Superheater with online ash removal structure

Abstract

The utility model relates to a superheater with an on-line ash removal structure, and belongs to the technical field of superheaters. Comprising multiple rows of coiled pipe superheaters, the multiple rows of coiled pipe superheaters are fixedly connected to the interior of a boiler flue cavity at equal intervals, a cleaning brush is movably placed between every two adjacent coiled pipe superheaters, every two adjacent cleaning brushes are transversely arranged in a staggered mode, and each cleaning brush comprises a barrel and a plurality of brushes. According to the utility model, the movable cleaning brush is arranged in the middle of the multiple rows of coiled pipe superheaters, so that the ash removal work can be effectively carried out on the coiled pipe superheaters. The rotating piece can drive the shaft rod to drive the cleaning brush to rotate, so that the cleaning effect is better, meanwhile, the driving piece drives the movable plate and the cleaning brush below the movable plate to move, and therefore the dust removal work of the multiple rows of coiled pipe superheaters is completed. And every two groups of adjacent cleaning brushes are transversely arranged in a staggered manner, so that flue gas can still pass through a gap between every two adjacent groups of cleaning brushes in the ash removal process of the cleaning brushes.

Description

Technical Field

[0001] The utility model relates to the technical field of superheaters, in particular to a superheater with an online ash cleaning structure. Background Art

[0002] During the process of producing steam in a waste heat boiler, the saturated steam temperature generated is about 180°C, which cannot meet the process requirements of the steam system. At this time, a superheater needs to be added to increase the steam temperature so as to meet the process requirements.

[0003] Existing superheaters usually arrange serpentine tubes in the flue of the boiler, and heat the passing flue gas by the high-temperature steam flowing in these serpentine tubes. However, since the flue gas contains dust and other solid impurities, these impurities are easily attached to the surface of the serpentine tubes. Over time, these attachments will gradually accumulate, resulting in a reduction in the heat transfer efficiency of the serpentine tubes, and further reducing the heating effect of the high-temperature steam on the flue gas. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a superheater with an online ash cleaning structure.

[0005] The technical solution of the utility model is as follows:

[0006] A superheater with an online ash cleaning structure includes multiple rows of serpentine tube superheaters, and the multiple rows of serpentine tube superheaters are fixedly connected at equal intervals inside the flue gas chamber of the boiler. A cleaning brush is movably placed between every two adjacent serpentine tube superheaters, and every two adjacent cleaning brushes are arranged horizontally in a staggered manner. The cleaning brush includes a cylinder body and several groups of brush hairs, and the several groups of brush hairs are fixedly connected to the outer wall of the cylinder body. An upper cover is fixed to the upper end of the cylinder body by bolts, and a shaft rod is fixedly connected to the upper end of the upper cover. Multiple groups of through grooves are opened on the upper surface of the flue gas chamber of the boiler, and the shaft rod is slidably connected inside the through grooves. A movable plate is slidably connected above the through grooves on the upper surface of the flue gas chamber of the boiler. A through hole is opened on the upper surface of the movable plate, and a bearing is fixedly connected inside the through hole. The shaft rod is fixedly connected inside the bearing. A rotating member is connected above the movable plate at the upper ends of the multiple groups of shaft rods. Side plates are fixedly connected to both the left and right sides of the movable plate. A box body is fixedly connected to the upper end of the flue gas chamber of the boiler. The lower surface of the box body is open, and side grooves are respectively opened through the lower ends of both the left and right sides of the box body. The side plates are slidably connected inside the side grooves. A driving member for driving the movable plate to move is connected above the movable plate.

[0007] Optionally, pulleys are rotatably connected to both the front and rear sides of the movable plate, and sliding grooves are respectively opened at the lower ends of the front and rear inner walls of the box body. The pulleys are slidably connected inside the sliding grooves.

[0008] Optionally, the first rotating member includes multiple sets of the first gears. The first gears are fixedly sleeved on the outer side of the shaft rod and above the movable plate. A first synchronous chain meshing with the first gears is commonly sleeved on the outer sides of multiple sets of the first gears in the same column. A second gear is fixedly sleeved on the outer side of the shaft rod at the frontmost side of each column and above the first gear. A second synchronous chain meshing with the second gears is commonly sleeved on the outer sides of the two second gears. The upper end of one set of the shaft rods is connected with a first reduction motor, and the reduction motor is fixed on the upper surface of the movable plate through a fixing bracket.

[0009] Optionally, the driving member includes a lead screw. The lead screw is rotatably connected inside the box body. One end of the lead screw penetrates through the box body and is connected with a forward and reverse reduction motor II. Two nut seats are threadedly sleeved on the outer side of the lead screw. A connecting rod is fixedly connected to the lower surface of the nut seat. The lower surfaces of the two connecting rods are commonly connected with a T-shaped seat, and the T-shaped seat is fixed on the upper surface of the movable plate through bolts.

[0010] Optionally, the diameter of the cylinder body is smaller than the distance between every two adjacent serpentine tube superheaters.

[0011] Optionally, the brush is made of stainless steel soft wire.

[0012] All the above optional technical solutions can be arbitrarily combined, and the present utility model does not elaborate on the structures after combination one by one.

[0013] By means of the above solution, the beneficial effects of the present utility model are as follows:

[0014] 1. By arranging a movable cleaning brush in the middle of multiple rows of serpentine tube superheaters, the present utility model can effectively clean the ash of the serpentine tube superheater. Among them, the rotating member can drive the shaft rod to drive the cleaning brush to rotate, making the cleaning effect better. At the same time, the driving member drives the movable plate and the cleaning brush below it to move, thereby completing the ash cleaning work of multiple rows of serpentine tube superheaters.

[0015] 2. Every two adjacent cleaning brushes are arranged horizontally in a staggered manner, which can ensure that during the ash cleaning process of the cleaning brush, the flue gas can still pass through the gap between two adjacent cleaning brushes. This can not only effectively clean the dust, but also minimize the impact of the cleaning brush on the flue gas flow, ensuring the smooth passage of the flue gas.

[0016] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly and implement it according to the content of the specification, the following takes the preferred embodiments of the present utility model and combines with the drawings to elaborate in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall external sectional view of the superheater with an on-line ash cleaning structure provided by the present utility model;

[0018] Figure 2 The top view sectional view of the superheater with an on-line ash cleaning structure provided by the present utility model;

[0019] Figure 3 The right view sectional view of the superheater with an on-line ash cleaning structure provided by the present utility model;

[0020] Figure 4 The exploded structure schematic diagram of the superheater with an on-line ash cleaning structure provided by the present utility model;

[0021] Figure 5 The sectional view of the cooperation between the boiler flue cavity and the serpentine tube superheater in the present utility model;

[0022] Figure 6 The structure schematic diagram of the cooperation between the cleaning brush, the movable plate and the rotating part in the present utility model;

[0023] Figure 7 The structure schematic diagram of the cooperation between some parts of the rotating part in the present utility model;

[0024] Figure 8 The exploded structure schematic diagram of the cleaning brush, the shaft rod and the movable plate in the present utility model;

[0025] Figure 9 The structure schematic diagram of the cooperation between the movable plate and the side plate in the present utility model;

[0026] Figure 10 The structure schematic diagram of the cooperation between the box body, the lead screw and the forward and reverse reduction motor two in the present utility model.

[0027] Reference numerals in the figure: 1. Serpentine tube superheater; 2. Boiler flue cavity; 21. Through groove; 3. Cleaning brush; 31. Cylinder body; 32. Brush; 33. Upper cover; 4. Shaft rod; 5. Movable plate; 51. Through hole; 52. Bearing; 53. Pulley; 6. Rotating part; 61. Gear one; 62. Synchronous chain one; 63. Gear two; 64. Synchronous chain two; 65. Reduction motor one; 651. Fixed frame; 7. Side plate; 8. Box body; 81. Side groove; 82. Sliding groove; 9. Driving part; 91. Lead screw; 92. Forward and reverse reduction motor two; 93. Nut seat; 931. Connecting rod; 94. T-shaped seat. Detailed implementation manners

[0028] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0029] Please refer to Figures 1-10, the utility model provides a superheater with an on-line ash cleaning structure, which includes multiple rows of serpentine tube superheaters 1. The multiple rows of serpentine tube superheaters 1 are fixedly connected at equal intervals inside the boiler flue cavity 2. A cleaning brush 3 is movably placed between every two adjacent serpentine tube superheaters 1. Every two adjacent cleaning brushes 3 are arranged horizontally in a staggered manner. The cleaning brush 3 includes a cylinder body 31 and several groups of brush hairs 32. The several groups of brush hairs 32 are fixedly connected to the outer wall of the cylinder body 31. An upper cover 33 is fixed to the upper end of the cylinder body 31 by bolts. A shaft rod 4 is fixedly connected to the upper end of the upper cover 33. Multiple groups of through slots 21 are opened on the upper surface of the boiler flue cavity 2. The shaft rod 4 is slidably connected inside the through slots 21. A movable plate 5 is slidably connected on the upper surface of the boiler flue cavity 2 and above the through slots 21. A through hole 51 is opened on the upper surface of the movable plate 5. A bearing 52 is fixedly connected inside the through hole 51. The shaft rod 4 is fixedly connected inside the bearing 52. The upper ends of multiple groups of shaft rods 4 and above the movable plate 5 are connected with a rotating member 6. Side plates 7 are fixedly connected to both the left and right sides of the movable plate 5. A box body 8 is fixedly connected to the upper end of the boiler flue cavity 2. The lower surface of the box body 8 is open. Side slots 81 are respectively opened through the lower ends of both the left and right sides of the box body 8. The side plates 7 are slidably connected inside the side slots 81. A driving member 9 for driving the movable plate 5 to move is connected above the movable plate 5.

[0030] In the utility model, by arranging a movable cleaning brush 3 in the middle of multiple rows of serpentine tube superheaters 1, the ash cleaning work of the serpentine tube superheaters 1 can be effectively carried out. Among them, the rotating member 6 can drive the shaft rod 4 to drive the cleaning brush 3 to rotate self, making the cleaning effect better. At the same time, the driving member 9 drives the movable plate 5 and the cleaning brush 3 below it to move, so as to complete the ash cleaning work of multiple rows of serpentine tube superheaters 1.

[0031] Specifically, when the movable plate 5 moves, it drives the side plates 7 on both sides to move synchronously. The purpose of the side plates 7 is to block the through slots 21 to ensure that the through slots 21 are always in a closed state during the movement of the movable plate 5, effectively preventing the soot in the boiler flue cavity 2 from escaping through the through slots 21.

[0032] Specifically, the cylinder body 31 and the upper cover 33 are fixed by bolts. When the cylinder body 31 or the brush hairs 32 are damaged, the bolt fixing method makes the subsequent disassembly and replacement process more convenient.

[0033] Specifically, every two adjacent cleaning brushes 3 are arranged horizontally in a staggered manner. Ensure that during the ash cleaning process of the cleaning brush 3, the flue gas can still pass through the gap between two adjacent cleaning brushes 3. This can not only effectively clean the dust, but also minimize the influence of the cleaning brush 3 on the flue gas flow, ensuring the smooth passage of the flue gas.

[0034] Further, pulleys 53 are rotatably connected to both the front and rear sides of the movable plate 5, and sliding grooves 82 are respectively formed at the lower ends of the front and rear inner walls of the box body 8. The pulleys 53 are slidably connected inside the sliding grooves 82.

[0035] Specifically, during the movement of the movable plate 5, the pulleys 53 are driven to slide inside the sliding grooves 82. The sliding grooves 82 limit the sliding path of the pulleys 53, so that the movable plate 5 can only slide along the path of the sliding grooves 82. At the same time, the self-rotation of the pulleys 53 makes the sliding of the movable plate 5 smoother and reduces the friction force.

[0036] Further, the rotating member 6 includes multiple sets of first gears 61. The first gears 61 are fixedly sleeved on the outer side of the shaft rod 4 and are located above the movable plate 5. A synchronous chain 62 meshing with them is commonly sleeved on the outside of multiple sets of first gears 61 in the same column. A second gear 63 is fixedly sleeved on the outer side of the shaft rod 4 at the frontmost side of each column and above the first gear 61. A synchronous chain 64 meshing with them is commonly sleeved on the outside of the two second gears 63. One end of one of the shaft rods 4 is connected with a first reduction motor 65. The first reduction motor 65 is fixed on the upper surface of the movable plate 5 through a fixing bracket 651.

[0037] Specifically, when it is necessary to drive the cleaning brush 3 to rotate, the first reduction motor 65 drives one of the shaft rods 4 to rotate. At this time, the second gear 63 on the outer side of one of the shaft rods 4 drives the other second gear 63 and its affiliated shaft rod 4 to rotate through the synchronous chain 64. Furthermore, the first gears 61 on the outer sides of these two shaft rods 4 drive the remaining groups of shaft rods 4 to rotate through the synchronous chain 62, so as to realize the synchronous rotation of multiple groups of shaft rods 4. Ensure the smooth and synchronous rotation of multiple groups of cleaning brushes 3, so that the cleaning brushes 3 can work efficiently.

[0038] Further, the driving member 9 includes a lead screw 91. The lead screw 91 is rotatably connected inside the box body 8. One end of the lead screw 91 penetrates through the box body 8 and is connected with a forward and reverse reduction motor two 92. Two nut seats 93 are threadedly sleeved on the outer side of the lead screw 91. A connecting rod 931 is fixedly connected to the lower surface of the nut seat 93. A T-shaped seat 94 is commonly connected to the lower surfaces of the two connecting rods 931. The T-shaped seat 94 is fixed on the upper surface of the movable plate 5 through bolts.

[0039] Specifically, during the dust cleaning process, the forward and reverse reduction motor two 92 drives the lead screw 91 to rotate. At this time, the two nut seats 93 on the outer side of the lead screw 91 move to one side at the same time. The nut seats 93 drive the movable plate 5 to move through the connecting rod 931 and the T-shaped seat 94. The forward and reverse reduction motor two 92 can realize the forward and reverse operation of the lead screw 91, thereby indirectly driving the cleaning brush 3 to move left and right reciprocally.

[0040] Further, the diameter of the cylinder body 31 is smaller than the distance between every two adjacent serpentine tube superheaters 1.

[0041] Specifically, it is necessary to ensure that the cylinder body 31 can smoothly pass between two adjacent sets of serpentine tube superheaters 1.

[0042] Furthermore, the brush 32 is made of stainless steel soft wire.

[0043] Specifically, the stainless steel soft wire can effectively clean the impurities attached to the outer side of the serpentine tube superheater 1. At the same time, due to its soft nature, it will not scratch the outer wall of the serpentine tube superheater 1. Secondly, the stainless steel soft wire has good high-temperature resistance and can adapt to high-temperature environments.

[0044] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A superheater with an online soot cleaning structure, characterized in that: It includes a multi-row serpentine tube superheater (1), and multiple rows of the serpentine tube superheaters (1) are fixedly connected at equal intervals inside the boiler flue cavity (2). A cleaning brush (3) is movably placed between every two adjacent serpentine tube superheaters (1). Every two adjacent cleaning brushes (3) are arranged horizontally in a staggered manner. The cleaning brush (3) includes a cylinder body (31) and several groups of brush hairs (32). The several groups of brush hairs (32) are fixedly connected to the outer wall of the cylinder body (31). An upper cover (33) is fixed to the upper end of the cylinder body (31) by bolts. A shaft rod (4) is fixedly connected to the upper end of the upper cover (33). Multiple through grooves (21) are formed in the upper surface of the boiler flue cavity (2). The shaft rod (4) is slidably connected inside the through grooves (21). An activity plate (5) is slidably connected to the upper surface of the boiler flue cavity (2) and above the through grooves (21). A through hole (51) is formed in the upper surface of the activity plate (5). A bearing (52) is fixedly connected inside the through hole (51). The shaft rod (4) is fixedly connected inside the bearing (52). The upper ends of multiple shaft rods (4) and above the activity plate (5) are connected with a rotating member (6). Side plates (7) are fixedly connected to both the left and right sides of the activity plate (5). A box body (8) is fixedly connected to the upper end of the boiler flue cavity (2). The lower surface of the box body (8) is open. Side grooves (81) are formed through both the left and right lower ends of the box body (8). The side plates (7) are slidably connected inside the side grooves (81). A driving member (9) for driving the activity plate (5) to move is connected above the activity plate (5).

2. The superheater with an on-line soot cleaning structure according to claim 1, characterized in that, Pulleys (53) are rotatably connected to both the front and rear sides of the activity plate (5). Chute grooves (82) are formed at the lower ends of the front and rear inner walls of the box body (8). The pulleys (53) are slidably connected inside the chute grooves (82).

3. A superheater with an on-line dust cleaning structure according to claim 1, characterized in that, The rotating member (6) includes multiple first gears (61). The first gears (61) are fixedly sleeved on the outer side of the shaft rod (4) and above the activity plate (5). A first synchronous chain (62) engaged with them is commonly sleeved on the outer sides of multiple first gears (61) in the same column. A second gear (63) is fixedly sleeved on the outer side of the shaft rod (4) at the frontmost side of each column and above the first gear (61). A second synchronous chain (64) engaged with them is commonly sleeved on the outer sides of the two second gears (63). A first reduction motor (65) is connected to the upper end of one of the shaft rods (4). The first reduction motor (65) is fixed to the upper surface of the activity plate (5) through a fixing frame (651).

4. The superheater with an online soot cleaning structure according to claim 1, wherein, The driving member (9) includes a lead screw (91) which is rotatably connected inside the box body (8). One end of the lead screw (91) penetrates through the box body (8) and is connected with a forward and reverse reduction motor two (92). Two groups of nut seats (93) are sleeved on the outer side of the lead screw (91) in a threaded manner. The lower surface of the nut seat (93) is fixedly connected with a connecting rod (931). The lower surfaces of the two groups of connecting rods (931) are jointly connected with a T-shaped seat (94). The T-shaped seat (94) is fixed on the upper surface of the movable plate (5) by bolts.

5. The superheater with an online soot cleaning structure according to claim 1, characterized in that, The diameter of the cylinder body (31) is smaller than the distance between every two adjacent serpentine tube superheaters (1).

6. The superheater with an on-line ash cleaning structure according to claim 1, characterized in that, The brush (32) is made of stainless steel soft wires.

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