Vacuum glass capable of detecting sealing performance on line in real time

Abstract

The utility model discloses vacuum glass capable of detecting sealing performance on line in real time. The vacuum glass comprises a first glass plate and a second glass plate parallel to the first glass plate, the edges of the first glass plate and the second glass plate are in sealed connection through a sealing structure, a plurality of supports are arranged between the first glass plate and the second glass plate, and the area between the first glass plate and the second glass plate is a vacuum cavity. A plurality of color-changing agent printing areas are arranged on the inner surface of at least one of the first glass plate and the second glass plate, and color-changing agents are arranged on the color-changing agent printing areas. The vacuum glass provided by the utility model can realize on-line real-time detection of sealing performance.

Description

Technical Field

[0001] The utility model relates to vacuum glass capable of detecting sealing performance online in real time, belonging to the technical field of vacuum glass. Background Art

[0002] Vacuum glass is the latest energy-saving glass that effectively blocks heat transfer between indoor and outdoor spaces, significantly reducing air conditioning power consumption and greenhouse gas emissions, and thus reducing environmental pollution. Vacuum glass possesses exceptional thermal insulation properties. In cold winter months, even when the outdoor temperature is well below freezing, the indoor glass surface temperature remains close to room temperature, well above the condensation point. The interior of vacuum glass is in a vacuum state, unaffected by ambient air pressure, making it suitable for use at various altitudes. Furthermore, vacuum glass maintains its excellent performance regardless of where it is applied in a building, including on facades, slopes, and roofs. The increased gas convection that occurs when insulating glass is laid flat eliminates the problem of performance degradation. However, once the vacuum in vacuum glass is broken, the aforementioned advantages are significantly reduced, making it extremely important to test the sealing properties of vacuum glass.

[0003] The vacuum chamber of vacuum glass is very thin, measuring approximately 0.2mm to 0.5mm thick. This makes it difficult for existing air pressure testing instruments to be installed directly within the chamber to measure air pressure in real time. Therefore, current methods for testing the sealing properties of vacuum glass primarily rely on offline testing. The sealing properties of semi-finished products during vacuum glass production, finished products in inventory, and finished products during use all require offline testing according to specific standards. Common methods for testing the sealing properties of vacuum glass include the boiling water method, the heat flow meter method, and the calibrated hot box method.

[0004] The boiling water method involves placing the vacuum glass to be tested flat on a water boiler. The water is then heated, transferring heat to the vacuum glass through the steam. A temperature probe is then used to measure the surface temperature of the vacuum glass. The rate of temperature rise is compared with that of a standard vacuum component that has not failed, indirectly inferring whether the vacuum glass's sealing has failed.

[0005] The heat flow meter method is tested in accordance with GB / T 10295, while the calibration hot box method is tested in accordance with GB / T 8484. Regardless of the method used, specific testing equipment is required for testing, and typically only national-level testing centers have this testing capability. The vacuum glass must be left in a constant temperature environment for 48 hours before testing. The testing process requires waiting for the heat transfer of the test sample to reach equilibrium, resulting in a long test time, typically exceeding six hours. Even if companies have the means to purchase the equipment, they can only perform spot tests on mass-produced vacuum glass and cannot achieve full inspection. For example, the heat flow meter method involves placing a standard-sized vacuum glass on the cold plate of the testing instrument, placing a hot plate on the vacuum glass, and adjusting the up and down adjustment knobs to tightly fit the hot plate to the vacuum glass. The hot plate is then powered on and the test software is launched. By measuring the thermal resistance of the vacuum glass, it can be determined whether the vacuum glass's sealing has failed.

[0006] The above vacuum glass sealing testing methods can only test offline samples and cannot test installed finished vacuum glass. They also suffer from cumbersome testing steps, long testing time, high testing costs, the need to transport the glass, and the risk of glass scratches and breakage during the testing process. Therefore, there is an urgent need to develop a vacuum glass sealing method that can perform online, real-time testing. Utility Model Content

[0007] In order to solve the above technical problems, the purpose of the present invention is to provide a vacuum glass capable of online and real-time detection of sealing performance. The vacuum glass of the present invention can realize online and real-time detection of sealing performance.

[0008] To achieve the above-mentioned objectives, the present invention provides a vacuum glass capable of online real-time sealing detection, comprising: a first glass plate and a second glass plate arranged parallel to the first glass plate, the edges of the first glass plate and the second glass plate being sealed together by a sealing structure, a plurality of supports being arranged between the first glass plate and the second glass plate, and the area between the first glass plate and the second glass plate being a vacuum chamber; wherein the inner surface of at least one of the first glass plate and the second glass plate is provided with a plurality of color-changing agent printed areas, the color-changing agent being provided on the color-changing agent printed areas, and the number of the color-changing agent printed areas satisfies the following formula:

[0009] Number of color-changing agent printing areas = ROUNDUP (L / √2) × ROUNDUP (W / √2);

[0010] Wherein, L is the length of the glass plate having the plurality of color-changing agent printing areas on the inner surface thereof, in m; W is the width of the glass plate having the plurality of color-changing agent printing areas on the inner surface thereof, in m.

[0011] According to a specific embodiment of the present invention, preferably, the color-changing agent is an irreversible color-changing agent. More preferably, the color-changing agent is an organic-inorganic hybrid perovskite.

[0012] According to a specific embodiment of the present invention, preferably, the thickness of the color-changing agent printing area is 0.1 to 0.4 mm.

[0013] According to a specific embodiment of the present invention, preferably, the color-changing agent printing area is a circular area with a diameter of 5 to 20 mm.

[0014] According to a specific embodiment of the present invention, preferably, ROUNDUP (L / √2) ≥ 2 or ROUNDUP (W / √2) ≥ 2, and the distance between two or more color-changing agent printing areas and the shortest distance between two or more color-changing agent printing areas and the lengthwise edge and widthwise edge of the glass plate whose inner surface is provided with several color-changing agent printing areas are equal.

[0015] According to a specific embodiment of the present invention, preferably, the first glass plate and the second glass plate are respectively made of soda-lime glass or high-aluminum glass.

[0016] According to a specific embodiment of the present invention, preferably, the first glass plate and the second glass plate are chemically tempered glass or physically tempered glass, etc.

[0017] According to a specific embodiment of the present invention, preferably, the thickness of the vacuum chamber is 0.2-0.5 mm.

[0018] According to a specific embodiment of the present invention, preferably, the support comprises stainless steel, felt, chrome steel, aluminum alloy or ceramics.

[0019] According to a specific embodiment of the present invention, preferably, at least one of the first glass plate and the second glass plate is provided with an exhaust hole and a sealing sheet for sealing the exhaust hole.

[0020] The utility model has at least the following beneficial effects:

[0021] This utility model provides a vacuum glass capable of online, real-time sealing testing. A color-changing agent is provided within the vacuum glass. When the seal fails, air enters the vacuum chamber, causing the color of the color-changing agent to change. This color change allows for intuitive determination of sealing failure. This utility model offers the advantages of simplicity, online, real-time sealing testing, high efficiency, and low cost, making it ideal for mass production. Testing the sealing of semi-finished products in production and finished products in stock does not require special testing equipment, preventing scratches or breakage. Even finished products already installed and in use do not need to be disassembled, enabling real-time testing of the vacuum glass's sealing performance, greatly facilitating subsequent after-sales service and troubleshooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of vacuum glass capable of online real-time sealing detection in some specific embodiments of the present invention.

[0023] Figure 2 Schematic diagram of the structure of vacuum glass capable of online real-time sealing detection in other specific embodiments of the present invention.

[0024] Description of Figure Numbers:

[0025] 1-first glass plate; 2-second glass plate; 3-support; 4-vacuum chamber; 5-color-changing agent printing area; 6-color-changing agent; 7-exhaust hole. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, objectives and beneficial effects of the present invention, the present invention is now described in detail below, but it should not be understood as limiting the scope of implementation of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] According to the specific implementation of the present utility model, Figure 1 As shown, the utility model provides a vacuum glass capable of online real-time sealing detection, comprising: a first glass plate 1 and a second glass plate 2 arranged parallel to the first glass plate 1, wherein the edges of the first glass plate 1 and the second glass plate 2 are sealed together by a sealing structure, a plurality of supports 3 are arranged between the first glass plate 1 and the second glass plate 2, and the area between the first glass plate 1 and the second glass plate 2 is a vacuum chamber 4; wherein, the inner surface (i.e., the surface facing the vacuum chamber 4) of at least one of the first glass plate 1 and the second glass plate 2 is provided with a plurality of color-changing agent printed areas 5, a color-changing agent 6 is provided on the color-changing agent printed areas 5, and the number of the color-changing agent printed areas 5 satisfies the following formula:

[0030]

[0031] Where, L is the length of the glass plate with the color-changing agent printed areas 5 on the inner surface, in meters; W is the width of the glass plate with the color-changing agent printed areas 5 on the inner surface, in meters. ROUNDUP means rounding up, that is, calculating Then round up and calculate The two rounded-up values ​​are then multiplied to obtain the number of color-changing agent printing areas 5.

[0032] In some embodiments, the color-changing agent 6 is an irreversible color-changing agent. Preferably, the color-changing agent 6 is an organic-inorganic hybrid perovskite. Specifically, the color-changing agent includes (PDMA)MA n-1 Pb n I 3n+1 (n=1, 2 or 3) or methylamine lead iodide (MAPbI3), (PDMA)MA n-1 Pb n I3 n+1 For example, it can be (PDMA)MAPb2I7, etc. Wherein, PDMA is (C6H4(CH2NH3)2 +). These organic-inorganic hybrid perovskites are all materials in the prior art. The present invention does not impose any special restrictions on their preparation methods. They can be prepared using methods in the prior art. For example, see Instability of solution-processed perovskite films: origin and mitigation strategies reported by Wang et al. (Shuo Wang, Ming-Hua Li, Yan Jiang, Jin-Song Hu., Materials Futures[J]. 2023, 2(1).). In terms of color change mechanism, specifically, (PDMA) MAPb2I7 undergoes a color change from reddish brown to colorless at room temperature and water vapor conditions. The color change mechanism is mainly due to the penetration of water molecules causing the NH stretching vibration to change while forming a complex phase transition. MAPbI3 also undergoes a color change from reddish brown to colorless at room temperature and water vapor conditions. The color change principle of the organic-inorganic hybrid perovskite used in the present invention is to react with water and oxygen in the air to produce color changes. Compared to traditional inorganic perovskites and other color-changing agents, the present invention uses an organic-inorganic hybrid perovskite as the color-changing agent 6. Its structure is more stable, permanently reverting to its original state under vacuum conditions, and exhibits greater color transition sensitivity. When the vacuum glass seal fails, air enters the vacuum chamber 4, where the water and oxygen in the air react with the color-changing agent 6, causing the color of the agent 6 to change. This color change can then be used to determine if the seal has failed. The test results are clear and can be monitored online in real time.

[0033] In some embodiments, the thickness of the color-changing agent printed area 5 (ie, the printed thickness of the color-changing agent 6 ) is 0.1 to 0.4 mm.

[0034] In some embodiments, each color-changing agent printing area 5 is a circular area with a diameter of 5 to 20 mm.

[0035] In some embodiments, ROUNDUP(L / √2)≥2 or ROUNDUP(W / √2)≥2, and the distance between two or more color-changing agent printing areas 5 and the shortest distance between the two or more color-changing agent printing areas 5 and the edge in the length direction and the shortest distance between the two or more color-changing agent printing areas 5 and the edge in the width direction of the glass plate whose inner surface is provided with a plurality of color-changing agent printing areas 5 are equal. That is, the two or more color-changing agent printing areas 5 are arranged at equal intervals along the length and width directions of the glass plate whose inner surface is provided with a plurality of color-changing agent printing areas 5. It should be noted that the shortest distance described in the present invention refers to the length of the shortest perpendicular segment from the color-changing agent printing area 5 to the edge in the length direction and / or the edge in the width direction of the glass plate. Specifically, for example, ROUNDUP(L / √2) is 2, ROUNDUP(W / √2) is 1, the number of color-changing agent printing areas 5 is 2, the distance between the two color-changing agent printing areas 5 and the shortest distance between the two color-changing agent printing areas 5 and the edge in the length direction and the edge in the width direction of the glass plate are equal. The two color-changing agent printing areas 5 can be arranged in a straight line. For another example, ROUNDUP(L / √2) is 3, ROUNDUP(W / √2) is 1, the number of color-changing agent printing areas 5 is 3, the distances between the 3 color-changing agent printing areas 5 are equal, and the shortest distances between the 3 color-changing agent printing areas 5 and the edges in the length direction and the width direction of the glass plate are equal. The 3 color-changing agent printing areas 5 can be arranged in a straight line with equal spacing. For another example, ROUNDUP(L / √2) is 2, ROUNDUP(W / √2) is 2, the number of color-changing agent printing areas 5 is 4, the distances between the 4 color-changing agent printing areas 5 are equal, and the shortest distances between the 4 color-changing agent printing areas 5 and the edges in the length direction and the width direction of the glass plate are equal. The 4 color-changing agent printing areas 5 can be arranged in a square shape (2 × 2) with equal spacing along the length and width directions of the glass plate. For another example, if ROUNDUP(L / √2) is 3 and ROUNDUP(W / √2) is 2, there are six color-changing agent printed areas 5, the distances between the six color-changing agent printed areas 5 are equal, and the shortest distances between the six color-changing agent printed areas 5 and the edges in the longitudinal direction and the width direction of the glass plate are equal. The six color-changing agent printed areas 5 can be arranged in a rectangular shape (3 × 2) with equal spacing along the length and width of the glass plate.

[0036] In some embodiments, the length L of the glass plate with the plurality of color-changing agent printed areas 5 on the inner surface thereof is 0.1-10 m, and the width W of the glass plate with the plurality of color-changing agent printed areas 5 on the inner surface thereof is 0.1-10 m.

[0037] In some embodiments, the first glass plate 1 and the second glass plate 2 are respectively made of soda-lime glass or high-aluminum glass.

[0038] In some embodiments, the first glass plate 1 and the second glass plate 2 are respectively chemically tempered glass or physically tempered glass.

[0039] In some embodiments, the thickness of the vacuum chamber 4 is 0.2-0.5 mm.

[0040] In some embodiments, the support 3 comprises stainless steel, felt, chrome steel, aluminum alloy, ceramic, or the like.

[0041] In some embodiments, the shape of the support 3 includes a columnar shape.

[0042] In some embodiments, a plurality of supports 3 are arranged at equal intervals. It will be understood by those skilled in the art that the support 3 should be arranged in a position that does not block the color-changing agent printing area 5 .

[0043] In some embodiments, at least one of the first glass plate 1 and the second glass plate 2 is provided with an air extraction hole 7 and a sealing sheet for sealing the air extraction hole 7. Figure 1 Preferably, the air extraction hole 7 is a cylindrical hole with a diameter of 1 to 10 mm.

[0044] In some embodiments, the sealing structure includes but is not limited to a sealing structure formed by glass powder, glass strips, glue sealing or laser welding. Figure 1 The sealing structure is not shown in FIG.

[0045] The vacuum glass capable of online real-time sealing detection of the present invention is described below with reference to specific embodiments. However, the present invention is not limited to the following embodiments and can be implemented with various modifications within the scope of the main points of the present invention.

[0046] Example 1

[0047] like Figure 1 As shown, this embodiment provides a vacuum glass capable of online real-time sealing detection, comprising: a first glass plate 1 and a second glass plate 2 arranged parallel to the first glass plate 1, wherein the edges of the first glass plate 1 and the second glass plate 2 are sealed together by a sealing structure, a plurality of supports 3 are arranged between the first glass plate 1 and the second glass plate 2, and the area between the first glass plate 1 and the second glass plate 2 is a vacuum chamber 4; wherein, a plurality of color-changing agent printed areas 5 are provided on the inner surface of the first glass plate 1, and a color-changing agent 6 is provided on the color-changing agent printed areas 5, and the number of the color-changing agent printed areas 5 satisfies the following formula:

[0048] The number of color-changing agent printing areas 5 = ROUNDUP (L / √2) × ROUNDUP (W / √2);

[0049] Wherein, L is the length of the first glass plate 1 , in m; W is the width of the first glass plate 1 , in m.

[0050] In this embodiment, the length and width of the first glass plate 1 are 2 m x 1.2 m, so there are two color-changing agent printed areas 5. The distance between the two color-changing agent printed areas 5 and the shortest distance between the two color-changing agent printed areas 5 and the longitudinal and width edges of the first glass plate 1 are equal. The two color-changing agent printed areas 5 are arranged in a straight line.

[0051] In this embodiment, the color-changing agent 6 is (PDMA)MAPb2I7. The thickness of the color-changing agent printing area 5 is 0.1 mm. The color-changing agent printing area 5 is a circular area with a diameter of 5 mm. The first glass plate 1 and the second glass plate 2 are respectively made of soda-lime glass. The first glass plate 1 and the second glass plate 2 are respectively chemically tempered glass. The thickness of the vacuum chamber 4 is 0.3 mm. The support 3 is a stainless steel column. Several supports 3 are arranged at equal intervals. The second glass plate 2 is provided with an exhaust hole 7 and a sealing plate for sealing the exhaust hole 7. The exhaust hole 7 is a cylindrical hole with a diameter of 7 mm. The sealing structure is a sealing structure formed by laser welding.

[0052] The method for preparing vacuum glass capable of online real-time sealing detection comprises the following steps:

[0053] (1) Positioning printing: Print a required number of hollow circular areas on the first glass plate 1. The diameter of the circular area is 5 mm, and the edge color of the circular area is black or white, forming a plurality of color-changing agent printing areas 5. These areas are used for positioning the color-changing agent and for easy observation by the user after the color change.

[0054] (2) Color-changing agent printing: a solution of the color-changing agent 6 is printed onto the color-changing agent printing area 5. The color-changing agent 6 is exposed to the air and is color A. The number of printing times is 1 to 10 times, the printing speed is 5 to 20 mm / s, and the thickness of each printing can be 0.05 mm.

[0055] (3) High-temperature solvent removal: The glass after printing the color-changing agent 6 is subjected to high-temperature exhaust to remove the solvent in the solution of the color-changing agent 6 to prevent the solvent from volatilizing and affecting the vacuum degree during use. The exhaust temperature is 200-300°C and the time is 2-6 hours;

[0056] (4) Vacuum welding: a plurality of supports 3 are evenly arranged between the first glass plate 1 and the second glass plate 2, with the spacing between each two adjacent supports 3 being 20 to 55 mm, and then the edges of the first glass plate 1 and the second glass plate 2 are sealed using an edge sealing process to form a sealed structure;

[0057] (5) Vacuuming: Use a vacuum pump to evacuate the evacuation hole 7, and heat and evacuate the first and second glass plates 1 and 2 after the sheets are joined. The heating temperature is 80°C to 150°C, and the vacuuming time is 6 to 12 hours. The air between the first and second glass plates 1 and 2 is removed to form a vacuum cavity 4. At this time, the color-changing agent 6 changes to color B.

[0058] (6) Sealing: Finally, the air extraction hole 7 is sealed with a sealing sheet.

[0059] At this time, there is no air in the vacuum chamber 4 . Under the condition of good sealing, the color of the color-changing agent 6 will always be color B. When air enters the vacuum chamber 4 , the color of the color-changing agent will change to color A.

[0060] For comparison, the number of the color-changing agent printing area 5 in Example 1 was changed to 1. During application, it was found that when the sealing of the vacuum glass failed, the color change response time was longer than that in Example 1.

[0061] Example 2

[0062] like Figure 1 As shown, this embodiment provides a vacuum glass capable of online real-time sealing detection, comprising: a first glass plate 1 and a second glass plate 2 arranged parallel to the first glass plate 1, wherein the edges of the first glass plate 1 and the second glass plate 2 are sealed together by a sealing structure, a plurality of supports 3 are arranged between the first glass plate 1 and the second glass plate 2, and the area between the first glass plate 1 and the second glass plate 2 is a vacuum chamber 4; wherein, a plurality of color-changing agent printed areas 5 are provided on the inner surface of the first glass plate 1, and a color-changing agent 6 is provided on the color-changing agent printed areas 5, and the number of the color-changing agent printed areas 5 satisfies the following formula:

[0063] The number of color-changing agent printing areas 5 = ROUNDUP (L / √2) × ROUNDUP (W / √2);

[0064] Wherein, L is the length of the first glass plate 1 , in m; W is the width of the first glass plate 1 , in m.

[0065] In this embodiment, the length and width of the first glass plate 1 are 2 m x 1.2 m, respectively, so there are two color-changing agent printed areas 5. The distance between the two color-changing agent printed areas 5 is equal to the shortest distance between the two color-changing agent printed areas 5 and the longitudinal and width edges of the first glass plate 1. The two color-changing agent printed areas 5 are arranged in a straight line.

[0066] In this embodiment, the color-changing agent 6 is methylamine lead iodide (MAPbI3). The thickness of the color-changing agent printing area 5 is 0.1 mm. The color-changing agent printing area 5 is a circular area with a diameter of 5 mm. The first glass plate 1 and the second glass plate 2 are respectively high-aluminum glass. The first glass plate 1 and the second glass plate 2 are respectively physically tempered glass. The thickness of the vacuum chamber 4 is 0.3 mm. The support 3 is a felt column. Several supports 3 are arranged at equal intervals. An exhaust hole 7 and a sealing plate for closing the exhaust hole 7 are provided on the second glass plate 2. The exhaust hole 7 is a cylindrical hole with a diameter of 7 mm. The sealing structure is a sealing structure formed by laser welding.

[0067] The method for preparing the vacuum glass capable of online real-time sealing detection is the same as that in Example 1.

[0068] Example 3

[0069] like Figure 2 As shown, this embodiment provides a vacuum glass capable of online real-time sealing detection, comprising: a first glass plate 1 and a second glass plate 2 arranged parallel to the first glass plate 1, wherein the edges of the first glass plate 1 and the second glass plate 2 are sealed together by a sealing structure, a plurality of supports 3 are arranged between the first glass plate 1 and the second glass plate 2, and the area between the first glass plate 1 and the second glass plate 2 is a vacuum chamber 4; wherein, a plurality of color-changing agent printed areas 5 are provided on the inner surface of the first glass plate 1, and a color-changing agent 6 is provided on the color-changing agent printed areas 5, and the number of the color-changing agent printed areas 5 satisfies the following formula:

[0070] The number of color-changing agent printing areas 5 = ROUNDUP (L / √2) × ROUNDUP (W / √2);

[0071] Wherein, L is the length of the first glass plate 1 , in m; W is the width of the first glass plate 1 , in m.

[0072] In this embodiment, the length and width of the first glass plate 1 are 3m x 2m, respectively, so there are six color-changing agent printed areas 5. The six color-changing agent printed areas 5 are equidistant from each other, and the shortest distances between each of the six color-changing agent printed areas 5 and the longitudinal and width edges of the first glass plate 1 are equal. The six color-changing agent printed areas 5 are arranged in a rectangular shape (3 x 2) with equal spacing along the length and width of the first glass plate 1. The remaining structure, components, materials, and vacuum glass manufacturing method of this embodiment are the same as those of Example 1.

[0073] The vacuum glass of the utility model can be tested for sealing performance online in real time during storage, transportation and use, which is simple and intuitive, with eye-catching test results, and is cheap and efficient.

Claims

1. A vacuum glass capable of online real-time sealing detection, comprising: A first glass plate and a second glass plate arranged parallel to the first glass plate, wherein the edges of the first glass plate and the second glass plate are sealed together by a sealing structure, a plurality of supports are arranged between the first glass plate and the second glass plate, and the area between the first glass plate and the second glass plate is a vacuum chamber, characterized in that: A plurality of color-changing agent printing areas are provided on the inner surface of at least one of the first glass plate and the second glass plate. A color-changing agent is provided on the color-changing agent printing areas, and the number of the color-changing agent printing areas satisfies the following formula: Number of color-changing agent printing areas = ROUNDUP (L / √2) × ROUNDUP (W / √2); Wherein, L is the length of the glass plate having the plurality of color-changing agent printing areas on the inner surface thereof, in m; W is the width of the glass plate having the plurality of color-changing agent printing areas on the inner surface thereof, in m.

2. The vacuum glass capable of online real-time sealing detection according to claim 1, characterized in that: The color-changing agent is an irreversible color-changing agent.

3. The vacuum glass capable of online real-time sealing detection according to claim 1, characterized in that: The color-changing agent is an organic-inorganic hybrid perovskite.

4. The vacuum glass capable of online real-time sealing detection according to claim 1, characterized in that: The thickness of the color-changing agent printing area is 0.1 to 0.4 mm.

5. The vacuum glass capable of online real-time sealing detection according to claim 1, characterized in that: The color-changing agent printing area is a circular area with a diameter of 5 to 20 mm.

6. The vacuum glass capable of online real-time sealing detection according to claim 1, characterized in that: ROUNDUP(L / √2)≥2 or ROUNDUP(W / √2)≥2, the distance between the two or more color-changing agent printing areas and the shortest distance between the two or more color-changing agent printing areas and the lengthwise edge and widthwise edge of the glass plate whose inner surface is provided with several color-changing agent printing areas are equal.

7. The vacuum glass capable of online real-time sealing detection according to claim 1, characterized in that: The first glass plate and the second glass plate are respectively soda-lime glass or high-aluminum glass.

8. The vacuum glass capable of online real-time sealing detection according to claim 1, characterized in that: The first glass plate and the second glass plate are respectively chemically tempered glass or physically tempered glass.

9. The vacuum glass capable of online real-time sealing detection according to claim 1, characterized in that: The thickness of the vacuum chamber is 0.2-0.5 mm.

10. The vacuum glass capable of online real-time sealing detection according to claim 1, characterized in that: The support comprises stainless steel, felt, chrome steel, aluminum alloy or ceramic.

11. The vacuum glass capable of online real-time sealing detection according to claim 1, characterized in that: At least one of the first glass plate and the second glass plate is provided with an exhaust hole and a sealing sheet for sealing the exhaust hole.

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