Related Application

[0001] This application is related to Chinese Utility Model Application Number: 202120367781.3, filed February 8, 2021, the entire disclosure of which is expressly incorporated by reference herein.

[0002] Additionally, the present application is related to Chinese Application No. 202110171163.6, filed February 8, 2021; Chinese Application No.: 202110180594.9, filed February 8, 2021; Chinese Utility Model Application No. 202120363754.9 filed February 8, 2021; Chinese Utility Model Application No.: 202120371838.7 filed February 8, 2021; Chinese Utility Model Application No. 202120371730.8 filed February 8, 2021; and Chinese Patent Application No. 202123270682.2, filed Dec. 23, 2021, the entire disclosures of which are expressly incorporated by reference herein.

Technical Field

[0003] The present application relates to the technical field of air leakage detection of inflatable products, in particular to an air leakage detection structure and a test cover structure for an inflatable product.

Background

[0004] Common inflatable products available on the market, such as inflatable beds, inflatable tables, inflatable boats, and inflatable toys, because of their light weight, foldability, portability, great comfortableness and many other advantages, are immensely popular with consumers and widely applicable, and have become essential for use at home and while traveling, offering excellent market prospects. The airtightness of an inflatable product is a key indicator forjudging the product quality of the inflatable product, and whether the airtightness is excellent directly affects a consumer's experience of using the inflatable product. Therefore, most inflatable products will be tested for airtightness before being put on the market.

[0005] At present, methods for detecting the airtightness of an inflatable product include pressure drop methods and gas detection methods, and the most commonly used gas detection method is the helium detection method. A helium gas detection device in the prior art comprises a test cover and a helium mass spectrometer, wherein the test cover is provided with a detection hole that is connected to the helium mass spectrometer. An inflatable product, after being filled with helium, is placed in a sealed test cover, and if the inflatable product leaks after being left for a period of time, the helium mass spectrometer will detect helium. The helium detection device has, among others, the following problems:

[0006] First, since only one detection hole is provided in the test cover, when the point of leakage is not near the detection hole, it will take a certain amount of time for the helium gas to diffuse to the detection hole. Therefore, the leakage detection requires a relatively long placement time, and so the time cost is high.

[0007] Second, in the prior art, the concentration of helium gas filled in an inflatable product is increased to quickly complete the leakage detection of the inflatable product, so that even if there is a considerable distance between the point of leakage and the detection hole, the helium mass spectrometer can quickly detect the leakage. However, since helium is expensive, increasing the helium concentration will undoubtedly increase the cost of leakage detection.

Summary

[0008] In an exemplary embodiment of the present disclosure, an air leakage detection structure and test cover structure for an inflatable product is provided which reduces the time required for air leakage detection to allow fast air leakage detection.

[0009] In another exemplary embodiment of the present disclosure an air leakage detection structure for an inflatable product is provided. The air leakage detection structure may comprise a test cover; a gas tester; and a control assembly. The test cover may be provided with a space for accommodating the inflatable product. The test cover may be provided with N test areas, and each test area may be provided with more than one detection hole, wherein N > 2. The gas tester may be selectively connected to or disconnected from the detection holes on the N test areas through the control assembly.

[0010] In an example thereof, the control assembly may comprise N detection pipelines and N control valves. The detection holes in each of the test areas may be connected to the gas tester through a respective detection pipeline of the N detection pipelines. Each of the N detection pipeline may be provided with a corresponding one of the N control valves. In a normal state, the N control valves are closed. In a detection state, the N control valves may be opened successively, and only one of the N control valves may be opened at a time.

[0011] In another example thereof, the air leakage detection structure may further comprise an air extraction device that is connected to the detection holes in each test area. [0012] In yet another example thereof, the gas tester may be a gas mass spectrometer. [0013] In a further example thereof, the gas tester may be a helium gas tester or a sulfur hexafluoride tester.

[0014] In yet another exemplary embodiment of the present disclosure, a test cover structure for air leakage detection of an inflatable product is provided. The test cover may be provided with a space for accommodating an inflatable product. The test cover may be provided with N test areas, and each test area may be provided with more than one detection hole, wherein N > 2.

[0015] In an example thereof, a portion of the detection holes are arranged on a side wall of the test cover.

[0016] In a further exemplary embodiment of the present disclosure, a test apparatus for air leakage detection of an inflatable product having a continuous inflatable side wall and a central recessed portion when inflated is provided. The test apparatus may comprise a test cover which may include a continuous outer wall; a continuous inner wall spaced apart from the continuous outer wall; and a top wall coupling the continuous outer wall and the continuous inner wall. The continuous outer wall, the continuous inner wall, and the top wall defining a space to receive the continuous side wall of the inflatable product. The test cover may further include a central recess bounded by the continuous inner wall and adapted to be received in the central recessed portion of the inflatable product when the continuous side wall of the inflatable product is received in the space defined by the continuous outer wall, the continuous inner wall, and the top wall of the test cover. The test cover may further include a plurality of detection holes provided in a portion of the continuous outer wall, the continuous inner wall, and the top wall.

[0017] In an example thereof, the test apparatus may further comprise a plurality of detection pipelines coupled to the plurality of detection holes; and a gas tester operatively coupled to the plurality of detection pipelines to test for gas leaking from the inflatable product received in the space of the test cover defined by the continuous outer wall, the continuous inner wall, and the top wall. In a variation thereof, the test apparatus further comprises a plurality of control valves. Each control valve coupled to a respective one of the plurality of detection pipelines to selectively permit fluid flow from the test cover to the gas tester through the respective detection pipeline. In a further variation thereof, the test cover is provided with N test areas. Each of the N test areas including at least one detection hole coupled to a respective detection pipeline and respective control valve to provide N test sectors of the space defined by the continuous outer wall, the continuous inner wall, and the top wall of the test cover.

[0018] In another example thereof, a first number of the plurality of detection holes are provided in the continuous outer wall of the test cover.

[0019] In yet another example thereof, a second number of the plurality of detection holes are provided in the continuous inner wall of the test cover.

[0020] In still another example thereof, a third number of the plurality of detection holes are provided in the top wall of the test cover.

[0021] In a further example thereof, the continuous inner wall of the test cover is one of circular, elliptical, square, rectangular, hexagonal, and octagonal.

[0022] The disclosed embodiments may provide the following beneficial effects, among others:

[0023] First, since the test cover is divided into a plurality of test areas, a plurality of detection holes are disposed in each test area, and each detection hole is connected to a helium mass spectrometer, irrespective of where an air leakage occurs in the inflatable product, the tester will detect the leakage quickly, so that the air leakage detection takes less time and may be completed quickly.

[0024] Second, N test areas are controlled, by a control assembly, to be connected to a gas tester successively, which allows independent detection in each test area and thus reduces the diffusion range of leaking gas, so that the concentration of helium in the mixed gas filled in the inflatable product under test may be lowered, and thus the cost of leakage detection may be reduced. In embodiments, the lowest helium concentration is around 3% and, indeed, if more test areas are divided on the test cover and each test area is provided with more detection holes, then the concentration of helium in the mixed gas may be even lower. [0025] Third, N test areas are controlled, by a control assembly, to be connected to a gas tester successively, which allows independent detection in each test area, so that the area of air leakage may be accurately located and then the search range for an air leakage hole is narrowed, thereby facilitating subsequent repair of the inflatable product. [0026] Additional features and advantages of the present disclosure will become apparent to those skilled in the art upon consideration of the following detailed description of the illustrative embodiment exemplifying the best mode of carrying out the disclosure as presently perceived.

Brief Description of the Drawings

[0027] The foregoing aspects and many of the intended advantages of this disclosure will become more readily appreciated as the same becomes better understood by reference to the following detailed description when taken in conjunction with the accompanying drawings.

[0028] Fig. 1 is a schematic structural diagram of an exemplary embodiment of an air leakage detection structure of the present disclosure;

[0029] Fig. 2 is a schematic structural diagram of another exemplary embodiment of an air leakage detection structure of the present disclosure;

[0030] Fig. 3 is a first perspective view of a schematic structural diagram of an exemplary test cover of the present disclosure;

[0031] Fig. 4 is a second perspective view of the exemplary test cover of Fig. 3;

[0032] Fig. 5 is a schematic structural diagram of another exemplary test cover of the present disclosure;

[0033] Fig. 6 is a schematic structural diagram of yet another exemplary test cover of the present disclosure;

[0034] Fig. 7 is a schematic structural diagram of a further exemplary test cover of the present disclosure;

[0035] Fig. 8 is a schematic structural diagram of still another exemplary test cover of the present disclosure; and

[0036] Fig. 9 is a schematic structural diagram of yet still another exemplary test cover of the present disclosure.

[0037] Corresponding reference characters indicate corresponding parts throughout the several views. Although the drawings represent embodiments of various features and components according to the present disclosure, the drawings are not necessarily to scale and certain features may be exaggerated in order to better illustrate and explain the present disclosure. The exemplifications set out herein illustrate embodiments of the disclosure, and such exemplifications are not to be construed as limiting the scope of the disclosure in any manner.

Detailed Description

[0038] For the purposes of promoting an understanding of the principals of the disclosure, reference will now be made to the embodiments illustrated in the drawings, which are described below. The embodiments disclosed below are not intended to be exhaustive or limit the disclosure to the precise form disclosed in the following detailed description. Rather, the embodiments are chosen and described so that others skilled in the art may utilize their teachings. It will be understood that no limitation of the scope of the disclosure is thereby intended. The disclosure includes any alterations and further modifications in the illustrative devices and described methods and further applications of the principles of the disclosure which would normally occur to one skilled in the art to which the disclosure relates.

[0039] In the description, it should be noted that the terms upper, lower, inner, outer, top/bottom, etc. indicating the orientation or positional relationship based on the orientation shown in the drawings are only for the convenience of simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. [0040] The terms “couples”, “coupled”, “coupler”, and variations thereof are used to include both arrangements wherein two or more components are in direct physical contact and arrangements wherein the two or more components are not in direct contact with each other (e.g., the components are “coupled” via at least a third component, but yet still cooperates or interact with each other).

[0041] The present disclosure is related to the following applications which are incorporated by reference herein.

[0042] Exemplary methods of testing for air leakage from an inflatable product with test covers are provided in PCT Patent Application No. (unknown), filed same day as the present application, titled A GAS LEAKAGE DETECTION METHOD FORAN INFLATABLE PRODUCT, docket IRC-0144-01 -WO and Chinese Application No.: 202110171163.6, filed February 8, 2021, the entire disclosures of which are expressly incorporated by reference herein. [0043] Exemplary gas leakage testing devices having a plurality of test covers in a test frame, a loading workstation, and unloading workstation and methods of operation are provided in PCT Patent Application No. (unknown), fded same day as the present application, titled GAS LEAKAGE TESTING DEVICE FOR INFLATABLE PRODUCT, docket IRC-0145-01-WO and in Chinese Application No.: 202110180594.9 and Chinese Utility Model Application No.: 202120363754.9 both fded February 8, 2021, the entire disclosures of which are incorporated by reference herein. Additional exemplary gas leakage testing devices are provided in PCT Patent Application No. (unknown), fded same day as the present application, titled FEEDING MECHANISM, FEEDING AND DISCHARGE STRUCTURE FOR PERFORMANCE DETECTION DEVICE FOR INFLATABLE PRODUCT, docket IRC-0149-01 -WO and in Chinese Application No.: 202123270682.2, fded Dec. 23, 2021, the entire disclosures of which are incorporated by reference herein.

[0044] Exemplary test cover replacement structures for swapping out test covers in a gas leakage detection device having at least a test frame and a loading workstation are provided in PCT Patent Application No. (unknown), fded same day as the present application, titled A TEST COVER REPLACEMENT STRUCTURE FOR AN AIR LEAKAGE DETECTION DEVICE OF INFLATABLE PRODUCTS, docket IRC-0146-01- WO and in Chinese Utility Model Application No.: 202120371838.7 fded February 8, 2021, the entire disclosures of which are incorporated by reference herein.

[0045] Exemplary sealing joint structures for sealing a connection between a gas source and an inflatable product for inflation or deflation of the inflatable product are provided in PCT Patent Application No. (unknown), fded same day as the present application, titled A SEALING JOINT STRUCTURE FOR INFLATION AND DEFLATION, docket IRC-0148-01-WO and Chinese Utility Model Application Number: 202120371730.8, fded February 8, 2021, the entire disclosures of which is expressly incorporated by reference herein.

[0046] Referring to Fig. 1, an air leakage detection structure for an inflatable product is shown which comprises atest cover 1, a gas tester 3, and a control assembly 4,5. The test cover 1 is provided with a space for accommodating an inflatable product 2. The test cover 1 is provided with N test areas, and each test area is provided with more than one detection hole, wherein N > 2. The gas tester 3 is selectively connected to or disconnected from the detection holes on each test area through the control assembly 4,5. [0047] The gas tester 3 may be a gas mass spectrometer, and specifically may be a helium mass spectrometer or a sulfur hexafluoride mass spectrometer. In the following embodiments, the helium mass spectrometer 3 is used as the gas tester, but other suitable gas testers may be used.

[0048] In operation, the inflatable product 2 is inflated with a mixed gas containing helium, and then the inflatable product 2, which has inflated, is placed in the space provided by the test cover 1 for air leakage detection. In a detection state, the detection holes of the N test areas are controlled by the control assembly 4,5 to be connected to the helium mass spectrometer 3 successively. The helium mass spectrometer 3 successively collects gas samples in the N test areas for detection, and, if air leakage from any of the test areas is detected, the inflatable product 2 is judged to be a product with air leakage, which needs to be reworked or repaired. Indeed, the helium mass spectrometer 3 can also perform detection on two or more test areas at the same time.

[0049] In embodiments, a control valve 5 is provided on the detection pipeline 4 in each test area, and when the helium mass spectrometer 3 detects a test area, the control valve 5 on the detection pipeline 4 in the test area is opened, while the control valves 5 on the pipelines 4 in the other test areas are closed.

[0050] The test cover 1 is divided into a plurality of test areas. In embodiments, a plurality of detection holes are disposed in each test area, and each detection hole is connected to the helium mass spectrometer 3 through a corresponding detection pipeline 4 and control valve 5. Irrespective of where an air leakage occurs in the inflatable product 2, the helium mass spectrometer 3 can quickly detect the leakage by knowing which test area registered the leak, so that the air leakage detection takes less time and may be completed quickly.

[0051] In a detection state, if the control assembly controls 4,5 the detection holes of the N test areas to be connected to the helium mass spectrometer 3 successively, allowing independent detection on the N test areas, then the search range for an air leakage hole may be narrowed. Therefore, in this embodiment, the control assembly comprises N groups of detection pipelines 4, and the detection holes on each of the test areas are connected to the helium mass spectrometer 3 through one detection pipeline 4. Each detection pipeline 4 is provided with a control valve 5. In a normal state, N control valves 5 are closed. In a detection state, N control valves 5 are opened successively, and only one control valve 5 is opened at a time (unless multiple test areas are to be tested simultaneously). When the helium mass spectrometer 3 performs detection on a certain test area, the control valve 5 corresponding to the test area is opened, while the other control valves 5 are closed. If an air leakage is detected in the test area, a search needs to be conducted only within or near the test area for the air leakage hole, which makes it convenient for maintenance personnel to locate the air leakage hole quickly, facilitating subsequent reworking and repair.

[0052] As shown in Fig. 2, in order to further reduce the time required for air leakage detection, the air leakage detection structure may further comprise an air extraction device 6. The air extraction device 6 is connected to the detection holes in each test area. The arrangement of the air extraction device 6 increases the pressure difference between the inside and outside of the inflatable product 2 in the test cover 1. If there is an air leakage in the inflatable product 2, when the pressure difference between the inside and outside of the inflatable product is significant, the helium gas in the inflatable product 2 can quickly leak from the location of the leakage, and the helium mass spectrometer 3 can also quickly detect whether an air leakage has occurred, which reduces the time required for air leakage detection.

[0053] In the present embodiment, the division of each test area on the test cover 1 is virtual, and there is no separator between test areas. As shown in Fig. 3, the test cover in this embodiment is divided into five test areas (sectors of ring) indicated by dotted lines. Indeed, in actual application, a corresponding separation structure may also be disposed on the test cover 1 to separate test areas to a certain extent, but should not damage the inflatable product 2 under test.

[0054] As shown in Figs. 3-7, the corresponding test cover 1 may be disposed according to the actual shape of the inflatable product 2, which means that the test cover 1 may be disposed as a circle, an ellipse, an octagon, a hexagon, a square, or other suitable shapes. In the embodiment of Figs. 3 and 4, the product under test is an inflatable swimming pool. The top side of the test cover 1 is recessed into the test cover 1 to form a shape in which the recess 11 fits the inflatable swimming pool, so that the side wall of the test cover 1 may keep as close to the inflatable product 2 as possible (the wall of the inflatable pool being received in the ring). Therefore, a detection hole is arranged on the side wall of the test cover 1 (detection holes on the outer side surface of the ring, the inner side surface of the ring, and the top of the ring) and when an air leakage occurs in the inflatable product 2, the helium mass spectrometer 3 connected to the detection hole can quickly detect the leakage. Figs. 5, 6, and 9 show other shapes of test cover 1 having a central recess 11 and corresponding detection holes. As shown in Figs. 7-8, if the inflatable product 2 under test is of another type, the test cover 1 may also be disposed as a circle, a square, etc. without the recess 11. [0055] The air leakage detection structure has the following advantages, among others.

[0056] First, since the test cover 1 is divided into a plurality of test areas, a plurality of detection holes are disposed in each test area, and each detection hole is connected to the helium mass spectrometer 3, irrespective of where an air leakage occurs in the inflatable product 2, the helium mass spectrometer 3 can quickly detect the leakage, so that the air leakage detection takes less time and may be completed quickly.

[0057] Second, N test areas are controlled, by a control assembly, to be connected to the helium mass spectrometer 3 successively, which allows independent detection in each test area and thus reduces the diffusion range of leaking gas, so that the concentration of helium in the mixed gas filled in the inflatable product 2 under test may be lowered, and thus the cost of leakage detection may be reduced. In this embodiment, the lowest helium concentration is around 3% and, indeed, if more test areas are divided on the test cover 1 and each test area is provided with more detection holes, then the concentration of helium in the mixed gas may be even lower.

[0058] Third, N test areas are controlled, by a control assembly, to be connected to the helium mass spectrometer 3 successively, which allows independent detection in each test area, so that the area of air leakage may be accurately located and then the search range for an air leakage hole is narrowed, thereby facilitating subsequent repair of the inflatable product 2. [0059] In embodiments, a test apparatus for air leakage detection of an inflatable product having a continuous inflatable side wall and a central recessed portion when inflated is provided. Example inflatable products having a continuous inflatable side wall and a central recessed portion include swimming pools. The central recessed portion being the portion holding the water when in use. The test apparatus comprising a test cover 3 including a continuous outer wall, a continuous inner wall spaced apart from the continuous outer wall, and a top wall coupling the continuous outer wall and the continuous inner wall. The continuous outer wall, the continuous inner wall, and the top wall defining a space to receive the continuous side wall of the inflatable product. The test cover further includes a central recess bounded by the continuous inner wall and adapted to be received in the central recessed portion of the inflatable product when the continuous side wall of the inflatable product is received in the space defined by the continuous outer wall, the continuous inner wall, and the top wall. Exemplary test covers of this form are illustrated in Figs. 3-6 and 9. The continuous inner wall of the test cover 3 is one of circular (see Figs. 3 and 4), elliptical, square (see Fig. 9), rectangular, hexagonal (see Fig. 6), and octagonal (see Fig. 5). As explained in more detail in PCT Patent Application No. (unknown), fded same day as the present application, titled GAS LEAKAGE TESTING DEVICE FOR INFLATABLE PRODUCT, docket IRC-0145-01-WO and in Chinese Application No.: 202110180594.9 and Chinese Utility Model Application No.: 202120363754.9 both fded February 8, 2021, the entire disclosures of which are incorporated by reference herein, test cover 3 cooperates with a baseplate to form a sealed cavity in which the inflatable product is disposed and tested for air tightness.

[0060] The test cover further includes a plurality of detection holes provided in a portion of the continuous outer wall, the continuous inner wall, and the top wall. In embodiments, each of the continuous outer wall, the continuous inner wall, and the top wall include a number of detection holes. In embodiments, one or more of the continuous outer wall, the continuous inner wall, and the top wall is void of any detection holes.

[0061] The test apparatus may further comprise a plurality of detection pipelines coupled to the plurality of detection holes and a gas tester operatively coupled to the plurality of detection pipelines to test for gas leaking from the inflatable product received in the space of the test cover defined by the continuous outer wall, the continuous inner wall, and the top wall. The test apparatus may further comprise a plurality of control valves. Each control valve coupled to a respective one of the plurality of detection pipelines to selectively permit fluid flow from the test cover to the gas tester through the respective detection pipeline.

[0062] In embodiments, the test cover is provided with N test areas, each of the N test areas including at least one detection hole coupled to a respective detection pipeline and respective control valve to provide N test sectors of the space defined by the continuous outer wall, the continuous inner wall, and the top wall of the test cover. In embodiments, a first number of the plurality of detection holes are provided in the continuous outer wall of the test cover. In embodiments, a second number of the plurality of detection holes are provided in the continuous inner wall of the test cover. In embodiments, a third number of the plurality of detection holes are provided in the top wall of the test cover.

[0063] Examples

[0064] Example 1 : An air leakage detection structure for an inflatable product is provided. The air leakage detection structure comprising: a test cover; a gas tester; and a control assembly. The test cover is provided with a space for accommodating the inflatable product. The test cover is provided with N test areas, and each test area is provided with more than one detection hole, wherein N > 2. The gas tester is selectively connected to or disconnected from the detection holes on the N test areas through the control assembly.

[0065] Example 2: The air leakage detection structure for an inflatable product of Example 1, wherein the control assembly comprises N detection pipelines and N control valves. The detection holes in each of the test areas are connected to the gas tester through a respective detection pipeline of the N detection pipelines. Each of the N detection pipeline is provided with a corresponding one of the N control valves. In a normal state, the N control valves are closed. In a detection state, the N control valves are opened successively, and only one of the N control valves is opened at a time.

[0066] Example 3 : The air leakage detection structure for an inflatable product of Example 1, wherein the air leakage detection structure further comprises an air extraction device that is connected to the detection holes in each test area.

[0067] Example 4: The air leakage detection structure for an inflatable product of Example 1, wherein the gas tester is a gas mass spectrometer.

[0068] Example 5 : The air leakage detection structure for an inflatable product of Example 1, wherein the gas tester is a helium gas tester or a sulfur hexafluoride tester.

[0069] Example 6: A test cover structure for air leakage detection of an inflatable product is provided. The test cover is provided with a space for accommodating an inflatable product. The test cover is provided with N test areas, and each test area is provided with more than one detection hole, wherein N > 2.

[0070] Example 7 : The test cover structure for air leakage detection of an inflatable product of Example 6, wherein a portion of the detection holes are arranged on a side wall of the test cover.

[0071] Example 8: A test apparatus for air leakage detection of an inflatable product having a continuous inflatable side wall and a central recessed portion when inflated is provided. The test apparatus comprising: a test cover including a continuous outer wall; a continuous inner wall spaced apart from the continuous outer wall; and a top wall coupling the continuous outer wall and the continuous inner wall. The continuous outer wall, the continuous inner wall, and the top wall defining a space to receive the continuous side wall of the inflatable product. The test cover further including a central recess bounded by the continuous inner wall and adapted to be received in the central recessed portion of the inflatable product when the continuous side wall of the inflatable product is received in the space defined by the continuous outer wall, the continuous inner wall, and the top wall of the test cover. The test cover further including a plurality of detection holes provided in a portion of the continuous outer wall, the continuous inner wall, and the top wall.

[0072] Example 9: The test apparatus of Example 8, further comprising: a plurality of detection pipelines coupled to the plurality of detection holes; and a gas tester operatively coupled to the plurality of detection pipelines to test for gas leaking from the inflatable product received in the space of the test cover defined by the continuous outer wall, the continuous inner wall, and the top wall.

[0073] Example 10: The test apparatus of Example 9, further comprising: a plurality of control valves, each control valve coupled to a respective one of the plurality of detection pipelines to selectively permit fluid flow from the test cover to the gas tester through the respective detection pipeline.

[0074] Example 11 : The test apparatus of Example 10, wherein the test cover is provided with N test areas. Each of the N test areas including at least one detection hole coupled to a respective detection pipeline and respective control valve to provide N test sectors of the space defined by the continuous outer wall, the continuous inner wall, and the top wall of the test cover.

[0075] Example 12: The test apparatus of any one of Examples 8-11, wherein a first number of the plurality of detection holes are provided in the continuous outer wall of the test cover.

[0076] Example 13: The test apparatus of any one of Examples 8-12, wherein a second number of the plurality of detection holes are provided in the continuous inner wall of the test cover.

[0077] Example 14: The test apparatus of any one of Examples 8-13, wherein a third number of the plurality of detection holes are provided in the top wall of the test cover.

[0078] Example 15: The test apparatus of any one of Examples 8-14, wherein the continuous inner wall of the test cover is one of circular, elliptical, square, rectangular, hexagonal, and octagonal.

[0079] Description of reference numbers in the drawings:

[0080] test cover 1

[0081] recess 11 [0082] inflatable product 2

[0083] helium mass spectrometer 3

[0084] detection pipeline 4

[0085] control valve 5

[0086] air extraction device 6.

[0087] It will be apparent to those skilled in the art that various modifications and variation can be made in the present disclosure without departing from the spirit or scope of the disclosure. Thus, it is intended that the present disclosure cover the modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalents.