Desulfurization flue corrosion prevention device for coal-fired power plant

Abstract

The utility model discloses a coal-fired power plant desulfurization flue corrosion prevention device which comprises a pipeline, the pipeline comprises an air inlet section, an arc-shaped section and an exhaust section, a cleaning assembly is installed at the position, located at the arc-shaped section, in the pipeline, the cleaning assembly comprises a driving roller rotationally connected with the pipeline, a plurality of sets of driven rollers are arranged on one side of the driving roller, and a plurality of sets of driven rollers are arranged on the other side of the driving roller. The outer side of the driving roller and the outer side of the driven roller are both connected with chain belts in an engaged mode, and cleaning plates are fixed to the outer sides of the chain belts. By arranging the cleaning assembly, in the using process of the pipeline elbow, a driving motor in the cleaning assembly drives a driving roller to rotate, the driving roller drives a chain belt to rotate along a driven roller, and in the rotating process of the driven roller, a cleaning plate can make contact with the side wall of an arc-shaped section; and through contact between the cleaning plate and the side wall of the arc-shaped section, corrosive substances adhered to the surface of the arc-shaped section can be scraped and cleaned, so that the adhesion amount is reduced, the corrosion speed of the side wall of the pipeline is prevented from being increased, and the service life of the pipeline is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-corrosion of desulfurization flue of coal-fired power plant, in particular to an anti-corrosion device for desulfurization flue of coal-fired power plant. Background Art

[0002] During the production process of coal-fired power plants today, flue gas is produced that pollutes the environment. The flue gas needs to be desulfurized before it can be discharged.

[0003] The existing coal-fired plant flue gas needs to be transported through pipes during the emission process. In order to meet the demand during the transportation process, multiple pipes need to be connected to each other, and pipe elbows are needed at the connection positions. During the flue gas transportation process, the flow direction of the flue gas changes by 90°, and the flue gas will impact the arc section of the pipe, resulting in a large amount of corrosive substances adhering to the inner wall of the arc section. The long-term accumulation of these substances can easily accelerate the corrosion rate of the pipe wall, thereby reducing the service life. Utility Model Content

[0004] The main purpose of the utility model is to provide a desulfurization flue anti-corrosion device for a coal-fired power plant.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A desulfurization flue anti-corrosion device for a coal-fired power plant comprises a pipeline, wherein the pipeline comprises an air intake section, an arc section and an exhaust section, a cleaning assembly is installed in the pipeline at the arc section, the cleaning assembly comprises an active roller rotatably connected to the pipeline, a plurality of groups of driven rollers are arranged on one side of the active roller, the outer sides of the active roller and the driven roller are meshedly connected with chain belts, a cleaning plate is fixed on the outer side of the chain belt, the edge of the cleaning plate abuts against the inner wall of the arc section, one end of the active roller extends to the outside of the pipeline, and the extended end of the active roller is connected to the output shaft of a driving motor, the driving motor is fixed to the outside of the pipeline, and the rotation direction of the active roller is the same as the flow direction of the flue gas.

[0007] Preferably, an empty slot is provided on the pipeline at the bottom end of the exhaust section, and a collecting box is fixed below the empty slot.

[0008] Preferably, an electromagnetic adsorption net is installed in the collection box, and the electromagnetic adsorption net is provided with mesh holes for filtering impurities.

[0009] Preferably, an electromagnetic seat is installed at the bottom end of the electromagnetic adsorption net, and a connecting seat for energizing the electromagnetic seat is installed on one side of the collection box.

[0010] Preferably, a support shaft is provided in the collection box at one side of the electromagnetic adsorption net, and the support shaft is rotatably connected to the collection box.

[0011] Preferably, a plurality of groups of eccentric blocks are equidistantly installed on the outer side of the support shaft, and there is an angle difference between the installation angles of each group of eccentric blocks.

[0012] Preferably, one end of the support shaft extends to the outside of the collection box, a rotating motor is fixed to one side of the collection box, and an output end of the rotating motor is fixedly connected to the support shaft.

[0013] Preferably, the outer sides of the air inlet section and the air outlet section are both installed with connecting plates, and the four corners of the connecting plates are provided with mounting holes.

[0014] The beneficial technical effects are:

[0015] 1. By setting up a cleaning component, during the use of the pipe elbow, the driving motor in the cleaning component can drive the active roller to rotate, and the active roller drives the chain belt to rotate along the driven roller. During the rotation of the driven roller, the cleaning plate can contact the side wall of the arc segment. Through the contact between the cleaning plate and the side wall of the arc segment, the corrosive substances adhering to the surface can be scraped and cleaned, thereby reducing the amount of adhesion, preventing the acceleration of the corrosion speed of the pipe side wall, and prolonging the service life of the pipe;

[0016] 2. By setting up an electromagnetic adsorption net, a collection box and an electromagnetic seat, the electromagnetic adsorption net can be installed in the collection box, and the electromagnetic seat is energized to generate magnetism. The corrosive substances scraped by the cleaning component are affected by the centrifugal force and contact the electromagnetic adsorption net. The electromagnetic adsorption net is energized to generate magnetism to adsorb these corrosive substances, while the smoke continues to be discharged. After the smoke is discharged, the electromagnetic seat is powered off, the electromagnetic adsorption net loses its magnetism, and the corrosive substances adsorbed at this time fall into the collection box;

[0017] 3. By setting a rotating motor, a supporting shaft and an eccentric block, after the smoke is discharged, the rotating motor can drive the eccentric block to rotate through the supporting shaft. During the rotation of the eccentric block, it can intermittently contact the electromagnetic adsorption net. Through the contact between the two, the speed of corrosive substances separating from the electromagnetic adsorption net can be accelerated, and the separation effect can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a preferred embodiment of a desulfurization flue anti-corrosion device for a coal-fired power plant according to the utility model;

[0019] Figure 2 It is a main cross-sectional view of a preferred embodiment of a desulfurization flue anticorrosion device for a coal-fired power plant according to the utility model;

[0020] Figure 3 It is a structural schematic diagram of a cleaning assembly in a preferred embodiment of a desulfurization flue anti-corrosion device for a coal-fired power plant according to the utility model;

[0021] Figure 4 The figure is a schematic diagram of the positional relationship among the electromagnetic adsorption net, the electromagnetic seat, the rotating motor, the supporting shaft and the eccentric block in a preferred embodiment of a desulfurization flue anti-corrosion device for a coal-fired power plant according to the utility model.

[0022] The following are the descriptions of the reference numerals:

[0023] 1. Pipeline; 101. Air inlet section; 102. Arc section; 103. Exhaust section; 2. Cleaning assembly; 201. Active roller; 202. Driven roller; 203. Chain belt; 204. Cleaning plate; 205. Driving motor; 3. Empty slot; 4. Electromagnetic adsorption net; 5. Collection box; 6. Electromagnetic seat; 7. Support shaft; 8. Eccentric block; 9. Rotating motor; 10. Connecting plate; 11. Mounting hole. DETAILED DESCRIPTION

[0024] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0025] like Figure 1-Figure 4 As shown, a desulfurization flue anti-corrosion device for a coal-fired power plant provided in this embodiment includes a pipeline 1, the pipeline 1 includes an air intake section 101, an arc section 102 and an exhaust section 103, a cleaning assembly 2 is installed at the arc section 102 in the pipeline 1, and the cleaning assembly 2 includes an active roller 201 connected to the pipeline 1 for rotation, the active roller 201 can drive the chain belt 203 to rotate, a plurality of groups of driven rollers 202 are arranged on one side of the active roller 201, the driven roller 202 can support the chain belt 203, and the outer sides of the active roller 201 and the driven roller 202 are meshed and connected with the chain belt 203. 3. The chain belt 203 can drive the cleaning plate 204 to rotate. The cleaning plate 204 is fixed on the outside of the chain belt 203. The cleaning plate 204 can clean the side wall of the arc segment 102. The edge of the cleaning plate 204 is against the inner wall of the arc segment 102. One end of the active roller 201 extends to the outside of the pipeline 1, and the extended end of the active roller 201 is connected to the output shaft of the driving motor 205, so that the driving motor 205 can drive the active roller 201 to rotate. The driving motor 205 is fixed on the outside of the pipeline 1, and the rotation direction of the active roller 201 is the same as the flow direction of the smoke.

[0026] like Figure 1-Figure 2 As shown, an empty slot 3 is provided on the pipeline 1 at the bottom end of the exhaust section 103 , so that the cleaned corrosive impurities can fall into the collection box 5 through the empty slot 3 , and the collection box 5 is fixed below the empty slot 3 .

[0027] like Figure 2 and Figure 4As shown, an electromagnetic adsorption net 4 is installed in the collection box 5. The electromagnetic adsorption net 4 can adsorb corrosive substances after being energized to generate magnetism, and mesh holes for filtering impurities are opened on the electromagnetic adsorption net 4, and the smoke continues to move through the mesh holes.

[0028] like Figure 2 and Figure 4 As shown, an electromagnetic seat 6 is installed at the bottom of the electromagnetic adsorption net 4, and the electromagnetic seat 6 can make the electromagnetic adsorption net 4 generate magnetism when energized. A connecting seat for energizing the electromagnetic seat 6 is installed on one side of the collection box 5.

[0029] like Figure 2 and Figure 4 As shown, a support shaft 7 is provided in the collection box 5 at one side of the electromagnetic adsorption net 4, so as to facilitate the rotation of the eccentric block through the support shaft 7, and the support shaft 7 is rotatably connected to the collection box 5.

[0030] like Figure 2 and Figure 4 As shown, multiple groups of eccentric blocks 8 are equidistantly installed outside the support shaft 7, and there is an angle difference in the installation angle of each group of eccentric blocks 8, which can cause the electromagnetic adsorption net 4 to generate a certain vibration through the contact between the eccentric blocks 8 and the electromagnetic adsorption net 4.

[0031] like Figure 1 and Figure 4 As shown, one end of the support shaft 7 extends to the outside of the collection box 5, a rotating motor 9 is fixed to one side of the collection box 5, and the output end of the rotating motor 9 is fixedly connected to the support shaft 7, so that the rotating motor 9 can drive the support shaft 7 to rotate.

[0032] like Figure 1-Figure 2 As shown, connecting plates 10 are installed on the outside of the air intake section 101 and the exhaust section 103, and mounting holes 11 are opened at the four corners of the connecting plate 10, so that the staff can use bolts to connect the pipeline 1 with the external delivery pipe through the mounting holes 11 on the connecting plate 10.

[0033] Working principle of the device: When the device is used, the staff uses bolts to connect the pipe 1 to the external delivery pipe through the mounting hole 11 on the connecting plate 10, and the smoke enters the air intake section 101 in the pipe 1 through the external delivery pipe, and then the smoke moves out of the pipe 1 through the air intake section 101, the arc section 102 and the exhaust section 103 to change direction;

[0034] During the flow process, the driving motor 205 in the cleaning component 2 drives the active roller 201 to rotate, and the active roller 201 drives the chain belt 203 to rotate along the driven roller 202. During the rotation process, the driven roller 202 can make the cleaning plate 204 contact with the side wall of the arc segment 102. The contact between the cleaning plate 204 and the side wall of the arc segment 102 can scrape and clean the corrosive substances adhering to the surface, thereby reducing the adhesion amount, preventing the corrosion speed of the side wall of the pipeline 1 from being accelerated, and improving the service life of the pipeline 1.

[0035] The electromagnetic adsorption net 4 is installed in the collection box 5, and is energized by the electromagnetic seat 6 to generate magnetism. The corrosive substances scraped by the cleaning component 2 enter the empty slot 3 under the influence of centrifugal force and contact the electromagnetic adsorption net 4. The electromagnetic adsorption net 4 is energized to generate magnetism to adsorb these corrosive substances, while the smoke continues to be discharged. After the smoke is discharged, the electromagnetic seat 6 is powered off, the electromagnetic adsorption net 4 loses its magnetism, and the corrosive substances adsorbed at this time fall into the collection box 5.

[0036] After the smoke is discharged, the rotating motor 9 drives the eccentric block 8 to rotate through the supporting shaft 7. During the rotation of the eccentric block 8, it can intermittently contact with the electromagnetic adsorption net 4. Through the contact between the two, the speed of corrosive substances separating from the electromagnetic adsorption net 4 can be accelerated, and the separation effect can be improved.

[0037] The above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A desulfurization flue anti-corrosion device for a coal-fired power plant, characterized in that: The invention comprises a pipeline (1), wherein the pipeline (1) comprises an air inlet section (101), an arc section (102) and an exhaust section (103); a cleaning assembly (2) is installed in the pipeline (1) at the arc section (102); the cleaning assembly (2) comprises an active roller (201) rotatably connected to the pipeline (1); a plurality of groups of driven rollers (202) are arranged on one side of the active roller (201); and the outer sides of the active roller (201) and the driven roller (202) are meshedly connected with a chain. A belt (203) is provided, a cleaning plate (204) is fixed on the outside of the chain belt (203), the edge of the cleaning plate (204) is in contact with the inner wall of the arc segment (102), one end of the active roller (201) extends to the outside of the pipe (1), and the extended end of the active roller (201) is connected to the output shaft of a driving motor (205), the driving motor (205) is fixed on the outside of the pipe (1), and the rotation direction of the active roller (201) is the same as the flow direction of the smoke.

2. A coal-fired power plant desulfurization flue anti-corrosion device according to claim 1, characterized in that: The pipeline (1) is provided with an empty slot (3) at the bottom end of the exhaust section (103), and a collection box (5) is fixed below the empty slot (3).

3. A coal-fired power plant desulfurization flue anti-corrosion device according to claim 2, characterized in that: An electromagnetic adsorption net (4) is installed in the collection box (5), and mesh holes for filtering impurities are provided on the electromagnetic adsorption net (4).

4. A coal-fired power plant desulfurization flue anti-corrosion device according to claim 3, characterized in that: An electromagnetic seat (6) is installed at the bottom end of the electromagnetic adsorption net (4), and a connecting seat for energizing the electromagnetic seat (6) is installed on one side of the collection box (5).

5. A coal-fired power plant desulfurization flue anti-corrosion device according to claim 4, characterized in that: A support shaft (7) is provided in the collection box (5) on one side of the electromagnetic adsorption net (4), and the support shaft (7) is rotatably connected to the collection box (5).

6. A coal-fired power plant desulfurization flue anti-corrosion device according to claim 5, characterized in that: A plurality of groups of eccentric blocks (8) are equidistantly installed on the outside of the support shaft (7), and there is an angle difference between the installation angles of each group of eccentric blocks (8).

7. A coal-fired power plant desulfurization flue anti-corrosion device according to claim 6, characterized in that: One end of the support shaft (7) extends to the outside of the collection box (5), a rotating motor (9) is fixed to one side of the collection box (5), and the output end of the rotating motor (9) is fixedly connected to the support shaft (7).

8. The anti-corrosion device for the desulfurization flue of a coal-fired power plant according to claim 6, characterized in that: Connecting plates (10) are installed on the outer sides of the air intake section (101) and the exhaust section (103), and mounting holes (11) are provided at four corners of the connecting plates (10).

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