CN217765374U - Air tightness detection auxiliary tool and detection system - Google Patents

Abstract

The utility model provides an auxiliary tool and a detection system for air tightness detection, which comprises a first plug component, a second plug component and a third plug component, wherein the first plug component comprises a first sealing ring, a first driving piece and a first air inlet; the first sealing ring is used for being matched with an air inlet of an engine; the first driving piece is used for driving the first sealing ring to be close to the air inlet so as to realize the sealing of the air inlet; the first air inlet hole is used for being communicated with an internal cavity of the engine; the second plug assembly comprises a second sealing ring and a second driving piece; the second sealing ring is used for being matched with an air outlet of the engine; the second driving piece is used for driving the second sealing ring to be close to the gas outlet, so that the gas outlet is sealed, the effectiveness of gas tightness detection of the automobile engine can be effectively guaranteed through structural design, and the detection effect is guaranteed.

Description

Air tightness detection auxiliary tool and detection system

Technical Field

The utility model relates to an air tightness detects technical field, particularly, relates to an air tightness detects auxiliary fixtures and detecting system.

Background

The automobile engine is used as a main power part of an automobile, and the quality of the engine directly influences the quality of the automobile, so that the air tightness of the engine is usually detected in the production process of the engine, and the air tightness detection mainly detects whether sand holes exist in a box body or not and whether oil leakage exists or not, so that the quality of the engine is ensured.

At present, how to realize effective sealing of an air inlet and an air outlet of an engine in the air tightness detection process is a problem to be solved urgently.

In view of this, the present application is specifically made.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides an auxiliary tool for air tightness detection through the structural design, on the first hand, the effectiveness of air tightness detection of an automobile engine can be effectively ensured through the structural design, and the detection effect is ensured; in a second aspect, an air tightness detection system is provided, which can realize detection of engines with different specifications, and improve applicability.

The utility model discloses a following technical scheme realizes:

first aspect

The embodiment of the utility model provides an air tightness detection auxiliary tool, which comprises a first plug assembly, a second plug assembly and a third plug assembly, wherein the first plug assembly comprises a first sealing ring, a first driving piece and a first air inlet; the first sealing ring is used for being matched with an air inlet of an engine; the first driving piece is used for driving the first sealing ring to be close to the air inlet so as to realize the sealing of the air inlet; the first air inlet hole is used for being communicated with an internal cavity of the engine; the second plug assembly comprises a second sealing ring and a second driving piece; the second sealing ring is used for being matched with an air outlet of the engine; the second driving piece is used for driving the second sealing ring to be close to the air outlet, and sealing of the air outlet is achieved.

In this scheme, this auxiliary fixtures is including being used for realizing the first end cap subassembly and the second end cap subassembly of engine air inlet and gas outlet shutoff respectively, form confined detection environment in the inner chamber of engine through two end cap subassemblies, thereby accomplish the gas tightness detection of engine, when this auxiliary fixtures uses, it is sealed to realize the air inlet through first sealing washer of first driving piece drive, it realizes the sealed of gas outlet to realize through second driving piece drive second sealing washer, after sealed the completion, ventilate to the engine through first inlet port, thereby realize the gas tightness detection of engine, through the structural design to auxiliary fixtures, adopt the driving of driving piece realization sealing washer, when specifically using, the stroke of accessible control driving piece realizes mutually supporting of sealing washer and engine, and through the control of driving piece relative position, guarantee the cooperation intensity of sealing washer and engine, guarantee the validity of leakproofness, thereby guarantee the validity of engine gas tightness detection, guarantee detection effect.

Further, first end cap subassembly still includes the casing, the casing has the inner chamber, first driving piece with the inner chamber sliding fit of casing, the one end of inner chamber is used for mutually supporting with the air inlet of engine, the other end of inner chamber is provided with the limiting plate, the limiting plate is provided with first through-hole, the lateral wall of first through-hole is provided with the internal thread, first driving piece be provided with the external screw thread of first through-hole looks adaptation, through the structural design of casing can effectual realization the life is guaranteed in the assurance of first sealing washer, just the one end of shell is provided with the limiting plate, through the structural design to limiting plate and first driving piece, can effectually realize the sealed of engine air inlet, and adopt screw-thread fit, can realize the maintenance of encapsulated situation.

Furthermore, the first plug assembly further comprises a first plug seat, the first plug seat is in sliding fit with the inner cavity, one end of the first plug seat along the axial direction of the inner cavity is connected with the first driving part, and the other end of the first plug seat is connected with the first sealing ring; the first air inlet hole is formed in the first plug seat, one end of the first air inlet hole is located on the side wall of the first plug seat, and the other end of the first air inlet hole is located on the end face, connected with the first sealing ring, of the first plug seat.

Furthermore, first end cap seat be used for with the link that first driving piece is connected is provided with the spread groove, first driving piece be provided with be used for with spread groove complex connector, the connector with spread groove rotatable coupling through the setting of relation of connection, can effectually avoid when first driving piece rotates, right first end cap seat causes the influence to eat, thereby changes the relative position of first inlet port influences the use.

Further, the lateral wall of casing still is provided with and is used for realizing the inner chamber with the opening of the space intercommunication of inner chamber axis one side, the opening includes the edge first opening and the second opening that inner chamber axis direction set up in order, first opening for the second opening is close to the limiting plate, first opening with the central angle that the sector area that the inner chamber axis formed corresponds is greater than the second opening with the central angle that the sector area that the inner chamber axis formed corresponds through the structural design of opening, make things convenient for external air source with the connection of first inlet port avoids the lateral wall of casing to cause the influence to being connected of external air source and first inlet port.

Furthermore, the width of the first opening along the two ends of the axis of the inner cavity is larger than the length of the two ends of the first plug seat, and the first plug seat can be installed and taken down through the length setting of the first opening, so that the maintenance is convenient.

Furthermore, first end cap subassembly and second end cap subassembly is the pneumatic quick sealing connector of embracing outward, adopts the pneumatic structural design who embraces quick sealing connector outward, can effectual realization engine air inlet and the quick seal of gas outlet, promotes the availability factor, and it adopts this structure, can effectual assurance engine's quality, avoids because the pressure in the test process, takes place the damage that extrusion deformation caused the engine.

Second aspect of the invention

The embodiment of the utility model provides an airtightness detection system is still provided, detect auxiliary fixtures including above-mentioned gas tightness, still include the detector, the detector including be used for with the intake pipe of first inlet port intercommunication.

Further, still include a plurality of gas tightness detects auxiliary fixtures, it is a plurality of gas tightness detects auxiliary fixtures's installation face and equallys divide and do not is provided with the mount pad of different specifications, and is a plurality of the mount pad is used for realizing the installation of the engine of different specifications, through the structural design of mount pad, designs the mount pad of different specifications to realize the installation of the engine of different specifications, thereby improve detecting system's suitability.

Further, the gas tightness detects auxiliary fixtures still includes the bottom plate, the bottom plate includes the installation face, first end cap subassembly second end cap subassembly and the mount pad all sets up on the installation face, the installation face still is provided with and is used for mentioning the gas tightness detects auxiliary fixtures's handle, and through the structural design of handle, it is convenient gas tightness detects auxiliary fixtures's change, improves the availability factor.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model relates to an air tightness detection auxiliary tool and a detection system, through the structural design aiming at the auxiliary tool, the driving piece is adopted to realize the driving of a sealing ring, when the air tightness detection auxiliary tool is used specifically, the stroke of the driving piece can be controlled to realize the mutual matching of the sealing ring and an engine, and the relative position of the driving piece is controlled to ensure the matching strength of the sealing ring and the engine and the validity of the sealing property, thereby ensuring the validity of the air tightness detection of the engine and the detection effect;

2. the utility model relates to an air tightness detection auxiliary tool and detection system, through the structural design of casing, can effectively realize the assurance of first sealing washer, guarantee life, and be in the one end of shell is provided with the limiting plate, through the structural design to limiting plate and first driving piece, can effectively realize the sealing of engine air inlet, and adopt screw-thread fit, can realize the maintenance of encapsulated situation;

3. the utility model relates to an air tightness detection auxiliary fixtures and detecting system, through the structural design of casing, can effectual realization the assurance of first sealing washer, guarantee life, and be in the one end of shell is provided with the limiting plate, through the structural design to limiting plate and first driving piece, can effectual realization engine air inlet's sealing, and adopt screw-thread fit, can realize the maintenance of encapsulated situation;

4. the utility model relates to an air tightness detection auxiliary tool and a detection system, which are convenient for the connection of an external air source and a first air inlet hole through the structural design of an opening part, and avoid the influence of the side wall of a shell on the connection of the external air source and the first air inlet hole;

5. the utility model relates to an air tightness detection auxiliary tool and a detection system, which adopt the structural design of a pneumatic external-holding quick sealing connector, can effectively realize the quick sealing of an air inlet and an air outlet of an engine, and improve the use efficiency;

6. the utility model relates to a pair of gas tightness detects auxiliary fixtures and detecting system, through the structural design of mount pad, the design has the mount pad of different specifications to realize the installation of the engine of different specifications, thereby improve detecting system's suitability, and the structural design through the handle, it is convenient gas tightness detects auxiliary fixtures's change, improves the availability factor.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic structural diagram of an auxiliary tool provided in an embodiment of the present invention;

fig. 2 is a partial sectional view of an auxiliary tool provided in an embodiment of the present invention;

fig. 3 is a top view of the auxiliary tool provided in the embodiment of the present invention;

fig. 4 is a schematic view illustrating the cooperation between the first driving member and the first plug seat according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an auxiliary tool according to another embodiment of the present invention;

fig. 6 is a schematic structural view of an auxiliary tool according to another embodiment of the present invention;

fig. 7 is a half sectional view of the pneumatic outer quick sealing connector according to the embodiment of the present invention.

Reference numbers and corresponding part names in the figures:

100-a first plug assembly, 110-a first sealing ring, 120-a first driving piece, 121-a connector, 130-a first air inlet hole, 140-a shell, 141-a limiting plate, 141 a-a first through hole, 142-an opening part, 142 a-a first opening, 142 b-a second opening, 150-a first plug seat, 151-a connecting groove, 160-a driving hole, 200-a second plug assembly, 210-a second sealing ring, 220-a second driving piece, 300-a mounting seat, 400-a bottom plate, 410-a handle and 500-an engine.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the invention.

Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the present invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the scope of the present invention.

Examples

As shown in fig. 1-2, an embodiment of the present invention provides an auxiliary tool for air tightness detection, including a first plug assembly 100, where the first plug assembly 100 includes a first sealing ring 110, a first driving member 120, and a first air inlet 130; the first sealing ring 110 is used for matching with an air inlet of the engine 500; the first driving member 120 is used for driving the first sealing ring 110 to approach to the air inlet, so as to seal the air inlet; the first intake ports 130 are for communicating with an internal chamber of the engine 500; the plug further comprises a second plug assembly 200, wherein the second plug assembly 200 comprises a second sealing ring 210 and a second driving member 220; the second sealing ring 210 is used for matching with an air outlet of the engine 500; the second driving member 220 is used for driving the second sealing ring 210 to be close to the air outlet, so as to seal the air outlet.

As will be known to those skilled in the art, when performing the airtightness test on the engine 500, it is necessary to charge air into the inner cavity of the engine 500, and the first air charging hole is used for communicating with the inner cavity of the engine 500, so that the first sealing ring 110 should be of an annular structure to achieve air ventilation, and the first sealing ring 110 is used for achieving radial sealing of the air inlet of the engine 500.

In the sealing performance test, it is necessary to ensure airtightness of the engine 500, and therefore, it is necessary to actually seal the air outlet of the second seal ring 210 to prevent air leakage.

In the scheme, the auxiliary tool comprises a first plug assembly 100 and a second plug assembly 200 which are used for plugging an air inlet and an air outlet of an engine 500 respectively, a closed detection environment is formed in an inner cavity of the engine 500 through the two plug assemblies, so that air tightness detection of the engine 500 is completed, when the auxiliary tool is used, the first sealing ring 110 is driven by the first driving piece 120 to seal the air inlet, the second sealing ring 210 is driven by the second driving piece 220 to seal the air outlet, after sealing is completed, air is introduced into the engine 500 through the first air inlet hole 130, so that air tightness detection of the engine 500 is realized, through the structural design aiming at the auxiliary tool, the driving of the sealing rings is realized by the driving piece, when the auxiliary tool is used specifically, mutual matching of the sealing rings and the engine 500 can be realized by controlling the stroke of the driving piece, relative position control is realized through the driving piece, the matching strength of the sealing rings and the engine 500 is ensured, the effectiveness of the air tightness detection of the engine 500 is ensured, and the detection effect is ensured.

As shown in fig. 2, in some embodiments, the first plug assembly 100 further includes a housing 140, the housing 140 has an inner cavity, the first driving element 120 is in sliding fit with the inner cavity of the housing 140, one end of the inner cavity is used for being matched with an air inlet of the engine 500, the other end of the inner cavity is provided with a limiting plate 141, the limiting plate 141 is provided with a first through hole 141a, a side wall of the first through hole 141a is provided with an internal thread, the first driving element 120 is provided with an external thread matched with the first through hole, by the structural design of the housing 140, the guarantee of the first sealing ring 110 can be effectively realized, the service life is ensured, and one end of the housing is provided with the limiting plate 141, by the structural design aiming at the limiting plate 141 and the first driving element 120, the sealing of the air inlet of the engine 500 can be effectively realized, and the maintenance of the sealing state can be realized by adopting the thread fit.

As will be appreciated by those skilled in the art, with a threaded fit, adjustment of the strength of the fit can be achieved by the number of revolutions of the threads, and retention of the relative condition can be achieved by the threads.

As shown in fig. 3, in some embodiments, the first plug assembly 100 further includes a first plug seat 150, the first plug seat 150 is slidably engaged with the inner cavity, one end of the first plug seat 150 along the axial direction of the inner cavity is connected to the first driving member 120, and the other end is connected to the first sealing ring 110; the first air inlet 130 is disposed on the first plug seat 150, and one end of the first air inlet 130 is located on the sidewall of the first plug seat 150, and the other end is located on the end surface of the first plug seat 150 connected to the first sealing ring 110.

As shown in fig. 4, in some embodiments, a connection slot 151 is disposed at a connection end of the first plug seat 150 for connecting with the first driving element 120, the first driving element 120 is provided with a connection head 121 for matching with the connection slot 151, the connection head 121 is rotatably connected with the connection slot 151, and by setting a connection relationship, it can be effectively avoided that the first plug seat 150 is affected when the first driving element 120 rotates, so that a relative position of the first air inlet 130 is changed, and use is affected.

It should be noted that, the connection groove 151 should have a first receiving groove and a second receiving groove, the connector 121 includes a first connection portion and a second connection portion, the interface of the first receiving groove and the second receiving groove is a step surface, the connection position of the first connection portion and the second connection portion can be matched with the step surface, wherein the first connection portion is located in the first receiving groove, the second connection portion is located in the second receiving groove, the movable connection between the connector 121 and the connection groove 151 is realized, that is, the two are similar to the connection mode with the T-shaped groove and the T-shaped slider, the connection relationship can be maintained, and the change of the first exhaust hole position caused by the rotation of the first plug seat 150 driven by the rotation of the first driving member 120 can be avoided.

As shown in fig. 3, in some embodiments, the side wall of the housing 140 is further provided with an opening portion 142 for realizing the spatial communication between the inner cavity and the inner cavity axis, the opening portion 142 includes a first opening 142a and a second opening 142b sequentially arranged along the inner cavity axis direction, the first opening 142a is close to the limiting plate 141 relative to the second opening 142b, a central angle corresponding to a fan-shaped region formed by the first opening 142a and the inner cavity axis is greater than a central angle corresponding to a fan-shaped region formed by the second opening 142b and the inner cavity axis, through the structural design of the opening portion 142, the connection between the external air source and the first air inlet 130 is facilitated, and the side wall of the housing 140 does not affect the connection between the external air source and the first air inlet 130.

In some embodiments, the width of the first opening 142a at two ends along the axis of the inner cavity is greater than the length of the first plug seat 150 at two ends, and by setting the length, the first plug seat 150 can be installed and removed through the first opening 142a, so that the maintenance is facilitated.

As shown in fig. 5 to 7, in some embodiments, the first plug assembly 100 and the second plug assembly 200 are both pneumatic outer-holding quick-sealing connectors, and a structural design of the pneumatic outer-holding quick-sealing connectors is adopted, so that quick sealing of an air inlet and an air outlet of the engine 500 can be effectively realized, and the use efficiency is improved.

The pneumatic outer-holding quick sealing connector comprises a sealing ring, a driving hole 160, a testing hole and a driving piston, when the pneumatic outer-holding quick sealing connector is used as a sealing assembly, the pneumatic outer-holding quick sealing connector corresponds to the first plug assembly 100, the driving piston is a first driving piece 120, the testing hole is a first air vent, and the driving piston can move by inflating the first driving hole 160 so as to realize sealing. Therefore, for the present embodiment, an external air source assembly should be further provided, and the sealing is realized through the control of the air source.

It should be noted that the second plug assembly 200 is also the pneumatic outer-embracing quick-sealing connector, and when the connector is used, a test hole of the second plug assembly 200 can be plugged in a plugging manner, or the test hole is simultaneously inflated to form a relatively sealed environment, so that a test is completed.

It should be noted that, as a person skilled in the art should know, the purpose of the second plug assembly 200 is to seal the air outlet of the engine 500, so the second plug assembly 200 is different from the first plug assembly in the sealing of the air inlet, for the second plug assembly 200, the structure is similar to that of the first plug assembly 100, for the structure of the pneumatic outer-locking quick-sealing connector, an external component needs to be arranged, or the tightness of the inner cavity is ensured by ventilating the air inlet, so as to complete the test.

The embodiment of the utility model provides an airtightness detection system is still provided, detect auxiliary fixtures including above-mentioned gas tightness, still include the detector, the detector including be used for with the intake pipe of first inlet port 130 intercommunication.

In some embodiments, the air tightness detection auxiliary tool further comprises a plurality of air tightness detection auxiliary tools, mounting seats 300 with different specifications are respectively arranged on mounting surfaces of the air tightness detection auxiliary tools, the mounting seats 300 are used for mounting engines 500 with different specifications, and the mounting seats 300 with different specifications are designed through structural design of the mounting seats 300, so that the mounting of the engines 500 with different specifications is realized, and the applicability of the detection system is improved.

In some embodiments, the auxiliary air tightness detection tool further comprises a bottom plate 400, the bottom plate 400 comprises a mounting surface, the first plug assembly 100, the second plug assembly 200 and the mounting base 300 are all arranged on the mounting surface, the mounting surface is further provided with a handle 410 for lifting the auxiliary air tightness detection tool, and through the structural design of the handle 410, the auxiliary air tightness detection tool is convenient to replace, and the use efficiency is improved.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. An auxiliary tool for detecting air tightness is characterized by comprising,

the first plug assembly (100), the first plug assembly (100) comprises a first sealing ring (110), a first driving part (120) and a first air inlet hole (130);

the first sealing ring (110) is used for matching with an engine air inlet;

the first driving piece (120) is used for driving the first sealing ring (110) to be close to the air inlet so as to realize the sealing of the air inlet;

the first intake port (130) is for communication with an internal chamber of an engine;

the sealing device further comprises a second plug assembly (200), wherein the second plug assembly (200) comprises a second sealing ring (210) and a second driving piece (220);

the second sealing ring (210) is used for being matched with an air outlet of an engine;

the second driving piece (220) is used for driving the second sealing ring (210) to be close to the air outlet, and sealing of the air outlet is achieved.

2. The airtightness detection auxiliary tool according to claim 1, wherein the first plug assembly (100) further comprises a housing (140), the housing (140) has an inner cavity, the first driving member (120) is in sliding fit with the inner cavity of the housing (140), one end of the inner cavity is used for being matched with an air inlet of an engine, a limiting plate (141) is arranged at the other end of the inner cavity, a first through hole (141 a) is formed in the limiting plate (141), an internal thread is formed in a side wall of the first through hole (141 a), and an external thread matched with the first through hole (141 a) is formed in the first driving member (120).

3. The auxiliary tool for detecting the airtightness according to claim 2, wherein the first plug assembly (100) further comprises a first plug seat (150), the first plug seat (150) is in sliding fit with the inner cavity, one end of the first plug seat (150) in the axial direction of the inner cavity is connected with the first driving part (120), and the other end of the first plug seat is connected with the first sealing ring (110); the first air inlet hole (130) is formed in the first plug seat (150), one end of the first air inlet hole (130) is located on the side wall of the first plug seat (150), and the other end of the first air inlet hole is located on the end face, connected with the first sealing ring (110), of the first plug seat (150).

4. The auxiliary tool for detecting the air tightness according to claim 3, wherein a connecting groove (151) is formed in a connecting end, used for being connected with the first driving piece (120), of the first plug seat (150), a connecting head (121) used for being matched with the connecting groove (151) is arranged on the first driving piece, and the connecting head (121) is rotatably connected with the connecting groove (151).

5. The air tightness detection auxiliary tool according to claim 3 or 4, wherein an opening portion (142) for communicating the inner cavity with a space on one side of the inner cavity axis is further arranged on the side wall of the housing (140), the opening portion (142) comprises a first opening (142 a) and a second opening (142 b) which are sequentially arranged along the inner cavity axis, the first opening (142 a) is close to the limiting plate (141) relative to the second opening (142 b), and a central angle of the first opening (142 a) corresponding to a fan-shaped area formed by the inner cavity axis is larger than a central angle of the second opening (142 b) corresponding to the fan-shaped area formed by the inner cavity axis.

6. The auxiliary tool for detecting the air tightness according to claim 5, wherein the width of the first opening (142 a) at two ends along the axis of the inner cavity is greater than the length of the first plug seat (150) at two ends.

7. The auxiliary tool for the airtightness detection according to claim 1, wherein the first plug assembly (100) and the second plug assembly (200) are pneumatic externally-embracing quick-sealing connectors.

8. An air tightness detection system is characterized by comprising the air tightness detection auxiliary tool according to any one of claims 1 to 7 and a detector, wherein the detector comprises an air inlet pipe communicated with the first air inlet hole.

9. The airtightness detection system according to claim 8, further comprising a plurality of airtightness detection auxiliary tools, wherein mounting seats (300) of different specifications are respectively arranged on mounting surfaces of the plurality of airtightness detection auxiliary tools, and the plurality of mounting seats (300) are used for mounting engines of different specifications.

10. The airtightness detection system according to claim 9, wherein the airtightness detection auxiliary tool further comprises a bottom plate (400), the bottom plate (400) comprises a mounting surface, the first plug assembly (100), the second plug assembly (200) and the mounting seat (300) are all disposed on the mounting surface, and the mounting surface is further provided with a handle (410) for lifting the airtightness detection auxiliary tool.

Images