A tool for cleaning the inside of boiler heat exchange tubes

Abstract

This utility model provides a tool for cleaning the internal ash of boiler heat exchange tubes, relating to the field of heat exchange tube ash cleaning technology. It includes a fixed frame and a ash cleaning assembly. The ash cleaning assembly is placed at the bottom of the fixed frame and includes a rotating rod rotatably connected to the fixed frame. A flexible steel wire rope is driven and connected to the rotating rod, and a top cover is fixedly connected to the flexible steel wire rope. A rotating frame is slidably connected to the bottom of the top cover. A spiral blade is fixedly connected inside the rotating frame, and a rubber rod is slidably connected to the bottom of the rotating frame. A cleaning disc is slidably connected to the rubber rod. This utility model, through the flexible transmission and buffering of the flexible steel wire rope, enables the ash cleaning assembly to automatically adjust its posture according to the curvature of the bend. It both removes accumulated ash from the pipe wall by rotating the spiral blade and using water flow to spray and adhere to the pipe wall, and utilizes dynamic water pressure balance and inertial buffering to avoid excessive scouring and damage to the pipe wall by high-speed water flow. This solves the problem in the prior art where existing technologies may damage the pipe when passing through bends.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange tube cleaning technology, and in particular to a tool for cleaning the inside of boiler heat exchange tubes. Background Technology

[0002] Boilers, as important heat energy conversion equipment, are widely used in various industries such as power generation, industrial processing, and district heating. During actual operation, ash produced by fuel combustion gradually accumulates inside the heat exchange tubes, forming a dense ash layer. Therefore, regularly cleaning the inside of the boiler's heat exchange tubes is a necessary measure to ensure the efficient and safe operation of the boiler.

[0003] However, in the existing technology, although high-pressure water jet cleaning tools have strong cleaning capabilities, at bends, the water flow is affected by the pipe bending, and the jet direction is difficult to control. In some areas, the water flow scouring force is weakened and the accumulated dust cannot be completely removed, while in other areas, the water flow impact angle is improper, causing excessive scouring of the pipe wall, forming dents or corrosion points. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a tool for cleaning the inside of boiler heat exchange tubes.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a tool for cleaning the inside of boiler heat exchange tubes, comprising:

[0006] Fixed frame;

[0007] A dust removal assembly is placed at the bottom of a fixed frame. The dust removal assembly includes a rotating rod rotatably connected to the fixed frame, a flexible steel wire rope drivingly connected to the rotating rod, a top cover fixedly connected to the flexible steel wire rope, a rotating frame slidably connected to the bottom of the top cover, a spiral blade fixedly connected inside the rotating frame, a rubber rod slidably connected to the bottom of the rotating frame, and a cleaning disc slidably connected to the rubber rod.

[0008] In a preferred embodiment, a spring is fixedly connected to the cleaning tray, a connecting rod is fixedly connected to the spring, and the side of the connecting rod away from the spring is fixedly connected to the top cover.

[0009] The above technical solution involves connecting the cleaning tray to the top cover during use.

[0010] In a preferred embodiment, the rotating frame has an opening, and a liquid ejection hole is fixedly connected to the opening on the rotating frame.

[0011] Using the above technical solution: when in use, the liquid passes through the rotating frame which is set as an inclined plane, which will increase the rotation speed of the rotating frame.

[0012] In a preferred embodiment, a fixed shaft is fixedly connected to the helical blade, and the fixed shaft is fixedly connected inside the rotating frame.

[0013] The above technical solution is adopted: when in use, a fixed shaft is fixed on the spiral blade, which makes it easy to install the spiral blade in the rotating frame. The height of the spiral blade in the rotating frame is higher than the liquid throwing hole.

[0014] In a preferred embodiment, a lever is fixedly connected to the rubber rod, and the lever is slidably connected to the bottom of the rotating frame.

[0015] Using the above technical solution: In use, the lever is designed so that when encountering a curved section of the pipe, the rubber rod sliding on the cleaning disc shifts, causing one side of the rotating frame to slide out of the fixed frame.

[0016] In a preferred embodiment, a rubber block is fixedly connected to the rubber rod.

[0017] The above technical solution involves fixing rubber blocks to the rubber rod to increase the contact area between the rubber rod and the inner wall of the pipe.

[0018] In a preferred embodiment, the flexible steel wire rope is slidably connected to the top cover.

[0019] The above technical solution is adopted: a flexible steel wire rope is slidably connected to the top cover, and the top cover has an opening that matches the flexible steel wire rope, so that the flexible steel wire rope can slide in it.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0021] When this invention is in operation, the water pipe is connected to the inner wall of the fixed frame. The water pressure drives the rotating frame to move, allowing it to flexibly deform with the bends in the pipe. Simultaneously, the spiral blades supported by the fixed shaft inside the rotating frame rotate at high speed due to the impact of the water flow and the accelerated design of the inclined surface of the liquid ejection hole, generating directional disturbance eddies to enhance the cleaning effect. When the cleaning component enters the pipe bend, the rubber rod and rubber block are squeezed and undergo elastic deformation, driving the lever to create a gap at the connection between the rotating frame and the top cover. The water flow instantly rushes out, reducing the water pressure inside the rotating frame. In conjunction with the spring-linked cleaning disc, the radial spacing is adaptively adjusted. Under the flexible transmission and buffering of the flexible steel wire rope, the cleaning component automatically adjusts its posture according to the curvature of the bend. It not only peels off the accumulated ash by the rotation of the spiral blades and the ejection of water flow against the pipe wall, but also uses the dynamic balance of water pressure and inertial buffering to avoid excessive scouring and damage to the pipe wall by the high-speed water flow, thus solving the problem in the prior art that the pipe may be damaged when passing through the bend. Attached Figure Description

[0022] Figure 1 This utility model provides an overall structural schematic diagram of a boiler heat exchange tube internal cleaning tool.

[0023] Figure 2 A schematic diagram showing the position of the rubber rod of a boiler heat exchanger tube cleaning tool provided by this utility model.

[0024] Figure 3 This utility model provides a schematic diagram of the disassembled structure of the fixed frame and rotating frame of a boiler heat exchanger tube internal cleaning tool.

[0025] Figure 4 A schematic diagram of the spiral blade position of a boiler heat exchanger tube internal cleaning tool provided by this utility model.

[0026] Figure 5 This utility model provides a tool for cleaning the inside of boiler heat exchange tubes. Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0027] Legend:

[0028] 1. Fixed frame;

[0029] 2. Dust removal assembly; 21. Rotating rod; 22. Flexible steel wire rope; 23. Rotating frame; 24. Spiral blade; 25. Fixed shaft; 26. Liquid ejection hole; 27. Cleaning tray; 28. Rubber rod; 29. ​​Rubber block; 210. Toggle lever; 211. Top cover;

[0030] 3. Spring;

[0031] 4. Connecting rod. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] A tool for cleaning the inside of boiler heat exchanger tubes, comprising:

[0034] Fixed frame 1;

[0035] The dust removal assembly 2 is placed at the bottom of the fixed frame 1. The dust removal assembly 2 includes a rotating rod 21 rotatably connected to the fixed frame 1, a flexible steel wire rope 22 being driven connected to the rotating rod 21, a top cover 211 being fixedly connected to the flexible steel wire rope 22, a rotating frame 23 being slidably connected to the bottom of the top cover 211, a spiral blade 24 being fixedly connected inside the rotating frame 23, a rubber rod 28 being slidably connected to the bottom of the rotating frame 23, and a cleaning disc 27 being slidably connected to the rubber rod 28.

[0036] In this utility model, when in use, the fixing frame 1 is first fixed to the top of the pipe with bolts, and the water pipe is connected to the inner wall of the fixing frame 1. After the water pipe is started, the rotating frame 23 rotates under the pressure of the water pipe and is pushed to extend. At this time, the top cover 211 is driven to slide along the inner wall of the water pipe under the action of water flow.

[0037] At the same time, a fixed shaft 25 is provided inside the rotating frame 23, so that the rotating frame 23 rotates under the action of the fixed shaft 25 and the liquid ejection hole 26 which is set as an inclined surface, and the water is ejected through the liquid ejection hole 26.

[0038] At the same time, the downward movement of the rotating frame 23 will push the rubber rod 28 out of the cleaning plate 27;

[0039] Subsequently, when encountering a bend in the pipe, the rubber block 29 and the rubber rod 28 are bent first. At this time, the lever 210 on one side is displaced by the rubber rod 28 and disengages from the rotating frame 23. Under the action of water pressure, the rotating frame 23 bends slightly, exposing a gap at the structural connection between the rotating frame 23 and the top cover 211, causing water to gush out. This reduces the water pressure inside the rotating frame 23. Under the buffering effect of the bending of the rubber rod 28, the displacement speed of the rotating frame 23 to the cleaning disc 27 gradually decreases until the rotating frame 23, which is bent by inertia, passes through the pipe, and the rubber rod 28 returns to its original position. At this time, the rotating frame 23 is pushed back to its original position, and the water pressure gradually increases, thereby preventing the cleaning disc 27 from impacting the bend in the pipe at high speed. The brush on the cleaning disc 27 contacts the inner wall of the pipe, while maintaining a distance between itself and the inner wall of the pipe.

[0040] Furthermore, such as Figure 2 , Figure 4 As shown, a spring 3 is fixedly connected to the cleaning disc 27, and a connecting rod 4 is fixedly connected to the spring 3. The side of the connecting rod 4 away from the spring 3 is fixedly connected to the top cover 211. Through the elastic connection structure between the spring 3 and the connecting rod 4, the cleaning disc 27 can adaptively adjust its radial position according to the change of the inner diameter of the pipe, ensuring that the dust removal component 2 fits tightly with the pipe wall, improving the cleaning coverage, and at the same time buffering the mechanical impact during the operation to avoid damage to the pipe wall.

[0041] like Figures 1 to 3 As shown, the rotating frame 23 has an opening, and a liquid ejection hole 26 is fixedly connected to the opening on the rotating frame 23. Utilizing the principle of fluid dynamics, the liquid ejection hole 26 with its inclined structure can convert the kinetic energy of the water flow into the rotational driving force of the rotating frame 23, accelerate the rotation speed of the rotating frame 23, enhance the peeling ability of the spiral blades 24 on the accumulated ash, and optimize the water jet direction to improve the ash removal efficiency.

[0042] A fixed shaft 25 is fixedly connected to the spiral blade 24. The fixed shaft 25 is fixedly connected inside the rotating frame 23. The fixed shaft 25 provides stable support for the spiral blade 24, ensuring its structural strength and positioning accuracy when rotating at high speed. At the same time, the layout design of the spiral blade 24 being higher than the liquid ejection hole 26 allows the water flow to first be disturbed by the blade to form a vortex, and then be ejected at high speed through the liquid ejection hole 26, which enhances the dust removal effect.

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 A lever 210 is fixedly connected to the rubber rod 28. The lever 210 is slidably connected to the bottom of the rotating frame 23. When the dust removal component 2 passes through the curved pipe, the rubber rod 28 is deformed by pressure, triggering the lever 210 to move, causing one side of the rotating frame 23 to detach from the fixed frame 1, forming a pressure relief gap, reducing the impact force of the water flow, preventing excessive scouring of the water flow due to the bending of the pipe, and ensuring the safety of the pipe wall.

[0044] A rubber block 29 is fixedly connected to the rubber rod 28. The rubber block 29 increases the contact area between the rubber rod 28 and the pipe wall, improves the stability and fit of the cleaning component 2 in the pipe, and at the same time, utilizes the flexible buffering properties of rubber to reduce mechanical contact wear on the pipe wall and extend the service life of the heat exchange tube.

[0045] The flexible steel wire rope 22 is slidably connected to the top cover 211. The opening of the top cover 211 and the adaptive design of the flexible steel wire rope 22 allow the steel wire rope to slide freely while transmitting driving force, ensuring that the dust removal assembly 2 can bend flexibly in complex pipelines, maintain the continuity of operation, and effectively solve the problem of adaptability of traditional rigid transmission in curved pipelines.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A tool for cleaning ash inside boiler heat exchanger tubes, characterized in that, include: Fixed frame (1); The dust removal assembly (2) is placed at the bottom of the fixed frame (1). The dust removal assembly (2) includes a rotating rod (21) rotatably connected to the fixed frame (1). A flexible steel wire rope (22) is driven connected to the rotating rod (21). A top cover (211) is fixedly connected to the flexible steel wire rope (22). A rotating frame (23) is slidably connected to the bottom of the top cover (211). A spiral blade (24) is fixedly connected inside the rotating frame (23). A rubber rod (28) is slidably connected to the bottom of the rotating frame (23). A cleaning disc (27) is slidably connected to the rubber rod (28).

2. The boiler heat exchanger tube internal cleaning tool according to claim 1, characterized in that: A spring (3) is fixedly connected to the cleaning tray (27), and a connecting rod (4) is fixedly connected to the spring (3). The side of the connecting rod (4) away from the spring (3) is fixedly connected to the top cover (211).

3. The boiler heat exchanger tube internal cleaning tool according to claim 1, characterized in that: The rotating frame (23) has an opening, and a liquid ejection hole (26) is fixedly connected to the opening on the rotating frame (23).

4. The boiler heat exchanger tube internal cleaning tool according to claim 1, characterized in that: A fixed shaft (25) is fixedly connected to the spiral blade (24), and the fixed shaft (25) is fixedly connected inside the rotating frame (23).

5. The boiler heat exchanger tube internal cleaning tool according to claim 1, characterized in that: A lever (210) is fixedly connected to the rubber rod (28), and the lever (210) is slidably connected to the bottom of the rotating frame (23).

6. The boiler heat exchanger tube internal cleaning tool according to claim 1, characterized in that: A rubber block (29) is fixedly connected to the rubber rod (28).

7. The boiler heat exchanger tube internal cleaning tool according to claim 1, characterized in that: The flexible steel wire rope (22) is slidably connected to the top cover (211).

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