High-temperature closed environment glass cold air protection device and glass observation window

Abstract

The invention relates to the technical field of high-temperature closed environment visual testing, in particular to a high-temperature closed environment glass cold air protection device and a glass observation window, through the arrangement of a bottom plate, a cover plate, a flow equalizer and other structures, a special cooling channel closed assembly structure is formed, cooling air supplied by an external cooling air source is utilized, and the temperature of the glass cold air protection device is reduced. The cooling airflow passes through the cooling channel, and the airflow direction is changed, so that an equal-thickness air film which flows in a manner of clinging to the inner side surface of the high-temperature-resistant glass is formed, a gas barrier with proper temperature is constructed for the high-temperature-resistant glass, and the thermal stress of the high-temperature-resistant glass is greatly reduced or even eliminated, so that the problem that the high-temperature-resistant glass cannot be damaged under the strong time-varying force-thermal coupling effect is solved; and the problem of instantaneous rupture caused by poor thermal shock of the high-temperature-resistant glass is solved.

Description

Technical Field

[0001] The invention relates to the technical field of high-temperature sealed environment visualization testing, in particular to a high-temperature sealed environment glass cold air protection device and a glass observation window. Background Art

[0002] High-temperature closed environment visualization test is a technology that observes and measures the test object in real time under high temperature and closed conditions. This test technology often combines technologies from multiple fields such as high-temperature environment simulation, optical imaging, image processing and data analysis, providing important experimental means for scientific research, material development, industrial production and other fields. In the field of materials science, high-temperature closed environment visualization test is used to study the physical and chemical properties of materials at high temperatures, such as thermal expansion coefficient, thermal conductivity, oxidation resistance, etc. Through visualization test, the deformation, melting, oxidation and other processes of materials at high temperatures can be observed intuitively, providing an important basis for the development and optimization of materials. In the field of aerospace, high-temperature closed environment visualization test is used to study the performance of aircraft thermal protection materials. By simulating the high-temperature environment encountered by aircraft during high-speed flight, the morphology, deformation, ablation and other key information of thermal protection materials are measured and analyzed in real time, providing strong support for the design and improvement of aircraft. In the energy industry, high-temperature closed environment visualization test is used to study the combustion efficiency and heat transfer performance of burners, boilers and other equipment. The flame morphology, temperature distribution and other parameters in the combustion process can be observed intuitively, providing an important basis for the optimization and improvement of equipment.

[0003] Although high-temperature closed environment visualization testing has wide application value in many fields, it still faces some challenges in practical application. For example, the high-temperature closed environment visualization test method usually uses high-temperature resistant glass as the observation window, which has the advantages of strong high-temperature resistance, infrared transmittance, chemical stability, etc., and can still maintain good stability and mechanical strength under extreme high temperature conditions. It is widely used in optical instruments, industrial testing, medical equipment, aerospace and other fields. However, with the increasingly stringent requirements for the test environment, the temperature continues to increase, the internal and external pressure difference continues to increase, the test time continues to increase, and the test parameters change rapidly. Due to the poor thermal shock resistance of high-temperature resistant glass, it is easy to break instantly under the strong time-varying force-heat coupling. In response to the above problems, the existing method is to increase the thickness of high-temperature resistant glass to resist the instantaneous fragmentation caused by thermal shock, but the increase in the thickness of high-temperature resistant glass is limited, which not only affects the effect of test observation, but also still cannot overcome thermal shock, especially when the observation window area is large, simply increasing the thickness of high-temperature resistant glass still cannot fundamentally solve the above problems. Therefore, how to take reasonable and effective measures and technical means to ensure the normal use of high-temperature resistant glass without affecting the visual test effect is the key to meeting the visual test needs in high-temperature closed environments. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention provides a glass cold air protection device and a glass observation window for a high-temperature airtight environment.

[0005] To achieve the above object, the present invention adopts the following technical solutions: The present invention provides a glass cold air protection device for a high-temperature airtight environment, including a cover plate, a flow equalizer, and a bottom plate; The cover plate is arranged outside the high-temperature resistant glass, and the bottom plate is arranged inside the high-temperature resistant glass; both the cover plate and the bottom plate are provided with observation windows; The flow equalizer is arranged on the cover plate, and the flow equalizer is connected to a cold air source; a flow equalizing channel is arranged inside the flow equalizer, and the flow equalizing channel communicates with the gap between the bottom plate and the high-temperature resistant glass to form a cooling channel, providing cold air cooling for the inner surface of the high-temperature resistant glass.

[0006] Optionally, the flow equalizer includes a cooling air inlet connecting pipe and a flow dividing plate; the input end of the cooling air inlet connecting pipe is connected to a cold air source, and the output end of the cooling air inlet connecting pipe is provided with a cooling air through hole; the flow dividing plate is connected to the output end of the cooling air inlet connecting pipe for evenly dividing the cold air to the inner surface of the high-temperature resistant glass; a flow dividing groove is arranged inside the flow dividing plate, and the flow dividing groove communicates with the cooling air through hole to jointly form the flow equalizing channel.

[0007] Optionally, the flow dividing groove is a trapezoidal flow dividing groove, and the small end of the flow dividing groove communicates with the cooling air through hole.

[0008] Optionally, the cooling air through hole is a strip-shaped through hole, and the length of the strip-shaped through hole is equal to the width of the small end of the flow dividing groove.

[0009] Optionally, a plurality of guide vanes, a plurality of arc-shaped pieces, and a plurality of circular columns are sequentially arranged in the flow dividing groove along the cooling air flow direction.

[0010] Optionally, among the plurality of guide vanes, there are vertical guide vanes perpendicular to the upper edge direction of the flow dividing plate and a plurality of zigzag guide vanes distributed on both sides of the vertical guide vanes, and the zigzag direction of the zigzag guide vanes is close to the vertical guide vanes.

[0011] Optionally, the arc-shaped pieces are arranged with their arcs facing the input end of the flow dividing plate, and the arc-shaped pieces are distributed downstream of the guide vanes in a staggered arrangement; the circular columns are distributed downstream of the arc-shaped pieces in a staggered arrangement, and the distance between adjacent two circular columns is 1.5 to 2.5 times the distance between adjacent two arc-shaped pieces.

[0012] Optionally, an upper sealing gasket is arranged between the cover plate and the high-temperature resistant glass.

[0013] Optionally, a lower sealing gasket is provided between the bottom plate and the high temperature resistant glass, and the lower sealing gasket is a U-shaped gasket, and the U-shaped opening faces a direction close to the flow equalizer.

[0014] The present invention also provides a glass observation window, comprising the above-mentioned high-temperature closed environment glass cold air protection device.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses a cold air protection device for glass in a high-temperature closed environment, comprising a cover plate, a flow equalizer and a bottom plate; the cover plate is arranged on the outer side of the high-temperature resistant glass, and the bottom plate is arranged on the inner side of the high-temperature resistant glass; a cooling channel is formed by arranging a flow equalizer on the cover plate to connect the gap between the bottom plate and the high-temperature resistant glass, and cooling air forms a uniformly distributed air film on the inner side of the high-temperature resistant glass through the cooling channel, which is used to isolate the internal high-temperature environment, build a gas barrier with suitable temperature for the high-temperature resistant glass, greatly reduce or even eliminate the thermal stress of the high-temperature resistant glass, improve the thermal shock capacity of the high-temperature resistant glass, avoid long-term thermal shock of high temperature on the high-temperature resistant glass, thereby effectively avoiding instantaneous rupture caused by strong time-varying mechanical and thermal coupling, ensuring the normal operation of the high-temperature resistant glass, and meeting the testing requirements of long-term, high-temperature and other harsh conditions in different fields, and ensuring the visualization of the test effect.

[0016] The flow equalizer includes a cooling air inlet pipe and a diverter plate; the input end of the cooling air inlet pipe is connected to a cold air source, and the output end of the cooling air inlet pipe is provided with a cooling air through hole to ensure the stability and continuity of the cold air supply and provide a continuous cooling effect for the high-temperature resistant glass; the diverter plate is connected to the output end of the cooling air inlet pipe, and is used to evenly divert the cold air to the inner surface of the high-temperature resistant glass to form a stable cooling air protective film; a diverter groove is provided in the diverter plate, and the diverter groove is connected to the cooling air through hole to form a flow equalization channel together to achieve uniform dispersion of the cold air and lay the foundation for forming a cold air protective film on the inner surface of the high-temperature resistant glass.

[0017] The cooling air through hole is a strip through hole, the length of which is equal to the width of the small end of the diversion groove, which can achieve preliminary dispersion of the cold air, lay the foundation for the subsequent cold air to enter the flow equalizer for further uniform diversion, and at the same time reduce the pressure loss during the flow of the cold air and improve the utilization efficiency of the cold air.

[0018] The diverter slot is provided with a plurality of guide plates, a plurality of arc plates and a plurality of circular columns in sequence along the cooling airflow direction. The arrangement of the guide plates realizes the equal flow distribution of the airflow to the upstream of the arc plates; the arc plates rectify the airflow after the equal flow distribution and transmit it to the downstream circular columns for equal flow, so that the cooling airflow finally outputted is covered on the inner side of the high temperature resistant glass in the form of a uniform cooling air film, thereby further improving the uniformity and stability of the cooling effect.

[0019] An upper sealing gasket is arranged between the cover plate and the high temperature resistant glass to ensure the airtightness of the high temperature resistant glass.

[0020] A lower sealing gasket is arranged between the bottom plate and the high temperature resistant glass. The lower sealing gasket is a U-shaped gasket, and the U-shaped opening is facing the direction close to the flow equalizer. It can not only ensure the airtightness of the flow equalizing channel and the high temperature resistant glass, but also the U-shaped opening can prevent the sealing gasket from blocking the flow equalizing channel, thereby avoiding affecting the circulation of cooling air.

[0021] The present invention provides a glass observation window, including the above-mentioned high-temperature closed environment glass cold air protection device. The glass observation window has better sealing, long-term heat resistance and clear visibility, and is more suitable for high-temperature closed environment visualization testing in the fields of material science, aerospace, new energy, etc., and is also suitable for other high-temperature closed fields, and has strong market competitiveness and practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic cross-sectional structure diagram of a high-temperature closed environment glass cold air protection device.

[0023] Figure 2 The exploded diagram of a high-temperature closed environment glass cold air protection device of the present invention.

[0024] Figure 3 This is an exploded view of a flow equalizer in a high-temperature closed environment glass cold air protection device of the present invention.

[0025] Figure 4 This is a top view of the cooling air inlet pipe in the flow equalizer.

[0026] Figure 5 Schematic diagram of the structure of the diverter plate in the flow equalizer.

[0027] Among them, 100-bottom plate, 200-lower sealing gasket, 300-high temperature resistant glass, 400-upper sealing gasket, 500-cover plate, 600-flow equalizer, 700-side sealing block, 800-side pressure plate, 610-diverter plate, 620-blind plate, 630-left support rib, 640-right support rib, 650-cooling air inlet pipe, 660-diverter groove, 670-cooling air through hole, 661-guide plate, 662-arc plate, 663-circular column. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0030] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0032] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0033] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are understood in a broad sense. For example, it 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The following further elaborates on the present invention with specific embodiments, which is an explanation rather than a limitation of the present invention.

[0035] Example 1 Refer to Figure 1 and Figure 2 , the present invention discloses a glass cold air protection device for a high-temperature sealed environment, which includes a cover plate 500, a flow equalizer 600, and a bottom plate 100; The cover plate 500 is arranged outside the high-temperature resistant glass 300, and the bottom plate 100 is arranged inside the high-temperature resistant glass 300; observation windows are provided on both the cover plate 500 and the bottom plate 100; preferably, an upper sealing gasket 100 is arranged between the cover plate 500 and the high-temperature resistant glass 300; a lower sealing gasket 200 is arranged between the bottom plate 100 and the high-temperature resistant glass 300, and the lower sealing gasket 200 is a U-shaped gasket with the U-shaped opening facing the direction close to the flow equalizer 600.

[0036] The flow equalizer 600 is arranged on the cover plate 500, and the flow equalizer 600 is connected to a cold air source; a flow equalizing channel is arranged inside the flow equalizer 600, and the flow equalizing channel communicates with the gap between the bottom plate 100 and the high-temperature resistant glass 300 to form a cooling channel, providing cold air cooling for the inner surface of the high-temperature resistant glass 300.

[0037] Refer to Figures 3 to 4 , the flow equalizer 600 includes a cooling air inlet connecting pipe 650 and a flow dividing plate 610; the input end of the cooling air inlet connecting pipe 650 is connected to a cold air source, and a cooling air through hole 670 is provided at the output end of the cooling air inlet connecting pipe 650; preferably, the cooling air through hole 670 is a strip-shaped through hole; the flow dividing plate 610 is connected to the output end of the cooling air inlet connecting pipe 650 and is used to evenly distribute cold air to the inner surface of the high-temperature resistant glass 300; a flow dividing groove 660 is arranged inside the flow dividing plate 610, and the flow dividing groove 660 communicates with the cooling air through hole 670 to jointly form a flow equalizing channel; preferably, the flow dividing groove 660 is a trapezoidal flow dividing groove, the small end of the flow dividing groove 660 communicates with the cooling air through hole 670, and the width of the small end of the flow dividing groove 660 is equal to the length of the strip-shaped through hole.

[0038] Refer to Figure 5, a plurality of guide vanes 661, a plurality of arc-shaped sheets 662, and a plurality of circular columns 663 are sequentially arranged in the diversion groove 660 along the direction of the cooling air flow; among the plurality of guide vanes 661, there are vertical guide vanes perpendicular to the upper edge direction of the diversion plate 610 and a plurality of zigzag guide vanes distributed on both sides of the vertical guide vanes, and the zigzag direction of the zigzag guide vanes is close to the vertical guide vanes; the arc of the arc-shaped sheet 662 faces the input end of the diversion plate 610, and the arc-shaped sheets 662 are distributed downstream of the guide vanes 661 in a staggered and interspersed arrangement; the circular columns 663 are distributed downstream of the arc-shaped sheets 662 in a staggered and interspersed arrangement, and the distance between two adjacent circular columns 663 is 1.5 to 2.5 times the distance between two adjacent arc-shaped sheets 662.

[0039] When working, connect the cooling air source, make the cooling air flow evenly through the three-stage turbulence structure of the flow equalizer 600, form a uniformly distributed air film on the inner side surface of the high-temperature resistant glass 300, isolate the internal high-temperature environment, build a gas barrier with a suitable temperature for the high-temperature resistant glass 300, greatly reduce or even eliminate the thermal stress of the high-temperature resistant glass 300, improve the thermal shock resistance of the high-temperature resistant glass 300, avoid the long-term thermal shock of the high-temperature resistant glass 300 by high temperature, thereby effectively avoiding the instantaneous rupture under the strong time-varying force-thermal coupling effect, ensuring the normal operation of the high-temperature resistant glass, meeting the test requirements of long-time and high-temperature and other harsh conditions in different fields, and ensuring the visualization of the test effect.

[0040] Embodiment 2 See Figure 1 and Figure 2 , the present invention discloses a glass cold air protection device for a high-temperature sealed environment, including a bottom plate 100, a lower sealing gasket 200, a high-temperature resistant glass 300, an upper sealing gasket 400, a cover plate 500, a flow equalizer 600, a side sealing block 700, and a side pressing plate 800; The cover plate 500 is arranged outside the high-temperature resistant glass 300, and the bottom plate 100 is arranged inside the high-temperature resistant glass 300; both the cover plate 500 and the bottom plate 100 are provided with observation windows; the flow equalizer 600 is arranged on the cover plate 500, and the flow equalizer 600 is connected to a cold air source; a flow equalizing channel is arranged inside the flow equalizer 600, and the flow equalizing channel communicates with the gap between the bottom plate 100 and the high-temperature resistant glass 300 to form a cooling channel to provide cold air cooling for the inner surface of the high-temperature resistant glass 300.

[0041] The upper sealing gasket 400 is located between the cover plate 500 and the high-temperature resistant glass 300; the lower sealing gasket 200 is located between the bottom plate 100 and the high-temperature resistant glass 300; the upper sealing gasket 400 is in a loop structure, and the lower sealing gasket 200 is in a U-shaped structure with the same width and thickness as the upper sealing gasket 400. The opening of the U-shaped structure faces the flow direction of the cooling air flow. The hollow parts of the loop structure and the U-shaped structure correspond to the observation window.

[0042] For the cover plate 500, except for the connecting side with the flow equalizer 600, a number of bolt holes are provided on the other three sides; corresponding to the bolt holes on the cover plate 500, bolt holes of the same specification are provided on the bottom plate 100; grooves are provided on the opposite surfaces of the cover plate 500 and the bottom plate 100 for installing the high-temperature resistant glass 300; the upper sealing gasket 400 and the lower sealing gasket 200 are both located in the corresponding grooves. The groove width of the groove is 0.1 - 0.5 mm larger than the width of the lower sealing gasket 200. Preferably, the sum of the grooving depths of the grooves on the bottom plate 100 and the cover plate 500 is 0.2 - 0.8 mm smaller than the sum of the overall thicknesses of the lower sealing gasket 200, the high-temperature resistant glass 300, and the upper sealing gasket 400. The specific value depends on the deformation amounts of the upper sealing gasket 400 and the lower sealing gasket 200; during installation, bolts pass through the bolt holes of the cover plate 500 and the bottom plate 100, and relying on the pre-tightening force of the bolts, the upper sealing gasket 400 and the lower sealing gasket 200 are slightly deformed to complete the sealing of the high-temperature resistant glass 300. The bottom corners of the groove on the bottom plate adopt a large arc transition, which is beneficial to the change of the air flow direction; considering the deformation during the compression of the sealing gasket, the grooving widths of the other three sides of the groove are 0.1 - 0.5 mm larger than the width of the lower sealing gasket 200.

[0043] The width of the side pressing plate 800 is equal to the width of the bottom plate 100 after grooving on the left side, and the length is equal to the width of the bottom plate 100. The side pressing plate 800 is provided with a number of bolt holes. The side pressing plate 800 is fixedly connected to the left side of the bottom plate 100 by bolts, and a groove is provided on the side of the side pressing plate 800 close to the flow equalizer 600.

[0044] The side sealing block 700 is placed in the groove of the side pressing plate 800. The side pressing plate 800 contacts the blind plate 620 of the flow equalizer 600, and relying on the pre-tightening force of the bolt connection with the bottom plate 100, the side sealing block 700 is slightly deformed to achieve sealing. The length of the side sealing block 700 is 0.1 - 0.5 mm smaller than the groove length. The grooving width of the side pressing plate 800 is 0.1 - 0.5 mm larger than the width of the side sealing block 700, and the grooving depth is 0.2 - 0.8 mm smaller than the depth of the side sealing block 700.

[0045] See Figure 3 and Figure 4, the lower end of the flow distributor plate 610 of the flow equalizer 600 is welded to the left side of the cover plate 500. The length of the flow distributor plate 610 is the same as the width of the cover plate 500. The flow equalizer 600 includes a flow distributor plate 610, a blind plate 620, a left support rib 630, a right support rib 640, and a cooling air inlet pipe 650; a strip-shaped cooling air through hole 670 is opened at the bottom of the cooling air inlet pipe 650; a flow distribution groove 660 is opened on the flow distributor plate 610. The flow distribution groove 660 is a trapezoidal groove. The width of the input end of the trapezoidal groove, that is, the width of the small end, is equal to the strip length of the cooling air through hole 670; a straight groove section is provided on the flow distributor plate 610 at the lower end of the trapezoidal groove. The straight groove section is connected to the large end of the trapezoidal groove. The height of the straight groove section is the same as the edge thickness of the cover plate 500, and the length of the straight groove section is the same as the width of the observation window in the upper sealing gasket 400; the flow distributor plate 610 and the blind plate 620 are first welded to form a complete channel; the input end of the flow distributor plate 610 is welded to the cooling air inlet pipe 650 to realize the connection of the flow channels; the left support rib 630 and the right support rib 640 are respectively located on both sides of the flow distributor plate 610 and are used to fix the blind plate 620, the flow distributor plate 610, and the cooling air inlet pipe 650. Preferably, the fixing method is welding. The left support rib 630 and the right support rib 640 can improve the connection strength and stiffness of the flow equalizer 600.

[0046] See Figure 5 , a three-stage flow disturbance structure composed of a flow guide piece 661, an arc piece 662, and a circular column 663 is arranged in the trapezoidal groove of the flow distributor plate 610. In the direction perpendicular to the upper and lower bottom edges of the flow distributor plate 610, the ratio of the regional lengths of the flow guide piece 661, the arc piece 660, and the circular column 663 is 1:1:3; among the several flow guide pieces 661, there are vertical flow guide pieces perpendicular to the upper edge direction of the flow distributor plate 610 and several zigzag flow guide pieces distributed on both sides of the vertical flow guide piece. The zigzag direction of the zigzag flow guide piece is close to the vertical flow guide piece, and the zigzag is parallel to the side lines of the trapezoidal groove, that is, the flow distribution groove 660. To achieve equal flow distribution of the air flow, the upper and lower ends of the flow guide piece 661 are arranged at equal intervals in the horizontal direction at the positions where they are located in the flow distribution groove 660; the arc piece 662 is crescent-shaped, and the two ends of the crescent are transitioned by arcs. It is distributed downstream of the flow guide piece 661 in a staggered and interspersed arrangement to achieve the rectification of the air flow; the diameter of the circular column 663 is the same as the projection width of the arc piece 662 in the horizontal direction, and it is also distributed downstream of the arc piece 662 in a staggered and interspersed arrangement to achieve the equalization of the air flow; the distance between two adjacent circular columns 663 is 1.5 to 2.5 times the arrangement distance of the arc pieces 662. The specific number and arrangement distance of the flow guide piece 661, the arc piece 662, and the circular column 663 are determined according to the actual trapezoidal groove size and resistance requirements.

[0047] Preferably, the upper sealing gasket 400, the lower sealing gasket 200, and the side sealing block 700 are all made of high-temperature resistant materials, which can play a good sealing role under the actual temperature conditions of use.

[0048] Preferably, the cold air source is a gas such as air, nitrogen, or carbon dioxide, and the gas temperature range is 20°C to 50°C.

[0049] Preferably, the temperature range of the high-temperature sealed environment applicable to the high-temperature sealed environment glass cold air protection device is 300°C to 2000°C.

[0050] The present invention also provides a glass observation window, including the above-mentioned high-temperature sealed environment glass cold air protection device. This glass observation window has better sealing performance, long-term heat resistance, and clear visibility, and is more suitable for visual testing of high-temperature sealed environments in fields such as materials science, aerospace, and new energy. At the same time, it is applicable to other high-temperature sealed fields, with strong market competitiveness and practical value.

[0051] In summary, the present invention provides a high-temperature sealed environment glass cold air protection device and a glass observation window. Through the settings of structures such as the bottom plate 100, the cover plate 500, and the flow equalizer 600, a cooling channel with a special structure is formed. By using the cooling air supplied by an external cooling air source, the cooling air flows through the cooling channel, and the air flow direction changes, forming an equal-thickness air film that flows closely along the inner side surface of the high-temperature resistant glass 300, constructing a gas barrier with a suitable temperature for the high-temperature resistant glass 300, and greatly reducing or even eliminating the thermal stress of the high-temperature resistant glass 300, so as to solve the problem of instantaneous rupture caused by the poor thermal shock resistance of the high-temperature resistant glass 300 under the strong time-varying force-thermal coupling effect.

[0052] The above are only the preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention in any way. Those skilled in the art should understand that without departing from the spirit and principles of the present invention, the technical solutions can be modified and replaced simply in several ways, and these modifications and replacements also fall within the protection scope covered by the claims.

Claims

1. A high temperature closed environment glass cold air protection device, characterized in that: It comprises a cover plate (500), a flow equalizer (600) and a bottom plate (100); The cover plate (500) is arranged on the outside of the high temperature resistant glass (300), and the bottom plate (100) is arranged on the inside of the high temperature resistant glass (300); both the cover plate (500) and the bottom plate (100) are provided with observation windows; The flow equalizer (600) is arranged on the cover plate (500), and the flow equalizer (600) is connected to a cold air source; a flow equalizing channel is arranged inside the flow equalizer (600), and the flow equalizing channel is connected to the gap between the bottom plate (100) and the high-temperature resistant glass (300) to form a cooling channel, thereby providing cold air cooling for the inner surface of the high-temperature resistant glass (300).

2. The high temperature closed environment glass cold air protection device according to claim 1, characterized in that: The flow equalizer (600) comprises a cooling air inlet pipe (650) and a flow divider plate (610); the input end of the cooling air inlet pipe (650) is connected to a cold air source, and the output end of the cooling air inlet pipe (650) is provided with a cooling air through hole (670); the flow divider plate (610) is connected to the output end of the cooling air inlet pipe (650) and is used to evenly divide the cold air to the inner surface of the high temperature resistant glass (300); a flow divider groove (660) is provided in the flow divider plate (610), and the flow divider groove (660) is connected to the cooling air through hole (670) to form a flow equalization channel.

3. The high temperature closed environment glass cold air protection device according to claim 2, characterized in that: The diverter groove (660) is a trapezoidal diverter groove, and the small end of the diverter groove (660) is connected to the cooling air through hole (670).

4. The high temperature closed environment glass cold air protection device according to claim 3, characterized in that: The cooling air through hole (670) is a strip-shaped through hole, and the length of the strip-shaped through hole is equal to the width of the small end of the diversion groove (660).

5. The high temperature closed environment glass cold air protection device according to any one of claims 2 to 4, characterized in that: The flow dividing groove (660) is provided with a plurality of guide plates (661), a plurality of arc-shaped plates (662) and a plurality of circular columns (663) in sequence along the cooling air flow direction.

6. The high temperature closed environment glass cold air protection device according to claim 5, characterized in that: The plurality of guide plates (661) include a vertical guide plate perpendicular to the upper edge direction of the diverter plate (610) and a plurality of folded-line guide plates distributed on both sides of the vertical guide plate, wherein the folded-line direction of the folded-line guide plate is close to the vertical guide plate.

7. The high temperature closed environment glass cold air protection device according to claim 5, characterized in that: The arc of the arc-shaped sheet (662) faces the input end of the diverter plate (610), and the arc-shaped sheet (662) is distributed downstream of the guide sheet (661) in a staggered arrangement; the circular columns (663) are distributed downstream of the arc-shaped sheet (662) in a staggered arrangement, and the spacing between two adjacent circular columns (663) is 1.5 to 2.5 times the spacing between two adjacent arc-shaped sheets (662).

8. The high temperature closed environment glass cold air protection device according to claim 1, characterized in that: An upper sealing gasket (400) is provided between the cover plate (500) and the high temperature resistant glass (300).

9. The high temperature closed environment glass cold air protection device according to claim 1, characterized in that: A lower sealing gasket (200) is provided between the bottom plate (100) and the high temperature resistant glass (300), wherein the lower sealing gasket (200) is a U-shaped gasket, and the U-shaped opening faces a direction close to the flow equalizer (600).

10. A glass observation window, characterized in that: The invention comprises the high-temperature closed environment glass cold air protection device as described in any one of claims 1 to 9.

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