CN215414242U - Helium injection device and helium detection equipment - Google Patents
Helium injection device and helium detection equipment Download PDFInfo
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- CN215414242U CN215414242U CN202121670147.3U CN202121670147U CN215414242U CN 215414242 U CN215414242 U CN 215414242U CN 202121670147 U CN202121670147 U CN 202121670147U CN 215414242 U CN215414242 U CN 215414242U
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Abstract
The utility model relates to a helium injection device and helium detection equipment, wherein the helium injection device comprises a helium injection mechanism and a four-position two-way valve, the four-position two-way valve is provided with a gas inlet and four gas outlets, and the gas inlet can be alternatively communicated with the four gas outlets; the four air outlets are respectively connected with the helium filling device, the helium returning device, the vacuum pumping device and the vacuum breaking device. Therefore, the helium filling device, the helium returning device, the vacuumizing device and the vacuum breaking device can be respectively communicated with or disconnected from the helium filling pipe by switching the states of the four-position two-way valve, so that the operations of helium filling, helium returning, vacuumizing and vacuum breaking are realized, and pipelines can be obviously reduced. And moreover, the isolating valve is directly communicated with the helium injection pipe, so that pipelines can be further reduced. The reduction of the pipeline structure can simplify the structure of the helium filling device and facilitate maintenance. More importantly, less pipeline structures can also obviously reduce the adsorption of helium, so that the helium detection precision can be improved.
Description
Technical Field
The utility model relates to the technical field of airtightness detection, in particular to a helium injection device and helium detection equipment.
Background
In the processing of various products, such as batteries, airtightness detection is often required, and helium detection is a common means for airtightness detection. Taking a square-shell battery as an example, during helium detection, operations of charging helium gas into the battery in the vacuum cavity, recovering the helium gas, vacuumizing and breaking vacuum are required. In order to adapt to the multi-step operation, the conventional helium detection equipment needs to be provided with a complex pipeline to realize connection and control on-off. The complicated pipeline results in a complicated structure, and a large amount of helium is easily adsorbed in the redundant pipeline, so that the helium detection precision is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a helium injection device and a helium testing apparatus capable of improving the helium testing accuracy.
A helium injection apparatus comprising:
the helium injection mechanism (100) comprises a helium injection pipe (110) and a blocking valve (120), wherein an injection port is formed in one end of the helium injection pipe (110), and the blocking valve (120) is fixed at one end, far away from the injection port, of the helium injection pipe (110) and communicated with the helium injection pipe (110); and
the four-position two-way valve (200) is provided with an air inlet (210) and four air outlets (220), and the air inlet (210) can be alternatively communicated with the four air outlets (220);
the gas inlet (210) is connected with the helium injection pipe (110) through the isolating valve (120), and the four gas outlets (220) are respectively used for being connected with a helium charging device, a helium returning device, a vacuum pumping device and a vacuum breaking device.
In one embodiment, the helium injection mechanism (100) comprises a fixed seat (130), the helium injection pipe (110) is mounted on the fixed seat (130), and the helium injection pipe (110) can extend and retract along the longitudinal axis direction of the injection port relative to the fixed seat (130).
In one embodiment, the helium injection mechanism (100) comprises a mounting plate (140) and an elastic member (150), the mounting plate (140) is slidably mounted on the fixing seat (130) along the longitudinal axis direction of the injection port, the helium injection pipe (110) is fixedly arranged on the mounting plate (140), and the elastic member (150) provides an elastic force to the mounting plate (140) away from the fixing seat (130) along the longitudinal axis direction of the injection port.
In one embodiment, the elastic member (150) is a compression spring, and the pre-tightening amount of the compression spring is adjustable.
In one embodiment, the helium injection pipe (110) is a metal tubular structure.
In one embodiment, the helium injection mechanism (100) further comprises a pressure gauge (160) and a three-way block (170), and the helium injection pipe (110), the blocking valve (120) and the pressure gauge (160) are respectively communicated with three ports of the three-way block (170).
In one embodiment, the four-position two-way valve is a solenoid valve.
In one embodiment, the helium injection mechanisms (100) are multiple, two adjacent helium injection mechanisms (100) are communicated through the isolating valve (120), and the gas inlet (210) is connected with the isolating valve (120) of one helium injection mechanism (100).
In one embodiment, the device further comprises a gas receiving block (300), wherein the gas receiving block (300) is provided with a first gas joint (310), a second gas joint (320) and a third gas joint, the third gas joint is connected with the isolating valve (120) of one helium injection mechanism (100), and the first gas joint (310) and the second gas joint (320) are respectively connected with the gas inlet (210) and the isolating valve (120) of the adjacent helium injection mechanism (100).
A helium detection device comprises a helium filling device, a helium returning device, a vacuumizing device and a vacuum breaking device which are all arranged in the preferred embodiment, wherein the four air outlets (220) are respectively connected with the helium filling device, the helium returning device, the vacuumizing device and the vacuum breaking device.
The helium filling device and the helium detection equipment adopt the four-position two-way valve to connect the helium filling mechanism with the helium filling device, the helium returning device, the vacuumizing device and the vacuum breaking device, and realize helium filling, helium returning, vacuumizing and vacuum breaking operations by switching the states of the four-position two-way valve, so that pipelines can be obviously reduced. And moreover, the isolating valve is directly communicated with the helium injection pipe, so that pipelines can be further reduced. The reduction of the pipeline structure can simplify the structure of the helium filling device and facilitate maintenance. More importantly, less pipeline structures can also obviously reduce the adsorption of helium, so that the helium detection precision can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a right side view of a helium injection apparatus in accordance with a preferred embodiment of the present invention;
FIG. 2 is a front view of a helium injection mechanism of the helium injection apparatus shown in FIG. 1;
fig. 3 is a front view of a helium injection mechanism in another embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "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," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to FIG. 1, the present invention provides a helium testing apparatus (not shown) and a helium injection apparatus 10. The helium detecting device comprises a helium filling device 10 (not shown), a helium returning device (not shown), a vacuum pumping device (not shown) and a vacuum breaking device (not shown).
The vacuumizing device is used for vacuumizing a vacuum box body for loading the workpiece to be detected so as to form a vacuum environment; helium is provided by a helium filling device and is filled into a workpiece to be detected, such as a square-shell battery, in a vacuum box body through a helium filling device 10; after the pressure is maintained for a preset time, the helium returning device recovers helium in the workpiece, and the airtightness of the workpiece is detected by calculating the concentration of the helium in the vacuum box; after the detection is finished, the vacuum breaking device enables the air pressure in the vacuum box body to recover. In the present embodiment, the vacuum breaking device is a silencer.
Referring also to fig. 2, the helium injection apparatus 10 of the preferred embodiment of the present invention includes a helium injection mechanism 100 and a four-position two-way valve 200. Wherein:
the helium injection mechanism 100 includes a helium injection pipe 110 and a blocking valve 120. The helium injection tube 110 is generally a strip-shaped tubular structure with openings at both ends. One end of the helium injection pipe 110 is provided with an injection port (not shown), and the injection port can be in butt joint with a helium injection port of a workpiece to be detected. The isolating valve 120 is fixed at one end of the helium injection pipe 110 far away from the injection port and is communicated with the helium injection pipe 110. When helium detection is performed on a workpiece to be detected, helium gas provided by the helium injection device enters the helium injection pipe 110 through the isolation valve 120, and is injected into the workpiece to be detected through the injection port of the helium injection pipe 110. Then, the block valve 120 is closed, so that the pressure of the workpiece to be detected, into which helium gas is injected, can be maintained.
In order to improve the sealing performance between the filling opening and the helium filling opening, a helium filling sealing nozzle 20 is further mounted on the filling opening, and the helium filling sealing nozzle 20 can be a member formed by flexible materials such as rubber, silica gel and the like. When the filling opening is in butt joint with the helium filling opening, the helium filling sealing nozzle 20 can be elastically deformed by extrusion to fill the gap between the filling opening and the helium filling opening, so that a better sealing effect is achieved.
Specifically, in the present embodiment, the helium injection pipe 110 is a metal pipe structure. The helium injection tube 110 may be formed of a metal material such as stainless steel. On the one hand, the metal tubular structure has stronger mechanical strength, and can avoid the deformation of the helium injection pipe 110 in the helium injection process. On the other hand, the metal tubular structure can also effectively reduce the phenomena of helium absorption and helium storage in the helium injection pipe 110, thereby being beneficial to improving the precision of helium detection.
Specifically, in this embodiment, the helium injection mechanism 100 further includes a pressure gauge 160 and a three-way block 170, and the helium injection pipe 110, the block valve 120 and the pressure gauge 160 are respectively communicated with three ports of the three-way block 170.
The three-way block 170 is a block structure having three ports and a hollow interior, and is generally formed of metal. The pressure gauge 160 can detect the air pressure in the workpiece to be detected, thereby conveniently controlling the helium amount filled in the workpiece to be detected. Moreover, the helium injection pipe 110, the isolating valve 120 and the pressure gauge 160 are directly connected through the three-way block 170, and no additional pipeline needs to be arranged between the two for communication, so that the adsorption of helium can be further reduced.
The four-position two-way valve 200 has an air inlet 210 and four air outlets 220, and the air inlet 210 can be alternatively communicated with the four air outlets 220. Specifically, the four-position two-way valve 200 has four switching states, and in a specific switching state, one of the air outlets 220 corresponding to the air inlet 210 is turned on and is isolated from the other air outlets 220. Further, the four-position two-way valve 200 is reversely connected, the gas inlet 210 is connected with the helium injection pipe 110 through the isolating valve 120, and the four gas outlets 220 are respectively connected with the helium charging device, the helium returning device, the vacuum pumping device and the vacuum breaking device.
The helium testing apparatus generally comprises a top plate 30 for supporting, and the four-position two-way valve 200 and the helium injection mechanism 100 can be fixed on the surface of the top plate 30. Wherein, the gas inlet 210 of the four-position two-way valve 200 may be connected to the block valve 120 through a pipe (not shown).
During helium detection, helium filling, helium returning, vacuum pumping and vacuum breaking operations can be realized by switching the state of the four-position two-way valve 200, so that pipelines can be obviously reduced. Furthermore, the block valve 120 is in direct communication with the helium injection pipe 110, further reducing piping. The reduction of pipeline structure can reduce the absorption to helium to can promote the precision that the helium detected.
Specifically, in the present embodiment, the four-position two-way valve 200 is a solenoid valve. Therefore, the switch state of the four-bit two-way valve 200 can be switched by inputting different electric signals, so that the response is quick and the switching is convenient. Obviously, the four-position two-way valve 200 can also realize the switching of the switch states by means of mechanical control.
Referring to fig. 1 again, in the present embodiment, the helium injection mechanism 100 includes a fixing base 130, the helium injection pipe 110 is mounted on the fixing base 130, and the helium injection pipe 110 is capable of extending and contracting along a longitudinal axis direction of the injection port relative to the fixing base 130.
Specifically, the fixing base 130 is used for supporting and can be fixedly mounted on the top plate 30 of the helium testing device. When the helium testing apparatus is in operation, the helium injection tube 110 extends generally vertically, so the longitudinal axis of the injection port is in the up-down direction as shown in FIG. 1.
When helium detection is carried out, the vacuum box body positioned at the lower part of the helium injection mechanism 100 is lifted upwards until a helium injection port of a workpiece to be detected in the vacuum box body is in butt joint with an injection port of the helium injection pipe 110. Because the helium injection pipe 110 can be extended and retracted. Therefore, when the helium injection port abuts against the injection port, the helium injection tube 110 is forced to retract, thereby avoiding damage to the helium injection tube 110 and the workpiece to be tested due to hard contact between the helium injection tube 110 and the helium injection port.
Further, in this embodiment, the helium injection mechanism 100 includes a mounting plate 140 and an elastic member 150, the mounting plate 140 is slidably mounted on the fixing base 130 along the longitudinal axis direction of the injection port, the helium injection pipe 110 is fixedly disposed on the mounting plate 140, and the longitudinal axis direction of the injection port of the elastic member 150 provides an elastic force to the mounting plate 140 away from the fixing base 130.
Specifically, the mounting plate 140 is slidably mounted to the fixing base 130 by means of a guide rail and a slider, and the guide rail extends in the up-down direction shown in fig. 1. Moreover, the elastic force of the elastic member 150 can make the helium injection port and the injection port effectively close to each other, thereby further improving the sealing effect therebetween.
Obviously, in other embodiments, the helium injection tube 110 can be elastically stretched in other ways. For example, a corrugated section capable of elastic deformation is provided on the helium injection pipe 110. Or, an air cylinder is arranged and fixed on the fixing seat 130, and the helium injection pipe 110 is fixed at the driving end of the air cylinder, so that the helium injection pipe 110 can extend and contract relative to the fixing seat 130.
Specifically, in the present embodiment, the elastic member 150 is a compression spring, and the pre-tightening amount of the compression spring is adjustable. Specifically, the compression spring is clamped between the fixing base 130 and the mounting plate 140. When the helium injection port abuts the injection port, the helium injection tube 110 is forced to retract, thereby further compressing the compression spring. By adjusting the pre-tightening amount of the compression spring, the elastic restoring force provided by the elastic member 150 can be adjusted, so that the tightness between the helium filling opening and the filling opening can be adjusted as required.
In the present embodiment, there are a plurality of helium injection mechanisms 100, two adjacent helium injection mechanisms 100 communicate with each other through a block valve 120, and the gas inlet 210 is connected to the block valve 120 of one of the helium injection mechanisms 100.
Specifically, the helium gas provided by the helium filling device may be distributed to the plurality of helium injection mechanisms 100 through a four-position two-way valve 200, and the helium gas recovered by the plurality of helium injection mechanisms 100 may be collected to the helium recovery device through the four-position two-way valve 200. Therefore, the working process of the helium injection mechanisms 100 can be controlled by arranging the four-position two-way valve 200, so that helium detection can be performed on a plurality of workpieces to be detected at the same time.
Further, in the present embodiment, the helium injection apparatus 10 further includes a gas receiving block 300, the gas receiving block 300 has a first gas joint 310, a second gas joint 320 and a third gas joint (not shown), the third gas joint is connected to the block valve 120 of one of the helium injection mechanisms 100, and the first gas joint 310 and the second gas joint 320 are respectively connected to the gas inlet 210 and the block valve 120 of the adjacent helium injection mechanism 100.
The air-receiving block 300 may be a hollow structure formed of metal. Specifically, the block valve 120 itself has several joints (not shown), and the gas receiving block 300 can be in butt joint with any joint on the block valve 120, so as to expand the number of ports of the block valve 120, and conveniently connect the adjacent helium injection mechanisms 100 and 100 with the four-position two-way valve 200.
As shown in fig. 3, for embodiments in which the helium filling apparatus 10 includes one helium filling mechanism 100, the gas block 300 may be omitted. At this time, the air inlet 210 of the four-position two-way valve 200 may be directly connected to a joint provided by the block valve 120 itself.
The helium filling device 10 and the helium detection equipment adopt the four-position two-way valve 200 to connect the helium filling mechanism 100 with the helium filling device, the helium returning device, the vacuumizing device and the vacuum breaking device, and realize the operations of helium filling, helium returning, vacuumizing and vacuum breaking by switching the state of the four-position two-way valve 200, so that pipelines can be obviously reduced. Furthermore, the block valve 120 is in direct communication with the helium injection pipe 110, further reducing piping. The reduction of the pipeline structure can simplify the structure of the helium filling device and facilitate maintenance. More importantly, less pipeline structures can also obviously reduce the adsorption of helium, so that the helium detection precision can be improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A helium injection apparatus, comprising:
the helium injection mechanism (100) comprises a helium injection pipe (110) and a blocking valve (120), wherein an injection port is formed in one end of the helium injection pipe (110), and the blocking valve (120) is fixed at one end, far away from the injection port, of the helium injection pipe (110) and communicated with the helium injection pipe (110); and
the four-position two-way valve (200) is provided with an air inlet (210) and four air outlets (220), and the air inlet (210) can be alternatively communicated with the four air outlets (220);
the gas inlet (210) is connected with the helium injection pipe (110) through the isolating valve (120), and the four gas outlets (220) are respectively used for being connected with a helium charging device, a helium returning device, a vacuum pumping device and a vacuum breaking device.
2. The helium injection apparatus according to claim 1, wherein the helium injection mechanism (100) comprises a fixed seat (130), the helium injection pipe (110) is mounted on the fixed seat (130), and the helium injection pipe (110) is capable of extending and contracting along a longitudinal axis direction of the injection port relative to the fixed seat (130).
3. The helium injection apparatus according to claim 2, wherein the helium injection mechanism (100) comprises a mounting plate (140) and a resilient member (150), the mounting plate (140) is slidably mounted on the fixing base (130) along the longitudinal axis direction of the injection port, the helium injection pipe (110) is fixedly arranged on the mounting plate (140), and the resilient member (150) provides the mounting plate (140) with a resilient force away from the fixing base (130) along the longitudinal axis direction of the injection port.
4. The helium injection device according to claim 3, wherein the elastic member (150) is a compression spring, and the pre-tightening amount of the compression spring is adjustable.
5. The helium injection apparatus as claimed in claim 1, wherein the helium injection pipe (110) is a metal tubular structure.
6. The helium injection device according to claim 1, wherein the helium injection mechanism (100) further comprises a pressure gauge (160) and a three-way block (170), and the helium injection pipe (110), the block valve (120) and the pressure gauge (160) are respectively communicated with three ports of the three-way block (170).
7. The helium injection apparatus of claim 1, wherein the four-position, two-way valve is a solenoid valve.
8. The helium injection device according to claim 1, wherein the helium injection mechanism (100) is provided in plurality, two adjacent helium injection mechanisms (100) are communicated through the block valve (120), and the gas inlet (210) is connected with the block valve (120) of one helium injection mechanism (100).
9. The helium injection apparatus according to claim 8, further comprising a gas receiving block (300), wherein the gas receiving block (300) has a first gas joint (310), a second gas joint (320) and a third gas joint, the third gas joint is connected with the block valve (120) of one of the helium injection mechanisms (100), and the first gas joint (310) and the second gas joint (320) are respectively connected with the gas inlet (210) and the block valve (120) of the adjacent helium injection mechanism (100).
10. Helium testing equipment, comprising the helium filling device, the helium returning device, the vacuum pumping device and the vacuum breaking device as claimed in any one of claims 1 to 9, wherein the four gas outlets (220) are respectively connected with the helium filling device, the helium returning device, the vacuum pumping device and the vacuum breaking device.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121670147.3U CN215414242U (en) | 2021-07-21 | 2021-07-21 | Helium injection device and helium detection equipment |
| PCT/CN2021/140324 WO2023000609A1 (en) | 2021-07-21 | 2021-12-22 | Helium detection apparatus and helium detection device |
| JP2023503091A JP7450110B2 (en) | 2021-07-21 | 2021-12-22 | Helium testing equipment and helium testing equipment |
| EP21950847.0A EP4177586A4 (en) | 2021-07-21 | 2021-12-22 | Helium detection apparatus and helium detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121670147.3U CN215414242U (en) | 2021-07-21 | 2021-07-21 | Helium injection device and helium detection equipment |
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| CN215414242U true CN215414242U (en) | 2022-01-04 |
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| CN202121670147.3U Active CN215414242U (en) | 2021-07-21 | 2021-07-21 | Helium injection device and helium detection equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000609A1 (en) * | 2021-07-21 | 2023-01-26 | 无锡先导智能装备股份有限公司 | Helium detection apparatus and helium detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000609A1 (en) * | 2021-07-21 | 2023-01-26 | 无锡先导智能装备股份有限公司 | Helium detection apparatus and helium detection device |
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