Impact-resistant and silt-proof fixed base for monitoring water level of mountain torrent channel

Abstract

The utility model discloses an anti-impact and anti-silt fixed base for mountain torrent channel water level monitoring, which comprises a base body similar to a cone frustum shape, the base body comprises a bottom surface, a top surface and a side surface, and a cavity with a through bottom is formed in the base body; a reserved hole is formed in the top of the base body and used for fixing and installing the water level monitoring device in the cavity. A drainage port is formed in the backwater face of the base body and communicated with the cavity. The side face of the base body is composed of a plurality of arc-shaped flow guide faces so as to reduce impact force of water flow. The base is light in weight, can effectively disperse water flow impact force, reduces sediment deposition, and can stably work for a long time.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy monitoring equipment technology, and in particular to an anti-erosion and anti-siltation fixed base for monitoring water levels in mountain torrent channels. Background Technology

[0002] In the field of mountain torrent channel water level monitoring, the fixed base of the monitoring equipment needs to withstand the impact of high-velocity sediment-laden water and sediment abrasion over a long period of time. Traditional bases have the following significant drawbacks:

[0003] Existing fixed bases mostly adopt flat plate or simple columnar structures. When mountain torrent channels experience floods exceeding the warning level, the silt particles carried by the water flow strongly scour the front of the base. The large dynamic water pressure can easily cause the base to shift or overturn. At the same time, the water flow forms a backflow zone behind the base, where silt can easily accumulate quickly. This not only affects the measurement accuracy of the water level sensor but also increases the equipment maintenance cost.

[0004] While some improved base designs incorporate flow-guiding ramps, they lack a systematic anti-scouring and anti-siltation structure. A single ramp design struggles to balance the impact force of water flow with its discharge capacity and fails to address the scouring problem at the base's bottom. Traditional metal bases, while possessing a certain strength, are prone to electrochemical corrosion in mountain floods containing electrolytes, leading to structural failure. Concrete bases, on the other hand, suffer from excessive weight, inconvenient transportation and installation, and poor freeze-thaw resistance. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides an anti-erosion and anti-siltation fixing base for monitoring water levels in mountain torrent channels, which can effectively disperse the impact force of water flow, reduce siltation, and has lightweight and weather-resistant properties.

[0006] Therefore, the present invention adopts the following technical solution:

[0007] An anti-erosion and anti-siltation fixed base for monitoring water levels in mountain torrent channels includes a base body that is approximately truncated conical in shape. The base body includes a bottom surface, a top surface, and a side surface, and a cavity with a through bottom is formed within the base body. A pre-drilled hole is provided on the top of the base body for fixing and installing a water level monitoring device in the cavity. A drain outlet is formed on the back side of the base body, and the drain outlet communicates with the cavity. The side surface of the base body is composed of multiple arc-shaped guide surfaces to reduce the impact force of water flow.

[0008] Preferably, the side of the base body is composed of an arc-shaped flow guide surface, wherein the side of the base body facing the water is composed of a first flow guide surface and a second flow guide surface arranged symmetrically, and the side facing away from the water is a third flow guide surface.

[0009] Preferably, guide ridges are formed at the junction of the first guide surface and the second guide surface, as well as at the junction of the first guide surface, the second guide surface and the third guide surface, to enhance the water flow separation effect.

[0010] The base body is provided with multiple fixing holes for fixing the base body to the mounting base or mounting bracket by fasteners.

[0011] Preferably, a sludge drainage groove is provided at the middle position of the bottom of the base body, and the rear end of the sludge drainage groove is connected to the cavity.

[0012] Preferably, two mounting slots are provided at the bottom of the base body for installing an extension bracket when necessary.

[0013] Preferably, reinforcing ribs and anti-slip grooves are also provided at the bottom of the base body.

[0014] Preferably, the base body is a hollow shell, and a counterweight injection port is provided at the bottom of the base body for filling the base body with weights when necessary.

[0015] In one embodiment of this practical trapezoid, the drain outlet is an inclined triangular opening.

[0016] This utility model, through a composite structure design of an extended triangular fixing frame at the bottom, an inclined guide surface in the middle, and a discharge opening at the rear, combined with the corrosion-resistant and impact-resistant properties of PE material, systematically solves the technical problems of water level monitoring devices being easily damaged by impact, siltation at the rear, and insufficient material durability in high-velocity, sandy environments.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Flow Diversion Design: The arc-shaped flow-diverting surface in the middle of the base forms an optimized angle of attack with the flow-diverting ridge, guiding the high-speed water flow to the sides and upwards. This converts the frontal impact energy into lateral kinetic energy, reducing the scouring effect of the water flow on the bottom of the base, thus adapting to high-impact scenarios in the early stages of flash floods (such as debris flows). This structure significantly improves the stability and maintenance efficiency of the base, ensuring long-term stable operation and solving the problem of equipment fixation and protection in high-velocity, sandy environments.

[0019] 2. Lightweight and rapid deployment: The base adopts a modular design, with a single component weighing less than 14kg. It supports single-person handling or two-person collaborative installation. The modular structure, combined with standardized mounting holes, allows for on-site assembly in less than 1 hour. No professional equipment is required, making it suitable for rapid deployment in remote mountainous areas, as well as outdoor monitoring scenarios in complex water quality areas with industrial wastewater pollution and extreme weather conditions.

[0020] 3. Self-cleaning flow guiding system: The smooth surface of the base (roughness Ra≤3.2μm), combined with the flow guiding ridges and drainage openings, forms a "flushing-draining-self-cleaning" cycle. The superhydrophobic surface properties reduce sediment adhesion by more than 95%, extending the maintenance cycle to more than 30 months, and significantly reducing the frequency of manual dredging.

[0021] 4. Material cost optimization: The base is made of LLDPE material, which reduces the cost by more than 40% compared with metal bases. It has a long service life and is easy to maintain. Its total life cycle cost is more than 35% lower than that of concrete bases.

[0022] 5. LLDPE material has the characteristics of corrosion resistance, weather resistance and lightweight, which ensures the long-term reliability of the fixing base in harsh environments such as high humidity, high salt and extreme cold, and reduces the risk of material aging and corrosion; the material can be recycled and reused, reducing industrial waste pollution and meeting the requirements of sustainable development. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the anti-impact and anti-siltation fixing base according to an embodiment of the present utility model;

[0024] Figure 2 This is a top view of the anti-impact and anti-siltation fixing base according to an embodiment of the present utility model;

[0025] Figure 3 This is a bottom view of the anti-impact and anti-siltation fixing base according to an embodiment of the present utility model;

[0026] Figure 4 This is a schematic diagram of the combined structure of the anti-erosion and anti-siltation fixing base and the water level monitoring device according to an embodiment of the present invention.

[0027] In the picture:

[0028] 1. Fixing hole, 2. Guide ridge, 3. Reserved hole, 4. Drainage notch, 5a. First guide surface, 5b. Second guide surface, 5c. Third guide surface, 6. Mounting groove, 7. Reinforcing rib, 8. Counterweight injection port, 9. Silt discharge groove, 10. Anti-slip groove, 11. Fixing bolt, 12. Water level monitoring device, 13. Cavity, 14. Base body. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the following embodiments are only some embodiments of this utility model, and not all embodiments. 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.

[0030] Figures 1-4The image shows an embodiment of the anti-erosion and anti-siltation fixing base for monitoring water levels in mountain torrent channels according to this utility model. It includes a base body 14, which is approximately truncated cone-shaped, comprising a bottom surface, a top surface, and side surfaces. A cavity 13 with a through bottom is formed within the base body 14. A pre-drilled hole 3 is provided at the top of the base body 14, through which a water level monitoring device 12 can be placed into the cavity 13, fixing the top of the water level monitoring device 12 to the top of the base body 14. The top surface of the base body 14 has a regular geometric shape, and the pre-drilled hole 3 is a modular installation hole. The dimensions of the base body 14 are adapted to the water level monitoring device 12, providing a stable installation foundation and supporting rapid installation and disassembly.

[0031] A drain outlet 4 is formed on the back side of the base body 14. The drain outlet 4 is an inclined triangular opening that communicates with the cavity 13. The drain outlet 4 is adapted to the water flow direction to form a through-flow channel, guiding the water flow to carry sediment out from the rear of the base body, preventing sediment from accumulating behind the base body and forming a backflow siltation area, thus ensuring the cleanliness of the water level monitoring device installation area. The side of the base body 14 is composed of multiple arc-shaped guide surfaces.

[0032] In the embodiment shown in the figure, the side of the base body 14 is composed of three arc-shaped guide surfaces. The side of the base body 14 facing the water consists of two symmetrically arranged first guide surfaces 5a and second guide surfaces 5b. The discharge port 4 is formed on the third guide surface 5c on the side facing away from the water. The connection between the two symmetrically arranged guide surfaces and the connection between the two symmetrically arranged guide surfaces and another arc-shaped guide surface respectively form guide ridges 2.

[0033] The inclination angles of the first and second guide surfaces can be optimized through hydrodynamics to achieve the optimal angle of attack, guiding the high-speed water flow upwards along the curved surface. This converts the frontal impact energy of the high-speed water flow into lateral and upward kinetic energy, reducing the scouring effect of the water flow on the bottom of the base. Simultaneously, the guide ridges enhance the cutting effect of the water flow, reducing the direct impact load on the base. All three guide surfaces are smooth, which reduces sediment adhesion and enhances the base's self-cleaning ability.

[0034] In one embodiment of this utility model, the first guide surface 5a, the second guide surface 5b, and the third guide surface 5c have the same shape and size, and the discharge port 4 is formed on the third guide surface 5c. The angle between the guide ridge line at the middle position (frontmost) of the water-facing surface of the base body 14 and the horizontal plane is 45 degrees.

[0035] To facilitate fixing, multiple fixing holes 1 are provided at appropriate positions on the base body 14 so that the base can be fixed to the mounting base (e.g., a cement platform) or mounting bracket by fasteners.

[0036] See Figure 3A sludge drainage channel 9 is provided at the middle position of the bottom of the base body 14, with two pre-reserved mounting slots 6, as well as reinforcing ribs 7 and anti-slip grooves 10. The rear end of the sludge drainage channel 9 communicates with the cavity 13, facilitating the flushing away of silt deposited in the cavity 13 by water flow. The two mounting slots 6 are used to install an extension bracket when necessary, increasing the contact area between the base and the bottom surface and improving stability. The reinforcing ribs 7 and anti-slip grooves 10 increase the friction at the bottom of the base body, preventing slippage and improving stability.

[0037] In one embodiment of this invention, the base is integrally molded from linear low-density polyethylene (LLDPE) to reduce the overall weight of the base and lower production costs. In this case, a counterweight injection port 8 is also provided at the bottom of the base to fill the base shell with cement, sand, or other heavy materials when needed, improving its impact resistance. Additionally, 0.3% hindered amine light stabilizer (HALS) and 0.2% antioxidant 1010 are added to the LLDPE material. Aging tests have verified that the base has an outdoor service life of ≥10 years, is resistant to corrosion from sandy water with a pH of 2–13, can operate stably for extended periods in a wide temperature range of -40℃ to 80℃, combines rigidity and flexibility, can withstand water flow impact and silt abrasion, has superhydrophobic surface properties and a surface roughness Ra≤3.2μm, significantly reducing silt adhesion.

[0038] The corrosion resistance, weather resistance, and lightweight properties of LLDPE material further ensure the long-term reliability of the base in harsh environments such as high humidity, high salt, and extreme cold, reducing the risk of material aging and corrosion.

[0039] The base of this utility model can adopt a modular design, is lightweight (single component weight ≤14kg), and is easy to install. It can be quickly deployed in mountain flood channels with different terrains, has a long maintenance-free period, and is suitable for outdoor monitoring scenarios with high flow velocity, high sediment content in mountain flood channels, complex water quality areas with industrial wastewater pollution, and extreme climate conditions. It provides a stable and reliable fixing and protection solution for water level monitoring devices, and significantly improves the stability and operation and maintenance efficiency of mountain flood disaster early warning systems.

[0040] Alternatively, the base of this invention can be made into a solid structure using cement, as needed.

Claims

1. An anti-erosion and anti-siltation fixing base for monitoring water levels in mountain torrent channels, characterized in that: The base body (14) is approximately truncated cone-shaped. The base body (14) includes a bottom surface, a top surface, and a side surface. A cavity (13) with a through bottom is formed inside the base body (14). A reserved hole (3) is provided on the top of the base body (14) for fixing and installing a water level monitoring device (12) in the cavity (13). A drain port (4) is formed on the back side of the base body (14) and is connected to the cavity (13). The side surface of the base body (14) is composed of multiple arc-shaped guide surfaces to reduce the impact force of the water flow.

2. The anti-erosion and anti-siltation fixing base according to claim 1, characterized in that: The side of the base body (14) is composed of three arc-shaped flow guiding surfaces. The side of the base body (14) facing the water is composed of a first flow guiding surface (5a) and a second flow guiding surface (5b) arranged symmetrically, while the side facing away from the water is a third flow guiding surface (5c).

3. The anti-erosion and anti-siltation fixing base according to claim 2, characterized in that: The connection between the first guide surface (5a) and the second guide surface (5b), as well as the connection between the first guide surface (5a), the second guide surface (5b) and the third guide surface (5c), form guide ridges (2) to enhance the water flow separation effect.

4. The anti-erosion and anti-siltation fixing base according to claim 1, characterized in that: Multiple fixing holes (1) are provided on the base body (14) for fixing the base body to the mounting base or mounting bracket by fasteners.

5. The anti-erosion and anti-siltation fixing base according to claim 1, characterized in that: A sludge drain (9) is provided at the middle position of the bottom of the base body (14), and the rear end of the sludge drain (9) is connected to the cavity (13).

6. The anti-erosion and anti-siltation fixing base according to claim 1, characterized in that: Two mounting slots (6) are reserved at the bottom of the base body (14) for installing an extension bracket when necessary.

7. The anti-erosion and anti-siltation fixing base according to claim 1, characterized in that: A reinforcing rib (7) and an anti-slip groove (10) are also provided at the bottom of the base body (14).

8. The anti-erosion and anti-siltation fixing base according to claim 1, characterized in that: The base body (14) is a hollow shell, and a counterweight injection port (8) is provided at the bottom of the base body (14) for filling the base body (14) with weights when necessary.

9. The anti-erosion and anti-siltation fixing base according to any one of claims 1-8, characterized in that: The drain outlet (4) is an inclined triangular opening.

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