Air pre-heater cleaning device

Abstract

The utility model relates to the technical field of air pre-heater cleaning, in particular to an air pre-heater cleaning device which comprises a rotating seat, a first mounting plate is connected to the peripheral wall of the rotating seat, at least two high-pressure water pipes are fixedly connected to the plate face of one side of the first mounting plate at intervals, and high-pressure water nozzles are mounted on the high-pressure water pipes. The multiple high-pressure water nozzles are arranged at intervals, the high-pressure water nozzles on the two high-pressure water pipes are arranged in a staggered mode, one end of each high-pressure water pipe is connected with a water inlet hose, one side of the first mounting plate is fixedly connected with a second mounting plate, the plate face of one side of the second mounting plate is fixedly connected with at least two high-pressure air pipes, and the two high-pressure air pipes are arranged at intervals. High-pressure air nozzles are installed on the high-pressure air pipes, the high-pressure air nozzles on the two high-pressure air pipes are arranged in a staggered mode, one end of each high-pressure air pipe is connected with an air inlet hose, and the effects that the working efficiency of the cleaned air pre-heater is guaranteed, and pollution to the environment when the air pre-heater is cleaned is reduced are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of air preheater cleaning, and in particular to an air preheater cleaning device. Background Art

[0002] An air preheater (AIP), also known as an air preheater, is a preheating device that improves the boiler's heat exchange performance and reduces heat loss. Located in the flue at the rear of the boiler, the AIP transfers heat from the flue gas discharged from the flue through internal fins to the air entering the boiler. This improves the boiler's heat exchange performance, lowers the exhaust gas temperature, and reduces heat loss.

[0003] The air preheater is usually a rotary air preheater, which uses flue gas and air to alternately pass through the metal heating surface to heat the air. After long-term use, a large amount of dust will adhere to the heat exchange fins of the rotary air preheater, resulting in reduced heat exchange performance. The existing air preheater cleaning method is usually to use high-pressure water or gas to flush the surface of the heat exchange fins.

[0004] The above-mentioned existing technical solutions have the following defects: after using high-pressure water to flush the heat exchanger plates, the moisture remaining on the heat exchanger plates can easily reduce the working efficiency of the air preheater and even cause corrosion of the heat exchanger plates. When using high-pressure gas to clean the heat exchanger plates, a large amount of dust will be generated, which will pollute the environment and even endanger the health of the workers. Utility Model Content

[0005] In order to ensure the working efficiency of the air preheater after cleaning and reduce the pollution to the environment when cleaning the air preheater, the present application provides an air preheater cleaning device.

[0006] The above technical objectives of this application are achieved through the following technical solutions:

[0007] An air preheater cleaning device comprises a rotating seat fixedly connected to the top of the rotating shaft of a rotary air preheater, a first mounting plate being connected to the peripheral wall of the rotating seat, a high-pressure water pipe being fixedly connected to one side plate surface of the first mounting plate, at least two high-pressure water pipes being arranged at intervals, high-pressure water nozzles being installed on the high-pressure water pipe, a plurality of high-pressure water nozzles being arranged at intervals, and the high-pressure water nozzles on the two high-pressure water pipes being staggered, one end of the high-pressure water pipe being connected to a water inlet hose, a second mounting plate being fixedly connected to one side of the first mounting plate, a high-pressure air pipe being fixedly connected to one side plate surface of the second mounting plate, at least two high-pressure air pipes being arranged at intervals, high-pressure air nozzles being installed on the high-pressure air pipes, and the high-pressure air nozzles on the two high-pressure air pipes being staggered, and one end of the high-pressure air pipe being connected to an air inlet hose.

[0008] By adopting the above technical solution, the flushing area of ​​the cleaning device can be increased, and the dead angles of the high-pressure water nozzles set at intervals when flushing the heat exchanger plates can be reduced. As the heat exchanger plates rotate, the heat exchanger plates cleaned by the high-pressure water flow rotate to the bottom of the high-pressure air nozzles. The high-pressure air flow ejected by the high-pressure air nozzles will dry the surface of the heat exchanger plates, reduce the residual moisture on the surface of the heat exchanger plates, and ensure the heat exchange efficiency of the heat exchanger plates. The first mounting plate and the second mounting plate can reduce the splashing of dirt when cleaning the heat exchanger plates, and reduce the pollution to the air and the environment when cleaning the air preheater.

[0009] Optionally, a sliding water pipe is slidably provided on one side surface of the first mounting plate, the length direction of the sliding water pipe is parallel to the length direction of the high-pressure water pipe, and a plurality of sliding water nozzles are spaced apart on the sliding water pipe.

[0010] By adopting the above technical solution, the area of ​​the heat exchanger flushed by the cleaning device can be increased, the cleaning efficiency of the cleaning device on the section of the heat exchange plate away from the air preheater can be increased, and the cleaning efficiency of the cleaning device can be improved.

[0011] Optionally, a slide groove is fixedly connected to one side surface of the first mounting plate, the sliding water pipe is fixedly connected and slides in the slide groove, a sliding frame is fixedly connected to the sliding water pipe, an electric push rod is installed on the sliding frame, and one end of the electric push rod is fixedly connected to the first mounting plate.

[0012] By adopting the above-mentioned technical solution, the electric push rod can push the sliding frame to move back and forth on the first mounting plate, thereby driving the sliding water pipe to slide on the first mounting plate. By allowing the electric push rod to slide the sliding water pipe back and forth on the first mounting plate, the flushing area of ​​the sliding water nozzle on the sliding water pipe can be increased, reducing the cleaning dead corners when the cleaning device flushes the heat exchange plate, and improving the cleaning efficiency of the cleaning device.

[0013] Optionally, a second air pipe is fixedly connected to a plate surface on one side of the second mounting plate, a plurality of second air nozzles are arranged on the second air pipe at intervals, and the length of the second air pipe is shorter than that of the high-pressure air pipe.

[0014] By adopting the above technical solution, the area of ​​the heat exchanger dried by the cleaning device can be increased, the drying efficiency of the heat exchanger away from the air preheater can be increased, and the cleaning efficiency of the cleaning device can be improved.

[0015] Optionally, baffles are fixedly connected to both the first mounting plate and the second mounting plate.

[0016] By adopting the above technical solution, the splashing of sewage and dirt when cleaning the heat exchanger can be reduced, and the pollution to the air and the environment when cleaning the air preheater can be reduced.

[0017] Optionally, a flexible plate is fixedly connected to one side of the baffle.

[0018] By adopting the above technical solution, the gap between the baffle and the air preheater heat exchange plate can be reduced, the baffle's blocking effect on sewage and dirt splashed when cleaning the heat exchange plate can be increased, and the pollution to the air and environment when cleaning the air preheater can be reduced.

[0019] Optionally, the first mounting plate is rotatably connected to the rotating seat, and rollers are installed on both the first mounting plate and the second mounting plate.

[0020] By adopting the above technical solution, the number of installation steps for workers when installing the cleaning device is reduced, the installation of the cleaning device is facilitated, and the roller rolls along the heat exchange fins of the air preheater to ensure that the baffle and the flexible plate can block the splashing of sewage and dirt generated when cleaning the heat exchange fins, thereby reducing the pollution to the air and the environment when cleaning the air preheater.

[0021] Optionally, a telescopic rod is fixed to the top of the roller, and one end of the telescopic rod is connected to the first mounting plate or the second mounting plate.

[0022] By adopting the above technical solution, the distance and angle between the first mounting plate and the second mounting plate and the air preheater heat exchanger plate can be adjusted by adjusting the length of the telescopic rod, which is convenient for the staff to install the cleaning device and ensures that the baffle and the flexible plate can block the splash of sewage and dirt generated when cleaning the heat exchanger plate, thereby reducing the pollution to the air and the environment when cleaning the air preheater.

[0023] In summary, this application has the following technical effects:

[0024] 1. The first mounting plate, high-pressure water pipe, second mounting plate and high-pressure air pipe are provided to increase the flushing area of ​​the cleaning device. The high-pressure airflow ejected by the high-pressure air nozzle dries the surface of the heat exchanger fins, reduces the residual moisture on the surface of the heat exchanger fins, and ensures the heat exchange efficiency of the heat exchanger fins. The first mounting plate and the second mounting plate can reduce the splashing of dirt when cleaning the heat exchanger fins, reducing the pollution to the air and environment when cleaning the air preheater.

[0025] 2. By setting up the sliding water pipe, sliding frame and electric push rod, the flushing area of ​​the high-pressure water nozzle on the sliding water pipe can be increased, the cleaning dead angle when the cleaning device flushes the heat exchanger is reduced, and the cleaning efficiency of the cleaning device is improved;

[0026] 3. By setting up baffles and flexible plates, the splashing of sewage and dirt when cleaning the heat exchanger can be reduced, and the pollution to the air and environment when cleaning the air preheater can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the appearance structure diagram of this application;

[0028] Figure 2 This is a structural diagram of the application from another angle;

[0029] Figure 3 It is a cross-sectional structural diagram from another angle of this application.

[0030] Explanation of the accompanying drawings: 1. rotating seat; 2. first mounting plate; 3. high-pressure water pipe; 31. high-pressure water nozzle; 32. water inlet hose; 4. second mounting plate; 5. high-pressure air pipe; 51. high-pressure air nozzle; 52. air inlet hose; 6. sliding water pipe; 61. sliding water nozzle; 7. sliding frame; 71. electric push rod; 8. second air pipe; 81. second air nozzle; 9. baffle; 91. flexible plate; 10. roller; 11. telescopic rod. DETAILED DESCRIPTION

[0031] The present application is further described in detail below with reference to the accompanying drawings.

[0032] The present application discloses an air preheater cleaning device, referring to Figure 1 and Figure 2 The cleaning device includes a rotating base 1 fixed to the top of the rotating shaft of the rotary air preheater by bolts. The peripheral wall of the rotating base 1 is connected to a first mounting plate 2. The first mounting plate 2 is fan-shaped and has the same curvature as the air preheater. A high-pressure water pipe 3 is fixed to the plate surface of the first mounting plate 2 facing the heat exchanger fin of the air preheater by bolts. Two high-pressure water pipes 3 are arranged at intervals. A high-pressure water nozzle 31 is installed on the side of the high-pressure water pipe 3 facing the heat exchanger fin. A plurality of high-pressure water nozzles 31 are arranged at intervals along the length direction of the high-pressure water pipe 3, and the high-pressure water nozzles 31 on the two high-pressure water pipes 3 are staggered. The end of the high-pressure water pipe 3 away from the air preheater shaft is connected to the water inlet hose 32, and the side wall of one side of the first mounting plate 2 is fixed with the second mounting plate 4 by bolts. The plate surface of the second mounting plate 4 is fan-shaped and has the same curvature as the air preheater. The plate surface of the second mounting plate 4 facing the heat exchange plate of the air preheater is fixed with a high-pressure air pipe 5 by bolts. Two high-pressure air pipes 5 are arranged at intervals along the length direction of the second mounting plate 4. A high-pressure air nozzle 51 is installed on the side of the high-pressure air pipe 5 facing the heat exchange plate. There are multiple high-pressure air nozzles 51 at intervals along the length direction of the high-pressure air pipe 5, and the high-pressure air nozzles 51 on the two high-pressure air pipes 5 are staggered. The end of the high-pressure air pipe 5 away from the air preheater shaft is connected with an air inlet hose 52.

[0033] When using this cleaning device, the high-pressure water pipe 3 and the high-pressure air pipe 5 are connected to the high-pressure water source and the high-pressure air source respectively, and the heat exchange plate is rotated at the same time. The high-pressure water nozzles 31 installed on the two high-pressure water pipes 3 will flush the heat exchange plate from top to bottom. The high-speed water flow sprayed by the high-pressure water nozzles 31 staggered on the two high-pressure water pipes 3 will flush the surface of the heat exchange plate, which can increase the flushing area of ​​the cleaning device and reduce the dead angle of the heat exchange plate when the high-pressure water nozzles 31 set at intervals are flushed. As the heat exchange plate rotates, the heat exchange plate flushed by the high-pressure water flow rotates to the bottom of the high-pressure air nozzle 51, and the high-pressure air flow sprayed by the high-pressure air nozzle 51 will dry the surface of the heat exchange plate, reduce the residual moisture on the surface of the heat exchange plate, and ensure the heat exchange efficiency of the heat exchange plate. The first mounting plate 2 and the second mounting plate 4 can reduce the splashing of dirt when cleaning the heat exchange plate and reduce the pollution to the air and the environment when cleaning the air preheater.

[0034] Reference Figure 2 and Figure 3 A sliding water pipe 6 is provided on the side of the first mounting plate 2 that slides toward the heat exchanger fin. In this embodiment, the sliding water pipe 6 is a corrugated pipe. The sliding water pipe 6 and the high-pressure water pipe 3 are located on the same first mounting plate 2. Two sliding water pipes 6 are provided at intervals, and the length direction of the two sliding water pipes 6 is parallel to the length direction of the high-pressure water pipe 3. The end of the sliding water pipe 6 away from the air preheater shaft is connected to the water inlet hose 32. A plurality of sliding water nozzles 61 are provided at intervals on the two sliding water pipes 6, and the sliding water nozzles 61 on the two sliding water pipes 6 are staggered. When the present cleaning device is used, the area of ​​the heat exchanger away from the air preheater shaft is larger. The two sliding water pipes 6 can increase the area of ​​the heat exchanger flushed by the cleaning device, increase the cleaning efficiency of the cleaning device on the section of the heat exchanger away from the air preheater shaft, and improve the cleaning efficiency of the cleaning device.

[0035] Reference Figure 2 and Figure 3 The first mounting plate 2 has a slide fixedly connected to the plate surface facing the heat exchanger fin by bolts. Two slides are arranged at intervals. Two sliding water pipes 6 slide in the two slides respectively. A sliding frame 7 is fixed between the two sliding water pipes 6. The sliding frame 7 slides on the side walls of the two slides. An electric push rod 71 is installed on the sliding frame 7. The end of the electric push rod 71 away from the sliding frame 7 is fixed to the first mounting plate 2 by bolts. The length of the two sliding water pipes 6 is shorter than the high-pressure water pipe 3. The length of one sliding water pipe 6 away from the high-pressure water pipe 3 is shorter than the other sliding water pipe 6. When the cleaning device is used, the electric push rod 71 can push the sliding frame 7 to move back and forth in the slide, thereby driving the sliding water pipe 6 to slide on the first mounting plate 2. The reciprocating movement of the sliding water pipe 6 on the first mounting plate 2 by the electric push rod 71 can increase the flushing area of ​​the sliding water nozzle 61 on the sliding water pipe 6, reduce the cleaning dead angle when the cleaning device flushes the heat exchanger fin, and improve the cleaning efficiency of the cleaning device.

[0036] Reference Figure 2 and Figure 3 A second air pipe 8 is bolted to the surface of the second mounting plate 4 facing the air preheater heat exchanger fins. Multiple second air nozzles 81 are spaced apart on the second air pipe 8. The length of the second air pipe 8 is shorter than that of the high-pressure air pipe 5. When using this cleaning device, the area of ​​the heat exchanger fins away from the air preheater's rotating shaft is larger. The second air pipe 8 increases the area of ​​the heat exchanger that the cleaning device can dry, increasing the cleaning device's drying efficiency in this area away from the air preheater, and thus improving the cleaning efficiency of the cleaning device.

[0037] Reference Figure 2 and Figure 3 The edges of the first mounting plate 2 and the second mounting plate 4 facing the heat exchanger fins are both fixed with baffles 9 by bolts. When using the cleaning device, the baffles 9 can reduce the splashing of sewage and dirt when cleaning the heat exchanger fins, reducing the pollution to the air and environment when cleaning the air preheater.

[0038] Reference Figure 2 and Figure 3 The side of baffle 9 closest to the air preheater heat exchanger fins is bolted to a flexible plate 91. The side of flexible plate 91 away from baffle 9 abuts the air preheater heat exchanger fins. When using this cleaning device, flexible plate 91 can reduce the gap between baffle 9 and the air preheater heat exchanger fins, increasing the baffle 9's ability to block splashing sewage and dirt during heat exchanger fin cleaning, thereby reducing air and environmental pollution during air preheater cleaning.

[0039] Reference Figure 3 The first mounting plate 2 is rotatably connected to the rotating base 1. The first mounting plate 2 and the second mounting plate 4 are both mounted with rollers 10 at one end away from the rotating shaft of the air preheater. A plurality of rollers 10 are arranged at intervals along the edges of the first mounting plate 2 and the second mounting plate 4. When using the cleaning device, the rotating base 1 is fixed to the rotating shaft of the air preheater. The rollers 10 roll along the top of the heat exchange fins of the rotating air preheater, reducing the number of installation steps for the workers when installing the cleaning device and facilitating the installation of the cleaning device. The rollers 10 roll along the heat exchange fins of the air preheater to ensure that the baffle 9 and the flexible plate 91 can block the splashing of sewage and dirt generated when cleaning the heat exchange fins, thereby reducing the pollution to the air and the environment when cleaning the air preheater.

[0040] Reference Figure 3 A telescopic rod 11 is bolted to the top of the roller 10. The end of the telescopic rod 11 away from the roller 10 is connected to the first mounting plate 2 or the second mounting plate 4. When using this cleaning device, the distance and angle between the first mounting plate 2 and the second mounting plate 4 and the air preheater heat exchanger fins can be adjusted by adjusting the length of the telescopic rod 11, which facilitates the installation of the cleaning device by the staff and ensures that the baffle 9 and the flexible plate 91 can block the splashing of sewage and dirt generated when cleaning the heat exchanger fins, thereby reducing pollution to the air and environment when cleaning the air preheater.

[0041] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. An air preheater cleaning device, characterized in that: The cleaning device comprises a rotating seat (1) fixedly connected to the top of the rotating shaft of the rotary air preheater, a peripheral wall of the rotating seat (1) is connected to a first mounting plate (2), a high-pressure water pipe (3) is fixedly connected to a side plate surface of the first mounting plate (2), at least two high-pressure water pipes (3) are arranged at intervals, a high-pressure water nozzle (31) is installed on the high-pressure water pipe (3), a plurality of high-pressure water nozzles (31) are arranged at intervals, and the high-pressure water nozzles (31) on the two high-pressure water pipes (3) are staggered. One end of the high-pressure water pipe (3) is connected to a water inlet hose (32), one side of the first mounting plate (2) is fixedly connected to a second mounting plate (4), one side of the second mounting plate (4) is fixedly connected to a high-pressure air pipe (5), the high-pressure air pipe (5) is arranged at least two at intervals, high-pressure air nozzles (51) are installed on the high-pressure air pipe (5), and the high-pressure air nozzles (51) on the two high-pressure air pipes (5) are staggered, and one end of the high-pressure air pipe (5) is connected to an air inlet hose (52).

2. The air preheater cleaning device according to claim 1, characterized in that: A sliding water pipe (6) is slidably provided on one side of the first mounting plate (2), the length direction of the sliding water pipe (6) is parallel to the length direction of the high-pressure water pipe (3), and a plurality of sliding water nozzles (61) are spaced apart on the sliding water pipe (6).

3. The air preheater cleaning device according to claim 2, characterized in that: A slide groove is fixedly connected to one side surface of the first mounting plate (2), the sliding water pipe (6) is fixedly connected and slides in the slide groove, a sliding frame (7) is fixedly connected to the sliding water pipe (6), an electric push rod (71) is installed on the sliding frame (7), and one end of the electric push rod (71) is fixedly connected to the first mounting plate (2).

4. The air preheater cleaning device according to claim 1, characterized in that: A second air pipe (8) is fixedly connected to a plate surface on one side of the second mounting plate (4), and a plurality of second air nozzles (81) are arranged at intervals on the second air pipe (8). The length of the second air pipe (8) is shorter than that of the high-pressure air pipe (5).

5. The air preheater cleaning device according to claim 4, characterized in that: Baffles (9) are fixedly connected to both the first mounting plate (2) and the second mounting plate (4).

6. The air preheater cleaning device according to claim 5, characterized in that: A flexible plate (91) is fixedly connected to one side of the baffle (9).

7. The air preheater cleaning device according to claim 6, characterized in that: The first mounting plate (2) is rotatably connected to the rotating seat (1), and rollers (10) are installed on both the first mounting plate (2) and the second mounting plate (4).

8. The air preheater cleaning device according to claim 7, characterized in that: A telescopic rod (11) is fixedly connected to the top of the roller (10), and one end of the telescopic rod (11) is connected to the first mounting plate (2) or the second mounting plate (4).

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