can efficiently verify the effectiveness of the system and ensure the accuracy of the test results by measuring the Cg value and GRR value of the normal DUT and defining the acceptance range.

[0137] Based on the same inventive concept, Figure 6 FIG. 1 is a schematic diagram of a device for verifying the effectiveness of an airtightness detection system according to an embodiment of the present invention, comprising:

[0138] The calibration module 601 is used to calibrate the equivalent volume of the test piece and the test pipeline in the air tightness detection system according to the data of the test piece before and after the tester is connected to the standard leak hole;

[0139] The verification module 602 is used to verify the system validity of the airtightness detection system based on the equivalent volume.

[0140] The present invention calibrates the equivalent volume of the test piece and the test pipeline in the air tightness detection system according to the data of the test piece before and after the test instrument is connected to the standard leak hole, and verifies the system effectiveness of the air tightness detection system based on the equivalent volume. The volume calibration of the present invention only needs to compare the data of the test instrument before and after the standard leak hole is connected to the test instrument, and does not need to disassemble the entire set of equipment of the air tightness detection system. Therefore, the equivalent volume of the test piece and the test pipeline in the air tightness detection system can be calibrated quickly and accurately, thereby greatly improving the accuracy of the measurement results.

[0141] In one embodiment, the detector is a differential pressure air tightness detector, and the equivalent volume of the test piece and the test pipeline in the air tightness detection system is calibrated according to the data of the test piece before and after the test piece is connected to the standard leak hole, including:

[0142] Obtain a first pressure difference obtained by measuring the piece to be tested by a pressure differential air tightness tester, and obtain a second pressure difference obtained by measuring the piece to be tested again after the pressure differential air tightness tester is connected to a standard leak hole. Calibrate the equivalent volume of the piece to be tested and the test pipeline in the air tightness testing system based on the first pressure difference and the second pressure difference. The first pressure difference is the pressure difference between the piece to be tested and the standard tank when the tester is not connected to the standard leak hole, and the second pressure difference is the pressure difference between the piece to be tested and the standard tank when the tester is connected to the standard leak hole.

[0143] In one embodiment, the method of obtaining a first pressure difference of the test piece measured by a pressure differential airtightness detector, and obtaining a second pressure difference measured again after the pressure differential airtightness detector is connected to a standard leak hole, and calibrating the equivalent volume of the test piece and the test pipeline in the airtightness detection system based on the first pressure difference and the second pressure difference includes:

[0144] Set the to-be-determined equivalent volume of the test piece and the test pipeline as the initial volume value;

[0145] Obtaining one or more first pressure differences obtained by measuring the test piece through a differential pressure air tightness detector that is not connected to a standard leak hole;

[0146] converting one or more of the first pressure differences into a first conversion leakage amount based on the to-be-determined equivalent volume, and calculating an average value of the first conversion leakage amounts as a first leakage amount;

[0147] Obtain one or more second pressure differences measured again after the pressure differential air tightness detector is connected to the standard leak hole, convert the one or more second pressure differences into a second converted leakage amount based on the equivalent volume to be determined, and calculate the average value of the second converted leakage amount as the second leakage amount;

[0148] If the sum of the first leakage and the leakage of the standard leak hole is equal to the second leakage, the equivalent volume of the test piece and the test pipeline is the equivalent volume to be determined; otherwise, after updating the equivalent volume to be determined, the second leakage is calculated again until the sum of the first leakage and the leakage of the standard leak hole is equal to the second leakage.

[0149] In one embodiment, the system validity verification of the airtightness detection system based on the equivalent volume includes:

[0150] Acquire modification test data obtained by testing a modified test piece modified from the test piece through the air tightness testing system, wherein the modified test piece is connected to the test pipeline without air holes, and the modification test data is a leakage value obtained by testing the modified test piece based on the equivalent volume;

[0151] Acquire first normal test data obtained by testing a normal DUT that has not been modified through the air tightness testing system, wherein the normal DUT is connected to the test pipeline through an air hole, and the first normal test data is a leakage value obtained by testing the normal DUT based on the equivalent volume;

[0152] The system effectiveness of the airtightness detection system is verified based on the modified detection data and the first normal detection data.

[0153] In one embodiment, the system validity verification of the airtightness detection system according to the modified detection data and the normal detection data includes:

[0154] Calculating the measuring tool repeatability capability index according to the maximum and minimum differences in the reformed test data and the standard deviation of the first normal test data;

[0155] If the measuring tool repeatability capability index meets the acceptance criteria, second normal test data obtained by testing multiple normal test pieces through the airtightness test system is obtained, and the airtightness test system is verified for system effectiveness based on the second normal test data. Otherwise, the airtightness test system is judged to be unacceptable, and the second normal test data is the leakage value obtained by testing the normal test pieces based on the equivalent volume.

[0156] In one embodiment, the performing system validity verification on the airtightness detection system according to the second normal detection data includes:

[0157] Calculate a repeatability index, a reproducibility index, and a fluctuation index according to the second normal detection data;

[0158] Calculating a repeatability and reproducibility index according to the repeatability index and the reproducibility index;

[0159] Calculating the total variation based on the repeatability index, the reproducibility index, and the fluctuation index;

[0160] The system effectiveness of the airtightness detection system is judged according to the repeatability and reproducibility index and the total variation index.

[0161] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0162] like Figure 7 The figure shows a hardware structure diagram of an electronic device of the present invention, including:

[0163] at least one processor 701; and,

[0164] A memory 702 that is communicatively connected to at least one of the processors 701; wherein,

[0165] The memory 702 stores instructions that can be executed by at least one of the processors. The instructions are executed by at least one of the processors so that the at least one processor can execute the validity verification method of the airtightness detection system as described above.

[0166] Figure 7 A processor 701 is taken as an example.

[0167] The electronic device may further include: an input device 703 and a display device 704 .

[0168] The processor 701, the memory 702, the input device 703 and the display device 704 may be connected via a bus or other means, and the figure takes the connection via a bus as an example.

[0169] The memory 702 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as program instructions / modules corresponding to the validity verification method of the airtightness detection system in the embodiment of the present application, for example, Figure 1 , Figure 2 The processor 701 executes various functional applications and data processing by running the non-volatile software programs, instructions and modules stored in the memory 702, that is, the validity verification method of the airtightness detection system in the above embodiment is realized.

[0170] The memory 702 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required by at least one function; the data storage area may store data created according to the use of the validity verification method of the airtightness detection system, etc. In addition, the memory 702 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory 702 may optionally include a memory remotely arranged relative to the processor 701, and these remote memories may be connected to a device for executing the validity verification method of the airtightness detection system via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0171] The input device 703 can receive user clicks and generate signal inputs related to user settings and function control of the effectiveness verification method of the airtightness detection system. The display device 704 can include display devices such as a display screen.

[0172] The one or more modules are stored in the memory 702 , and when executed by the one or more processors 701 , the validity verification method of the airtightness detection system in any of the above method embodiments is executed.

[0173] The present invention calibrates the equivalent volume of the test piece and the test pipeline in the air tightness detection system according to the data of the test piece before and after the test instrument is connected to the standard leak hole, and verifies the system effectiveness of the air tightness detection system based on the equivalent volume. The volume calibration of the present invention only needs to compare the data of the test instrument before and after the standard leak hole is connected to the test instrument, and does not need to disassemble the entire set of equipment of the air tightness detection system. Therefore, the equivalent volume of the test piece and the test pipeline in the air tightness detection system can be calibrated quickly and accurately, thereby greatly improving the accuracy of the measurement results.

[0174] An embodiment of the present invention provides a storage medium, wherein the storage medium stores computer instructions. When a computer executes the computer instructions, the storage medium is used to execute all steps of the validity verification method of the airtightness detection system as described above.

[0175] In the context of the present disclosure, a storage medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or apparatus. The storage medium may be a machine-readable signal medium or a machine-readable storage medium. Alternatively, the storage medium may be a non-temporary computer-readable storage medium, for example, a non-temporary computer-readable storage medium may be a ROM, a random access memory (Random Access Memory, RAM), a compact disc read-only memory (Compact Disc ROM, CD-ROM), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0176] An embodiment of the present invention provides an airtightness detection system, comprising: a workpiece to be tested, a test pipeline, a first blocking cylinder, a second blocking cylinder, a detection instrument, a connecting pipeline, an air source and an air source pipeline, wherein the first blocking cylinder is connected to the first connecting end of the workpiece to be tested via a first cylinder plug with an air hole, and the second blocking cylinder is connected to the second connecting end of the workpiece to be tested via a closed second cylinder plug, the air inlet end of the first blocking cylinder is connected to one end of the test pipeline, and the other end of the test pipeline is connected to the detection instrument, the air inlet end of the first blocking cylinder is connected to the air hole, the air source is connected to the detection instrument via the connecting pipeline, and the air source is respectively connected to the first blocking cylinder and the second blocking cylinder via the air source pipeline, and the effectiveness verification method of the airtightness detection system as described above is executed to verify the effectiveness of the airtightness detection system.

[0177] The DUT may be a modified DUT 1 or a normal DUT 10 .

[0178] like Figure 4The figure shows an air tightness detection system of a modified test piece using an embodiment of the present invention, including a modified test piece 1, a test pipeline 2, a first plugging cylinder 3, a second plugging cylinder 4, a tool 5, a detection instrument 6, a connecting pipeline 7, an air source 8, and an air source pipeline 9. The first plugging cylinder 3 is connected to the first connecting end 13 of the test piece 1 through a first cylinder plug 15 with an air hole, and the second plugging cylinder 4 is connected to the second connecting end 14 of the test piece 1 through a closed second cylinder plug. The air inlet end 31 of the first plugging cylinder 3 is connected to one end of the test pipeline 2, and the other end of the test pipeline 2 is connected to the detection instrument 6. The air inlet end 31 of the first plugging cylinder 3 is connected to the air hole, the air source 8 is connected to the detection instrument 6 through the connecting pipeline 7, and the air source 8 is respectively connected to the first plugging cylinder 3 and the second plugging cylinder 4 through the air source pipeline 9.

[0179] like Figure 5 The figure shows an air tightness detection system of a normal test piece according to an embodiment of the present invention, including a normal test piece 10, a test pipeline 2, a first blocking cylinder 3, a second blocking cylinder 4, a tool 5, a detection instrument 6, a connecting pipeline 7, an air source 8, and an air source pipeline 9. The first blocking cylinder 3 is connected to the first connecting end 101 of the test piece 1 through a first cylinder plug 15 with an air hole, and the second blocking cylinder 4 is connected to the second connecting end 102 of the test piece 1 through a closed second cylinder plug. The air inlet end 31 of the first blocking cylinder 3 is connected to one end of the test pipeline 2, and the other end of the test pipeline 2 is connected to the detection instrument 6. The air inlet end 31 of the first blocking cylinder 3 is connected to the air hole, the air source 8 is connected to the detection instrument 6 through the connecting pipeline 7, and the air source 8 is respectively connected to the first blocking cylinder 3 and the second blocking cylinder 4 through the air source pipeline 9.

[0180] The airtightness detection system of this embodiment executes the aforementioned validity verification method of the airtightness detection system to verify the validity of the airtightness detection system.

[0181] The present invention calibrates the equivalent volume of the test piece and the test pipeline in the air tightness detection system according to the data of the test piece before and after the test instrument is connected to the standard leak hole, and verifies the system effectiveness of the air tightness detection system based on the equivalent volume. The volume calibration of the present invention only needs to compare the data of the test instrument before and after the standard leak hole is connected to the test instrument, and does not need to disassemble the entire set of equipment of the air tightness detection system. Therefore, the equivalent volume of the test piece and the test pipeline in the air tightness detection system can be calibrated quickly and accurately, thereby greatly improving the accuracy of the measurement results.

[0182] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for verifying the effectiveness of an airtightness detection system, wherein the airtightness detection system comprises at least a test piece, a test pipeline and a detector, wherein the test piece is connected to the detector via the test pipeline, characterized in that: Methods include: Calibrate the equivalent volume of the test piece and the test pipeline in the air tightness detection system according to the data of the test piece before and after the tester is connected to the standard leak hole; Based on the equivalent volume, the airtightness detection system is verified for system effectiveness.

2. The method for verifying the effectiveness of an airtightness detection system according to claim 1, characterized in that: The detector is a differential pressure air tightness detector, and the equivalent volume of the test piece and the test pipeline in the air tightness detection system is calibrated according to the data of the test piece before and after the test piece is connected to the standard leak hole, including: Obtain a first pressure difference obtained by measuring the piece to be tested by a pressure differential air tightness tester, and obtain a second pressure difference obtained by measuring the piece to be tested again after the pressure differential air tightness tester is connected to a standard leak hole. Calibrate the equivalent volume of the piece to be tested and the test pipeline in the air tightness testing system based on the first pressure difference and the second pressure difference. The first pressure difference is the pressure difference between the piece to be tested and the standard tank when the tester is not connected to the standard leak hole, and the second pressure difference is the pressure difference between the piece to be tested and the standard tank when the tester is connected to the standard leak hole.

3. The method for verifying the effectiveness of the airtightness detection system according to claim 2, characterized in that: The method of obtaining a first pressure difference of the test piece measured by a pressure differential airtightness detector and obtaining a second pressure difference measured again after the pressure differential airtightness detector is connected to a standard leak hole, and calibrating the equivalent volume of the test piece and the test pipeline in the airtightness detection system based on the first pressure difference and the second pressure difference, includes: Set the to-be-determined equivalent volume of the test piece and the test pipeline as the initial volume value; Obtaining one or more first pressure differences obtained by measuring the test piece through a differential pressure air tightness detector that is not connected to a standard leak hole; converting one or more of the first pressure differences into a first conversion leakage amount based on the to-be-determined equivalent volume, and calculating an average value of the first conversion leakage amounts as a first leakage amount; Obtain one or more second pressure differences measured again after the pressure differential air tightness detector is connected to the standard leak hole, convert the one or more second pressure differences into a second converted leakage amount based on the equivalent volume to be determined, and calculate the average value of the second converted leakage amount as the second leakage amount; If the sum of the first leakage and the leakage of the standard leak hole is equal to the second leakage, the equivalent volume of the test piece and the test pipeline is the equivalent volume to be determined; otherwise, after updating the equivalent volume to be determined, the second leakage is calculated again until the sum of the first leakage and the leakage of the standard leak hole is equal to the second leakage.

4. The method for verifying the effectiveness of an airtightness detection system according to claim 1, characterized in that: The system effectiveness verification of the airtightness detection system based on the equivalent volume includes: Acquire modification test data obtained by testing a modified test piece modified from the test piece through the air tightness testing system, wherein the modified test piece is connected to the test pipeline without air holes, and the modification test data is a leakage value obtained by testing the modified test piece based on the equivalent volume; Acquire first normal test data obtained by testing a normal DUT that has not been modified through the air tightness testing system, wherein the normal DUT is connected to the test pipeline through an air hole, and the first normal test data is a leakage value obtained by testing the normal DUT based on the equivalent volume; The system effectiveness of the airtightness detection system is verified based on the modified detection data and the first normal detection data.

5. The validity verification method of the airtightness detection system according to claim 4 is characterized in that: The method of verifying the effectiveness of the airtightness detection system according to the modified detection data and the normal detection data includes: Calculating the measuring tool repeatability capability index according to the maximum and minimum differences in the reformed test data and the standard deviation of the first normal test data; If the measuring tool repeatability capability index meets the acceptance criteria, second normal test data obtained by testing multiple normal test pieces through the airtightness test system is obtained, and the airtightness test system is verified for system effectiveness based on the second normal test data. Otherwise, the airtightness test system is judged to be unacceptable, and the second normal test data is the leakage value obtained by testing the normal test pieces based on the equivalent volume.

6. The method for verifying the effectiveness of an airtightness detection system according to claim 5, characterized in that: The performing system validity verification on the airtightness detection system according to the second normal detection data includes: Calculate a repeatability index, a reproducibility index, and a fluctuation index according to the second normal detection data; Calculating a repeatability and reproducibility index according to the repeatability index and the reproducibility index; Calculating the total variation based on the repeatability index, the reproducibility index, and the fluctuation index; The system effectiveness of the airtightness detection system is judged according to the repeatability and reproducibility index and the total variation index.

7. A validity verification device for an airtightness detection system, the airtightness detection system comprising at least a test piece, a test pipeline and a detector, the test piece being connected to the detector via the test pipeline, characterized in that: The device includes: A calibration module, used to calibrate the equivalent volume of the test piece and the test pipeline in the air tightness detection system according to the data of the test piece before and after the tester is connected to the standard leak hole; A verification module is used to verify the system effectiveness of the airtightness detection system based on the equivalent volume.

8. An electronic device, characterized in that: include: at least one processor; as well as, a memory communicatively connected to at least one of the processors; wherein, The memory stores instructions executable by at least one of the processors, and the instructions are executed by at least one of the processors so that at least one of the processors can execute the validity verification method of the airtightness detection system as described in any one of claims 1 to 6.

9. A storage medium, characterized in that: The storage medium stores computer instructions, and when a computer executes the computer instructions, it is used to execute all steps of the validity verification method of the airtightness detection system as described in any one of claims 1 to 6.

10. An airtightness detection system, characterized in that: include: A piece to be tested, a test pipeline, a first blocking cylinder, a second blocking cylinder, a detection instrument, a connecting pipeline, an air source and an air source pipeline, the first blocking cylinder is connected to the first connecting end of the piece to be tested through a first cylinder plug with an air hole, the second blocking cylinder is connected to the second connecting end of the piece to be tested through a closed second cylinder plug, the air inlet end of the first blocking cylinder is connected to one end of the test pipeline, the other end of the test pipeline is connected to the detection instrument, the air inlet end of the first blocking cylinder is connected to the air hole, the air source is connected to the detection instrument through the connecting pipeline, and the air source is respectively connected to the first blocking cylinder and the second blocking cylinder through the air source pipeline, and the effectiveness verification method of the air tightness detection system as described in any one of claims 1 to 6 is executed to verify the effectiveness of the air tightness detection system.

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