Ash removal device applied to flue of power plant

Abstract

The utility model discloses an ash cleaning device applied to a flue of a power plant, which relates to the technical field of power plant equipment and comprises a T-shaped connecting pipe, a fixing part, an ash collecting box, a hand valve, a vibrating part and a knocking block, the T-shaped connecting pipe comprises a transverse pipe and a vertical pipe, one end of the transverse pipe is connected with the horizontal flue, the other end of the transverse pipe is connected with the vertical pipe, the top end of the vertical pipe is connected with the ascending flue, and the bottom end of the vertical pipe is connected with the ash collecting box through a fixing part so that the ash collecting box can be detached. A hand valve is installed at the end, close to the dust collecting box, of the vertical pipe so that the end, close to the dust collecting box, of the vertical pipe can be sealed by closing the hand valve, a vibration part is further installed on the vertical pipe, and the vibration part is connected with a knocking block so that the knocking block can act on the vertical pipe and dust on the inner wall of the vertical pipe can be vibrated to fall into the dust collecting box. The device is simple in structure, automatic dust removal and dust collection of the flue are achieved in a vibration mode, the sealing effect is good, dust in the flue can be continuously cleaned, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of power plant equipment, in particular to a dust cleaning device applied to a flue of a power plant. Background Art

[0002] During the use of the flue in a power plant, a large amount of ash is accumulated between the horizontal flue and the ascending flue between the front ash hopper and the SCR reactor. Therefore, regular maintenance is required to remove the dust on the inner wall of the flue. The flue usually needs to be disassembled for cleaning, which is cumbersome and inconvenient, and has low efficiency.

[0003] To this end, Chinese patent CN217092905U provides an SCR flue gas denitrification and dust removal optimization device for thermal power plants. The device is equipped with a dust cleaning part, which can clean the dust between the horizontal flue and the ascending flue without disassembling the horizontal flue and the ascending flue. However, during the dust cleaning work, the device requires the staff to knock on the flue, and after the knocking is completed, the staff needs to push and pull the dust cleaning part repeatedly. This operation is time-consuming and labor-intensive, and increases the workload of the staff. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then proposes a dust cleaning device applied to the flue of a power plant.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A dust cleaning device used in a flue of a power plant comprises a T-shaped connecting pipe, a fixing part, an ash collecting box, a hand valve, a vibrating part and a knocking block; the T-shaped connecting pipe comprises a horizontal pipe and a vertical pipe, one end of the horizontal pipe is connected to the horizontal flue, the other end of the horizontal pipe is connected to the vertical pipe, the top end of the vertical pipe is connected to the ascending flue, the bottom end of the vertical pipe is connected to the ash collecting box through the fixing part so that the ash collecting box can be detached, a hand valve is installed at one end of the vertical pipe close to the ash collecting box so that closing the hand valve can seal the end of the vertical pipe close to the ash collecting box, a vibrating part is also installed on the vertical pipe, and the vibrating part is connected to the knocking block so that the knocking block acts on the vertical pipe and causes the dust on the inner wall of the vertical pipe to be shaken off into the ash collecting box.

[0007] Furthermore, the fixing part includes an upper internal thread seat, a lower internal thread seat and a connecting bolt; the upper internal thread seat is arranged on the vertical pipe, the lower internal thread seat is arranged on the ash collecting box, and the upper internal thread seat and the lower internal thread seat are connected by the connecting bolt.

[0008] Furthermore, the ash collecting box includes a bottom box and a sealing rubber pad; a sealing rubber pad is arranged on the bottom box, the sealing rubber pad is used to contact with the bottom of the vertical pipe and is provided with a lower internal threaded seat.

[0009] Furthermore, the size of the bottom box is larger than the size of the vertical pipe to improve the sealing effect of the vertical pipe.

[0010] Furthermore, the ash collecting box also includes a sealing tube, which is connected to the bottom box, and the sealing tube is adapted to the inner diameter of the vertical tube and extends into the vertical tube to improve the sealing effect.

[0011] Furthermore, the vibration part includes a mounting seat, a spring, a fixing frame and a telescopic reciprocating motor; there are two mounting seats and they are arranged on the outer wall of the vertical tube, and a group of springs are arranged on each of the two mounting seats, and a fixing frame is installed between the two groups of springs, and the fixing frame is provided with a telescopic reciprocating motor, and the telescopic reciprocating motor is connected to a knocking block.

[0012] Furthermore, a dust screen is provided at one end of the vertical pipe close to the ascending flue to improve the dust blocking effect of the device.

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

[0014] The utility model is provided with a T-shaped connecting pipe, a fixing part, an ash collecting box, a hand valve, a vibrating part and a knocking block; and realizes automatic cleaning of the flue by means of vibration; the operation of the vibrating part drives the knocking block to knock the vertical pipe, during which the hand valve remains open, and the vertical pipe causes resonance in the ascending flue through knocking, thereby causing dust on the upper ascending flue and the inner wall of the vertical pipe to be shaken off and finally collected by the ash collecting box. When a certain amount of dust is collected in the ash collecting box, the hand valve is closed and the fixing part is loosened, at which time the dust transfer and processing operation in the ash collecting box can be completed, and due to the closure of the hand valve, there will be no problem of smoke leakage, and continuous cleaning of the dust in the flue can be achieved, which has better use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the ash collecting box;

[0017] Figure 3 This is a schematic diagram of the installation of the dust screen;

[0018] Among them: 1. T-type connecting pipe; 11. horizontal pipe; 12. vertical pipe; 2. vibration part; 21. mounting seat; 22. spring; 23. fixing frame; 24. telescopic reciprocating motor; 3. knocking block; 4. hand valve; 5. dust collecting box; 51. bottom box; 52. sealing rubber pad; 53. sealing pipe; 6. fixing part; 61. upper internal thread seat; 62. lower internal thread seat; 63. connecting bolt; 7. dust screen. 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. The utility model is further described in combination with the drawings and embodiments:

[0020] See attached Figure 1 As shown, a dust cleaning device applied to the flue of a power plant comprises a T-shaped connecting pipe 1, a fixing part 6, an ash collecting box 5, a hand valve 4, a vibrating part 2 and a knocking block 3; wherein the T-shaped connecting pipe 1 comprises a horizontal pipe 11 and a vertical pipe 12, one end of the horizontal pipe 11 is connected to the horizontal flue, the other end of the horizontal pipe 11 is connected to the vertical pipe 12, the top end of the vertical pipe 12 is connected to the ascending flue, the bottom end of the vertical pipe 12 is connected to the ash collecting box 5 through the fixing part 6 so that the ash collecting box 5 can be disassembled, a hand valve 4 is installed at one end of the vertical pipe 12 close to the ash collecting box 5 so that closing the hand valve 4 can seal one end of the vertical pipe 12 close to the ash collecting box 5, a vibrating part 2 is also installed on the vertical pipe 12, and the vibrating part 2 is connected to the knocking block 3 so that the knocking block 3 acts on the vertical pipe 12 and causes the dust on the inner wall of the vertical pipe 12 to be shaken off into the ash collecting box 5.

[0021] The device has a simple structure. During the specific implementation, the cleaning device adopts intermittent motion and works every 2 hours or 3 hours. The working time can be controlled within 10 minutes. Specifically, the vibration part 2 drives the knocking block 3 to knock on the vertical pipe 12. During this process, the hand valve 4 remains open, and the vertical pipe 12 causes the ascending flue to resonate after being knocked, so that the dust on the upper ascending flue and the inner wall of the vertical pipe 12 is vibrated off and finally collected by the ash collecting box 5. When a certain amount of dust is collected in the ash collecting box 5, the hand valve 4 is closed and the fixing part 6 is loosened. At this time, the transfer and processing operation of the dust in the ash collecting box 5 can be completed, and due to the closure of the hand valve 4, there will be no problem of smoke leakage.

[0022] For details, please refer to the attached Figure 1 As shown, the fixing part 6 includes an upper internal thread seat 61, a lower internal thread seat 62 and a connecting bolt 63; the upper internal thread seat 61 is arranged on the vertical pipe 12, the lower internal thread seat 62 is arranged on the ash collecting box 5, and the upper internal thread seat 61 and the lower internal thread seat 62 are connected by a connecting bolt 63.

[0023] For details, please refer to the attached Figure 2As shown, the dust collecting box 5 includes a bottom box 51, a sealing rubber pad 52 and a sealing tube 53; the size of the bottom box 51 is larger than the size of the vertical pipe 12 and a sealing rubber pad 52 is arranged thereon, the sealing rubber pad 52 is used to contact the bottom of the vertical pipe 12 and a lower internal threaded seat 62 is arranged thereon, and the bottom box 51 is connected with a sealing tube 53, which is adapted to the inner diameter of the vertical pipe 12 and extends into the vertical pipe 12.

[0024] For details, please refer to the attached Figure 1 As shown, the vibration part 2 includes a mounting seat 21, a spring 22, a fixing frame 23 and a telescopic reciprocating motor 24; there are two mounting seats 21 and they are arranged on the outer wall of the vertical pipe 12, and a group of springs 22 are arranged on the two mounting seats 21, and a fixing frame 23 is installed between the two groups of springs 22, and the fixing frame 23 is provided with a telescopic reciprocating motor 24, and the telescopic reciprocating motor 24 is connected to the knocking block 3.

[0025] In order to improve the dust-blocking effect of the device and prevent excessive smoke from entering the ascending flue, refer to the attached Figure 3 As shown, a dust screen 7 is provided at one end of the vertical pipe 12 close to the ascending flue.

[0026] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A dust cleaning device used in a flue of a power plant, characterized in that: It comprises a T-shaped connecting pipe (1), a fixing part (6), an ash collecting box (5), a hand valve (4), a vibrating part (2) and a knocking block (3); The T-shaped connecting pipe (1) comprises a horizontal pipe (11) and a vertical pipe (12), one end of the horizontal pipe (11) is connected to the horizontal flue, the other end of the horizontal pipe (11) is connected to the vertical pipe (12), the top end of the vertical pipe (12) is connected to the ascending flue, and the bottom end of the vertical pipe (12) is connected to the ash collecting box (5) through a fixing part (6) so that the ash collecting box (5) can be disassembled; A hand valve (4) is installed at one end of the vertical pipe (12) close to the ash collecting box (5) so that the hand valve (4) can be closed to seal the end of the vertical pipe (12) close to the ash collecting box (5); A vibrating part (2) is also installed on the vertical pipe (12), and the vibrating part (2) is connected to a knocking block (3) so that the knocking block (3) acts on the vertical pipe (12) and causes dust on the inner wall of the vertical pipe (12) to be shaken off into the dust collecting box (5).

2. The dust cleaning device for a flue gas duct of a power plant according to claim 1, characterized in that: The fixing portion (6) comprises an upper internal thread seat (61), a lower internal thread seat (62) and a connecting bolt (63); The upper internal thread seat (61) is arranged on the vertical pipe (12), the lower internal thread seat (62) is arranged on the dust collecting box (5), and the upper internal thread seat (61) and the lower internal thread seat (62) are connected by a connecting bolt (63).

3. The dust cleaning device for a flue gas duct of a power plant according to claim 2, characterized in that: The dust collecting box (5) comprises a bottom box (51) and a sealing rubber pad (52); A sealing rubber pad (52) is arranged on the bottom box (51), and the sealing rubber pad (52) is used to contact the bottom of the vertical pipe (12) and is provided with a lower internal thread seat (62).

4. The dust cleaning device for a flue gas duct of a power plant according to claim 3, characterized in that: The size of the bottom box (51) is larger than the size of the vertical pipe (12).

5. The dust cleaning device for a flue gas duct of a power plant according to claim 3, characterized in that: The ash collecting box (5) further comprises a sealing tube (53), the sealing tube (53) being connected to the bottom box (51), the sealing tube (53) being adapted to the inner diameter of the vertical tube (12) and extending into the vertical tube (12).

6. The dust cleaning device for a flue gas duct of a power plant according to claim 1, characterized in that: The vibration part (2) comprises a mounting seat (21), a spring (22), a fixing frame (23) and a telescopic reciprocating motor (24); There are two mounting seats (21) arranged on the outer wall of the vertical pipe (12), and each of the two mounting seats (21) is provided with a group of springs (22). A fixing frame (23) is installed between the two groups of springs (22), and a telescopic reciprocating motor (24) is provided on the fixing frame (23). The telescopic reciprocating motor (24) is connected to a knocking block (3).

7. The dust cleaning device for a flue gas duct of a power plant according to claim 1, characterized in that: A dust screen (7) is provided at one end of the vertical pipe (12) close to the ascending flue.

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