Anti-clogging structure of ecological flow pipeline of hydropower station

Abstract

This utility model discloses an anti-siltation structure for an ecological flow pipeline in a hydropower station, comprising: a gate pier with a main channel inside for controlling water flow; an ecological flow pipe located on one side of the main channel and extending through the gate pier, with a branch pipe connected to one side of the ecological flow pipe; a reinforcing plate at the connection between the branch pipe and the ecological flow pipe; and a chamfered corner at the corner of the branch pipe for ecological flow during gate closure; and a connector located between the branch pipe and the ecological flow pipe to provide a stable connection between the two pipe sections and prevent tilting or displacement. This utility model enables the independent installation of the main channel and the ecological flow pipe, achieving parallel protection of water conservancy scheduling and ecological flow; the chamfered corner design of the branch pipe reduces water flow resistance and sediment retention, suppressing the risk of siltation at its source.

Description

Technical Field

[0001] This utility model relates to the field of water pipe supporting equipment technology, and in particular to an anti-clogging structure for an ecological flow pipeline of a hydropower station. Background Technology

[0002] In the construction of water conservancy projects, hydropower station sluice gates must serve the dual functions of water conservancy scheduling and ecological environmental protection. When the sluice gate is closed, an ecological base flow must be continuously delivered downstream through an independent ecological flow pipeline to maintain the ecological balance of the river channel.

[0003] However, long-term operation of ecological flow pipelines is prone to problems such as siltation and pipeline connection failure, which leads to a decrease in flow efficiency or even flow interruption. Firstly, traditional ecological flow pipelines mostly adopt a simple straight pipe structure, with high water flow resistance at corners and significant silt retention. Secondly, they are prone to re-blockage after dredging is completed. Utility Model Content

[0004] The main purpose of this utility model is to provide an anti-clogging structure for the ecological flow pipeline of a hydropower station, so as to solve the problem that traditional ecological flow pipelines in the prior art are prone to clogging and difficult to maintain anti-clogging for a long time.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-siltation structure for an ecological flow pipeline in a hydropower station, comprising: a gate pier, wherein a main channel is provided inside the gate pier for controlling water flow; an ecological flow pipe, wherein the ecological flow pipe is located on one side of the main channel and passes through the gate pier, a branch pipe is connected to one side of the ecological flow pipe, a reinforcing plate is provided at the connection between the branch pipe and the ecological flow pipe, and an arc-shaped chamfer is provided at the corner of the branch pipe for ecological flow in the closed state; and a connector, wherein the connector is provided between the branch pipe and the ecological flow pipe for providing a stable connection between the two sections of the pipeline and preventing tilting or displacement.

[0006] Furthermore, the connector includes: an outer flange located at the connection between the ecological flow pipe and the branch pipe; an inner flange connected to one side of the outer flange, and the inner flange surface is provided with multiple sets of bolts.

[0007] Furthermore, the bottom of the reinforcing plate is provided with an interlocking plate, the diameter of which is the same as that of the branch pipe.

[0008] Furthermore, the outer flange is provided with a plurality of chemical bolts along the circumferential direction.

[0009] Furthermore, a sealing ring is fitted on the surface of the reinforcing plate, and multiple anti-detachment rings are provided on the surface of the sealing ring.

[0010] Furthermore, both the ecological flow pipe and the branch pipe are equipped with electric valves.

[0011] Furthermore, both the ecological flow pipe and the branch pipe are equipped with flow meters.

[0012] In the specific implementation process: by setting up the main channel and the ecological flow pipe independently, the parallel guarantee of water conservancy scheduling and ecological flow can be achieved; the arc-shaped chamfer design of the branch pipe corners reduces water flow resistance and reduces sediment retention, thus suppressing the risk of siltation from the source. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall anti-siltation structure of the ecological flow pipeline in the hydropower station according to this utility model; Figure 2 This is a schematic diagram of the anti-siltation reinforcement plate of the ecological flow pipeline in a hydropower station according to this utility model. Figure 3 This is a cross-sectional view of the anti-siltation reinforcing plate of the ecological flow pipeline in a hydropower station according to this utility model. Figure 4 This is a schematic diagram of the anti-siltation structure connector for the ecological flow pipeline of a hydropower station according to this utility model; Figure 5 This utility model relates to an anti-clogging structure for the ecological flow pipeline of a hydropower station. Figure 1 Enlarged schematic diagram of the structure at point A in the diagram; Labeling Explanation: 100-Gate pier; 110-Main channel; 120-Ecological pipeline; 121-Flow meter; 122-Electric valve; 130-Branch pipe; 131-Reinforcing plate; 132-Interlocking plate; 133-Sealing ring; 134-Anti-detachment ring; 200-Connector; 210-Outer flange; 211-Chemical bolt; 220-Inner flange; 221-Bolt. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0015] like Figure 1-5As shown, this embodiment provides an example of an anti-clogging structure for an ecological flow pipeline in a hydropower station. The anti-clogging structure for an ecological flow pipeline in a hydropower station includes: a gate pier 100, with a main channel 110 inside the gate pier 100 for controlling water flow; an ecological flow pipe 120, located on one side of the main channel 110 and extending through the gate pier 100; a branch pipe 130 connected to one side of the ecological flow pipe 120; a reinforcing plate 131 at the connection between the branch pipe 130 and the ecological flow pipe 120; and an arc-shaped chamfer at the corner of the branch pipe 130 for ecological flow passage in the closed state; a connector 200, located between the branch pipe 130 and the ecological flow pipe 120, for providing a stable connection between the two pipe sections and preventing tilting or displacement; and a dredging component 300, located between the ecological flow pipe 120 and the branch pipe 130, for dredging the ecological flow pipe 120 and the branch pipe 130.

[0016] Before use, the gate pier 100, main channel 110 and ecological pipeline 120 are all existing structures of the sluice gate. This solution guides and dredges the flow by opening holes on the side wings and adding branch pipes 130, etc., mainly to share the diversion work of ecological pipeline 120 and achieve the effect of preventing blockage.

[0017] During use, when the sluice gate is open, the water flow mainly passes through the main channel 110 to achieve normal water conservancy scheduling; when the sluice gate is closed, the main channel 110 cuts off the main flow, and the ecological flow pipe 120 maintains ecological flow through the branch pipe 130. The water flows out through the ecological flow pipe 120 and the branch pipe 130 to meet the downstream ecological water demand; during installation, the connector 200 aligns and fixes the branch pipe 130 and the ecological flow pipe 120 to ensure that the axes of the two pipes are consistent and to avoid resistance to water flow due to pipe inclination.

[0018] By setting the main channel 110 and the ecological flow pipe 120 independently, the functions of water conservancy scheduling and ecological flow guarantee are separated, meeting the ecological base flow requirements under closed gate conditions; the arc-shaped chamfer at the corner of the branch pipe 130 reduces water flow resistance and the probability of sediment retention, preventing siltation from a structural design perspective; the connector 200 and the dredging component 300 work together to ensure the stability of the pipeline connection and provide a siltation solution, forming a complete anti-siltation optimization system.

[0019] The connector 200 includes: an outer flange 210 located at the connection between the ecological flow pipe 120 and the branch pipe 130; an inner flange 220 connected to one side of the outer flange 210, and multiple sets of bolts 221 are provided on the surface of the inner flange 220.

[0020] During installation, the outer flange 210 is fixed to the ecological flow pipe 120 port, and the inner flange 220 is fixed to the branch pipe 130 port, so that the flange surfaces of the two are tightly fitted. Multiple sets of bolts 221 are passed through the bolt holes of the outer flange 210 and the inner flange 220, and are gradually fixed by tightening them diagonally and evenly to ensure that the flange connection surface is evenly stressed. Chemical bolts 211 are pre-embedded in the concrete structure of the gate pier 100, and the outer flange 210 is fixed to the gate pier 100 body by chemical bolts 211. At the same time, the reinforcement plate 131 can enhance the overall rigidity of the structure and the overall connection rigidity.

[0021] During use, the inner and outer flange structure provides double sealing and fixation, which is more resistant to water flow impact than a single flange connection and prevents the pipeline from tilting or shifting due to vibration. The bolt connection method facilitates disassembly and maintenance in the later stage. The circumferential distribution design of the chemical bolts 211 evenly transmits the axial stress of the pipeline to the gate pier 100 structure, improving the reliability of the connection.

[0022] The outer flange 210 is provided with multiple chemical bolts 211 along the circumferential direction.

[0023] Flange mounting holes are pre-drilled during the pouring of the gate pier 100, or mounting holes are drilled later using drilling equipment. Chemical anchoring agent is injected into the mounting holes, and chemical bolts 211 are inserted. After the anchoring agent has cured, the bolt holes of the outer flange 210 are aligned with the chemical bolts 211. Nuts are installed and tightened to form a rigid connection between the outer flange 210 and the gate pier 100 through the chemical bolts 211. The chemical bolts 211 are evenly distributed circumferentially and have stronger pull-out and shear resistance than ordinary expansion bolts, making them particularly suitable for humid and vibrating water conservancy engineering environments.

[0024] The reinforcing plate 131 has an interlocking plate 132 at its bottom. The diameter of the interlocking plate 132 is the same as that of the branch pipe 130. During use, the interlocking plate 132 can be used to insert the branch pipe 130 into the ecological flow pipe 120 when it is attached to the ecological flow pipe 120, so as to make the interlocking between the branch pipe 130 and the ecological flow pipe 120 more stable and prevent the branch pipe 130 from being misaligned.

[0025] The reinforcing plate 131 is fitted with a sealing ring 133, and the sealing ring 133 is provided with multiple anti-detachment rings 134. During use, the sealing ring 133 provides a sealing effect, filling the gap between the reinforcing plate 131 and the ecological pipe 120 to prevent water leakage. At the same time, the multi-layered anti-detachment rings 134 provide a more stable locking and fixing before installation, making it convenient for users to position the pipe.

[0026] Both the ecological flow pipe 120 and the branch pipe 130 are equipped with electric valves 122. The electric actuator drives the valve core to adjust the flow area of ​​the ecological flow pipe 120 or the branch pipe 130 to achieve precise flow control. When the pipe is detected to be blocked and the flow is abnormal, the water flow can be cut off by closing the electric valve 122 to create safe conditions for dredging operations.

[0027] Both the ecological flow pipe 120 and the branch pipe 130 are equipped with flow meters 121. The flow meters 121 collect the water flow velocity and flow data in the ecological flow pipe 120 and the branch pipe 130 in real time. When the flow data is lower than the set threshold, the system automatically triggers an early warning, prompting the operator that there may be a risk of blockage and that the dredging component 300 needs to be activated. The abnormal flow warning function enables the early detection of blockage problems, avoids the expansion of the blockage, and reduces maintenance costs.

[0028] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of the utility model should be covered within the scope of the utility model.

Claims

1. A silt-prevention structure for an ecological flow pipeline in a hydropower station, characterized in that, include: Gate pier (100), the gate pier (100) has a main channel (110) inside, which is used for water gate to control water flow; An ecological flow pipe (120) is provided on one side of the main channel (110) and the ecological flow pipe (120) passes through the gate pier (100). A branch pipe (130) is connected to one side of the ecological flow pipe (120). A reinforcing plate (131) is provided at the connection between the branch pipe (130) and the ecological flow pipe (120). An arc chamfer is provided at the corner of the branch pipe (130) for ecological flow in the closed state. A connector (200) is provided between the branch pipe (130) and the ecological flow pipe (120) to provide a stable connection between the two pipe sections and prevent tilting or displacement.

2. The anti-siltation structure for the ecological flow pipeline of a hydropower station according to claim 1, characterized in that, The connector (200) includes: An outer flange (210) is provided at the connection between the ecological flow pipe (120) and the branch pipe (130). An inner ring flange (220) is connected to one side of the outer ring flange (210), and multiple sets of bolts (221) are provided on the surface of the inner ring flange (220).

3. The anti-siltation structure for the ecological flow pipeline of a hydropower station according to claim 1, characterized in that, The bottom of the reinforcing plate (131) is provided with an interlocking plate (132), the diameter of which is the same as that of the branch pipe (130).

4. The anti-siltation structure for the ecological flow pipeline of a hydropower station according to claim 2, characterized in that, The outer flange (210) is provided with a plurality of chemical bolts (211) along the circumferential direction.

5. The anti-siltation structure for the ecological flow pipeline of a hydropower station according to claim 3, characterized in that, A sealing ring (133) is fitted on the surface of the reinforcing plate (131), and a plurality of anti-detachment rings (134) are provided on the surface of the sealing ring (133).

6. The anti-siltation structure for the ecological flow pipeline of a hydropower station according to claim 1, characterized in that, Both the ecological flow pipe (120) and the branch pipe (130) are equipped with electric valves (122).

7. The anti-siltation structure for the ecological flow pipeline of a hydropower station according to claim 1, characterized in that, Both the ecological flow pipe (120) and the branch pipe (130) are equipped with flow meters (121).

Images