A descaling device and drainage system for dam seepage holes

By installing a descaling device consisting of a filter screen and a water pump in the dam's seepage holes, the problem of reduced drainage efficiency caused by scale accumulation was solved, achieving efficient and reliable drainage.

CN224678636UActive Publication Date: 2026-08-25THREE GORGES INTELLIGENT ENG CO LTD
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Patent Information

Application Number
CN202522172239.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-14
Publication Date
2026-08-25
Estimated Expiration
2035-10-14

AI Technical Summary

Technical Problem

Scale tends to accumulate in existing dam seepage devices, leading to reduced drainage efficiency and lower reliability.

Method used

Design a descaling device that includes a guide pipe, a drain pipe, and a filter screen. The filter screen is located at the bottom of the guide pipe to intercept scale particles, and the descaling efficiency is improved by using a water pump and a descaling agent injector.

Benefits of technology

It effectively prevents scale buildup and ensures efficient drainage, significantly reduces the risk of blockage, and improves the reliability and ease of maintenance of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model embodiment provides a kind of for dam seepage hole's scale removing device and drainage system, it is related to dam seepage drainage device technical field, the scale removing device includes flow guide pipe, drain pipe and filter screen, the flow guide pipe is connected with dam seepage hole;The drain pipe is located in one side of the flow guide pipe, the drain pipe is communicated with the flow guide pipe and extends to drain groove;The filter screen is located in the bottom of the flow guide pipe.In the utility model embodiment, by the filter screen built-in setting in the bottom of the flow guide pipe, when carrying out scale removing operation, the scale particle that can effectively intercept and receive from the pipe wall drop off, to fundamentally prevent scale from falling into the seepage hole below and causing blockage in structure, ensure higher drainage efficiency, significantly reduce the risk of blockage.
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Description

Technical Field

[0001] This utility model relates to the technical field of dam seepage drainage devices, and in particular to a descaling device and drainage system for dam seepage holes. Background Technology

[0002] In hydropower projects, to ensure the safety and stability of dams, especially earth-rock dams, seepage holes and connected descaling devices are usually installed in the dam body to drain seepage water and reduce seepage pressure within the dam. However, seepage water is generally highly alkaline, and the calcium, magnesium, and other minerals it contains easily precipitate and deposit on the inner wall of the descaling device, forming hard scale.

[0003] Existing seepage pipe structures have a single function. After long-term operation, the continuous accumulation of scale will significantly reduce the flow cross-section, leading to a decrease in drainage efficiency and even pipe blockage, resulting in low reliability. Utility Model Content

[0004] This utility model provides a descaling device and drainage system for seepage holes in dams, in order to solve the technical problem that scale buildup in existing descaling devices can easily lead to reduced drainage efficiency and low reliability.

[0005] In a first aspect, this utility model provides a descaling device for seepage holes in dams, the descaling device including a guide pipe connected to the seepage holes in the dam; A drain pipe is provided on one side of the guide pipe, and the drain pipe is connected to the guide pipe and extends to the drain trough; A filter screen is located at the bottom of the guide tube.

[0006] In some embodiments, it also includes: An annular mounting component is provided at the bottom end of the guide tube, the outer wall of the annular mounting component is connected to the inner wall of the guide tube, and the filter screen is provided inside the annular mounting component.

[0007] In some embodiments, the filter screen is detachably connected to the annular mounting member.

[0008] In some embodiments, the descaling device further includes a water pump located at the top of the guide pipe.

[0009] In some embodiments, the water pump is a manual press pump, and the manual press pump is detachably connected to the top end of the guide pipe via a thread.

[0010] In some embodiments, the diameter of the drain pipe gradually increases from its connection with the guide pipe toward the drain channel.

[0011] In some embodiments, the drain pipe is a retractable structure.

[0012] In some embodiments, it also includes: A descaling agent injector is disposed on the drain pipe and near the connection between the drain pipe and the guide pipe.

[0013] In some embodiments, the flow guide is made of stainless steel.

[0014] Secondly, this utility model embodiment provides a drainage system, the dam drainage system including the aforementioned descaling device for dam seepage holes.

[0015] The beneficial effects of the technical solution provided by this utility model include: This utility model provides a descaling device and drainage system for seepage holes in dams. The descaling device includes a guide pipe, a drain pipe, and a filter screen. The guide pipe is connected to the seepage hole of the dam. The drain pipe is located on one side of the guide pipe, connected to the guide pipe, and extends to a drainage trough. The filter screen is located at the bottom of the guide pipe. In this utility model embodiment, by embedding the filter screen at the bottom of the guide pipe, scale particles falling from the pipe wall can be effectively intercepted and caught during descaling operations. This fundamentally prevents scale from falling into the seepage hole below and causing blockage, ensuring high drainage efficiency and significantly reducing the risk of blockage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a descaling device for seepage holes in a dam, provided for an embodiment of this utility model; Figure 2 A schematic diagram of a filter screen and annular mounting component for a descaling device used in a dam seepage hole, provided for an embodiment of this utility model; Figure 3 A schematic diagram of a descaling agent injector for a descaling device used in a dam seepage hole, provided as an embodiment of this utility model; Figure label: 1. Drainage tube; 2. Drainage pipe; 3. Filter screen; 4. Water pump; 5. Descaling agent syringe; 6. Drainage trough; 7. Ring-shaped mounting component. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] This utility model provides a descaling device and drainage system for seepage holes in dams, which can solve the technical problem that scale accumulation in existing descaling devices in related technologies easily leads to a decrease in drainage efficiency and low reliability.

[0020] See Figure 1 As shown in the figure, this utility model provides a descaling device for a dam seepage hole. The descaling device includes a guide pipe 1, a drain pipe 2, and a filter screen 3. The guide pipe 1 is connected to the dam seepage hole; the drain pipe 2 is located on one side of the guide pipe 1, is connected to the guide pipe 1, and extends to a drainage trough 6; the filter screen 3 is located at the bottom of the guide pipe 1. In this utility model embodiment, by embedding the filter screen 3 at the bottom of the guide pipe 1, it can effectively intercept and receive scale particles falling from the pipe wall during descaling operations. This fundamentally prevents scale from falling into the seepage hole below and causing blockage, ensuring high drainage efficiency and significantly reducing the risk of blockage.

[0021] This utility model provides a descaling device for seepage holes in dams. The descaling device includes a guide pipe, a drain pipe, and a filter screen. The guide pipe is connected to the seepage holes in the dam. The drain pipe is located on one side of the guide pipe, connected to the guide pipe, and extends to a drainage trough. The filter screen is located at the bottom of the guide pipe. In this utility model embodiment, by embedding the filter screen at the bottom of the guide pipe, scale particles falling from the pipe wall can be effectively intercepted and caught during descaling operations. This fundamentally prevents scale from falling into the seepage holes below and causing blockages, ensuring high drainage efficiency and significantly reducing the risk of blockage.

[0022] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 2As shown, the descaling device further includes an annular mounting component 7, which is located at the bottom end of the guide pipe 1. The outer wall of the annular mounting component 7 is connected to the inner wall of the guide pipe 1, and the filter screen 3 is disposed within the annular mounting component 7. This embodiment of the invention provides an independent annular mounting component 7, which is fixed to the bottom end of the guide pipe 1, providing a stable and reliable supporting structure for the filter screen 3. This achieves precise positioning and secure installation of the filter screen 3, ensuring its effective interception of scale.

[0023] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 2 As shown, the filter screen 3 is detachably connected to the annular mounting component 7. In this embodiment of the invention, the filter screen 3 and the annular mounting component 7 are detachably connected, allowing the filter screen 3 to be easily removed for cleaning or replacement after intercepting scale, greatly improving the maintainability of the descaling device and effectively avoiding the problem of affecting the long-term drainage efficiency of the entire descaling device due to filter screen blockage or damage.

[0024] As an optional implementation, in one embodiment of the invention, the descaling device further includes a water pump 4, which is located at the top of the guide pipe 1. By installing the water pump 4 at the top of the guide pipe 1, this embodiment of the invention can actively generate a strong water flow during the descaling operation, effectively flushing and discharging the loosened scale and impurities in the guide pipe 1 and the drain pipe 2, thereby significantly improving the efficiency of physical descaling and ensuring that the descaling device quickly returns to normal operation.

[0025] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 As shown, the water pump 4 is a manual press pump, and the manual press pump is detachably connected to the top end of the guide pipe 1 via a thread. In this embodiment of the present invention, a threaded manual press pump is used as the water pump 4, which can quickly generate suction force when needed without external power. It can powerfully discharge accumulated water and flush away scale, and can also be disassembled for maintenance, significantly improving the convenience and environmental adaptability of descaling operations.

[0026] As an optional implementation, in one embodiment of the invention, the diameter of the drain pipe 2 gradually increases from its connection with the guide pipe 1 towards the drain trough 6. In this embodiment, the drain pipe 2 is configured with a gradually expanding diameter towards the drain trough 6, which naturally reduces the water flow velocity in the pipe. This not only effectively reduces the risk of scale buildup and blockage in the pipe but also improves drainage capacity, thereby maintaining the smooth and stable operation of the drain pipe during long-term operation.

[0027] As an optional implementation, in one embodiment of the utility model, the drain pipe 2 is a telescopic structure. In this embodiment, the drain pipe 2 is a telescopic structure, which can flexibly adapt to the installation distance requirements of different construction sites, effectively improving the versatility and ease of installation of the descaling device, and also facilitating pipe laying and storage in narrow or complex terrain.

[0028] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 3 As shown, the descaling device also includes a descaling agent injector 5, which is disposed on the drain pipe 2 and near the connection between the drain pipe 2 and the guide pipe 1. In this embodiment of the invention, the descaling agent injector 5 is disposed at the connection between the drain pipe 2 and the guide pipe 1, allowing the descaling agent to be directly and accurately injected into the upstream water flow, fully covering the easily scaled sections of the guide pipe 1 and the drain pipe 2, thereby significantly improving the efficiency and uniformity of chemical descaling and achieving a more thorough dissolution and cleaning of stubborn scale.

[0029] As an optional implementation, in one embodiment of the invention, the guide pipe 1 is made of stainless steel. In this embodiment, using stainless steel for the guide pipe 1 improves the corrosion resistance of the pipe body, strengthens the structural strength, and enables it to resist the erosion of alkaline seepage water for a long time, effectively slowing down scale adhesion and significantly extending the service life and reliability of the descaling device.

[0030] This utility model embodiment also provides a drainage system, which includes the aforementioned descaling device for dam seepage holes, comprising a guide pipe 1, a drain pipe 2, and a filter screen 3. The guide pipe 1 is connected to the dam seepage holes; the drain pipe 2 is located on one side of the guide pipe 1, is connected to the guide pipe 1, and extends to a drainage trough 6; the filter screen 3 is located at the bottom of the guide pipe 1. In this utility model embodiment, by embedding the filter screen 3 at the bottom of the guide pipe 1, during descaling operations, it can effectively intercept and catch scale particles falling from the pipe wall, thereby fundamentally preventing scale from falling into the seepage holes below and causing blockage, ensuring high drainage efficiency, and significantly reducing the risk of blockage.

[0031] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 2As shown, the descaling device further includes an annular mounting component 7, which is located at the bottom end of the guide pipe 1. The outer wall of the annular mounting component 7 is connected to the inner wall of the guide pipe 1, and the filter screen 3 is disposed within the annular mounting component 7. This embodiment of the invention provides an independent annular mounting component 7, which is fixed to the bottom end of the guide pipe 1, providing a stable and reliable supporting structure for the filter screen 3. This achieves precise positioning and secure installation of the filter screen 3, ensuring its effective interception of scale.

[0032] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 2 As shown, the filter screen 3 is detachably connected to the annular mounting component 7. In this embodiment of the invention, the filter screen 3 and the annular mounting component 7 are detachably connected, allowing the filter screen 3 to be easily removed for cleaning or replacement after intercepting scale, greatly improving the maintainability of the descaling device in the drainage system and effectively avoiding the problem of affecting the long-term drainage efficiency of the entire descaling device due to filter clogging or damage.

[0033] As an optional implementation, in one embodiment of the invention, the descaling device further includes a water pump 4, which is located at the top of the guide pipe 1. By installing a water pump 4 at the top of the guide pipe 1, this embodiment of the invention can actively generate a strong water flow during the descaling operation, effectively flushing and discharging loose scale and impurities from the guide pipe 1 and the drain pipe 2, thereby significantly improving the efficiency of physical descaling and ensuring rapid restoration of unobstructed flow.

[0034] As an optional implementation, in one embodiment of the invention, the water pump 4 is a manual press pump, and the manual press pump is detachably connected to the top end of the guide pipe 1 via a thread. In this embodiment of the invention, the use of a threaded manual press pump as the water pump 4 allows for rapid generation of suction force when needed without external power, effectively discharging accumulated water and flushing away scale, while also enabling maintenance through disassembly, significantly improving the convenience and environmental adaptability of the descaling operation.

[0035] As an optional implementation, in one embodiment of the invention, the diameter of the drain pipe 2 gradually increases from its connection with the guide pipe 1 towards the drain trough 6. In this embodiment, the drain pipe 2 is configured with a gradually expanding diameter towards the drain trough 6, which naturally reduces the water flow velocity in the pipe. This not only effectively reduces the risk of scale buildup and blockage in the pipe but also improves drainage capacity, thereby maintaining the smooth and stable operation of the drain pipe during long-term operation.

[0036] As an optional implementation, in one embodiment of the utility model, the drain pipe 2 is a telescopic structure. In this embodiment, the drain pipe 2 is a telescopic structure, which can flexibly adapt to the installation distance requirements of different construction sites, effectively improving the versatility and ease of installation of the descaling device, and also facilitating pipe laying and storage in narrow or complex terrain.

[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0038] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A descaling device for seepage holes in dams, characterized in that, include: A diversion pipe (1) is connected to the seepage hole of the dam; Drainage pipe (2), the drainage pipe (2) is located on one side of the guide pipe (1), the drainage pipe (2) is connected to the guide pipe (1) and extends to the drainage trough (6). Filter (3), the filter (3) is located at the bottom of the guide pipe (1).

2. The descaling device for seepage holes in dams according to claim 1, characterized in that, Also includes: The annular mounting component (7) is located at the bottom end of the guide pipe (1), and the outer wall of the annular mounting component (7) is connected to the inner wall of the guide pipe (1). The filter screen (3) is located inside the annular mounting component (7).

3. A descaling device for seepage holes in dams according to claim 2, characterized in that: The filter (3) is detachably connected to the annular mounting component (7).

4. A descaling device for seepage holes in dams according to claim 1, characterized in that, Also includes: A water pump (4) is located at the top of the guide pipe (1).

5. A descaling device for seepage holes in dams according to claim 4, characterized in that: The water pump (4) is a manual press pump, and the manual press pump is detachably connected to the top end of the guide pipe (1) by a thread.

6. A descaling device for seepage holes in dams according to claim 1, characterized in that: The diameter of the drain pipe (2) gradually increases from its connection with the guide pipe (1) toward the drain trough (6).

7. A descaling device for seepage holes in dams according to claim 1, characterized in that: The drain pipe (2) is a retractable structure.

8. A descaling device for seepage holes in dams according to claim 1, characterized in that, Also includes: Descaling agent injector (5), the descaling agent injector (5) is located on the drain pipe (2) and near the connection between the drain pipe (2) and the guide pipe (1).

9. A descaling device for seepage holes in dams according to claim 1, characterized in that: The guide tube (1) is made of stainless steel.

10. A drainage system, characterized in that, Includes a descaling device for seepage holes in dams as described in any one of claims 1-9.