Heat-insulating structure and reaction furnace

Abstract

The application belongs to the technical field of reaction furnace, and discloses a heat insulation structure and a reaction furnace, the heat insulation structure comprising a shell, a cover and a connecting assembly. The shell is hollow inside and is configured to be filled with heat insulation material; the first end of the connecting assembly is positioned at the upper edge of the opening of the shell and extends along the cover to the lower edge of the opening of the shell, and the second end of the connecting assembly is positioned at the lower edge of the opening of the cover or the shell to press the cover to the opening of the shell; the lower edge of the opening of the shell is provided with a clamping piece for clamping the second end of the cover or the connecting assembly. The heat insulation structure is a split structure, which is convenient to transport and assemble, has high reliability after assembly and ensures heat insulation effect.

Description

Technical Field

[0001] This invention relates to the field of reactor technology, and more particularly to a heat insulation structure and a reactor. Background Technology

[0002] In silicon wafer processing, the reactor tubes used are blind tubes, open at one end and closed at the other. These blind tubes generate a pressure difference during use. To reduce this pressure difference and prevent damage to the reactor tube due to excessive pressure, a common solution is to replace the blind tube structure with a through-tube body open at both ends, and then seal one end of the furnace tube body with a tail cap. A sealing structure is installed between the tail cap and the furnace tube body to ensure a tight seal.

[0003] The aforementioned sealing structure is generally made of rubber. During the reaction process, the heat in the furnace tube body will affect the sealing structure through thermal radiation and heat conduction, causing it to carbonize and become damaged. To solve this problem, a heat insulation device is installed between the internal space of the furnace tube body and the tail end cover to isolate most of the heat in the furnace tube body and prevent it from being transferred to the tail end cover and its sealing structure.

[0004] Existing insulation devices are generally integrated, which has a long production cycle and high processing costs. Improper handling during transportation can damage the insulation device.

[0005] Therefore, there is an urgent need for a heat-insulating structure and a reactor to solve the above problems. Summary of the Invention

[0006] According to one aspect of the present invention, the objective is to provide a heat insulation structure that is a modular structure, which is convenient for transportation and assembly, and has high reliability after assembly, ensuring the heat insulation effect.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] Thermal insulation structures, including:

[0009] The housing is hollow inside and is configured to be filled with thermal insulation material;

[0010] Cover;

[0011] A connecting component, wherein a first end of the connecting component is positioned at the upper edge of the opening of the housing and extends along the cover toward the lower edge of the opening of the housing, and a second end of the connecting component is positioned at the lower edge of the cover or the opening of the housing to press the cover into the opening of the housing;

[0012] A locking element is provided at the lower edge of the opening of the housing, which is used to lock the cover or the second end of the connecting assembly.

[0013] As a preferred embodiment of the heat insulation structure provided by the present invention, the first end of the connecting component is provided with a plug-in portion, the upper edge of the opening of the housing is provided with a mounting hole, the plug-in portion can be inserted and positioned in the mounting hole, and the side of the connecting component in the length direction abuts against the cover.

[0014] As a preferred embodiment of the heat insulation structure provided by the present invention, the connecting component is further provided with a stop portion, which is disposed below the insertion portion. The cross-sectional dimension of the stop portion is larger than the cross-sectional dimension of the mounting hole. When the insertion portion is inserted into the mounting hole, the stop portion can stop outside the mounting hole.

[0015] As a preferred embodiment of the heat insulation structure provided by the present invention, the second end of the connecting component abuts against the lower edge of the opening of the housing, and a snap-fit ​​portion is provided on one side of the second end of the connecting component. The snap-fit ​​component can be engaged with the snap-fit ​​portion to position the second end of the connecting component.

[0016] As a preferred embodiment of the heat insulation structure provided by the present invention, the side of the mounting member can abut against the cover to position the lower edge of the cover;

[0017] The heat insulation structure also includes a snap-fit ​​assembly that presses against the cover to press the cover into the opening of the housing. The snap-fit ​​assembly and the side of the cover away from the housing form an insertion groove, and the second end of the connecting assembly can be inserted into the insertion groove.

[0018] As a preferred embodiment of the heat insulation structure provided by the present invention, the snap-fit ​​assembly has a U-shaped structure, including a pressing part, a first snap hook and a second snap hook. The first snap hook and the second snap hook are respectively vertically arranged at both ends of the pressing part in the length direction. The pressing part abuts against the cover. The first snap hook and the second snap hook are respectively snapped onto both sides of the housing. The insertion groove is formed between the pressing part and the cover.

[0019] As a preferred embodiment of the heat insulation structure provided by the present invention, the mounting assembly is detachably connected to the cover.

[0020] As a preferred embodiment of the heat insulation structure provided by the present invention, the heat insulation structure is further provided with an avoidance structure, which is configured to avoid other components.

[0021] As a preferred embodiment of the heat insulation structure provided by the present invention, there are multiple connecting components, and the multiple connecting components are spaced apart along the width direction of the opening of the housing.

[0022] According to one aspect of the present invention, an object is to provide a reactor comprising a furnace tube and a heat insulation structure as described in any of the above embodiments, wherein a tail end cap is installed at the tail end of the furnace tube, and the heat insulation structure is disposed inside the furnace tube, separating the internal space of the furnace tube from the tail end cap.

[0023] The beneficial effects of this invention are:

[0024] The heat insulation structure provided by this invention includes a shell, a cover, and a connecting assembly. The shell is hollow and filled with heat insulation material. The cover seals the opening of the shell. In other words, the shell, the cover, and the heat insulation material between them can insulate the heat inside the furnace tube, preventing a large amount of heat from being directly transferred to the tail end cover, thereby protecting the sealing structure between the tail end cover and the furnace tube and preventing high-temperature damage to the sealing structure. The first end of the connecting assembly is positioned at the upper edge of the shell opening and extends along the cover towards the lower edge of the shell opening. The second end of the connecting assembly is positioned at the lower edge of the cover or the shell opening. A locking member is provided at the lower edge of the shell opening for engaging the second end of the cover or the connecting assembly. In other words, the connecting assembly allows the cover to be pressed against the shell opening, achieving positioning, improving the connection reliability between the shell and the cover, facilitating transportation and assembly of the shell and the cover, and ensuring high reliability after assembly, effectively guaranteeing the heat insulation effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the heat insulation structure provided in Embodiment 1 of the present invention. Figure 1 ;

[0026] Figure 2 This is an exploded view of the heat insulation structure provided in Embodiment 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the heat insulation structure provided in Embodiment 1 of the present invention. Figure 2 ;

[0028] Figure 4 yes Figure 3 A magnified view of a section marked A in the middle;

[0029] Figure 5 This is a schematic diagram of the heat insulation structure provided in Embodiment 2 of the present invention;

[0030] Figure 6 This is an exploded view of the heat insulation structure provided in Embodiment 2 of the present invention;

[0031] Figure 7 This is a schematic diagram of the card-mounted component provided in Embodiment 2 of the present invention;

[0032] Figure 8This is a side view of the card-mounted component provided in Embodiment 1 of the present invention;

[0033] Figure 9 This is a side view of another card-mounted component provided in Embodiment 1 of the present invention.

[0034] In the picture:

[0035] 10. Air intake pipe;

[0036] 100. Housing; 110. Mounting component; 111. First insert groove; 120. Mounting hole; 130. Clearance groove;

[0037] 200, Cover; 210, Insertion groove; 220, Second clearance hole; 230, Sealing plate;

[0038] 300. Connecting component; 310. Insertion part; 320. Stop part; 330. Snap-fit ​​part; 340. Connecting body part; 350. Bending part; 360. First snap-fit ​​part; 370. Second snap-fit ​​part; 380. Extension part; 390. Stop body part;

[0039] 400. Support section;

[0040] 500, mounting assembly; 510, pressing part; 520, first hook; 530, second hook; 540, third clearance hole. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0042] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0045] Example 1

[0046] This embodiment provides a heat insulation structure and a reactor. The reactor includes a furnace tube and the heat insulation structure. A tail end cap is installed at the tail end of the furnace tube, and a sealing ring is provided at the connection between the tail end cap and the furnace tube. The heat insulation structure is disposed inside the furnace tube, blocking the internal space of the furnace tube from the tail end cap. The air inlet pipe 10 passes through the heat insulation structure, enabling communication between the internal space of the furnace tube and the air inlet equipment. Through this heat insulation structure, most of the heat transferred from the internal space of the furnace tube to the sealing ring of the tail end cap via heat conduction can be blocked, preventing the rubber sealing ring from carbonizing and being damaged.

[0047] Figure 1 This diagram illustrates the structure of the heat insulation structure provided in Embodiment 1 of the present invention. Figure 1 ; Figure 2 An exploded view of the heat insulation structure provided in Embodiment 1 of the present invention is shown; Figure 3 This diagram illustrates the structure of the heat insulation structure provided in Embodiment 1 of the present invention. Figure 2 . Reference Figures 1-3 The thermal insulation structure includes a housing 100, a cover 200, and a connecting assembly 300. The cover 200 seals the opening of the housing 100, forming a filling space, which is configured to be filled with thermal insulation materials such as thermal insulation cotton. The connecting assembly 300 is used to position and press the cover 200 into the opening of the housing 100, ensuring reliable connection between the two.

[0048] In other words, this heat insulation structure can isolate the heat inside the furnace tube, preventing a large amount of heat from being directly transferred to the tail end cover, thereby protecting the sealing structure between the tail end cover and the furnace tube and preventing high-temperature damage to the sealing structure. The connecting component 300 ensures the structural integrity and reliability of the heat insulation structure, achieving a reliable connection between the shell 100 and the cover 200, while also facilitating the assembly of the shell 100 and the cover 200, effectively shortening the processing cycle. When the heat insulation structure is damaged, only the damaged parts need to be replaced, which helps reduce costs.

[0049] In some embodiments, the connecting component 300 is a rod-shaped structure with a rectangular cross-section, and its first end is positioned at the upper edge of the opening of the housing 100. The connecting component 300 extends along the lower edge of the cover 200 toward the opening of the housing 100, and its side along its length abuts against the side of the cover 200 opposite to the filling space. The second end of the connecting component 300 is positioned at the lower edge of the opening of the housing 100. The above arrangement achieves the connection of the cover 200, the housing 100, and the connecting component 300, so as to press the cover 200 against the opening of the housing 100.

[0050] Specifically, the upper and lower edges of the opening of the housing 100 extend away from the filling space, forming opposing wing-plate structures. The upper and lower edges of the opening of the housing 100 protrude from the side of the cover 200 away from the filling space. A mounting hole 120 is provided on the upper edge of the opening of the housing 100, which is used to position the first end of the connecting assembly 300. The first end of the connecting assembly 300 is provided with a insertion portion 310, which can be inserted into the mounting hole 120.

[0051] More specifically, the connecting assembly 300 is further provided with a stop portion 320, which is located below the insertion portion 310. The cross-sectional dimension of the stop portion 320 is larger than the cross-sectional dimension of the mounting hole 120. When the insertion portion 310 is inserted into the mounting hole 120, the stop portion 320 is located on the side where the upper edge of the opening of the housing 100 is directly opposite the lower edge of the opening of the housing 100, and can stop outside the mounting hole 120 to prevent the insertion portion 310 from coming out of the mounting hole 120.

[0052] Figure 4 Show Figure 3 A magnified view of the structure marked A in the middle, see reference. Figure 3 and Figure 4A latching member 110 is provided at the lower edge of the opening of the housing 100, which is used to latch the second end of the connecting assembly 300. The second end of the connecting assembly 300 is inserted into the gap between the latching member 110 and the cover 200, and abuts against the lower edge of the opening of the housing 100. One side of the second end abuts against the cover 200, and the side opposite to the cover 200 is provided with a latching part 330, which can be engaged with the latching member 110 to position the second end of the connecting assembly 300.

[0053] Specifically, the latching component 110 includes a first connecting portion, a first transition portion, and a first insert portion arranged sequentially in an inverted U-shape. The first connecting portion, the first transition portion, and the first insert portion form a first insert groove 111. The first connecting portion is fixed to the lower edge of the opening of the housing 100, and the opening of the first insert groove 111 faces the lower edge of the opening of the housing 100. A gap is left between the bottom end of the first insert portion and the lower edge of the opening of the housing 100. The latching portion 330 includes a second connecting portion and a second insert portion arranged sequentially in an L-shape. The second connecting portion is vertically fixed to the side of the second end of the connecting assembly 300, and the second insert portion is fixed to the second connecting portion and spaced apart from the side of the second end. The second connecting portion, the second insert portion, and the side of the second end form a second insert groove 331. The first embedding part is embedded in the second embedding groove 331, and the second embedding part is embedded in the first embedding groove 111 to realize the connection between the snap-fit ​​part 110 and the snap-fit ​​part 330.

[0054] In some embodiments, such as Figure 8As shown, the connecting assembly 300 includes a connecting body portion 340 and a bent portion 350 disposed below the connecting body portion 340. The connecting body portion 340 abuts against the outer surface of the cover 200. The bent portion 350 has a gap with the cover 200. Both sides of the lower end of the bent portion 350 are provided with locking portions, namely a first locking portion 360 and a second locking portion 370. The first locking portion 360 is disposed away from the outer surface of the cover 200 and is engaged with the mounting member 110 to position the second end of the connecting assembly 300. The second locking portion 370 is disposed close to the outer surface of the cover 200. A positioning groove is provided at a corresponding position on the cover 200 and the second locking portion 370. The second locking portion 370 is engaged with the positioning groove to further position the second end of the connecting assembly 300. In the above configuration, the connecting body 340 abuts against the outer surface of the cover 200, ensuring the contact area between the connecting assembly 300 and the cover 200. The bent portion 350 has a gap with the cover 200, providing operational space for the installation of the second latching portion 370. The first latching portion 360 engages with the latching member 110, enabling the cover 200 to be positioned in a first direction, which is away from the housing 100. The second latching portion 370 engages with the positioning groove, enabling the cover 200 to be positioned in a second direction, which is closer to the housing 100. By providing the first latching portion 360 and the second latching portion 370, the connecting assembly 300 can achieve positioning of the cover 200 in both the first and second directions, ensuring reliable installation. Furthermore, the connecting structures (such as the first snap-fit ​​portion 360 and the second snap-fit ​​portion 370 in the figure) are concentrated at the upper and lower ends of the connecting assembly 300. Only a snap-fit ​​member 110 needs to be provided at the lower edge of the opening of the housing 100, and a positioning groove needs to be provided at the lower end of the cover 200. There is no need to provide complex installation structures (such as the snap-fit ​​member 110 in the figure) that mate with the connecting assembly 300 on the housing 100 and the cover 200, nor is there a need to provide installation structures within the cavity of the housing 100. The entire installation of the cover 200 and the housing 100 is performed outside the cavity of the housing 100, which is convenient and quick, and helps reduce the difficulty of assembling and disassembling the cover 200 and the housing 100. The snap-fit ​​member 110 is detachably installed at the lower edge of the opening of the housing 100. When the connecting assembly 300 and the snap-fit ​​member 110 are repeatedly installed and disassembled, damage to the connecting assembly 300 and the snap-fit ​​member 110 can be easily replaced without replacing the entire cover 200 and the housing 100.

[0055] In some embodiments, such as Figure 9As shown, the connecting assembly 300 also includes a stop portion 320, which is located below the insertion portion 310. The cross-sectional dimension of the stop portion 320 is larger than that of the mounting hole 120. When the insertion portion 310 is inserted into the mounting hole 120, it can stop outside the mounting hole 120, preventing the insertion portion 310 from coming out of the mounting hole 120. The stop portion 320 includes a stop body portion 390 and an extension portion 380 formed by extending from the stop body portion 390 toward the cover 200. The extension portion 380 is provided with a fitting groove, and in the installed state, the upper end of the cover 200 is installed in the fitting groove. The snap-fit ​​portion 330 and the snap-fit ​​member 110 are engaged and connected to each other, enabling the cover 200 to be positioned in a first direction, which is the direction away from the housing 100. The upper end of the cover 200 engages with the fitting groove, enabling the cover 200 to be positioned in a second direction, which is the direction closer to the housing 100. By providing the snap-fit ​​part 330 and the fitting groove, the cover 200 can be positioned in both the first and second directions through the connecting assembly 300, ensuring reliable installation.

[0056] Preferably, there are multiple connecting components 300, which are spaced apart along the width direction of the opening of the housing 100. In this embodiment, there are two connecting components 300. Correspondingly, two mounting holes 120 are spaced apart along the upper edge of the opening of the housing 100, and two snap-fit ​​parts 110 are provided along the lower edge of the opening of the housing 100. The two connecting components 300 are spaced apart along the width direction of the opening of the housing 100, which can uniformly fix the cover 200 and improve the assembly reliability.

[0057] Continue to refer to Figures 1-3 The periphery of the shell 100 has an arc-shaped structure, the shape of which matches a portion of the cross-section of the furnace tube. That is, when the heat insulation structure is installed in the furnace tube, the periphery of the shell 100 can abut against the upper and side parts of the inner wall of the furnace tube to ensure the heat insulation effect and prevent heat leakage.

[0058] Specifically, the shape of the bottom of the housing 100 does not match the shape of the bottom of the inner wall of the furnace tube. That is, when the insulation structure is installed in the furnace tube, the bottom of the housing 100 is spaced apart from the bottom of the inner wall of the furnace tube, forming a clearance space. This clearance space is configured to allow passage of the exhaust pipe extending into the furnace tube. In this embodiment, the bottom of the housing 100 is a flat plate structure. In other embodiments, the bottom of the housing 100 may also be an arc-shaped plate structure that allows passage of the exhaust pipe. The shape of the bottom of the housing 100 is determined by its ability to allow passage of the exhaust pipe; this embodiment does not impose any limitations on this.

[0059] More specifically, the insulation structure also includes a clearance structure configured to avoid other components. These other components include the thermocouples and the air inlet pipe 10 inside the furnace tube. The clearance structure includes a clearance groove 130, a first clearance hole, a second clearance hole 220, and a third clearance hole 540. The clearance groove 130 is used to avoid the thermocouples inside the furnace tube, while the first clearance hole, the second clearance hole 220, and the third clearance hole 540 are used to avoid the air inlet pipe 10.

[0060] More specifically, the clearance groove 130 is disposed on the side of the housing 100. In this embodiment, there are two clearance grooves 130, which are respectively disposed on opposite sides of the peripheral side of the housing 100. A thermocouple is installed on the inner wall of the furnace tube, and when the housing 100 abuts against the inner wall of the furnace tube, the thermocouple can be accommodated in the clearance groove 130. The clearance groove 130 can prevent interference between the heat insulation structure and the thermocouple on the inner wall of the furnace tube.

[0061] More specifically, a first clearance hole is formed in the housing 100, a second clearance hole 220 is formed in the cover 200, and a third clearance hole 540 is formed in the pressing part 510. The first clearance hole, the second clearance hole 220, and the third clearance hole 540 are directly opposite each other, and the first clearance hole, the second clearance hole 220, and the third clearance hole 540 can prevent the heat insulation structure from obstructing the air intake process of the furnace tube.

[0062] Preferably, the heat insulation structure further includes a support portion 400. The housing 100 indirectly contacts the inner wall of the furnace tube through the support portion 400, and the contact area between the support portion 400 and the inner wall of the furnace tube is smaller than the contact area between the housing 100 and the inner wall of the furnace tube in direct contact. In this embodiment, there are multiple support portions 400, and the multiple support portions 400 are arrayed and arranged on the bottom side of the housing 100 away from the filling space. The contact surface between the support portion 400 and the bottom of the inner wall of the furnace tube is arc-shaped, which can reduce the contact area between the bottom of the housing 100 and the bottom of the inner wall of the furnace tube. Byproducts generated during the reaction, such as boric acid, will only accumulate at the bottom of the support portion 400, with a small adhesion area, making separation easier and avoiding the problem of boric acid and other substances sticking the bottom of the housing 100 to the bottom of the inner wall of the furnace tube and making separation difficult.

[0063] Optionally, the heat insulation structure further includes an installation auxiliary component, which protrudes from the side of the cover 200 opposite to the housing 100; or, the installation auxiliary component protrudes from the side of the housing 100 opposite to the cover 200. In this embodiment, the installation auxiliary component is a cylindrical component with a cross-sectional dimension much smaller than that of the housing 100. When installing the heat insulation structure, the operator can hold the installation auxiliary component with one hand and support the bottom of the housing 100 with the other hand to insert the heat insulation structure into the target position in the furnace tube from the tail end opening.

[0064] Optionally, in other embodiments, if the lifting ring for installing the thermocouple in the furnace tube is located far from the opening at the tail end of the furnace tube, the aforementioned installation auxiliary components may not be required. The operator can then guide the insulation structure from the tail end opening of the furnace tube into the target position by grasping the two clearance slots 130.

[0065] Example 2

[0066] This embodiment provides a heat insulation structure and a reactor. The difference between this embodiment and Embodiment 1 lies in the positioning method of the mounting component 110 and the connecting assembly 300 on the cover 200.

[0067] Specifically, Figure 5 This diagram shows a schematic diagram of the heat insulation structure provided in Embodiment 2 of the present invention; Figure 6 An exploded view of the heat insulation structure provided in Embodiment 2 of the present invention is shown. (Refer to...) Figure 5 and Figure 6 The second end of the connecting component 300 is positioned on the side of the cover 200 away from the filling space. A latching member 110 is provided at the lower edge of the opening of the housing 100. The latching member 110 has a rectangular block structure and can press against the side of the cover 200 away from the filling space to position the lower edge of the cover 200.

[0068] Figure 7 This diagram illustrates the structure of the card-mounted assembly provided in Embodiment 2 of the present invention. (Refer to...) Figures 5-7 The heat insulation structure also includes a snap-fit ​​assembly 500. The snap-fit ​​assembly 500 is detachably connected to the cover 200 and presses against the cover 200 to press the cover 200 into the opening of the housing 100. The snap-fit ​​assembly 500 and the side of the cover 200 facing away from the housing 100 form an insertion groove 210, and the second end of the connecting assembly 300 can be inserted into the insertion groove 210. When the connecting assembly 300 and the snap-fit ​​assembly 500 are repeatedly installed and removed, damage to the connecting assembly 300 and the snap-fit ​​assembly 500 is easily replaceable without needing to replace the entire cover 200 and housing 100.

[0069] Specifically, the latching assembly 500 has a U-shaped structure, including a pressing part 510, a first latch 520, and a second latch 530. The first latch 520 and the second latch 530 are respectively vertically disposed at both ends of the pressing part 510 along its length. The pressing part 510 presses against the cover 200, and the insertion groove 210 is formed between the pressing part 510 and the cover 200. Both the first latch 520 and the second latch 530 are elastic and can be made of elastic stainless steel, enabling them to be latched onto both sides of the housing 100 to position and press the cover 200 against the opening of the housing 100.

[0070] More specifically, a portion of the pressing part 510 protrudes in a direction away from the first hook 520 and the second hook 530, forming a bottom plate of the insertion groove 210 and three adjacent side plates. When the pressing part 510 presses against the cover 200, a portion of the cover 200 can act as another side plate of the insertion groove 210. The second end of the connecting assembly 300 is inserted into the insertion groove 210, the bottom plate of the insertion groove 210 is supported on the bottom of the second end of the connecting assembly 300, and the four side plates of the insertion groove 210 surround the periphery of the second end of the connecting assembly 300 to position the second end of the connecting assembly 300.

[0071] With the above configuration, the first end of the connecting component 300 is positioned at the upper edge of the housing opening, which can press against the upper edge of the cover 200. The second end of the connecting component 300 is inserted into the insertion groove 210, and the side of the connecting component 300 in the length direction presses against the middle position in the height direction of the cover 200. With the positioning function of the mounting component 110 on the lower edge of the cover 200, a reliable connection between the cover 200 and the housing 100 is achieved.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A heat-insulating structure for furnace tubes in a reaction furnace, characterized in that, include: The housing (100) is hollow inside and is configured to be filled with thermal insulation material; Cover (200); A connecting component (300) has a first end positioned at the upper edge of the opening of the housing (100) and extending along the cover (200) toward the lower edge of the opening of the housing (100), and a second end positioned at the lower edge of the cover (200) or the opening of the housing (100) to press the cover (200) against the opening of the housing (100); A snap-fit ​​component (110) is provided at the lower edge of the opening of the housing (100), the snap-fit ​​component (110) being used to snap onto the second end of the cover (200) or the connecting assembly (300); The first end of the connecting component (300) is provided with a plug-in portion (310), and the upper edge of the opening of the housing (100) is provided with a mounting hole (120). The plug-in portion (310) can be inserted into the mounting hole (120), and the side of the connecting component (300) in the length direction abuts against the cover (200).

2. The heat insulation structure according to claim 1, characterized in that, The connecting component (300) is further provided with a stop (320), which is located below the plug-in portion (310). The cross-sectional dimension of the stop (320) is larger than that of the mounting hole (120). When the plug-in portion (310) is inserted into the mounting hole (120), the stop (320) can stop outside the mounting hole (120).

3. The heat insulation structure according to claim 1 or 2, characterized in that, The second end of the connecting component (300) abuts against the lower edge of the opening of the housing (100). A snap-fit ​​part (330) is provided on one side of the second end of the connecting component (300). The snap-fit ​​part (110) can be engaged with the snap-fit ​​part (330) to position the second end of the connecting component (300).

4. The heat insulation structure according to claim 1 or 2, characterized in that, The side of the mounting piece (110) can abut against the cover (200) to position the lower edge of the cover (200); The heat insulation structure also includes a snap-fit ​​assembly (500) that presses against the cover (200) to press the cover (200) into the opening of the housing (100). The snap-fit ​​assembly (500) and the cover (200) form an insertion groove (210) on the side away from the housing (100). The second end of the connecting assembly (300) can be inserted into the insertion groove (210).

5. The heat insulation structure according to claim 4, characterized in that, The mounting assembly (500) has a U-shaped structure and includes a pressing part (510), a first hook (520) and a second hook (530). The first hook (520) and the second hook (530) are respectively vertically arranged at both ends of the pressing part (510) along its length. The pressing part (510) presses against the cover (200). The first hook (520) and the second hook (530) are respectively mounted on both sides of the housing (100). The insertion groove (210) is formed between the pressing part (510) and the cover (200).

6. The heat insulation structure according to claim 4, characterized in that, The mounting assembly (500) is detachably connected to the cover (200).

7. The thermal insulation structure according to any one of claims 1-2, characterized in that, The thermal insulation structure is also provided with a clearance structure, which is configured to avoid other components.

8. The thermal insulation structure according to any one of claims 1-2, characterized in that, There are multiple connecting components (300), and the multiple connecting components (300) are spaced apart along the width direction of the opening of the housing (100).

9. A reactor, characterized in that, It includes a furnace tube and a heat insulation structure as described in any one of claims 1-8, wherein a tail end cap is installed at the tail end of the furnace tube, and the heat insulation structure is disposed inside the furnace tube, separating the internal space of the furnace tube from the tail end cap.

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