Middle partition wall for circulating fluidized bed boiler

Abstract

The utility model discloses a middle partition wall for a circulating fluidized bed boiler, which comprises a middle partition wall main body, a pressing component is arranged at the inner top of the middle partition wall main body, a plurality of stages of partition plates are arranged on the inner wall of the middle partition wall main body, a cavity is formed among the plurality of stages of partition plates, clamping components are symmetrically arranged on the partition plates, and each clamping component comprises a shaft seat. A limiting groove is formed in the shaft seat and penetrates through the top of the shaft seat, a spring push seat is movably connected into the limiting groove, and a clamping plate is arranged on the upper end face of the spring push seat. Damage to the refractory material caused by deformation of the steel structure is avoided, so that the mid-partition main body is stable and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler devices, in particular to a middle partition wall for a circulating fluidized bed boiler. Background Art

[0002] Circulating fluidized bed (CFB) combustion technology is a clean combustion technology with advantages such as good fuel adaptability, high efficiency and low pollutant emissions. In recent years, domestic and international CFB boiler technology has developed rapidly. The large-scale CFB boilers put into operation in China are 660MW supercritical parameter level, and ultra-supercritical CFB furnaces of 660MW and above are under construction. International supercritical parameter CFB boilers have also been put into operation;

[0003] The middle partition wall is mainly used in the external heat exchanger of the circulating fluidized bed boiler. The external bed heat exchanger is also called the external bed. There are many other names. The equipment name on the patent should cover all similar equipment. When the circulating fluidized bed boiler is running, the temperature inside the external bed is about 850℃.

[0004] However, after the existing intermediate partition wall has been used for a period of time, insufficient cooling in the middle causes the steel plate to deform and the refractory material of the intermediate partition wall to fall off easily. Utility Model Content

[0005] The utility model aims to provide a middle partition wall for a circulating fluidized bed boiler to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a middle partition wall for a circulating fluidized bed boiler, comprising: a middle partition wall main body, a downward pressure assembly is arranged on the inner top of the middle partition wall main body, a multi-stage partition plate is arranged on the inner wall of the middle partition wall main body, a cavity is formed between the multi-stage partition plates, clamping assemblies are symmetrically arranged on the partition plates, the clamping assembly comprises an axle seat, a limiting groove is arranged inside the axle seat, the limiting groove passes through the top of the axle seat, a spring push seat is movably connected in the limiting groove, and a clamping plate is arranged on the upper end surface of the spring push seat.

[0007] Preferably, the pressing assembly comprises a pushing plate, a fixing plate and sleeves symmetrically arranged front and back, the fixing plate is installed on the inner top of the middle partition wall body, and a first connecting seat is symmetrically arranged at one end of the pushing plate and the fixing plate close to each other.

[0008] Preferably, the outer wall of the sleeve is symmetrically provided with second connecting seats, and a movable rod is rotatably connected between adjacent first connecting seats and second connecting seats.

[0009] Preferably, a shaft rod is movably connected inside the symmetrically arranged sleeve, and the shaft rod passes through the sleeve and limit plates are arranged at both ends.

[0010] Preferably, a first spring is arranged between the symmetrically arranged sleeves, and the first spring surrounds the shaft.

[0011] Preferably, the clamping plate is designed to be L-shaped.

[0012] Preferably, a refractory material is arranged in the cavity.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model can fix the refractory material by arranging the parts structures such as the pressing component, the pushing plate, the first connecting seat, the fixing plate, the sleeve, the second connecting seat, the movable rod, the first spring, the shaft rod, the limiting plate and the clamping component, the shaft seat, the limiting groove, the spring pushing seat, and the clamping plate, so as to avoid the damage of the refractory material caused by the deformation of the steel structure, and the main body of the partition wall is stable and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the pressing assembly in Example 1 of the utility model;

[0017] Figure 3 It is an enlarged view of point A in Example 1 of the utility model;

[0018] Figure 4 This is an enlarged view of point B in Example 1 of the utility model.

[0019] In the figure: 1. middle partition wall body; 11. partition; 12. cavity; 2. pressing assembly; 21. pushing plate; 211. first connecting seat; 22. fixing plate; 23. sleeve; 231. second connecting seat; 232. movable rod; 233. first spring; 24. shaft rod; 241. limiting plate; 3. clamping assembly; 31. shaft seat; 32. limiting groove; 321. spring push seat; 322. clamping plate; 4. refractory material. DETAILED DESCRIPTION

[0020] 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.

[0021] Embodiment 1:

[0022] See also Figures 1 to 4 The utility model provides a technical solution: a middle partition wall for a circulating fluidized bed boiler, comprising: a middle partition wall body 1, a downward pressing component 2 is arranged on the inner top of the middle partition wall body 1, a multi-stage partition board 11 is arranged on the inner wall of the middle partition wall body 1, a cavity 12 is formed between the multi-stage partition boards 11, a clamping component 3 is symmetrically arranged on the partition board 11, and the clamping component 3 comprises an axle seat 31, a limiting groove 32 is arranged inside the axle seat 31, and the limiting groove 32 runs through the top of the axle seat 31, a spring push seat 321 is movably connected in the limiting groove 32, and a clamping plate 322 is arranged on the upper end surface of the spring push seat 321.

[0023] Specifically: the design of the pressing component 2 and the clamping component 3 can fix the refractory material 4, avoiding damage to the refractory material 4 caused by deformation of the steel structure, making the middle partition wall body 1 more stable and having a long service life.

[0024] Based on the above embodiment, the pressing assembly 2 includes a pushing plate 21, a fixing plate 22 and a sleeve 23 symmetrically arranged front and back, the fixing plate 22 is installed on the inner top of the middle partition wall body 1, and the first connecting seat 211 is symmetrically arranged at one end where the pushing plate 21 and the fixing plate 22 are close to each other. This design can connect the movable rod 232.

[0025] The outer wall of the sleeve 23 is symmetrically provided with second connection seats 231 , and a movable rod 232 is rotatably connected between the adjacent first connection seats 211 and the second connection seats 231 , and the movable rod 232 can push the push plate 21 downward.

[0026] A shaft rod 24 is movably connected in the symmetrically arranged sleeve 23 . The shaft rod 24 passes through the sleeve 23 . Limiting plates 241 are arranged at both ends. The limiting plates 241 are designed to limit the shaft rod 24 .

[0027] A first spring 233 is disposed between the symmetrically disposed sleeves 23 . The first spring 233 surrounds the shaft 24 . The first spring 233 is designed to pull the sleeves 23 in opposite directions.

[0028] The clamping plate 322 is designed to be L-shaped, which can be clamped on the refractory material 4.

[0029] The cavity 12 is provided with a refractory material 4, and this design has good refractory performance.

[0030] The working principle of this embodiment is as follows: the pushing plate 21 is pressed in the direction of the fixing plate 22. At this time, the movable rod 232 will be squeezed, causing the two sleeves 23 to move in opposite directions. At the same time, the first spring 233 will also be pulled, and then the clamping plate 322 is pushed in the direction of the shaft seat 31, so that the spring push seat 321 is accommodated in the limiting groove 32 of the shaft seat 31, and then the refractory material 4 is installed inside the middle partition wall body 1. After placing it, the clamping plate 322 and the pushing plate 21 are loosened at the same time. At this time, the spring push seat 321 is reset, so that the clamping plate 322 is stuck in the refractory material 4, and the pushing plate 21 is no longer restricted. The first spring 233 pulls the sleeve 23 in the opposite direction, so that the movable rod 232 is opened to push out the pushing plate 21, so that the refractory material 4 can be fixed in the middle partition wall body 1, and it can be put into use after being fixed.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A middle partition wall for a circulating fluidized bed boiler, comprising: A middle partition wall body (1) is characterized in that: a pressing component (2) is arranged at the inner top of the middle partition wall body (1), a multi-stage partition board (11) is arranged on the inner wall of the middle partition wall body (1), a cavity (12) is formed between the multi-stage partition boards (11), a clamping component (3) is symmetrically arranged on the partition board (11), and the clamping component (3) includes an axle seat (31), a limiting groove (32) is arranged inside the axle seat (31), and the limiting groove (32) runs through the top of the axle seat (31), a spring push seat (321) is movably connected in the limiting groove (32), and a clamping plate (322) is arranged on the upper end surface of the spring push seat (321).

2. The intermediate partition wall for a circulating fluidized bed boiler according to claim 1, characterized in that: The pressing assembly (2) comprises a pushing plate (21), a fixing plate (22) and a sleeve (23) symmetrically arranged front and back, wherein the fixing plate (22) is installed on the inner top of the middle partition wall body (1), and a first connecting seat (211) is symmetrically arranged at one end of the pushing plate (21) and the fixing plate (22) close to each other.

3. The intermediate partition wall for a circulating fluidized bed boiler according to claim 2, characterized in that: The outer wall of the sleeve (23) is symmetrically provided with a second connection seat (231), and a movable rod (232) is rotatably connected between the adjacent first connection seat (211) and the second connection seat (231).

4. The intermediate partition wall for a circulating fluidized bed boiler according to claim 3, characterized in that: A shaft rod (24) is movably connected inside the symmetrically arranged sleeve (23), and the shaft rod (24) passes through the sleeve (23) and is provided with limit plates (241) at both ends.

5. The intermediate partition wall for a circulating fluidized bed boiler according to claim 4, characterized in that: A first spring (233) is arranged between the symmetrically arranged sleeves (23), and the first spring (233) surrounds the shaft (24).

6. The intermediate partition wall for a circulating fluidized bed boiler according to claim 1, characterized in that: The clamping plate (322) is designed to be L-shaped.

7. The intermediate partition wall for a circulating fluidized bed boiler according to claim 6, characterized in that: A refractory material (4) is arranged in the cavity (12).

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