CN219391259U

CN219391259U - Helium detection device

Info

Publication number: CN219391259U
Application number: CN202223533342.9U
Authority: CN
Inventors: 陈海峰
Original assignee: Suzhou Zhongke Ruilong Technology Co ltd
Current assignee: Suzhou Zhongke Ruilong Technology Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-07-21
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a helium detection device, which comprises: the base (1) comprises a first end face (13), and an annular groove (14) is formed in the first end face (13); the cover body (2) is connected with the base (1) and comprises a second end face (23) which is opposite to the first end face (13); the first sealing ring (4) comprises a first ring body (41) and a second ring body (42) connected with the first ring body (41), the section of the first ring body (41) is rectangular and arranged in the annular groove (14), and the second ring body (42) is partially arranged outside the annular groove (14) and is abutted to the second end face (23). The helium detection device disclosed by the utility model has better sealing performance.

Description

Helium detection device

Technical Field

The utility model relates to the technical field of detection, in particular to a helium detection device.

Background

After the battery case is welded, a leak welding test is required.

The existing helium detection fixture, such as the Chinese patent with the application number of 202210648537.3, discloses a battery shell welding leakage testing system, products in a plurality of sets of testing fixtures can be tested respectively through one set of helium detection instrument, the utilization rate of the helium detection instrument is improved, and the cost is reduced.

In the technical field of helium detection, the sealing performance of the device has a great influence on a detection result, in the prior art, as shown in fig. 1, a sealing ring with a circular cross section is generally adopted between a lower jig 1' and an upper jig 2', the sealing ring is generally made of rubber, an injection mold is adopted for molding, and in the molding process, a slight flash 43' is difficult to avoid at the closing positions of an upper mold and a lower mold of the mold. When the sealing ring is plugged into the groove 14' of the jig, the position of the burr 43' in the jig is often uncontrollable due to the cross-sectional shape of the sealing ring, as shown in fig. 2, the position of the burr may be in the groove 14', as shown in fig. 3, or may be outside the groove 14', when the lower jig 1' is pressed and sealed with the upper jig 2', the sealing ring 4' may generate uneven stress, which affects the sealing performance of the jig, thereby leading to unstable helium detection result and affecting the detection efficiency.

Accordingly, there is a need for an improvement over the prior art to overcome the deficiencies described in the prior art.

Disclosure of Invention

The utility model aims to provide a helium detection device which has better sealing performance.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a helium testing apparatus comprising:

the base comprises a first end face, and an annular groove is formed in the first end face;

the cover body is connected with the base and comprises a second end face which is opposite to the first end face;

the first sealing ring comprises a first ring body and a second ring body connected with the first ring body, the section of the first ring body is rectangular and arranged in the annular groove, and the second ring body is partially arranged outside the annular groove and is abutted to the second end face.

Preferably, the joint of the first ring body and the second ring body is outwards extended with a die clamping burr, and the die clamping burr is arranged in the annular groove.

Preferably, the minimum width of the first ring body is greater than the maximum width of the second ring body.

Preferably, the section of the second ring body is trapezoid or semicircular.

Preferably, the first ring body is provided with a chamfer at a connection with the second ring body.

Preferably, the shape of the first ring body is matched with the shape of the annular groove.

Preferably, a notch is arranged on the first end face, and the notch is communicated with the annular groove.

Preferably, a containing cavity is formed between the base and the cover body, a boss for placing a shell component is arranged in the containing cavity, the shell component is placed on the boss to divide the containing cavity into a first cavity and a second cavity, and the first cavity and the second cavity are respectively connected with a helium detector component.

Preferably, the helium testing device further comprises a sealing mechanism connected with the shell assembly, and the sealing mechanism seals and isolates the first cavity and the second cavity.

Preferably, a pressing block is arranged in the second cavity, and the pressing block is abutted against the shell assembly.

Compared with the prior art, the utility model has the following advantages:

according to the helium detection device, the sealing ring composed of the first ring body and the second ring body is adopted, the cross section of the first ring body is rectangular, the first ring body is arranged in the annular groove of the base to play a limiting role, the installation mode and the installation position uniqueness of the sealing ring are ensured, the second ring body arranged outside the annular groove is in butt joint and sealing with the cover body, and the sealing performance of the helium detection device is greatly improved.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, proportional sizes, and the like of the respective components in the drawings are merely illustrative for aiding in understanding the present utility model, and are not particularly limited. Those skilled in the art with access to the teachings of the present utility model can select a variety of possible shapes and scale sizes to practice the present utility model as the case may be. In the drawings:

FIG. 1 is a cross-sectional view of a prior art seal ring;

FIG. 2 is a schematic illustration of a prior art seal ring assembly;

FIG. 3 is a schematic illustration of another prior art seal ring assembly;

FIG. 4 is a schematic view of the seal ring of the present utility model;

FIG. 5 is a top view of the seal ring of FIG. 4;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

FIG. 7 is an enlarged schematic view of portion a of FIG. 6;

FIG. 8 is a cross-sectional view of a seal ring of the present utility model;

FIG. 9 is a top view of a helium testing apparatus according to the present utility model;

FIG. 10 is a cross-sectional view B-B of FIG. 9;

FIG. 11 is an enlarged schematic view of portion b of FIG. 10;

FIG. 12 is a schematic view of the assembly of the seal ring and the base of the present utility model;

FIG. 13 is a schematic view of the structure of the housing assembly of the present utility model;

fig. 14 is experimental data for 100 product helium test runs of the seal ring of the present utility model and the seal ring of the prior art under equivalent conditions.

Detailed Description

In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, shall fall within the scope of the utility model.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 4 to 13, a helium test apparatus according to a preferred embodiment of the present utility model includes a base 1, a cover 2, a helium test instrument assembly, and a sealing mechanism 3.

The base 1 is in sealing connection with the cover body 2 through a first sealing ring 4. As shown in fig. 9 to 11 in detail, the base 1 includes a first base 11 and a first side 12 extending outwardly from a free end of the first base 11, and preferably, the first base 11 is disposed perpendicularly to the first side 12. The cover 2 includes a second base 21 and a second side 22 extending outwardly from a free end of the second base 21, and preferably the second base 21 is disposed perpendicular to the second side 22. The first side portion 12 includes a first end face 13 disposed away from the first base portion 11, the second side portion 22 includes a second end face 23 disposed away from the second base portion 21, and the first end face 13 and the second end face 23 are disposed opposite each other. The first end face 13 is provided with an annular groove 14, and the first sealing ring 4 is partially arranged in the annular groove 14. As shown in fig. 4 to 7, the first seal ring 4 includes a first ring body 41 and a second ring body 42 connected to the first ring body 41, the first ring body 41 has a rectangular cross section and is disposed in the annular groove 14, the second ring body 42 is partially disposed outside the annular groove 14, and the second ring body 42 abuts against the second end face 23 of the cover body 2. The first ring body 41 and the second ring body 42 are formed by die closing injection molding, so that the die closing flash 43 outwards extends at the joint of the first ring body 41 and the second ring body 42, and the die closing flash 43 is always positioned in the annular groove 14 when the first sealing ring 4 is installed because the section of the first ring body 41 is rectangular, so that the exposure phenomenon is avoided, and the tightness between the base 1 and the cover 2 is further improved. Compared with the conventional circular sealing ring, 100 times of repeated helium detection tests are performed under the same condition, and as shown in fig. 14, 100 times of repeated data of the sealing ring adopted in the utility model are more stable, and the sealing performance is better.

Further, the minimum width of the first ring body 41 is larger than the maximum width of the second ring body 42. As shown in fig. 8, the minimum width D1 of the first ring body 41 is greater than the maximum width D2 of the second ring body 42, and when the cover body 2 is connected to the base 1, the cover body 2 presses the second ring body 42 to deform, and a space for the deformation of the second ring body 42 exists around the second ring body 42. Preferably, the second ring 42 has a trapezoid or semicircle cross-section, as shown in the figure. Further, the first ring body 41 is provided with a chamfer 44 at the connection with the second ring body 42, which facilitates the assembly of the first sealing ring 4.

In order to avoid the risk of the first sealing ring 4 being pulled down due to the pulling of the first sealing ring 4 during assembly, in this embodiment, the shape of the first ring body 41 is adapted to the shape of the annular groove 14, as shown in fig. 12, in this embodiment, the overall shape of the annular groove 14 is substantially rectangular, so the overall shape of the first sealing ring 4 is correspondingly set to be rectangular, so that the installation of the first sealing ring 4 is facilitated. Further, in order to facilitate the removal of the first sealing ring 4, a notch 15 is provided on the first end surface 13, which communicates with the annular groove 14, preferably, the notch 15 is provided at a corner of the annular groove 14.

As shown in fig. 10, a receiving cavity is formed between the base 1 and the cover 2, a boss 16 for placing the housing assembly 6 is provided in the receiving cavity, and the housing assembly 6 is placed on the boss 16 to divide the receiving cavity into a first cavity 51 and a second cavity 52. Specifically, as shown in fig. 13, the housing assembly 6 includes a bottom wall 61, a side wall 62 connected to the bottom wall 61, and a flange 63 connected to the side wall 62, the bottom wall 61 and the flange 63 are disposed in parallel, and the side wall 62 is provided with a liquid injection hole 64 and a positive plate connector 65. When the housing assembly 6 is placed on the boss 16, an end of the bottom wall 61 adjacent to the side wall 62 contacts the upper surface of the boss 16, the flange 63 contacts an end of the first base 11 adjacent to the first side 12 of the base 1, and the second seal ring 7 is provided between the flange 63 and the first base 11. The first cavity 51 is formed between one end of the bottom wall 61 near the side wall 62, and one end of the first base 11 near the first side 12, and a portion of the accommodating cavity other than the first cavity 51 is defined as the second cavity 52. The first cavity 51 and the second cavity 52 are respectively connected with helium detector components, which are not shown, and the helium detector components can respectively realize the functions of vacuumizing, detecting air pressure change, filling helium, detecting helium concentration change, pumping helium, filling nitrogen for purging and the like for the first cavity 51 and the second cavity 52. Further, in order to ensure the sealing connection between the flange 63 and the first base 11, the second cavity 52 is provided with a pressing block 8, the pressing block 8 is abutted against the housing assembly 6, and the sealing performance between the flange 63 and the first base 11 is enhanced by an external force, so that the detection effect is ensured.

As shown in fig. 12, the pouring hole 64 is sealed by the sealing mechanism 3. Specifically, the sealing mechanism 3 includes a sealing rod 31 movably coupled to the base 1, and the sealing rod 31 can open or close the pouring hole 64. Preferably, the sealing rod 31 is reciprocally moved by a mechanical drive, for example by a linear electric slide. When the sealing rod 31 moves to the direction close to the liquid injection hole 64 until the liquid injection hole 64 is blocked, the liquid injection hole 64 is closed, and the first cavity 51 and the second cavity 52 are sealed and isolated; when the seal rod 31 moves in a direction away from the pouring orifice 64, the pouring orifice 64 opens.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but instead should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated herein by reference for the purpose of completeness. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to forego such subject matter, nor should the applicant be deemed to have such subject matter not considered to be part of the disclosed subject matter.

Claims

1. A helium testing apparatus, comprising:

the base (1) comprises a first end face (13), and an annular groove (14) is formed in the first end face (13);

the cover body (2) is connected with the base (1) and comprises a second end face (23) which is opposite to the first end face (13);

the first sealing ring (4) comprises a first ring body (41) and a second ring body (42) connected with the first ring body (41), the section of the first ring body (41) is rectangular and arranged in the annular groove (14), and the second ring body (42) is partially arranged outside the annular groove (14) and is abutted to the second end face (23).

2. Helium detection unit according to claim 1, characterized in that the junction of the first ring body (41) and the second ring body (42) is outwardly extended with a clamping burr (43), said clamping burr (43) being arranged in the annular groove (14).

3. Helium detection unit according to claim 1, characterized in that the minimum width of the first ring (41) is greater than the maximum width of the second ring (42).

4. A helium detection unit according to claim 3, characterised in that said second ring (42) has a trapezoidal or semicircular cross section.

5. Helium detection device according to claim 1, characterized in that the first ring (41) is provided with a chamfer (44) at the connection with the second ring (42).

6. Helium detection unit according to claim 1, characterized in that the shape of the first ring (41) is adapted to the shape of the annular groove (14).

7. Helium detection device according to claim 1, characterized in that the first end face (13) is provided with a notch (15), which notch (15) communicates with the annular groove (14).

8. Helium detector according to any one of claims 1-7, characterized in that a receiving cavity is formed between the base (1) and the cover (2), a boss (16) for placing a housing assembly (6) is arranged in the receiving cavity, the housing assembly (6) is placed on the boss (16) to divide the receiving cavity into a first cavity (51) and a second cavity (52), and the first cavity (51) and the second cavity (52) are respectively connected with a helium detector assembly.

9. Helium detection device according to claim 8, further comprising a sealing mechanism (3) connected to the housing assembly (6), the sealing mechanism (3) sealing off the first and second cavities (51, 52).

10. Helium detection unit according to claim 8, characterized in that a pressure piece (8) is arranged in the second chamber (52), which pressure piece (8) is in abutment with the housing assembly (6).