Mesh-shaped anti-abrasion grating device for water cooling wall of CFB boiler

Abstract

The utility model discloses a CFB (circulating fluid bed) boiler water-cooled wall netted anti-abrasion grating device, which relates to the field of CFB boiler water-cooled walls and comprises a water-cooled wall main body, a connecting rod is transversely and fixedly connected to the front side of the water-cooled wall main body, a transverse partition plate is movably mounted outside the connecting rod, the connecting rod comprises a transverse rod and a positioning hole formed in the transverse rod, and the transverse partition plate is movably mounted in the transverse rod. The transverse partition plate comprises a transverse plate body, and inserting grooves corresponding to the transverse rods are formed in the rear side of the transverse plate body. According to the utility model, the cross rods are connected outside the water-cooled wall main body, the cross plate bodies are correspondingly inserted outside the cross rods through the slots on the rear sides of the cross plate bodies, the fixing bolts I are screwed into the positioning holes along the fixing holes I for mounting and fixing, and the longitudinal partition plates are mounted between the transverse partition plates; and when the transverse partition plates or the longitudinal partition plates are damaged, the transverse partition plates or the longitudinal partition plates can be detached and replaced independently, cutting and re-welding are not needed, replacement is facilitated, and efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of water-cooled walls of CFB boilers, and particularly to a mesh anti-wear grille device for the water-cooled walls of CFB boilers. Background Art

[0002] Circulating fluidized bed combustion technology is a clean coal combustion technology highly recognized by the market. With its advantages of high efficiency, low pollution, strong adaptability to coal types, and good controllability of load regulation, it has been widely applied and developed at home and abroad. Due to the working characteristics of CFB boilers, a large number of high-temperature and high-speed moving wall-attached material particles close to the surface of the membrane wall tube row are generated in the furnace during operation. The erosion of such particles causes serious wear of the membrane wall heating surface of CFB boilers, and many boilers show wear and leakage of the membrane wall tubes after a short operation time.

[0003] For the existing problem of membrane wall wear in boilers, anti-wear grille plates are added to the membrane wall to control the gas-solid flow velocity close to the furnace wall and reduce the wear of the furnace wall. Patent No. CN206973535U discloses a grille anti-wear device for a CFB circulating fluidized bed boiler. By arranging a horizontal plate and a vertical plate connected by welding on the water-cooled wall tube, a grid protection structure is formed to slow down the wear of the water-cooled wall. However, when a certain horizontal plate or vertical plate is damaged, it needs to be cut off and then a new plate is welded to the grid protection structure, which is rather troublesome and has low efficiency. Summary of the Utility Model

[0004] To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A mesh anti-wear grille device for the water-cooled wall of a CFB boiler includes a water-cooled wall main body. A connecting rod is horizontally and fixedly connected to the front side of the water-cooled wall main body. A horizontal partition is movably installed outside the connecting rod. The connecting rod includes a cross bar and a positioning hole opened inside the cross bar. The horizontal partition includes a cross plate body. A slot corresponding to the cross bar is opened at the rear side of the cross plate body. A first fixing hole corresponding to the position of the positioning hole is opened at the top of the cross plate body. A first fixing bolt located in the positioning hole is threadedly installed inside the first fixing hole. A vertical partition is longitudinally and movably installed between the horizontal partitions.

[0006] A further improvement of the technical solution of the utility model lies in that: the vertical partition includes a vertical plate body. A second longitudinal card slot and a second longitudinal card strip are respectively arranged at the top and bottom of the vertical plate body. A second fixing hole penetrating through the second longitudinal card slot and the second longitudinal card strip is opened on the side surface of the vertical plate body. A second fixing bolt is threadedly connected inside the second fixing hole.

[0007] A further improvement of the technical solution of the utility model lies in that: a first longitudinal card slot is opened at the top of the cross plate body, and a first longitudinal card strip is opened at the bottom of the cross plate body.

[0008] A further improvement of the technical solution of the present utility model lies in that: the second longitudinal slot and the second longitudinal strip are respectively adapted to the first longitudinal slot and the first longitudinal strip.

[0009] A further improvement of the technical solution of the present utility model lies in that: a transverse strip is fixedly connected to the left side of the transverse plate body, and a transverse slot corresponding to the transverse strip is provided on the right side of the transverse plate body.

[0010] A further improvement of the technical solution of the present utility model lies in that: a transverse strip is fixedly connected to the left side of the transverse plate body, and a transverse slot corresponding to the transverse strip is provided on the right side of the transverse plate body.

[0011] A further improvement of the technical solution of the present utility model lies in that: a threaded hole corresponding to the second fixing hole is provided on the side surface of the first longitudinal strip.

[0012] A further improvement of the technical solution of the present utility model lies in that: both the transverse plate body and the vertical plate body are attached to the outer side of the main body of the water-cooled wall.

[0013] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is as follows:

[0014] The present utility model provides a CFB boiler water-cooled wall mesh anti-wear grille device, which is connected to the outside of the main body of the water-cooled wall through a cross bar. The transverse plate body is inserted outside the cross bar through the slot at the rear thereof, so that the transverse plate body fits against the wall surface of the main body of the water-cooled wall. At this time, the positions of the first fixing hole and the positioning hole are aligned. The first fixing bolt is screwed into the positioning hole along the first fixing hole for installation and fixation, and the longitudinal partition is installed between the transverse partitions. Thus, when the transverse partition or the longitudinal partition is damaged, it can be disassembled and replaced separately from the cross bar at the corresponding position, and then there is no need to cut and weld again, which is convenient for replacement and effectively improves the efficiency.

[0015] The present utility model provides a CFB boiler water-cooled wall mesh anti-wear grille device, which is clamped outside the cross bar by using the slot of the transverse plate body, and is fixed by passing the first fixing bolt through the first fixing hole and the positioning hole. The vertical plate body is spliced and clamped with the first longitudinal slot and the first longitudinal strip by using the second longitudinal slot and the second longitudinal strip, and the second fixing bolt is passed through the second fixing hole for fixation. The structure is simple, and thus it is convenient for quick disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the CFB boiler water-cooled wall mesh anti-wear grille device of the present utility model;

[0017] Figure 2 is a schematic diagram of the position of the connecting rod of the present utility model;

[0018] Figure 3 Structural schematic diagram of the transverse partition of the present utility model;

[0019] Figure 4 Structural schematic diagram of the first longitudinal card slot of the present utility model;

[0020] Figure 5 Structural schematic diagram of the longitudinal partition of the present utility model.

[0021] In the figure: 1, main body of water wall; 2, connecting rod; 21, cross bar; 22, positioning hole; 3, transverse partition; 31, cross plate body; 32, slot; 33, first fixing hole; 34, first fixing bolt; 35, transverse card strip; 36, transverse card slot; 37, first longitudinal card slot; 38, first longitudinal card strip; 4, longitudinal partition; 41, vertical plate body; 42, second longitudinal card slot; 43, second longitudinal card strip; 44, second fixing hole; 45, second fixing bolt. Specific embodiments

[0022] The following further elaborates on the present utility model in detail:

[0023] As Figures 1 to 5 shown, the present utility model provides a CFB boiler water wall mesh anti-wear grille device, including a main body of water wall 1. A connecting rod 2 is horizontally and fixedly connected to the front side of the main body of water wall 1. A transverse partition 3 is movably installed outside the connecting rod 2. The connecting rod 2 includes a cross bar 21 and a positioning hole 22 opened inside the cross bar 21. The transverse partition 3 includes a cross plate body 31. A slot 32 corresponding to the cross bar 21 is opened at the rear side of the cross plate body 31. A first fixing hole 33 corresponding to the position of the positioning hole 22 is opened at the top of the cross plate body 31. A first fixing bolt 34 located in the positioning hole 22 is threadedly installed inside the first fixing hole 33. A longitudinal partition 4 is movably installed longitudinally between the transverse partitions 3.

[0024] It is connected to the outside of the main body 1 of the water-cooled wall through a cross bar 21. The cross plate body 31 is correspondingly inserted outside the cross bar 21 by using the slot 32 on its rear side, so that the cross plate body 31 fits the wall surface of the main body 1 of the water-cooled wall. At this time, the positions of the first fixing hole 33 and the positioning hole 22 are aligned. The transverse clamping strip 35 on the side of the adjacent cross plate body 31 is correspondingly clamped into the transverse clamping groove 36 on the side of another cross plate body 31 for limit fixation. The first fixing bolt 34 is screwed into the positioning hole 22 along the first fixing hole 33 for installation and fixation, and the longitudinal partition 4 is installed between the transverse partitions 3. Thus, when the transverse partition 3 or the longitudinal partition 4 is damaged, it can be disassembled and replaced separately from the cross bar 21 at the corresponding position, and there is no need to cut and weld again, which is convenient for replacement and effectively improves the efficiency. The cross plate body 31 is clamped outside the cross bar 21 by using the slot 32, and is fixed by the first fixing bolt 34 passing through the first fixing hole 33 and the positioning hole 22. The vertical plate body 41 is spliced by using the second longitudinal clamping groove 42 and the second longitudinal clamping strip 43 and is clamped and connected in place with the first longitudinal clamping groove 37 and the first longitudinal clamping strip 38, and the second fixing bolt 45 is passed through the second fixing hole 44 for fixation. The structure is simple, and thus it is convenient for quick disassembly and assembly.

[0025] Among them, the cross bar 21 is fixed on the outer wall of the main body 1 of the water-cooled wall by welding connection to be connected with the transverse partition 3.

[0026] As Figure 5 shown, the longitudinal partition 4 includes a vertical plate body 41. The top and bottom of the vertical plate body 41 are respectively provided with a second longitudinal clamping groove 42 and a second longitudinal clamping strip 43. The side of the vertical plate body 41 is provided with a second fixing hole 44 that respectively penetrates through the second longitudinal clamping groove 42 and the second longitudinal clamping strip 43. A second fixing bolt 45 is threadedly connected inside the second fixing hole 44.

[0027] By clamping the two vertical plate bodies 41 according to the distance between the cross plate bodies 31, the second longitudinal clamping strip 43 at the bottom of the vertical plate body 41 is clamped into the second longitudinal clamping groove 42 at the top of another vertical plate body 41. At this time, the second longitudinal clamping strip 43 and the second fixing hole 44 on the side of the vertical plate body 41 coincide. By using the second fixing bolt 45 to be screwed into the second fixing hole 44 from the outside of the vertical plate body 41 and penetrate into the first fixing hole 33 for connection and fixation, a grid protection structure is formed in cooperation with the transverse partition 3 to slow down the wear of the water-cooled wall.

[0028] As Figure 4 and Figure 5 shown, the top of the cross plate body 31 is provided with a first longitudinal clamping groove 37, and the bottom of the cross plate body 31 is provided with a first longitudinal clamping strip 38.

[0029] The second longitudinal clamping groove 42 and the second longitudinal clamping strip 43 are respectively adapted to the first longitudinal clamping groove 37 and the first longitudinal clamping strip 38.

[0030] The spliced vertical plate body 41 is installed between the horizontal plate bodies 31 by engaging the vertical slot two 42 and the vertical strip two 43 corresponding to the longitudinal slot one 37 and the longitudinal strip one 38 provided outside the horizontal plate body 31 on its upper and lower sides respectively, so that the inner side of the vertical plate body 41 fits against the outside of the water wall main body 1. By using the fixing bolt two 45 to screw into the longitudinal strip one 38 through the fixing hole two 44 on the side of the upper vertical plate body 41 for fixation, it is convenient to install and fix the longitudinal partition 4 between the transverse partitions 3 and is convenient for disassembly and assembly, and is convenient for maintenance and replacement.

[0031] As Figure 3 and Figure 4 shown, a transverse strip 35 is fixedly connected to the left side of the horizontal plate body 31, and a transverse slot 36 corresponding to the transverse strip 35 is provided on the right side of the horizontal plate body 31.

[0032] The horizontal plate body 31 is horizontally installed by the cooperation of the transverse strip 35 and the transverse slot 36 provided outside the horizontal plate body 31, so that the transverse strip 35 on the side of the adjacent horizontal plate body 31 is correspondingly engaged into the transverse slot 36 on the side of another horizontal plate body 31 for limit fixation, thereby improving the stability of the installation.

[0033] As Figure 4 shown, the transverse strip 35, the transverse slot 36, the longitudinal slot one 37 and the longitudinal strip one 38 are all trapezoidally arranged.

[0034] By the trapezoidal arrangement of the transverse strip 35, the transverse slot 36, the longitudinal slot one 37 and the longitudinal strip one 38, a limit is provided when they are engaged with each other to ensure the stability of the connection.

[0035] As Figure 5 shown, a threaded hole corresponding to the fixing hole two 44 is provided on the side of the longitudinal strip one 38.

[0036] By providing a threaded hole corresponding to the fixing hole two 44 on the side of the longitudinal strip one 38, the position of the longitudinal partition 4 can be fixed by passing the fixing bolt two 45 through the fixing hole two 44 and connecting it into the longitudinal strip one 38.

[0037] As Figure 1 shown, both the horizontal plate body 31 and the vertical plate body 41 are attached to the outside of the water wall main body 1.

[0038] Since the inner sides of the horizontal plate body 31 and the vertical plate body 41 are both shaped to fit the water wall main body 1, it is ensured that they can be attached to the outside of the water wall main body 1. A multi-layer and multi-channel grid-shaped protection is formed by installing multiple transverse partitions 3 and longitudinal partitions 4 in the horizontal and vertical directions on the inner wall of the furnace, so that the high-speed flowing wall-attached material is decelerated on the surface of the water wall, effectively preventing the wear of the boiler water wall and preventing wear and leakage.

[0039] The working principle of the CFB boiler water-cooled wall mesh anti-wear grille device will be specifically described below.

[0040] As Figures 1 to 5 shown, the cross bars 21 are horizontally fixedly connected to the outside of the main water-cooled wall body 1 according to the distance of the horizontal plate bodies 31. By inserting the horizontal plate bodies 31 into the outside of the cross bars 21 through the slots 32 at the rear sides thereof, the horizontal plate bodies 31 are attached to the wall surface of the main water-cooled wall body 1. At this time, the positions of the first fixing holes 33 and the positioning holes 22 are aligned, and the horizontal plate bodies 31 are horizontally installed. The horizontal clamping strips 35 on the sides of adjacent horizontal plate bodies 31 are correspondingly clamped into the horizontal clamping grooves 36 on the side of another horizontal plate body 31 for limit fixation. The first fixing bolts 34 are screwed into the positioning holes 22 along the first fixing holes 33 for installation and fixation. By using the longitudinal clamping strips II 43 at the bottoms of the vertical plate bodies 41, the two vertical plate bodies 41 are clamped into the longitudinal clamping grooves II 42 at the tops of another vertical plate body 41 according to the distance between the horizontal plate bodies 31. At this time, the longitudinal clamping strips II 43 and the second fixing holes 44 on the sides of the vertical plate bodies 41 coincide. The second fixing bolts 45 are screwed into the second fixing holes 44 from the outside of the vertical plate bodies 41 and penetrate into the vertical plate bodies 41 for connection and fixation. Subsequently, the spliced vertical plate bodies 41 are installed between the horizontal plate bodies 31 by clamping the longitudinal clamping grooves II 42 and the longitudinal clamping strips II 43 corresponding to the longitudinal clamping grooves I 37 and the longitudinal clamping strips I 38 arranged outside the horizontal plate bodies 31 on the upper and lower sides thereof, so that the inner sides of the vertical plate bodies 41 are attached to the outside of the main water-cooled wall body 1. The second fixing bolts 45 are screwed into the threaded holes arranged on the sides of the longitudinal clamping strips I 38 along the second fixing holes 44 on the sides of the upper vertical plate bodies 41 for fixation, thus completing the overall installation. When a certain horizontal plate body 31 or vertical plate body 41 is damaged, it can be disassembled and replaced separately by disassembling the first fixing bolts 34 and the second fixing bolts 45 at the corresponding positions. The disassembly and replacement are relatively simple to improve the efficiency.

[0041] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, the modifications or improvements that do not depart from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A mesh anti-wear grille device for a CFB boiler water wall, comprising a water wall body (1), characterized in that: The front side of the water-cooled wall body (1) is laterally fixedly connected with a connecting rod (2), and a transverse partition (3) is movably installed outside the connecting rod (2), the connecting rod (2) includes a transverse rod (21) and a positioning hole (22) opened inside the transverse rod (21), the transverse partition (3) includes a transverse plate body (31), a slot (32) corresponding to the transverse rod (21) is opened on the rear side of the transverse plate body (31), and a fixing hole (33) corresponding to the position of the positioning hole (22) is opened on the top of the transverse plate body (31), and a fixing bolt (34) located in the positioning hole (22) is installed in the internal thread of the fixing hole (33), and a longitudinal partition (4) is longitudinally movably installed between the transverse partitions (3).

2. The mesh anti-wear grille device for water-cooled wall of CFB boiler according to claim 1, characterized in that: The longitudinal partition (4) comprises a vertical plate body (41), the top and bottom of the vertical plate body (41) are respectively provided with two longitudinal slots (42) and two longitudinal strips (43), and the side surface of the vertical plate body (41) is provided with two fixing holes (44) respectively penetrating the two longitudinal slots (42) and the two longitudinal strips (43), and the internal thread of the two fixing holes (44) is connected with two fixing bolts (45).

3. The mesh anti-wear grille device for water-cooled wall of CFB boiler according to claim 2 is characterized in that: A longitudinal clamping groove (37) is formed on the top of the transverse plate body (31), and a longitudinal clamping strip (38) is formed on the bottom of the transverse plate body (31).

4. The mesh anti-wear grille device for water-cooled wall of CFB boiler according to claim 3 is characterized in that: The second longitudinal card slot (42) and the second longitudinal card strip (43) are respectively matched with the first longitudinal card slot (37) and the first longitudinal card strip (38).

5. The mesh anti-wear grille device for water-cooled wall of CFB boiler according to claim 3 is characterized in that: A transverse clamping strip (35) is fixedly connected to the left side of the transverse plate body (31), and a transverse clamping groove (36) corresponding to the transverse clamping strip (35) is provided on the right side of the transverse plate body (31).

6. The mesh anti-wear grille device for water-cooled wall of CFB boiler according to claim 5, characterized in that: The transverse clamping strip (35), the transverse clamping slot (36), the longitudinal clamping slot 1 (37) and the longitudinal clamping strip 1 (38) are all arranged in a trapezoidal shape.

7. The mesh anti-wear grille device for water-cooled wall of CFB boiler according to claim 3, characterized in that: The side surface of the longitudinal clamping strip 1 (38) is provided with a threaded hole corresponding to the fixing hole 2 (44).

8. The mesh anti-wear grille device for water-cooled wall of CFB boiler according to claim 2, characterized in that: The horizontal plate body (31) and the vertical plate body (41) are both attached to the outer side of the water-cooled wall body (1).

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