Temperature measuring device in furnace

Abstract

The utility model discloses an in-furnace temperature measuring device, which comprises a connecting rod, a plurality of connecting rings, a cross rod and a temperature sensor, two ends of the connecting rod are respectively and fixedly connected with a first contact disc and a second contact disc, the plurality of connecting rings are connected on the connecting rod in a sliding manner, the connecting rings are in threaded connection with bolts, and the cross rod is in threaded connection with the bolts. One side wall of the bolt makes contact with the outer wall of the connecting rod, the cross rod is fixedly connected to the connecting ring, the temperature sensor is fixedly connected to the cross rod, and the connecting rod comprises a first connecting rod body and a second connecting rod body. According to the in-furnace temperature measuring device, the topmost layer space and the bottommost layer space of a positioning structure can be briefly introduced, the height of each temperature measuring device can be adjusted in five stages, when an oxidation furnace is switched, the temperature measuring devices do not need to be completely disassembled and secondarily installed, the assembling and disassembling steps are reduced, and the cost is reduced. The efficiency of moving the temperature measuring device to the next pre-oxidation furnace is improved, and the temperature in the pre-oxidation furnace can be measured.

Description

Technical Field

[0001] The utility model belongs to the technical field of temperature measuring devices, in particular to a temperature measuring device in a furnace. Background Art

[0002] PAN-based (polyacrylonitrile-based) carbon fiber production lines require pre-oxidation of PAN-based precursors (carbon fiber filaments are called precursors before pre-oxidation) in a furnace. The equipment for pre-oxidation of PAN-based precursors is called a pre-oxidation furnace, and its function is to control the temperature in the furnace to make the temperature more uniform. Generally speaking, the best furnace temperature difference is ±1.5°C, because the length of the pre-oxidation furnace is more than ten to several dozen meters, and the height is three to ten meters. The larger the furnace cavity, the greater the temperature difference. Since the temperature difference of the pre-oxidation furnace requires precision, the temperature of the furnace cavity must be tested. Figure 1 As shown, the prior art generally uses stacked positioning seats to layer the space inside the furnace. The positioning seats are installed on a base, which is used to fix the positioning seats. Crossbars are installed between adjacent positioning seats, and temperature sensors are installed on the crossbars to measure the temperature of each layer of space.

[0003] Since the positioning structure of the positioning crossbar is assembled from multiple positioning seats, if the assembly process is not stable, it is easy to cause the crossbar to be unstable and cause the crossbar to fall over. In addition, the temperature of the top space and the bottom space of the positioning structure cannot be detected, and the spacing between each layer is fixed, which is not conducive to adjusting the layer spacing. When the temperature measuring device is moved to a different oxidation furnace, it needs to be reassembled, and the assembly and disassembly are troublesome, time-consuming and labor-intensive, which is not conducive to measuring the temperature in the pre-oxidation furnace.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The purpose of the present invention is to provide a temperature measuring device in a furnace, which can solve the technical problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by a specific embodiment of the present invention is as follows:

[0007] A temperature measuring device in a furnace includes a connecting rod, multiple connecting rings, a cross bar and a temperature sensor, wherein the two ends of the connecting rod are respectively fixedly connected to a first contact plate and a second contact plate, the multiple connecting rings are slidably connected to the connecting rod, a bolt is threadedly connected to the connecting ring, a side wall of the bolt contacts the outer wall of the connecting rod, the cross bar is fixedly connected to the connecting ring, and the temperature sensor is fixedly connected to the cross bar.

[0008] In one or more embodiments of the present invention, the connecting rod includes a first connecting rod and a second connecting rod, the first contact plate is installed at one end of the first connecting rod, the second contact plate is installed at one end of the second connecting rod, the first connecting rod is provided with a sliding groove matching the second connecting rod, and the end of the second connecting rod away from the second contact plate is slidably connected in the sliding groove.

[0009] In one or more embodiments of the present invention, a clamp for locking the second connecting rod is installed at one end of the first connecting rod away from the first contact disk.

[0010] In one or more embodiments of the present invention, a first ridge is fixedly connected to the first connecting rod, a second ridge is fixedly connected to the second connecting rod, and an inner wall of the connecting ring matches the first ridge and the second ridge.

[0011] In one or more embodiments of the present invention, a first scale line is provided on the outer wall of the first connecting rod, and a second scale line is provided on the outer wall of the second connecting rod.

[0012] In one or more embodiments of the present invention, the connecting ring includes an inner ring and an outer ring, the inner ring and the outer ring are rotatably connected, the inner ring is located at the lower end of the outer ring and is provided with a threaded hole, the bolt is threadedly connected to the threaded hole, and the other end is in contact with the outer wall of the connecting rod.

[0013] In one or more embodiments of the present invention, the upper end surface of the inner ring is fixedly connected to an elastic connector that matches the outer ring, and the upper end surface of the outer ring is provided with a third scale line.

[0014] In one or more embodiments of the present invention, a starting groove matching the elastic connecting piece is provided on the side wall of the outer ring.

[0015] In one or more embodiments of the present invention, the cross bar includes a first rod and a second rod, the first rod and the second rod are slidably connected, and the first rod is provided with a clamp for locking the second rod.

[0016] In one or more embodiments of the present invention, a fourth scale line is provided on the outer wall of the second rod.

[0017] Compared with the prior art, the utility model provides an in-furnace temperature measuring device, and each temperature measuring device has an adjustable height. When switching the oxidation furnace, there is no need to completely disassemble and reinstall the temperature measuring device, which reduces the assembly and disassembly steps, improves the efficiency of moving the temperature measuring device to the next pre-oxidation furnace, and is conducive to measuring the temperature in the pre-oxidation furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural diagram of the prior art;

[0020] Figure 2 This is a schematic diagram of the structure of a temperature measuring device in a furnace in one embodiment of the present invention. Figure 1 ;

[0021] Figure 3 This is a cross-sectional view of a temperature measuring device in a furnace according to an embodiment of the present invention;

[0022] Figure 4 This is a first state diagram of a temperature measuring device in a furnace in one embodiment of the present utility model;

[0023] Figure 5 This is a second state diagram of a temperature measuring device in a furnace in one embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the structure of a temperature measuring device in a furnace in one embodiment of the present invention. Figure 2 ;

[0025] Figure 7 for Figure 6 Schematic diagram of the structure at A in the middle;

[0026] Figure 8 This is an exploded view of a temperature measuring device in a furnace in one embodiment of the present invention;

[0027] Figure 9 This is a schematic structural diagram of a connecting ring in one embodiment of the present utility model;

[0028] Figure 10 It is a cross-sectional view of a connecting ring in one embodiment of the present invention.

[0029] Description of main reference numerals:

[0030] 1. First connecting rod; 11. First contact plate; 12. Slide groove; 13. First scale line; 14. First ridge; 2. Second connecting rod; 21. Second contact plate; 22. Second scale line; 23. Second ridge; 3. Connecting ring; 31. Inner ring; 311. Threaded hole; 32. Outer ring; 321. Third scale line; 322. Starting groove; 4. Bolt; 5. Crossbar; 51. First rod body; 52. Second rod body; 521. Fourth scale line; 6. Temperature sensor; 7. Tightening hoop; 8. Elastic connector. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0032] like Figures 2 to 5 As shown, a furnace temperature measurement device in one embodiment of the present invention includes a connecting rod with multiple connecting rings 3 slidably connected thereto. A crossbar 5 is fixed to the connecting rings 3. A temperature sensor 6 is mounted on the end of the crossbar 5 away from the connecting rings 3. The temperature sensor 6 is used to detect the temperature within the pre-oxidation furnace. Typically, two crossbars 5 are mounted on the connecting ring 3. The two crossbars 5 are arranged transversely on the connecting ring 3 and aligned. Both crossbars 5 are mounted with a temperature sensor 6. In other words, two temperature sensors 6 are installed within a single space, improving the accuracy of temperature detection.

[0033] Specifically, such as Figures 2 to 5 As shown, the connecting rod is fixedly connected to a first contact plate 11 and a second contact plate 21 at each end. The first and second contact plates 11 and 21 contact the inner wall of the pre-oxidation furnace, allowing the connecting rod to be fixed in the pre-oxidation furnace. A bolt 4 is threadedly connected to the connecting ring 3. The bolt 4 passes through a side wall of the connecting ring 3 and contacts the outer wall of the connecting rod at one end, locking the connecting ring 3 and minimizing the impact of temperature measurement accuracy caused by displacement of the connecting ring 3.

[0034] like Figures 2 to 5As shown, the connecting rods include a first connecting rod 1 and a second connecting rod 2, with a plurality of connecting rings 3 slidably connected to the first connecting rod 1 and the second connecting rod 2, respectively. A first contact disc 11 is fixedly connected to one end of the first connecting rod 1, and a second contact disc 21 is fixedly connected to one end of the second connecting rod 2. A chute 12 is defined at the end of the first connecting rod 1 away from the first contact disc 11, and the end of the second connecting rod 2 away from the second contact disc 21 is located within the chute 12. That is, the first connecting rod 1 and the second connecting rod 2 are slidably connected. By providing the first connecting rod 1 and the second connecting rod 2, the length of the connecting rods can be changed. The length of the connecting rods can be changed according to the sizes of pre-oxidation furnaces, allowing the temperature measurement assembly to adapt to pre-oxidation furnaces of different sizes.

[0035] like Figures 2 to 5 As shown, a tightening hoop 7 for stopping the second connecting rod 2 from sliding is also installed on the first connecting rod 1 . The tightening hoop 7 can fix the second connecting rod 2 so that the second connecting rod 2 does not continue to slide in the sliding groove 12 .

[0036] In this embodiment, when using the temperature measuring device, multiple connecting rings 3 are first sleeved onto the first connecting rod 1 and the second connecting rod 2, and then the first connecting rod 1 and the second connecting rod 2 are assembled. The assembled temperature measuring device is placed in the pre-oxidation furnace, and the position of the second connecting rod 2 in the chute 12 is adjusted so that the first and second connecting rods 1 and 2 can adapt to the height of the pre-oxidation furnace. The connecting rings 3 are then slid onto the first and second connecting rods 1 and 2 to adjust their height according to actual conditions. The connecting rings 3 move with the crossbar 5, which in turn moves with the temperature sensor 6, allowing the temperature sensor 6 to reach the temperature measurement position.

[0037] Preferably, the inner wall of the connecting ring 3 and the outer wall of the connecting rod can be an interference fit. When the connecting ring 3 slides to a certain position, the connecting ring 3 is loosened, and the connecting ring 3 will not slide downward due to gravity, so that the connecting ring 3 can be pre-fixed, and then the connecting ring 3 and the connecting rod can be further fixed by the bolt 4.

[0038] In this embodiment, by providing first and second connecting rods 1 and 2, the length of the connecting rods can be adjusted, allowing the temperature measuring device to adapt to pre-oxidation furnaces of different sizes. Furthermore, the first and second contact plates 11 and 21 contact the inner wall of the pre-oxidation furnace, so that the first and second contact plates 11 and 21 are pressed against the inner wall of the pre-oxidation furnace, thereby securing the connecting rods and preventing them from tipping over during adjustment. The connecting ring 3 slides on the connecting rod, making it easy to adjust its position.

[0039] Compared to the prior art, the temperature measuring device of this embodiment only requires adjusting the position of the connecting ring 3 during installation, eliminating the need for cumbersome assembly steps. This makes operation more convenient, saves time and effort, and facilitates temperature measurement within the pre-oxidation furnace. The temperature measuring device also has a simpler structure without excessive parts, making it more portable.

[0040] In another embodiment, Figures 6 to 10 As shown, a first ridge 14 is fixedly connected to the first connecting rod 1, and a second ridge 23 is fixedly connected to the second connecting rod 2. That is, the shape of the chute 12 matches the shape of the second ridge 23 on the second connecting rod 2. The cooperation between the first ridge 14 and the second ridge 23 prevents the second connecting rod 2 from rotating within the chute 12 during the sliding process of the first and second connecting rods 1 and 2, minimizing the possibility of the temperature sensor 6 being shifted due to rotation of the second connecting rod 2. Furthermore, when the connecting ring 3 slides on the first and second connecting rods 1 and 2, the inner wall of the connecting ring 3 matches the first and second ridges 14 and 23, preventing the connecting ring 3 from rotating on the first and second connecting rods 1 and 2. This minimizes the possibility of the temperature sensor 6 being shifted due to rotation of the connecting ring 3, thereby improving the accuracy of the temperature measurement device.

[0041] like Figures 6 to 9 As shown, the first ridge 14 and the second ridge 23 are respectively arranged along the axis of the first connecting rod 1 and the second connecting rod 2, and the first ridge 14 and the second ridge 23 are parallel to the axis of the first connecting rod 1 and the second connecting rod 2. The first ridge 14 and the second ridge 23 are respectively in contact with the groove wall of the chute 12.

[0042] In order to facilitate the adjustment of the position of the temperature sensor 6, as shown in FIG. Figures 6 to 8 As shown, first scale lines 13 are provided on the outer wall of the first connecting rod 1, and second scale lines 22 are provided on the outer wall of the second connecting rod 2. The first scale lines 13 and the second scale lines 22 provide a visual and readable temperature indication to determine the spacing between adjacent temperature sensors 6 and the current position of the temperature sensor 6 in the pre-oxidation furnace, which is simple to operate. The second scale lines 22 can also be used to determine the overall length of the first connecting rod 1 and the second connecting rod 2.

[0043] The provision of the first ridge 14 and the second ridge 23 will result in the connection ring 3 being unable to rotate on the first connection rod 1 and the second connection rod 2, which is not conducive to changing the position of the temperature sensor 6 and is not conducive to temperature detection in the pre-oxidation furnace. Figures 6 to 10As shown, the connecting ring 3 includes an inner ring 31 and an outer ring 32. The inner ring 31 is slidably connected to the connecting rod, and the outer ring 32 is rotatably connected to the inner ring 31. Rotating the outer ring 32 can rotate the crossbar 5 and thus the temperature sensor 6, thereby changing the position of the temperature sensor 6 and realizing temperature detection at different positions in the pre-oxidation furnace.

[0044] like Figures 9 and 10 As shown, inner ring 31 has a threaded hole 311 at the lower end of outer ring 32. Bolt 4 is threadedly connected to threaded hole 311, and its other end contacts the outer wall of the connecting rod. Tightening bolt 4 secures inner ring 31 to the connecting rod, while loosening it allows inner ring 31 to slide up and down on the connecting rod.

[0045] like Figures 9 and 10 As shown, the inner ring 31 and the outer ring 32 are in an interference fit. When the outer ring 32 rotates to a certain angle, the force of rotating the outer ring 32 is removed, and the outer ring 32 is unlikely to continue shaking. An elastic connector 8 is fixedly connected to the inner ring 31. The other end of the elastic connector 8 contacts the outer wall of the outer ring 32 and can also apply a certain amount of pressure to the outer ring 32, thereby increasing the friction between the inner ring 31 and the outer ring 32 and further locking the outer ring 32 from rotating. A plurality of third scale lines 321 are also provided on the upper end surface of the outer ring 32. The third scale lines 321 match the elastic connector 8. The third scale lines 321 and the elastic connector 8 can be used to determine the angle of rotation of the outer ring 32, thereby determining the position of the temperature sensor 6. Adjusting the angle of the temperature sensor 6 facilitates temperature detection at different positions in the pre-oxidation furnace.

[0046] like Figure 9 As shown, a starting groove 322 is further provided on the side wall of the outer ring 32, and one end of the elastic connector 8 can be snapped into the starting groove 322. When the elastic connector 8 is snapped into the starting groove 322, the cross bar 5 is in the initial state, which is convenient for the initial positioning of the cross bar 5 and the initial positioning of the temperature sensor 6, so that the temperature sensor 6 is in the initial state during installation, which is convenient for adjusting the position of the temperature sensor 6 after assembly is completed.

[0047] like Figures 6 to 8As shown, the crossbar 5 includes a first rod body 51 and a second rod body 52, which are slidably connected. The first rod body 51 is provided with a clamp for locking the second rod body 52. ​​Through the cooperation of the first rod body 51 and the second rod body 52, the position of the temperature sensor 6 can be extended outward, so that the temperature sensor 6 can detect the temperature of the pre-oxidation furnace at a longer distance. This allows the temperature measuring device to adapt to pre-oxidation furnaces of different sizes. A fourth scale line 521 is provided on the outer wall of the second rod body 52. ​​The fourth scale line 521 can be used to determine the length of the crossbar 5, and thus the distance between the temperature sensor 6 and the connecting rod. The length of the crossbar 5 is determined during assembly to facilitate the placement of the assembled temperature measuring device into the pre-oxidation furnace.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0049] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A temperature measuring device in a furnace, characterized in that: include: A connecting rod, with the first contact plate and the second contact plate fixedly connected to both ends of the connecting rod respectively; A plurality of connecting rings, wherein the plurality of connecting rings are slidably connected to the connecting rod, and bolts are threadedly connected to the connecting rings, and a side wall of the bolts contacts an outer wall of the connecting rod; A crossbar, wherein the crossbar is fixedly connected to the connecting ring; A temperature sensor is fixedly connected to the cross bar.

2. A furnace temperature measuring device according to claim 1, characterized in that: The connecting rod includes a first connecting rod and a second connecting rod, the first contact plate is installed at one end of the first connecting rod, and the second contact plate is installed at one end of the second connecting rod; The first connecting rod is provided with a sliding groove that matches the second connecting rod, and one end of the second connecting rod away from the second contact plate is slidably connected in the sliding groove.

3. The furnace temperature measuring device according to claim 2, characterized in that: A clamp for locking the second connecting rod is installed at one end of the first connecting rod away from the first contact plate.

4. The furnace temperature measuring device according to claim 2, characterized in that: The first connecting rod is fixedly connected to a first convex strip, the second connecting rod is fixedly connected to a second convex strip, and the inner wall of the connecting ring matches the first convex strip and the second convex strip.

5. The furnace temperature measuring device according to claim 4, characterized in that: A first scale line is provided on the outer wall of the first connecting rod, and a second scale line is provided on the outer wall of the second connecting rod.

6. The furnace temperature measuring device according to claim 2, characterized in that: The connecting ring includes an inner ring and an outer ring, the inner ring and the outer ring are rotatably connected, the inner ring is located at the lower end of the outer ring and has a threaded hole, the bolt is threadedly connected to the threaded hole, and the other end contacts the outer wall of the connecting rod.

7. The furnace temperature measuring device according to claim 6, characterized in that: The upper end surface of the inner ring is fixedly connected with an elastic connecting piece that matches the outer ring, and the upper end surface of the outer ring is provided with a third scale line.

8. The furnace temperature measuring device according to claim 7, characterized in that: A starting groove matching the elastic connecting piece is provided on the side wall of the outer ring.

9. The furnace temperature measuring device according to claim 1, characterized in that: The crossbar includes a first rod body and a second rod body, wherein the first rod body and the second rod body are slidably connected, and a clamp for locking the second rod body is provided on the first rod body.

10. The furnace temperature measuring device according to claim 9, characterized in that: A fourth scale line is provided on the outer wall of the second rod.

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