Flue gas waste heat recovery device for high-temperature pipeline

Abstract

The utility model relates to the technical field of waste heat recovery, and discloses a flue gas waste heat recovery device for a high-temperature pipeline, which comprises a flue gas pipeline, a rectangular hole is arranged on the right side of the inner wall of the flue gas pipeline, a rectangular block is arranged in the rectangular hole, a mounting plate is arranged on the right side of the rectangular block, and one end of the mounting plate is attached to the right side of the flue gas pipeline. Five heat exchange pipes with one ends extending to the right side of the mounting plate are arranged on the left side of the rectangular block. According to the flue gas waste heat recovery device for the high-temperature pipeline, two limiting blocks are moved out of the interiors of two limiting grooves by screwing two second hand wheels, so that position limitation on two positioning blocks is relieved, then the two positioning blocks are moved out of the interiors of the two positioning grooves by screwing a first hand wheel, and the two positioning blocks are moved out of the interiors of the two positioning grooves by screwing a second hand wheel. When the heat exchange pipe is detached from the inside of the flue gas pipeline, the heat exchange pipe can be detached from the inside of the flue gas pipeline by pulling the mounting plate to the right, so that the heat exchange pipe can be cleaned conveniently.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, specifically a waste heat recovery device for flue gas in high-temperature pipelines. Background Technology

[0002] Hot water or steam generated in boilers can directly provide the heat energy needed for industrial production and people's lives. It can also be converted into mechanical energy through steam power devices, or further converted into electrical energy through generators. Boilers that provide hot water are called hot water boilers, mainly used for domestic purposes, with some applications in industrial production. Boilers that generate steam are called steam boilers, often simply referred to as boilers, and are mostly used in thermal power plants, ships, locomotives, and industrial and mining enterprises. The flue gas generated by boilers during operation contains high temperatures, and direct discharge would lead to a waste of heat energy. In order to recover and utilize the waste heat of flue gas, heat exchange tubes are installed in the flue gas pipeline to recover heat energy. However, in actual use, when the flue gas comes into contact with the heat exchange tubes, dust in the flue gas will gradually adhere to the heat exchange tubes. Moreover, the heat exchange tubes are usually fixedly installed inside the flue gas pipeline, making it inconvenient to disassemble the heat exchange tubes and thus inconvenient to clean them, which is detrimental to their use. Therefore, a high-temperature pipeline flue gas waste heat recovery device is proposed. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a high-temperature pipeline flue gas waste heat recovery device, which has advantages such as easy disassembly of heat exchange tubes. It solves the problem that in actual use, when flue gas comes into contact with heat exchange tubes, dust in the flue gas gradually adheres to the heat exchange tubes, and since the heat exchange tubes are usually fixedly installed inside the flue gas pipeline, it is inconvenient to disassemble the heat exchange tubes, making it difficult to clean them and thus hindering their use.

[0005] (II) Technical Solution

[0006] To achieve the aforementioned purpose of facilitating the disassembly of heat exchange tubes, this utility model provides the following technical solution: a flue gas waste heat recovery device for high-temperature pipelines, comprising a flue gas pipeline, a rectangular hole provided on the right side of the inner wall of the flue gas pipeline, a rectangular block provided inside the rectangular hole, an mounting plate provided on the right side of the rectangular block with one end attached to the right side of the flue gas pipeline, five heat exchange tubes provided on the left side of the rectangular block, each extending one end to the right side of the mounting plate, and mounting blocks provided at both the front and rear ends of the right side of the mounting plate with one end extending to its left side and fixedly connected to the right side of the flue gas pipeline, a frame provided on the right side of the mounting plate between two mounting blocks, the frame containing... The frame is provided with two fixing blocks symmetrically distributed front and back. The front fixing block has a first threaded rod extending to the rear of the rear fixing block. The two mounting blocks have positioning grooves on opposite sides. The front and rear sides of the frame are provided with positioning blocks, one end of which is threaded to the outside of the first threaded rod and the other end of which extends into the two positioning grooves respectively. The right side of the frame is provided with a drive assembly, one end of which extends into the drive assembly and is fixedly connected to the outside of the first threaded rod. The right side of the two positioning blocks is provided with a limiting groove located inside the frame. The front and rear ends of the right side of the frame are provided with limiting assemblies, one end of which extends into the two limiting grooves respectively.

[0007] Preferably, the drive assembly includes a mounting shaft, a mounting shaft extending into the right side of the frame is movably mounted thereon, a drive bevel gear is fixedly mounted on the left side of the mounting shaft, a driven bevel gear located between two fixed blocks and meshing with the drive bevel gear at one end is fixedly mounted on the outer side of the first threaded rod, and a first handwheel is fixedly mounted on the right side of the mounting shaft.

[0008] Preferably, the limiting component includes a housing, and housings are fixedly installed at both the front and rear ends of the right side of the frame. Sliders are movably installed inside the two housings. A limiting block with one end extending into the two limiting grooves is fixedly installed on the left side of each of the two sliders. A second threaded rod with one end extending into its interior and movably connected to the right side of each of the two housings is threadedly connected to the right side of each of the two housings. A second handwheel is fixedly installed on the right side of each of the two second threaded rods.

[0009] Preferably, both of the fixing blocks have a circular hole inside, and a first bearing is fixedly installed inside each of the two circular holes. The first threaded rod is rotatably connected to the fixing block through the first bearing.

[0010] Preferably, the outer side of the first threaded rod is provided with two threaded sections of equal length and opposite direction, and the opposite sides of the two positioning blocks are provided with threaded grooves that are adapted to the first threaded rod.

[0011] Preferably, each of the two housings has a threaded hole on its right side that is adapted to the two second threaded rods, and each of the two sliders has a second bearing fixedly installed on its right side. The second threaded rod is rotatably connected to the right side of the slider through the second bearing.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a waste heat recovery device for flue gas in high-temperature pipelines, which has the following beneficial effects:

[0014] This high-temperature pipeline flue gas waste heat recovery device works by turning two second handwheels to rotate two second threaded rods, which in turn moves two sliders and two limit blocks to the right. This causes the two limit blocks to move out of their respective limit slots, thus releasing the positional restriction on the two positioning blocks. Then, turning the first handwheel rotates the mounting shaft and drive bevel gear, which in turn drives the first threaded rod to rotate. This causes the two positioning blocks to move relative to each other, moving them out of their respective positioning slots. This releases the fixing between the mounting plate and the flue gas pipeline. At this point, the mounting plate can be pulled to the right to remove the heat exchanger tube from the inside of the flue gas pipeline, ultimately facilitating the disassembly and cleaning of the heat exchanger tube. Attached Figure Description

[0015] Figure 1 This is a front sectional view of the present invention;

[0016] Figure 2 This is a top sectional view of the present invention;

[0017] Figure 3 This utility model Figure 1 Enlarged view of point A in the middle;

[0018] Figure 4 This utility model Figure 2 Enlarged view of section B in the middle.

[0019] In the diagram: 1. Flue gas duct, 2. Rectangular hole, 3. Rectangular block, 4. Mounting plate, 5. Heat exchange tube, 6. Mounting block, 7. Frame, 8. Fixing block, 9. First threaded rod, 10. Positioning groove, 11. Positioning block, 12. Drive assembly, 121. Mounting shaft, 122. Drive bevel gear, 123. Driven bevel gear, 124. First handwheel, 13. Limiting groove, 14. Limiting assembly, 141. Housing, 142. Slider, 143. Limiting block, 144. Second threaded rod, 145. Second handwheel. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a high-temperature pipeline flue gas waste heat recovery device, including a flue gas pipeline 1, a rectangular hole 2 is opened on the right side of the inner wall of the flue gas pipeline 1, a rectangular block 3 is movably installed inside the rectangular hole 2, an mounting plate 4 is fixedly installed on the right side of the rectangular block 3 with one end attached to the right side of the flue gas pipeline 1, and five heat exchange tubes 5 are fixedly installed on the left side of the rectangular block 3, each extending to the right side of the mounting plate 4, and the five heat exchange tubes 5 are distributed at equal distances front to back.

[0022] Mounting blocks 6 are movably mounted at both the front and rear ends of the right side of mounting plate 4, with one end extending to its left side and fixedly connected to the right side of flue gas duct 1. First mounting holes adapted to mounting blocks 6 are provided at both the front and rear ends of the right side of mounting plate 4. A frame 7 is fixedly mounted on the right side of mounting plate 4, located between the two mounting blocks 6. Two fixing blocks 8 are fixedly mounted inside the frame 7, symmetrically distributed front and rear. A first threaded rod 9, extending to the rear side of the rear fixing block 8, is movably mounted on the front side of the front fixing block 8. Both fixing blocks 8 have round holes, and first bearings are fixedly mounted inside both round holes. The first threaded rod 9 is rotatably connected to the fixing block 8 via the first bearings. Positioning grooves 10 are provided on opposite sides of the two mounting blocks 6. Positioning blocks 11, with one end threadedly connected to the outside of the first threaded rod 9 and the other end extending into the two positioning grooves 10, are movably mounted on both the front and rear sides of the frame 7. The outside of the first threaded rod 9 has two threads of equal length and opposite direction. Threaded grooves adapted to the first threaded rod 9 are provided on opposite sides of the two positioning blocks 11.

[0023] A drive assembly 12 is movably mounted on the right side of the frame 7, with one end extending into its interior and fixedly connected to the outside of the first threaded rod 9. The drive assembly 12 includes a mounting shaft 121. A mounting shaft 121 with one end extending into its interior is movably mounted on the right side of the frame 7. A second mounting hole adapted to the mounting shaft 121 is opened on the right side of the frame 7. A drive bevel gear 122 is fixedly mounted on the left side of the mounting shaft 121. A driven bevel gear 123 located between two fixed blocks 8 and with one end meshing with the drive bevel gear 122 is fixedly mounted on the outside of the first threaded rod 9. A first handwheel 124 is fixedly mounted on the right side of the mounting shaft 121.

[0024] Each of the two positioning blocks 11 has a limiting groove 13 located inside the frame 7 on its right side. A limiting component 14, extending into the two limiting grooves 13, is fixedly installed at both the front and rear ends of the right side of the frame 7. Each limiting component 14 includes a housing 141. Housings 141 are fixedly installed at both the front and rear ends of the right side of the frame 7. A slider 142 is movably installed inside each of the two housings 141. A limiting block 143, extending into the two limiting grooves 13, is fixedly installed on the left side of each of the two sliders 142. A first limiting block 143, adapted to the limiting block 143, is provided on the left side of the inner wall of each of the two housings 141. The frame 7 has a second through hole at both the front and rear ends on the right side, which is adapted to the limiting block 143. The right side of each of the two housings 141 is threaded with a second threaded rod 144, one end of which extends into the interior and is movably connected to the right side of each of the two sliders 142. The right side of each of the two housings 141 has a threaded hole adapted to each of the two second threaded rods 144. The right side of each of the two sliders 142 is fixedly installed with a second bearing. The second threaded rod 144 is rotatably connected to the right side of the slider 142 through the second bearing. The right side of each of the two second threaded rods 144 is fixedly installed with a second handwheel 145.

[0025] In use, a heat transfer medium such as water can be injected into the heat exchange tube 5 via a pump. When the high-temperature flue gas comes into contact with the heat exchange tube 5, it heats the tube and the water inside, thus recovering and utilizing the heat energy in the flue gas by producing hot water. When it is necessary to clean dust and other impurities adhering to the outside of the heat exchange tube 5, the two second handwheels 145 can be turned to rotate the two second threaded rods 144, thereby moving the two sliders 142 and the two limiting blocks 143 to the right. This causes the two limiting blocks 143 to move out of the two limiting grooves 13, thus releasing the position restriction on the two positioning blocks 11. Then... The mounting shaft 121 and the drive bevel gear 122 can be rotated by turning the first handwheel 124, which in turn drives the first threaded rod 9 to rotate through the driven bevel gear 123. This causes the two positioning blocks 11 to move relative to each other, so that the two positioning blocks 11 can be moved out of the two positioning slots 10 respectively, thereby releasing the fixing between the mounting plate 4 and the flue gas pipe 1. At this time, the mounting plate 4 can be pulled to the right to remove the heat exchange tube 5 from the inside of the flue gas pipe 1, which facilitates the cleaning of the heat exchange tube 5 and avoids the heat conduction effect of the heat exchange tube 5 due to the large amount of dust adhering to it, thus ensuring the normal use of the heat exchange tube 5.

[0026] In summary, this high-temperature pipeline flue gas waste heat recovery device rotates two second threaded rods 144 by turning two second handwheels 145, thereby moving two sliders 142 and two limiting blocks 143 to the right. This causes the two limiting blocks 143 to move out of the two limiting grooves 13, thus releasing the position restriction on the two positioning blocks 11. Then, turning the first handwheel 124 rotates the mounting shaft 121 and the drive bevel gear 122, which in turn drives the first threaded rod 9 to rotate via the driven bevel gear 123. This causes the two positioning blocks 11 to move relative to each other, allowing the two positioning blocks 11 to move to the right. Remove the mounting plate 4 from the inside of the two positioning slots 10, thereby releasing the fixation between the mounting plate 4 and the flue gas duct 1. At this time, the mounting plate 4 can be pulled to the right to remove the heat exchange tube 5 from the inside of the flue gas duct 1. This achieves the purpose of facilitating the disassembly of the heat exchange tube 5, which in turn facilitates the cleaning of the heat exchange tube 5. This solves the problem that in actual use, when the flue gas comes into contact with the heat exchange tube, dust in the flue gas will gradually adhere to the heat exchange tube, and the heat exchange tube is usually fixedly installed inside the flue gas duct, making it inconvenient to disassemble the heat exchange tube, thus making it inconvenient to clean the heat exchange tube and thus hindering its use.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature pipeline flue gas waste heat recovery device, comprising a flue gas pipeline (1), wherein a rectangular hole (2) is provided on the right side of the inner wall of the flue gas pipeline (1), a rectangular block (3) is provided inside the rectangular hole (2), an mounting plate (4) is provided on the right side of the rectangular block (3) with one end attached to the right side of the flue gas pipeline (1), and five heat exchange tubes (5) are provided on the left side of the rectangular block (3), each extending to the right side of the mounting plate (4) at one end, characterized in that: The mounting plate (4) has a mounting block (6) at both the front and rear ends on the right side, with one end extending to its left side and fixedly connected to the right side of the flue gas duct (1). A frame (7) is located between the two mounting blocks (6) on the right side of the mounting plate (4). The frame (7) has two fixing blocks (8) arranged symmetrically in front and behind. The front fixing block (8) has a first threaded rod (9) extending to the rear of the rear fixing block (8) on its front side. The two mounting blocks (6) have positioning grooves (10) on their opposite sides. (7) A positioning block (11) is provided on both the front and back sides of the interior, with one end threaded to the outside of the first threaded rod (9) and the other end extending into the two positioning grooves (10). A drive assembly (12) is provided on the right side of the frame (7), with one end extending into its interior and fixedly connected to the outside of the first threaded rod (9). A limiting groove (13) located inside the frame (7) is provided on the right side of the two positioning blocks (11). A limiting assembly (14) is provided on both the front and back ends of the right side of the frame (7), with one end extending into the two limiting grooves (13).

2. The high-temperature pipeline flue gas waste heat recovery device according to claim 1, characterized in that: The drive assembly (12) includes a mounting shaft (121). The mounting shaft (121) is movably mounted on the right side of the frame (7), with one end extending into it. A drive bevel gear (122) is fixedly mounted on the left side of the mounting shaft (121). A driven bevel gear (123) is fixedly mounted on the outer side of the first threaded rod (9), located between two fixed blocks (8) and with one end meshing with the drive bevel gear (122). A first handwheel (124) is fixedly mounted on the right side of the mounting shaft (121).

3. The high-temperature pipeline flue gas waste heat recovery device according to claim 1, characterized in that: The limiting component (14) includes a housing (141). The housing (141) is fixedly installed at both the front and rear ends of the right side of the frame (7). The two housings (141) are movably installed with sliders (142). The left side of the two sliders (142) is fixedly installed with a limiting block (143) with one end extending into the two limiting grooves (13). The right side of the two housings (141) is threaded with a second threaded rod (144) with one end extending into its interior and movably connected to the right side of the two sliders (142). The right side of the two second threaded rods (144) is fixedly installed with a second handwheel (145).

4. The high-temperature pipeline flue gas waste heat recovery device according to claim 1, characterized in that: Both of the fixed blocks (8) have round holes inside, and the first bearing is fixedly installed inside the two round holes. The first threaded rod (9) is rotatably connected to the fixed block (8) through the first bearing.

5. A high-temperature pipeline flue gas waste heat recovery device according to claim 1, characterized in that: The outer side of the first threaded rod (9) is provided with two threads of equal length and opposite direction. The opposite sides of the two positioning blocks (11) are provided with threaded grooves that are compatible with the first threaded rod (9).

6. A high-temperature pipeline flue gas waste heat recovery device according to claim 3, characterized in that: Both housings (141) have threaded holes on their right sides that are adapted to the two second threaded rods (144), and the two sliders (142) are fixedly mounted with second bearings on their right sides. The second threaded rods (144) are rotatably connected to the right side of the sliders (142) through the second bearings.

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