Anti-abrasion flow guide device for cold wall pipe of circulating fluidized bed

Abstract

The utility model discloses an anti-abrasion flow guide device for a cold wall pipe of a circulating fluidized bed, which relates to the field of anti-abrasion flow guide of the cold wall pipe and comprises anti-abrasion flow guide plates mounted on the outer wall of the cold wall pipe, and the two spliced anti-abrasion flow guide plates are of a hollow trumpet-shaped structure. The narrow end of the anti-abrasion flow guide plate is connected with a sleeve connected with the cold wall pipe; first connecting plates are integrally formed at the upper end and the lower end of the butt joint face of one anti-abrasion flow guide plate, second connecting plates are integrally formed at the upper end and the lower end of the butt joint face of the other anti-abrasion flow guide plate, and the first connecting plates and the second connecting plates are fixedly connected through mounting mechanisms. An elastic mechanism for limiting the mounting mechanism is arranged in the second connecting plate and used for improving the stability of the mounting mechanism. By arranging the fixing mechanism and the elastic mechanism, the device can be conveniently fixed on the outer wall of the cold wall pipe, and meanwhile, the device is convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to the field of cold wall pipe anti-wear and flow guidance, in particular to an anti-wear and flow guidance device for cold wall pipes of a circulating fluidized bed. Background Art

[0002] The main way of wear of the convection heating surface at the rear of the circulating fluidized bed boiler is that the solid particles contained in the flue gas impact the material surface at a certain angle, causing wear. Therefore, in order to protect the cold wall tube, an anti-wear guide device will be added to the surface of the cold wall tube to extend the service life of the cold wall tube.

[0003] In the prior art, the anti-wear guide device is generally fixed to the cold wall tube by bolts. After the device has been used for a long time (generally: 1-3 years), when replacing a new anti-wear guide device, the bolts need to be removed one by one, and due to the small space in the boiler, replacement is inconvenient. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-wear and flow guiding device for cold wall tubes of a circulating fluidized bed in order to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-wear and flow guide device for a cold-wall tube of a circulating fluidized bed, comprising an anti-wear and flow guide plate installed on the outer wall of the cold-wall tube, the two anti-wear and flow guide plates in a spliced ​​state are in a hollow trumpet-shaped structure, and the narrow end of the anti-wear and flow guide plate is connected to a sleeve connected to the cold-wall tube; a No. 1 connecting plate is integrally formed at both upper and lower ends of the docking surface of one of the anti-wear and flow guide plates, and a No. 2 connecting plate is integrally formed at both upper and lower ends of the docking surface of the other anti-wear and flow guide plate, and the No. 1 connecting plate is fixedly connected to the No. 2 connecting plate by a mounting mechanism; an elastic mechanism for limiting the mounting mechanism is arranged inside the No. 2 connecting plate, and the elastic mechanism is used to increase the stability of the mounting mechanism.

[0006] As a further solution of the utility model: the installation mechanism includes a rotating rod with one end rotatably connected to the inside of the No. 1 connecting plate, the other end of the rotating rod is integrally formed with a circular plate, and the outer circumference of the circular plate is integrally formed with a strip plate protruding outward.

[0007] As a further solution of the utility model: the installation mechanism also includes a through hole opened inside the second connecting plate, and the inner periphery of the through hole is provided with a strip hole extending outward; the inner wall of the strip hole coincides with the outer wall of the strip plate, and the inner diameter of the through hole is equal to the outer diameter of the circular plate.

[0008] As a further solution of the utility model: the elastic mechanism includes a slide groove opened inside the second connecting plate, a spring is installed on the inner wall of the slide groove, and one end of the spring away from the closed end of the slide groove is connected to an elastic column penetrating to the outside of the second connecting plate.

[0009] As a further solution of the utility model: the end of the elastic column located outside the second connecting plate is in a hemispherical structure, and a hemispherical receiving groove is provided on the end surface of the strip plate close to the second connecting plate, and the receiving groove is used to accommodate the hemispherical end of the elastic column.

[0010] As a further solution of the utility model: the elastic column is located at one end inside the slide groove and is formed with an anti-slip portion, the diameter of the anti-slip portion is equal to the inner diameter of the non-open end of the spring, the diameter of the elastic column is equal to the inner diameter of the open end of the spring, and the diameter of the anti-slip portion is greater than the diameter of the elastic column.

[0011] As a further solution of the utility model: a plurality of reinforcing ribs are circumferentially and equidistantly arranged inside the anti-wear guide plate, and the reinforcing ribs are used to increase the wear resistance of the anti-wear guide plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting a fixing mechanism and an elastic mechanism, the device can be conveniently fixed to the outer wall of the cold wall tube and is also convenient for disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the connection between the No. 1 connection plate and the No. 2 connection plate of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the No. 1 connecting plate and the No. 2 connecting plate of the utility model;

[0017] Figure 4 For the utility model Figure 3 A partial enlarged view of point A in the middle.

[0018] In the figure: 1. anti-wear guide plate; 2. reinforcing ribs; 3. connecting plate No. 1; 4. connecting plate No. 2; 5. sleeve; 6. strip hole; 7. round plate; 8. strip plate; 9. through hole; 10. rotating rod; 11. spring; 12. elastic column; 13. receiving groove; 14. slide groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 to Figure 4 In an embodiment of the utility model, an anti-wear and flow guide device for a cold-wall tube of a circulating fluidized bed comprises an anti-wear and flow guide plate 1 installed on the outer wall of the cold-wall tube, the two anti-wear and flow guide plates 1 in a spliced ​​state are in a hollow trumpet-shaped structure, and the narrow end of the anti-wear and flow guide plate 1 is connected to a sleeve 5 connected to the cold-wall tube; a first connecting plate 3 is integrally formed at both upper and lower ends of the docking surface of one anti-wear and flow guide plate 1, and a second connecting plate 4 is integrally formed at both upper and lower ends of the docking surface of the other anti-wear and flow guide plate 1, and the first connecting plate 3 is fixedly connected to the second connecting plate 4 by an installation mechanism; an elastic mechanism for limiting the installation mechanism is arranged inside the second connecting plate 4, and the elastic mechanism is used to increase the stability of the installation mechanism.

[0021] In this embodiment: during installation, two sleeves 5 are sleeved on both sides of the outer wall of the cold wall tube, and the sleeves 5 drive the butt surfaces of the two anti-wear guide plates 1 to contact, at which time the two parts of the fixing mechanism of the No. 1 connecting plate 3 and the No. 2 connecting plate 4 are plugged in, and then the fixing mechanism part connected to the No. 1 connecting plate 3 is rotated, and the fixing mechanism part on the No. 1 connecting plate 3 is displaced with the fixing mechanism on the No. 2 connecting plate 4, and the device is fixed to the outer wall of the cold wall tube;

[0022] When the fixing mechanism part on the No. 1 connecting plate 3 rotates, it will dock with the elastic structure. The elastic mechanism limits this part of the elastic mechanism, thereby increasing the stability of this part of the fixing mechanism. This connection method can be conveniently disassembled and replaced when the device is severely worn after long-term use of the boiler. The disassembly process is the opposite of the above-mentioned installation process.

[0023] Please refer to Figure 3 Figure 4 The installation mechanism includes a rotating rod 10 with one end rotatably connected to the inside of the first connecting plate 3, and the other end of the rotating rod 10 is integrally formed with a circular plate 7, and the outer circumference of the circular plate 7 is integrally formed with a strip plate 8 protruding outward. The installation mechanism also includes a through hole 9 opened in the inside of the second connecting plate 4, and the inner circumference of the through hole 9 is provided with a strip hole 6 extending outward; the inner wall of the strip hole 6 coincides with the outer wall of the strip plate 8, and the inner diameter of the through hole 9 is equal to the outer diameter of the circular plate 7.

[0024] In this embodiment: after the No. 1 connecting plate 3 is connected with the No. 2 connecting plate 4, the No. 1 connecting plate 3 drives the rotating rod 10 and the circular plate 7 to pass through the through hole 9 until the circular plate 7 completely passes through the through hole 9. During this process, the circular plate 7 drives the strip plate 8 to pass through the strip hole 6. At this time, the circular plate 7, the strip plate 8, the through hole 9, and the strip hole 6 are misaligned. A rotational force is applied to the strip plate 8, and the strip plate 8 drives the circular plate 7 to rotate. At this time, the strip plate 8 is misaligned with the strip hole 6 until the strip plate 8 rotates one hundred and eighty degrees. At this time, the strip plate 8 is connected to the elastic mechanism to limit the position of the strip plate 8.

[0025] Please refer to Figure 3 and Figure 4 The elastic mechanism includes a slide groove 14 opened inside the second connecting plate 4, and a spring 11 is installed on the inner wall of the slide groove 14. The end of the spring 11 away from the closed end of the slide groove 14 is connected to an elastic column 12 that penetrates to the outside of the second connecting plate 4. The end of the elastic column 12 located outside the second connecting plate 4 is in a hemispherical structure. A hemispherical receiving groove 13 is opened on the end surface of the strip plate 8 close to the second connecting plate 4. The receiving groove 13 is used to accommodate the hemispherical end of the elastic column 12. An anti-slip portion is formed at one end of the elastic column 12 located inside the slide groove 14. The diameter of the anti-slip portion is equal to the inner diameter of the non-open end of the spring 11, the diameter of the elastic column 12 is equal to the inner diameter of the open end of the spring 11, and the diameter of the anti-slip portion is larger than the diameter of the elastic column 12.

[0026] In this embodiment: during the rotation of the strip plate 8, the edge of the strip plate 8 squeezes the hemispherical end of the elastic column 12. At this time, the elastic column 12 is subjected to a squeezing force, and the elastic column 12 is forced to squeeze the spring 11. At the same time, the elastic column 12 moves into the slide groove 14 until the elastic column 12 completely enters the slide groove 14. When the receiving groove 13 is aligned with the elastic column 12, the spring 11 is reset, and the spring 11 drives the elastic column 12 to reset. At this time, the hemispherical end of the elastic column 12 is stuck in the receiving groove 13, and the circular plate 7 and the strip plate 8 are limited.

[0027] The provision of the anti-slip portion can ensure that only the hemispherical end of the elastic column 12 is located outside the second connecting plate 4 .

[0028] Please refer to Figure 1 A plurality of reinforcing ribs 2 are equidistantly arranged in the circumferential direction inside the anti-wear guide plate 1 , and the reinforcing ribs 2 are used to increase the wear resistance of the anti-wear guide plate 1 .

[0029] In this embodiment: the reinforcing ribs 2 are made of wear-resistant and high-temperature resistant ceramic material, which further improves the wear resistance of the anti-wear guide plate 1, thereby increasing the service life of the device.

[0030] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-wear guide device for a cold wall tube of a circulating fluidized bed, comprising an anti-wear guide plate (1) installed on the outer wall of the cold wall tube, characterized in that: The two anti-wear guide plates (1) in a spliced ​​state are in a hollow trumpet-shaped structure, and the narrow end of the anti-wear guide plate (1) is connected to a sleeve (5) connected to the cold wall tube; A first connecting plate (3) is integrally formed at both upper and lower ends of the butt joint surface of one of the anti-wear guide plates (1), and a second connecting plate (4) is integrally formed at both upper and lower ends of the butt joint surface of the other anti-wear guide plate (1), and the first connecting plate (3) and the second connecting plate (4) are fixedly connected via a mounting mechanism; An elastic mechanism for limiting the mounting mechanism is arranged inside the second connecting plate (4), and the elastic mechanism is used to increase the stability of the mounting mechanism.

2. The wear-resistant flow-guiding device for cold-wall tubes of a circulating fluidized bed according to claim 1, characterized in that: The mounting mechanism comprises a rotating rod (10) having one end rotatably connected to the inside of the first connecting plate (3), the other end of the rotating rod (10) is integrally formed with a circular plate (7), and the outer circumference of the circular plate (7) is integrally formed with a strip plate (8) protruding outward.

3. The wear-resistant flow-guiding device for cold-wall tubes of a circulating fluidized bed according to claim 2, characterized in that: The mounting mechanism further comprises a through hole (9) formed inside the second connecting plate (4), and a strip hole (6) extending outward is formed on the inner periphery of the through hole (9); The inner wall of the strip-shaped hole (6) matches the outer wall of the strip-shaped plate (8), and the inner diameter of the through hole (9) is equal to the outer diameter of the circular plate (7).

4. The wear-resistant flow-guiding device for cold-wall tubes of a circulating fluidized bed according to claim 3, characterized in that: The elastic mechanism comprises a slide groove (14) opened inside the second connecting plate (4), a spring (11) is installed on the inner wall of the slide groove (14), and an end of the spring (11) away from the closed end of the slide groove (14) is connected to an elastic column (12) penetrating to the outside of the second connecting plate (4).

5. The wear-resistant flow-guiding device for cold-wall tubes of a circulating fluidized bed according to claim 4, characterized in that: One end of the elastic column (12) located outside the second connecting plate (4) is in a hemispherical structure, and a hemispherical receiving groove (13) is provided on the end surface of the strip plate (8) close to the second connecting plate (4), and the receiving groove (13) is used to receive the hemispherical end of the elastic column (12).

6. The wear-resistant flow-guiding device for cold-wall tubes of a circulating fluidized bed according to claim 5, characterized in that: The elastic column (12) is formed with an anti-slip portion at one end located inside the slide groove (14), the diameter of the anti-slip portion is equal to the inner diameter of the non-open end of the spring (11), the diameter of the elastic column (12) is equal to the inner diameter of the open end of the spring (11), and the diameter of the anti-slip portion is greater than the diameter of the elastic column (12).

7. The wear-resistant flow-guiding device for cold-wall tubes of a circulating fluidized bed according to claim 1, characterized in that: The interior of the anti-wear guide plate (1) is provided with a plurality of reinforcing ribs (2) at equal intervals in the circumferential direction, and the reinforcing ribs (2) are used to increase the wear resistance of the anti-wear guide plate (1).

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