A boiler descaling device for thermal power plants

Abstract

This utility model discloses a boiler descaling device for thermal power plants, applied in the field of boiler descaling technology. It includes a fixed rod with an extension head at one end. A sliding rod, slidably connected to the inside of the fixed rod, is welded to the end of the extension head near the fixed rod. A threaded shaft is rotatably connected to the end of the fixed rod away from the extension head. By pulling the sliding block to slide on the top of the extension head, the high-pressure water gun head at the top of the rotating rod can be rotated at an angle, changing the outlet position of the high-pressure water gun head. This not only allows adjustment of the flushing angle of the high-pressure water gun head but also allows the rotating rod to retract to the surface of the extension head, facilitating the extension head's insertion into boilers with small inlets for descaling. By rotating the threaded shaft and engaging the sliding rod, the extension head can extend outward from inside the fixed rod. This allows adjustment of the length between the fixed rod and the extension head, enabling it to reach into boilers of various lengths, improving practicality.

Description

Technical Field

[0001] This utility model belongs to the field of boiler descaling technology, and specifically relates to a boiler descaling device for thermal power plants. Background Technology

[0002] Thermal power plants typically use boilers to generate steam by using the heat energy released during fuel combustion to drive steam turbines for power generation. Boilers are prone to scale buildup during use, so the scale needs to be removed regularly.

[0003] Currently, Chinese utility model patent CN214918920U discloses a descaling device for boilers in thermal power plants. Existing boilers generally use high-pressure water jets to clean scale, effectively removing scale by mixing descaling agents into the water. However, for some smaller imported boilers, workers cannot penetrate the interior and can only insert the high-pressure water jet at a specific angle. This method lacks control over the water jet head, limiting the cleaning area. Furthermore, the high-pressure water jet is not easily adjustable according to the boiler's internal depth, resulting in poor descaling effectiveness. Utility Model Content

[0004] The purpose of this utility model is to provide a boiler descaling device for thermal power plants. Its advantages are that the flushing angle and length of the high-pressure water gun can be adjusted to make it suitable for boilers of various lengths, thereby improving the boiler cleaning and descaling effect.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a boiler descaling device for thermal power plants, comprising a fixed rod, an extension head provided at one end of the fixed rod, a sliding rod slidably connected to the inside of the fixed rod welded to the end of the extension head near the fixed rod, a threaded shaft rotatably connected to the end of the fixed rod away from the extension head, the sliding rod being threadedly sleeved on the surface of the threaded shaft, a rotating rod rotatably connected to the top of the extension head, an installation sleeve welded to the top of the rotating rod, a high-pressure water gun head slidably connected through the inside of the installation sleeve, and a water pipe fixedly connected to the end of the high-pressure water gun head near the fixed rod.

[0006] The above technical solution involves sliding the sliding block at the top of the extension head, which rotates the high-pressure water gun head at the top of the rotating rod, changing the outlet position of the high-pressure water gun head. This not only adjusts the flushing angle of the high-pressure water gun head but also allows the rotating rod to retract to the surface of the extension head, facilitating its insertion into boilers with smaller inlets for descaling. By rotating the threaded shaft and engaging the sliding rod, the extension head can extend outward from inside the fixed rod. This adjusts the length between the fixed rod and the extension head, allowing it to reach into boilers of various lengths, thus improving practicality.

[0007] The present invention is further configured such that the end of the rotating rod away from the fixed rod is provided with a sliding block that is slidably connected to the inside of the extension head; the ends of the rotating rod and the sliding block that are close to each other are respectively provided with an arc surface and an inclined surface; a connecting rope is fixedly connected to the side of the sliding block that is close to the fixed rod; a through hole is provided inside the threaded shaft that is slidably connected to the connecting rope; and a spring is sleeved on the end of the connecting rope that is close to the sliding block and is respectively bolted to the sliding block and the extension head.

[0008] The above technical solution involves adjusting the length between the fixing rod and the extension head to allow it to extend into boilers of various lengths, thus improving practicality.

[0009] The present invention is further provided that a handwheel that is rotatably connected to the fixed rod is welded to the end of the threaded shaft away from the extension head.

[0010] By adopting the above technical solution, the threaded shaft inside the fixed rod can be rotated by rotating the handwheel, which is convenient for operation.

[0011] The present invention is further provided that an anti-slip sleeve is fixedly sleeved at the end of the surface of the fixing rod away from the extension head.

[0012] The above technical solution increases the friction on the surface of the fixed rod, improving the stability when the worker holds it.

[0013] The present invention is further configured such that a sliding block is welded to the end of the sliding rod away from the extension head, and a linear groove that is slidably connected to the sliding block is provided inside the fixed rod.

[0014] The above technical solution is used to limit the sliding rod from sliding outward inside the fixed rod, preventing the thread engagement from causing the sliding rod to rotate inside the fixed rod.

[0015] The present invention is further configured such that the top of both the fixing rod and the extension head are welded with a water pipe retainer that slides and fits into the water pipe.

[0016] The above technical solution is adopted: by installing a water pipe clamp, the water pipe can be limited and thus the water pipe is attached to the surface of the fixed rod. During installation, the high-pressure water gun head and the water pipe only need to be passed through the water pipe clamp once.

[0017] The present invention is further configured such that the top of the mounting sleeve is threadedly connected to a fastening bolt that engages with the high-pressure water gun head.

[0018] The above technical solution involves tightening the fastening bolts to engage with the threads of the mounting sleeve and then moving them downwards, thereby securing the high-pressure water gun head against the inside of the mounting sleeve for a limited position.

[0019] The present invention is further provided that the top of the extension head is provided with an arc-shaped groove for use with a water pipe on the side near the fixed rod.

[0020] The above technical solution allows the water pipe to be supported and limited by the arc groove and the water pipe retainer at the top of the extension head when the rotating rod rotates upward, so that the water pipe bends without affecting the water supply.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. By pulling the sliding block to slide on the top of the extension head, the high-pressure water gun head at the top of the rotating rod can be rotated, changing the position of the high-pressure water gun head's outlet. This not only allows adjustment of the high-pressure water gun head's flushing angle, but also allows the rotating rod to retract to the surface of the extension head, making it easier to insert the extension head into the interior of a boiler with a small inlet for descaling.

[0023] 2. By rotating the threaded shaft and engaging the sliding rod, the extension head can extend outward from inside the fixed rod. This allows adjustment of the length between the fixed rod and the extension head, enabling it to reach into boilers of various lengths and improving practicality. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a cross-sectional view of the extension head structure of this utility model;

[0026] Figure 3 This is a sectional view of the fixing rod structure of this utility model;

[0027] Figure 4 This is a cross-sectional view of the threaded shaft structure of this utility model;

[0028] Figure 5 This is a utility model Figure 2 Enlarged view of point A in the image.

[0029] Reference numerals: 1. Fixed rod; 2. Extension head; 3. Sliding rod; 4. Threaded shaft; 5. Sliding block; 6. Linear groove; 7. Rotating rod; 8. Mounting sleeve; 9. High-pressure water gun head; 10. Water pipe; 11. Sliding stop block; 12. Spring; 13. Connecting rope; 14. Handwheel; 15. Anti-slip sleeve; 16. Fastening bolt; 17. Water pipe retainer; 18. Arc groove; 19. Through hole. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1:

[0032] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A boiler descaling device for thermal power plants includes a fixed rod 1, an extension head 2 at one end of the fixed rod 1, a sliding rod 3 slidably connected to the inside of the fixed rod 1 welded to the end of the extension head 2 near the fixed rod 1, a threaded shaft 4 rotatably connected to the end of the fixed rod 1 away from the extension head 2, and the sliding rod 3 threadedly sleeved on the surface of the threaded shaft 4. A rotating rod 7 is rotatably connected to the top of the extension head 2, and an mounting sleeve 8 is welded to the top of the rotating rod 7. A high-pressure water gun head 9 is slidably connected through the mounting sleeve 8, and a water pipe 10 is fixedly connected to the end of the high-pressure water gun head 9 near the fixed rod 1. By pulling the sliding stop 11 to slide on the top of the extension head 2, the high-pressure water gun head 9 at the top of the rotating rod 7 can be rotated, changing the position of the water outlet of the high-pressure water gun head 9. This not only allows adjustment of the flushing angle of the high-pressure water gun head 9, but also allows the rotating rod 7 to retract to the surface of the extension head 2, facilitating the insertion of the extension head 2 into the boiler with a small inlet for descaling.

[0033] refer to Figure 3 , Figure 4 A handwheel 14, which is rotatably connected to the fixed rod 1, is welded to the end of the threaded shaft 4 away from the extension head 2. The threaded shaft 4 inside the fixed rod 1 can be rotated by rotating the handwheel 14, which is convenient for operation.

[0034] refer to Figure 1 , Figure 3 An anti-slip sleeve 15 is fixedly fitted to the end of the fixed rod 1 away from the extension head 2. This increases the friction on the surface of the fixed rod 1 and improves the stability when the worker holds it.

[0035] refer to Figure 2 , Figure 3 A sliding block 5 is welded to the end of the sliding rod 3 away from the extension head 2. A linear groove 6 is provided inside the fixed rod 1, which is slidably connected to the sliding block 5. This groove is used to limit the sliding of the sliding rod 3 outward inside the fixed rod 1, preventing the threaded engagement from causing the sliding rod 3 to rotate inside the fixed rod 1.

[0036] Brief description of usage: By inserting the extension head 2 into the boiler, the operator holds the other end of the fixing rod 1 away from the extension head 2. At this time, the other end of the water pipe 10 away from the high-pressure water gun head 9 is connected to a water pump. When the water pump pumps water, the water flow is sprayed out through the high-pressure water gun head 9, thus flushing the area pointed to by the outlet of the high-pressure water gun head 9 and removing scale from the inside of the boiler. Simultaneously, by rotating the threaded shaft 4, which engages with the sliding rod 3, the sliding rod 3 slides linearly outward inside the fixing rod 1 under the mutual sliding limit of the sliding block 5 and the linear slide groove 6, allowing the extension head 2 to extend forward. The lengths of the fixing rod 1 and the extension head 2 can be adjusted to suit boilers of various lengths.

[0037] Example 2:

[0038] refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 A boiler descaling device for thermal power plants includes a rotating rod 7 with a sliding stop 11 slidably connected to an extension head 2 at the end furthest from the fixed rod 1. The rotating rod 7 and the sliding stop 11 have an arc surface and an inclined surface at their respective ends. A connecting rope 13 is fixedly connected to the side of the sliding stop 11 closest to the fixed rod 1. A through hole 19, through which the connecting rope 13 slides, is formed inside a threaded shaft 4. A spring 12, bolted to both the sliding stop 11 and the extension head 2, is fitted onto the surface of the connecting rope 13 near the sliding stop 11. By rotating the threaded shaft 4 and engaging the threaded connection with the sliding rod 3, the extension head 2 can extend outward from inside the fixed rod 1. This allows adjustment of the length between the fixed rod 1 and the extension head 2, enabling it to reach into boilers of various lengths and improving practicality.

[0039] refer to Figure 1 , Figure 2 Both the top of the fixing rod 1 and the extension head 2 are welded with water pipe clamps 17 that slide and fit with the water pipe 10. By installing the water pipe clamps 17, the water pipe 10 can be limited, so that the water pipe 10 fits against the surface of the fixing rod 1. During installation, it is only necessary to pass the high-pressure water gun head 9 and the water pipe 10 through the water pipe clamps 17 once.

[0040] refer to Figure 1 , Figure 5 The top of the mounting sleeve 8 is threadedly connected to a fastening bolt 16 that engages with the high-pressure water gun head 9. By tightening the fastening bolt 16 and engaging it with the threads of the mounting sleeve 8, the high-pressure water gun head 9 can be secured and limited inside the mounting sleeve 8.

[0041] refer to Figure 1 , Figure 2 The top of the extension head 2 is provided with an arc-shaped groove 18 on the side near the fixed rod 1, which is used in conjunction with the water pipe 10. When the rotating rod 7 rotates upward, the water pipe 10 can be supported and limited by the arc-shaped groove 18 and the water pipe retainer 17 at the top of the extension head 2, so that the water pipe 10 bends without affecting the water supply.

[0042] Brief description of the operation: By pulling the connecting rope 13 outward, the sliding block 11 slides inside the extension head 2. The sliding block 11 overcomes the elastic force of the spring 12 and pushes the curved surface of the rotating rod 7 with its inclined plane, allowing the rotating rod 7 to rotate at the top of the extension head 2. When the rotating rod 7 rotates at the top of the extension head 2, the high-pressure water gun head 9 fixed to the top of the rotating rod 7 rotates synchronously, changing the position of the water outlet of the high-pressure water gun head 9. The connecting rope 13 is relatively long, so even when the extension head 2 is extended to its maximum length, one end of the connecting rope 13 can be exposed outside the fixed rod 1, allowing it to be pulled by the operator. Finally, after releasing the connecting rope 13, the sliding block 11 resets using the elastic force of the spring 12, thereby rotating the rotating rod 7 back to its original position. This not only allows adjustment of the flushing angle but also makes it easier to insert the extension head 2 into the smaller inlet of a boiler for descaling by retracting the rotating rod 7 to the surface of the extension head 2.

[0043] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0044] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A boiler descaling device for thermal power plants, comprising a fixed rod (1), characterized in that: One end of the fixed rod (1) is provided with an extension head (2). The end of the extension head (2) near the fixed rod (1) is welded with a sliding rod (3) that is slidably connected to the inside of the fixed rod (1). The end of the fixed rod (1) away from the extension head (2) is rotatably connected with a threaded shaft (4). The sliding rod (3) is threaded onto the surface of the threaded shaft (4). The top of the extension head (2) is rotatably connected with a rotating rod (7). The top of the rotating rod (7) is welded with an installation sleeve (8). The inside of the installation sleeve (8) is slidably connected with a high-pressure water gun head (9). The end of the high-pressure water gun head (9) near the fixed rod (1) is fixedly connected with a water pipe (10).

2. A boiler descaling device for thermal power plants according to claim 1, characterized in that: The rotating rod (7) is provided with a sliding block (11) that is slidably connected to the extension head (2) at one end away from the fixed rod (1). The rotating rod (7) and the sliding block (11) are respectively provided with an arc surface and an inclined surface at the ends close to each other. A connecting rope (13) is fixedly connected to the side of the sliding block (11) close to the fixed rod (1). The threaded shaft (4) is provided with a through hole (19) that is slidably connected to the connecting rope (13). A spring (12) is sleeved on the end of the surface of the connecting rope (13) close to the sliding block (11) and is respectively bolted to the sliding block (11) and the extension head (2).

3. The descaling device for boilers in thermal power plants according to claim 1, characterized in that: The threaded shaft (4) is welded to a handwheel (14) that is rotatably connected to the fixed rod (1) at the end away from the extension head (2).

4. The descaling device for boilers in thermal power plants according to claim 1, characterized in that: An anti-slip sleeve (15) is fixedly sleeved on the end of the fixed rod (1) away from the extension head (2).

5. A descaling device for boilers in thermal power plants according to claim 1, characterized in that: The sliding rod (3) has a sliding block (5) welded to one end away from the extension head (2), and the fixed rod (1) has a straight groove (6) that is slidably connected to the sliding block (5) inside.

6. A descaling device for boilers in thermal power plants according to claim 1, characterized in that: The top of both the fixing rod (1) and the extension head (2) are welded with a water pipe retainer (17) that slides and fits with the water pipe (10).

7. A descaling device for boilers in thermal power plants according to claim 1, characterized in that: The top of the mounting sleeve (8) is threadedly connected to a fastening bolt (16) that engages with the high-pressure water gun head (9).

8. A descaling device for boilers in thermal power plants according to claim 1, characterized in that: The top of the extension head (2) is provided with an arc-shaped groove (18) on the side near the fixed rod (1) for use with the water pipe (10).

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