GGH on-line cleaning device

Abstract

The utility model discloses a GGH on -line cleaning device, including heat exchanger main part, the one side top of heat exchanger main part is fixedly connected with the air inlet channel, the top one side of air inlet channel is fixedly connected with high temperature pump, the output of high temperature pump is linked with the horizontal pipe, and the inner wall of horizontal pipe is linked with the high temperature resistance electronic tee bend valve, the bottom both sides of horizontal pipe all are linked with the spray pipe, and the outer wall of two spray pipes all is through the top of air inlet channel, the input of high temperature pump is linked with the catheter. The utility model discloses the cooperation of setting's air inlet channel, water tank, high temperature pump, catheter, horizontal pipe, high temperature resistance electronic tee bend valve and spray pipe can utilize high pressure water flow and carry out the washing to the deposit and the strong adhesion of pollutant and can effectively wash and clean, can also humidify the pollutant simultaneously, so that the influence of air current is avoided again and the quality of filter screen cleaning can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas heat exchangers, and in particular to an online cleaning device for GGH. Background Technology

[0002] GGH (Gas-Gas Heater) is a key piece of equipment used in flue gas treatment systems in industrial facilities such as coal-fired power plants and chemical plants. Its main function is to exchange heat with the hot flue gas emitted from the boiler. The online cleaning device for GGH (Gas-Gas Heater) is a cleaning system used to maintain the heat exchange efficiency of GGH. It is mainly used in the flue gas treatment systems of industrial facilities such as thermal power plants and chemical plants. The existing public document is: 202420738721.1 An online cleaning device for desulfurization flue gas heat exchanger, including a heat exchanger body and an air inlet pipe fixedly inserted through one side of the heat exchanger body. A filter screen is fixedly connected inside the air inlet pipe. A collection shell with a top opening is fixedly inserted through the lower half of the air inlet pipe. Screws are vertically rotatably connected to both sides of the filter screen inside the air inlet pipe. The screws extend to the outside of the air inlet pipe, and a driving part is provided between the two screws. A cleaning part is provided inside the air inlet pipe. A top shell is fixedly connected to the top of the air inlet pipe, and a backflushing part is provided inside the top shell. This utility model relates to the technical field of heat exchangers. When the motor of this utility model is working, it drives the screw plate to move on the surface of the filter screen, scraping off the dust attached to the surface of the filter screen. At the same time, the nozzle sprays air towards the filter screen, and the airflow passes through the filter screen in the opposite direction, flushing out the dust stuck in the filter screen pores, thereby improving the cleaning effect of the filter screen.

[0003] Existing flue gas heat exchanger online cleaning devices, due to their scraping and reverse blowing cleaning methods, can only remove loose surface dust. They are difficult to completely remove hardened deposits (such as ammonium bisulfate crystals and sticky dirt), and have poor peeling effect on highly adhesive pollutants. They can only remove some dry dust, resulting in poor performance. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an online GGH cleaning device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A GGH online cleaning device includes a heat exchanger body. An air inlet channel is fixedly connected to the upper side of one side of the heat exchanger body. A high-temperature pump is fixedly connected to the top side of the air inlet channel. The output end of the high-temperature pump is connected to a horizontal pipe, and the inner wall of the horizontal pipe is connected to a high-temperature resistant electronic three-way valve. Spray pipes are connected to both sides of the bottom of the horizontal pipe, and the outer walls of the two spray pipes penetrate the top of the air inlet channel. The input end of the high-temperature pump is connected to a conduit, and the outer walls of the conduit penetrate the top and bottom of the air inlet channel, respectively. A water tank is fixedly connected to the bottom of the air inlet channel, and a filter screen is fixedly connected to the inner wall of the air inlet channel.

[0007] Preferably, the inner wall of the air intake channel is fixedly connected to a baffle that fits against the outer wall of the filter screen. The inner wall of the baffle is rotatably connected to a rotating plate via a pin. The upper and lower sides of the outer wall of the rotating plate are both fitted against the inner wall of the air intake channel. A servo motor is fixedly connected to the top of the air intake channel. The output end of the servo motor is fixedly connected to the top of the rotating plate. The output end of the servo motor is rotatably connected to the inner wall of the air intake channel via a high-temperature bearing.

[0008] Preferably, a partition is fixedly connected to the inner wall of the water tank, a drain pipe is connected to the lower side of one side of the water tank, and a water supply pipe is connected to the upper side of the side of the water tank away from the drain pipe.

[0009] Preferably, the inner walls of both the drain pipe and the water supply pipe are connected to control valves, and one side of each of the two spray pipes is connected to an inclined high-pressure nozzle.

[0010] Preferably, a first water guide groove is fixedly connected to one side of the outer wall of the filter screen and is fixedly connected to the bottom of the inner wall of the air intake channel. Two second water guide grooves are fixedly connected to the outer wall of the filter screen away from the first water guide groove, and the bottom of the two second water guide grooves is fixedly connected to the bottom of the inner wall of the air intake channel. The inner walls of the first water guide groove and the two second water guide grooves are all fixedly connected to conveying pipes, and the outer walls of the multiple conveying pipes all penetrate the bottom of the air intake channel.

[0011] Preferably, the tops of the first water guide channel and the two second water guide channels are all concave.

[0012] Preferably, the inner wall of the air intake channel is fixedly connected with multiple heat-conducting plates, and the lower part of each heat-conducting plate extends to the lower part of the inner side of the water tank.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. Through the combination of the set air intake channel, water tank, high temperature pump, duct, horizontal pipe, high temperature resistant electronic three-way valve and spray pipe, high pressure water flow can be used for flushing, so as to effectively wash and clean the sediment and highly adhesive pollutants. At the same time, the pollutants can be humidified to prevent the pollutants from being agitated again due to the airflow, thereby greatly improving the quality of filter cleaning.

[0015] 2. Through the coordination of the servo motor, water tank, baffle, rotating plate, first water guide channel and second water guide channel, zoned cleaning can be achieved during cleaning, thus ensuring that the flue gas can continue to circulate during cleaning, and at the same time, the wastewater generated during cleaning can be guided and collected, which facilitates the subsequent treatment work of the staff and brings convenience to the staff. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a GGH online cleaning device proposed in this utility model;

[0017] Figure 2 for Figure 1 Cross-sectional view of the central air intake passage and water tank;

[0018] Figure 3 for Figure 2 Schematic diagram of the structure of the intermediate water tank, air intake channel and second water guide channel;

[0019] Figure 4 for Figure 2 A schematic diagram of the central air intake passage, filter screen, and nozzle;

[0020] Figure 5 for Figure 2 Another structural diagram of the middle baffle and the rotating plate.

[0021] In the diagram: 1. Heat exchanger body; 2. Air inlet channel; 3. Water tank; 4. High-temperature pump; 5. Horizontal pipe; 6. High-temperature resistant electronic three-way valve; 7. Pipe; 8. Spray pipe; 9. Filter screen; 10. First water guide channel; 11. Second water guide channel; 12. Delivery pipe; 13. Baffle; 14. Drain pipe; 15. Baffle; 16. Rotating plate; 17. Heat conduction plate; 18. Water supply pipe; 19. Servo motor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1, referring to Figures 1 to 5A GGH online cleaning device includes a heat exchanger body 1. An air inlet channel 2 is fixedly connected to the upper side of one side of the heat exchanger body 1. A high-temperature pump 4 is fixedly connected to the top side of the air inlet channel 2. The output end of the high-temperature pump 4 is connected to a horizontal pipe 5, and the inner wall of the horizontal pipe 5 is connected to a high-temperature resistant electronic three-way valve 6. Spray pipes 8 are connected to both sides of the bottom of the horizontal pipe 5, and the outer walls of both spray pipes 8 penetrate the top of the air inlet channel 2. The input end of the high-temperature pump 4 is connected to a conduit 7, and the outer walls of the conduit 7 penetrate the top and bottom of the air inlet channel 2 respectively. A water tank 3 is fixedly connected to the bottom of the air inlet channel 2, and a filter screen 9 is fixedly connected to the inner wall of the air inlet channel 2. The models of the high-temperature pump 4 and the high-temperature resistant electronic three-way valve 6 are not limited, as long as they meet the usage requirements. The mesh size and material of the filter screen 9 are not limited, as long as they meet the usage requirements. The high-temperature pump body 4 can draw water from the water tank 3 through the conduit 7, then transport it through the horizontal pipe 5, and finally spray it out through the spray pipe 8 to clean the filter screen 9. The direction of water flow can be changed through the high-temperature resistant electronic three-way valve 6, and then the two spray pipes 8 can be used for zoned cleaning. It should be noted that a heat insulation plate should be installed between the high-temperature pump body 4 and the air inlet channel 2, so that the high-temperature pump body 4 will not be affected by high temperature. The installation method of the heat insulation plate is not limited, as long as it meets the usage requirements. This is only one possible implementation method. Other protective measures can also be adopted to meet the technical features of this case.

[0024] In this embodiment, a baffle 15 that fits against the outer wall of the filter screen 9 is fixedly connected to the inner wall of the air intake channel 2. A rotating plate 16 is rotatably connected to the inner wall of the baffle 15 via a pin. The upper and lower parts of the outer wall of the rotating plate 16 are both in contact with the inner wall of the air intake channel 2. A servo motor 19 is fixedly connected to the top of the air intake channel 2, and the output end of the servo motor 19 is fixedly connected to the top of the rotating plate 16. The output end of the servo motor 19 is rotatably connected to the inner wall of the air intake channel 2 via a high-temperature bearing. The inner wall of the water tank 3 is fixedly connected to... A partition 13 is connected to a drain pipe 14 on one side of the water tank 3, and a water supply pipe 18 is connected to the upper side of the water tank 3 away from the drain pipe 14. Control valves are connected to the inner walls of both the drain pipe 14 and the water supply pipe 18. High-pressure nozzles are inclined and connected to one side of each of the two spray pipes 8. A first water guide groove 10, which is fixedly connected to the bottom of the inner wall of the air intake channel 2, is fixedly connected to one side of the outer wall of the filter screen 9. Two second water guide grooves 11 are fixedly connected to the outer wall of the filter screen 9 away from the first water guide groove 10. The bottom of each water guide trough 11 is fixedly connected to the bottom of the inner wall of the air intake channel 2. The inner walls of the first water guide trough 10 and the two second water guide troughs 11 are fixedly connected to conveying pipes 12, and the outer walls of the multiple conveying pipes 12 penetrate the bottom of the air intake channel 2. The tops of the first water guide trough 10 and the two second water guide troughs 11 are concave. The inner wall of the air intake channel 2 is fixedly connected to multiple heat conduction plates 17, and the lower part of the multiple heat conduction plates 17 extends to the lower part of the inner side of the water tank 3. The model of the servo motor 19 is not limited, as long as it meets the usage requirements. It should be noted that a heat insulation plate should be installed between the servo motor 19 and the air intake channel 2, so that the servo motor 19 will not be affected by high temperature through the heat insulation plate. The installation method of the heat insulation plate is not limited, as long as it meets the usage requirements. This is only one possible implementation method. Other protective measures can also be adopted to meet the technical features of this case. The heat conduction plate 17 can realize heat conduction, thereby heating the cleaning water to ensure the cleaning quality of the water flow.

[0025] The working principle of this embodiment is as follows: During use, when cleaning is required, the operator delivers cleaning water to the inside of the water tank 3 through the water supply pipe 18. Preheating is then performed using the heat-conducting plate 17. The preheating time can be appropriately determined based on the amount of water and the specific temperature of the flue gas; this is not limited in this embodiment. Then, the servo motor 19 is activated, driving the rotating plate 16 to rotate. When the rotating plate 16 rotates 90 degrees, partition isolation is achieved. Subsequently, the high-temperature pump 4 is activated, drawing water from inside the water tank 3 through the conduit 7 and delivering it to the inside of the horizontal pipe 5. The operator then uses a high-temperature resistant... The high-temperature electronic three-way valve 6 adjusts the direction of water flow, and then the water is sprayed out through the nozzle 8 to clean the filter screen 9. At the same time, the water flow is guided through the first water guide channel 10 and the second water guide channel 11 and collected inside the water tank 3. Then, the servo motor 19 is controlled to rotate 180 degrees in the opposite direction, and the high-temperature electronic three-way valve 6 is controlled to change the direction of water flow, and the high-temperature pump 4 is turned on again to clean another area. After cleaning is completed, the high-temperature pump 4 is turned off, and the servo motor 19 is used to control the rotating plate 16 to rotate so that the rotating plate 16 is in a perpendicular state to the filter screen 9. At this time, the work is completed.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A GGH online cleaning device, comprising a heat exchanger body (1), characterized in that, An air inlet channel (2) is fixedly connected to one side of the heat exchanger body (1). A high-temperature pump (4) is fixedly connected to the top side of the air inlet channel (2). The output end of the high-temperature pump (4) is connected to a horizontal pipe (5). The inner wall of the horizontal pipe (5) is connected to a high-temperature resistant electronic three-way valve (6). Both sides of the bottom of the horizontal pipe (5) are connected to nozzles (8). The outer walls of the two nozzles (8) penetrate the top of the air inlet channel (2). The input end of the high-temperature pump (4) is connected to a conduit (7). The outer wall of the conduit (7) penetrates the top and bottom of the air inlet channel (2) respectively. A water tank (3) is fixedly connected to the bottom of the air inlet channel (2). A filter screen (9) is fixedly connected to the inner wall of the air inlet channel (2).

2. The GGH online cleaning device according to claim 1, characterized in that, The inner wall of the air intake channel (2) is fixedly connected to a baffle (15) that fits against the outer wall of the filter screen (9). The inner wall of the baffle (15) is rotatably connected to a rotating plate (16) via a pin. The upper and lower sides of the outer wall of the rotating plate (16) are both fitted against the inner wall of the air intake channel (2). The top of the air intake channel (2) is fixedly connected to a servo motor (19). The output end of the servo motor (19) is fixedly connected to the top of the rotating plate (16). The output end of the servo motor (19) is rotatably connected to the inner wall of the air intake channel (2) via a high-temperature bearing.

3. The GGH online cleaning device according to claim 1, characterized in that, The inner wall of the water tank (3) is fixedly connected to a partition (13), a drain pipe (14) is connected to the lower side of one side of the water tank (3), and a water supply pipe (18) is connected to the upper side of the water tank (3) away from the drain pipe (14).

4. The GGH online cleaning device according to claim 3, characterized in that, The inner walls of the drain pipe (14) and the water supply pipe (18) are connected to control valves, and one side of each of the two spray pipes (8) is connected to a high-pressure nozzle that is set at an angle.

5. The GGH online cleaning device according to claim 1, characterized in that, The filter screen (9) has a first water guide groove (10) fixedly connected to the bottom of the inner wall of the air intake channel (2) on one side of its outer wall. The filter screen (9) has two second water guide grooves (11) fixedly connected to the outer wall of the side away from the first water guide groove (10). The bottom of the two second water guide grooves (11) is fixedly connected to the bottom of the inner wall of the air intake channel (2). The inner walls of the first water guide groove (10) and the two second water guide grooves (11) are all fixedly connected to conveying pipes (12), and the outer walls of the multiple conveying pipes (12) all penetrate the bottom of the air intake channel (2).

6. The GGH online cleaning device according to claim 5, characterized in that, The tops of the first water guide channel (10) and the two second water guide channels (11) are all concave.

7. The GGH online cleaning device according to claim 1, characterized in that, The inner wall of the air intake channel (2) is fixedly connected with multiple heat-conducting plates (17), and the lower part of the multiple heat-conducting plates (17) extends to the lower part of the interior side of the water tank (3).

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