A split atmospheric furnace plugging device for durability testing and a split atmospheric furnace

Abstract

The application provides a split atmospheric furnace sealing device for endurance test and a split atmospheric furnace, which comprises an upper sealing assembly and a lower sealing assembly; the upper sealing assembly comprises a first high-temperature-resistant sealing piece and a first fixing piece which is bound to the first high-temperature-resistant sealing piece along the circumference of the first high-temperature-resistant sealing piece, and the first high-temperature-resistant sealing piece is configured to be sleeved on an upper pull rod; the lower sealing assembly comprises a second high-temperature-resistant sealing piece and a second fixing piece, the second high-temperature-resistant sealing piece is configured to be sleeved on a lower pull rod which can slide, the second high-temperature-resistant sealing piece comprises two second high-temperature-resistant sealing blocks, and the second fixing piece is bound to the second high-temperature-resistant sealing piece along the opposite direction of the two second high-temperature-resistant sealing blocks. While reducing the radiation heat dissipation and the conduction heat dissipation of the furnace mouth of the split atmospheric furnace, the device avoids the sealing failure caused by axial stretching and air flow disturbance in the test, so as to ensure the uniformity of the temperature field in the furnace in the test, reduce the energy consumption and the burning loss of the test machine, and improve the test quality and efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of metal testing equipment, specifically relating to a split atmospheric furnace sealing device and a split atmospheric furnace for long-term testing. Background Technology

[0002] High-temperature creep strength is a crucial basis for the design and material selection of high-temperature components, one of the most commonly used methods in engineering to evaluate the high-temperature performance of materials, and an important foundation for creep life prediction. The creep performance of metallic materials is determined through creep testing. Creep testing is similar to creep testing but simpler; it generally does not require measuring the elongation of the specimen during the test, but only the time to fracture under a given temperature and stress.

[0003] In prolonged or high-temperature endurance testing, conventional methods of sealing the upper and lower openings of atmospheric furnaces typically use aluminum silicate cotton covers. However, due to axial stress on the sample and tie rod assembly during testing, the aluminum silicate cotton covers may shift or detach, causing airflow disturbances due to the temperature difference between the inside and outside of the furnace. This results in significant temperature fluctuations within the furnace during testing. Furthermore, it exacerbates burn-through on the tie rod and other components of the testing machine, drastically reducing the lifespan of related connecting parts and making it unsuitable for long-term, high-temperature endurance testing. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art, and provides a sealing device for a split atmospheric furnace and a split atmospheric furnace for long-term testing.

[0005] This invention provides a sealing device for a split atmospheric furnace for long-term testing, comprising an upper sealing assembly and a lower sealing assembly; The upper sealing assembly includes: a first high-temperature resistant sealing member and a first fixing member. The first high-temperature resistant sealing member is configured to be disposed on the top of the split atmospheric furnace. The first high-temperature resistant sealing member includes two first high-temperature resistant sealing blocks arranged opposite each other. The two first high-temperature resistant sealing blocks form a first columnar space. The first high-temperature resistant sealing member is configured to be sleeved on the upper pull rod of the split atmospheric furnace through the first columnar space. The first fixing member binds the first high-temperature resistant sealing member circumferentially. The lower sealing assembly includes: a second high-temperature resistant sealing member and a second fixing member. The second high-temperature resistant sealing member includes two opposing second high-temperature resistant sealing blocks, which enclose a second columnar space. The second high-temperature resistant sealing member is configured to be fitted onto the pull rod of the slidable split atmospheric furnace through the second columnar space. The second fixing member is configured to be fixedly connected to the bottom of the split atmospheric furnace. The second fixing member restrains the second high-temperature resistant sealing member along the relative direction of the two second high-temperature resistant sealing blocks.

[0006] In some embodiments of the present invention, two first high-temperature resistant sealing blocks form a first high-temperature resistant sealing member with an annular structure, and the first fixing member is disposed on the outer ring of the first high-temperature resistant sealing member and arranged along the circumference of the first high-temperature resistant sealing member.

[0007] In some embodiments of the present invention, two second high-temperature resistant sealing blocks form a ring-shaped structure for the second high-temperature resistant sealing element.

[0008] In some embodiments of the present invention, the first high-temperature resistant sealing block is a high-alumina brick.

[0009] In some embodiments of the present invention, the second high-temperature resistant sealing block is a high-alumina brick.

[0010] In some embodiments of the present invention, the first fixing member is a clamp.

[0011] In some embodiments of the present invention, the second fastener includes two U-shaped frames disposed opposite to each other, the relative directions of the two U-shaped frames being perpendicular to the relative directions of the two second high-temperature resistant sealing blocks.

[0012] In some embodiments of the present invention, the two “U”-shaped frames are respectively located near the two ends of the second high-temperature resistant sealing block.

[0013] In some embodiments of the present invention, the lower sealing assembly further includes two fixing plates disposed opposite to each other, the fixing plates being configured to be fixedly connected to the bottom surface of the split atmospheric furnace, and the second fixing member being fixedly connected to the fixing plates.

[0014] This invention provides a split atmospheric furnace, which includes two furnace bodies arranged opposite to each other and a split atmospheric furnace sealing device for long-term testing. The split atmospheric furnace sealing device for long-term testing includes an upper sealing component and a lower sealing component. The upper sealing component is disposed on the top surface of the furnace body, and the lower sealing component is disposed on the bottom surface of the furnace body. The split atmospheric furnace sealing device for long-term testing is the split atmospheric furnace sealing device for long-term testing according to any of the above embodiments.

[0015] The bi-stage atmospheric furnace sealing device and bi-stage atmospheric furnace of this invention for endurance testing, through the cooperation of the first high-temperature resistant sealing member and the first fixing member of the upper sealing assembly, allow the first high-temperature resistant sealing member to be fitted onto the upper pull rod of the bi-stage atmospheric furnace, thereby achieving a seal on the top of the bi-stage atmospheric furnace; through the cooperation of the second high-temperature resistant sealing member and the second fixing member of the lower sealing assembly, allow the second high-temperature resistant sealing member to be fitted onto the lower pull rod of the bi-stage atmospheric furnace, thereby achieving a seal on the bottom of the bi-stage atmospheric furnace. The device of this application reduces radiative and conductive heat dissipation from the furnace opening of the bi-stage atmospheric furnace while avoiding sealing failure during testing due to axial tension and airflow disturbance, thus ensuring a uniform temperature field inside the bi-stage atmospheric furnace during high-temperature endurance axial tension or compression testing. This effectively reduces energy consumption and burn-out of testing equipment, improving the test quality and efficiency of high-temperature endurance testing. Furthermore, the device of this application also has advantages such as low cost, interchangeable and universal components, and convenient operation, making it suitable for large-scale high-temperature endurance axial tension or compression testing and possessing broad application prospects. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the split atmospheric furnace of the present invention (closed state); Figure 2 This is a schematic diagram of the structure of the split atmospheric furnace of the present invention (open state); Figure 3 for Figure 1 The diagram shows the upper sealing assembly structure of the split atmospheric furnace sealing device used for long-term testing; Figure 4 for Figure 1 The diagram shows the lower sealing assembly of the split atmospheric furnace sealing device used for long-term testing.

[0017] The labels in the attached diagram are as follows: 100. A split atmospheric furnace sealing device for long-term testing; 10. Upper sealing assembly; 11. First high-temperature resistant sealing component; 111. First high-temperature resistant sealing block; 12. First fixing component; 20. Lower sealing assembly; 21. Second high-temperature resistant sealing component; 211. Second high-temperature resistant sealing block; 22. Second fixing component; 221. "U" shaped frame; 23. Fixing plate; 200. Half-open atmospheric furnace; 210, Half furnace body; 220, Top surface; 230, Bottom surface; 240, Upper pull rod; 250, Lower pull rod. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the invention. The described embodiments are some, but not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0019] like Figures 1 to 4 As shown, this embodiment of the invention provides a split atmospheric furnace sealing device 100 for long-term testing, including an upper sealing assembly 10 and a lower sealing assembly 20; The upper sealing assembly 10 includes: a first high-temperature resistant sealing member 11 and a first fixing member 12. The first high-temperature resistant sealing member 11 is configured to be located on the top of the split atmospheric furnace 200 and to seal the upper opening. The first high-temperature resistant sealing member 11 includes two first high-temperature resistant sealing blocks 111 arranged opposite to each other. The two first high-temperature resistant sealing blocks 111 form a first columnar space. The first high-temperature resistant sealing member 11 is configured to be sleeved on the upper pull rod 240 of the split atmospheric furnace 200 through the first columnar space. The first fixing member 12 binds the first high-temperature resistant sealing member 11 circumferentially. The lower sealing assembly 20 includes a second high-temperature resistant sealing member 21 and a second fixing member 22. The second high-temperature resistant sealing member 21 is configured to be located at the bottom of the split-type atmospheric furnace 200 and to seal the lower opening. The second high-temperature resistant sealing member 21 includes two opposing second high-temperature resistant sealing blocks 211, which form a second columnar space. The second high-temperature resistant sealing member 21 is configured to be fitted onto the pull rod 250 of the slidable split-type atmospheric furnace 200 through the second columnar space. The second fixing member 22 is configured to be fixedly connected to the bottom of the split-type atmospheric furnace 200 and to bind the second high-temperature resistant sealing member 21 along the relative directions of the two second high-temperature resistant sealing blocks 211.

[0020] Specifically, the split-type atmospheric furnace sealing device 100 for long-term testing includes an upper sealing component 10 and a lower sealing component 20. The upper sealing component 10 is located at the top of the split-type atmospheric furnace 200 and blocks the upper opening of the split-type atmospheric furnace 200. The lower sealing component 20 is located at the bottom of the split-type atmospheric furnace 200 and blocks the lower opening of the split-type atmospheric furnace 200. The lower sealing component 20 blocks the lower opening of the split-type atmospheric furnace 200. Through the combined action of the upper sealing component 10 and the lower sealing component 20, the upper and lower ends of the split-type atmospheric furnace 200 are sealed to improve the sealing performance of the split-type atmospheric furnace 200.

[0021] like Figure 3 As shown, the upper sealing assembly 10 includes a first high-temperature resistant sealing element 11, wherein two opposing first high-temperature resistant sealing blocks 111 form a first high-temperature resistant sealing element 11 with a first columnar space. The first high-temperature resistant sealing element 11 is fitted onto the upper pull rod 240 through the first columnar space, and the first columnar space of the first high-temperature resistant sealing element 11 matches the shape and size of the upper pull rod 240 to ensure the sealing performance of the first high-temperature resistant sealing element 11. The first high-temperature resistant sealing element 11 is fixed to the top surface 220 of the split atmospheric furnace 200. The upper sealing assembly 10 also includes a first fixing element 12, which is arranged circumferentially around the first high-temperature resistant sealing element 11 and binds the first high-temperature resistant sealing element 11 composed of the two first high-temperature resistant sealing blocks 111 along its circumference to ensure that the first high-temperature resistant sealing element 11 will not loosen and to ensure the sealing performance of the first high-temperature resistant sealing element 11.

[0022] like Figure 4 As shown, the lower sealing assembly 20 includes a second high-temperature resistant sealing element 21. Two opposing second high-temperature resistant sealing blocks 211 form a second high-temperature resistant sealing element 21 with a second columnar space. The second high-temperature resistant sealing element 21 is fitted onto the pull rod 250 through the second columnar space, and the shape and size of the second columnar space of the second high-temperature resistant sealing element 21 match those of the pull rod 250 to ensure the sealing performance of the second high-temperature resistant sealing element 21. The second high-temperature resistant sealing element 21 is located at the bottom of the split atmospheric furnace 200, and the pull rod 250 is slidable relative to the second high-temperature resistant sealing element 21 to ensure the normal operation of the pull rod 250 of the split atmospheric furnace 200. The lower sealing assembly 20 also includes a second fixing element 22, which binds the second high-temperature resistant sealing element 21 along the relative directions of the two second high-temperature resistant sealing elements 21, so that the second high-temperature resistant sealing element 21 is always fitted onto the pull rod 250, ensuring the sealing performance of the second high-temperature resistant sealing element 21. The second fastener 22 is fixed to the bottom of the split-type atmospheric furnace 200. The second fastener 22 fixes the second high-temperature resistant sealing member 21 to the bottom surface 230 of the split-type atmospheric furnace 200 along the height direction of the split-type atmospheric furnace 200, so that the high-temperature gas in the split-type atmospheric furnace 200 will not leak through the gap between the second high-temperature resistant sealing member 21 and the bottom surface 230 of the split-type atmospheric furnace 200, thereby further improving the sealing performance of the second high-temperature resistant sealing member 21.

[0023] According to the present invention, the sealing device 100 for a split atmospheric furnace for long-term testing, through the cooperation of the first high-temperature resistant sealing member 11 and the first fixing member 12 of the upper sealing assembly 10, the first high-temperature resistant sealing member 11 is sleeved on the upper pull rod 240 of the split atmospheric furnace 200 and seals the upper opening, thereby achieving a seal on the top of the split atmospheric furnace 200; through the cooperation of the second high-temperature resistant sealing member 21 and the second fixing member 22 of the lower sealing assembly 20, the second high-temperature resistant sealing member 21 is sleeved on the lower pull rod 250 of the split atmospheric furnace 200 and seals the lower opening, thereby achieving a seal on the bottom of the split atmospheric furnace 200. The apparatus described in this application reduces radiative and conductive heat loss from the furnace opening of the split atmospheric furnace 200, while avoiding sealing failures during testing due to axial tension and airflow disturbances. This ensures a uniform temperature field within the split atmospheric furnace 200 during high-temperature endurance axial tension or compression testing, effectively reducing energy consumption and burn-out of testing equipment, and improving the test quality and efficiency of high-temperature endurance testing. Furthermore, the apparatus of this application has advantages such as low cost, interchangeable and universal components, and convenient operation, making it suitable for large-scale high-temperature endurance axial tension or compression testing and possessing broad application prospects.

[0024] like Figure 3 As shown, in some embodiments of the present invention, two first high-temperature resistant sealing blocks 111 form a ring-shaped first high-temperature resistant sealing member 11. The inner ring of the first high-temperature resistant sealing member 11 is sleeved on the upper pull rod 240. The inner ring size of the first high-temperature resistant sealing member 11 is adapted to the size of the upper pull rod 240. The outer ring diameter of the first high-temperature resistant sealing member 11 is larger than the upper opening diameter of the split atmospheric furnace 200 to prevent the first high-temperature resistant sealing member 11 from falling into the split atmospheric furnace 200 from the upper opening.

[0025] The outer ring of the first high-temperature resistant sealing component 11 is provided with a first fixing component 12. The first fixing component 12 is arranged circumferentially around the first high-temperature resistant sealing component 11 and binds the first high-temperature resistant sealing component 11 circumferentially to ensure that the two first high-temperature resistant sealing blocks 111 always form a first columnar space and will not loosen. Specifically, the first fixing component 12 can be at least two sets of snap-fit ​​and snap-fit ​​mating parts arranged at intervals along the outer ring of the first high-temperature resistant sealing component 11. At least one set of snap-fit ​​and snap-fit ​​mating parts connects the same end of the two first high-temperature resistant sealing blocks 111 that is close to each other, and at least one set of snap-fit ​​and snap-fit ​​mating parts connects the other same end of the two first high-temperature resistant sealing blocks 111 that is close to each other. The first fixing component 12 can also be a snap-fit ​​structure or a clamp structure that forms a ring structure around the circumference of the first high-temperature resistant sealing component 11.

[0026] In some embodiments of the present invention, the first fixing member 12 is a clamp. Specifically, the clamp extends circumferentially along the outer ring of the annular first high-temperature resistant sealing member 11 and forms a ring structure. The ring structure clamp binds the two opposing first high-temperature resistant sealing blocks 111 circumferentially, so that the two second high-temperature resistant sealing blocks 211 always form an annular structure, thereby improving the sealing performance of the first high-temperature resistant sealing member 11.

[0027] like Figure 4 As shown, in some embodiments of the present invention, two second high-temperature resistant sealing blocks 211 form a second high-temperature resistant sealing member 21 with an annular structure. The inner ring of the second high-temperature resistant sealing member 21 is sleeved on the pull rod 250, and the inner ring size of the second high-temperature resistant sealing member 21 is adapted to the diameter of the pull rod 250. The outer ring diameter of the second high-temperature resistant sealing member 21 can be larger than the lower opening diameter of the gas furnace.

[0028] In some embodiments of the present invention, the second fixing member 22 includes two oppositely arranged "U"-shaped frames 221, which bind the two second high-temperature resistant sealing blocks 211 along opposite directions. Specifically, the open end of the "U"-shaped frame 221 is connected to the bottom surface 230 of the split-type atmospheric furnace 200, and part of the second high-temperature resistant sealing block 211 is located inside the "U"-shaped frame 221, which fixes the second high-temperature resistant sealing block 211 to the bottom surface 230 of the split-type atmospheric furnace 200. Further, the two "U"-shaped frames 221 are arranged opposite to each other, and the relative direction of the two "U"-shaped frames 221 is perpendicular to the relative direction of the two second high-temperature resistant sealing blocks 211. The constraint force of the second fastener 22 can be further improved by the two spaced "U"-shaped frames 221, ensuring that the two second high-temperature resistant sealing blocks 211 will not loosen and will always have the second columnar space, that is, the second high-temperature resistant sealing component 21 will always be fitted onto the pull rod 250, ensuring the sealing performance of the second high-temperature resistant sealing component 21.

[0029] Furthermore, the two "U"-shaped frames 221 are arranged in parallel, and the distance between the two "U"-shaped frames 221 and the center of the inner ring of the second high-temperature resistant sealing component 21 is equal, so that the two second high-temperature resistant sealing blocks 211 are subjected to more uniform force and the service life of the second high-temperature resistant sealing component 21 is improved.

[0030] In some embodiments of the present invention, two "U"-shaped frames 221 are respectively located near the two ends of the second high-temperature resistant sealing block 211. By setting the two "U"-shaped frames 221 at the two ends of the second high-temperature resistant sealing block 211, the installation of the second high-temperature resistant sealing block 211 is made more convenient.

[0031] In some embodiments of the present invention, the lower sealing assembly 20 further includes two oppositely arranged fixing plates 23, the fixing plates 23 being configured to be fixedly connected to the bottom surface 230 of the split atmospheric furnace 200, and the second fixing member 22 being fixedly connected to the fixing plates 23. Specifically, the two fixing plates 23 are respectively fixedly connected to the bottom surfaces 230 of the two halves of the split atmospheric furnace 200, and a "U"-shaped frame 221 is connected to the side of each fixing plate 23 away from the bottom surface 230 of the split atmospheric furnace 200, and the open end of the "U"-shaped frame 221 is connected to the fixing plate 23, that is, the "U"-shaped frame 221 is fixed to the bottom surface 230 of the atmospheric furnace by the fixing plates 23. Two fixing plates 23 are arranged opposite each other and form a ring structure. The outer ring diameter of the ring structure formed by the fixing plates 23 is larger than the outer ring diameter of the second high-temperature resistant sealing member 21, and the inner ring diameter of the ring structure formed by the fixing plates 23 is smaller than the outer ring diameter of the second high-temperature resistant sealing member 21, so that the second high-temperature resistant sealing member 21 is located on the side of the fixing plate 23 away from the atmospheric furnace.

[0032] In some embodiments of the present invention, the first high-temperature resistant sealing block 111 is a high-alumina brick, which has high-temperature resistance, excellent corrosion resistance, and good thermal stability. In other embodiments of the present disclosure, the first high-temperature resistant sealing block 111 may also be a silica brick, clay brick, magnesia brick, magnesia-chrome brick, etc.

[0033] In some embodiments of the present invention, the second high-temperature resistant sealing block 211 is a high-alumina brick, which has high-temperature resistance, excellent corrosion resistance, and good thermal stability. In other embodiments of the present disclosure, the second high-temperature resistant sealing block 211 may also be a silica brick, clay brick, magnesia brick, magnesia-chrome brick, etc.

[0034] The device of the present invention also has the following advantages and beneficial effects: 1. The device of the present invention, by adapting to the sealing devices of the upper and lower parts of the open-atmosphere furnace in the high-temperature sustained axial tension or compression test, reduces the radiative and conductive heat dissipation of the furnace opening, while avoiding the problem of sealing failure during the test due to axial tension and airflow disturbance.

[0035] 2. The device of the present invention ensures uniform temperature field inside the open-atmosphere furnace during high-temperature sustained axial tensile or compression tests, thus guaranteeing stable and reliable test results. 3. The device of the present invention has the characteristics of low cost, easy maintenance and strong operability.

[0036] 4. The device of the present invention is suitable for high-temperature long-term axial tensile or compression testing, and can also be extended to other high-temperature mechanical testing fields.

[0037] The present invention provides a split atmospheric furnace 200, which includes two furnace bodies arranged opposite to each other and a split atmospheric furnace sealing device 100 for endurance testing. The split atmospheric furnace sealing device 100 for endurance testing includes an upper sealing component 10 and a lower sealing component 20. The upper sealing component 10 is disposed on the top surface 220 of the furnace body, and the lower sealing component 20 is disposed on the bottom surface 230 of the furnace body. The split atmospheric furnace sealing device 100 for endurance testing is the split atmospheric furnace sealing device 100 for endurance testing according to any of the above embodiments.

[0038] According to the present invention, the first high-temperature resistant sealing member 11 and the first fixing member 12 of the upper sealing assembly 10 are used to fit the upper pull rod 240 of the split atmospheric furnace 200 and seal the upper opening, thereby achieving a seal on the top of the split atmospheric furnace 200; the second high-temperature resistant sealing member 21 and the second fixing member 22 of the lower sealing assembly 20 are used to fit the lower pull rod 250 of the split atmospheric furnace 200 and seal the lower opening, thereby achieving a seal on the bottom of the split atmospheric furnace 200. The split atmospheric furnace 200 of this application reduces radiative and conductive heat dissipation at the furnace opening, while avoiding sealing failure during testing due to axial tension and airflow disturbance, thus ensuring a uniform temperature field inside the split atmospheric furnace 200 during high-temperature endurance axial tension or compression testing. This effectively reduces energy consumption and burn-out of testing equipment, improving the test quality and efficiency of high-temperature endurance testing. In addition, the split atmospheric furnace 200 of this application has the advantages of low cost, universal and replaceable parts, and convenient operation. It is suitable for large-scale high-temperature long-term axial tensile or compression testing and has broad application prospects.

[0039] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A sealing device for a split atmospheric furnace for long-term testing, characterized in that, Includes upper sealing assembly and lower sealing assembly; The upper sealing assembly includes: a first high-temperature resistant sealing member and a first fixing member. The first high-temperature resistant sealing member is configured to be disposed on the top of the split atmospheric furnace. The first high-temperature resistant sealing member includes two first high-temperature resistant sealing blocks arranged opposite each other. The two first high-temperature resistant sealing blocks form a first columnar space. The first high-temperature resistant sealing member is configured to be sleeved on the upper pull rod of the split atmospheric furnace through the first columnar space. The first fixing member binds the first high-temperature resistant sealing member circumferentially. The lower sealing assembly includes: a second high-temperature resistant sealing member and a second fixing member. The second high-temperature resistant sealing member includes two opposing second high-temperature resistant sealing blocks, which enclose a second columnar space. The second high-temperature resistant sealing member is configured to be fitted onto the pull rod of the slidable split atmospheric furnace through the second columnar space. The second fixing member is configured to be fixedly connected to the bottom of the split atmospheric furnace. The second fixing member restrains the second high-temperature resistant sealing member along the relative direction of the two second high-temperature resistant sealing blocks.

2. The split atmospheric furnace sealing device for long-term testing according to claim 1, characterized in that, The first high-temperature resistant sealing component is formed by two first high-temperature resistant sealing blocks forming a ring structure. The first fixing member is located on the outer ring of the first high-temperature resistant sealing component and is arranged along the circumference of the first high-temperature resistant sealing component.

3. The split atmospheric furnace sealing device for long-term testing according to claim 1, characterized in that, The second high-temperature resistant sealing component is formed by two second high-temperature resistant sealing blocks enclosing a ring structure.

4. The split atmospheric furnace sealing device for long-term testing according to claim 1, characterized in that, The first high-temperature resistant sealing block is a high-alumina brick.

5. The split atmospheric furnace sealing device for long-term testing according to claim 1, characterized in that, The second high-temperature resistant sealing block is a high-alumina brick.

6. The split atmospheric furnace sealing device for long-term testing according to claim 1, characterized in that, The first fastener is a clamp.

7. The split atmospheric furnace sealing device for long-term testing according to claim 1, characterized in that, The second fastener includes two U-shaped frames arranged opposite each other, the relative directions of the two U-shaped frames being perpendicular to the relative directions of the two second high-temperature resistant sealing blocks.

8. The split atmospheric furnace sealing device for long-term testing according to claim 7, characterized in that, The two "U"-shaped frames are respectively located near the two ends of the second high-temperature resistant sealing block.

9. The split atmospheric furnace sealing device for long-term testing according to claim 1, characterized in that, The lower sealing assembly also includes two fixing plates arranged opposite each other. The fixing plates are configured to be fixedly connected to the bottom surface of the split atmospheric furnace, and the second fixing member is fixedly connected to the fixing plates.

10. A split-type atmospheric furnace, characterized in that, The split atmospheric furnace includes two furnace bodies arranged opposite each other and a split atmospheric furnace sealing device for long-term testing. The split atmospheric furnace sealing device for long-term testing includes an upper sealing component and a lower sealing component. The upper sealing component is disposed on the top surface of the furnace body, and the lower sealing component is disposed on the bottom surface of the furnace body. The split atmospheric furnace sealing device for long-term testing is the split atmospheric furnace sealing device for long-term testing according to any one of claims 1 to 9.

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