A boiler air preheater flushing device

Abstract

The utility model relates to a boiler air preheater flushing technical field especially relates to a boiler air preheater flushing device. The boiler air preheater flushing device includes: boiler air preheater body, two support long blocks, connecting assembly, sliding assembly, water tank, the bottom fixedly connected with a plurality of support legs of boiler air preheater body, the similar side fixedly connected with first connecting rod of two support long blocks, and the top middle part fixedly connected with electric push rod of support long block, and the drive end fixedly connected with containing long block of two electric push rods, and the similar side fixedly connected with second connecting rod of two containing long blocks, and the similar side inner wall fixedly connected with a plurality of high pressure nozzles of two containing long blocks. The utility model can adapt to the boiler air preheater body of different base height, solve the problem that the support height is fixed in related art and is difficult to adapt, greatly enhance the use flexibility, and the filter plate can be conveniently extracted and cleaned and replaced through the handle slot, reduce the maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of boiler air preheater flushing technology, and in particular to a boiler air preheater flushing device. Background Technology

[0002] An air preheater is a heat exchange device installed in the flue gas duct at the tail end of the boiler. It recovers the waste heat from the boiler's exhaust gas to heat the air entering the boiler, thereby improving boiler thermal efficiency and reducing fuel consumption. During boiler operation, dust, soot, and coking deposits easily accumulate on the heating surfaces of the air preheater. These impurities not only reduce the heat exchange efficiency of the air preheater and increase flue gas flow resistance, but may also cause equipment corrosion, affecting the safe and stable operation of the boiler. Therefore, it is necessary to use a flushing device to clean the heating surfaces of the air preheater with high-pressure water or cleaning fluid to remove impurities in a timely manner and ensure efficient operation of the equipment.

[0003] Most flushing devices move the support frame outside the air preheater and mount the nozzles on the frame in a covered structure. Water pressurized by a water pump flows through pipes and is sprayed at high pressure onto the heated surface through the nozzles to flush away impurities. However, some existing flushing supports have a fixed height. When facing air preheaters with high bases, the inability to adjust the height makes the device difficult to adapt to, significantly reducing the flexibility of use. At the same time, when the flushing water is filtered and recycled through filter plates, the filter plates accumulate impurities after long-term use and need to be cleaned. The disassembly process is cumbersome, time-consuming, and labor-intensive, which not only affects the flushing efficiency but also increases maintenance costs.

[0004] Therefore, it is necessary to provide a boiler air preheater flushing device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a boiler air preheater flushing device.

[0006] This utility model provides a boiler air preheater flushing device comprising: a boiler air preheater body, two supporting blocks, a connecting assembly, a sliding assembly, and a water tank. Multiple supporting legs are fixedly connected to the bottom end of the boiler air preheater body. A first connecting rod is fixedly connected to one side of each of the two supporting blocks. An electric push rod is fixedly connected to the middle of the top of each supporting block. A receiving block is fixedly connected to the drive end of each of the two electric push rods. A second connecting rod is fixedly connected to one side of each of the two receiving blocks. Multiple high-pressure nozzles are fixedly connected to the inner walls of one side of each of the two receiving blocks. A water pipe is fixedly connected inside each receiving block. A connecting assembly is installed at one end of the water pipe. A sliding assembly is installed at the top of each supporting block. A water tank is slidably connected to one side of each of the multiple supporting legs. A filter plate is slidably connected to the inner wall of the top of the water tank. A handle groove is provided on one side of the filter plate. A high-pressure pump is fixedly connected to one end of the water tank. A delivery pipe is fixedly connected to the output end of the high-pressure pump. A pressure monitoring gauge is installed on the outside of the delivery pipe. A two-way pipe is fixedly connected to the end of the delivery pipe furthest from the high-pressure pump.

[0007] Preferably, the connecting assembly includes a sealing ring, the outer side of which is fixedly connected to the inner wall of one end of the water pipe, and a threaded connecting pipe is fixedly connected to the axial center of the end of the water pipe where the sealing ring is installed.

[0008] Preferably, the sliding assembly includes two fixed posts, the bottom ends of the two fixed posts are fixedly connected to the top end of the support block, a support rod is slidably connected to the inner wall of the top end of the fixed post, and a sliding hole is opened on the inner wall of the fixed post.

[0009] Preferably, the second connecting rod is positioned directly above the first connecting rod.

[0010] Preferably, the input ends of the plurality of high-pressure nozzles are fixedly connected to the inner walls of the two water pipes on the same side, and the bottom end of the support block is equipped with a plurality of casters.

[0011] Preferably, the water tank is located directly below the boiler air preheater body.

[0012] Preferably, the top end of each pair of support rods is fixedly connected to the bottom end of the receiving long block, and the threaded connecting pipe is connected to the two-way pipe through a flexible hose.

[0013] Preferably, a limiting plate is fixedly connected to the bottom end of the support rod, and the outer side of the limiting plate is slidably connected to the inner wall of the sliding hole.

[0014] Compared with related technologies, the boiler air preheater flushing device provided by this utility model has the following advantages:

[0015] Beneficial effects:

[0016] Improved adaptability: With the help of an electric push rod to move the long block up and down, and with the support rod in the sliding component sliding in the sliding hole of the fixed column and the limit plate sliding synchronously, the height of the long block 6 can be flexibly adjusted, which can adapt to the boiler air preheater body with different base heights. This solves the problem of the difficulty in adapting the fixed height of the bracket in related technologies, and greatly enhances the flexibility of use.

[0017] High-efficiency flushing: The high-pressure pump pressurizes and supplies water, which is then transmitted through the delivery pipe and two-way pipe. The high-pressure water is sprayed out through the high-pressure nozzle, and the impact force effectively flushes away impurities on the heat exchange surface, ensuring the heat exchange efficiency of the air preheater and the stable operation of the boiler. The flushing effect is good and the efficiency is high.

[0018] Convenient water resource recycling: The flushing water is collected by the arc of the cylindrical surface of the air preheater and falls into the water tank 17 below. The filter plate in the water tank can filter impurities and realize the recycling of water resources. Moreover, the filter plate 18 can be easily pulled out for cleaning and replacement through the handle groove, which solves the problem of cumbersome filter plate cleaning in related technologies, reduces maintenance costs, and ensures the continuous and efficient operation of the device. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a boiler air preheater flushing device provided by this utility model;

[0020] Figure 2 for Figure 1 The diagram shows the structure of the supporting block.

[0021] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0022] Figure 4 for Figure 2 Enlarged view of point B in the image;

[0023] Figure 5 for Figure 2 Enlarged view of point C in the image.

[0024] The following are the labeling elements in the diagram: 1. Boiler air preheater body; 2. Support leg; 3. Support block; 4. First connecting rod; 5. Electric push rod; 6. Receiving block; 7. Second connecting rod; 8. High-pressure nozzle; 9. Water pipe; 10. Sealing ring; 11. Threaded connecting pipe; 12. Caster wheel; 13. Fixed column; 14. Support rod; 15. Sliding hole; 16. Limiting plate; 17. Water tank; 18. Filter plate; 19. Handle groove; 20. High-pressure pump; 21. Delivery pipe; 22. Pressure monitoring gauge; 23. Two-way pipe. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] Please see Figures 1 to 5 A boiler air preheater flushing device includes: a boiler air preheater body 1 and two supporting blocks 3. The boiler air preheater body 1 is the core component, and its bottom end is vertically fixedly connected to multiple supporting legs 2. These supporting legs 2 are evenly distributed to provide reliable support for the boiler air preheater body 1, enabling it to be stably installed in the working position. At the bottom of the device, two supporting blocks 3 are arranged horizontally. A first connecting rod 4 is fixedly connected to the adjacent side of the two supporting blocks 3. The first connecting rod 4 serves to connect and reinforce the two supporting blocks 3, ensuring the integrity of the support structure. An electric push rod 5 is fixedly connected to the middle of the top of the supporting blocks 3. The electric push rod 5 has an extendable and retractable drive end, and the drive ends of the two electric push rods 5 are synchronized. The two long blocks 6 are fixedly connected to each other. When the electric push rod 5 is working, it can drive the long blocks 6 to move up and down. A second connecting rod 7 is fixedly connected to the adjacent side of the two long blocks 6, and the second connecting rod 7 is directly above the first connecting rod 4. This layout makes the overall structure more symmetrical in the vertical direction. Multiple high-pressure nozzles 8 are fixedly connected to the inner wall of the adjacent side of the two long blocks 6. These high-pressure nozzles 8 are arranged at a certain interval to provide high-pressure water flow for subsequent rinsing operations. An installation space is set in advance inside the long blocks 6, and water pipes 9 are fixedly connected by embedding installation. The input ends of the multiple high-pressure nozzles 8 are fixedly connected to the inner wall of the adjacent side of the two water pipes 9, respectively, to ensure that the high-pressure water flow can be smoothly delivered to each high-pressure nozzle 8.

[0028] A connecting component is installed at one end of the water pipe 9. The connecting component includes a sealing ring 10, which is fixedly connected to the inner wall of one end of the water pipe 9 to effectively prevent water leakage. A threaded connecting pipe 11 is fixedly connected to the axis at the end of the water pipe 9 where the sealing ring 10 is installed, which facilitates subsequent connection with other pipelines. Multiple casters 12 are installed at the bottom end of the support block 3. These casters 12 allow the entire support structure to move flexibly, making it easy to transport and adjust the position of the device.

[0029] A sliding assembly is installed at the top of the supporting block 3. The sliding assembly includes two fixed posts 13, the bottom ends of which are fixedly connected to the top of the supporting block 3. A sliding cavity is machined on the inner wall of the top of the fixed post 13, and the top part of the support rod 14 can slide within the sliding cavity. The top of each pair of support rods 14 is fixedly connected to the bottom of the receiving block 6. When the receiving block 6 moves, it drives the support rod 14 to move synchronously. A sliding hole 15 is provided on the inner wall of the fixed post 13. The sliding hole 15 provides guidance and limit for the movement of the support rod 14. A limiting plate 16 is fixedly connected to the bottom of the support rod 14. The outside of the limiting plate 16 is slidably connected to the inner wall of the sliding hole 15. The limiting plate 16 can prevent the support rod 14 from detaching from the fixed post 13, ensuring the stable operation of the sliding assembly.

[0030] The water tank 17 is located directly below the boiler air preheater body 1, which allows for better collection of flushing water. A sliding groove is designed on the adjacent side of the multiple support legs 2, enabling the water tank 17 to slide smoothly and be easily removed. A filter plate 18 is slidably connected to the inner wall of the top of the water tank 17, providing a snug fit. The filter plate 18 filters the flushing water. A handle groove 19 is provided on one side of the filter plate 18 for easy removal and cleaning by the operator. A high-pressure pump 20 is fixedly connected to one end of the water tank 17, and a delivery pipe 21 is fixedly connected to the output end of the high-pressure pump 20. A pressure gauge 22 is installed on the outside of the delivery pipe 21 to monitor the water pressure within it. A two-way pipe 23 is fixedly connected to the end of the delivery pipe 21 furthest from the high-pressure pump 20. A threaded connecting pipe 11 is connected to the two-way pipe 23 via a flexible hose, thus ensuring the continuity of the entire water circuit and guaranteeing the recycling of the flushing water.

[0031] The working principle of the boiler air preheater flushing device provided by this utility model is as follows:

[0032] The figure shows the flushing device pushed to the outside of the boiler air preheater. When the boiler air preheater flushing device is working, firstly, when it is necessary to flush the boiler air preheater body 1, the electric push rod 5 is activated. The drive end of the electric push rod 5 extends or retracts, driving the receiving block 6 to move up and down. During the movement of the receiving block 6, the sliding component begins to work in coordination. The support rod 14 on the inner wall of the top of the fixed column 13 will slide in the sliding hole 15 of the fixed column 13 as the receiving block 6 moves. At the same time, the limiting plate 16 at the bottom of the support rod 14 also slides synchronously in the sliding hole 15, thereby ensuring the stability of the movement of the receiving block 6 and enabling the receiving block 6 to be accurately adjusted to a position that matches the height of the boiler air preheater body 1. Regardless of the height of the base of the boiler air preheater body 1, the subsequent flushing operation can be carried out smoothly in this way.

[0033] Next, the high-pressure pump 20 starts, and the water in the water tank 17 is transported through the delivery pipe 21 under the action of the high-pressure pump 20. The pressure monitoring gauge 22 on the delivery pipe 21 can monitor the water pressure in real time. The water passes through the two-way pipe 23, and then through the hose and threaded connection pipe 11 to be tightened. Then it comes into close contact with the sealing ring 10 to ensure a seal. Then the water is transferred to the water pipe 9. The water in the water pipe 9 is finally delivered to multiple high-pressure nozzles 8. The high-pressure nozzles 8 spray high-pressure water onto the heating surface of the boiler air preheater body 1. The impact force of the high-pressure water flow is used to flush and clean the dust, soot and coking material and other impurities accumulated on the heating surface, so that these impurities are removed from the heating surface, thereby restoring the heat exchange efficiency of the air preheater and ensuring the stable operation of the boiler.

[0034] During the rinsing process, the rinse water falls into the lower water tank 17. This is because the impurities washed down by the water flow, along with the water itself, are naturally drawn downwards by gravity, following the curvature of the cylindrical surface of the boiler air preheater body 1, and eventually fall into the water tank 17 located directly below, forming a recycling path. This allows the rinse water to be collected, filtered, and reused. The filter plate 18 on the inner wall of the top of the water tank 17 filters this water, trapping impurities on the filter plate 18. The filtered water remains in the water tank 17, achieving water resource recycling. When the filter plate 18... When there is a lot of accumulated impurities on filter plate 18, the operator can directly pull the filter plate 18 out of the top inner wall of the water tank 17 through the handle groove 19 on one side of the filter plate 18 for cleaning or replacement. The operation is simple and quick. After cleaning, the filter plate 18 can be slid back into the water tank 17 for continued use, ensuring the continuous and efficient operation of the entire flushing device. It can meet the flushing needs of the boiler air preheater body 1 at any time, maintain the good operating condition of the boiler, and avoid problems such as the accumulation of impurities on the heating surface of the air preheater affecting the boiler thermal efficiency and causing equipment corrosion.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A boiler air preheater flushing device, characterized in that, include: The boiler air preheater body (1) and two supporting blocks (3) are provided. Multiple supporting legs (2) are fixedly connected to the bottom end of the boiler air preheater body (1). A first connecting rod (4) is fixedly connected to the adjacent side of the two supporting blocks (3). An electric push rod (5) is fixedly connected to the top center of the supporting blocks (3). A receiving block (6) is fixedly connected to the driving end of the two electric push rods (5). A second connecting rod (7) is fixedly connected to the adjacent side of the two receiving blocks (6). Multiple high-pressure nozzles (8) are fixedly connected to the inner wall of the adjacent side of the two receiving blocks (6). A water pipe (9) is fixedly connected inside the receiving block (6). A connecting component is installed at one end of the water pipe (9); A sliding component is installed on the top of the supporting block (3); A water tank (17) is slidably connected to one side of multiple support legs (2). A filter plate (18) is slidably connected to the inner wall of the top of the water tank (17). A handle groove (19) is provided on one side of the filter plate (18). A high-pressure pump (20) is fixedly connected to one end of the water tank (17). A delivery pipe (21) is fixedly connected to the output end of the high-pressure pump (20). A pressure monitoring gauge (22) is installed on the outside of the delivery pipe (21). A two-way pipe (23) is fixedly connected to the end of the delivery pipe (21) away from the high-pressure pump (20).

2. The boiler air preheater flushing device according to claim 1, characterized in that, The connecting assembly includes a sealing ring (10), the outside of which is fixedly connected to the inner wall of one end of the water pipe (9), and a threaded connecting pipe (11) is fixedly connected to the axial center of the end of the water pipe (9) where the sealing ring (10) is installed.

3. A boiler air preheater flushing device according to claim 1, characterized in that, The sliding assembly includes two fixed columns (13), the bottom ends of the two fixed columns (13) are fixedly connected to the top end of the support block (3), a support rod (14) is slidably connected to the inner wall of the top end of the fixed column (13), and a sliding hole (15) is opened on the inner wall of the fixed column (13).

4. A boiler air preheater flushing device according to claim 1, characterized in that, The second connecting rod (7) is directly above the first connecting rod (4).

5. A boiler air preheater flushing device according to claim 1, characterized in that, The input ends of the multiple high-pressure nozzles (8) are fixedly connected to the inner walls of the two water pipes (9) on the same side, and multiple casters (12) are installed at the bottom of the support block (3).

6. A boiler air preheater flushing device according to claim 2, characterized in that, The water tank (17) is located directly below the boiler air preheater body (1).

7. A boiler air preheater flushing device according to claim 3, characterized in that, The top of each pair of support rods (14) is fixedly connected to the bottom of the receiving block (6), and the threaded connecting pipe (11) is connected to the two-way pipe (23) through a flexible hose.

8. A boiler air preheater flushing device according to claim 3, characterized in that, The bottom end of the support rod (14) is fixedly connected to the limiting plate (16), and the outside of the limiting plate (16) is slidably connected to the inner wall of the sliding hole (15).

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