A blast-resistant window for ventilation

Abstract

The application relates to a blast-resistant protective window body for ventilation, comprising a frame body configured as a coverless box body with an opening, a plurality of first ventilation openings uniformly arranged on the bottom plate of the frame body, and a movable plate covering the opening, wherein a plurality of second ventilation openings corresponding to the first ventilation openings are arranged on the movable plate. The movable plate is arranged to be capable of moving from an initial first position to a second position close to the bottom plate under the action of external force. A control system is further arranged on the frame body, which is arranged to be capable of fixing the movable plate at the first position and moving the movable plate from the first position to the second position after an explosion accident occurs. A closing assembly is further connected between the movable plate and the bottom plate, which is arranged to keep the first ventilation openings unblocked when the movable plate is at the first position and to close the first ventilation openings when the movable plate is at the second position.

Description

Technical Field

[0001] This invention relates to the field of safety engineering, and more specifically to a protective window for ventilation and explosion protection. Background Technology

[0002] With the rapid development of industries such as oil and chemical and natural gas, the scale, integration, complexity, and intelligence of processing and production equipment are constantly increasing. However, the increasing size, integration, and complexity of the equipment inevitably increases the difficulty of disaster prevention and mitigation. At the same time, intelligence can also increase the risk of accidents, resulting in frequent major explosions and causing serious loss of life and property.

[0003] To reduce the harm caused by explosions, explosion-proof devices are usually installed between the explosion source and the workers during the production process.

[0004] Most current explosion-proof devices primarily consider the explosion-proof performance of the structure, making it difficult to meet the on-site ventilation, smoke extraction, and exhaust requirements. Therefore, existing devices typically use air conditioners and exhaust fans for smoke extraction and exhaust.

[0005] However, air conditioners or exhaust fans with smoke and gas exhaust functions can reduce explosion-proof and explosion-suppression performance, thus posing a significant safety threat to people inside buildings. Furthermore, the damage to air conditioners and exhaust fans caused by an explosion can result in even greater economic losses or repair costs.

[0006] On the other hand, the destructive shockwave generated during an explosion spreads rapidly. To minimize the impact of an explosion, it is necessary to maximize the reaction speed of explosion-proof devices, enabling them to respond quickly at the first moment of an explosion. However, existing explosion-proof devices often have slow reaction speeds, making it difficult to provide timely protection against explosions and thus hindering the effective reduction of economic losses following an explosion.

[0007] To address the aforementioned issues, patent CN112943060A discloses a double-layered explosion-proof window that is easy to install. This double-layered explosion-proof window includes an outer explosion-proof window body, an inner explosion-proof window body, and damping energy-absorbing devices. The inner explosion-proof window body includes an inner explosion-proof window frame and inner explosion-proof glass installed on the inner explosion-proof window frame. The outer explosion-proof window body includes an outer explosion-proof window frame and outer explosion-proof glass installed on the outer explosion-proof window frame. The bottom end of the outer explosion-proof window body is hinged to the front end of the bottom end of the inner explosion-proof window body. The top end of the outer explosion-proof window frame is connected to the top end of the inner explosion-proof window frame via several damping energy-absorbing devices, or the left and right ends of the outer explosion-proof window frame are respectively connected to the left and right ends of the inner explosion-proof window frame via several damping energy-absorbing devices. When the double-layered explosion-proof window is subjected to an explosive impact, the outer explosion-proof window body rotates along its bottom end and can seal the portion enclosed by the inner explosion-proof window frame of the inner explosion-proof window body.

[0008] The double-layered explosion-proof window of this invention is based on a traditional window, essentially adding a movable connecting rod to the window sash. It achieves its explosion-proof effect based on the mechanism of the window sash automatically closing due to an explosion wave. However, this type of double-layered explosion-proof window has a relatively slow reaction speed, making it difficult for the window sash to close quickly. Furthermore, the main material of this double-layered explosion-proof window is glass, resulting in a relatively low ultimate load-bearing capacity.

[0009] In addition, CN110159814A invention patent provides an explosion-proof valve. The explosion-proof valve includes a valve body having a valve cavity and two valve ports located on two opposite sides of the valve cavity. The two long sidewalls of the valve cavity connecting the two valve ports are convex arc-shaped walls. It also includes a valve leaf and two sets of springs placed within the valve cavity. The valve leaf is slidably disposed, and the outer surfaces of the valve leaf opposite to the two long sidewalls of the valve cavity are arc-shaped. The two sets of springs are respectively located between the valve leaf and the two valve ports, positioning the valve leaf in the middle of the valve cavity to allow the two valve ports to communicate.

[0010] The explosion-proof valve of the present invention can resist explosions in both directions and reset in both directions. When subjected to an impact force, the impact force acts on the valve leaf, compresses one of the springs and moves to the corresponding valve port, thereby causing the valve leaf to seal the valve port. When the impact force disappears, the valve leaf resets to the middle of the valve cavity under the action of the spring, so that the two valve ports are connected.

[0011] The explosion-proof valve of this invention has a high response speed and good explosion-proof performance under protective steady state, but poor ventilation performance under normal steady state, which cannot fully meet the needs of explosion-proof windows. Summary of the Invention

[0012] To address the technical problems described above, this invention aims to provide a protective window for ventilation and explosion protection. This protective window effectively meets the ventilation and exhaust requirements of the work site while reducing economic losses after an explosion.

[0013] According to the present invention, a protective window for ventilation and explosion protection is provided, comprising a frame, the frame being constructed as an open, lidless box with an opening, a plurality of first ventilation openings being evenly arranged on the bottom plate of the frame, and a movable plate covering the openings, the movable plate being provided with second ventilation openings corresponding one-to-one with the first ventilation openings, the movable plate being configured to be able to move from an initial first position to a second position close to the bottom plate under the action of an external force.

[0014] The frame is also equipped with a control system, which is configured to fix the movable plate in a first position and, after an explosion, move the movable plate from the first position to a second position.

[0015] A sealing component is also connected between the movable plate and the base plate. The sealing component is configured to keep the first vent open when the movable plate is in the first position and to close the first vent when the movable plate is in the second position.

[0016] In a preferred embodiment, the control system includes a first magnet and a second magnet arranged opposite to each other, capable of magnetically attracting the movable plate, and a control element.

[0017] A first gap is formed between the first magnet and the second magnet, and the movable plate can extend into the first gap so that it can be fixed in a first position under the combined action of the first magnet and the second magnet. The control element is configured to cut off the force between the first magnet and the movable plate after an explosion, causing the movable plate to move from the first position to a second position that is close to the second magnet.

[0018] In a preferred embodiment, the first magnet is configured as an electromagnet connected to a power source via a wire, the second magnet is configured as a permanent magnet, and the control element is configured to cut off the wire after an explosion occurs, thereby shutting down the electromagnet.

[0019] In a preferred embodiment, the control element is configured as a rotating plate connected to the side of the movable plate away from the base plate, the rotating plate being hinged to the movable plate so as to be able to rotate toward the movable plate in the event of an explosion.

[0020] The wire is positioned to abut against the side of the rotating plate near the movable plate.

[0021] In a preferred embodiment, the arrangement of the plurality of rotating plates corresponds one-to-one with the plurality of second ventilation openings.

[0022] The rotating plate is designed to close the second ventilation opening when rotated to a position that is in close contact with the movable plate.

[0023] In a preferred embodiment, multiple rotating plates located in the same horizontal direction are connected to each other to form a long strip, so that the multiple rotating plates located in the same horizontal direction can move synchronously.

[0024] The rotating plate is also connected to a series rod arranged in the vertical direction, so that multiple rotating plates located in the vertical direction can move synchronously.

[0025] In a preferred embodiment, an elastic element is further provided between the movable plate and the second magnet.

[0026] The first magnet is configured to have a greater adsorption force than the second magnet, so that the elastic element is in a stretched state when the movable plate is in the first position.

[0027] In a preferred embodiment, the closure component is configured as a deformable element connected between the movable plate and the base plate, capable of deforming under the action of the movable plate.

[0028] In a preferred embodiment, the deformable element is configured as a plurality of deformable hinges connected to each other by hinges, the hinges being prismatic in shape and arranged in a vertical direction.

[0029] In a preferred embodiment, protective nets are also fitted onto the outer sides of the frame and the movable plate, respectively.

[0030] In a preferred embodiment, the frame, movable plate, and enclosure assembly are made of steel, aluminum, resin, or PLA material.

[0031] In a preferred embodiment, structural reinforcements are further provided on the inner walls of the frame, movable plate, and enclosed assembly.

[0032] The protective window for ventilation and explosion protection of the present invention can automatically close immediately in the event of an explosion, thereby effectively improving the response rate of protection, reducing the harm caused by the explosion, and reducing economic losses.

[0033] At the same time, in the absence of an explosion, the protective window of the present invention for ventilation and explosion resistance can also have good ventilation performance. Attached Figure Description

[0034] The present invention will now be described with reference to the accompanying drawings.

[0035] Figure 1 A schematic diagram of a ventilation explosion-proof protective window according to an embodiment of the present invention is shown.

[0036] Figure 2 for Figure 1 The diagram shows the connection between the frame and the movable panel of the protective window used for ventilation and explosion protection.

[0037] Figure 3 for Figure 1 The diagram shows a closure assembly for a ventilation and explosion-proof protective window.

[0038] Figure 4 for Figure 1 The diagram shown illustrates the connection between the control system of the ventilation and explosion-proof protective window and the frame.

[0039] In this application, all drawings are schematic and are used only to illustrate the principles of the invention, and are not drawn to scale. Detailed Implementation

[0040] The invention will now be described with reference to the accompanying drawings.

[0041] Figure 1 A schematic diagram of a ventilated explosion-proof protective window 100 according to an embodiment of the present invention is shown. Figure 1 As shown, the protective window 100 for ventilation and explosion protection includes a frame 10. The frame 10 is constructed as an open box with an opening 12. A plurality of first ventilation openings 15 are also evenly arranged on the base plate 13 of the frame 10.

[0042] Meanwhile, the protective window 100 for ventilation and explosion protection also includes a movable plate 20 disposed at one end of the frame 10 near the opening 12. The movable plate has second ventilation openings 25 corresponding one-to-one with the positions of the first ventilation openings 15. Thus, when the frame is connected to the movable plate 20, the first ventilation openings 15 can communicate with the second ventilation openings 25.

[0043] Figure 2 for Figure 1 The diagram shows the connection between the frame 10 and the movable plate 20 of the ventilated explosion-proof protective window 100. Figure 2 As shown, a plurality of grip plates 16 are also provided on the outer wall of the frame 10 near the opening 12.

[0044] Preferably, four grip plates 16 are provided, and the four grip plates 16 are respectively located near the top corner 11 of the frame 10. At the same time, a first gap 162 is formed between the grip plate 16 and the frame 10, so that the movable plate 20 can be inserted between the grip plate 16 and the frame 10, thereby being able to be connected to the frame 10.

[0045] In this invention, the width of the first gap 162 is set to be greater than the width of the grip plate 16. This setting allows the movable plate 20 to move within the first gap 162 under external force, thereby moving from an initial first position to a second position closer to the frame 10, thus reducing the distance between the movable plate 16 and the base plate 13.

[0046] like Figure 2 As shown, a sealing component 30 is also provided between the movable plate 20 and the base plate 13. Both ends of the sealing component are respectively fixedly connected to the movable plate 20 and the base plate 13. The sealing component 30 is configured to keep the first vent 15 unobstructed when the movable plate 16 is in the first position. Furthermore, when the movable plate 20 moves from the first position to the second position under the action of an external force, it can close the first vent 15.

[0047] Figure 3 for Figure 1 This diagram illustrates the sealing assembly 30 of a ventilation and explosion-proof protective window 100. Figure 3 As shown, the enclosing component 30 is configured as a plurality of deformable elements 31 connected between the movable plate 20 and the base plate 13. The deformable elements 31 can deform under the action of the movable plate 20, thereby changing their cross-sectional area.

[0048] Since the deformable element 31 is disposed between the movable plate 20 and the base plate 13, as the cross-sectional area of ​​the deformable element 32 gradually increases, the first vent 15 will gradually be covered by the deformable element 31, thereby reducing the area of ​​the first vent 15 and the second vent 25 that are connected to each other, until the first vent 15 is completely covered.

[0049] Similarly, as the cross-sectional area of ​​the deformable element 32 gradually decreases, the area of ​​the first vent 15 and the second vent 25 that are connected will gradually increase until the first vent 15 and the second vent 25 are completely unobstructed.

[0050] In summary, by controlling the cross-sectional area of ​​the deformable element 32, the first vent 15 can be opened or closed.

[0051] like Figure 3 As shown, the deformable element 31 can be configured as a hinge plate 32, for example. The hinge plate 32 is constructed in a prism shape and arranged in a vertical direction. The plurality of plates 321 constituting the hinge plate 32 are interconnected by hinges 322.

[0052] It is easy to understand that as the movable plate 20 moves from its initial first position to a second position closer to the frame 10, the hinge plate 32 will be gradually compressed. As this process continues, the cross-sectional dimension of the hinge plate 32 in the direction perpendicular to the base plate 13 will decrease, and the cross-sectional dimension in the direction parallel to the base plate 13 will increase.

[0053] As the cross-sectional dimension of the hinge plate 32 in the direction parallel to the base plate 13 gradually increases, the first vent 15 can be gradually covered by the hinge plate 32 until the movable plate 20 reaches the second position, at which point the first vent 15 will be completely closed.

[0054] Furthermore, by controlling the initial first position of the movable plate 20, the distance between the movable plate 20 and the base plate 13 in the initial state can be controlled, thereby controlling the size of the hinge plate 32 and adjusting the size of the first vent 15. This allows the ventilation volume of the first vent 15 to be adjusted according to the actual needs of the site.

[0055] like Figure 3 As shown, when the movable plate 20 is in the first position, a gap 325 is formed between any two adjacent hinge plates 32. The gap 325 prevents the hinge plates 32 from touching, thereby hindering the normal deformation of the hinge plates 32.

[0056] In this invention, the frame 10, the movable plate 20, and the sealing assembly 30 are all made of steel, aluminum, resin, or PLA. These materials all possess high strength and stability. Thus, when the first ventilation opening 15 is closed, the protective window 100 for ventilation and explosion resistance has certain explosion-proof and impact-resistant properties, thereby providing a protective effect.

[0057] Furthermore, by adjusting the dimensions and materials of the frame 10, movable plate 20, and enclosing component 30, the explosion-proof and impact-resistant performance of the protective window 100 used for ventilation and explosion resistance can be adjusted to meet the actual requirements on site.

[0058] In an embodiment not shown, structural reinforcements are further provided inside the frame, movable plate, and enclosing assembly. These structural reinforcements may be, for example, steel bars or other high-strength metal materials. These structural reinforcements further increase the overall strength of the ventilation and explosion-proof protective window 100, thereby improving its explosion-proof and impact-resistant performance.

[0059] like Figure 1As shown, the protective window 100 for ventilation and explosion resistance also includes a control system 40 connected to the frame 10. The control system 40 is configured to fix the movable plate 20 in an initial first position and, after an explosion, move the movable plate 20 from the first position to a second position, thereby automatically closing the first ventilation opening 15 after the explosion.

[0060] Figure 4 for Figure 1 The diagram shows the connection between the control system 40 of the ventilation and explosion-proof protective window 100 and the frame 10. (See diagram below.) Figure 4 As shown, grooves 42 are respectively provided on the side plates 14 at both ends of the bottom plate 13 of the frame 10. The control system 40 includes a first component 44 and a second component 46 simultaneously disposed in the grooves 42.

[0061] Specifically, such as Figure 4 As shown, the first component 44 includes a first magnet 421 located away from the base plate 13 within a groove 42 and a second magnet 422 located near the base plate 13. The first magnet 421 and the second magnet 422 are arranged opposite to each other, thereby forming a second gap 424 between the first magnet 421 and the second magnet 422.

[0062] like Figure 1 As shown, when the movable plate 20 is connected to the frame 10, it can extend into the second gap 424, thereby positioning the movable plate 20 between the first magnet 421 and the second magnet 422. At this time, the first magnet 421 and the second magnet 422 can respectively apply a set of magnetic attraction forces in opposite directions to the movable plate 20. Under the action of these magnetic attraction forces, the movable plate 20 is fixed within the second gap 424.

[0063] It should be noted that the second component 46 has the same structure as the first component 44, and a detailed description of it is omitted here.

[0064] In this way, through the combined action of the first component 44 and the second component 46, the two ends of the movable plate 20 can be fixed respectively, so that the movable plate 20 can be fixed at the first position by the first component 44 and the second component 46.

[0065] like Figure 1 As shown, the control system 40 further includes a control element 48 connected to the first component 44 and the second component 46. The control element 48 is configured to cut off the force between the first magnet 421 and the movable plate 20 after an explosion, causing the movable plate 20 to move from an initial first position to a second position close to the second magnet 422.

[0066] Specifically, such as Figure 1 As shown, the first magnet 421 is an electromagnet, which is connected to a power source (not shown) via a wire 425. Meanwhile, the second magnet 422 is a permanent magnet. The control element 48 is configured as a rotating plate 485 connected to the side of the movable plate 20 away from the base plate 13. The rotating plate 485 is hinged to the movable plate 20, allowing it to rotate towards the movable plate 20 under the impact of an explosion.

[0067] Meanwhile, the wire 425 is positioned to abut against the side of the rotating plate 485 closest to the movable plate 20. Therefore, when the rotating plate 485 rotates towards the movable plate 20 under the impact of an explosion, the wire 425 can bend towards the movable plate 20 under the influence of the rotating plate 485, thereby causing the rotating plate 485 to break the wire 425.

[0068] When the wire 425 is broken, the connection between the first magnet 421 and the power supply is cut off. At this time, the first magnet 421 will be turned off due to the power failure, thus losing its magnetic attraction to the movable plate 20. Therefore, the movable plate 20 is only affected by the second magnet 422. Since the second magnet 421 is located on the side of the movable plate 20 closer to the base plate 13, the movable plate 20 will move from its initial first position toward the base plate 13 until it moves to a second position that is in close contact with the second magnet 422.

[0069] During this movement, the distance between the movable plate 20 and the base plate 13 decreases, causing the hinge plate 32 to be squeezed. As this squeezing process continues, the first vent 15 will gradually be covered by the hinge plate 32 until the movable plate 20 reaches the second position, at which point the first vent 15 will be completely closed.

[0070] In summary, at the moment of the explosion, the impact force of the explosion can immediately shut off the first magnet 421, thereby ensuring that the first ventilation opening 15 is quickly sealed, so that the protective window 100 used for ventilation and explosion protection can play an explosion-proof role immediately.

[0071] This design increases the precious reaction time of the explosion-proof device, helping to reduce the harm of explosion accidents. It also ensures that the protective window 100 for ventilation and explosion protection can automatically activate after an explosion, increasing automation and further improving the reaction rate of the protective window 100.

[0072] Furthermore, this self-starting mechanism eliminates the need for monitoring devices such as temperature or mechanical sensors, which not only simplifies the structure and reduces costs, but also avoids the uncertainties caused by the failure or inaccuracy of monitoring devices such as temperature or mechanical sensors, thereby improving the reliability of the entire ventilation and explosion-proof protective window 100.

[0073] In addition, the protective window 100 for ventilation and explosion protection of the present invention can keep the first ventilation opening 15 and the second ventilation opening 25 in a state of ventilation when no explosion occurs, thereby meeting the ventilation and exhaust requirements on site without exhaust equipment or other types of ventilation devices, thereby improving the ventilation performance of the protective window 100 for ventilation and explosion protection of the present invention.

[0074] Furthermore, by adjusting the initial first position of the movable plate 20 or adjusting the size and angle of the hinge plate 32, the area covered by the hinge plate 32 of the first vent 15 can be adjusted, thereby adjusting the ventilation volume of the first vent 15 when no explosion occurs. This arrangement helps to better meet the environmental requirements at the site.

[0075] like Figure 1 As shown, in a preferred embodiment, an elastic element 50 is further provided between the movable plate 20 and the frame 10. In this invention, the elastic element 50 can be, for example, a spring. Both ends of the elastic element 50 are fixed to the movable plate 20 and the frame 10 respectively by bolts 52, so that the movable plate and the frame are connected by the elastic element 50. Simultaneously, the first magnet 421 is configured to have an attractive force greater than that of the second magnet 422, so that when the movable plate 20 is in the first position, the elastic element 50 is in a stretched state.

[0076] Therefore, when the first magnet 421 fails, the movable plate 20 will be subjected to both the magnetic attraction force of the second magnet 422 and the tension force of the elastic element 50. Furthermore, this tension force of the elastic element 50 is directed towards the base plate 13, thereby strengthening the magnetic attraction force of the second magnet 422.

[0077] This configuration allows for a further increase in the movement speed of the movable plate 20 after an explosion, thereby improving the reaction time of the entire ventilation and explosion-proof protective window 100.

[0078] In a preferred embodiment, multiple rotating plates 485 are provided, and the positions of the multiple rotating plates 485 correspond one-to-one with the positions of the multiple second ventilation openings 25. Furthermore, the shape of each rotating plate 485 is adapted to fit the shape of the second ventilation opening 25, so that when the rotating plate 485 rotates to a position close to the movable plate 20, it can close the second ventilation opening 25.

[0079] It is easy to understand that when the second vent 25 is closed, the connection between the protective window 100 used for ventilation and explosion protection and the explosion source can be further cut off, thereby further improving the impact and explosion protection effect of the protective window 100 used for ventilation and explosion protection of this invention.

[0080] like Figure 1 As shown, in a preferred embodiment, multiple rotating plates 485 located in the same horizontal direction are interconnected to form an elongated shape. This arrangement enables the multiple rotating plates 485 located in the same horizontal direction to move synchronously.

[0081] Meanwhile, a series rod 488 arranged vertically is also connected to the rotating plate 485. Through the series action of the series rod 488, multiple rotating plates 485 located in the vertical direction can move synchronously.

[0082] Therefore, when an explosion occurs, the connecting rod 488 can ensure that the multiple second ventilation openings 25 can be closed simultaneously, thereby helping to improve the stability of the protective window 100 for ventilation and explosion resistance of this invention.

[0083] Since the rotating plate 485 and the connecting rod 488 will move synchronously after the explosion, in a preferred embodiment, the wire 425 is configured to be connected to the connecting rod 488, so that it can be broken by the connecting rod 488. Compared to connecting the wire 425 to the rotating plate 485, this connection method can effectively reduce the difficulty of installing, disassembling and maintaining the wire 425, thereby saving manpower.

[0084] In addition, in a preferred embodiment, protective nets (not shown) are respectively fitted on the outer sides of the frame 10 and the movable plate 20. These protective nets allow mice or birds to enter the frame 10 and damage the conductor 425, thereby preventing damage and failure of the ventilation and explosion-proof protective window 100 of this invention.

[0085] The following is a brief description of the working process of the protective window 100 for ventilation and explosion protection according to this invention.

[0086] The protective window 100 for ventilation and explosion protection of the present invention is used to prevent impact and explosion in the event of an explosion.

[0087] When an explosion occurs, the shockwave from the explosion will push the connecting rod 488 and the rotating plate 485, causing them to move closer to the movable plate. This continues until the rotating plate 485 rotates to a position flush against the movable plate 20. At this point, the rotating plate 485 can close the second vent 25.

[0088] As the connecting rod 488 moves closer to the movable plate 20, it will quickly break the wire 425. With the wire 425 broken, the connection between the power supply and the first magnet 421 will be immediately severed, causing the first magnet 421 to lose power and become ineffective.

[0089] When the first magnet 421 is de-energized and fails, the movable plate 20 no longer has a magnetic attraction force with the first magnet 421. The movable plate 20 is only subjected to the magnetic attraction force of the second magnet 422 and the tension force of the elastic member 50. Under the combined action of the movable plate 20 and the elastic member 50, the movable plate 20 will move rapidly from the initial first position to the second position.

[0090] As the movable plate 20 moves, the distance between the movable plate 20 and the base plate 13 decreases, causing the hinge plate 32 to be squeezed. As this squeezing process continues, the first vent 15 will gradually be covered by the hinge plate 32 until the movable plate 20 reaches the second position, at which point the first vent 15 will be completely closed.

[0091] When both the first ventilation opening 15 and the second ventilation opening 25 are closed, the protective window 100 used for ventilation and explosion protection can play a role in preventing impact and explosion.

[0092] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective window (100) for ventilation and explosion protection, comprising: The frame (10) is constructed as an open box with an opening (12), and a plurality of first ventilation openings (15) are evenly provided on the bottom plate (13) of the frame. A movable plate (20) covers the opening, and a second vent (25) corresponding to the first vent is provided on the movable plate. The movable plate is configured to move from an initial first position to a second position close to the base plate under the action of an external force. The frame is further equipped with a control system (40), which is configured to fix the movable plate in a first position and, after an explosion, move the movable plate from the first position to a second position. A sealing component (30) is also connected between the movable plate and the base plate. The sealing component is configured to keep the first vent unobstructed when the movable plate is in the first position and to close the first vent when the movable plate is in the second position. The control system includes a first magnet (421) and a second magnet (422) arranged opposite to each other, capable of magnetically attracting the movable plate, and a control element (48). A first gap (424) is formed between the first magnet and the second magnet, and the movable plate can extend into the first gap so that it can be fixed at a first position under the combined action of the first magnet and the second magnet. The control element is configured to cut off the force between the first magnet and the movable plate after an explosion, causing the movable plate to move from a first position to a second position that is in close contact with the second magnet. The control element is constructed as a rotating plate (485) connected to the side of the movable plate away from the base plate. The rotating plate is hinged to the movable plate so that it can rotate towards the movable plate under the impact of an explosion. The first magnet is configured as an electromagnet connected to a power source via a wire (425), which is positioned to abut against the side of the rotating plate near the movable plate. The rotating plates are configured in multiple ways, and the arrangement of the multiple rotating plates corresponds one-to-one with the multiple second ventilation openings. The enclosed assembly is configured as a deformable element (31) connected between the movable plate and the base plate, capable of deforming under the action of the movable plate. The deformable element is constructed as a plurality of deformable hinge plates (32) connected to each other by hinges. The hinge plates are constructed as prisms and arranged in the vertical direction.

2. The protective window for ventilation and explosion resistance according to claim 1, characterized in that, The second magnet is a permanent magnet, and the control element is configured to cut off the wire after an explosion, thereby shutting down the electromagnet.

3. The protective window for ventilation and explosion resistance according to claim 1, characterized in that, The rotating plate is shaped to fit the second vent, so that the second vent can be closed after the rotating plate is rotated to a position close to the movable plate.

4. The protective window for ventilation and explosion resistance according to claim 3, characterized in that, Multiple rotating plates located on the same horizontal direction are interconnected to form a long strip, enabling the multiple rotating plates on the same horizontal direction to move synchronously. A series rod (488) arranged in the vertical direction is also connected to the rotating plate, so that multiple rotating plates located in the vertical direction can move synchronously.

5. The protective window for ventilation and explosion resistance according to any one of claims 1-4, characterized in that, An elastic element (50) is also provided between the movable plate and the frame, and the movable plate and the frame are connected by the elastic element. The first magnet is configured to have a greater adsorption force than the second magnet, so that the elastic element is in a stretched state when the movable plate is in the first position.

6. The protective window for ventilation and explosion resistance according to any one of claims 1-4, characterized in that, Protective nets are also fitted on the outside of the frame and the movable plate.

7. The protective window for ventilation and explosion resistance according to any one of claims 1-4, characterized in that, The frame, movable plate, and enclosure components are made of steel, aluminum, resin, or PLA.

8. The protective window for ventilation and explosion resistance according to any one of claims 1-4, characterized in that, Structural reinforcements are also provided on the inner walls of the frame, movable plate, and enclosed assembly.

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