Integrated high-vacuum helium detection valve seat

Abstract

The utility model discloses an integrated high vacuum helium detection valve seat, which comprises an integrated valve seat, two first baffle valves, a second baffle valve, a third baffle valve and a leakage marking assembly, the two first baffle valves, the second baffle valve, the third baffle valve and the leakage marking assembly are arranged on the integrated valve seat, a main channel, a helium detection channel, a vacuum channel, a leakage marking channel and two cavity channels are arranged in the integrated valve seat, and the helium detection channel, the vacuum channel, the leakage marking channel and the two cavity channels are sequentially communicated with the main channel. The helium detection channel is communicated with a helium detection pipeline, the vacuum channel is communicated with a vacuumizing pipe, the leakage marking channel is communicated with the leakage marking assembly, the two cavity channels are respectively communicated with two independent battery cavities, and the two first baffle valves are respectively used for controlling the on-off of the two cavity channels. The second baffle valve is used for controlling the on-off of the helium detection channel, and the third baffle valve is used for controlling the on-off between the main channel and the vacuum channel. According to the utility model, the arrangement of pipelines can be simplified, the overall structure is compact, the equipment cost is reduced, and each cavity can be independently detected.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to an integrated high-vacuum helium detection valve seat. Background Art

[0002] In the process of battery production, in order to improve the safety performance of the battery, it is necessary to perform airtightness detection on the battery. Among them, helium detection equipment is usually used to detect the airtightness of the battery. In some double-chamber batteries, it is necessary to separately perform airtightness detection on two independent battery chambers.

[0003] However, the existing helium detection equipment needs to be provided with two valve seats, and the two valve seats are respectively connected to two independent battery chambers. Different pipelines and control valves are connected to each valve seat to control the gas, so as to realize the commutation and on-off of different gas paths. As a result, the pipeline layout is complex, the occupied space is large, and the equipment cost is high. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an integrated high-vacuum helium detection valve seat, which can integrate the components of different gas paths on an integrated valve seat, simplify the pipeline layout, make the overall structure compact, reduce the equipment cost, and can realize the separate detection of each cavity.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] An integrated high-vacuum helium detection valve seat, comprising:

[0007] An integrated valve seat, internally provided with a main channel, a helium detection channel, a vacuum channel, a calibration leak channel and two cavity channels that are sequentially communicated with the main channel. One end of each of the two cavity channels penetrates through one side of the integrated valve seat and is respectively communicated with two independent battery cavities. Two first baffle valves are arranged on the integrated valve seat, and the two first baffle valves are respectively used to control the on-off of the two cavity channels;

[0008] A helium detection component, comprising a helium detection pipeline and a second baffle valve. One end of the helium detection pipeline penetrates through one side of the integrated valve seat, and the helium detection pipeline is communicated with one end of the helium detection channel. The second baffle valve is used to control the on-off of the helium detection channel;

[0009] A vacuum pumping component, comprising a third baffle valve and two vacuum pumping pipes. Both ends of the vacuum channel penetrate through both sides of the integrated valve seat and are communicated with the two vacuum pumping pipes. The third baffle valve is used to control the on-off between the main channel and the vacuum channel;

[0010] A calibration leak component, arranged on the integrated valve seat. One end of the calibration leak channel penetrates through one side of the integrated valve seat and is communicated with the calibration leak component.

[0011] As a further improvement of the above technical solution, the first baffle valve includes a driving member and a valve core. The driving member is used to drive the valve core to conduct or block the cavity channel, and the integrated valve seat is provided with a valve cavity for accommodating the movement of the valve core.

[0012] As a further improvement of the above technical solution, the valve core is of a cylindrical structure, the valve cavity and the cavity channel are both of a circular hole structure. One end of the cavity channel is coaxially arranged with the valve cavity, one end of the cavity channel is located at the bottom of the valve cavity, the diameter of the valve core is larger than the diameter of the cavity channel, and the driving member is used to drive the valve core to approach or move away from one end of the cavity channel.

[0013] As a further improvement of the above technical solution, an end face sealing ring is arranged at one end of the valve core close to the cavity channel.

[0014] As a further improvement of the above technical solution, the driving member is a cylinder, the cylinder is installed on the side of the integrated valve seat, and the valve core is arranged at the end of the telescopic rod of the cylinder.

[0015] As a further improvement of the above technical solution, a first sealing groove is arranged between the cylinder and the integrated valve seat, and a first sealing ring is installed in the first sealing groove.

[0016] As a further improvement of the above technical solution, the structures of the second baffle valve and the third baffle valve are the same as those of the first baffle valve.

[0017] As a further improvement of the above technical solution, branch channels are respectively arranged between the main channel and the two cavity channels. The two branch channels respectively penetrate through both sides of the integrated valve seat and are respectively communicated with a vacuum gauge and a nitrogen cleaning assembly, and the valve cavity penetrates through the branch channels.

[0018] As a further improvement of the above technical solution, the standard leakage component includes a connecting seat, a high-vacuum solenoid valve and an external standard leakage bottle. The connecting seat is installed on one side of the integrated valve seat, the connecting seat is communicated with one end of the standard leakage channel, the high-vacuum solenoid valve is arranged on the connecting seat, and the external standard leakage bottle is connected to the high-vacuum solenoid valve.

[0019] As a further improvement of the above technical solution, an electromagnetic valve assembly is further arranged on the integrated valve seat. The electromagnetic valve assembly is respectively connected to the first baffle valve, the second baffle valve and the third baffle valve, and the electromagnetic valve assembly is used to respectively control the actions of the first baffle valve, the second baffle valve and the third baffle valve.

[0020] The beneficial effects of the present utility model are as follows: The present utility model provides an integrated high-vacuum helium leak detection valve seat. By setting an integrated valve seat, a main channel, a helium leak detection channel, a vacuum channel, a calibration leak channel, and two cavity channels that are sequentially connected to the main channel are arranged inside the integrated valve seat. The helium leak detection pipeline, the second baffle valve, the vacuum extraction pipe, the third baffle valve, the calibration leak assembly, the vacuum gauge, the nitrogen cleaning assembly, and two first baffle valves are integrated on one integrated valve seat. Thus, the pipeline layout is simplified, the overall structure is compact, the equipment cost is reduced, and individual detection of each cavity can be achieved. Brief Description of the Drawings

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0022] Figure 1 is a schematic structural diagram of an integrated high-vacuum helium leak detection valve seat according to an embodiment of the present utility model;

[0023] Figure 2 is Figure 1 a schematic structural diagram of another perspective;

[0024] Figure 3 is Figure 1 an exploded view;

[0025] Figure 4 is Figure 1 a cross-sectional view of the integrated valve seat in

[0026] Reference numerals: 1 - integrated valve seat, 2 - first baffle valve, 3 - helium leak detection assembly, 4 - vacuum extraction assembly, 5 - calibration leak assembly, 6 - vacuum gauge, 7 - nitrogen cleaning assembly, 8 - solenoid valve assembly, 11 - main channel, 12 - helium leak detection channel, 13 - vacuum channel, 14 - calibration leak channel, 15 - cavity channel, 16 - valve cavity, 17 - sub-channel, 18 - connection hole, 21 - driving member, 22 - valve core, 23 - end face sealing ring, 24 - first sealing ring, 31 - helium leak detection pipeline, 32 - second baffle valve, 41 - third baffle valve, 42 - vacuum extraction pipe, 51 - connection seat, 52 - high-vacuum solenoid valve, 53 - external calibration leak bottle, 54 - centering sealing ring. Detailed Description of the Embodiment

[0027] The concept, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts all fall within the scope of protection of the present utility model. In addition, all connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to specific implementation situations. Each technical feature in the creation of the present utility model can be interactively combined on the premise of not conflicting with each other.

[0028] Referring to Figures 1 to 4 , an integrated high-vacuum helium leak detection valve seat provided by an example of the present utility model includes an integrated valve seat 1, a helium leak detection component 3, a vacuum pumping component 4 and a calibration leak component 5 provided on the integrated valve seat 1.

[0029] Among them, a main channel 11, a helium leak detection channel 12, a vacuum channel 13, a calibration leak channel 14 and two cavity channels 15 that are sequentially connected to the main channel 11 are arranged inside the integrated valve seat 1. One ends of the two cavity channels 15 both penetrate through one side of the integrated valve seat 1 and are respectively connected to two independent battery cavities. Two first baffle valves 2 are arranged on the integrated valve seat 1, and the two first baffle valves 2 are respectively used to control the on-off of the two cavity channels 15.

[0030] In terms of structure, the helium leak detection component 3 includes a helium leak detection pipeline 31 and a second baffle valve 32. One end of the helium leak detection pipeline 31 penetrates through one side of the integrated valve seat 1, and the helium leak detection pipeline 31 is connected to one end of the helium leak detection channel 12. The second baffle valve 32 is used to control the on-off of the helium leak detection channel 12.

[0031] Furthermore, the vacuum pumping component 4 includes a third baffle valve 41 and two vacuum pumping pipelines 42. Both ends of the vacuum channel 13 penetrate through both sides of the integrated valve seat 1 and are connected to the two vacuum pumping pipelines 42. The third baffle valve 41 is used to control the on-off between the main channel 11 and the vacuum channel 13.

[0032] Even further, one end of the calibration leak channel 14 penetrates through one side of the integrated valve seat 1 and is connected to the calibration leak component 5.

[0033] During detection, it is necessary to perform detection operations such as vacuum pumping, helium injection, and calibration leak for each independent battery cavity.

[0034] When evacuating, one of the first baffle valves 2 is closed and the other first baffle valve 2 is opened, disconnecting one cavity channel 15 from the main channel 11 and connecting the other cavity channel 15 to the main channel 11. At the same time, the second baffle valve 32 is closed and the third baffle valve 41 is opened, disconnecting the helium leak detection channel 12 from the main channel 11 and connecting the vacuum channel 13 to the main channel 11. Then, an external vacuum pumping device evacuates one of the independent battery cavities through the vacuum pumping pipe 42.

[0035] When injecting helium, the two first baffle valves 2 remain inactive, the second baffle valve 32 is opened, and the third baffle valve 41 is closed, connecting the helium leak detection channel 12 to the main channel 11 and disconnecting the vacuum channel 13 from the main channel 11. Then, helium is injected into one of the independent battery cavities through the helium leak detection pipe 31.

[0036] When detecting leaks, the second baffle valve 32 is closed, and both the two first baffle valves 2 and the third baffle valve 41 remain inactive, disconnecting the helium leak detection channel 12 from the main channel 11 and keeping the leak detection channel 14 always connected to the main channel 11. Leak detection is performed on one of the independent battery cavities through the leak detection assembly 5.

[0037] After the leak detection is completed, the above operations are repeated to perform detection operations such as evacuating, injecting helium, and detecting leaks on the other independent battery cavity in sequence.

[0038] Therefore, the utility model can integrate components of different gas paths on an integrated valve seat 1, simplify the pipeline layout, make the overall structure compact, reduce the equipment cost, and can realize individual detection of each cavity.

[0039] In some preferred embodiments, the first baffle valve 2 includes a driving member 21 and a valve core 22. The driving member 21 is used to drive the valve core 22 to conduct or block the cavity channel 15. The integrated valve seat 1 is provided with a valve cavity 16 for accommodating the movement of the valve core 22. The valve cavity 16 can provide a guiding function when the valve core 22 moves, thereby improving the stability of the valve core 22 during movement.

[0040] Furthermore, the valve core 22 is a cylindrical structure, both the valve cavity 16 and the cavity channel 15 are circular hole structures. One end of the cavity channel 15 is coaxially arranged with the valve cavity 16. One end of the cavity channel 15 is located at the bottom of the valve cavity 16. The diameter of the valve core 22 is larger than the diameter of the cavity channel 15. Correspondingly, the diameter of the valve cavity 16 is also larger than the diameter of the cavity channel 15. Moreover, the cavity channel 15 and the valve cavity 16 form a stepped hole. The driving member 21 is used to drive the valve core 22 to approach or move away from one end of the cavity channel 15, thereby facilitating the processing of the valve core 22 and the valve cavity 16 and reducing the processing cost of the integrated valve seat 1.

[0041] It can be understood that when the driving member 21 drives the valve core 22 to approach one end of the cavity passage 15, one end of the valve core 22 abuts against the bottom of the valve cavity 16, so that the valve core 22 closes one end of the cavity passage 15. When the driving member 21 drives the valve core 22 away from one end of the cavity passage 15, one end of the valve core 22 separates from the bottom of the valve cavity 16, so that the cavity passage 15 communicates with the main passage 11. Thus, it is convenient to block the cavity passage 15.

[0042] Further, an end face sealing ring 23 is arranged at one end of the valve core 22 close to the cavity passage 15. When the driving member 21 drives the valve core 22 to approach one end of the cavity passage 15, one end of the valve core 22 and the bottom of the valve cavity 16 are in sealing cooperation through the end face sealing ring 23. Thus, the sealing performance can be improved, and the accuracy during the detection process can be ensured.

[0043] In some preferred embodiments, the driving member 21 is a cylinder, the cylinder is installed on the side of the integrated valve seat 1, the valve core 22 is arranged at the end of the telescopic rod of the cylinder, and the structure of the cylinder is simple, and it is easy to realize the reciprocating movement of the valve core 22.

[0044] Further, a first sealing groove (not shown in the figure) is arranged between the cylinder and the integrated valve seat 1, and a first sealing ring 24 is installed in the first sealing groove. Thus, the sealing performance between the cylinder and the integrated valve seat 1 can be improved, the leakage of gas in the valve cavity 16 can be avoided, and the accuracy of the detection process can be ensured.

[0045] It should be noted that the first sealing groove can be arranged on the cylinder, or on the integrated valve seat 1, or even on both the cylinder and the integrated valve seat 1. The two first sealing grooves are arranged opposite to each other, and the total depth of the two first sealing grooves is less than the diameter of the first sealing ring 24.

[0046] In some preferred embodiments, the structures of the second baffle valve 32 and the third baffle valve 41 are the same as the structure of the first baffle valve 2.

[0047] Correspondingly, one end of the helium detection channel 12 is coaxially arranged with the corresponding valve cavity 16, the valve cavity 16 penetrates through the main channel 11, and the diameter of the helium detection channel 12 is smaller than the diameter of the corresponding valve cavity 16, so that the helium detection channel 12 and the corresponding valve cavity 16 form a stepped hole.

[0048] Further, the vacuum channel 13 and the main channel 11 are conducted through a connection hole 18. The connection hole 18 is coaxially arranged with the corresponding valve cavity 16, the valve cavity 16 penetrates through the main channel 11, and the diameter of the connection hole 18 is smaller than the diameter of the corresponding valve cavity 16, so that the connection hole 18 and the corresponding valve cavity 16 form a stepped hole. Thus, it is convenient for the processing of the integrated valve seat 1.

[0049] In some preferred embodiments, sub-channels 17 are respectively arranged between the main channel 11 and the two cavity channels 15. The two sub-channels 17 respectively penetrate through both sides of the integrated valve seat 1 and are respectively connected to a vacuum gauge 6 and a nitrogen cleaning assembly 7. The corresponding valve cavities 16 penetrate through the corresponding sub-channels 17.

[0050] It can be understood that the vacuum gauge 6 is connected to the sub-channel 17, which can connect the vacuum gauge 6 to the main channel 11. Thus, it is convenient to monitor the vacuum degree of the battery cavity in real time.

[0051] Furthermore, by arranging the nitrogen cleaning assembly 7, the nitrogen cleaning assembly 7 is connected to the sub-channel 17, which can connect the nitrogen cleaning assembly 7 to the main channel 11. After helium leak detection is completed, the nitrogen cleaning assembly 7 introduces nitrogen into the main channel 11, and the nitrogen flows along the various gas paths connecting the main channel 11. Since nitrogen has excellent cleaning effect on helium, it can clean the helium remaining inside the integrated valve seat 1, the battery cavity and each detection component. Thus, it can ensure the cleanliness inside the integrated valve seat 1, the battery cavity and each detection component, and further ensure the sensitivity of the equipment.

[0052] Furthermore, the two sub-channels 17 are coaxially arranged, thus facilitating the processing of the sub-channels 17.

[0053] In some preferred embodiments, the leak standard component 5 includes a connecting seat 51, a high-vacuum solenoid valve 52 and an external leak standard bottle 53. The connecting seat 51 is installed on one side of the integrated valve seat 1. The connecting seat 51 is connected to one end of the leak standard channel 14. The high-vacuum solenoid valve 52 is arranged on the connecting seat 51. The external leak standard bottle 53 is connected to the high-vacuum solenoid valve 52. The high-vacuum solenoid valve 52 can control the gas flow rate flowing from the leak standard channel 14 to the external leak standard bottle 53. Thus, it is convenient to adjust the sensitivity of the leak standard.

[0054] Furthermore, a counterbore is arranged on one side of the integrated valve seat 1 corresponding to the connecting seat 51. The counterbore is coaxially arranged with the leak standard channel 14. A centering seal ring 54 is installed in the counterbore, thus improving the sealing performance of the structure and avoiding gas leakage inside the integrated valve seat 1.

[0055] In some preferred embodiments, an electromagnetic valve assembly 8 is further arranged on the integrated valve seat 1. The electromagnetic valve assembly 8 is respectively connected to the first baffle valve 2, the second baffle valve 32 and the third baffle valve 41. The electromagnetic valve assembly 8 is used to control the actions of the first baffle valve 2, the second baffle valve 32 and the third baffle valve 41 respectively. Thus, it can facilitate the arrangement of the air pipes, avoid entanglement between multiple air pipes, and improve the service life of the air pipes.

[0056] The above is a specific description of the preferred embodiment of the present utility model. However, the present utility model is not limited to the described embodiment. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present utility model. These equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. An integrated high vacuum helium detection valve seat, characterized in that: include: An integrated valve seat is provided with a main channel, a helium detection channel, a vacuum channel, a leak detection channel and two cavity channels which are sequentially connected to the main channel, one end of each of the two cavity channels passes through one side of the integrated valve seat and is respectively connected to two independent battery cavities, and two first flapper valves are provided on the integrated valve seat, and the two first flapper valves are respectively used to control the on and off of the two cavity channels; A helium detection assembly, comprising a helium detection pipeline and a second baffle valve, one end of the helium detection pipeline passes through one side of the integrated valve seat, the helium detection pipeline is communicated with one end of the helium detection channel, and the second baffle valve is used to control the on-off of the helium detection channel; A vacuum pumping assembly, comprising a third flapper valve and two vacuum pumping tubes, wherein the two ends of the vacuum channel respectively penetrate the two sides of the integrated valve seat and are connected to the two vacuum pumping tubes, and the third flapper valve is used to control the connection and disconnection between the main channel and the vacuum channel; The marking leak component is arranged on the integrated valve seat, and one end of the marking leak channel passes through one side of the integrated valve seat and is communicated with the marking leak component.

2. The integrated high vacuum helium detection valve seat according to claim 1, characterized in that: The first baffle valve includes a driving member and a valve core, the driving member is used to drive the valve core to open or close the cavity channel, and the integrated valve seat is provided with a valve cavity to accommodate the movement of the valve core.

3. The integrated high vacuum helium detection valve seat according to claim 2, characterized in that: The valve core is a cylindrical structure, the valve cavity and the cavity channel are both circular hole structures, one end of the cavity channel is coaxially arranged with the valve cavity, one end of the cavity channel is located at the bottom of the valve cavity, the diameter of the valve core is larger than the diameter of the cavity channel, and the driving member is used to drive the valve core to approach or move away from one end of the cavity channel.

4. The integrated high vacuum helium detection valve seat according to claim 3, characterized in that: An end face sealing ring is arranged at one end of the valve core close to the cavity channel.

5. The integrated high vacuum helium detection valve seat according to claim 2, characterized in that: The driving member is a cylinder, which is installed on the side of the integrated valve seat, and the valve core is arranged at the end of the telescopic rod of the cylinder.

6. The integrated high vacuum helium detection valve seat according to claim 5, characterized in that: A first sealing groove is provided between the cylinder and the integrated valve seat, and a first sealing ring is installed in the first sealing groove.

7. The integrated high vacuum helium detection valve seat according to claim 2, characterized in that: The structures of the second flapper valve and the third flapper valve are the same as that of the first flapper valve.

8. The integrated high vacuum helium detection valve seat according to claim 3, characterized in that: Branch channels are respectively arranged between the main channel and the two cavity channels. The two branch channels respectively penetrate the two sides of the integrated valve seat and are respectively connected to a vacuum gauge and a nitrogen cleaning component. The valve cavity penetrates the branch channels.

9. The integrated high vacuum helium detection valve seat according to claim 1, characterized in that: The mark leakage assembly includes a connecting seat, a high vacuum solenoid valve and an external mark leakage bottle. The connecting seat is installed on one side of the integrated valve seat, the connecting seat is connected to one end of the mark leakage channel, the high vacuum solenoid valve is arranged on the connecting seat, and the external mark leakage bottle is connected to the high vacuum solenoid valve.

10. The integrated high vacuum helium detection valve seat according to claim 1, characterized in that: The integrated valve seat is also provided with a solenoid valve assembly, which is respectively connected to the first flapper valve, the second flapper valve and the third flapper valve, and is used to respectively control the actions of the first flapper valve, the second flapper valve and the third flapper valve.

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