Fluidized bed temperature measuring device

Abstract

This utility model relates to the field of fluidized bed temperature measurement technology and discloses a fluidized bed temperature measurement device, including: a fluidized bed gasifier and a through groove. The outer wall of the fluidized bed gasifier has a through groove, and the inner wall of the fluidized bed gasifier is fixedly connected to a fixed cover. The fixed cover and the through groove are interconnected, and the inside of the fixed cover is provided with an inner sleeve. This fluidized bed temperature measurement device, through the coordinated operation of its components, allows for easy replacement of the second measuring point if it is damaged. The operator rotates the second bolt counterclockwise to separate it from the circular plate, and then pulls the circular plate away from the fluidized bed gasifier. This allows the second armored thermocouple and the second measuring point to be removed and replaced from inside the fixed cover. At this time, the first measuring point remains inside the fixed cover and is in operation. This design allows for online replacement of a single measuring point without disassembly, enabling the other measuring point to continue operating normally and avoiding unnecessary economic losses.

Description

Technical Field

[0001] This utility model relates to the field of fluidized bed temperature measurement technology, specifically to a fluidized bed temperature measurement device. Background Technology

[0002] Temperature is a crucial parameter during the operation of a fluidized bed gasifier. Accurate temperature measurement not only reflects the reaction state within the gasifier in real time, ensuring that the gasification reaction proceeds under optimal temperature conditions, thereby improving gasification efficiency and product quality, but also promptly detects abnormalities such as localized overheating, preventing equipment damage and production accidents, and ensuring the safe and stable operation of the gasifier. Therefore, developing reliable and accurate temperature measurement devices for fluidized bed gasifiers has always been a research hotspot and a key technological challenge in this field.

[0003] Currently, the utility model patent with authorization announcement number CN212513371U discloses a temperature measuring device for a fluidized bed gasifier, including an end flange, an outer sleeve, an inner sleeve, and an armored thermocouple; one end of the inner sleeve is a closed end. Although this device can achieve long-term operation of the fluidized bed gasifier temperature measuring device, reduce the workload of maintenance, and facilitate long-term monitoring of the fluidized bed gasifier, it still has certain drawbacks in actual use.

[0004] For example, if one of the measuring points is damaged, and another undamaged measuring point is operating normally, it is impossible to replace the damaged measuring point online. This means that when the damaged measuring point is replaced later, the operation of the fluidized bed gasifier must be stopped for maintenance, and the shutdown of the fluidized bed gasifier will cause economic losses.

[0005] On the other hand, the gasifier is located in a high-temperature environment, and the heat generated is likely to be conducted to the outside of the fluidized bed through the outer jacket with excellent thermal conductivity. This not only reduces energy utilization efficiency, but the excessively high outer surface temperature may also have an adverse impact on the surrounding environment. Utility Model Content

[0006] The purpose of this invention is to provide a fluidized bed temperature measuring device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a fluidized bed temperature measuring device, comprising: a fluidized bed gasifier and a through groove, wherein the outer wall of the fluidized bed gasifier is provided with the through groove, and a fixed cover is fixedly connected to the inner wall of the fluidized bed gasifier, the fixed cover and the through groove being interconnected, an inner sleeve is provided inside the fixed cover, and a pair of first armored thermocouples are provided on the outer side of the inner sleeve, the first armored thermocouples penetrating a portion of the inner sleeve, a first measuring point is provided on the first armored thermocouples, the first measuring point being located inside the inner sleeve, and a second armored thermocouple is provided inside the inner sleeve. The thermocouple has a second measuring point on its second armored thermocouple. A threaded head is fixed to the end of the second armored thermocouple. The threaded head is threadedly connected to the fixed cover through a threaded groove. A ring is fixed to the end of the inner sleeve away from the fixed cover. A short cylinder is provided between the ring and the fluidized bed gasifier. A pair of first bolts are inserted into the surface of the ring away from the fluidized bed gasifier. The first bolts pass through the ring and the short cylinder in sequence and are threadedly connected to the fluidized bed gasifier. The ring is fixedly connected to the first armored thermocouple. A circular plate is attached to the inner wall of the ring. The circular plate is fixedly connected to the second armored thermocouple.

[0008] Preferably, the outer wall of the ring has a pair of through holes, and a pair of second bolts are inserted into the outer wall of the ring. The second bolts pass through the through holes and are threadedly connected to the circular plate.

[0009] Preferably, the exposed portion of the outer wall of the circular plate is textured with raised and recessed patterns.

[0010] Preferably, a first heat insulation layer is fixed to the surface of the circular plate and the ring facing the fixed cover cylinder, a first heat-reflecting layer is fixed to the surface of the first heat insulation layer away from the circular plate and the ring, a second heat insulation layer is fixed to the inner wall of the short cylinder, and a second heat-reflecting layer is fixed to the inner wall of the second heat insulation layer.

[0011] Preferably, the first heat-reflecting layer is in close contact with the short cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This fluidized bed temperature measuring device has the following advantages over traditional technology:

[0013] Through the coordinated operation of various components, when the first measuring point is damaged and needs replacement, the operator rotates the first bolt counterclockwise to separate it from the fluidized bed gasifier. Then, the circular ring is pulled away from the fluidized bed gasifier, allowing the first armored thermocouple and the first measuring point to be removed from the fixed casing for replacement. At this time, the second measuring point remains inside the fixed casing and operates normally. If the second measuring point is damaged and needs replacement, the operator rotates the second bolt counterclockwise to separate it from the circular plate. Then, the circular plate is pulled away from the fluidized bed gasifier, allowing the second armored thermocouple and the second measuring point to be removed from the fixed casing for replacement. At this time, the first measuring point is still located inside the fixed casing and is in operation. This achieves the goal of replacing a damaged measuring point while the other measuring point can continue to operate normally without disassembly, enabling online replacement without downtime and avoiding unnecessary economic losses.

[0014] Through the coordinated operation of various components, during the installation and operation of the fluidized bed gasifier, the heat inside the fixed shroud and inner sleeve can be reflected by the first and second heat-reflecting layers. At the same time, the first and second heat-insulating layers have excellent heat insulation performance, which can significantly reduce the heat transfer to the short cylinder, ring and circular plate that are in contact with the outside, thereby significantly reducing the heat conduction rate to the outside through them. This is conducive to the full utilization of energy and is less likely to have an adverse impact on the environment and production around the fluidized bed gasifier. Attached Figure Description

[0015] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent when taken in conjunction with the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0019] Figure 4 for Figure 3 A schematic diagram of the three-dimensional structure of the middle ring and the circular plate.

[0020] In the diagram: 1. Fluidized bed gasifier, 2. Through groove, 3. Fixed cover, 4. Inner sleeve, 5. First armored thermocouple, 6. First measuring point, 7. Second armored thermocouple, 8. Second measuring point, 9. Threaded head, 10. Threaded groove, 11. Ring, 12. Short cylinder, 13. First bolt, 14. Circular plate, 15. Second bolt, 16. Through hole, 17. First insulation layer, 18. First heat-reflecting layer, 19. Second insulation layer, 20. Second heat-reflecting layer, 21. Raised and concave texture. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-4 This utility model provides a technical solution: a fluidized bed temperature measuring device, comprising: a fluidized bed gasifier 1 and a through groove 2. The through groove 2 is formed on the outer wall of the fluidized bed gasifier 1. A fixed cover 3 is fixedly connected to the inner wall of the fluidized bed gasifier 1. The fixed cover 3 and the through groove 2 are interconnected. An inner sleeve 4 is provided inside the fixed cover 3. A pair of first armored thermocouples 5 are provided on the outer side of the inner sleeve 4. The first armored thermocouples 5 penetrate a part of the inner sleeve 4. A first measuring point 6 is provided on the first armored thermocouples 5. The first measuring point 6 is located inside the inner sleeve 4. A second armored thermocouple 7 is provided inside the inner sleeve 4. The upper part is provided with a second measuring point 8. The end of the second armored thermocouple 7 is fixedly connected with a threaded head 9. The threaded head 9 is threadedly connected to the fixed cover 3 through the threaded groove 10. The end of the inner sleeve 4 away from the fixed cover 3 is fixedly connected with a ring 11. A short cylinder 12 is provided between the ring 11 and the fluidized bed gasifier 1. A pair of first bolts 13 are inserted into the surface of the ring 11 away from the fluidized bed gasifier 1. The first bolts 13 pass through the ring 11 and the short cylinder 12 in sequence and are threadedly connected to the fluidized bed gasifier 1. The ring 11 is fixedly connected to the first armored thermocouple 5. A circular plate 14 is attached to the inner wall of the ring 11. The circular plate 14 is fixedly connected to the second armored thermocouple 7.

[0023] In the specific implementation process, it is worth noting that the opening position of the through slot 2 can ensure that the inner sleeve 4 can be smoothly inserted without affecting the normal operation of the gasifier. The fixed cover 3 is made of high-strength, high-temperature resistant materials with excellent thermal conductivity, including but not limited to cobalt-based alloys and silicon carbide, which can withstand the high-temperature environment inside the gasifier. A certain distance is left between the inner sleeve 4 and the fixed cover 3 to facilitate heat transfer and measurement, as well as the installation of the first armored thermocouple 5. Both the first armored thermocouple 5 and the second armored thermocouple 7 are high-precision and high-stability thermocouples, which can accurately measure the temperature inside the furnace. The positions of the first measuring point 6 and the second measuring point 8 are set in the area inside the gasifier where the temperature change is more sensitive (depending on the opening position of the through slot 2). The short cylinder 12 plays a connecting and transition role.

[0024] Furthermore, a pair of through holes 16 are provided on the outer wall of the ring 11, and a pair of second bolts 15 are inserted into the outer wall of the ring 11. The second bolts 15 pass through the through holes 16 and are threadedly connected to the circular plate 14.

[0025] In the specific implementation process, it is worth noting that the diameter of the through hole 16 matches the diameter of the second bolt 15 to ensure that the second bolt 15 can pass through smoothly and provide sufficient fixing force after tightening. During installation, the second bolt 15 is first inserted into the through hole 16, and then rotated and screwed into the threaded hole on the circular plate 14. By controlling the tightening torque, the connection between the circular plate 14 and the circular ring 11 is ensured to be firm, thereby improving the stability of the circular plate 14, the second armored thermocouple 7, and the second measuring point 8 after installation.

[0026] Furthermore, the exposed portion of the outer wall of the circular plate 14 is machined with raised and recessed textures 21.

[0027] In the specific implementation process, it is worth noting that the raised and recessed texture 21 can increase the friction between the operator's hand and the circular plate 14, making it easier for the operator to grip and apply force when installing and disassembling the circular plate 14.

[0028] Furthermore, a first heat insulation layer 17 is fixed to the surface of the circular plate 14 and the circular ring 11 that is close to the fixed cover cylinder 3, a first heat-reflecting layer 18 is fixed to the surface of the first heat insulation layer 17 that is away from the circular plate 14 and the circular ring 11, a second heat insulation layer 19 is fixed to the inner wall of the short cylinder 12, and a second heat-reflecting layer 20 is fixed to the inner wall of the second heat insulation layer 19.

[0029] In the specific implementation process, it is worth noting that the first heat insulation layer 17 and the second heat insulation layer 19 are both made of materials with excellent heat insulation performance, such as ceramic fiber and other high-temperature resistant heat insulation structures, which can effectively prevent heat transfer and reduce heat loss. The first heat reflection layer 18 and the second heat reflection layer 20 are made of materials with high reflectivity, such as aluminum foil, which can reflect the heat transferred from the furnace back to a certain extent, further reducing the heat conduction to the outside. The thickness of these heat insulation layers and heat reflection layers is determined according to the actual heat insulation requirements and installation space.

[0030] Furthermore, the first heat-reflecting layer 18 is pressed against the short cylinder 12.

[0031] In the specific implementation process, it is worth noting that the first heat-reflecting layer 18 and the short cylinder 12 are installed in a tight fit. During the installation process, a certain pressure is applied to ensure that there are no gaps between the first heat-reflecting layer 18 and the short cylinder 12, so as to ensure that the heat reflection effect reaches the best.

[0032] Working principle:

[0033] Temperature sensing component installation:

[0034] When the operator carries out the installation work, first insert the inner sleeve 4 into the fixed cover 3 through the through groove 2 opened on the outer wall of the fluidized bed gasifier 1, so that the two ends of the short cylinder 12 are tightly fitted to the fluidized bed gasifier 1 and the first anti-heat layer 18 respectively. Then, use the first bolt 13 to pass through the ring 11 and the short cylinder 12 in sequence, and make a threaded connection with the fluidized bed gasifier 1, thereby completing the installation of the first armored thermocouple 5 and the first measuring point 6. Then, install the second armored thermocouple 7 and the second measuring point 8. Insert the circular plate 14 into the ring 11 by rotating it clockwise, so that the threaded head 9 of the end of the second armored thermocouple 7 away from the circular plate 14 is threadedly connected to the threaded groove 10, so that the threaded head 9 is firmly connected to the fixed cover 3. Then, use the second bolt 15 to pass through the through hole 16 through the ring 11 and make a threaded connection with the circular plate 14, thereby fixing the circular plate 14 and completing the installation of the second armored thermocouple 7 and the second measuring point 8.

[0035] Furnace heat monitoring:

[0036] After the above installation work is completed, during the operation of the fluidized bed gasifier 1, the heat generated inside the furnace will pass through the fixed cover 3 and the inner sleeve 4. At this time, the second measuring point 8 and the first measuring point 6 will monitor this heat in real time, thereby realizing the measurement of the internal temperature of the fluidized bed gasifier 1. This monitoring method can promptly feed back the internal temperature information of the furnace, providing key data support for the stable operation of the fluidized bed gasifier 1.

[0037] Measurement points can be changed flexibly:

[0038] When the first measuring point 6 is damaged and needs to be replaced, the operator rotates the first bolt 13 counterclockwise to separate it from the fluidized bed gasifier 1, and then pulls the ring 11 away from the fluidized bed gasifier 1. This allows the first armored thermocouple 5 and the first measuring point 6 to be removed from the fixed cover 3 for replacement. During this process, the second measuring point 8 remains inside the fixed cover 3 and operates normally. If the second measuring point 8 is damaged and needs to be replaced, the operator rotates the second bolt 15 counterclockwise to separate it from the circular plate 14, and then pulls the circular plate 14 away from the fluidized bed gasifier 1. This allows the second armored thermocouple 7 and the second measuring point 8 to be removed from the fixed cover 3 for replacement. At this time, the first measuring point 6 is still inside the fixed cover 3 and in operation. This achieves the goal that when a single measuring point is damaged and needs to be replaced, the other measuring point can continue to operate normally without disassembly. This allows for online replacement without downtime, avoiding unnecessary economic losses.

[0039] Reduce heat diffusion:

[0040] The heat inside the fixed shroud 3 and inner sleeve 4 can be reflected by the first heat-reflecting layer 18 and the second heat-reflecting layer 20. The first heat insulation layer 17 and the second heat insulation layer 19 have excellent heat insulation performance, which can significantly reduce the heat transfer to the short cylinder 12, the ring 11 and the circular plate 14 that are in contact with the outside, thereby significantly reducing the heat conduction rate to the outside through them, which is conducive to the full utilization of energy and is less likely to have an adverse impact on the environment and production around the fluidized bed gasifier 1.

[0041] 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 fluidized bed temperature measurement device, comprising: A fluidized bed gasifier (1) and a through-slot (2) are provided. The outer wall of the fluidized bed gasifier (1) is provided with the through-slot (2). The fluidized bed gasifier (1) is characterized in that: a fixed cover (3) is fixedly connected to the inner wall of the fluidized bed gasifier (1). The fixed cover (3) and the through-slot (2) are interconnected. An inner sleeve (4) is provided inside the fixed cover (3). A pair of first armored thermocouples (5) are provided on the outer side of the inner sleeve (4). The first armored thermocouples (5) penetrate a part of the inner sleeve (4). A first measuring point (6) is provided on the first armored thermocouples (5). The first measuring point (6) is located inside the inner sleeve (4). A second armored thermocouple (7) is provided inside the inner sleeve (4). A second measuring point (8) is provided on the second armored thermocouple (7). The end of the second armored thermocouple (7) is fixed with a threaded head (9), which is threaded to the fixed cover (3) through a threaded groove (10). The end of the inner sleeve (4) away from the fixed cover (3) is fixed with a ring (11). A short cylinder (12) is provided between the ring (11) and the fluidized bed gasifier (1). A pair of first bolts (13) are inserted into the surface of the ring (11) away from the fluidized bed gasifier (1). The first bolts (13) pass through the ring (11) and the short cylinder (12) in sequence and are threaded to the fluidized bed gasifier (1). The ring (11) is fixedly connected to the first armored thermocouple (5). A circular plate (14) is attached to the inner wall of the ring (11). The circular plate (14) is fixedly connected to the second armored thermocouple (7).

2. The fluidized bed temperature measuring device according to claim 1, characterized in that: The outer wall of the ring (11) has a pair of through holes (16), and a pair of second bolts (15) are inserted into the outer wall of the ring (11). The second bolts (15) pass through the through holes (16) and are threadedly connected to the circular plate (14).

3. The fluidized bed temperature measuring device according to claim 1, characterized in that: The exposed portion of the outer wall of the circular plate (14) is processed with raised and recessed textures (21).

4. The fluidized bed temperature measuring device according to claim 1, characterized in that: The circular plate (14) and the ring (11) are fixed to the surface of the fixed cover (3) with a first heat insulation layer (17), and the surface of the first heat insulation layer (17) away from the circular plate (14) and the ring (11) is fixed to a first heat-reflecting layer (18). The inner wall of the short cylinder (12) is fixed to a second heat insulation layer (19), and the inner wall of the second heat insulation layer (19) is fixed to a second heat-reflecting layer (20).

5. A fluidized bed temperature measuring device according to claim 4, characterized in that: The first heat-reflecting layer (18) abuts against the short cylinder (12).

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