CN216116555U - Air tightness detection device - Google Patents

Abstract

The application provides an air tightness detection device, and relates to the field of air tightness detection. The airtightness detection apparatus includes a base and a cover member. The base is used for supporting the box body and sealing one end of the box body in a preset direction. The base has the medium import, and the medium import is used for letting in the detection medium to box inside. The lid closes the piece and sets up with the base is relative on predetermineeing the direction, and the lid closes the piece and is used for optionally lid to fit the box to sealed box is predetermineeing the ascending other end in direction. The air tightness detection device is suitable for detecting the air tightness of a box body finished product with an opening at one end and the air tightness of a box body semi-finished product with openings at two ends, and has strong adaptability.

Description

Air tightness detection device

Technical Field

The application relates to the field of airtightness detection, in particular to an airtightness detection device.

Background

Batteries are widely applied in the field of new energy resources, such as electric vehicles, new energy vehicles and the like, and the new energy vehicles and the electric vehicles become new development trends of the automobile industry. The battery comprises a box body and a battery monomer, wherein the box body generally comprises an upper box body and a lower box body, and the upper box body and the lower box body are mutually covered to jointly define a containing space for containing the battery monomer. The lower box body needs to be subjected to air tightness detection in the manufacturing process so as to ensure the reliability of the lower box body in protecting the battery monomer. The existing air tightness detection only can carry out air tightness detection on a finished product of the lower box body, but cannot carry out air tightness detection on a semi-finished product of the lower box body, and the adaptability is poor.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide an air tightness detection device, can alleviate present air tightness and detect and only can carry out the air tightness to the finished product of box down and detect, can not carry out the air tightness to the semi-manufactured goods of box and detect, the relatively poor problem of adaptability.

In a first aspect, an embodiment of the application provides an air tightness detection device, and this air tightness detection device includes base and lid piece, the base is used for supporting the box and seals the ascending one end of box in the preset direction, the base has the medium import, the medium import be used for to the inside detection medium that lets in of box, the lid piece is in on the preset direction with the base sets up relatively, the lid piece is used for optionally lid to fit the box, in order to seal the box is in the ascending other end of preset direction.

In the above technical solution, the base can support and seal one end opening of the box body in the preset direction, and the cover member can selectively seal the other end of the box body in the preset direction. In the case of a finished box with an open end, the opening can be sealed only by the base, while in the case of a semi-finished box with an open end, the two openings can be sealed by the base and the cover, respectively. And a detection medium can be introduced into the box body through the medium inlet so as to finish the air tightness detection. The air tightness detection device can be suitable for detecting the air tightness of a box body finished product with an opening at one end and the air tightness of a box body semi-finished product with openings at two ends, and has strong adaptability.

As an optional technical scheme of the embodiment of the application, one side of the cover element facing the base is provided with a first sealing element, and the first sealing element is used for sealing the cover element and the box body.

In above-mentioned technical scheme, through setting up first sealing member, promote the sealing performance between lid closes the piece and the box, improve the accuracy that detects.

As an optional technical scheme of this application embodiment, the piece that closes of lid has first spacing portion, the base has the spacing portion of second, first spacing portion with the spacing portion of second is used for when leaning on each other stopping the piece that closes with the base is in predetermine the orientation and be close to each other.

In above-mentioned technical scheme, through setting up the spacing portion of first spacing portion and second, first spacing portion and the spacing portion of second can prevent base and closure piece when it supports each other and be close to each other in predetermineeing the orientation to the distance between closure piece and the base when control carries out the gas tightness detection at every turn guarantees that the closure piece compresses tightly in the box, guarantees the gas tightness between closure piece and the box.

As an optional technical scheme of this application embodiment, the lid closes the piece and has a plurality of circumference interval distribution's first spacing portion, the base has a plurality of second spacing portions, the spacing portion of second with first spacing portion position is corresponding.

In above-mentioned technical scheme, through setting up the spacing portion of a plurality of first spacing portions and a plurality of second for first spacing portion and the spacing position of second are corresponding, and a plurality of first spacing portions and a plurality of spacing portions of second can support spacing lid piece jointly, make the lid piece stabilize the lid and fit the base.

As an optional technical scheme of the embodiment of the application, a V-shaped protrusion is formed on the first limiting portion, a V-shaped groove is formed on the second limiting portion, and the V-shaped protrusion is used for being in plug-in fit with the V-shaped groove.

In the technical scheme, the V-shaped protrusion is formed on the first limiting part, the V-shaped groove is formed on the second limiting part, the V-shaped groove is provided with a large opening on one hand and is easy to match with the V-shaped protrusion, and on the other hand, the groove wall of the V-shaped groove has a guiding function, so that the tip of the V-shaped protrusion can be guided to the bottom of the V-shaped groove, the V-shaped groove and the V-shaped protrusion are accurately matched at every time, and the relative position of the cover assembly and the base is accurate.

As an optional technical solution of the embodiment of the present application, the base is formed with a detection cavity, the detection cavity is formed with an opening at an end of the base facing the covering member, and the end of the base forming the opening is used for supporting and sealing an end of the box body in the preset direction; the medium inlet is communicated with the detection cavity.

In above-mentioned technical scheme, form the open-ended one end support and the sealed box that detects the chamber through the base, compare in the scheme that holds the box in detecting the intracavity, can adapt to the manufacturing error of box to a certain extent, improve the sealing performance to the box.

As an optional technical solution of the embodiment of the present application, a plurality of guiding members are arranged on the base at intervals in the circumferential direction, and the guiding members are used for guiding one end of the box body in the preset direction to one end of the base where the opening is formed.

In the technical scheme, the box body is guided to the base through the plurality of guiding pieces to form the open end, so that the relative position of the box body and the base is ensured to be accurate and reliable, and the sealing performance of the base on one end of the box body in the preset direction is ensured.

As an optional technical solution of the embodiment of the present application, a second sealing member is disposed on an end of the base where the opening is formed, and the second sealing member is used for sealing the base and the box body.

In the technical scheme, the second sealing element is arranged, so that the sealing performance of the base and the box body is improved, and the accuracy and reliability of the air tightness detection of the box body are guaranteed.

As an optional technical scheme of this application embodiment, the base includes base member and supporter, the supporter encloses to be located the base member, the supporter with the base member is injectd jointly the detection chamber, the supporter is in deviate from in the predetermined direction the one end of base member forms the opening, be formed with the guiding gutter on the base member, the guiding gutter is located the outside of supporter.

In the technical scheme, the diversion trench is arranged on the outer side of the support body, and can collect the liquid detection medium and guide the liquid detection medium to be discharged when the foam detection is carried out.

As an optional technical solution of the embodiment of the present application, a seal groove is formed on the base body; the air tightness detection device comprises a third sealing element, wherein the third sealing element is accommodated in the sealing groove and is positioned between the supporting body and the base body, and the third sealing element is used for sealing the base body and the supporting body.

In the technical scheme, the sealing groove is formed in the base body, the third sealing element is arranged in the sealing groove and is positioned between the support body and the base body, and therefore the sealing performance between the base body and the support body is improved.

As an optional technical scheme of the embodiment of the application, the air tightness detection device further comprises a filling piece, wherein the filling piece is filled in the detection cavity so as to reduce the amount of detection media which need to be introduced into the detection cavity and the box body.

In above-mentioned technical scheme, through set up the packing piece in detecting the intracavity, can reduce the free volume in box and detection chamber, reduce the detection medium volume that needs let in to detection chamber and box inside, reduce measuring result's fluctuation, promote measuring result's accuracy.

As an optional technical scheme of the embodiment of the application, the filling piece exceeds the base, so that the filling piece can extend into the box body.

In above-mentioned technical scheme, surpass the base through making the filling member for inside the filling member can stretch into the box, reduced the free volume of box, reduced the detection medium volume that needs let in to the box inside, reduced measuring result's fluctuation, promoted measuring result's accuracy.

As an optional technical solution of the embodiment of the present application, the air-tightness detecting device includes a plurality of pressing mechanisms, the plurality of pressing mechanisms are connected to the base in a position-adjustable manner, and the pressing mechanisms are used for pressing the box body to the base or pressing the cover member to the box body.

In above-mentioned technical scheme, through setting up extrusion mechanism, extrusion mechanism can extrude the box in the base or with the closure piece extrusion in the box to promote the leakproofness between box and the base or the leakproofness between closure piece and box, box and the base. In addition, the positions of the plurality of extrusion mechanisms are adjustably connected to the base, so that the positions of the plurality of extrusion mechanisms can be adjusted as required, and the accuracy of the positions of the extrusion points acting on the cover assembly or the box body is ensured.

As an optional technical solution of the embodiment of the present application, the base includes a base main body and a workbench, a plurality of through holes are uniformly formed on the workbench, the number of the through holes is more than that of the extrusion mechanisms, and the extrusion mechanisms are selectively connected to the workbench through the through holes; the base main body is connected with the workbench, the base main body is used for supporting the box body and sealing one end of the box body in the preset direction, and the medium inlet is formed in the base main body.

In the technical scheme, the through holes are formed in the workbench, so that the extrusion mechanism is selectively connected to the workbench through the through holes, and the position-adjustable connection between the extrusion mechanism and the workbench is realized. By adopting the mode, an additional structure is not required to be added on the workbench, and the method is simple and convenient.

As an optional technical scheme of this application embodiment, the box has the pressure release part, gas tightness detection device still includes the shutoff piece, the shutoff piece with the pedestal connection, the shutoff piece is used for the shutoff the pressure release part.

In above-mentioned technical scheme, through setting up the shutoff piece, carry out the shutoff to the relief pressure part of box, promote the accuracy of the gas tightness measurement to the box.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic overall structure diagram of an air-tightness detection device provided in some embodiments of the present application;

FIG. 2 is a schematic top view of a substrate and a support of the air-tightness testing device provided in some embodiments of the present application;

fig. 3 is a schematic view of an overall structure of a base of the airtightness detection apparatus according to some embodiments of the present application;

fig. 4 is a side view, in half-section, of a base of a hermeticity detection device provided in some embodiments of the present application.

Icon: 10-air tightness detection means; 100-a base; 110-a media inlet; 120-a substrate; 121-a second limiting part; 122-guiding gutter; 123-diversion holes; 124-a third seal; 130-a support; 131-a second seal; 140-a detection chamber; 150-a workbench; 151-through holes; 200-a closure; 210-a first limit part; 300-an extrusion mechanism; 400-a guide; 500-a filler piece; 600-a blocking piece.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

At present, the application of the power battery is more and more extensive from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and a plurality of fields such as military equipment and aerospace. With the continuous expansion of the application field of the power battery, the market demand is also continuously expanding.

The battery comprises a box body and a battery monomer, wherein the box body generally comprises an upper box body and a lower box body, and the upper box body and the lower box body are mutually covered to jointly define a containing space for containing the battery monomer. The lower box body needs to be subjected to air tightness detection in the manufacturing process so as to ensure the reliability of the lower box body in protecting the battery monomer. The existing air tightness detection only can carry out air tightness detection on a finished product of the lower box body, but cannot carry out air tightness detection on a semi-finished product of the lower box body, and the adaptability is poor.

The finished product of the lower box body is a box body structure with one open end, and the semi-finished product of the lower box body is a tubular structure with two open ends. By sealing one end of the semi-finished product of the lower box body, a finished product of the lower box body can be manufactured. In the production process, the semi-finished product of the lower box body is subjected to air tightness detection, so that the air tightness qualification rate of the finished product can be improved. The inventor finds that in the prior art, the air tightness is detected by arranging a groove on a workbench, reversely buckling a lower box body in the groove and then inflating the box body for detection. However, because the semi-finished product of the lower box body is of a cylindrical structure with openings at two ends, when the semi-finished product of the lower box body is reversely buckled in the groove, the other end of the lower box body leaks air, so that the prior art cannot detect the air tightness of the semi-finished product of the lower box body, and the adaptability is poor.

In view of the above, the applicant has conducted extensive studies to design an air-tightness detecting device including a base capable of supporting and sealing one end opening of a case in a preset direction and a cover capable of selectively sealing the other end of the case in the preset direction. In the case of a finished box with an open end, the opening can be sealed only by the base, while in the case of a semi-finished box with an open end, the two openings can be sealed by the base and the cover, respectively. And a detection medium can be introduced into the box body through the medium inlet so as to finish the air tightness detection. The air tightness detection device can be suitable for detecting the air tightness of a box body finished product with an opening at one end and the air tightness of a box body semi-finished product with openings at two ends, and has strong adaptability.

The air tightness detection device disclosed by the embodiment of the application can be used for carrying out air tightness detection on the box with an opening at one end and can also be used for carrying out air tightness detection on the box with openings at two ends. The box body can be a finished product of a lower box body of the battery, a semi-finished product of a lower box body of the battery, a finished product of an upper box body of the battery, and a semi-finished product of an upper box body of the battery, but is not limited to the above. The box body can be in various shapes, such as a cylinder, a cuboid and the like.

Referring to fig. 1, fig. 1 is a schematic overall structural diagram of an air-tightness detecting device 10 according to some embodiments of the present disclosure. The embodiment of the application provides an air tightness detection device 10, this air tightness detection device 10 includes base 100 and lid piece 200, base 100 is used for supporting the box and seals the box and predetermines ascending one end of orientation, base 100 has medium import 110, medium import 110 is used for letting in the detection medium to the box is inside, lid piece 200 is relative with base 100 in the orientation of predetermineeing and is set up, lid piece 200 is used for optionally lid to fit the box to the other end of sealed box in the orientation of predetermineeing.

The base 100 is a member for supporting the case and sealing one end of the case in a predetermined direction. Generally, the base 100 is a force-bearing part of the airtightness detection apparatus 10.

The medium inlet 110 is an opening in the base 100 for the passage of a detection medium, which may be a gas, such as air, or a liquid, such as foam water.

The cover 200 is a member for selectively covering the case to seal the other end of the case in a predetermined direction. The term "selectively" used herein means that whether the box is covered or not is determined according to the structure of the box to be detected. For example, when the gas tightness of the semi-finished product of the box (the box with two open ends or the tubular structure with two open ends) needs to be tested, the base 100 may seal one end of the semi-finished product of the box in the predetermined direction, and the cover 200 covers the semi-finished product of the box to seal the other end of the semi-finished product of the box in the predetermined direction. When the finished product of the box body (the box body with one open end) needs to be subjected to air tightness detection, the base body 120 seals one end of the finished product of the box body in the preset direction, and the cover part 200 does not need to be covered on the other end of the box body in the preset direction due to the fact that only one end of the box body is open.

The base 100 of the air-tightness detecting device 10 can support and seal one end opening of the case in a predetermined direction, and the cover 200 can selectively seal the other end of the case in the predetermined direction. In the case of a case product having one end open, the opening thereof can be sealed only by the base 100, while in the case of a case semi-product having both ends open, the two openings thereof can be sealed by the base 100 and the lid member 200, respectively. And a detection medium can be introduced into the box body through the medium inlet so as to finish the air tightness detection. The air tightness detection device 10 can be suitable for detecting the air tightness of a box body finished product with an opening at one end and the air tightness of a box body semi-finished product with openings at two ends, and has strong adaptability.

In some embodiments of the present application, the side of the cover 200 facing the base 100 is provided with a first seal for sealing the cover 200 and the case.

The first sealing element is a component having a sealing function, such as a sealing glue, a sealing gasket or a sealing sheet. The first sealing element is arranged on one side of the cover element 200 facing the base 100, so that the cover element 200 and the box body are sealed when the cover element 200 covers the box body, and the phenomenon that detection media leak from the cover element 200 and the box body to cause inaccurate air tightness detection is avoided.

Through setting up first sealing member, promote the sealing performance between lid closes the piece 200 and the box, improve the accuracy that detects.

Optionally, the first sealing element is a sealing glue coated on the covering element 200 along the circumferential direction of the covering element 200. The width of the sealant is 10mm, and the thickness is 5 mm. If the width and the thickness of the sealant are too large, the detection leak point of the sealant can be sealed, and if the width and the thickness of the sealant are too small, the sealing performance is poor.

In some embodiments of the present application, the cover 200 has a first position-limiting portion 210, the base 100 has a second position-limiting portion 121, and the first position-limiting portion 210 and the second position-limiting portion 121 are used for preventing the cover 200 and the base 100 from approaching each other in a predetermined direction when abutting against each other.

The first position-limiting part 210 is a part of the cover 200 for abutting against the second position-limiting part 121 of the base 100. The second position-limiting part 121 is a part of the base 100, which is used to abut against the first position-limiting part 210 of the cover 200. When the first position-limiting portion 210 abuts against the second position-limiting portion 121, the distance between the cover 200 and the base 100 in the predetermined direction is the smallest, and the cover 200 and the base 100 can not approach each other.

Through setting up first spacing portion 210 and the spacing portion 121 of second, first spacing portion 210 and the spacing portion 121 of second can prevent base 100 and lid piece 200 when it leans on each other and be close to each other in the direction of predetermineeing to the distance between lid piece 200 and the base 100 when control carries out the gas tightness at every turn and detects guarantees that lid piece 200 compresses tightly in the box, guarantees the gas tightness between lid piece 200 and the box.

Since the side of the cover 200 facing the base 100 is provided with the first sealing member, and the first sealing member generally has elasticity, it can be elastically deformed to improve the sealing effect. The distance between the covering part 200 and the base 100 is controlled by the first limiting part 210 and the second limiting part 121 to detect the air tightness each time, the covering part 200 is guaranteed to be pressed on the box body, the first sealing part seals the covering part 200 and the box body, and the air tightness between the covering part 200 and the box body is guaranteed.

In some embodiments of the present application, the cover assembly 200 has a plurality of first position-limiting portions 210 distributed at intervals in the circumferential direction, the base 100 has a plurality of second position-limiting portions 121, and the second position-limiting portions 121 correspond to the first position-limiting portions 210.

Through setting up a plurality of first spacing portions 210 and a plurality of second spacing portion 121 for first spacing portion 210 and second spacing portion 121 position are corresponding, and a plurality of first spacing portions 210 and a plurality of second spacing portion 121 can support spacing lid spare 200 jointly, make lid spare 200 stabilize the lid and fit base 100.

In some embodiments of the present application, a V-shaped protrusion is formed on the first position-limiting portion 210, and a V-shaped groove is formed on the second position-limiting portion 121, and the V-shaped protrusion is used for being inserted into and matched with the V-shaped groove.

The V-shaped protrusion is a V-shaped portion formed on the first position-limiting portion 210. The V-shaped groove is a portion having a V-shaped cross section formed on the second stopper portion 121.

Through forming the V-arrangement protruding on first spacing portion 210, form the V-arrangement recess on spacing portion 121 of second, the V-arrangement recess has great opening on the one hand, it is comparatively easy when protruding cooperation with the V-arrangement, and on the other hand, the cell wall of V-arrangement recess has the guide effect, can guide the bellied pointed end of V-arrangement to the bottom of V-arrangement recess, guarantees that V-arrangement recess and the bellied cooperation position of V-arrangement are accurate unanimous at every turn for the closure 200 is accurate with the relative position of base 100.

Referring to fig. 2, fig. 2 is a schematic top view of a base 120 and a support 130 of the air-tightness testing device 10 according to some embodiments of the present disclosure. In some embodiments of the present application, the base 100 is formed with a detection chamber 140. The detection chamber 140 is opened at an end of the base 100 facing the cover 200, and the open end of the base 100 is used to support and seal an end of the case in a predetermined direction. The media inlet 110 communicates with the detection chamber 140.

The detection chamber 140 is a portion of the base 100 for receiving a detection medium and for passing the detection medium to the interior of the case. In other words, the detection chamber 140 serves to communicate the medium inlet 110 and the inside of the case when the base 100 supports and seals one end of the case in a preset direction. The detection medium entering from the medium inlet 110 enters the interior of the box body through the detection cavity 140 to realize the air tightness detection of the box body. One end of the sensing chamber 140 is opened, and the open-ended end of the base 100 is used to support and seal one end of the casing in a predetermined direction.

The case is supported and sealed by the open end of the base 100 forming the detection chamber 140, and thus, compared with a case accommodated in the detection chamber 140, the case can adapt to a manufacturing error of the case to a certain extent, and the sealing performance of the case is improved. For example, in the case of a square case, when the side length of the outer periphery of the case is too large, the case cannot be accommodated in the detection chamber 140, and the case can be supported and sealed by the end of the base 100 where the opening of the detection chamber 140 is formed. When the length of the side of the periphery of the box is smaller than normal, the sealing effect when the box is accommodated in the detection cavity 140 is not good (in the prior art, only the sealant is arranged on the edge of the bottom wall of the groove, and when the length of the periphery of the box is smaller than normal, the box cannot be attached to the sealant), and the box is supported and sealed by the end, forming the opening of the detection cavity 140, of the base 100, and the sealing effect is not affected.

Referring to fig. 3, a schematic view of an overall structure of a base 100 of the hermeticity detection apparatus 10 according to some embodiments of the present disclosure is shown. In some embodiments of the present application, a plurality of guides 400 are disposed on the base 100 at intervals in the circumferential direction, and the guides 400 are used for guiding one end of the box body in a predetermined direction to one end of the base 100 where the opening is formed.

The guide 400 is a member capable of guiding one end of the case in a predetermined direction to one end of the base 100 where the opening is formed. The guide 400 has a guide function, and the cabinet can be smoothly guided to the base 100 by the guide 400 so that the base 100 supports and seals the cabinet.

The box body is guided to the end, forming the opening, of the base 100 by the plurality of guiding pieces 400, so that the relative position of the box body and the base 100 is guaranteed to be accurate and reliable, and the sealing performance of the base 100 to the end, in the preset direction, of the box body is guaranteed.

In some embodiments of the present application, the guide 400 includes a mounting portion mounted to the base 100 and a guide portion connected to the mounting portion. The guide portion serves to guide one end of the case in a predetermined direction to one end of the base 100 where the opening is formed. Alternatively, the guide portion and the mounting portion are formed in an L-shape as a whole.

In some embodiments of the present application, a guide slope is formed on an end of the guide portion away from the mounting portion so as to guide an end of the case in a predetermined direction to an end of the base 100 where the opening is formed.

In some embodiments of the present application, a second sealing member 131 is disposed on an end of the base 100 forming the opening, and the second sealing member 131 is used to seal the base 100 and the case.

The second sealing member 131 is a member having a sealing function, such as a sealant, a packing, a sealing sheet, or the like. The second sealing member 131 is disposed at an end of the base 100 where the opening is formed, so that the base 100 and the box are sealed when the base 100 is supported by the box, thereby preventing a detection medium from leaking between the base 100 and the box, which may cause inaccurate airtightness detection.

Through setting up second sealing member 131, promote the sealing performance of base 100 and box, guarantee to detect accurate reliable to the gas tightness of box.

In some embodiments of the present application, the base 100 includes a base 120 and a support 130, the support 130 surrounds the base 120, and the support 130 and the base 120 together define a detection chamber 140. An end of the supporting body 130 facing away from the base body 120 in a predetermined direction is opened. The base 120 is formed with a guide groove 122, and the guide groove 122 is located outside the support 130.

The support 130 is an enclosure structure on the base 100 enclosing the detection chamber 140, and the inner surface of the support 130 is a side wall of the detection chamber 140.

The base 120 is a structure on the base 100 that is connected to one end of the support 130 in a predetermined direction to close one end of the detection chamber 140 in the predetermined direction. The surface of the base 120 close to the support 130 is the bottom wall of the detection chamber 140. The base 120 and the support 130 together define a receiving cavity with an open end.

One end of the supporting body 130, which faces away from the base body 120 in the preset direction, forms an opening of the detection chamber 140, and one end of the supporting body 130, which faces away from the base body 120 in the preset direction, can support and seal one end of the box body in the preset direction.

The guiding groove 122 is a groove opened on the base 120 and located outside the supporting body 130. Optionally, channel 122 is annular, and channel 122 is disposed around support 130.

By providing the diversion trench 122 on the outer side of the support 130, the diversion trench 122 can collect the liquid detection medium and guide the liquid detection medium to be discharged when performing the foam detection.

In some embodiments of the present application, the media inlet 110 is disposed in the support 130. In other embodiments of the present application, the media inlet 110 is disposed in the substrate 120.

In some embodiments of the present disclosure, the base 120 has a guiding hole 123, and the guiding hole 123 is communicated with the guiding groove 122. Optionally, the diversion hole 123 penetrates through the outer circumferential surface of the base 120 and the groove wall of the diversion groove 122 so as to discharge the liquid detection medium collected by the diversion groove 122.

Referring to fig. 4, fig. 4 is a side view, semi-sectional view of a base 100 of the hermeticity detection apparatus 10 according to some embodiments of the present disclosure. In some embodiments of the present disclosure, the base 120 has a sealing groove. The air-tightness detecting device 10 includes a third sealing member 124, and the third sealing member 124 is accommodated in the sealing groove. A third seal 124 is located between the support body 130 and the base body 120, the third seal 124 being for sealing the base body 120 and the support body 130.

The third sealing member 124 is a member having a sealing function, such as a sealing rubber, a gasket, a sealing sheet, or the like. The third sealing member 124 is disposed on a side of the base 120 facing the supporting body 130 to seal the base 120 and the supporting body 130, so as to prevent the detection medium from leaking between the base 120 and the supporting body 130, which may result in inaccurate air tightness detection.

The sealing groove is a groove opened on a side of the base 120 facing the support body 130 and receiving the third seal 124.

The sealing groove is formed in the base 120, and the third sealing member 124 is disposed in the sealing groove, so that the third sealing member 124 is located between the support 130 and the base 120, thereby improving the sealing property between the base 120 and the support 130.

In some embodiments of the present application, the air-tightness detecting device 10 further includes a filling member 500, and the filling member 500 is filled in the detection cavity 140 to reduce the amount of the detection medium that needs to be introduced into the detection cavity 140 and the box interior.

The filling member 500 is a member filled in the detection chamber 140. The packing 500 can reduce the remaining space within the detection chamber 140. When the air tightness of the larger box body is detected, the amount of detection media which needs to be filled into the detection cavity 140 can be reduced, and the detection efficiency is improved. The filler blocks may be nylon blocks.

Through set up filler 500 in detecting chamber 140, can reduce the free volume (the volume that remains after being taken up by filler 500, also can understand as the volume that needs to detect the medium and fill) of box and detection chamber 140, reduce the detection medium volume that need let in to detection chamber 140 and box inside, reduce the fluctuation of measuring result, promote measuring result's accuracy.

In some embodiments of the present application, the air tightness detecting device 10 comprises a plurality of filling members 500, the plurality of filling members 500 are distributed in the detecting cavity 140 at intervals, and it should be noted that the filling members 500 do not block the medium inlet 110.

In some embodiments of the present application, the filler 500 protrudes beyond the base 100 so that the filler 500 can protrude into the interior of the tank.

"the filler 500 exceeds the base 100" means that the height of the filler 500 is higher than that of the base 100. I.e., the height of the filling member 500 is higher than that of the supporting body 130. The filler member 500 extending beyond the base 100 may also be understood as the filler member 500 extending out of the detection chamber 140.

Through making filler 500 surpass base 100 for inside filler 500 can stretch into the box, reduced the free volume of box, reduced the detection medium volume that needs let in to the box inside, reduced measuring result's fluctuation, promoted measuring result's accuracy.

In some embodiments of the present application, the air-tightness detecting device 10 includes a plurality of pressing mechanisms 300, the plurality of pressing mechanisms 300 are adjustably coupled to the base 100, and the pressing mechanisms 300 are used for pressing the case to the base 100 or for pressing the cover 200 to the case.

The pressing mechanism 300 is a structure for applying a pressing force to the cover 200 or the case to press the cover 200 to the case or to press the case to the base 100. The pressing mechanism 300 may be a pressing arm.

By providing the pressing mechanism 300, the pressing mechanism 300 can press the case to the base 100 or press the cover 200 to the case, so as to improve the sealing performance between the case and the base 100 or between the cover 200 and the case or between the case and the base 100. In addition, the position of the plurality of pressing mechanisms 300 can be adjusted as required by connecting the plurality of pressing mechanisms 300 to the base 100 in a position-adjustable manner, so that the accuracy of the position of the pressing point acting on the cover member 200 or the box body is ensured.

Optionally, the pressing mechanism 300 comprises a support and an extrusion, wherein the support comprises a vertical rod and a horizontal rod, the vertical rod is connected to the base 100 in a position-adjustable manner, and the horizontal rod is arranged at one end of the vertical rod far away from the base 100 in a penetrating manner, so that the horizontal rod can move relative to the vertical rod. The extrusion piece is in threaded connection with one end of the cross rod away from the vertical rod, and the lower end of the extrusion piece is provided with an extrusion head for abutting against the cover member 200 or the box body. By rotating the extrusion piece, the extrusion piece can be moved up and down integrally relative to the cross bar, so that the extrusion head acts on the cover 200 or the box body, and applies extrusion force to the cover 200 or the box body to extrude the cover 200 to the box body or extrude the box body to the base 100.

In some embodiments of the present application, the base 100 includes a base body and a table 150. The workbench 150 is uniformly provided with a plurality of through holes 151, and the number of the through holes 151 is more than that of the extrusion mechanisms 300. The pressing mechanism 300 is selectively connected to the table 150 through the through-hole 151. The base main body is connected to the table 150, and the base main body serves to support the case and seal one end of the case in a predetermined direction. The media inlet 110 opens into the base body.

The base body is a portion of the base 100 for supporting and sealing one end of the case in a predetermined direction. The base body includes the above-described base body 120 and the support body 130. The table 150 is a portion of the base 100 for supporting a body of the base.

"the pressing mechanism 300 is selectively connected to the table 150 through the through-hole 151" means that one pressing mechanism 300 can select one through-hole 151 from a plurality of through-holes 151 and be connected to the table 150 through the through-hole 151. Thus, the position of the extrusion mechanism 300 can be selected in various ways, and during construction, the extrusion mechanism 300 can be installed by selecting a proper through hole 151 according to construction requirements, so that the position of the extrusion mechanism 300 acting on the cover element 200 or the box body is more reasonable.

The pressing mechanism 300 is selectively connected to the worktable 150 through the through holes 151 by forming a plurality of through holes 151 in the worktable 150, so that the position of the pressing mechanism 300 and the worktable 150 can be adjustably connected. In this way, an additional structure is not required to be added on the workbench 150, and the operation is simple and convenient.

In some embodiments of the present application, the base 120 is selectively coupled to the table 150 through the through hole 151, so that the base 120 is adjustably coupled to the table 150.

In some embodiments of the present application, the tank has a pressure relief feature. The air tightness detecting device 10 further comprises a plugging member 600, the plugging member 600 is connected with the base 100, and the plugging member 600 is used for plugging the pressure relief component.

The pressure relief part is a part for relieving the internal pressure when the internal pressure or temperature of the tank reaches a threshold value.

The blocking member 600 is a structure for being coupled to a pressure relief member to block the pressure relief member. The closure 600 may be a bulkhead.

Through setting up shutoff piece 600, carry out the shutoff to the pressure release part of box, prevent when carrying out the gas tightness and detect, detect the medium and discharge from pressure release part to promote the accuracy of measuring the gas tightness of box.

The airtightness detection apparatus 10 provided in the embodiment of the present application is used as follows:

for the semi-finished product of the box, the semi-finished product of the box is placed above the base 100 and guided by the guide 400 so that one end of the semi-finished product of the box in the predetermined direction is in contact with one end of the supporting body 130 forming the opening of the detection chamber 140. Then, the cover member 200 is covered on the other end of the semi-finished product of the box body in the preset direction. The through-hole 151 is selected as necessary, and the plurality of pressing mechanisms 300 are attached to the table 150. The pressing mechanisms 300 apply a pressing force to the cover 200, so that the first position-limiting portion 210 and the second position-limiting portion 121 abut against each other, and the cover 200 and the base 100 are prevented from approaching each other in the predetermined direction. At this time, one end of the supporting body 130, which forms the opening of the detection chamber 140, supports and seals one end of the semi-finished product of the case in the preset direction, and the cover 200 seals the other end of the semi-finished product of the case in the preset direction. Thereafter, the pressure relief member is closed by the closing member 600, and a medium is introduced from the medium inlet 110, and the airtightness is detected.

For the finished product of the box, the finished product of the box is placed above the base 100 and guided by the guide 400 so that one end of the finished product of the box in the predetermined direction is in contact with one end of the supporting body 130 forming the opening of the detection chamber 140. Thereafter, the through-hole 151 is selected as necessary, and the plurality of pressing mechanisms 300 are attached to the table 150. By applying the pressing force to the lid member 200 by the plurality of pressing mechanisms 300, the end of the support body 130, which forms the opening of the detection chamber 140, supports and seals the end of the semi-finished product of the case in the preset direction. Thereafter, the pressure relief member is closed by the closing member 600, and a medium is introduced from the medium inlet 110, and the airtightness is detected.

In some embodiments of the present application, please refer to fig. 1-4.

The embodiment of the application provides an air tightness detection device 10, this air tightness detection device 10 includes base 100 and lid piece 200, base 100 is used for supporting the box and seals the box and predetermines ascending one end of orientation, base 100 has medium import 110, medium import 110 is used for letting in the detection medium to the box is inside, lid piece 200 is relative with base 100 in the orientation of predetermineeing and is set up, lid piece 200 is used for optionally lid to fit the box to the other end of sealed box in the orientation of predetermineeing.

The cover 200 has a first position-limiting portion 210, the base 100 has a second position-limiting portion 121, and the first position-limiting portion 210 and the second position-limiting portion 121 are used for preventing the cover 200 and the base 100 from approaching each other in a predetermined direction when abutting against each other. The base 100 is formed with a detection chamber 140, the detection chamber 140 is formed with an opening at an end of the base 100 facing the cover member 200, and the open end of the base 100 is used to support and seal an end of the case in a predetermined direction. The base 100 is provided with a plurality of guides 400 circumferentially spaced apart, and the guides 400 are used to guide one end of the box body in a predetermined direction to one end of the base 100 where an opening is formed.

The base 100 comprises a base 120 and a support 130, the support 130 is surrounded on the base 120, the support 130 and the base 120 jointly define a detection cavity 140, an opening is formed at one end of the support 130, which is away from the base 120 in a preset direction, a diversion trench 122 is formed on the base 120, and the diversion trench 122 is located on the outer side of the support 130. The air tightness detecting device 10 further comprises a filling member 500, wherein the filling member 500 is filled in the detecting cavity 140 to reduce the amount of detecting medium required to be introduced into the detecting cavity 140 and the box body.

The airtightness detection apparatus 10 includes a plurality of pressing mechanisms 300, the plurality of pressing mechanisms 300 are connected to the base 100 in a position-adjustable manner, and the pressing mechanisms 300 are used for pressing the casing to the base 100 or for pressing the cover 200 to the casing. The box has the pressure release part, and gas tightness detection device 10 still includes shutoff piece 600, and shutoff piece 600 is connected with base 100, and shutoff piece 600 is used for shutoff pressure release part.

The base 100 can support and seal one end opening of the case in a predetermined direction, and the cover 200 can selectively seal the other end of the case in the predetermined direction. In the case of a case product having one end open, the opening thereof can be sealed only by the base 100, while in the case of a case semi-product having both ends open, the two openings thereof can be sealed by the base 100 and the lid member 200, respectively. And a detection medium can be introduced into the box body through the medium inlet so as to finish the air tightness detection. The air tightness detection device 10 can be suitable for detecting the air tightness of a box body finished product with an opening at one end and the air tightness of a box body semi-finished product with openings at two ends, and has strong adaptability. Through setting up first spacing portion 210 and second spacing portion 121, can control the volume of pushing down of lid assembly 200, guarantee the uniformity of gas tightness. By providing the guide 400, it is advantageous to ensure accurate placement of the bin on the base 100. By providing the diversion trench 122, foam detection is facilitated. Through setting up shutoff piece 600, guarantee the shutoff to the pressure release part of box, improve the accuracy that the gas tightness detected. By positionally adjustably attaching a plurality of pressing mechanisms 300 to the base 100, the rationality of the pressing points is ensured.

It should be noted that, in the embodiments given in the present application, the embodiments may be combined with each other as long as there is no contradiction.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (15)

1. An airtightness detection apparatus, comprising:

the detection device comprises a base (100) used for supporting a box body and sealing one end of the box body in a preset direction, wherein the base (100) is provided with a medium inlet (110), and the medium inlet (110) is used for introducing a detection medium into the box body;

closing member (200) on the predetermined direction with base (100) set up relatively, closing member (200) are used for optionally covering the box, are in with sealed the box is in the other end on the predetermined direction.

2. The tightness detection device according to claim 1, wherein a side of the cover (200) facing the base (100) is provided with a first seal for sealing the cover (200) and the case.

3. The airtightness detection apparatus according to claim 1, wherein the cover member (200) has a first stopper portion (210), and the base (100) has a second stopper portion (121), and the first stopper portion (210) and the second stopper portion (121) are configured to prevent the cover member (200) and the base (100) from approaching each other in the predetermined direction when abutting against each other.

4. The airtightness detection apparatus according to claim 3, wherein the cover member (200) has a plurality of first position-limiting portions (210) circumferentially spaced apart from each other, the base (100) has a plurality of second position-limiting portions (121), and the second position-limiting portions (121) correspond to the first position-limiting portions (210).

5. The airtightness detection apparatus according to claim 3, wherein a V-shaped protrusion is formed on the first position-limiting portion (210), and a V-shaped groove is formed on the second position-limiting portion (121), and the V-shaped protrusion is adapted to be inserted into and fitted with the V-shaped groove.

6. The airtightness detection apparatus according to claim 1, wherein the base (100) is formed with a detection chamber (140), the detection chamber (140) being formed with an opening at an end of the base (100) facing the cover member (200), the base (100) being formed with the opening at an end for supporting and sealing an end of the casing in the preset direction;

the medium inlet (110) communicates with the detection chamber (140).

7. The airtightness detection apparatus according to claim 6, wherein the base (100) is provided with a plurality of circumferentially spaced guides (400), and the guides (400) are used for guiding one end of the casing in the predetermined direction to one end of the base (100) where the opening is formed.

8. The tightness detection device according to claim 6, wherein a second sealing member (131) is disposed on an end of the base (100) forming the opening, the second sealing member (131) being used to seal the base (100) and the case.

9. The airtightness detection apparatus according to claim 6, wherein the base (100) includes a base body (120) and a support body (130), the support body (130) is enclosed in the base body (120), the support body (130) and the base body (120) jointly define the detection cavity (140), an end of the support body (130) facing away from the base body (120) in the preset direction forms the opening, the base body (120) is formed with a diversion trench (122), and the diversion trench (122) is located outside the support body (130).

10. The airtightness detection apparatus according to claim 9, wherein the base body (120) has a sealing groove;

the air tightness detection device (10) comprises a third sealing element (124), wherein the third sealing element (124) is accommodated in the sealing groove, the third sealing element (124) is positioned between the supporting body (130) and the base body (120), and the third sealing element (124) is used for sealing the base body (120) and the supporting body (130).

11. The airtightness detection apparatus according to claim 6, wherein the airtightness detection apparatus (10) further comprises a filling member (500), and the filling member (500) is filled in the detection chamber (140) to reduce the amount of detection medium to be introduced into the detection chamber (140) and the interior of the housing.

12. The tightness detection device according to claim 11, wherein said filler (500) protrudes beyond said base (100) so that said filler (500) can protrude inside said case.

13. The tightness detection device according to claim 1, characterized in that the tightness detection device (10) comprises a plurality of pressing mechanisms (300), the plurality of pressing mechanisms (300) being connected to the base (100) in a position-adjustable manner, the pressing mechanisms (300) being adapted to press the case against the base (100) or to press the closure (200) against the case.

14. The airtightness detection apparatus according to claim 13, wherein the base (100) includes a base main body and a table (150), the table (150) has a plurality of through holes (151) uniformly formed therein, the number of the through holes (151) is greater than that of the pressing mechanisms (300), and the pressing mechanisms (300) are selectively connected to the table (150) through the through holes (151);

the base main body is connected to the workbench (150), the base main body is used for supporting the box body and sealing one end of the box body in a preset direction, and the medium inlet (110) is arranged on the base main body.

15. The airtightness detection apparatus according to claim 1, wherein the case has a pressure relief part, and the airtightness detection apparatus (10) further comprises a sealing member (600), the sealing member (600) being connected to the base (100), the sealing member (600) being configured to seal the pressure relief part.

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