Reinforced metal compensator for circulating fluidized bed boilers
By introducing rack plates, connecting gears, and blade groups into the metal compensator for circulating fluidized bed boilers, and combining the structure of the gas chamber and sealing plate, automatic cooling of the metal compensator is achieved, solving the problem of compensator rupture under high temperature environments and improving the reliability and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-07
AI Technical Summary
Existing metal compensators cannot automatically cool down in circulating fluidized bed boilers, making them prone to cracking under high-temperature conditions.
An enhanced metal compensator for circulating fluidized bed boilers was designed. By setting rack plates, connecting gears and blade groups on the flange, automatic cooling is achieved by utilizing gas flow, and uniform cooling of the expansion joint is achieved through the cooperation of the gas chamber and sealing plate.
Automatic cooling of the metal compensator was achieved, preventing cracking due to excessive temperature and improving the service life and safety of the equipment.
Smart Images
Figure CN224470214U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal compensator technology, and more specifically to a reinforced metal compensator for a circulating fluidized bed boiler. Background Technology
[0002] Circulating fluidized bed boiler technology occupies an important position in the global energy structure due to its excellent fuel adaptability, superior environmental performance and good load regulation capability. Large components such as the boiler body, high-temperature cyclone separator, return feeder, and external heat exchanger will generate significant and complex three-dimensional thermal displacements during start-up, shutdown and variable load operation due to uneven heating and huge temperature gradients.
[0003] If these displacements are not effectively absorbed and compensated, huge thermal stress will be generated at the rigid connection of pipes and equipment interfaces. Therefore, metal compensators are used to deal with this. Metal compensators, also known as expansion joints, are the core flexible components that absorb thermal displacement, release thermal stress, and protect the connection system. They are indispensable in circulating fluidized bed boilers.
[0004] When modern metal compensators are in use, they need to transport high-temperature gas generated by the boiler. Therefore, the temperature of the metal compensator will rise rapidly during use. If the metal compensator cannot reduce the temperature in time, it is easy to crack. Modern metal compensators cannot automatically cool down. Utility Model Content
[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a reinforced metal compensator for circulating fluidized bed boilers to solve the problems existing in the background art.
[0006] This utility model provides the following technical solution: a reinforced metal compensator for a circulating fluidized bed boiler, comprising an expansion joint, flanges fixedly connected to both ends of the expansion joint, connecting lugs fixedly connected to the sides of the flanges, a limit rod movably connected inside the connecting lugs, a first heat dissipation mechanism fixedly connected to the sides of the two flanges close to each other, and a second heat dissipation mechanism fixedly connected to the sides of the two flanges close to each other; the first heat dissipation mechanism includes a rack plate fixedly connected to the flanges, a connecting gear meshing on the side of the rack plate, a connecting shaft fixedly connected to the bottom end of the connecting gear, a synchronizing gear fixedly connected to the bottom end of the connecting shaft, a transmission gear meshing on the side of the synchronizing gear, an output gear meshing on the side of the transmission gear away from the connecting shaft, a blade shaft fixedly connected to the bottom end of the output gear, and a blade assembly fixedly connected to the bottom end of the blade shaft.
[0007] Furthermore, there are four first heat dissipation mechanisms, which are distributed at equal angles between the flanges. There are two second heat dissipation mechanisms, which are located on both sides of the expansion joint.
[0008] Furthermore, a support plate is movably connected to the side of the connecting shaft, the side of the support plate is fixedly connected to the side of the flange, and the bottom ends of the transmission gear and the output gear are movably connected to the bottom end of the support plate.
[0009] Furthermore, a protective ring is provided on the side of the blade assembly, the blade assembly is located inside the protective ring, and a support rod is fixedly connected to the side of the protective ring, the side of the support rod being fixedly connected to the side of the flange.
[0010] Furthermore, the second heat dissipation mechanism includes a gas chamber that can contain gas, with limit frames fixedly connected to both sides of the gas chamber, and sealing plates movably connected to both ends inside the gas chamber, with connecting rods fixedly connected to the mutually distant sides of the sealing plates.
[0011] Furthermore, the sides of the connecting rod away from the gas chamber are fixedly connected to the side of the flange, and a gas hole is provided in the middle of the gas chamber near the side of the expansion joint.
[0012] The technical effects and advantages of this utility model are as follows:
[0013] 1. This utility model is equipped with a rack plate, a connecting gear, and a blade assembly. When the expansion joint contracts, the rack plate is moved by the flange. When the rack plate moves, it drives the connecting gear to rotate. When the connecting gear rotates, it drives the output gear to rotate after being transmitted through the synchronous gear and the transmission gear. When the output gear rotates, it drives the blade assembly to rotate through the blade shaft. When the blade assembly rotates, it drives the blade assembly to rotate. When the blade assembly rotates, it blows or draws air into the expansion joint, which automatically achieves a cooling effect.
[0014] 2. This utility model has a gas chamber, a sealing plate, a connecting rod, and a gas hole. When the expansion joint expands or extends, the flanges on both sides move closer or further apart. When the flanges on both sides move closer together, they drive the internal connecting rod to move inward. When the connecting rod moves, it drives the sealing plate to move. When the sealing plate moves, it blows the gas in the gas chamber from the base of the connecting rod to the side of the expansion joint, further improving the cooling effect. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the overall structure of the first heat dissipation mechanism of this utility model.
[0017] Figure 3 This is an exploded structural diagram of the first heat dissipation mechanism of this utility model.
[0018] Figure 4 This is a schematic diagram of the overall structure of the second heat dissipation mechanism of this utility model.
[0019] Figure 5 This is a schematic diagram of the internal structure of the second heat dissipation mechanism of this utility model.
[0020] The attached figures are labeled as follows: 1. Expansion joint; 2. Flange; 3. Connecting lug; 4. Limiting rod; 5. First heat dissipation mechanism; 501. Rack plate; 502. Connecting gear; 503. Connecting shaft; 504. Synchronizing gear; 505. Support plate; 506. Transmission gear; 507. Output gear; 508. Blade shaft; 509. Blade assembly; 510. Protective ring; 511. Support rod; 6. Second heat dissipation mechanism; 601. Gas chamber; 602. Limiting frame; 603. Sealing plate; 604. Connecting rod; 605. Gas hole. Detailed Implementation
[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] Reference Figure 1 This utility model provides a reinforced metal compensator for a circulating fluidized bed boiler, including an expansion joint 1. Flanges 2 are fixedly connected to both ends of the expansion joint 1. Connecting lugs 3 are fixedly connected to the sides of the flanges 2. Limiting rods 4 are movably connected inside the connecting lugs 3. First heat dissipation mechanisms 5 are fixedly connected to the sides of the two flanges 2 that are close to each other, and second heat dissipation mechanisms 6 are fixedly connected to the sides of the two flanges 2 that are close to each other. There are four first heat dissipation mechanisms 5, which are distributed at equal angles between the flanges 2. There are two second heat dissipation mechanisms 6. The two flanges 2 are located on both sides of the expansion joint 1.
[0023] In this embodiment, there are four first heat dissipation mechanisms 5, which are distributed at equal angles on the four sides of the expansion joint 1, so that the gas blown out by the first heat dissipation mechanism 5 during operation can be blown more evenly to the sides of the expansion joint 1, thereby improving the cooling effect. Two second heat dissipation mechanisms 6 are distributed on both sides of the expansion joint 1 to further improve the cooling effect.
[0024] Reference Figure 2 and Figure 3The first heat dissipation mechanism 5 includes a rack plate 501 fixedly connected to the flange 2. A connecting gear 502 meshes with the side of the rack plate 501. A connecting shaft 503 is fixedly connected to the bottom end of the connecting gear 502. A synchronizing gear 504 is fixedly connected to the bottom end of the connecting shaft 503. A transmission gear 506 meshes with the side of the synchronizing gear 504. An output gear 507 meshes with the side of the transmission gear 506 away from the connecting shaft 503. A blade shaft 508 is fixedly connected to the bottom end of the output gear 507. The bottom end of the 8 is fixedly connected to the blade assembly 509. The side of the connecting shaft 503 is movably connected to the support plate 505. The side of the support plate 505 is fixedly connected to the side of the flange 2. The bottom ends of the transmission gear 506 and the output gear 507 are movably connected to the bottom end of the support plate 505. The side of the blade assembly 509 is provided with a protective ring 510. The blade assembly 509 is located inside the protective ring 510. The side of the protective ring 510 is fixedly connected to the support rod 511. The side of the support rod 511 is fixedly connected to the side of the flange 2.
[0025] In this embodiment, the rack plate 501 is fixed to the flange 2, and the support plate 505 is fixed to the flange 2 on the other side. The support plate 505 supports the connecting shaft 503, the transmission gear 506, and the output gear 507. Therefore, when the flanges 2 approach each other, the rack plate 501 and the support plate 505 move closer to each other, thereby causing the connecting gear 502 and the rack plate 501 to move relative to each other. At this time, the connecting gear 502 will rotate, thereby causing the blade assembly 509 to rotate, which has the effect of heat dissipation. The side of the blade assembly 509 is provided with a protective ring 510, which can protect the blade assembly 509 and prevent damage to the surrounding area.
[0026] Reference Figure 4 and Figure 5 The second heat dissipation mechanism 6 includes a gas chamber 601 that can contain gas. Limiting frames 602 are fixedly connected to both sides of the gas chamber 601. Sealing plates 603 are movably connected to both ends inside the gas chamber 601. Connecting rods 604 are fixedly connected to the sides of the sealing plates 603 that are far apart from each other. The sides of the connecting rods 604 that are far away from the gas chamber 601 are fixedly connected to the sides of the flange 2. A gas hole 605 is opened in the middle of the side of the gas chamber 601 near the expansion joint 1.
[0027] In this embodiment, the two connecting rods 604 move inward within the gas chamber 601. When the connecting rods 604 move, they drive the sealing plate 603 to move. When the sealing plate 603 moves, the gas in the gas chamber 601 is blown from the gas hole 605 to the side of the expansion joint 1, thereby improving the heat dissipation effect. The limiting frame 602 can prevent the sealing plate 603 from falling out of the gas chamber 601.
[0028] The working principle of this utility model is as follows: During use, the hot air generated by the filter flows through the expansion joint 1. At this time, the expansion joint 1 will contract and extend. When the expansion joint 1 contracts and extends, it drives the flanges 2 to move closer or further apart. When the flanges 2 move closer together, one side of the flange 2 drives the rack plate 501 to move, and the other side of the flange 2 drives the support plate 505 to move. The support plate 505 drives the connecting shaft 503 to move inward. At this time, the rack plate 501 meshes with the connecting gear 502. When the two move relative to each other, the connecting gear 502 rotates. When the connecting gear 502 rotates, it passes through 503. The synchronous gear 504 is driven to rotate. When the synchronous gear 504 rotates, it drives the blade shaft 508 to rotate through the transmission gear 506 and the output gear 507. When the blade shaft 508 rotates, it drives the blade assembly 509 to rotate. When the blade assembly 509 rotates, it generates gas that blows towards the expansion joint 1, thereby dissipating heat from the expansion joint 1. When the two flanges 2 move away from each other, the blade assembly 509 reverses and draws in air. At this time, it also draws away the hot air from the side of the expansion joint 1, which can achieve a cooling effect.
[0029] When the two flanges 2 approach each other, they drive the two connecting rods 604 inside to move inward in the gas chamber 601. When the connecting rods 604 move, they drive the sealing plate 603 to move. When the sealing plate 603 moves, the gas in the gas chamber 601 is blown from the gas hole 605 to the side of the expansion joint 1, which improves the heat dissipation effect. When the two connecting rods 604 move away from each other, the two sealing plates 603 move away from each other and draw in air through the gas hole 605. At this time, the hot air is drawn away, which can achieve the cooling effect. The hot air will be cooled in the gas chamber 601, so that the temperature of the blown gas is lower.
[0030] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A reinforced metal compensator for a circulating fluidized bed boiler, comprising an expansion joint (1), characterized in that: The expansion joint (1) is fixedly connected to flanges (2) at both ends. Connecting lugs (3) are fixedly connected to the sides of the flanges (2). Limiting rods (4) are movably connected inside the connecting lugs (3). A first heat dissipation mechanism (5) is fixedly connected to the sides of the two flanges (2) that are close to each other, and a second heat dissipation mechanism (6) is fixedly connected to the sides of the two flanges (2) that are close to each other. The first heat dissipation mechanism (5) includes a rack (501) fixedly connected to the flanges (2). The sides of the rack (501) mesh with… The assembly includes a connecting gear (502), with a connecting shaft (503) fixedly connected to the bottom end of the connecting gear (502). A synchronizing gear (504) is fixedly connected to the bottom end of the connecting shaft (503). A transmission gear (506) meshes with the side of the synchronizing gear (504). An output gear (507) meshes with the side of the transmission gear (506) away from the connecting shaft (503). A blade shaft (508) is fixedly connected to the bottom end of the output gear (507). A blade assembly (509) is fixedly connected to the bottom end of the blade shaft (508).
2. The enhanced metal compensator for a circulating fluidized bed boiler according to claim 1, characterized in that: The number of the first heat dissipation mechanism (5) is four, and the four first heat dissipation mechanisms (5) are distributed at equal angles between the flanges (2). The number of the second heat dissipation mechanism (6) is two, and the two flanges (2) are located on both sides of the expansion joint (1).
3. The enhanced metal compensator for a circulating fluidized bed boiler according to claim 1, characterized in that: The side of the connecting shaft (503) is movably connected to a support plate (505), the side of the support plate (505) is fixedly connected to the side of the flange (2), and the bottom ends of the transmission gear (506) and the output gear (507) are movably connected to the bottom end of the support plate (505).
4. A reinforced metal compensator for a circulating fluidized bed boiler according to claim 3, characterized in that: The blade assembly (509) has a protective ring (510) on its side. The blade assembly (509) is located inside the protective ring (510). A support rod (511) is fixedly connected to the side of the protective ring (510). The side of the support rod (511) is fixedly connected to the side of the flange (2).
5. A reinforced metal compensator for a circulating fluidized bed boiler according to claim 1, characterized in that: The second heat dissipation mechanism (6) includes a gas chamber (601) that can contain gas. Limiting frames (602) are fixedly connected to both sides of the gas chamber (601). Sealing plates (603) are movably connected to both ends inside the gas chamber (601). Connecting rods (604) are fixedly connected to the sides of the sealing plates (603) that are far apart from each other.
6. A reinforced metal compensator for a circulating fluidized bed boiler according to claim 5, characterized in that: The side of the connecting rod (604) away from the gas chamber (601) is fixedly connected to the side of the flange (2), and the gas chamber (601) has a gas hole (605) in the middle of the side near the expansion joint (1).