A high-pressure flushing device for boiler air preheater

Abstract

This utility model proposes a high-pressure flushing device for boiler air preheaters, relating to the field of high-pressure flushing technology for boiler air preheaters. It includes a ground rail, mounting bracket, lead screw assembly, high-pressure pump, four-way pipe, solenoid valve, rotating upward flushing assembly, mounting groove, side flushing assembly, disc, and through hole. This application eliminates the need for manual high-pressure water guns to sequentially flush multiple air preheaters, while simultaneously allowing for effective flushing of different locations on the air preheaters. This significantly reduces the labor intensity of manual operation and provides stable support during the reciprocating flushing process, resulting in a better flushing process for boiler air preheaters.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure flushing technology for boiler air preheaters, and more specifically, to a high-pressure flushing device for boiler air preheaters. Background Technology

[0002] An air preheater is a heat exchange surface in the flue gas duct at the tail of the boiler that preheats the air entering the boiler to a certain temperature through internal heat exchange fins. It is a device used to improve the heat exchange performance of the boiler and reduce energy consumption. Air preheaters are prone to ash accumulation in the flue gas duct. When there is too much ash accumulation, the thermal conductivity and equipment performance will decrease. Power plants will clean the air preheaters regularly.

[0003] Existing power plants regularly perform manual cleaning of air preheaters, but manual cleaning is labor-intensive and has low automation and cleaning efficiency, so the cleaning effect of boiler air preheaters needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a high-pressure flushing device for boiler air preheaters.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A high-pressure flushing device for a boiler air preheater includes a ground rail, a mounting bracket, a lead screw assembly, a high-pressure pump, a four-way pipe, a solenoid valve, a rotary top flushing assembly, a mounting groove, a side flushing assembly, a disc, and a through hole.

[0007] The main body of the mounting bracket is in the shape of an inverted U and slides with two ground rails;

[0008] The lead screw assembly is fixed to the ground and connected to a mounting bracket;

[0009] The high-pressure pump is fixed on the mounting bracket, and the high-pressure pump is connected to the upper pipeline of the four-way pipe. Solenoid valves are installed on the remaining pipelines of the four-way pipe excluding the upper pipeline.

[0010] The rotating upward punch assembly connects to the lower pipe of the four-way pipe;

[0011] The mounting slots are symmetrically opened on the two inner sides of the mounting frame, and the mounting slots are equipped with side punching components that are connected to the two side pipes of the four-way pipe through connecting pipes, and one of the connecting pipes is connected to the rotating upper punching component.

[0012] A disc that slides in an annular manner with the rotating upward punching assembly is fixed between the two sets of side punching assemblies, and the disc has a through hole that allows high-pressure water to flow through.

[0013] Furthermore, the rotary flushing assembly includes a delivery pipe, a rotary joint, an upper mounting shell, a first flushing pipe, a first high-pressure nozzle, a gear transmission assembly, and an annular slider.

[0014] The delivery pipe connects to the lower pipe of the four-way pipe;

[0015] One end of the rotary joint is connected to the conveying pipe, and the other end of the rotary joint is connected to the inside of the upper mounting shell, which is cylindrical in shape, through a vertical pipe;

[0016] Several first flushing pipes are connected to the interior of the upper mounting housing and pass through the through hole, and a first high-pressure nozzle is provided at the end of the first flushing pipe;

[0017] The gear transmission assembly is fixed on one of the connecting pipes and is connected to the upper mounting housing;

[0018] The annular slider is fixed on the upper mounting shell, and the disc has an annular groove that matches the annular slider.

[0019] Furthermore, the side-flush assembly includes a side-mounted housing, a second flushing pipe, and a second high-pressure nozzle.

[0020] The side mounting shell is fixed in the mounting groove and is connected to the connecting pipe;

[0021] Several second flushing pipes are arranged along the height direction of the side mounting shell and are connected to the inside of the side mounting shell;

[0022] The second high-pressure nozzle is connected to the end of the second flushing pipe;

[0023] A disc is fixed between the two side mounting shells.

[0024] Furthermore, the mounting frame is symmetrically fixed with support frames, and each support frame is symmetrically provided with rollers.

[0025] Furthermore, limit blocks are respectively provided at both ends of the ground track.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] Compared to existing technologies, this application eliminates the need for manual high-pressure water jets to sequentially flush multiple air preheaters. It can effectively flush different locations of the air preheaters, significantly reducing the labor intensity of manual operation. Furthermore, it provides stable support during the reciprocating flushing process, resulting in a better flushing process for boiler air preheaters. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2This is a schematic diagram of the support frame installation.

[0030] Figure label:

[0031] 1. Ground rail; 2. Mounting bracket; 3. Lead screw assembly; 4. High-pressure pump; 5. Four-way pipe; 6. Solenoid valve; 7. Mounting slot; 8. Disc; 9. Through hole; 10. Rotary joint; 11. Conveying pipe; 12. Upper mounting shell; 13. First flushing pipe; 14. First high-pressure nozzle; 15. Gear transmission assembly; 16. Annular slider; 17. Side mounting shell; 18. Second flushing pipe; 19. Second high-pressure nozzle; 20. Support frame; 21. Roller. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0033] like Figure 1 and Figure 2 As shown, a high-pressure flushing device for a boiler air preheater includes a ground rail 1, a mounting bracket 2, a lead screw assembly 3, a high-pressure pump 4, a four-way pipe 5, a solenoid valve 6, a rotary upward flushing assembly, a mounting groove 7, a side flushing assembly, a disc 8, and a through hole 9.

[0034] The mounting bracket 2, which has an inverted U-shaped main body, slides in conjunction with two ground rails 1;

[0035] The lead screw assembly 3 is fixed on the ground and connected to the mounting bracket 2 (in order to limit the range of motion of the mounting bracket 2, the scheme is optimized by setting limit blocks at both ends of the ground rail 1).

[0036] The high-pressure pump 4 is fixed on the mounting bracket 2, and the high-pressure pump 4 is connected to the upper pipeline of the four-way pipe 5. Solenoid valves 6 are installed on the remaining pipelines of the four-way pipe 5 excluding the upper pipeline.

[0037] The rotating upward punch assembly is connected to the lower pipe of the four-way pipe 5;

[0038] Mounting slots 7 are symmetrically opened on the two inner sides of mounting bracket 2, and mounting slots 7 are provided with side punching components (connecting pipes are not labeled in the figure) that are connected to the two side pipes of four-way pipe 5 through connecting pipes, and one of the connecting pipes is connected to the rotating upper punching component.

[0039] The disc 8, which is in annular sliding cooperation with the rotating upward punching assembly, is fixed between the two sets of side punching assemblies, and the disc 8 is provided with a through hole 9 that allows high-pressure water flow from above to pass through.

[0040] Specific implementation of the embodiments of this utility model, such as Figure 1 As shown, the rotary flushing assembly includes a delivery pipe 10, a rotary joint 11, an upper mounting shell 12, a first flushing pipe 13, a first high-pressure nozzle 14, a gear transmission assembly 15, and an annular slider 16.

[0041] The delivery pipe 10 is connected to the lower pipe of the four-way pipe 5;

[0042] One end of the rotary joint 11 is connected to the conveying pipe 10, and the other end of the rotary joint 11 is connected to the interior of the upper mounting shell 12, which is cylindrical in shape, through a vertical pipe (the vertical pipe is shown in the figure but is not labeled).

[0043] A number of first flushing pipes 13 are connected to the interior of the upper mounting shell 12 and pass through the through hole 9, and a first high-pressure nozzle 14 is provided at the end of the first flushing pipe 13 (it should be noted that the first flushing pipes 13 are circumferentially distributed at the bottom of the upper mounting shell 12 and are spaced apart from the inner wall of the through hole 9 when rotating).

[0044] The gear transmission assembly 15 is fixed on one of the connecting pipes and is connected to the upper mounting housing 12.

[0045] The annular slider 16 is fixed on the upper mounting shell 12, and the disc 8 has an annular groove that mates with the annular slider 16 (the annular groove is not numbered in the figure).

[0046] Specific implementation of the embodiments of this utility model, such as Figure 1 As shown, the side flushing assembly includes a side mounting housing 17, a second flushing pipe 18, and a second high-pressure nozzle 19.

[0047] The side mounting shell 17 is fixed in the mounting groove 7 and is connected to the connecting pipe;

[0048] Several second flushing pipes 18 are arranged along the height direction of the side mounting shell 17 and are connected to the interior of the side mounting shell 17.

[0049] The second high-pressure nozzle 19 is connected to the end of the second flushing pipe 18;

[0050] A disc 8 is fixed between the two side mounting shells 17.

[0051] To improve the stability of the mounting frame 2 during its back-and-forth movement along the ground rail 1, further optimizations to the above-described embodiments are made, such as... Figure 2 As shown, support frames 20 are symmetrically fixed on the mounting frame 2, and each support frame 20 is symmetrically provided with rollers 21.

[0052] It should be noted that the lead screw assembly 3, high-pressure pump 4, solenoid valve 6, and gear transmission assembly 15 are all electrically connected to the controller, which is not shown in the figure.

[0053] The working process of this utility model:

[0054] First, several air preheaters that need high-pressure cleaning are arranged one after the other between two ground rails 1. It should be noted that after placement, the maximum installation height of the second flushing pipe 18 is matched with the height of the air preheater.

[0055] Then, the operator first controls the high-pressure pump 4 through the controller to inject water into the upper mounting shell 12 and the side mounting shell 17 through the four-way pipe 5. Then, the water flows out through the high-pressure nozzle to rinse the top and sides of the air preheater. On this basis, the controller controls the screw assembly 3 to operate, so that the mounting frame 2 can move back and forth along the ground rail 1 to perform high-pressure rinsing on other air preheaters in sequence. During the movement, the stability of the device can be improved by the support frame 20 and the rollers 21.

[0056] While the upper spray is rinsing, the gear transmission assembly 15 can be controlled by the controller to rotate the upper mounting shell 12, resulting in a better rinsing effect. The disc 8 can provide support during the rotation rinsing, and the rotation of the upper mounting shell 12 is made smoother by the cooperation of the annular slider 16 and the annular groove.

[0057] After high-pressure flushing of several air preheaters is completed, the air preheaters can be removed and replaced with a new batch of air preheaters.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-pressure flushing device for a boiler air preheater, characterized in that, It includes a ground rail (1), a mounting bracket (2), a lead screw assembly (3), a high-pressure pump (4), a four-way pipe (5), a solenoid valve (6), a rotary punch assembly, a mounting slot (7), a side punch assembly, a disc (8), and a through hole (9). The mounting bracket (2), which is in the shape of an inverted U, slides with two ground rails (1); The lead screw assembly (3) is fixed on the ground and connected to the mounting bracket (2); The high pressure pump (4) is fixed on the mounting bracket (2), and the high pressure pump (4) is connected to the upper pipeline of the four-way pipe (5). Solenoid valves (6) are installed on the remaining pipelines of the four-way pipe (5) excluding the upper pipeline. The rotating upward punch assembly is connected to the lower pipe of the four-way pipe (5); The mounting slots (7) are symmetrically opened on the two inner sides of the mounting frame (2), and the mounting slots (7) are provided with two side pipes connected to the four-way pipe (5) through connecting pipes, and one of the connecting pipes is connected to the rotating upper punch assembly. The disc (8) that is in annular sliding cooperation with the rotating upward punching assembly is fixed between the two sets of side punching assemblies, and the disc (8) is provided with a through hole (9) that allows high-pressure water flow from above to pass through.

2. The high-pressure flushing device for a boiler air preheater according to claim 1, characterized in that, The rotary flushing assembly includes a delivery pipe (10), a rotary joint (11), an upper mounting shell (12), a first flushing pipe (13), a first high-pressure nozzle (14), a gear transmission assembly (15), and an annular slider (16). The delivery pipe (10) is connected to the lower pipe of the four-way pipe (5); One end of the rotary joint (11) is connected to the conveying pipe (10), and the other end of the rotary joint (11) is connected to the interior of the upper mounting shell (12) whose main body is cylindrical through a vertical pipe; Several first flushing pipes (13) are connected to the interior of the upper mounting shell (12) and pass through the through hole (9), and a first high-pressure nozzle (14) is provided at the end of the first flushing pipe (13). The gear transmission assembly (15) is fixed on one of the connecting pipes and is connected to the upper mounting shell (12); The annular slider (16) is fixed on the upper mounting shell (12), and the disc (8) has an annular groove that matches the annular slider (16).

3. The high-pressure flushing device for a boiler air preheater according to claim 1, characterized in that, The side flushing assembly includes a side mounting housing (17), a second flushing pipe (18), and a second high-pressure nozzle (19). The side mounting shell (17) is fixed in the mounting groove (7), and the side mounting shell (17) is connected to the connecting pipe; Several second flushing pipes (18) are arranged along the height direction of the side mounting shell (17) and are connected to the inside of the side mounting shell (17); The second high-pressure nozzle (19) is connected to the end of the second flushing pipe (18); A disc (8) is fixed between the two side mounting shells (17).

4. A high-pressure flushing device for a boiler air preheater according to claim 1, characterized in that, The mounting frame (2) is symmetrically fixed with support frames (20), and each support frame (20) is symmetrically provided with rollers (21).

5. A high-pressure flushing device for a boiler air preheater according to claim 1, characterized in that, Limiting blocks are respectively installed at both ends of the ground track (1).

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