Capacity increasing device of rotary air preheater

Abstract

The utility model relates to the field of rotary air preheaters, and discloses a rotary air preheater capacity increasing device which comprises a connecting box and a capacity increasing box, the top of the connecting box communicates with a heating box and a ventilation box, the inner wall of the connecting box is rotationally connected with a heating disc, and a rotating plate is rotationally mounted at the top of the capacity increasing box; the size specification of the bottom end of the rotating plate is matched with the size specification of the top of the expansion box, a limiting frame is fixedly connected to the surface of the rotating plate, a fixing frame is movably installed at the bottom end of the limiting frame, and one end of the expansion box communicates with one end of the heating box; the capacity expansion box is installed on the heating box, the top of the capacity expansion box is rotationally connected with the rotating plate, the limiting frame is installed at one end of the rotating plate, and the bottom end of the limiting frame is connected with the surface of the fixing frame on the inner wall of the capacity expansion box, so that after the rotating plate is opened, the heating disc on the inner wall of the capacity expansion box can be cleaned conveniently; and the influence of cleaning the heating disc on the air preheater is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of rotary air preheaters, and in particular to a capacity increasing device for a rotary air preheater. Background Art

[0002] There are two types of air preheaters widely used in power station boilers: tubular and rotary. The heat transfer method of tubular air preheaters is that heat is continuously transferred from flue gas to air through the tube wall, which is an indirect heat transfer method. Rotary air preheaters transfer heat in a regenerative manner. Flue gas and air flow alternately through the heating surface. When the flue gas flows through, heat is transferred from the flue gas to the heating surface, the temperature of the heating surface rises, and heat is accumulated. When air flows through again, the heating surface releases the accumulated heat to the air. When a conventional rotary air preheater is used, after the connecting box is installed stably, the top of the connecting box is connected to a heating box and a ventilation box, one end of the ventilation box is connected to normal air, and the heating box is connected to hot air, and the hot air enters the heating box. The inner wall of the connecting box is rotatably connected to a heating disk, and the heating disk is heated by means of the hot air in the heating box. The heated heating disk heats the air on the inner wall of the ventilation box after rotation.

[0003] With respect to the above-mentioned related technologies, the inventors believe that when using conventional rotary air preheaters, in order to ensure the heating effect of the heating box, the size of the connecting box is often enlarged to increase the capacity and ensure the contact area between the heated air and the heating disk. As a result, when the heating disk needs to be cleaned, the entire heating box needs to be disassembled, which makes the air preheater unusable when flushing, thus affecting the use effect of the air preheater.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that the preheater is difficult to put into use when it is cleaned, the present application provides a rotary air preheater capacity expansion device.

[0006] The rotary air preheater capacity expansion device provided in this application adopts the following technical solution:

[0007] A rotary air preheater capacity expansion device comprises a connecting box and an expansion box, the top of the connecting box is connected to a heating box and a ventilation box, and the inner wall of the connecting box is rotatably connected to a heating plate, a rotating plate is rotatably installed on the top of the expansion box, the size of the bottom end of the rotating plate is matched with the size of the top of the expansion box, the surface of the rotating plate is fixedly connected to a limit frame, the bottom end of the limit frame is movably installed with a fixed frame, one end of the expansion box is connected to one end of the heating box, the surface of the fixed frame is fixedly connected to the inner wall of the expansion box, and the size of the top of the fixed frame is matched with the size of the surface of the limit frame.

[0008] Preferably, two rotating frames are rotatably mounted on the surface of the rotating plate, and the two rotating frames are symmetrically distributed with the rotating plate as the axis. A telescopic rod is rotatably connected to the surface of the rotating frame, and one end of the telescopic rod is rotatably mounted on the surface of the heating box.

[0009] Preferably, two fixing bolts are clamped on the surface of the rotating plate, and the surface of the fixing bolts is threadedly connected to a limiting seat, and one end of the limiting seat is fixedly installed on the surface of the expansion box.

[0010] Preferably, a baffle is slidably connected between the expansion box and the heating box, the size of the baffle surface is compatible with the size of the inner wall of the expansion box, and an auxiliary roller is rotatably installed at the bottom end of the baffle, and the bottom end of the auxiliary roller is slidably connected to the top of the heating plate.

[0011] Preferably, two pull ropes are fixedly installed on the top of the baffle plate, and a winding rod is fixedly connected to the top of the pull rope. A motor is fixedly installed on one end of the winding rod by means of a transmission disk, and one end of the winding rod is rotatably connected to the top of the heating box.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] The cam is fixedly mounted on the top of the heating box, and a rotating plate is rotatably connected to the top of the heating box, and a limit frame is installed at one end of the rotating plate, and the bottom end of the limit frame is connected to the surface of the fixed frame on the inner wall of the heating box, so that after the rotating plate is opened, it is convenient to clean the heating plate on the inner wall of the heating box, and the influence of cleaning the heating plate on the air preheater is effectively reduced. A rotating frame is installed on the surface of the rotating plate, and a telescopic rod is rotatably connected to the surface of the rotating frame. One end of the telescopic rod is rotatably mounted on the surface of the heating box, so that after adjusting its own length with the help of the telescopic rod, the rotating frame is controlled to rotate the rotating plate, thereby controlling the opening and closing of the heating box, effectively reducing the manual operation amount. Two fixing bolts are clamped on the surface of the rotating plate, and the surface of the fixing bolt is threadedly connected to the limiting seat, and one end of the limiting seat is fixedly connected to the surface of the heating box, so that the rotating plate is fixed to the surface of the heating box with the help of the fixing bolt, so as to avoid the situation that the rotating plate is pushed by air and deviates when the heating box is in use; compared with the prior art, the convenience of cleaning the heating box is effectively improved.

[0014] 2. A baffle plate can also be installed between the expansion box and the heating box, and the bottom end of the baffle plate is rotatably connected to an auxiliary roller, and the bottom end of the auxiliary roller is slidably connected to the top of the heating plate, so that the expansion box and the heating box are shielded by the baffle plate, avoiding the hot air from the inner wall of the heating box leaking out when the inner wall of the expansion box is cleaned, and the friction between the baffle plate and the heating plate is reduced by means of the auxiliary roller, and a pull rope is installed on the top of the baffle plate, and a winding rod is installed on the top of the pull rope, and one end of the winding rod is fixedly connected to a motor by means of a transmission disk, so that the winding rod can be controlled to rotate by means of the motor, and the winding rod pulls the pull rope to pull up the baffle plate, so as to connect the heating box with the expansion box, so that the baffle plate can be removed after cleaning, to ensure the heating effect in the expansion box; effectively improve the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the rotary air preheater capacity expansion device of the application embodiment;

[0016] Figure 2 It is a schematic diagram of the expansion box structure of the application embodiment;

[0017] Figure 3 is a side view schematic diagram of the structure of an embodiment of the application;

[0018] Figure 4 It is a schematic diagram of the structure at location A of the application embodiment.

[0019] Explanation of the accompanying drawings: 1. Connection box; 2. Heating box; 3. Ventilation box; 4. Heating plate; 5. Expansion box; 6. Rotating plate; 7. Fixed frame; 8. Limit frame; 9. Rotating frame; 10. Telescopic rod; 11. Fixing bolt; 12. Limit seat; 13. Shielding plate; 14. Auxiliary roller; 15. Pull rope; 16. Winding rod; 17. Motor. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1 —4 Provide further details of this application.

[0021] The present application embodiment discloses a rotary air preheater capacity expansion device, referring to Figure 1 - Figure 2 , including a connecting box 1. When in use, after the connecting box 1 is installed and stably, the top of the connecting box 1 is connected to the heating box 2 and the ventilation box 3. One end of the ventilation box 3 is connected to normal air, and the heating box 2 is connected to the hot air, and the hot air enters the heating box 2. The inner wall of the connecting box 1 is rotatably connected with a heating disk 4, and the heating disk 4 is heated by means of the hot air in the heating box 2. The heated heating disk 4 heats the air on the inner wall of the ventilation box 3 after rotation, and the expansion box 5 is installed in the heating box 2. The top of the expansion box 5 is rotatably connected with a rotating plate 6, and a limiting frame 8 is installed at one end of the rotating plate 6. The bottom end of the limiting frame 8 is connected to the surface of the fixed frame 7 on the inner wall of the expansion box 5. After opening the rotating plate 6, it is convenient to clean the heating disk 4 on the inner wall of the expansion box 5, effectively reducing the impact of cleaning the heating disk 4 on the air preheater, thereby improving the convenience of cleaning the air preheater.

[0022] Reference Figure 2 A rotating frame 9 is installed on the surface of the rotating plate 6, and a telescopic rod 10 is rotatably connected to the surface of the rotating frame 9. One end of the telescopic rod 10 is rotatably installed with the surface of the heating box 2. After adjusting its own length with the help of the telescopic rod 10, the rotating frame 9 is controlled to rotate the rotating plate 6, thereby controlling the opening and closing of the expansion box 5, effectively reducing the amount of manual operation. Two fixing bolts 11 are clamped on the surface of the rotating plate 6, and the surface of the fixing bolts 11 is threadedly connected to a limiting seat 12. One end of the limiting seat 12 is fixedly connected to the surface of the expansion box 5. The rotating plate 6 is fixed to the surface of the expansion box 5 by means of the fixing bolts 11, thereby avoiding the situation where the rotating plate 6 is pushed by air and causes displacement when the air preheater is in use.

[0023] Reference Figure 3 - Figure 4The bottom end of the auxiliary roller 14 is slidably connected to the top of the heating plate 4, and the friction between the baffle plate 13 and the heating plate 4 is reduced by means of the auxiliary roller 14. A pull rope 15 is installed on the top of the baffle plate 13, and a winding rod 16 is installed on the top of the pull rope 15. One end of the winding rod 16 is fixedly connected to a motor 17 by means of a transmission disk. The winding rod 16 is controlled to rotate by means of the motor 17. The winding rod 16 pulls the pull rope 15 to pull up the baffle plate 13, connecting the heating box 2 with the expansion box 5, so that the baffle plate 13 is removed after cleaning to ensure the heating effect in the expansion box 5.

[0024] The implementation principle of the rotary air preheater capacity expansion device of the embodiment of the present application is as follows: the expansion box 5 is installed on the heating box 2, and the top of the expansion box 5 is rotatably connected to a rotating plate 6, one end of the rotating plate 6 is installed with a limit frame 8, and the bottom end of the limit frame 8 is connected to the surface of the fixed frame 7 on the inner wall of the expansion box 5, so that after the rotating plate 6 is opened, it is convenient to clean the heating plate 4 on the inner wall of the expansion box 5, and the influence of cleaning the heating plate 4 on the air preheater is effectively reduced. A rotating frame 9 is installed on the surface of the rotating plate 6, and a telescopic rod 10 is rotatably connected to the surface of the rotating frame 9. One end of the telescopic rod 10 The end is rotatably installed on the surface of the heating box 2, so that after adjusting its own length with the help of the telescopic rod 10, the rotating frame 9 is controlled to rotate the rotating plate 6, thereby controlling the opening and closing of the expansion box 5, effectively reducing the amount of manual operation. Two fixing bolts 11 are clamped on the surface of the rotating plate 6, and the surface of the fixing bolts 11 is threadedly connected to the limiting seat 12. One end of the limiting seat 12 is fixedly connected to the surface of the expansion box 5, so that the rotating plate 6 can be fixed to the surface of the expansion box 5 with the help of the fixing bolts 11, avoiding the situation where the rotating plate 6 is pushed by air and causes displacement when the air preheater is in use.

[0025] The bottom end of the auxiliary roller 14 is slidably connected to the top of the heating plate 4, so that the expansion box 5 and the heating box 2 can be shielded by the baffle plate 13 to avoid the hot air from the inner wall of the heating box 2 leaking out when the inner wall of the expansion box 5 is cleaned, and the friction between the baffle plate 13 and the heating plate 4 is reduced by means of the auxiliary roller 14. A pull rope 15 is installed on the top of the baffle plate 13, and a winding rod 16 is installed on the top of the pull rope 15. One end of the winding rod 16 is fixedly connected to the motor 17 by means of a transmission disk, so that the winding rod 16 can be controlled to rotate by means of the motor 17. The winding rod 16 pulls the pull rope 15 to pull up the baffle plate 13, so as to connect the heating box 2 with the expansion box 5, so that the baffle plate 13 can be removed after cleaning to ensure the heating effect in the expansion box 5.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rotary air preheater capacity expansion device, comprising a connection box (1) and a capacity expansion box (5), characterized in that: The top of the connection box (1) is connected to a heating box (2) and a ventilation box (3), and the inner wall of the connection box (1) is rotatably connected to a heating plate (4). The top of the expansion box (5) is rotatably mounted with a rotating plate (6), the size of the bottom end of the rotating plate (6) is compatible with the size of the top of the expansion box (5), the surface of the rotating plate (6) is fixedly connected to a limit frame (8), and the bottom end of the limit frame (8) is movably mounted with a fixed frame (7).

2. The rotary air preheater capacity increasing device according to claim 1, characterized in that: One end of the expansion box (5) is connected to one end of the heating box (2), the surface of the fixed frame (7) is fixedly connected to the inner wall of the expansion box (5), and the size specification of the top of the fixed frame (7) is compatible with the size specification of the surface of the limit frame (8).

3. The rotary air preheater capacity increasing device according to claim 1, characterized in that: Two rotating frames (9) are rotatably mounted on the surface of the rotating plate (6), and the two rotating frames (9) are symmetrically distributed with the rotating plate (6) as an axis. A telescopic rod (10) is rotatably connected to the surface of the rotating frame (9), and one end of the telescopic rod (10) is rotatably mounted on the surface of the heating box (2).

4. The rotary air preheater capacity increasing device according to claim 1, characterized in that: Two fixing bolts (11) are clamped on the surface of the rotating plate (6), and the surface of the fixing bolts (11) is threadedly connected to a limiting seat (12), and one end of the limiting seat (12) is fixedly installed on the surface of the expansion box (5).

5. The rotary air preheater capacity increasing device according to claim 1, characterized in that: A baffle plate (13) is slidably connected between the expansion box (5) and the heating box (2); the size of the surface of the baffle plate (13) matches the size of the inner wall of the expansion box (5); and an auxiliary roller (14) is rotatably mounted at the bottom end of the baffle plate (13); the bottom end of the auxiliary roller (14) is slidably connected to the top of the heating plate (4).

6. The rotary air preheater capacity increasing device according to claim 5, characterized in that: Two pull ropes (15) are fixedly installed on the top of the shielding plate (13), and a winding rod (16) is fixedly connected to the top of the pull rope (15). A motor (17) is fixedly installed on one end of the winding rod (16) by means of a transmission disk, and one end of the winding rod (16) is rotatably connected to the top of the heating box (2).

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