CN216791544U - Device for detecting leakage rate of vacuum glass welding seam - Google Patents
Device for detecting leakage rate of vacuum glass welding seam Download PDFInfo
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- CN216791544U CN216791544U CN202123214620.XU CN202123214620U CN216791544U CN 216791544 U CN216791544 U CN 216791544U CN 202123214620 U CN202123214620 U CN 202123214620U CN 216791544 U CN216791544 U CN 216791544U
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- 239000011521 glass Substances 0.000 title claims abstract description 86
- 238000003466 welding Methods 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 60
- 239000001307 helium Substances 0.000 claims abstract description 30
- 229910052734 helium Inorganic materials 0.000 claims abstract description 30
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The application discloses a device for detecting the leak rate of a vacuum glass welding seam, which relates to the technical field of vacuum glass detection and comprises a detection table, an inflation bag and a helium mass spectrometer with an air pumping and detecting system; the detection table is used for placing vacuum glass; the gas-filled bag is used for filling helium, and the gas-filled bag is used for wrapping the welding seam on the peripheral side of the vacuum glass and is connected with the vacuum glass in a sealing way; a detection hole communicated with the inner space is formed in one side of the vacuum glass, the helium mass spectrometer is used for connecting the detection hole, vacuumizing the inside of the vacuum glass, and measuring the comprehensive leakage rate of the welding line on the peripheral side of the vacuum glass.
Description
Technical Field
The application relates to the technical field of vacuum glass detection, in particular to a device for detecting the leakage rate of a vacuum glass welding seam.
Background
During the production and use of vacuum glass, the average free path of gas molecules in the vacuum glass is required to be far larger than the gap between two pieces of vacuum glass because the vacuum degree for maintaining the heat insulation performance is required to be kept. In order to meet the requirements, three aspects are mainly guaranteed: 1. controlling the outgassing of the constituent materials; 2. controlling leakage of the vacuum glass edge seal, namely welding quality; 3. and a getter is implanted in the gas-absorbing device and is used for absorbing the gas exhausted in the later stage of incomplete exhaust and the gas leaked from the welding seam. The control of the above 2 nd influencing factor is of great importance because the implantation amount of the getter is limited, and if the welding seam leakage rate is too large, the vacuum glass can hardly maintain the required service life. The existing welding seam detection technology adopts nondestructive inspection to detect the quality of a welding seam, but the leakage rate of the welding seam cannot be reflected visually.
Disclosure of Invention
The application aims to provide a device for detecting the leakage rate of a vacuum glass welding seam, which aims to solve the problem that the leakage rate of the welding seam cannot be intuitively reflected.
The application provides a device for detecting the leak rate of a vacuum glass welding seam, which comprises a detection table, an inflatable bag and a helium mass spectrometer with an air pumping and detecting system;
the detection table is used for placing vacuum glass; the inflatable bag is used for filling helium, and the inflatable bag is used for wrapping the welding seams on the peripheral side of the vacuum glass and is connected with the vacuum glass in a sealing way; one side of the vacuum glass is provided with a detection hole communicated with the inner space, the helium mass spectrometer is used for connecting the detection hole, vacuumizing the inside of the vacuum glass and measuring the comprehensive leakage rate of the welding seams on the peripheral side of the vacuum glass.
Optionally, a pressing frame for pressing the inflatable bag is arranged on the detection table, the periphery of one side of the inflatable bag is clamped between the vacuum glass and the detection table, and the periphery of the other side of the inflatable bag is clamped between the vacuum glass and the pressing frame.
Optionally, the detection table is further provided with an isolation air curtain device, and the isolation air curtain device blows air towards the vacuum glass to form an air curtain for blocking air leakage between the joint seam of the inflatable bag and the vacuum glass and the detection hole.
Optionally, the isolation air curtain device blows air obliquely towards one side far away from the detection hole along the peripheral side.
Optionally, the helium mass spectrometer is connected to the detection hole through a vacuum bellows.
Optionally, one end of the vacuum corrugated pipe close to the detection hole is connected with a sealing ring, and the inner diameter of the sealing ring is larger than the diameter of the detection hole.
Optionally, the inner side of the sealing ring is connected with an annular support, and the annular support is detachably connected with the vacuum corrugated pipe.
Optionally, a gap exists between the annular support and the vacuum glass.
Optionally, the detection hole is located at the center of the vacuum glass.
In summary, the present application includes at least one of the following benefits:
1. the comprehensive total leakage rate of the welding seam of the vacuum glass is obtained through visual detection of a helium mass spectrometer, the leakage rate of the welding seam of the vacuum glass in unit area is further calculated, so that the welding quality index of the vacuum glass is obtained, and the rationality of the welding process of the product, the vacuum performance of the welding flux and the quantitative index for judging the service life of the vacuum glass are guided by the index;
2. the compression frame can reduce helium leakage in the inflatable bag;
3. by adopting the isolated air curtain device, helium gas possibly leaked from the edge of the inflatable bag can be prevented from flowing to the periphery of the detection hole to influence the measurement result, and the accuracy of the detection result is improved;
4. a gap exists between the annular support frame and the vacuum glass, so that after vacuumizing, the sealing ring can generate enough deformation and is abutted against the surface of the vacuum glass, and the connection sealing state between the vacuum corrugated pipe and the detection hole is kept.
Drawings
FIG. 1 is an overall schematic view of the present embodiment;
FIG. 2 is a partially enlarged view of the present embodiment;
fig. 3 is an overall plan view of the present embodiment.
Description of reference numerals: 1. a detection table; 2. an air bag; 21. an inflation inlet; 3. a helium mass spectrometer; 31. a vacuum bellows; 32. a seal ring; 33. an annular support; 4. vacuum glass; 41. welding seams; 42. a detection hole; 5. a pressing frame; 6. and (4) isolating the air curtain device.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a device for detecting the leak rate of a vacuum glass welding seam. The device comprises a detection table 1, an air bag 2 and a helium mass spectrometer 3 with an air pumping and detection system. The detection table 1 is used for placing the vacuum glass 4 so as to facilitate detection. The airbag 2 has an inflation port 21 for filling helium gas toward the inside of the airbag 2. The air bag 2 is used for being sleeved on the peripheral side of the vacuum glass 4, so that the welding seam 41 on the peripheral side of the vacuum glass 4 is positioned inside the air bag 2. The center of the glass layer on one side of the vacuum glass 4 is provided with a detection hole 42, and the detection hole 42 is communicated with the inside of the vacuum glass 4 and is used for detecting the helium mass spectrometer 3. The diameter of the detection hole 42 is not less than 10 mm.
The helium mass spectrometer 3 is connected with a vacuum bellows 31, and a flange interface is installed at the end of the vacuum bellows 31 to completely cover the detection hole 42. The flange interface goes out to install rubber material's sealing washer 32, and fixed the bonding has ring carrier 33 on the sealing washer 32 inner wall, and ring carrier 33 and flange interface can dismantle the connection. Moreover, the annular support 33 is located on one side of the sealing ring 32 far away from the vacuum glass 4, and in the whole detection process, a certain gap is kept between the annular support 33 and the vacuum glass 4, so that when the helium mass spectrometer 3 performs air extraction on the inside of the vacuum glass 4, the sealing ring 32 can generate enough deformation and is abutted against the surface of the vacuum glass 4, and the sealing stability is kept.
In order to reduce helium leakage from the edges of the airbag 2. The detection table 1 is also provided with a pressing frame 5. The pressing frame 5 can be driven to be close to or far from the vacuum glass 4 by adopting a cylinder driving mode. After the inflatable bag 2 is sleeved on the periphery of the vacuum glass 4, the lower side edge of the inflatable bag 2 is tightly pressed between the detection table 1 and the vacuum glass 4; the upper side edge of the vacuum glass is pressed between the pressing frame 5 and the vacuum glass 4. In order to increase the reliability of the detection. The distance from the combined seam of the upper side edge of the air bag 2 and the vacuum glass 4 to the detection hole 42 is more than 100 mm.
In addition, an air curtain isolation device 6 is also mounted on the inspection table 1. The isolation air curtain device 6 is arranged around the outside of the detection hole 42, and the isolation air curtain device 6 is positioned inside the pressing frame 5. The isolated air curtain device 6 blows air towards the vacuum glass 4 to form an annular air curtain so as to prevent helium which may leak from the joint seam of the air bag 2 and the vacuum glass 4 from flowing to the detection hole 42 to affect the detection result. The isolating air curtain device 6 blows air downwards in an inclined mode towards the direction far away from the detection hole 42, and the isolating effect is further improved.
When in detection:
the method comprises the following steps: after the vacuum glass 4 is filled into the inflatable bag 2, the peripheral side of the inflatable bag 2 is wrapped on the peripheral welding line 41 of the vacuum glass 4, the vacuum glass 4 is placed on the detection table 1, and the edge of the inflatable bag 2 is pressed on the vacuum glass 4 through the pressing frame 5; aligning the vacuum bellows 31 with the detection hole 42, and starting an air pumping system of the helium mass spectrometer 3 to vacuumize the interior of the vacuum glass 4;
step two: the detection system of the helium mass spectrometer 3 is opened, and the isolating gas curtain device 6 is opened; after the air in the air bag 2 is discharged, helium gas is filled in the air bag;
step three: reading a result; when a helium leakage rate curve displayed by the helium mass spectrometer 3 is stable, reading a leakage rate value, wherein the value is the comprehensive total helium leakage rate of the whole piece of vacuum glass 4 and the unit is Pa.L/s;
step four: processing data; calculating the outer edge area of the glass welding seam 41, and dividing the measured comprehensive total helium leakage rate by the total outer edge area of the welding seam 41 to obtain the helium leakage rate of the vacuum glass 4 in unit sealing area, wherein the unit is Pa.L/s.mm 2;
step five: repeating the first step to the fourth step for multiple times, and taking the average value as a final measurement result.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a detect device of vacuum glass welding seam leak rate which characterized in that: comprises a detection table, an air bag and a helium mass spectrometer with an air pumping and detecting system;
the detection table is used for placing vacuum glass; the inflatable bag is used for filling helium, and the inflatable bag is used for wrapping the welding seams on the peripheral side of the vacuum glass and is connected with the vacuum glass in a sealing way; one side of the vacuum glass is provided with a detection hole communicated with the inner space, the helium mass spectrometer is used for connecting the detection hole, vacuumizing the inside of the vacuum glass and measuring the comprehensive leakage rate of the welding seams on the peripheral side of the vacuum glass.
2. The device for detecting the leak rate of the vacuum glass weld joint according to claim 1, wherein: the detection table is provided with a pressing frame for pressing the inflatable bag, the periphery of one side of the inflatable bag is clamped between the vacuum glass and the detection table, and the periphery of the other side of the inflatable bag is clamped between the vacuum glass and the pressing frame.
3. The device for detecting the leak rate of the vacuum glass weld joint according to claim 2, wherein: the detection table is also provided with an isolation air curtain device, and the isolation air curtain device blows air towards the vacuum glass to form an air curtain for blocking air leakage between the joint seam of the inflatable bag and the vacuum glass and the detection hole.
4. The device for detecting the leak rate of the vacuum glass weld joint according to claim 3, wherein: the isolation air curtain device blows air obliquely towards one side far away from the detection hole along the peripheral side.
5. The device for detecting the leak rate of the vacuum glass weld joint according to claim 1, wherein: the helium mass spectrometer is connected to the detection hole through a vacuum bellows.
6. The device for detecting the leak rate of the vacuum glass weld joint according to claim 5, wherein: one end of the vacuum corrugated pipe close to the detection hole is connected with a sealing ring, and the inner diameter of the sealing ring is larger than the diameter of the detection hole.
7. The device for detecting the leak rate of the vacuum glass weld joint according to claim 6, wherein: the inner side of the sealing ring is connected with an annular support, and the annular support is detachably connected with the vacuum corrugated pipe.
8. The device for detecting the leak rate of the vacuum glass weld joint according to claim 7, wherein: and a gap is formed between the annular support and the vacuum glass.
9. The device for detecting the leak rate of the vacuum glass weld joint according to claim 1, wherein: the detection hole is positioned in the center of the vacuum glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123214620.XU CN216791544U (en) | 2021-12-20 | 2021-12-20 | Device for detecting leakage rate of vacuum glass welding seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123214620.XU CN216791544U (en) | 2021-12-20 | 2021-12-20 | Device for detecting leakage rate of vacuum glass welding seam |
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| Publication Number | Publication Date |
|---|---|
| CN216791544U true CN216791544U (en) | 2022-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123214620.XU Active CN216791544U (en) | 2021-12-20 | 2021-12-20 | Device for detecting leakage rate of vacuum glass welding seam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114563138A (en) * | 2021-12-20 | 2022-05-31 | 维爱吉(厦门)科技有限责任公司 | Device and method for detecting vacuum glass welding seam leakage rate |
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2021
- 2021-12-20 CN CN202123214620.XU patent/CN216791544U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114563138A (en) * | 2021-12-20 | 2022-05-31 | 维爱吉(厦门)科技有限责任公司 | Device and method for detecting vacuum glass welding seam leakage rate |
| WO2023116624A1 (en) * | 2021-12-20 | 2023-06-29 | 维爱吉(厦门)科技有限责任公司 | Device and method for measuring leak rate of weld seam of vacuum glass |
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