Leakage test sealing clamp, equipment and system

Abstract

The utility model discloses a leakage test sealing clamp, equipment and system, and the clamp comprises an installation support which is used for being installed at an opening of a test cavity; the telescopic cylinder assembly comprises a fixed end and a movable end, the fixed end is mounted on the mounting bracket, the movable end penetrates through the mounting bracket so as to extend into the test cavity, and a plug used for plugging an interface of the product to be tested is arranged on the movable end; the mounting bracket is provided with a first sealing structure for sealing the opening of the test cavity, and the plug is provided with a second sealing structure for sealing the interface of the product to be tested. The telescopic cylinder component can be used for controlling the movement of the movable end of the telescopic cylinder component, so that the movement of the plug can be automatically controlled, the interface of a product can be flexibly sealed and plugged, the interface of the product in the sealing cavity and the opening in the sealing cavity can be sealed at the same time, the requirement of different-surface sealing is met, and the production efficiency is improved. The production benefit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of leak testing, in particular to a leak testing sealing fixture, equipment and system. Background Art

[0002] Leak testing equipment is used for the sealing test of products to detect the sealing condition of products. Generally, there are two types of existing leak testing equipment. One is to directly inflate the inside of the product and detect the air pressure leakage to test the sealing performance of the product. The other is to place the product in a sealed cavity, inflate or create a negative pressure inside the cavity, and detect the air pressure or negative pressure inside the cavity to test the sealing performance of the product.

[0003] For products with interfaces that need to be subjected to sealing tests, the first method described above is generally used for sealing tests. For some interface products that cannot directly inflate the inside of the product to detect its sealing performance, it is necessary to first seal the interface of the product and then place it in a sealed cavity for sealing test. In this process, due to the barrier of the sealed cavity, it is impossible to directly seal the interface of the product by using a sealing ring. Therefore, only mechanical sealing (through mechanical structures such as threads and flanges) can be used to seal the interface of the product, and then it is placed in a sealed cavity for sealing test, resulting in a very cumbersome overall process. At the same time, mechanical sealing generally requires manual operation through tooling or standard interfaces to seal the workpiece, making it difficult to mass-produce.

[0004] There are also some leak testing equipment that set openings on the sealed cavity. However, generally, the openings on the sealed cavity and the interfaces of the products cannot be in the same plane at the same time, and it is difficult to use the sealing ring sealing method to simultaneously seal both the openings on the sealed cavity and the interfaces of the products. Therefore, only the sealing ring sealing method can be used to seal either the interface of the product or the opening of the cavity, or the structure of the sealing ring is designed to simultaneously seal the interface of the product and the opening of the cavity, and then the sealing test is carried out. However, this method is also difficult to meet the higher sealing requirements. Summary of the Utility Model

[0005] Embodiments of the utility model provide a leak testing sealing fixture, equipment and system to solve the above or other potential problems in the prior art.

[0006] According to a first aspect of the utility model, a leak testing sealing fixture is provided, including:

[0007] A mounting bracket for mounting at the opening of a test cavity;

[0008] The telescopic cylinder assembly comprises a fixed end and a movable end, wherein the fixed end is mounted on a mounting bracket, the movable end passes through the mounting bracket so as to be able to extend into the test cavity, and the movable end is provided with a plug for sealing an interface of a product to be tested;

[0009] The mounting bracket is provided with a first sealing structure for sealing the opening of the test cavity, and the plug is provided with a second sealing structure for sealing the interface of the product to be tested.

[0010] The mounting bracket of the leakage test sealing fixture of the utility model can be installed on the opening of the test cavity, and the movement of its active end is controlled by the telescopic cylinder assembly to realize automatic control of the movement of the plug, so as to flexibly seal and plug the interface of the product. The mounting bracket is also provided with a first sealing structure, which cooperates with the second sealing structure provided on the plug at the active end of the telescopic cylinder assembly to achieve simultaneous sealing of the interface of the product placed in the sealing cavity and the opening on the sealing cavity, so as to meet the requirements of unequal surface sealing, reduce the time for sealing test of this type of product, improve efficiency, and enable sealing test of this type of product in large quantities, thereby improving production efficiency.

[0011] In some embodiments, a third sealing structure for sealing a connection position between the telescopic cylinder assembly and the mounting bracket is provided between the fixed end and the mounting bracket.

[0012] Therefore, by such an arrangement, the sealing performance of the test cavity can be further improved, ensuring the accuracy of the test result of the leakage test.

[0013] In some embodiments, a fourth sealing structure is provided between the movable end and the mounting bracket for sealing a movable gap between the movable end and the mounting bracket.

[0014] Therefore, by such an arrangement, the sealing performance of the test cavity can be further improved, ensuring the accuracy of the test result of the leakage test.

[0015] In some embodiments, the first sealing structure, the second sealing structure, the third sealing structure, and the fourth sealing structure include elastic sealing members, and in a sealed state, the elastic sealing members are compressed by 10%-15%; and / or,

[0016] The telescopic cylinder assembly is provided with a pressure measuring device for detecting the pressure applied to the second sealing structure.

[0017] Thus, by such arrangement, the sealing effect of each sealing structure can be ensured, while each sealing structure will not be subjected to excessive pressure to reduce its service life. It is also possible to monitor and control the pressure during sealing in real time based on the pressure measuring device.

[0018] In some embodiments, the plug is a water pipe plug, and the water pipe plug includes a mounting seat for mounting a second sealing structure. When sealing the interface, the water pipe plug is wrapped around the outside of the interface, so that the second sealing structure wraps the interface to form a seal.

[0019] Thus, by such an arrangement, it is possible to ensure the sealing performance of a water pipe interface with a relatively large inner diameter tolerance and improve the accuracy of the test results of the leak test.

[0020] In some embodiments, the plug is an electrical connector plug, and an installation groove for mounting a second sealing structure is provided on the outside of the electrical connector plug. When sealing the interface, the electrical connector plug extends into the inside of the interface, so that the second sealing structure abuts against the inside of the interface to form a seal.

[0021] Thus, by such an arrangement, it is possible to utilize the characteristic of a relatively small inner diameter tolerance of the electrical connector interface to seal it from the inside of the interface and improve the accuracy of the test results of the leak test.

[0022] According to a second aspect of the present invention, there is provided a leak test device, comprising:

[0023] A test cavity, internally provided with a test chamber for placing a product to be tested, and an opening communicating the test chamber with the outside is provided on the test cavity;

[0024] The leak test sealing fixture of the above first aspect is detachably mounted at the opening of the test cavity;

[0025] The test cavity is further provided with a pressure interface for inflating or exhausting air.

[0026] The leak test device of the present invention can quickly meet the sealing requirements when the product is to be tested, and can achieve full automation, so as to be able to perform sealing tests on this type of product in large quantities, thereby improving production efficiency.

[0027] In some embodiments, the telescopic cylinder assembly includes a first telescopic cylinder assembly provided with an electrical connector plug and a second telescopic cylinder assembly provided with a water pipe plug, and the first telescopic cylinder assembly and the second telescopic cylinder assembly are respectively arranged on different sides of the test cavity.

[0028] Thus, by such an arrangement, it is possible to perform leak tests on products to be tested with different types of interfaces and improve the application range of the leak test device.

[0029] According to a third aspect of the present invention, there is provided a leak test system, comprising:

[0030] A cabinet;

[0031] The leak testing device of the second aspect described above is arranged on the cabinet;

[0032] The cabinet is provided with an air source module, and the air source module is connected to the air pressure interface.

[0033] The leak testing system of the present utility model can quickly meet the sealing requirements when the product is to be tested, can automatically seal the interface of the product and the opening of the test cavity, and can also perform leak testing fully automatically by controlling the air source module, and can perform sealing tests on this type of product in large quantities, thereby improving production efficiency.

[0034] In some embodiments, the telescopic cylinder assembly of the leak testing device is a cylinder, and the air source module is also connected to the telescopic cylinder assembly;

[0035] The cabinet includes an upper cabinet and a lower cabinet. A guide rail is arranged on the top surface of the lower cabinet, and a mounting plate is arranged on the guide rail. The base of the test cavity is arranged on the mounting plate. A lifting assembly is also arranged on the top surface of the lower cabinet, and the top cover of the test cavity is arranged on the lifting assembly;

[0036] A display panel and operation buttons are arranged on the upper cabinet. The operation buttons are set to control at least one of the movement of the guide rail, the movement of the lifting assembly, and the start and stop of leak testing.

[0037] Thus, by such an arrangement, it is also possible to simultaneously control the sealing of the interface of the product and the opening of the test cavity through the air source module, realize sealing tests on this type of product in large quantities, and improve production efficiency. Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] Figure 1 It is a schematic diagram of the overall installation state of the leak testing sealing fixture according to an embodiment of the present utility model;

[0040] Figure 2 It is a schematic diagram of the overall structure of the leak testing device according to an embodiment of the present utility model with a product to be tested installed;

[0041] Figure 3 It is a schematic diagram of the overall structure of the leak testing device according to an embodiment of the present utility model with the top cover covered;

[0042] Figure 4Schematic diagram of the internal structure of a leakage test sealing fixture for sealing an electrical connector interface according to an embodiment of the present utility model;

[0043] Figure 5 Schematic diagram of the internal structure of a leakage test sealing fixture for sealing a water pipe interface according to an embodiment of the present utility model;

[0044] Figure 6 Schematic diagram of the overall structure of a leakage test system according to an embodiment of the present utility model;

[0045] Figure 7 Schematic diagram of the internal structure of a leakage test system according to an embodiment of the present utility model;

[0046] Figure 8 is Figure 7 Schematic diagram of the structure of another perspective of the leakage test system of;

[0047] Explanation of reference numerals: 1. Test cavity; 11. Opening; 12. Test chamber; 13. Air pressure interface; 14. Positioning post; 15. Product to be tested; 16. Base; 17. Top cover; 2. Mounting bracket; 21. First sealing structure; 22. Second sealing structure; 221. Coating structure; 222. Inner head; 23. Third sealing structure; 24. Fourth sealing structure; 3. Telescopic cylinder assembly; 31. Fixed end; 32. Movable end; 33. Plug; 331. Electrical connector plug; 332. Water pipe plug; 34. First telescopic cylinder assembly; 35. Second telescopic cylinder assembly; 4. Cabinet; 41. Upper cabinet; 42. Lower cabinet; 43. Operating table; 44. Guide rail; 45. Lifting assembly; 46. Display panel; 47. Operating button; 48. Mounting plate; 49. Mounting table. Detailed implementation manners

[0048] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0049] In the description of the present application, it should be understood that if terms such as "center", "middle part", "longitudinal direction", "transverse direction", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Features defined as "first" and "second" are used to distinguish feature names and do not have special meanings. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0050] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0051] It should also be noted that in this text, the terms "include" and "comprise" not only include those elements, but also include other elements that are not explicitly listed, or also include elements inherent to such a process, method, article, or device. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of other identical elements in the process, method, article, or device including the said elements. The terms used in this text are generally the commonly used terms in the art. If they are inconsistent with the commonly used terms, the terms in this text shall prevail.

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0053] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0054] Figure 1 Schematically shows the overall structure of the leakage test sealing fixture of the present utility model. Among them, the leakage test sealing fixture is used to be installed on a leakage test device, which can be a commonly used leakage test device in the prior art on the market. Refer to Figure 4 and Figure 5 As shown, the leakage test sealing fixture of the present utility model includes a mounting bracket 2 and a telescopic cylinder assembly 3. The mounting bracket 2 is a structure for mounting the telescopic cylinder assembly 3, and it is mounted at the opening 11 of the test cavity 1 of the leakage test device. Among them, the mounting bracket 2 can be mounted on the outside of the opening 11 of the test cavity 1, or can be mounted on the inside of the opening 11 of the test cavity 1. At the same time, the structure of the mounting bracket 2 can also be adaptively adjusted according to the structure of the test cavity 1 and its opening 11, as well as the specific structure of the telescopic cylinder assembly 3. In the present utility model, the structure of the mounting bracket 2 is not limited, as long as its function is satisfied. The installation between the mounting bracket 2 and the test cavity 1 can be designed as a detachable connection method. Compared with fixed connection methods such as welding, this method can improve the recyclability of the leakage test sealing fixture of the present utility model. The telescopic cylinder assembly 3 includes a fixed end 31 and a movable end 32. The fixed end 31 is mounted on the mounting bracket 2, and the movable end 32 is slidably arranged on the fixed end 31 along the length direction of the fixed end 31, so that the movable end 32 can slide relative to the mounting bracket 2 to achieve reciprocating motion. A plug 33 for blocking the interface of the product 15 to be tested is provided on the movable end 32, and the movable end 32 can extend into the test cavity 1 to block the interface of the product 15 to be tested by using the plug 33. Among them, the telescopic cylinder assembly 3 can be a commonly used telescopic cylinder structure in the prior art, such as a pneumatic cylinder or a hydraulic cylinder. Furthermore, the telescopic cylinder assembly 3 can be controlled by air pressure or hydraulic pressure to extend and retract the movable end 32, so as to be able to penetrate into the test cavity 1 and use the plug 33 to block the interface of the device to be tested.

[0055] The mounting bracket 2 is provided with a first sealing structure 21 for sealing the opening 11 of the test cavity 1, so as to be able to seal the opening 11 of the test cavity 1. At the same time, the plug 33 is also provided with a second sealing structure 22 for sealing the interface of the device to be tested, so as to be able to ensure the sealing of the interface of the test product 15. The first sealing structure 21 and the second sealing structure 22 may specifically include elastic seals. For example, the sealing structure for surface sealing of the first sealing structure 21 can be designed as a rubber sealing ring, etc. Thus, by squeezing the elastic seal, it can be compressed and deformed to form a sealing effect. For the sealing structure of the second sealing structure 22 for movably plugging the interface to form a non-planar seal, different sealing structures can be designed with elastic sealing materials such as rubber according to different interfaces. For example, it can be designed as a structure covering the outside of the interface to cover the interface to form a seal, or designed as a structure extending into the inside of the interface to abut against the inside of the interface to form a seal, etc. Among them, in some possible implementation manners, the thickness of the elastic seal and the pressure applied by the telescopic cylinder assembly 3 when driving the second sealing structure 22 to plug the interface can be designed so that after the elastic seal is installed and in the sealed state, its compression amount is 10%-15%, so as to be able to ensure a good overall sealing effect and not cause the elastic seal to be under excessive pressure, thereby reducing its service life. At the same time, since the second sealing structure 22 is arranged to control its compression degree during sealing by the telescopic cylinder assembly 3, the compression degree of the second sealing structure 22 can be dynamically adjusted by dynamically adjusting the driving pressure of the telescopic cylinder assembly 3 to ensure the sealing performance of the second sealing structure 22 for the interface during the sealing test. For the adjustment of the compression degree of the second sealing structure 22, in some other possible implementation manners, a pressure measuring device for detecting the pressure applied by the telescopic cylinder assembly 3 when driving the second sealing structure 22 to plug the interface can be additionally provided on the telescopic cylinder assembly 3. For example, a pressure sensor can be provided on the telescopic cylinder assembly 3. Thus, by detecting the pressure applied by the telescopic cylinder assembly 3, it can be avoided that the pressure applied by the telescopic cylinder assembly 3 is too large, causing the second sealing structure 22 to be overcompressed and affecting the service life of the second sealing structure 22.

[0056] Exemplarily, with reference to Figure 4 and Figure 5 shown, in Figure 4 and Figure 5In the illustrated embodiment, the mounting bracket 2 is disposed outside the opening 11 of the test cavity 1 and is detachably mounted on the test cavity 1 by bolts. Among them, one end of the mounting bracket 2 away from the test cavity 1 is provided with a structure for mounting the fixed end 31 of the telescopic cylinder assembly 3, so that the fixed end 31 of the telescopic cylinder assembly 3 can be detachably mounted on the mounting bracket 2 by means of bolts or the like; the other end is provided with a cubic structure and completely covers the opening 11 of the test cavity 1. The first sealing structure 21 is a rubber sealing ring and is disposed on the mounting surface of the mounting bracket 2 for mounting on the test cavity 1 (i.e., the mounting surface between the mounting bracket 2 and the test cavity 1), thereby realizing the sealing of the opening 11 of the test cavity 1. The fixed end 31 of the telescopic cylinder assembly 3 is fixedly mounted on one end of the mounting bracket 2 away from the test cavity 1 by bolts, and its movable end 32 passes through the mounting bracket 2 through the opening 11 and extends into the test cavity 1. A plug 33 is provided at its end, and a second sealing structure 22 is provided on the plug 33, thereby realizing the sealing of the interface.

[0057] Continuing to refer to Figure 4 and Figure 5 As shown, for different interfaces, the structural design of the plug 33 is different. Specifically, in this embodiment, the interface includes an electrical connector interface and a water pipe interface, and thus the plug 33 includes an electrical connector plug 331 and a water pipe plug 332. The water pipe plug 332 includes a covering structure 221 for covering the outside of the water pipe interface. The covering structure 221 is integrally made of rubber material and thus has elasticity. The inner side surface shape of the covering structure 221 is correspondingly arranged with the water pipe interface to realize the covering and sealing of the water pipe interface. As Figure 5 shown, the end of the water pipe interface is in a frustum shape, and thus the inner side of the covering structure 221 of the water pipe plug 332 is designed in a groove shape adapted to the end of the water pipe interface. The electrical connector plug 331 also includes a covering structure 221, but the covering structure 221 is not directly made of rubber material. As Figure 4 shown, an inner head 222 for extending into the inside of the electrical connector interface is convexly provided on the inner side of the covering structure 221, and a rubber sealing ring is provided on the outer side surface of the inner head 222, so that the rubber sealing ring can abut against the inside of the electrical connector interface to form a seal. The covering structure 221 of the water pipe plug 332 and the rubber sealing ring of the electrical connector plug 331 can both be designed to have a compression amount of 10%-15% in the sealed state, so as to effectively ensure the overall sealing effect.

[0058] In some possible implementations, in order to further improve the sealing performance of the test chamber 1, a third sealing structure 23 for sealing the connection position between the fixed end 31 of the telescopic cylinder assembly 3 and the mounting bracket 2 may be provided. In addition, a fourth sealing structure 24 for sealing the connection position between the movable end 32 of the telescopic cylinder assembly 3 and the mounting bracket 2 may also be provided. Figure 5 As shown, the third sealing structure 23 can be configured as a surface seal, and the sealing is achieved by arranging a rubber sealing ring on a surface of the fixed end 31 of the telescopic cylinder assembly 3 for connecting with the mounting bracket 2, while the fourth sealing structure 24 can be sealed by arranging a rubber sealing ring on the inner side wall of the channel on the mounting bracket 2 for the rod body of the movable end 32 of the telescopic cylinder assembly 3 to move. Similarly, the rubber sealing rings of the third sealing structure 23 and the fourth sealing structure 24 can also be configured to have a compression amount of 10%-15% in the sealed state, so as to effectively ensure the overall sealing effect.

[0059] The mounting bracket 2 of the leakage test sealing fixture of the utility model can be installed on the opening 11 of the test cavity 1, and the telescopic cylinder assembly 3 is used to control the movement of its active end 32 to realize automatic control of the movement of the plug 33, so as to flexibly seal and plug the interface of the product. The mounting bracket 2 is also provided with a first sealing structure 21, which cooperates with the second sealing structure 22 provided on the plug 33 of the active end 32 of the telescopic cylinder assembly 3, so as to realize simultaneous sealing of the interface of the product placed in the sealing cavity and the opening 11 on the sealing cavity, so as to meet the requirements of unequal surface sealing, reduce the time for sealing test of this type of product, improve efficiency, and enable sealing test of this type of product in large quantities, thereby improving production efficiency.

[0060] Figures 1 to 3 The overall structure of the leakage testing device according to one embodiment of the present invention is schematically shown. Figure 1 and Figure 2 As shown, the leakage test equipment of the utility model includes a test cavity 1 and a leakage test sealing fixture of any one of the above-mentioned embodiments. Among them, a test cavity 12 for placing a product to be tested 15 is provided inside the test cavity 1, and an opening 11 for connecting the test cavity 12 with the outside is also provided on the test cavity 1, and the position of the opening 11 is set at a position on the test cavity 12 corresponding to the interface of the product to be tested 15. The mounting bracket 2 of the leakage test sealing fixture is installed at the opening 11 of the test cavity 1 to achieve sealing of the test cavity 1 and the product to be tested 15. The test cavity 1 is also provided with an air pressure interface 13 for inflation or exhaustion, and the air pressure interface 13 is connected to the test cavity 12, so that a leakage test can be performed on the product to be tested 15.

[0061] Specifically, referring to Figure 2 and Figure 3 As shown, the test cavity 1 can be set into two parts, including a base 16 and a top cover 17. The test chamber 12 is arranged inside the base 16, and the shape of the test chamber 12 matches the shape of the product 15 to be tested, so that the product 15 to be tested placed in the test chamber 12 can be positioned. A positioning post 14 corresponding to the opening on the product 15 to be tested can also be arranged in the test chamber 12 of the base 16, so that the product 15 to be tested placed in the test chamber 12 can be better positioned. After the product 15 to be tested is placed in the test chamber 12, the top cover 17 is sealed, and the product 15 to be tested is sealed by using a leak test sealing fixture, and then the leak test of the product 15 to be tested can be realized by inflating or pumping air through the air pressure interface 13. In addition, in some possible implementation manners, the product 15 to be tested may have both an electrical connector interface and a water pipe interface at the same time. At this time, the plug 33 on the telescopic cylinder assembly 3 of the leak test sealing fixture installed can be replaced and adjusted according to the different interfaces of the product 15 corresponding to the opening 11. Exemplarily, referring to Figure 2 and Figure 3 As shown, in this embodiment, the telescopic cylinder assembly 3 adopted includes a first telescopic cylinder assembly 34 provided with an electrical connector plug 331 and a second telescopic cylinder assembly 35 provided with a water pipe plug 332. There are eight groups of leak test sealing fixtures corresponding to the first telescopic cylinder assembly 34, and they are arranged on the side of the test cavity 1 located at Figure 2 As shown in the upper side, there are two groups of leak test sealing fixtures corresponding to the second telescopic cylinder assembly 35, and they are arranged on the side of the test cavity 1 located at Figure 2 As shown on the right side, so that in this test cavity 1, the first telescopic cylinder assembly 34 and the second telescopic cylinder assembly 35 are respectively arranged on different sides of the test cavity 1 according to the interface positions of the product 15 to be tested. Among them, multiple groups of joints can be arranged on the fixed end 31 of each telescopic cylinder assembly 3. These joints can include a pressure application joint for applying pressure inside the telescopic cylinder assembly 3 to enable the second sealing structure 22 to block the interface of the product. For example, when the telescopic cylinder assembly 3 is set as a pneumatic cylinder, the pressure application joint can be an inflation joint for inflating the telescopic cylinder assembly 3, or when the telescopic cylinder assembly 3 is set as a hydraulic cylinder, the pressure application joint can be a hydraulic joint for pushing liquid into the telescopic cylinder assembly 3, etc. These joints can also include a pressure detection joint for connecting a pressure measuring device for detecting the internal pressure of the telescopic cylinder assembly 3, so as to be able to monitor the pressure inside the telescopic cylinder assembly 3 in real time by connecting a pressure sensor and avoid excessive applied pressure. The set numbers of the first telescopic cylinder assembly 34 and the second telescopic cylinder assembly 35, as well as the structure and size of the second sealing structure 22 at their ends, can be designed according to the different structures of the product 15 to be tested specifically to be tested, such as Figure 2As shown, the eight sets of first telescopic cylinder assemblies 34 are provided with a plurality of different structures and sizes of the second sealing structures 22 according to the different interface structures of the tested products 15 to be sealed.

[0062] The leakage testing equipment of the present invention is equipped with the leakage testing sealing fixture of the above-mentioned embodiment, so that it can better meet the sealing requirements of different types (such as eccentric sealing), can quickly meet the sealing requirements of the product when it is to be tested, and can be fully automated, which is convenient for realizing large-scale sealing testing of this type of products, thereby improving production efficiency.

[0063] Figures 6 to 8 The leakage testing system of one embodiment of the utility model is schematically shown. Figure 6 and Figure 7 As shown, the leakage test system of the present invention includes a cabinet 4 and a leakage test device of any one of the above-mentioned embodiments. Specifically, the cabinet 4 includes an upper cabinet 41 and a lower cabinet 42, and the leakage test device is installed and arranged on the top surface of the lower cabinet 42. A guide rail 44 is arranged on the top surface of the lower cabinet 42, and a mounting plate 48 is arranged on the guide rail 44. The base 16 of the test cavity 1 is arranged on the mounting plate 48, so that the movement of the base 16 of the test cavity 1 can be controlled by the guide rail 44, which is convenient for the staff or the clamping equipment such as the manipulator to place the product 15 to be tested into the test cavity 1. Refer to Figure 7 As shown, in Figure 7 In the illustrated embodiment, the four corners of the mounting plate 48 are provided with limited angles so that the base 16 of the leakage test device can be adaptively mounted on the mounting plate 48, and two mounting plates 48 can be arranged in parallel, so that two sets of leakage test devices can be arranged on the lower cabinet 42. Figure 8 As shown, a lifting assembly 45 is also arranged on the top surface of the lower cabinet 42, and the top cover 17 of the test cavity 1 is arranged on the lifting assembly 45, so that the top cover 17 can be stably and tightly covered on the base 16 by the lifting assembly 45. A mounting platform 49 for mounting the lifting assembly 45 is also arranged on the top surface of the lower cabinet 42, and the number and position of the lifting assembly 45 can correspond to the number and position of the base 16 of the leakage test equipment, so that two groups of lifting assemblies 45 are arranged on the mounting platform 49. An operating table 43 is arranged on one side of the upper cabinet 41, and a display panel 46 and an operation button 47 can be arranged on one side of the upper cabinet 41, so that the staff or the manipulator clamp can put the product to be tested 15 into the test cavity 1 from the operating table 43, and control the movement of the guide rail 44 and the lifting assembly 45 based on the display panel 46 and the operation button 47, control the start and stop of the leakage test, and can also observe various data of the current leakage test based on the operating table 43 and the display panel 46.

[0064] The cabinet 4 is also provided with the modules required for the leakage test equipment to complete the leakage test, such as the air source module, which can be specifically arranged in the lower cabinet 42 and connected to the air pressure interface 13, so that the test cavity 1 can be inflated and evacuated through the air pressure interface 13 to perform the leakage test on the product 15 to be tested. In addition, the telescopic cylinder assembly 3 used in the leakage test equipment can be set as a cylinder, so that the air source module can also be connected to the telescopic cylinder assembly 3 and used to control the operation of the telescopic cylinder assembly 3 at the same time, simplifying the complexity of the overall leakage test system.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A leak test sealing fixture, characterized in that: include: A mounting bracket, used for mounting to the opening of the test chamber; The telescopic cylinder assembly comprises a fixed end and a movable end, wherein the fixed end is mounted on a mounting bracket, the movable end passes through the mounting bracket so as to be able to extend into the test cavity, and the movable end is provided with a plug for sealing an interface of a product to be tested; The mounting bracket is provided with a first sealing structure for sealing the opening of the test cavity, and the plug is provided with a second sealing structure for sealing the interface of the product to be tested.

2. The leak test sealing fixture according to claim 1, characterized in that: A third sealing structure for sealing a connection position between the telescopic cylinder assembly and the mounting bracket is provided between the fixed end and the mounting bracket.

3. The leak test sealing fixture according to claim 1, characterized in that: A fourth sealing structure is provided between the movable end and the mounting bracket for sealing a movable gap between the movable end and the mounting bracket.

4. The leak test sealing fixture according to any one of claims 1 to 3, characterized in that: The first sealing structure and the second sealing structure include elastic sealing members, and in the sealed state, the elastic sealing members are compressed by 10%-15%; and / or, The telescopic cylinder assembly is provided with a pressure measuring device for detecting the pressure applied to the second sealing structure.

5. The leak test sealing fixture according to claim 1, characterized in that: The plug is a water pipe plug, which includes a mounting seat for mounting a second sealing structure. When sealing the interface, the water pipe plug is wrapped around the outside of the interface so that the second sealing structure wraps around the interface to form a seal.

6. The leak test sealing fixture according to claim 1, characterized in that: The plug is an electrical connector plug, and an installation groove for installing a second sealing structure is provided on the outer side of the electrical connector plug. When sealing the interface, the electrical connector plug extends into the inner side of the interface so that the second sealing structure abuts against the inner side of the interface to form a seal.

7. A leakage testing device, characterized in that: include: A test cavity body, wherein a test cavity is provided inside for placing the product to be tested, and an opening is provided on the test cavity body for connecting the test cavity with the outside; The leak test sealing fixture according to any one of claims 1 to 6, which is detachably mounted at the opening of the test cavity; The test cavity is also provided with a gas pressure interface for inflating or exhausting gas.

8. The leak testing device according to claim 7, characterized in that The telescopic cylinder assembly comprises a first telescopic cylinder assembly provided with an electrical connector plug and a second telescopic cylinder assembly provided with a water pipe plug, and the first telescopic cylinder assembly and the second telescopic cylinder assembly are respectively arranged on different sides of the test cavity.

9. A leakage testing system, characterized in that: include: Cabinets; The leakage testing device according to claim 7 or 8, arranged on a cabinet; The cabinet is provided with an air source module, and the air source module is connected to the air pressure interface.

10. The leak testing system according to claim 9, characterized in that: The telescopic cylinder assembly of the leakage testing equipment is a gas cylinder, and the gas source module is also connected to the telescopic cylinder assembly; The cabinet comprises an upper cabinet and a lower cabinet, a guide rail is arranged on the top surface of the lower cabinet, a mounting plate is arranged on the guide rail, a base of the test cavity is arranged on the mounting plate, a lifting assembly is also arranged on the top surface of the lower cabinet, and a top cover of the test cavity is arranged on the upgrading assembly; The upper cabinet is provided with a display panel and operation buttons, and the operation buttons are configured to control at least one of the movement of the guide rail, the movement of the lifting component, and the start and stop of the leakage test.

Images