A fire curtain door sealing device and its application method in an atmosphere box device

Abstract

The present invention relates to the technical field of firing kiln equipment, and specifically to a fire curtain door sealing device and its application method in an atmosphere box device, including a hydrogen pipeline, a drainage chamber, and an ignition chamber; a plurality of hydrogen injection ports are arranged on the hydrogen pipeline; the drainage chamber is arranged on the hydrogen pipeline, and the length direction of the drainage chamber is parallel to the axial direction of the hydrogen pipeline; the drainage chamber is connected to the hydrogen pipeline through the hydrogen injection port; the ignition chamber is arranged at the upper end of the drainage chamber and is arranged along the length direction of the drainage chamber; the ignition chamber is connected to the drainage chamber. The fire curtain door sealing device has a simple structure, and the manufacturing and use costs are very low; when the fire curtain door sealing device is applied to the atmosphere box device, the fire curtain formed in the ignition chamber can burn the waste gas, hydrogen, etc. flowing out after the maintenance door is opened, so as to avoid the waste gas, hydrogen, etc. flowing into the factory and causing hidden dangers, and at the same time avoid the waste gas from causing damage to the maintenance personnel; the problems existing in the prior art are solved.

Description

Technical Field

[0001] The invention relates to the technical field of firing kiln equipment, and in particular to a fire curtain door sealing device and an application method thereof in an atmosphere box device. Background Art

[0002] Kilns are made of refractory materials and are used to fire ceramic objects and sculptures or to fuse enamel to the surface of metal objects. They are the core equipment in the production process. At the same time, with the rapid development of modern industry, kiln technology is also continuously improving and developing. The heat treatment function and temperature control of kilns have been significantly improved. Modern new kilns not only have higher thermal efficiency and lower energy consumption, but also can achieve flexible and precise control of the temperature in the furnace and regulation of the atmosphere in the furnace. Therefore, kilns are still widely used in many production industries such as metallurgy, chemical industry, building materials, glass, and electronics.

[0003] At present, electronic ceramics, power materials and other materials usually complete the sintering process in a continuous heat treatment atmosphere kiln, and in the kiln sintering process, the sealing of the kiln is very important and can directly affect the quality of the product. However, with the rapid development of the electronics industry, the requirements for the performance of electronic ceramics, power materials and other materials are getting higher and higher, and then the requirements for their preparation process are becoming more and more stringent, especially the ratio of raw materials and the atmosphere composition, atmosphere concentration and temperature inside the kiln during the sintering process. Therefore, in order to better control the atmosphere inside the furnace of the kiln, to avoid part of the air entering the furnace when conveying and outputting materials into the furnace, which will change the atmosphere composition and gas concentration inside the furnace, or cause the temperature near the inlet and outlet of the furnace to fluctuate, a kiln replacement chamber is usually set at both ends of the kiln to replace the gas of the materials entering and leaving the furnace, so as to ensure that the gas concentration inside the furnace will not change, so that the furnace has a sufficient and stable process atmosphere.

[0004] The process atmosphere inside the furnace usually includes not only nitrogen, hydrogen, nitrogen-hydrogen mixture and other gases, but also organic colloids and even toxic gases volatilized during product sintering; in the process of using the replacement chamber to replace the gas of the materials entering and leaving the furnace, a small part of the atmosphere inside the furnace will enter the kiln replacement chamber; and after the gas replacement, some of the above atmosphere may remain in the replacement chamber; when the kiln or replacement chamber is repaired, it is necessary to open the maintenance door of the kiln replacement chamber and other boxes so that maintenance personnel can enter and repair them; these residual atmospheres will be discharged at the moment the maintenance door of the replacement chamber is opened; the waste gas, hydrogen and nitrogen-hydrogen mixture in these residual atmospheres are very dangerous, not only polluting the environment, but also being inhaled into the body by the maintenance personnel, causing damage to the body. Therefore, it is urgent to develop a device for treating the waste gas, hydrogen and nitrogen-hydrogen mixture discharged at the moment the maintenance door is opened.

[0005] The present invention provides a fire curtain door sealing device and an application method thereof in an atmosphere box device, so as to solve the problems existing in the prior art that when the maintenance door is opened, waste gas, hydrogen, nitrogen-hydrogen mixed gas, etc. are discharged into the factory building, causing safety hazards and causing physical injuries to maintenance personnel. Summary of the invention

[0006] The purpose of the present invention is to provide a fire curtain door sealing device and its application method in an atmosphere box device, so as to solve the problems existing in the prior art that when the maintenance door is opened, waste gas, hydrogen, nitrogen-hydrogen mixed gas, etc. are discharged into the factory building, causing safety hazards and causing physical injuries to maintenance personnel.

[0007] The technical solution of the present invention is: a fire curtain door sealing device, comprising: a hydrogen pipeline, a drainage chamber, and a ignition chamber;

[0008] Among them, a plurality of hydrogen injection ports are arranged on the hydrogen pipeline; the plurality of hydrogen injection ports are arranged in a row and are arranged parallel to the axis of the hydrogen pipeline;

[0009] The drainage cavity is arranged on the hydrogen pipeline, and the length direction of the drainage cavity is parallel to the axial direction of the hydrogen pipeline; the drainage cavity is connected to the hydrogen pipeline through the hydrogen injection port, and is used to inject the hydrogen in the hydrogen pipeline into the drainage cavity;

[0010] The ignition chamber is arranged at the upper end of the drainage chamber and along the length direction of the drainage chamber; the ignition chamber is connected with the drainage chamber and is used to guide the gas into the ignition chamber and burn in the ignition chamber to form a fire curtain.

[0011] Preferably, a plurality of induced air inlets are provided on one end of the drainage cavity connected to the hydrogen pipeline;

[0012] A plurality of induced air inlets and hydrogen injection ports are arranged at intervals and at least in one row.

[0013] Preferably, the drainage chamber includes two drainage plates arranged in a direction parallel to the axis of the hydrogen pipeline and two side plates arranged perpendicular to the axis of the hydrogen pipeline, and the two drainage plates are symmetrically arranged on both sides of the hydrogen injection port; a plurality of induced air inlets are arranged on one end of the two drainage plates connected to the hydrogen pipeline, and the plurality of induced air inlets are arranged in a row.

[0014] Preferably, a plurality of supplementary air inlets are provided on the bottom surface of the ignition cavity for supplementing air into the ignition cavity.

[0015] Preferably, the cross section of the ignition cavity along the width direction is U-shaped;

[0016] A vent hole is provided on the bottom surface of the ignition cavity and along the length direction of the ignition cavity, and the shape and size of the vent hole match the shape and size of the cavity body of the drainage cavity; the ignition cavity is provided at the upper end of the drainage cavity, and the vent hole corresponds to the cavity body of the drainage cavity, so that the ignition cavity is connected with the drainage cavity through the vent hole;

[0017] A plurality of supplementary air inlets are arranged along the length direction of the fire cavity and are distributed on the same side of the vent hole or on both sides of the vent hole.

[0018] The present invention also provides an application method of the fire curtain door sealing device in an atmosphere box device, wherein the atmosphere box device includes an atmosphere box body, a hydrogen gas source for conveying hydrogen into the atmosphere box body, and a fire curtain door sealing device;

[0019] The atmosphere box includes a furnace body, a displacement chamber arranged at the head and / or tail of the furnace body, and a conveying line of a furnace outer push plate; a maintenance door is arranged on one side of the displacement chamber; a fire curtain door sealing device is arranged below the maintenance door; the fire curtain door sealing device is connected to a hydrogen gas source through a gas delivery pipeline, and a pressure reducing valve is arranged on the gas delivery pipeline;

[0020] The application method specifically comprises the following steps:

[0021] a. When the atmosphere box needs to be repaired, first stop the process inside the atmosphere box and slowly adjust the temperature inside the atmosphere box to room temperature;

[0022] b. Open the pressure reducing valve to transport hydrogen to the hydrogen pipeline through the gas delivery pipeline, and control the hydrogen pressure in the hydrogen pipeline within the range of 0.8-1.5 kPa. The hydrogen in the hydrogen pipeline is sprayed into the drainage chamber through the hydrogen injection port, mixed with the air entering the drainage chamber through the injection air inlet, and then flows into the ignition chamber;

[0023] c. Manually ignite the hydrogen in the ignition chamber to form a hydrogen combustion flame curtain, then slowly open the maintenance door to allow the hydrogen combustion flame curtain to burn the exhaust gas and hydrogen flowing out of the maintenance door;

[0024] d. During incineration, air is automatically added into the ignition chamber through the supplementary air inlet to ensure full combustion of hydrogen. At the same time, the size of the hydrogen combustion flame curtain in the ignition chamber is adjusted by adjusting the opening and closing degree of the pressure reducing valve;

[0025] e. After burning for 3-10 minutes, close the pressure reducing valve, stop burning, and wait until the temperature near the maintenance door returns to room temperature before repairing the inside of the atmosphere box.

[0026] Preferably, the input end of the hydrogen pipeline is connected to the hydrogen gas source through a gas delivery pipeline, and a pressure reducing valve is arranged on the gas delivery pipeline between the input end of the hydrogen pipeline and the hydrogen gas source to adjust the hydrogen pressure in the hydrogen pipeline; the output end of the hydrogen pipeline is sealed or connected to the hydrogen gas source through a gas delivery pipeline.

[0027] Compared with the prior art, the advantages of the present invention are:

[0028] (1) The present invention provides a fire curtain door sealing device and an application method thereof in an atmosphere box device. The fire curtain door sealing device has a simple structure, is easy to install, has very low manufacturing and use costs, and has a wide range of applications. When the fire curtain door sealing device is applied to the atmosphere box device, during the process of opening the maintenance door and after it is fully opened, the fire curtain formed in the ignition chamber can burn the exhaust gas, hydrogen and other gases flowing out of the maintenance door, causing the organic and inorganic substances in the exhaust gas to undergo chemical reactions such as oxidation and pyrolysis to generate harmless substances such as carbon dioxide and water vapor. This can not only effectively prevent the exhaust gas from being inhaled into the body of maintenance personnel and causing physical damage to the maintenance personnel, but also prevent the hydrogen or other flammable gases in the exhaust gas flowing out of the maintenance door from directly flowing into the factory building and causing safety hazards. This solves the problem of the exhaust gas, nitrogen-hydrogen mixed gas, etc. discharged at the moment the maintenance door is opened flowing into the factory building and causing safety hazards and physical damage to maintenance personnel in the prior art.

[0029] (2) The present invention provides a fire curtain door sealing device and an application method thereof in an atmosphere box device. The fire curtain door sealing device is provided with an induced air inlet on the guide plate. When hydrogen is sprayed from the hydrogen pipeline into the guide chamber, the hydrogen gas flow can drive external air from the induced air inlet into the interior of the guide chamber and mix with the hydrogen in the guide chamber to provide sufficient combustion-supporting gas for hydrogen combustion.

[0030] (3) The present invention provides a fire curtain door sealing device and an application method thereof in an atmosphere box device, wherein a supplementary air inlet is provided at the bottom of the ignition chamber of the fire curtain door sealing device; during the incineration process, a negative pressure is formed at the bottom of the ignition chamber, and external air can be introduced into the ignition chamber through the supplementary air inlet to provide or supplement combustion-supporting gas for hydrogen combustion, thereby achieving a combustion-supporting effect, and at the same time achieving a flame cooling effect.

[0031] (4) The present invention provides a fire curtain door sealing device and an application method thereof in an atmosphere box device. When the fire curtain door sealing device is applied to the atmosphere box device, a hydrogen pipeline can be directly led out from the hydrogen gas source in the atmosphere box device for use by the fire curtain door sealing device, which helps to save investment and construction costs and use costs; in addition, when the fire curtain door sealing device is applied to the atmosphere box device, it is only necessary to manually ignite the hydrogen in the ignition chamber before opening the maintenance door to form a stable fire curtain to burn the waste gas and hydrogen, and the operation is very simple; and the size of the hydrogen combustion flame can be adjusted by adjusting the opening and closing degree of the pressure reducing valve, thereby adjusting the height and stability of the fire curtain, thereby improving the effect of the fire curtain burning the waste gas and hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0033] Figure 1 A schematic diagram of the structure of the fire curtain door sealing device provided by the present invention;

[0034] Figure 2 A top view of the fire curtain door sealing device provided by the present invention;

[0035] Figure 3 A schematic cross-sectional view of the fire curtain door sealing device provided by the present invention along the width direction;

[0036] Figure 4 A schematic diagram of the structure of the atmosphere box device provided by the present invention;

[0037] Figure 5 An enlarged view of the P zone in the structural schematic diagram of the atmosphere box device provided by the present invention;

[0038] Among them: 1. Fire curtain door sealing device; 2. Hydrogen pipeline; 3. Hydrogen injection port; 4. Drainage chamber; 41. Drainage plate; 42. Side plate; 5. Drainage air inlet; 6. Ignition chamber; 61. Vent hole; 7. Supplementary air inlet; 8. Pressure reducing valve; 11. Furnace outer push plate conveyor line; 12. Replacement chamber; 13. Furnace body; 14. Maintenance door; 15. Hydrogen gas source. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with specific embodiments:

[0040] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "inside", "outside", "side", "bottom", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred to components must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] A fire curtain door sealing device, such as Figure 1 As shown, it includes a hydrogen pipeline 2, a drainage chamber 4, and an ignition chamber 6. Figure 2 As shown, the hydrogen pipeline 2 is arranged on the base, and a plurality of hydrogen injection ports 3 are also arranged on the hydrogen pipeline 2; the plurality of hydrogen injection ports 3 are arranged in a row at equal intervals and are arranged parallel to the axis of the hydrogen pipeline 2. In other embodiments, the plurality of hydrogen injection ports 3 may also be arranged at non-equidistant intervals.

[0042] The drainage chamber 4 is arranged on the hydrogen pipeline 2, and the length direction of the drainage chamber 4 is parallel to the axial direction of the hydrogen pipeline 2; the drainage chamber 4 is connected to the hydrogen pipeline 2 through the hydrogen injection port 3, and is used to inject the hydrogen in the hydrogen pipeline 2 into the drainage chamber 4. The drainage chamber 4 includes two drainage plates 41 arranged in parallel to the axial direction of the hydrogen pipeline 2 and two side plates 42 arranged perpendicular to the axial direction of the hydrogen pipeline 2, and the two drainage plates 41 are symmetrically arranged on both sides of the hydrogen injection port 3; the ends of the two drainage plates 41 connected to the hydrogen pipeline 2 are provided with a plurality of induced air inlets 5; the plurality of induced air inlets 5 are arranged at intervals with the hydrogen injection port 3 on the hydrogen pipeline 2, and the plurality of induced air inlets 5 on the two drainage plates 41 are arranged in a row respectively. In the process of hydrogen being injected from the hydrogen pipeline 2 into the drainage chamber 4, the hydrogen gas flow will drive the external air from the induced air inlet 5 into the interior of the drainage chamber 4 to mix with the hydrogen, and provide combustion-supporting gas for hydrogen combustion. In other embodiments, at least one guide plate 41 arranged in parallel to the axial direction of the hydrogen pipeline 2 is provided on the guide cavity 4 with a plurality of induced air inlets 5, and the induced air inlets 5 are arranged at a position close to the hydrogen pipeline 2; the plurality of induced air inlets 5 can also be arranged in two rows.

[0043] The ignition chamber 6 is arranged at the upper end of the drainage chamber 4 and is arranged along the length direction of the drainage chamber 4; the ignition chamber 6 is connected to the drainage chamber 4 and is used to guide the gas into the ignition chamber 6 and burn in the ignition chamber 6. Figure 3As shown, the cross section of the ignition cavity 6 along the width direction is U-shaped; a vent hole 61 is provided on the bottom surface of the ignition cavity 6 and along the length direction of the ignition cavity 6; and the shape and size of the vent hole 61 match the shape and size of the cavity of the drainage cavity 4; the ignition cavity 6 is provided at the upper end of the drainage cavity 4, and the vent hole 61 corresponds to the cavity of the drainage cavity 4, so that the ignition cavity 6 is connected to the drainage cavity 4 through the vent hole 61, so that the mixed gas of hydrogen and air in the drainage cavity 4 enters the ignition cavity 6. In addition, a plurality of supplementary air inlets 7 are provided at the bottom of the ignition cavity 6 for automatically replenishing air into the ignition cavity 6. The plurality of supplementary air inlets 7 are distributed on both sides of the vent hole 61 and along the length direction of the ignition cavity 6. In other embodiments, a plurality of supplementary air inlets 7 may be arranged along the length direction of the fire cavity 6 and are all distributed on the same side of the vent hole 61; or a plurality of supplementary air inlets 7 may be arranged on the bottom surface of the fire cavity 6 and are distributed around the vent hole 61. After the hydrogen is manually ignited, a row of hydrogen combustion flames, i.e., a stable flame curtain, will be formed in the fire cavity 6. After the flame curtain is formed, a negative pressure will be formed at the bottom of the fire cavity 6. External air can be introduced into the fire cavity 6 through the supplementary air inlet 7, which can play a combustion-supporting effect and achieve a flame cooling effect.

[0044] The present invention also provides an application method of the above-mentioned fire curtain door sealing device in an atmosphere box device, wherein the atmosphere box device includes an atmosphere box body, a hydrogen gas source 15 for conveying hydrogen into the atmosphere box body, and a fire curtain door sealing device 1; a maintenance door 14 is provided on the atmosphere box body; the fire curtain door sealing device 1 is arranged below the maintenance door 14; and the length direction of the fire curtain door sealing device 1 is parallel to the length direction of the maintenance door 14; the fire curtain door sealing device 1 is connected to the hydrogen gas source 15 through a gas transmission pipeline. In this embodiment, the hydrogen required by the fire curtain door sealing device 1 directly quotes the hydrogen used by the furnace body 13, which can effectively save investment and construction costs and use costs. In other embodiments, the atmosphere box device may not include the hydrogen gas source 15. In this case, the fire curtain door sealing device 1 can obtain the hydrogen required for combustion by connecting the gas transmission pipeline to an external hydrogen storage pipe.

[0045] In this embodiment, if Figure 4As shown, the atmosphere box includes a furnace body 13, a displacement chamber 12 arranged at the head and tail of the furnace body 13, and a furnace outer push plate conveyor line 11; a maintenance door 14 is arranged on one of the sides of the displacement chamber 12; during the operation of the atmosphere box device, the material to be transported to the furnace body 13 is first placed on the furnace outer push plate conveyor line 11, and the material is transported to the displacement chamber 12 at the furnace head through the furnace outer push plate conveyor line 11 for gas displacement; after the displacement is completed, it is transported to the furnace body 13 for heating and sintering, and during the sintering process, the material is transported from the furnace head to the furnace tail through the furnace inner push plate conveyor line; after the sintering process is completed, the material is transported to the displacement chamber 12 at the furnace tail for displacement, and then transported to the loading and unloading point by the furnace outer push plate conveyor line 11 for loading and unloading. Figure 5The fire curtain door sealing device 1 is arranged below the maintenance door 14 on the replacement chamber 12; one end of the hydrogen pipeline 2 is used as the input end and is connected to the hydrogen gas source 15 through the gas delivery pipeline, and a pressure reducing valve 8 is arranged on the gas delivery pipeline section to adjust the hydrogen pressure in the hydrogen pipeline 2; the other end of the hydrogen pipeline 2 is used as the output end and is set to a sealed state. By adjusting the pressure reducing valve 8, the injection speed of the hydrogen in the hydrogen pipeline 2 when it is injected into the drainage cavity 4 can be adjusted. In other embodiments, one end of the hydrogen pipeline 2 can be connected to the pipeline for transporting hydrogen into the atmosphere box through a gas delivery pipeline; or both ends of the hydrogen pipeline 2 can be connected to the hydrogen source 15 through gas delivery pipelines, so that part of the hydrogen in the hydrogen source 15 flows into the hydrogen pipeline 2 from one end of the hydrogen pipeline 2, and part of the hydrogen flowing into the hydrogen pipeline 2 is sprayed into the drainage cavity 4 through the hydrogen injection port 3, and part of it flows back to the inside of the hydrogen source 15 from the other end of the hydrogen pipeline 2, so as to ensure that the gas pressure inside the hydrogen pipeline 2 is in a relatively stable state. In this embodiment, the gas pressure in the hydrogen source 15 is about 50kPa, which is relatively high; if such a high pressure is used for hydrogen injection, the flame will be very unstable during the injection and burning process, and it is easy to have the phenomenon of flame separation and flameout; therefore, the pressure reducing valve 8 is used to reduce the hydrogen pressure in the hydrogen pipeline 2 to about 1kPa. The present invention also provides an application method of the above-mentioned fire curtain door sealing device in the above-mentioned atmosphere box device, which specifically includes the following steps: first, when the atmosphere box needs to be repaired, it is necessary to stop the ongoing process in the atmosphere box first, and slowly adjust the temperature inside the atmosphere box to room temperature; when the temperature inside the atmosphere box recovers to room temperature, open the pressure reducing valve 8 to allow hydrogen to be transported to the hydrogen pipeline 2 through the gas delivery pipeline, and control the hydrogen pressure in the hydrogen pipeline 2 within the range of 0.8-1.5 kPa; at this time, the hydrogen in the hydrogen pipeline 2 will be sprayed into the drainage chamber 4 through the hydrogen injection port 3, and under the influence of the force of the hydrogen gas flow, the air outside the drainage chamber 4 will enter the drainage chamber 4 through the injection air inlet 5, and after mixing with the hydrogen inside the drainage chamber 4, it will flow into the ignition chamber 6; then, Manually ignite the hydrogen in the ignition chamber 6 to form a row of hydrogen combustion flames, i.e., a fire curtain, and then slowly open the maintenance door 14 to allow the hydrogen combustion fire curtain to burn the exhaust gas and hydrogen flowing out through the maintenance door 14; secondly, during the incineration process, air is automatically replenished into the ignition chamber 6 through the supplementary air inlet 7 to allow the hydrogen and some combustible gases in the exhaust gas to be fully burned. At the same time, the size of the hydrogen combustion flame in the ignition chamber 6 is adjusted by adjusting the opening and closing degree of the pressure reducing valve 8, thereby adjusting the height of the fire curtain; the stability of the fire curtain can also be adjusted by adjusting the opening and closing degree of the pressure reducing valve 8; finally, after 3-10 minutes of incineration, close the pressure reducing valve 8, stop incineration, and wait for the temperature near the maintenance door 14 to return to room temperature before entering the atmosphere box to perform maintenance on the interior of the atmosphere box.

[0046] In this embodiment, a hydrogen pipeline 2 with a diameter of 15A is selected, and the hydrogen pressure in the hydrogen pipeline 2 is reduced to about 1kPa by adjusting the pressure reducing valve 8. At this time, the injection speed of the hydrogen in the hydrogen pipeline 2 when it is ejected from the hydrogen injection port 3 is about 150m / s; after the hydrogen in the ignition chamber 6 is manually ignited, a hydrogen combustion fire curtain with a certain height will be formed in the ignition chamber; this fire curtain is like a curtain used to seal the maintenance door 14, so it is called a fire curtain sealing door. In this embodiment and other embodiments, the hydrogen pressure in the hydrogen pipeline 2 can be adjusted to adjust the injection speed of the hydrogen, so as to adjust the height of the fire curtain. In order to ensure that the fire curtain sealing door device 1 can fully burn the exhaust gas and hydrogen flowing out through the maintenance door 14 to achieve a better treatment effect, the width of the fire curtain formed by the hydrogen combustion should be within the range of 450-550mm, and the height of the fire curtain should be no less than 250mm.

[0047] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A fire curtain door sealing device, characterized in that: include: Hydrogen pipeline (2), drainage chamber (4), ignition chamber (6); The hydrogen pipeline (2) is provided with a plurality of hydrogen injection ports (3); the plurality of hydrogen injection ports (3) are arranged in a row and are arranged parallel to the axis of the hydrogen pipeline (2); The drainage chamber (4) is arranged on the hydrogen pipeline (2), and the length direction of the drainage chamber (4) is parallel to the axial direction of the hydrogen pipeline (2); the drainage chamber (4) is connected to the hydrogen pipeline (2) through the hydrogen injection port (3) and is used to inject the hydrogen in the hydrogen pipeline (2) into the drainage chamber (4); The ignition chamber (6) is arranged at the upper end of the drainage chamber (4) and is arranged along the length direction of the drainage chamber (4); the ignition chamber (6) is connected to the drainage chamber (4) and is used to guide the gas into the ignition chamber (6) and burn in the ignition chamber (6) to form a fire curtain; A plurality of induced air inlets (5) are provided on one end of the drainage chamber (4) connected to the hydrogen pipeline (2); A plurality of the induced air inlets (5) are arranged at intervals from the hydrogen injection ports (3) and are arranged in at least one row; A plurality of supplementary air inlets (7) are provided on the bottom surface of the ignition cavity (6) for supplying air into the ignition cavity (6).

2. A fire curtain door sealing device according to claim 1, characterized in that: The drainage chamber (4) comprises two drainage plates (41) arranged in a direction parallel to the axis of the hydrogen pipeline (2) and two side plates (42) arranged perpendicular to the axis of the hydrogen pipeline (2), and the two drainage plates (41) are symmetrically arranged on both sides of the hydrogen injection port (3); a plurality of drainage air inlets (5) are arranged at one end of the two drainage plates (41) connected to the hydrogen pipeline (2), and the plurality of drainage air inlets (5) are arranged in a row.

3. The fire curtain door sealing device according to claim 1, characterized in that: The cross section of the ignition chamber (6) along the width direction is U-shaped; A vent hole (61) is provided on the bottom surface of the ignition cavity (6) and along the length direction of the ignition cavity (6), and the shape and size of the vent hole (61) match the shape and size of the cavity body of the drainage cavity (4); the ignition cavity (6) is provided at the upper end of the drainage cavity (4), and the vent hole (61) corresponds to the cavity body of the drainage cavity (4), so that the ignition cavity (6) is connected to the drainage cavity (4) through the vent hole (61); A plurality of the supplementary air inlets (7) are arranged along the length direction of the ignition cavity (6) and are distributed on the same side of the vent hole (61) or on both sides of the vent hole (61).

4. The method for applying the fire curtain door sealing device according to any one of claims 1 to 3 in an atmosphere box device, characterized in that: The atmosphere box device comprises an atmosphere box body, a hydrogen gas source (15) for conveying hydrogen into the atmosphere box body, and a fire curtain door sealing device (1); the atmosphere box body comprises a furnace body (13), a displacement chamber (12) arranged at the head and / or tail of the furnace body (13), and a furnace body push plate conveying line (11); a maintenance door (14) is arranged on one side of the displacement chamber (12); the fire curtain door sealing device (1) is arranged below the maintenance door (14); the fire curtain door sealing device (1) is connected to the hydrogen gas source (15) through a gas conveying pipeline, and a pressure reducing valve (8) is arranged on the gas conveying pipeline; The application method includes the following steps: a. When the atmosphere box needs to be repaired, first stop the process inside the atmosphere box and slowly adjust the temperature inside the atmosphere box to room temperature; b. Opening the pressure reducing valve (8) to allow hydrogen to be transported to the hydrogen pipeline (2) through the gas transport pipeline, and controlling the hydrogen pressure in the hydrogen pipeline (2) within the range of 0.8-1.5 kPa. The hydrogen in the hydrogen pipeline (2) is sprayed into the drainage chamber (4) through the hydrogen spray port (3), mixed with the air that enters the drainage chamber (4) through the spray air inlet (5), and then flows into the ignition chamber (6); c. manually igniting the hydrogen in the ignition chamber (6) to form a hydrogen combustion flame curtain, and then slowly opening the maintenance door (14) to allow the hydrogen combustion flame curtain to burn the exhaust gas and hydrogen flowing out of the maintenance door (14); d. During combustion, air is automatically added into the combustion chamber (6) through the supplementary air inlet (7) to ensure that the gas is fully burned. At the same time, the size and stability of the hydrogen combustion flame curtain in the combustion chamber (6) are adjusted by adjusting the opening and closing degree of the pressure reducing valve (8); e. After burning for 3-10 minutes, close the pressure reducing valve (8) to stop burning. After the temperature near the maintenance door (14) returns to room temperature, repair the inside of the atmosphere box.

5. The method for applying the fire curtain door sealing device in an atmosphere box device according to claim 4 is characterized in that: The input end of the hydrogen pipeline (2) is connected to the hydrogen source (15) via a gas delivery pipeline, and the pressure reducing valve (8) is arranged on the gas delivery pipeline between the input end of the hydrogen pipeline (2) and the hydrogen source (15) to adjust the hydrogen pressure in the hydrogen pipeline (2); the output end of the hydrogen pipeline (2) is sealed or connected to the hydrogen source (15) via a gas delivery pipeline.

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