Sealing cavity of high-temperature carbonization furnace

Abstract

The utility model relates to carbonization furnace equipment and discloses a high-temperature carbonization furnace sealing cavity which comprises an air sealing cavity body (1), an air sealing cavity side plate (2) is arranged on the outer side of the air sealing cavity body (1), a visual mechanism (3) is arranged on the air sealing cavity side plate (2), and the production state of fibers in a high-temperature carbonization furnace can be observed through the visual mechanism (3). According to the sealing cavity of the high-temperature carbonization furnace, the state and change of carbon fibers in the carbonization process in the high-temperature carbonization furnace can be observed in real time, and the performance and quality of products are improved.

Description

Technical Field

[0001] The utility model relates to carbonization furnace equipment, in particular to a sealed cavity of a high-temperature carbonization furnace. Background Art

[0002] Carbon fiber is an inorganic high-performance fiber with a carbon content of more than 90%, which is transformed from organic fiber through a series of heat treatments. It is a new material with excellent mechanical properties. Carbon fiber and its composite materials have the advantages of high strength, high modulus, good electrical conductivity, thermal conductivity, small thermal expansion coefficient, low density, excellent corrosion resistance and radiation resistance. They have strong advantages in fields with strict requirements on material density, stiffness, weight, fatigue properties, etc., and have been applied to cutting-edge scientific and technological fields such as rockets, aerospace and aviation, and are also widely used in sports equipment, textiles, chemical machinery and medicine.

[0003] In the production of carbon fiber, the low-temperature carbonization furnace is used for low-temperature carbonization of the fiber. The fiber is treated at a temperature of 300-1000℃ to transform the fiber structure. The product after low-temperature carbonization needs to be further carbonized at high temperature. High-temperature carbonization is the conversion of the fiber into a carbon fiber with a chaotic layer structure at a temperature of 1000-1600℃. The furnace is the main body of the high-temperature carbonization furnace. The furnace is required to withstand a long-term high temperature of 1600℃ and be airtight. No oxygen can enter the furnace under micro-pressure. After the furnace is filled with nitrogen, the oxygen content is required to be less than 5ppm. The fiber passes through different process setting temperature zones in the furnace to obtain a chaotic layer structure carbon fiber. The sealed chambers at both ends of the furnace are used to isolate the internal atmosphere from the outside world and to cool down. If it can be visualized, it is conducive to timely tracking the changes in the status of imported and exported carbon fibers. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a sealed cavity of a high-temperature carbonization furnace, which can observe the state and change of carbon fibers in the carbonization process in the high-temperature carbonization furnace in real time and improve the performance and quality of the product.

[0005] In order to solve the above technical problems, the utility model provides a sealed chamber of a high-temperature carbonization furnace, including an air-sealed chamber body, an air-sealed chamber side panel is arranged on the outside of the air-sealed chamber body, and a visualization mechanism is arranged on the air-sealed chamber side panel, and the production status of the fiber in the high-temperature carbonization furnace can be observed through the visualization mechanism.

[0006] Preferably, the visualization mechanism comprises at least one layer of light-transmitting glass and a mounting seat for fixing the light-transmitting glass on the side plate of the air-sealing cavity.

[0007] Further preferably, the mounting seat is provided with a mounting groove for fixing the light-transmitting glass, and the mounting groove is arranged corresponding to the light-transmitting glass.

[0008] More preferably, a sealing ring is provided between the light-transmitting glass and the mounting groove.

[0009] Specifically, a limiting structure is formed between the mounting seat and the sealing ring.

[0010] Optionally, the light-transmitting glass is provided as two layers, and a vacuum layer is provided between the two layers of the light-transmitting glass.

[0011] Further preferably, a layer of the light-transmitting glass close to the air-sealed cavity is a molded part made of high-temperature resistant material.

[0012] Optionally, an observation structure is further provided on the side plate of the air sealing cavity, and the observation structure includes a magnifying glass.

[0013] Further preferably, the observation structure further comprises a connecting component, one end of which is connected to the side plate of the air-sealed cavity, and the other end of which is connected to the magnifying glass, and can drive the magnifying glass to rotate.

[0014] More preferably, the connecting assembly comprises a first connecting rod and a telescopic second connecting rod, and a rotating member is provided between the first connecting rod and the second connecting rod.

[0015] Through the above technical solution, the beneficial effects of the utility model are:

[0016] The high-temperature carbonization furnace sealed chamber provided by the utility model can observe the production status of the fiber in the high-temperature carbonization furnace in real time through the visualization mechanism arranged on the air-sealed chamber, control the carbonization quality of the fiber, optimize the process parameters, and thus improve the performance and yield of the carbon fiber. Moreover, if an abnormal situation occurs in the high-temperature carbonization furnace, the operator can discover and handle it in time to avoid safety accidents.

[0017] The sealed chamber of the high-temperature carbonization furnace provided by the utility model improves the sealing performance between the visualization mechanism and the high-temperature carbonization furnace by arranging a sealing ring between the light-transmitting glass and the mounting groove; the light-transmitting glass is arranged into two layers, and the vacuum layer arranged between the two layers of light-transmitting glass can play a role of heat insulation to avoid burns to the test personnel; an observation structure including a magnifying glass connected to the side plate of the air-sealed chamber is arranged, which can observe the production status of the fiber in the high-temperature carbonization furnace in real time, further improve the clarity of the observation, and accurately grasp the production status of the fiber.

[0018] Other technical features and technical effects of the present invention will be further described in the following specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic implementation modes and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0020] Figure 1 This is a structural schematic diagram of a specific implementation of the sealed chamber of the medium- and high-temperature carbonization furnace of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a second specific implementation mode of the sealed chamber of the medium-high temperature carbonization furnace of the utility model;

[0022] Figure 3 This utility model Figure 2 A partial enlarged view of part A;

[0023] Figure 4 It is a structural schematic diagram of a third specific implementation mode of the sealed chamber of the medium-high temperature carbonization furnace of the utility model.

[0024] Description of Reference Numerals

[0025] 1 Gas sealing cavity 2 Gas sealing cavity side plate

[0026] 3 Visualization mechanism 4 Mounting seat

[0027] 5 light-transmitting glass 6 installation slot

[0028] 7 Sealing ring 8 Vacuum layer

[0029] 9 magnifying glass 10 first connecting rod

[0030] 11 second connecting rod 12 rotating member

[0031] 13 Mounting seat limit groove 14 Sealing pad protrusion DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0033] First of all, it should be noted that in the following description, some directional words involved in order to clearly illustrate the technical solution of the utility model, such as "inside", "outside", "upper", "lower", "top", "bottom", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model 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 understood as a limitation on the utility model.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connection", "installation" and "fixation" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The utility model provides a high temperature carbonization furnace sealed chamber, see Figure 1 , including an air-sealing cavity 1, an air-sealing cavity side plate 2 is arranged on the outside of the air-sealing cavity 1, a visualization mechanism 3 is arranged on the air-sealing cavity side plate 2, and the production status of the fiber in the high-temperature carbonization furnace can be observed through the visualization mechanism 3.

[0036] In the utility model, the fiber is in the furnace of the high-temperature carbonization furnace, and the carbon fiber is obtained by setting the temperature zones of the furnace in different processes. The sealed chamber of the high-temperature carbonization furnace is used outside the furnace to form a sealed environment to prevent the high-temperature gas in the furnace from leaking out of the furnace, and also to prevent the cold air outside the furnace from entering the furnace, so as to ensure that the heat and atmosphere in the furnace are effectively controlled, and improve the stability and efficiency of the carbonization process. The side plate 2 of the air-sealed chamber is made of high-temperature resistant material, and specifically can be made of high-temperature resistant materials conventionally selected in the field, such as ceramics or high-temperature alloys; the side plate 2 of the air-sealed chamber is connected to the air-sealed chamber 1, and the flow direction and speed of the gas in the air-sealed chamber 1 can be changed by adjusting the position and angle of the side plate 2 of the air-sealed chamber, so as to achieve a uniform distribution of the temperature and atmosphere in the furnace; moreover, the side plate 2 of the air-sealed chamber can play a role in supporting and protecting the air-sealed chamber 1, which helps to extend the service life of the sealed chamber of the high-temperature carbonization furnace and ensure the stability of the carbonization process. The visualization mechanism 3 can be set at any position of the air sealing chamber side plate 2. The number of visualization mechanisms 3 can be one or more, as long as the experimenter can observe the production status of the fiber in the furnace through the visualization mechanism 3. The experimenter can select and design according to actual needs.

[0037] The high-temperature carbonization furnace sealed chamber provided by the above-mentioned basic technical solution is used to put raw materials into the high-temperature carbonization furnace for the production of carbon fiber. During the production process of carbon fiber, the production status of the fiber is observed in real time by the visualization mechanism 3 arranged on the air-sealed cavity 1. If it is found that the state of the fiber is not good, the temperature, pressure and other process parameters of the high-temperature carbonization furnace can be adjusted in time to improve the carbonization quality of the fiber, thereby improving the performance and output of the carbon fiber. If an abnormal situation is found in the high-temperature carbonization furnace, the test personnel can discover and deal with it in time to avoid safety accidents.

[0038] As a preferred embodiment of the visualization mechanism 3 in the present invention, see Figure 2 The visualization mechanism 3 includes at least one layer of light-transmitting glass 5 and a mounting base 4 for fixing the light-transmitting glass 5 on the side plate 2 of the air-sealing cavity, so that the light-transmitting glass 5 is fixed on the side plate 2 of the air-sealing cavity through the mounting base 4, thereby improving the structural stability and safety of the light-transmitting glass 5.

[0039] In the present invention, the connection between the visualization mechanism 3 and the air-sealing chamber side plate 2 can be achieved by connecting the mounting seat 4 to the air-sealing chamber side plate 2 through fastening bolts. During the installation of the fastening bolts, the mounting seat 4 and the air-sealing chamber side plate 2 can be connected by fastening bolts through cold shock and cold tightening processes, thereby reducing the loosening of the fastening bolts caused by repeated cooling and reheating, thereby reducing the leakage caused by the loosening of the fastening bolts, thereby improving the stability of the fastening bolts connecting the mounting seat 4 and the air-sealing chamber side plate 2. A sealing gasket can also be provided between the fastening bolts and the mounting seat 4 to further improve the stability of the connection between the mounting seat 4 and the air-sealing chamber side plate 2.

[0040] In the present invention, the light-transmitting glass 5 can be set as one layer or multiple layers; when the light-transmitting glass 5 is set as multiple layers, the multiple layers of light-transmitting glass 5 can be of the same shape and arranged in parallel to each other to improve the heat insulation performance of the visualization mechanism 3. There is no special limitation on the shape of the light-transmitting glass 5, which can be polygonal, circular or elliptical. For example, the shape of the light-transmitting glass 5 can be circular; there is no special limitation on the shape of the mounting seat 4. The mounting seat 4 is provided with a cavity to accommodate the light-transmitting glass 5. The cross-sectional shape of the cavity of the mounting seat 4 can be polygonal, circular or elliptical. The shape of the cavity of the mounting seat 4 can be the same as that of the light-transmitting glass 5, and the area of ​​the cavity is smaller than that of the light-transmitting glass 5, so as to facilitate the fixing of the light-transmitting glass 5.

[0041] As a specific embodiment of the structure of the light-transmitting glass 5 and the mounting seat 4 in the utility model, see Figure 1 The shape of the light-transmitting glass 5 is circular, and the mounting seat 4 is a cylindrical structure with a circular cavity. The diameter of the circular cavity is DN80, which is smaller than the diameter of the light-transmitting glass 5, thereby increasing the observation range of the test personnel.

[0042] As a preferred embodiment of the mounting seat 4 in the present invention, see Figure 2 The mounting seat 4 is provided with a mounting groove 6 for fixing the light-transmitting glass 5, and the mounting groove 6 is provided corresponding to the light-transmitting glass 5. The mounting groove 6 is a groove provided on the side wall of the cavity of the mounting seat 4, and the edge of the light-transmitting glass 5 can be clamped in the mounting groove 6, further improving the stability of the light-transmitting glass 5. The mounting groove 6 is provided corresponding to the light-transmitting glass 5, which means that when the light-transmitting glass 5 is provided with multiple layers, the mounting groove 6 is also provided with multiple layers, and one mounting groove 6 can only fix one layer of light-transmitting glass 5. The specific structure of the mounting seat 4 is not limited, and illustratively, the mounting seat 4 is a flange.

[0043] In the present invention, the thickness of the light-transmitting glass 5 can be slightly smaller than the depth of the mounting groove 6, so that a gap is left when the light-transmitting glass 5 is connected to the mounting groove 6, and then the sealing material can be filled in the gap to improve the sealing between the light-transmitting glass 5 and the mounting groove 6. As a preferred embodiment of the connection between the light-transmitting glass 5 and the mounting groove 6 in the present invention, see Figure 3 A sealing ring 7 is provided between the light-transmitting glass 5 and the mounting groove 6. The sealing ring can be made of a high-temperature resistant and aging-resistant material, such as a fluororubber sealing ring, which further improves the sealing performance of the sealing cavity of the high-temperature carbonization furnace.

[0044] In the present invention, in order to further improve the stability and sealing of the light-transmitting glass 5, see Figure 3 In a preferred case, a limiting structure is formed between the mounting seat 4 and the sealing ring 7. The limiting structure includes a mounting seat limiting groove 13 provided on the mounting seat 4 and a sealing ring protrusion 14 provided on the sealing ring 7. Through the clamping of the mounting seat limiting groove 13 and the sealing ring protrusion 14, the position movement of the light-transmitting glass 5 caused by the thermal expansion and contraction of the sealing ring 7 is reduced during the operation of the high-temperature carbonization furnace and when the high-temperature carbonization furnace stops working. There is no particular limitation on the number of limiting structures, and the limiting structure can be one or more. For example, there are two limiting structures and the two limiting structures are located on opposite sides of the mounting seat limiting groove 13.

[0045] As a preferred embodiment of the light-transmitting glass 5 in the present invention, see Figure 2 and Figure 3 , the light-transmitting glass 5 is provided with two layers, and a vacuum layer 8 is provided between the two layers of light-transmitting glass 5. The vacuum layer 8 provided between the light-transmitting glass 5 can play a role of heat insulation, and prevent the test personnel from being scalded by touching the light-transmitting glass 5 during the observation process, thereby improving the safety of the high-temperature carbonization furnace and reducing energy consumption. The vacuum layer 8 can be prepared by a conventional method selected in the art, which will not be described in detail here.

[0046] As another preferred embodiment of the light-transmitting glass 5 in the utility model, a layer of light-transmitting glass 5 close to the air-sealing cavity 1 is a molded part of a high-temperature resistant material. For example, the layer of light-transmitting glass 5 close to the air-sealing cavity 1 can be made of quartz glass, borosilicate glass, etc. The layer of light-transmitting glass 5 far from the air-sealing cavity 1 can be made of glass with relatively poor high-temperature resistance to reduce the production cost of the sealed cavity of the high-temperature carbonization furnace.

[0047] As another preferred embodiment of the visualization mechanism 3 in the utility model, see Figure 1 and Figure 4 An observation structure is also provided on the side plate 2 of the air sealing chamber. The observation structure includes a magnifying glass 9. The state of the fiber in the furnace is observed in real time through the magnifying glass 9, which further improves the clarity of observation and can accurately grasp the production status of the fiber.

[0048] As a preferred embodiment of the observation structure in the utility model, see Figure 4 The observation structure also includes a connecting component, one end of which is connected to the air-sealed cavity side plate 2 and the other end is connected to the magnifying glass 9, and can drive the magnifying glass 9 to rotate, so that the position of the magnifying glass 9 can be moved through the connecting component, and the magnifying glass 9 can be used to perform magnified observation at various positions of the light-transmitting glass 5, thereby improving the practicality of the observation structure.

[0049] As a preferred embodiment of the connection assembly in the utility model, see Figure 4 The connecting assembly includes a first connecting rod 10 and a retractable second connecting rod 11, and a rotating member 12 is arranged between the first connecting rod 10 and the second connecting rod 11. The retractable second connecting rod 11 can realize the stretching and shortening of the magnifying glass 9 in the axial direction of the second connecting rod 11, and the rotating member 12 can realize the rotation of the magnifying glass 9 in all directions. When it is necessary to observe the fiber production status located at the lower part of the air-sealed cavity, the tester can manually pull the magnifying glass 9, move the magnifying glass 9 to the position closest to the fiber through the second connecting rod 11 and the rotating member 12, and observe through the magnifying glass 9 and the light-transmitting glass 5.

[0050] As a specific implementation of the rotating member 12 in the present invention, the rotating member 12 is a universal joint, which further improves the flexibility of the movement of the magnifying glass 9 and the firmness of the observation structure.

[0051] As a relatively preferred specific embodiment of the sealed chamber of the medium-high temperature carbonization furnace of the utility model, see Figures 1 to 4 , including an air-sealed cavity 1, an air-sealed cavity side plate 2 is arranged outside the air-sealed cavity 1, a visualization mechanism 3 is arranged on the air-sealed cavity side plate 2, and the production status of the fiber in the high-temperature carbonization furnace can be observed through the visualization mechanism 3, the visualization mechanism 3 includes two layers of light-transmitting glass 5, a mounting seat 4 for fixing the light-transmitting glass 5 on the air-sealed cavity side plate 2, the mounting seat 4 is provided with a mounting groove 6 for fixing the light-transmitting glass 5, the mounting groove 6 is arranged corresponding to the light-transmitting glass 5, a sealing ring 7 is arranged between the light-transmitting glass 5 and the mounting groove 6, a limiting structure is formed between the mounting seat 4 and the sealing ring 7, and the limiting structure includes a mounting seat limiting groove arranged on the mounting seat 4 13 and a sealing ring protrusion 14 arranged on the sealing ring 7, the mounting seat limit groove 13 and the sealing ring protrusion 14 are clamped, a vacuum layer 8 is arranged between the two layers of light-transmitting glass 5, a layer of light-transmitting glass 5 close to the air-sealing cavity 1 is a molded part of high-temperature resistant material, an observation structure is arranged on the air-sealing cavity side plate 2, the observation structure includes a magnifying glass 9 and a connecting component, one end of the connecting component is connected to the air-sealing cavity side plate 2, and the other end is connected to the magnifying glass 9, and can drive the magnifying glass 9 to rotate, the connecting component includes a first connecting rod 10 and a retractable second connecting rod 11, and a rotating part 12 is arranged between the first connecting rod 10 and the second connecting rod 11.

[0052] The high-temperature carbonization furnace sealed chamber provided by the above-mentioned basic technical solution is used to put raw materials into the high-temperature carbonization furnace for the production of carbon fiber. During the production process of carbon fiber, the production status of the fiber is observed in real time through the visualization mechanism 3 arranged on the air-sealed cavity 1. When it is necessary to observe the production status of the fiber located at the lower part of the high-temperature carbonization furnace, the test personnel can manually pull the magnifying glass 9, move the magnifying glass 9 to the position closest to the fiber through the second connecting rod 11 and the rotating part 12, and observe through the magnifying glass 9 and the light-transmitting glass 5. If it is found that the state of the fiber is not good, the temperature, pressure and other process parameters of the high-temperature carbonization furnace can be adjusted in time to improve the carbonization quality of the fiber, thereby improving the performance and output of the carbon fiber; if an abnormal situation is found in the high-temperature carbonization furnace, the test personnel can discover and deal with it in time to avoid safety accidents.

[0053] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any appropriate manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A sealed chamber of a high temperature carbonization furnace, characterized in that: The invention comprises an air-sealing cavity (1), an air-sealing cavity side plate (2) is arranged outside the air-sealing cavity (1), a visualization mechanism (3) is arranged on the air-sealing cavity side plate (2), and the production status of the fiber in the high-temperature carbonization furnace can be observed through the visualization mechanism (3).

2. The sealed chamber of the high temperature carbonization furnace according to claim 1, characterized in that: The visualization mechanism (3) comprises at least one layer of light-transmitting glass (5) and a mounting seat (4) for fixing the light-transmitting glass (5) on the side plate (2) of the air-sealing cavity.

3. The sealed chamber of the high temperature carbonization furnace according to claim 2, characterized in that: The mounting seat (4) is provided with a mounting groove (6) for fixing the light-transmitting glass (5), and the mounting groove (6) is arranged corresponding to the light-transmitting glass (5).

4. The sealed chamber of the high temperature carbonization furnace according to claim 3, characterized in that: A sealing ring (7) is provided between the light-transmitting glass (5) and the mounting groove (6).

5. The sealed chamber of the high temperature carbonization furnace according to claim 4, characterized in that: A limiting structure is formed between the mounting seat (4) and the sealing ring (7).

6. The sealed chamber of a high temperature carbonization furnace according to any one of claims 2 to 5, characterized in that: The light-transmitting glass (5) is provided in two layers, and a vacuum layer (8) is provided between the two layers of light-transmitting glass (5).

7. The sealed chamber of the high temperature carbonization furnace according to claim 6, characterized in that: The layer of light-transmitting glass (5) close to the air-sealed cavity (1) is a molded part made of high-temperature resistant material.

8. The sealed chamber of a high temperature carbonization furnace according to any one of claims 1 to 5, characterized in that: An observation structure is also provided on the air sealing cavity side plate (2), and the observation structure comprises a magnifying glass (9).

9. The sealed chamber of the high temperature carbonization furnace according to claim 8, characterized in that: The observation structure further comprises a connecting component, one end of which is connected to the air-sealing chamber side plate (2) and the other end of which is connected to the magnifying glass (9), and which is capable of driving the magnifying glass (9) to rotate.

10. The sealed chamber of a high temperature carbonization furnace according to claim 9, characterized in that: The connection assembly comprises a first connection rod (10) and a telescopic second connection rod (11), and a rotating member (12) is arranged between the first connection rod (10) and the second connection rod (11).

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