Sealing strip, sealing cover and reaction furnace

Abstract

The utility model discloses a sealing strip, a sealing cover and a reaction furnace. The sealing strip comprises a core rod and a winding rope. The winding rope is wound on the peripheral surface of the core rod and is a carbon fiber rope. The carbon fiber rope is wound on the periphery of the core rod, the surface of the carbon fiber rope is not prone to breakage compared with aluminum silicate fibers in the high-temperature environment, the service life of the sealing strip is longer, and the sealing strip is installed in the cover plate so that the sealing cover can achieve longer service life at the high temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, in particular to a sealing strip, a sealing cover and a reaction furnace. Background Art

[0002] Sealing in high-temperature environments has always been a difficult problem to solve. In the prior art, aluminum silicate fiber is often used as the material for sealing strips. However, in high-temperature environments, sealing strips made of aluminum silicate fiber are prone to breakage near the outer surface of the high-temperature reaction chamber, and have a short service life. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a sealing strip, wherein a carbon fiber rope is wrapped around the periphery of a core rod, and the surface of the carbon fiber rope is not easy to break in a high temperature environment, which can effectively increase the service life.

[0004] The utility model also provides a sealing cover with the sealing strip and a reaction furnace with the sealing cover.

[0005] The sealing strip according to the first embodiment of the utility model comprises a core rod and a winding rope. The winding rope is wound around the outer peripheral surface of the core rod, and the winding rope is a carbon fiber rope.

[0006] The sealing strip according to the embodiment of the first aspect of the utility model has at least the following beneficial effects: the periphery of the core rod is wrapped with carbon fiber rope, and the surface of the carbon fiber rope is less likely to break than aluminum silicate fiber in a high temperature environment, so that the service life of the sealing strip is longer.

[0007] According to some embodiments of the present invention, the material of the core rod is carbon. Carbon has good hardness, is not easy to deform, and can maintain stable chemical and physical properties even at high temperatures.

[0008] According to some embodiments of the present invention, the cross section of the core rod is in the shape of a rounded rectangle. Compared with a circle, a rectangle is easier to process and can have a larger sealing area, effectively improving the sealing effect.

[0009] According to some embodiments of the utility model, the cross section of the core rod includes a middle section and two edge sections, the middle section is rectangular, the edge sections are semicircular, and the straight sides of the edge sections coincide with the wide sides of the rectangle. Such a design can also have a larger sealing area, and the semicircular shape of the edge sections can also reduce the friction of the edges of the core rod on the carbon fiber rope when the carbon fiber rope is wound, thereby increasing the service life, and can also reduce the friction between the edges of the core rod and other equipment when the sealing strip is installed on other equipment.

[0010] The sealing cover according to the second embodiment of the utility model comprises a plurality of sealing strips of the utility model embodiment and a cover plate. The cover plate comprises an inner surface, the inner surface comprises a sealing area and a peripheral area, the peripheral area is arranged at the periphery of the sealing area, and a plurality of sealing strips are installed on the inner surface and isolate the sealing area from the peripheral area.

[0011] The sealing cover according to the embodiment of the second aspect of the utility model has at least the following beneficial effects: the outer periphery of the sealing strip core rod of the embodiment of the utility model is wrapped with carbon fiber rope, and the surface of the carbon fiber rope is less likely to break than the aluminum silicate fiber in a high temperature environment, so that the service life of the sealing strip is longer, and the sealing strip is installed in the cover plate so that the sealing cover can achieve a longer service life even at high temperatures.

[0012] According to some embodiments of the utility model, four grooves are provided on the inner surface, two grooves are spaced apart along the first direction, and the other two grooves are spaced apart along the second direction, and any two of the first direction, the second direction and the normal direction of the inner surface are perpendicular to each other. Four sealing strips are provided, and the four sealing strips are respectively embedded in the four grooves, and the sealing area is rectangular. Providing a rectangular sealing area on the inner surface can make the sealing strip cover the surrounding of the sealing area well, and the rectangular sealing area is more convenient to process. At the same time, under the premise of the sealing area of ​​the same area, it has a smaller perimeter than a parallelogram, which reduces the processing cost and the length of the sealing ring and improves the sealing performance.

[0013] According to some embodiments of the utility model, the cross section of the groove is a rectangle, and one long side of the rectangle is parallel to the inner surface. The long side is parallel to the inner surface so that the longer side of the sealing strip can be used as the sealing surface after being placed in the groove, and has a larger sealing area. Since the short side does not participate in the sealing, but only acts as abutment against the sealing strip when the sealing strip is placed in the groove, making it short can reduce the groove volume, reduce the size of the sealing strip, and reduce the manufacturing cost.

[0014] According to some embodiments of the utility model, the width of the groove gradually increases from the inner surface to the inside of the sealing cover, so that after the sealing strip is inserted into the groove, the carbon fiber ropes on the outer periphery of the sealing strip can be used to support the inner surface of the groove by using the resilience of the carbon fiber ropes to prevent the sealing strip from falling off.

[0015] The reactor according to the third aspect of the present invention comprises a sealing cover and a reaction chamber. The reaction chamber is provided with an opening, the sealing cover is arranged at the opening, and the sealing strip abuts against the outer surface of the reaction chamber to close the opening.

[0016] The reactor according to the embodiment of the third aspect of the utility model has at least the following beneficial effects: the sealing cover of the embodiment of the utility model has the characteristic of better service life, so that the reactor using the sealing cover can effectively seal the reaction chamber for a longer time in a high temperature environment.

[0017] According to some embodiments of the present invention, the reactor further comprises a pressing assembly, the pressing assembly abutting against a side surface of the sealing cover facing away from the opening, and the pressing assembly is used to apply pressure directed toward the opening to the sealing cover. The pressing assembly can make the inner surface of the sealing cover fit the opening more closely, thereby improving the fit of the sealing strip and improving the sealing performance.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 It is a schematic structural diagram of the sealing strip in the embodiment of the first aspect of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a sealing cover in an embodiment of the second aspect of the utility model;

[0022] Figure 3 for Figure 2 A magnified view of area B in FIG.

[0023] Figure 4 It is a structural schematic diagram of a sealing cover equipped with a sealing strip in an embodiment of the utility model;

[0024] Figure 5 It is a cross-sectional view of the reactor in the embodiment of the third aspect of the utility model.

[0025] Figure numerals: sealing strip 100, core rod 101, carbon fiber rope 102, edge section 103, middle section 104, sealing cover 200, inner surface 201, groove 202, sealing area 203, peripheral area 204, reactor 500, reaction chamber 501, clamping assembly 502, opening 503, thermal insulation layer 504, heating element 505. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, 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, and do not indicate or imply 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 present invention.

[0028] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] refer to Figure 1 According to the sealing strip 100 of the first embodiment of the utility model, it includes a core rod 101 and a winding rope. The winding rope is wound around the outer peripheral surface of the core rod 101, and the winding rope is a carbon fiber rope 102. In this way, the outer periphery of the core rod 101 is wound with the carbon fiber rope 102, and the surface of the carbon fiber rope 102 is less likely to break than the aluminum silicate fiber in a high temperature environment, so that the service life of the sealing strip 100 is longer.

[0032] Sealing in high-temperature environments has always been a difficult problem to solve. For example, in some reactors for compound sintering or semiconductor processing, the temperature inside the furnace can be as high as 1400℃-2000℃. The currently commonly used high-temperature static seals basically use plates or ropes made of materials such as aluminum silicate fiber packing or graphite packing for static sealing, which cannot withstand such high temperatures. In addition, existing high-temperature sealing materials are all made into plates or ropes for use. The material woven into a rope is not easily damaged due to its continuity, but the sealing area is small, and when the seal is easily deformed, local sealing may occur. Making it into a plate shape solves the problem of small sealing area, but because it is all short fiber gluing, the strength of the rope is poor and it is very easy to be damaged. It should be noted that the carbon fiber rope 102 in the embodiment of the utility model is still elastic between 1400℃-2000℃, and in some embodiments of the utility model, reference Figure 1 The specific manufacturing method is as follows: after the carbon fiber rope 102 is tightly wound on the mandrel 101, the adjacent ropes will be deformed to a certain extent and fit tightly. The finished sealing strip 100 has a certain elasticity due to the characteristics of the carbon fiber rope 102. After the carbon fiber rope 102 is tightly wound on the mandrel 101 and is compressed, the spiral carbon fiber rope 102 undergoes elastic deformation, and the structure between the adjacent wound carbon fiber ropes 102 is more compact, which can better play a sealing role. Moreover, the sealing strip 100 of the embodiment of the utility model takes into account the dual advantages of the large area of ​​the plate-shaped seal and the high strength of the rope-mounted seal by winding the carbon fiber rope 102 outside the mandrel 101.

[0033] The carbon fiber rope 102 also has the following advantages: extremely high strength, its strength and tensile modulus are stronger than steel, this high strength property enables the carbon fiber rope 102 to withstand great tension, and is suitable for various applications under high loads and extreme conditions. The carbon fiber rope 102 has a low density and light weight, which can significantly reduce the weight of the sealing strip 100 and improve the overall performance. The carbon fiber rope 102 has excellent corrosion resistance and will not be affected by seawater, grease and other corrosive media, so it can undertake sealing work in complex environments. The carbon fiber rope 102 also has excellent fatigue resistance, and can maintain good performance even under repeated stress, without obvious performance degradation, so it can also have good elasticity. The carbon fiber rope 102 can still maintain good performance in a high temperature environment, and has excellent high temperature creep resistance, so it is suitable for sealing work in a high temperature environment.

[0034] In some embodiments of the present invention, the material of the core rod 101 is carbon. Carbon has good hardness, is not easy to deform, and can maintain stable chemical and physical properties at high temperatures. Using carbon as the core rod 101 can make the sealing strip 100 well used for sealing in high temperature environments. In some embodiments of the present invention, high temperature resistant hard materials such as chlorine oxide and silicon carbide can also be used as the core rod 101. The above materials can exist stably in an environment of 2000°C, have good thermal stability at high temperatures, are not easy to thermally expand or shrink, and can still maintain high hardness and strength. Moreover, their thermal expansion coefficients are usually low, so there will be no obvious deformation or cracking in the case of a sudden temperature change.

[0035] In some embodiments of the utility model, the cross-section of the mandrel 101 is in the shape of a rounded rectangle. Considering that the mandrel 101 needs to be rigid, it is difficult to make it into an irregular area. Compared with a circle, a rectangle is easier to process and can have a larger sealing area, effectively improving the sealing effect. The rounded corner design can reduce the friction of the edges and corners of the outer surface of the mandrel 101 on the carbon fiber rope 102 when it is wrapped around the carbon fiber rope 102, thereby increasing the service life. At the same time, it can reduce the friction between the edges and corners of the mandrel 101 and other equipment when the sealing strip 100 is installed on other equipment.

[0036] refer to Figure 1 In other embodiments of the present invention, the cross section of the mandrel 101 includes a middle section 104 and two edge sections 103. The middle section 104 is rectangular, and the edge sections 103 are semicircular. The straight sides of the edge sections 103 coincide with the wide sides of the rectangle. Such a design can also provide a larger sealing area, and the semicircular shape of the edge sections 103 can also reduce the friction of the edges and corners of the mandrel 101 on the carbon fiber rope 102 when the outer circumference of the mandrel 101 is wound around the carbon fiber rope 102, thereby increasing the service life. At the same time, when the sealing strip 100 is installed on other equipment, the friction between the edges and corners of the mandrel 101 and other equipment can be reduced.

[0037] It should be noted that the cross section of the core rod 101 may also be a circle, an ellipse or other shapes, and may be manufactured according to specific usage scenarios.

[0038] It should be noted that the shape of the sealing strip 100 can be a straight long strip, or an irregular curve or an arc, and can be manufactured and used according to specific usage scenarios.

[0039] According to the sealing cover 200 of the second embodiment of the utility model, it includes multiple sealing strips 100 of the utility model and a cover plate. The cover plate includes an inner surface 201, and the inner surface 201 includes a sealing area 203 and a peripheral area 204. The peripheral area 204 is arranged on the periphery of the sealing area 203. Multiple sealing strips 100 are installed on the inner surface 201 and isolate the sealing area 203 from the peripheral area 204. The periphery of the core rod 101 is wrapped with a carbon fiber rope 102. The surface of the carbon fiber rope 102 is less likely to break than aluminum silicate fiber in a high temperature environment, so that the service life of the sealing strip 100 is longer. The sealing strip 100 is installed in the cover plate so that the sealing cover 200 can also achieve a higher service life at high temperatures.

[0040] refer to Figure 2 and Figure 4 In some embodiments of the utility model, four grooves 202 are provided on the inner surface 201, two grooves 202 are spaced apart along the first direction, and the other two grooves 202 are spaced apart along the second direction, and any two of the first direction, the second direction and the normal direction of the inner surface 201 are perpendicular to each other. Four sealing strips 100 are provided, and the four sealing strips 100 are respectively embedded in the four grooves 202, and the sealing area 203 is rectangular. In some embodiments of the utility model, in order to maintain good sealing performance, the core rod 101 uses a high temperature resistant hard material, so the rectangular sealing area 203 is provided on the inner surface 201 so that the sealing strip 100 can cover the surrounding of the sealing area 203 well, and the rectangular sealing area is more convenient to process. At the same time, under the premise of the same area of ​​the sealing area 203, it has a smaller perimeter than the parallelogram, reducing the processing cost and the length of the sealing ring, and improving the sealing performance.

[0041] It should be noted that, in some embodiments of the present invention, after the sealing strip 100 is installed in the groove 202, the carbon fiber rope 102 on the outer periphery uses its own resilience to resist the side wall of the groove 202, so that a certain pressure can be created between the sealing strip 100 and the groove 202, thereby improving the sealing performance and providing a margin for slight deformation of the sealing strip 100 in a high temperature environment.

[0042] It should be noted that in some embodiments of the present invention, the carbon fiber rope 102 can also be wound with only one layer or multiple layers according to the gap between the sealing strip 100 and the groove 202 to ensure that the sealing strip 100 can be stably installed in the groove 202.

[0043] In some embodiments of the present invention, the cross section of the groove 202 is a rectangle, and one long side of the rectangle is parallel to the inner surface 201. The long side is parallel to the inner surface 201 so that the longer side of the sealing strip 100 can be used as a sealing surface after being placed in the groove 202, thereby having a larger sealing area, and since the short side does not participate in the sealing, but only acts as abutment against the sealing strip 100 when the sealing strip 100 is placed in the groove 202, making the short side can reduce the slot volume, and at the same time reduce the size of the sealing strip 100, thereby reducing the manufacturing cost.

[0044] It should be noted that the reference Figure 2 In some embodiments of the present invention, adjacent grooves 202 are partially extended at the junction, that is, a margin is provided. In this way, the sealing strip 100 has a partial margin after being installed in the groove 202 (refer to Figure 4 ), thereby preventing a gap from being generated at the junction of the sealing strip 100 due to partial dimensional error or deformation in a high temperature environment, thereby affecting the sealing performance.

[0045] refer to Figure 3 In some embodiments of the present invention, the width of the groove 202 gradually increases from the inner surface 201 to the inside of the sealing cover 200. In this way, after the sealing strip 100 is inserted into the groove 202, the carbon fiber rope 102 on the outer periphery of the sealing strip 100 can be used to support the inner surface 201 of the groove 202 by utilizing the resilience of the carbon fiber rope 102, thereby preventing the sealing strip 100 from falling off and improving the structural stability of the sealing strip 100 after installation.

[0046] refer to Figure 5 According to the third aspect of the present invention, the reactor 500 comprises a sealing cover 200 and a reaction chamber 501. The reaction chamber 501 is provided with an opening 503, the sealing cover 200 is arranged at the opening 503, and the sealing strip 100 abuts against the outer surface of the reaction chamber 501 to close the opening 503. The sealing cover 200 of the present invention has a longer service life, so that the reactor 500 using the sealing cover 200 can effectively seal the reaction chamber 501 for a longer time in a high temperature environment.

[0047] Specifically, the reaction furnace 500 of the embodiment of the utility model can be a reaction furnace 500 in equipment such as a lithium hydroxide sintering furnace, a silicon oxide vapor deposition furnace, and a silicon carbide degreasing sintering furnace.

[0048] refer to Figure 5In some embodiments of the present invention, the reactor 500 further includes a pressing assembly 502, which is in contact with a surface of the sealing cover 200 that is opposite to the opening 503, and is used to apply pressure directed toward the opening 503 to the sealing cover 200. The pressing assembly 502 can make the inner surface 201 of the sealing cover 200 fit the opening 503 more closely, thereby improving the fit of the sealing strip 100 and the sealing performance.

[0049] Specifically, in some embodiments of the present invention, the pressing assembly 502 is a cylinder ejection mechanism, which releases pressure on the side surface of the sealing cover 200 facing away from the opening 503 to thereby press the sealing cover 200. The pressing assembly 502 may also be a hydraulic ejection mechanism, or a clamping member, which clamps the sealing cover 200 and the outer contour of the opening 503 to thereby apply pressure directed toward the opening 503 to the sealing cover 200.

[0050] It should be noted that the reference Figure 5 In some embodiments of the utility model, a thermal insulation layer 504 is further provided on the outer peripheral surface of the reaction chamber 501. The thermal insulation layer 504 can reduce the impact of the high temperature in the reaction chamber 501 on the external environment and improve the service life of the reactor 500. Specifically, the thermal insulation layer 504 can be made of alumina ceramic fiber, aluminum silicate fiber felt, aluminum silicate fiber board, aluminum silicate microcrystalline board, high alumina brick, silicon carbide, nano high-temperature insulation board and other materials. These materials have the advantages of good high temperature resistance and low thermal conductivity.

[0051] It should be noted that the reference Figure 5 In some embodiments of the present invention, a heating element 505 is further provided between the reaction chamber 501 and the insulation layer 504. The heating element 505 is used to generate high temperature, so that the temperature in the reaction chamber 501 reaches the required temperature condition. At the same time, by reasonably distributing the heating element 505, the temperature distribution in the reaction chamber 501 can also be uniform, thereby avoiding uneven reaction or material damage due to local overheating or overcooling. The efficient heating element 505 can also reduce energy loss and improve the energy efficiency in the reaction chamber 501. Specifically, in some embodiments of the present invention, the materials used for the heating element include but are not limited to any one of silicon-molybdenum rods, silicon-carbon rods or lanthanum chromate. The above materials all have good high temperature resistance and high thermal radiation coefficient. In addition to the above three types of heating elements, the reactor 500 may also use other types of heating elements, such as alumina ceramic electric heating plates, mica heating wires, etc. These heating elements are selected according to specific application scenarios and needs.

[0052] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A sealing strip, characterized in that: include: Mandrel; The winding rope is wound around the outer peripheral surface of the mandrel, and the winding rope is a carbon fiber rope.

2. The sealing strip according to claim 1, characterized in that: The material of the core rod is carbon.

3. The sealing strip according to claim 1, characterized in that: The cross section of the core rod is in the shape of a rounded rectangle.

4. The sealing strip according to claim 1, characterized in that: The cross section of the core rod includes a middle section and two edge sections, the middle section is rectangular, the edge sections are semicircular, and the straight sides of the edge sections coincide with the wide sides of the rectangle.

5. A sealing cover, characterized in that: include: A plurality of sealing strips according to any one of claims 1 to 4; The cover plate comprises an inner surface, wherein the inner surface comprises a sealing area and a peripheral area, wherein the peripheral area is arranged at the periphery of the sealing area, and a plurality of sealing strips are installed on the inner surface and isolate the sealing area from the peripheral area.

6. The sealing cover according to claim 5, characterized in that: Four grooves are arranged on the inner surface, two of the grooves are spaced apart along a first direction, and the other two of the grooves are spaced apart along a second direction, and any two of the first direction, the second direction and the normal direction of the inner surface are perpendicular to each other; There are four sealing strips, which are respectively embedded in the four grooves, and the sealing area is rectangular.

7. The sealing cover according to claim 6, characterized in that: The cross section of the groove is a rectangle, and a long side of the rectangle is parallel to the inner surface.

8. The sealing cover according to claim 6, characterized in that: The width of the groove gradually increases from the inner surface to the inside of the sealing cover.

9. A reaction furnace, characterized in that: include: The sealing cover as claimed in any one of claims 5 to 8; The reaction chamber is provided with an opening, the sealing cover is arranged at the opening, and the sealing strip abuts against the outer surface of the reaction chamber to close the opening.

10. The reaction furnace according to claim 9, characterized in that: The reaction furnace further comprises a pressing assembly, wherein the pressing assembly is in contact with a surface of the sealing cover facing away from the opening, and the pressing assembly is used to apply pressure directed toward the opening to the sealing cover.

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