Circulating fluidized bed multi-dimensional compensator

Abstract

This utility model discloses a multi-dimensional compensator for circulating fluidized beds, including a first pipe and a second pipe, with a distance between them. A fixed plate is fixedly connected to both the first and second pipes. A corrugated pipe is sleeved around the outside of the first and second pipes, with end plates fixedly connected to both ends. A flange is sleeved around the end plates, and an elastic connection device is provided between the flange and the fixed plate to compensate for the axial expansion and contraction of the first and second pipes. This utility model belongs to the technical field of circulating fluidized bed piping systems, specifically solving the problem that existing pipe compensators can only compensate for axial expansion and contraction, but cannot compensate for lateral offset or angular deflection, making them relatively simple and unable to meet the needs of practical applications.

Description

Technical Field

[0001] This utility model belongs to the technical field of circulating fluidized bed pipeline systems, specifically referring to a circulating fluidized bed multidimensional compensator. Background Technology

[0002] Circulating fluidized bed reactors (such as CFB boilers and CFB gasifiers) are commonly used high-efficiency reaction equipment in industrial fields (power, chemical, environmental protection, etc.). However, their piping systems (such as flue gas pipelines, material conveying pipelines, and high-temperature air ducts) have problems: temperature differences cause thermal expansion and contraction of the pipelines, and drastic changes in the temperature of the medium inside the pipelines can cause significant expansion and contraction deformation along the length and radial direction of the pipelines. If the deformation is constrained, it will generate huge thermal stress, leading to pipeline cracking, joint leakage, or damage to the equipment base.

[0003] To address the deformation caused by thermal expansion and contraction of pipelines, compensators are needed to connect the pipelines to release the deformation. The most common compensators are those that address axial expansion and contraction of pipelines. However, they have shortcomings: in reality, in addition to axial expansion and contraction compensation, there may also be lateral offset compensation, as well as slight angular deflection compensation caused by pipeline weight or thermal expansion. Therefore, single-directional compensation cannot meet the requirements and needs to be improved. Utility Model Content

[0004] The technical problem this invention aims to solve is that existing pipeline compensators can only compensate for axial expansion and contraction, but cannot compensate for lateral offset or angular deflection. They are relatively simple and cannot meet the needs of practical applications.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows: a circulating fluidized bed multidimensional compensator includes a pipe one and a pipe two, with a distance between the pipe one and the pipe two. A fixed plate is fixedly connected to both the pipe one and the pipe two. A corrugated pipe is sleeved on the outside of the pipe one and the pipe two. End plates are fixedly connected to both ends of the corrugated pipe. A flange is sleeved on the outside of the end plate. An elastic connection device is provided between the flange and the fixed plate to compensate for the axial expansion and contraction of the pipe one and the pipe two.

[0006] Furthermore, the elastic connection device includes a fixing rod, which is fixed to the fixing plate and passes through the flange. Several sets of fixing rods are arranged in a circumferential array on the fixing plate. The end of the fixing rod is provided with a threaded head, and a nut is threadedly connected to the threaded head. The nut and the threaded head can achieve self-locking. A spring is sleeved on the fixing rod. One end of the spring is fixed to the fixing plate and the other end is connected to the flange.

[0007] Furthermore, the end plate has an inverted T-shaped cross-section that matches the interior of the flange.

[0008] Furthermore, both pipe one and pipe two are fitted with sealing rings, which are slidably and sealingly connected to the inner wall of the bellows.

[0009] Furthermore, the corrugated pipe is made of metal, and its elastic modulus is sufficient to automatically recover to its original shape after deformation.

[0010] Furthermore, the gap between the fixed plate and the flange can accommodate the axial expansion and contraction space of pipe one and pipe two.

[0011] The beneficial effects achieved by adopting the above-described structure are as follows:

[0012] 1. This utility model, by setting an elastic connection device, inserts the fixing rod into the flange and screws it into the threaded head with a nut, which can prevent the fixing rod from detaching from the flange during the expansion and contraction process. When pipe one and pipe two expand and contract axially, the gap between the flange and the fixing plate can be compensated, thus realizing axial expansion and contraction compensation.

[0013] 2. By setting an end plate, this utility model will drive the flange to rotate on the end plate to compensate when the first pipe and the second pipe deflect at an angle, thereby realizing the deflection compensation of the glue box.

[0014] 3. This utility model incorporates a corrugated pipe, which is made of a high-temperature resistant metal material and has the ability to self-recover from deformation. When pipe one and pipe two are laterally offset, the corrugated pipe can provide lateral compensation for pipe one and pipe two. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of a circulating fluidized bed multidimensional compensator according to the present invention;

[0016] Figure 2 This is a cross-sectional structure of a circulating fluidized bed multidimensional compensator according to the present invention. Figure 1 ;

[0017] Figure 3 This is a cross-sectional structure of a circulating fluidized bed multidimensional compensator according to the present invention. Figure 2 ;

[0018] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle.

[0019] Among them, 1. Pipe 1, 2. Pipe 2, 3. Fixed plate, 4. Corrugated pipe, 5. End plate, 6. Flange, 7. Flexible connection device, 8. Fixed rod, 9. Threaded head, 10. Nut, 11. Spring, 12. Sealing ring. Detailed Implementation

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

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] like Figure 1-4 This utility model discloses a multidimensional compensator for a circulating fluidized bed, comprising a pipe 1 and a pipe 2, with a distance between them. A fixing plate 3 is fixedly connected to both pipe 1 and pipe 2. A corrugated pipe 4, made of metal, is sleeved around the outside of both pipes, and its elastic modulus is sufficient to automatically return to its original shape after deformation. A sealing ring 12 is fitted onto both pipes 1 and 2, and the sealing ring 12 is slidably sealed to the inner wall of the corrugated pipe 4. End plates 5 are fixedly connected to both ends of the corrugated pipe 4. An external flange 6 is fitted. The gap between the fixed plate 3 and the flange 6 can meet the axial expansion and contraction space of pipe 1 and pipe 2. The end plate 5 has an inverted T-shaped cross-section and matches the interior of the flange 6. In this way, when pipe 1 and pipe 2 drive the flange 6 to rotate, the flange 6 can rotate around the bellows 4 to compensate for the angular deflection of pipe 1 and pipe 2. An elastic connection device 7 is provided between the flange 6 and the fixed plate 3 to compensate for the axial expansion and contraction of pipe 1 and pipe 2.

[0023] like Figure 1-4 The elastic connection device 7 includes a fixing rod 8, which is fixed to the fixing plate 3 and passes through the flange 6. Several sets of fixing rods 8 are arranged in a circumferential array on the fixing plate 3. The end of the fixing rod 8 is provided with a threaded head 9, and a nut 10 is threadedly connected to the threaded head 9. The nut 10 and the threaded head 9 can achieve self-locking. A spring 11 is sleeved on the fixing rod 8. One end of the spring 11 is fixed to the fixing plate 3 and the other end is connected to the flange 6. By turning the nut 10 on the threaded head 9, the fixing rod 8 can be prevented from detaching from the flange 6 when the pipe 1 and the pipe 2 expand and contract axially.

[0024] In practical use, when installing the corrugated pipe 4, the corrugated pipe 4 is sleeved on pipe 1 and pipe 2, and the fixing rod 8 is inserted into the corresponding hole reserved in the flange 6. At this time, there is space between pipe 1 and pipe 2 so that they will not touch each other when they expand and contract axially.

[0025] When the fixing rod 8 passes through the flange 6, it will not pass through the end plate 5. It is screwed into the threaded head 9 by means of threads, so that the spring 11 has elastic force on the flange 6. When the pipe 1 and the pipe 2 expand and contract axially, the fixing plate 3 will drive the fixing rod 8 to slide in the flange 6. The spring 11 helps to restore the original shape. In this way, the axial expansion and contraction compensation of the pipe 1 and the pipe 2 in the bellows 4 can be performed.

[0026] When pipe 1 and pipe 2 deflect at an angle, the fixing rod 8 will drive the flange 6 to rotate on the end plate 5 without disengaging, thus achieving angular deflection compensation for pipe 1 and pipe 2. When pipe 1 and pipe 2 shift laterally, since the bellows 4 is made of metal and has restorative deformation capability, it can achieve lateral shift compensation for pipe 1 and pipe 2.

[0027] In this solution, the flange 6 on the bellows 4 is easy to connect with the fixed plate 3, and the bellows 4 is also easy to procure and mass-produce in the existing technology. It can not only meet the axial expansion and contraction compensation of pipe 1 and pipe 2, but also meet the angular deflection compensation of pipe 1 and pipe 2, and at the same time, it can also compensate for the lateral offset of pipe 1 and pipe 2, realizing multi-dimensional compensation. In the circulating fluidized bed pipeline system, it is practical and innovative, with broad application prospects and is worth promoting.

[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A circulating fluidized bed multidimensional compensator, comprising pipe one (1) and pipe two (2), characterized in that: There is a gap between the first pipe (1) and the second pipe (2). The first pipe (1) and the second pipe (2) are both fixedly connected to a fixed plate (3). The first pipe (1) and the second pipe (2) are fitted with a corrugated pipe (4). The two ends of the corrugated pipe (4) are fixedly connected to end plates (5). The end plates (5) are fitted with a flange (6). An elastic connection device (7) is provided between the flange (6) and the fixed plate (3) to compensate for the axial expansion and contraction of the first pipe (1) and the second pipe (2).

2. The circulating fluidized bed multidimensional compensator according to claim 1, characterized in that: The elastic connection device (7) includes a fixing rod (8), which is fixed on the fixing plate (3) and passes through the flange (6). The fixing rod (8) is arranged in several groups on the fixing plate (3). The end of the fixing rod (8) is provided with a threaded head (9). A nut (10) is threaded onto the threaded head (9). A spring (11) is sleeved on the fixing rod (8). One end of the spring (11) is fixedly connected to the fixing plate (3), and the other end is overlapped with the flange (6).

3. A circulating fluidized bed multidimensional compensator according to claim 1, characterized in that: The end plate (5) has an inverted T-shaped cross-section and matches the internal structure of the flange (6).

4. A circulating fluidized bed multidimensional compensator according to claim 1, characterized in that: Both pipe one (1) and pipe two (2) are fitted with sealing rings (12), and the sealing rings (12) are slidably sealed to the inner wall of the corrugated pipe (4).

5. A circulating fluidized bed multidimensional compensator according to claim 1, characterized in that: The corrugated pipe (4) is made of metal, and its elastic modulus is sufficient to automatically recover its original shape after deformation.

6. A circulating fluidized bed multidimensional compensator according to claim 1, characterized in that: A gap is left between the fixed plate (3) and the flange (6), which can meet the axial expansion and contraction space of pipe one (1) and pipe two (2).

7. A circulating fluidized bed multidimensional compensator according to claim 2, characterized in that: The nut (10) and the threaded head (9) are self-locking.

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