A high-efficiency composite flow structure applied to a space-constrained inverted siphon scene

Abstract

This utility model provides a high-efficiency composite flow structure for use in space-constrained inverted siphon scenarios, comprising: an inverted siphon body, including a lower water conveyance pipe extending from an upstream high-level inlet to a downstream low-level outlet; a reconstruction structure, including a reinforced concrete top slab and gravity retaining walls located on both sides upstream of the inverted siphon inlet; and a diversion gate structure located at the upper end of the inverted siphon inlet, including a gate body, a gate, a hoist, a base plate, and a toothed wall. The gate is installed in the gate hole of the gate body and is opened and closed by the hoist located at the upper end of the gate body. The base plate is a reinforced concrete base plate, and a toothed wall is provided on each of its upstream and downstream sides. This utility model solves the common industry problems of insufficient flow capacity and lack of emergency flood discharge in space-constrained inverted siphons through a combined discharge structure. At the same time, relying on the existing layout, it effectively avoids the occupation of restricted areas such as permanent basic farmland and ecological protection land.

Description

Technical Field

[0001] This utility model relates to the technical field of water conservancy engineering, and in particular to a high-efficiency composite flow structure applied to spatially constrained inverted siphon scenarios. Background Technology

[0002] In water conservancy, irrigation, water supply and flood control engineering systems, inverted siphons, as typical pressure water conveyance structures, are widely used in water conveyance scenarios that cross low-lying areas, rivers or other obstacles.

[0003] Traditional inverted siphon structure design has significant limitations: Firstly, its function is limited, only meeting the needs of pressurized water transmission. It cannot meet the emergency flood discharge needs when the upstream water volume surges during the flood season. Due to the limitations of the closed pipeline structure, there is a lack of additional flood discharge channels, which can easily lead to high water levels during the flood season, causing safety hazards such as pipeline overload, scouring of surrounding channels, and even structural collapse. Secondly, the adaptability of the renovation is poor. Most of the existing inverted siphon projects were built a long time ago, and the surrounding land use planning has been fixed. For example, they are near permanent basic farmland and ecological protection red lines. It is impossible to expand the flow section or add flood discharge facilities by demolition and reconstruction. Traditional renovation schemes are difficult to balance the dual needs of functional improvement and land protection. As a result, a large number of space-constrained inverted siphons have long suffered from insufficient flow capacity, which affects the overall operating efficiency and safety stability of water conservancy projects.

[0004] In view of this, the inventors have designed a high-efficiency composite flow structure for use in space-constrained inverted siphon scenarios, which leads to this invention. Utility Model Content

[0005] To solve the above problems, the technical solution of this utility model is as follows: A high-efficiency composite flow structure for use in space-constrained inverted siphon scenarios includes: The inverted siphon body includes a lower water conveyance pipe extending from the upstream high-level inlet to the downstream low-level outlet; The reconstruction structure includes a reinforced concrete roof slab that is repaved along the top of the lower water supply pipe and gravity retaining walls located on both sides upstream of the inverted siphon inlet. The water diversion gate structure is located at the upper end of the inverted siphon inlet and includes a gate body, a gate, a hoist, a base plate, and a toothed wall. The gate is installed in the gate hole of the gate body and is raised and lowered by the hoist located at the upper end of the gate body to open and close the gate hole. The base plate is a reinforced concrete base plate, and a toothed wall is provided on its upstream and downstream sides.

[0006] Preferably, the gate body has two gate openings arranged side by side along both sides of the waterway, and the gate and the hoist are respectively provided in two sets and installed at the corresponding gate opening positions.

[0007] Preferably, the inverted siphon body includes two lower water conveyance pipes arranged side by side along both sides of the waterway.

[0008] Preferably, the lower water supply pipeline is an inverted siphon box culvert.

[0009] Preferably, the gate body includes gate piers and an opening and closing platform. There are three gate piers distributed at intervals along both sides of the waterway, forming a gate slot between adjacent gate piers. The opening and closing platform is located on the top of the gate piers, and the opening and closing machine is located on the opening and closing platform.

[0010] Preferably, the upper part of the gate opening and closing platform is provided with a gate opening and closing room, the gate opening and closing machine is located in the gate opening and closing room, and a traffic bridge connecting the embankment and the gate opening and closing platform is provided on one side of the gate pier.

[0011] Preferably, the traffic bridge is equipped with guardrails on its outer side.

[0012] Preferably, the gate opener is a dual-purpose manual / electric gate opener.

[0013] Preferably, the bottom plate extends downstream of the waterway, and its end is provided with a masonry riprap layer and a crushed stone backfill layer in sequence between it and the inverted siphon outlet.

[0014] Preferably, it also includes a sedimentation tank located upstream of the inverted siphon inlet.

[0015] The beneficial effects of this utility model are: This utility model, through a combined inverted siphon water conveyance and diversion gate flood discharge structure, breaks through the functional limitation of traditional inverted siphons that can only convey water, and realizes dual functions in one structure. It solves the common problems in the industry of insufficient flow capacity and lack of emergency flood discharge in space-constrained inverted siphons, and significantly improves the flood control safety and water supply security of water conservancy projects.

[0016] At the same time, by making full use of the existing layout of the inverted siphon project, only the upper structure needs to be modified and a diversion gate component needs to be added. There is no need to expand the land use to the surrounding area, which effectively avoids the occupation of restricted areas such as permanent basic farmland and ecological protection land, and takes into account both the project function and land use policy requirements, thus protecting the surrounding agricultural production and ecological environment.

[0017] In addition, the main structure is made of C25 reinforced concrete, combined with gravity retaining walls and toothed walls to resist erosion and displacement. The structure has high strength and strong load-bearing capacity, and can withstand the impact of water flow and natural environment for a long time. It is expected to have a long service life and good stability. Attached Figure Description

[0018] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0019] in: Figure 1 This is one of the cross-sectional structural schematic diagrams of this utility model; Figure 2 This is the second cross-sectional structural schematic diagram of this utility model.

[0020] Label Explanation: 100. Inverted siphon body; 110. Lower water conveyance pipe; 120. Plain concrete foundation; 200. Reconstructed structure; 210. Reinforced concrete top slab; 220. Gravity retaining wall; 300. Diversion gate structure; 310. Gate body; 311. Gate pier; 312. Opening and closing platform; 320. Gate; 330. Hoist; 340. Bottom slab; 350. Toothed wall; 360. Gate opening; 400. Hoisting and closing room; 410. Traffic bridge; 420. Aluminum alloy doors and windows; 430. Steel plate door; 440. Guardrail; 500. Mortar-grouted masonry seawall layer; 600. Crushed stone backfill layer. Detailed Implementation

[0021] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] Please see Figures 1 to 2 This is a high-efficiency composite flow structure applied to a space-constrained inverted siphon scenario, which is the preferred embodiment of this utility model. It includes an inverted siphon body 100, a reconstruction structure 200, and a water diversion gate structure 300, as detailed below: The inverted siphon body 100 includes a lower water conveyance pipe 110 extending from the upstream high-level inlet to the downstream low-level outlet. The bottom of the inverted siphon body 100 is provided with a C20 plain concrete cushion layer 120, which is generally 100mm thick. A C25 reinforced concrete box culvert (i.e., the lower water conveyance pipe 110) is formed on the upper end of the C20 plain concrete cushion layer 120.

[0023] The reconstruction structure 200 includes a reinforced concrete top slab 210 that is re-laid along the top of the lower water supply pipe 110 and gravity retaining walls 220 located on both sides upstream of the inverted siphon inlet. In this embodiment, the original upper structure of the inverted siphon is reconstructed and integrally cast to form a C25 reinforced concrete top slab 210, and gravity retaining walls 220 are reconstructed on both sides upstream of the inverted siphon inlet.

[0024] The diversion gate structure 300 is located at the upper end of the inverted siphon inlet and includes a gate body 310, a gate 320, a hoist 330, a base plate 340, and a toothed wall 350. The gate 320 is installed in the gate hole 360 ​​of the gate body 310 and is raised and lowered by the hoist 330 located at the upper end of the gate body 310 to open and close the gate hole 360. The base plate 340 is a 700mm thick C25 reinforced concrete base plate, and a toothed wall 350 is provided on its upstream and downstream sides.

[0025] Specifically, in this embodiment, a two-hole gate body 310 (i.e., a two-hole water diversion gate) with a diameter of 2.0m × 2.0m (width × height) is added to the upper end of the inverted siphon inlet. The gate body 310 has two gate openings 360 arranged side by side along both sides of the waterway. The total width of the gate body 310 is 5.5m, the net width is 4.0m, and the net width of a single gate opening 360 is 2.0m. A flat steel gate 320 is vertically slidably installed inside the gate opening 360.

[0026] In addition, the gate body 310 includes gate piers 311 and opening and closing platform 312. There are three gate piers 311, which are distributed at intervals along both sides of the waterway, and gate slots (i.e. gate holes 360, not shown in the figure) are formed between adjacent gate piers 311. The opening and closing platform 312 is located on the top of the gate piers 311, and the opening and closing machine 330 is located on the opening and closing platform 312.

[0027] Specifically, the gate piers 311 are made of C25 reinforced concrete and are cast on the top of the base plate 340. Two gate slots (i.e., the aforementioned gate openings 360) are formed between the three gate piers 311. The opening and closing platform 312 is a flat C25 reinforced concrete platform and is cast on the top of the three gate piers 311. The hoist 330 is a QL-10t-SD hand and electric hoist 330, which is installed and fixed on the opening and closing platform 312 at a position opposite to the gate openings 360. The hoist 330 is connected to the top of the gate 320, thereby realizing the control of the gate 320.

[0028] Furthermore, in this embodiment, the gate 320 and the hoist 330 are respectively provided in two sets and are installed at the corresponding gate opening 360 positions.

[0029] In addition, in order to protect the hoist 330, a hoisting room 400 is provided at the upper end of the hoisting platform 312, and the hoist 330 is located in the hoisting room 400. A traffic bridge 410 connecting the embankment and the hoisting platform 312 is provided on one side of the gate pier 311.

[0030] In this embodiment, the opening and closing room 400 is formed by brick wall construction. Aluminum alloy doors and windows 420 are installed on its side to facilitate observation of the interior. Steel plate doors 430 are installed on the side walls for easy access. A stepped traffic bridge 410 is also provided at the position connecting the steel plate doors 430 to facilitate access to and from the top of the canal.

[0031] For safety reasons, guardrails 440 are installed on the outside of the traffic bridge 410.

[0032] Specifically, the inverted siphon body 100 includes two lower water conveyance pipes 110 arranged side by side along both sides of the waterway.

[0033] Preferably, the lower water supply pipe 110 is an inverted siphon box culvert.

[0034] Preferably, the bottom plate 340 extends to the downstream of the waterway, and a masonry riprap layer 500 and a crushed stone backfill layer 600 are sequentially provided between its end and the inverted siphon outlet.

[0035] Preferably, it also includes a sedimentation tank (not shown in the figure) located upstream of the inverted siphon inlet.

[0036] The beneficial effects of this utility model are: This utility model, through a combined inverted siphon water conveyance and diversion gate flood discharge structure, breaks through the functional limitation of traditional inverted siphons that can only convey water, and realizes dual functions in one structure. It solves the common problems in the industry of insufficient flow capacity and lack of emergency flood discharge in space-constrained inverted siphons, and significantly improves the flood control safety and water supply security of water conservancy projects.

[0037] At the same time, by making full use of the existing layout of the inverted siphon project, only the upper structure needs to be modified and a diversion gate component needs to be added. There is no need to expand the land use to the surrounding area, which effectively avoids the occupation of restricted areas such as permanent basic farmland and ecological protection land, and takes into account both the project function and land use policy requirements, thus protecting the surrounding agricultural production and ecological environment.

[0038] In addition, the main structure is made of C25 reinforced concrete, combined with gravity retaining walls 220 and toothed walls 350, which are designed to resist erosion and displacement. The structure has high strength and strong load-bearing capacity, and can withstand the impact of water flow and natural environment for a long time. It is expected to have a long service life and good stability.

[0039] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A high-efficiency composite flow structure for use in space-constrained inverted siphon scenarios, characterized in that, include: The inverted siphon body (100) includes a lower water conveyance pipe (110) extending from the upstream high inlet to the downstream low outlet. The reconstruction structure (200) includes a reinforced concrete top slab (210) that is repaved along the top of the lower water supply pipe (110) and gravity retaining walls (220) located on both sides upstream of the inverted siphon inlet. The diversion gate structure (300) is located at the upper end of the inverted siphon inlet and includes a gate body (310), a gate (320), a hoist (330), a base plate (340), and a toothed wall (350). The gate (320) is installed in the gate hole (360) of the gate body (310) and is raised and lowered by the hoist (330) located at the upper end of the gate body (310) to open and close the gate hole (360). The base plate (340) is a reinforced concrete base plate (340), and a toothed wall (350) is provided on its upstream and downstream sides.

2. The high-efficiency composite flow structure for spatially constrained inverted siphon scenarios according to claim 1, characterized in that, The gate body (310) has two gate openings (360) arranged side by side along both sides of the waterway. The gate (320) and the hoist (330) are respectively provided in two sets and are installed at the corresponding gate openings (360).

3. The high-efficiency composite flow structure for spatially constrained inverted siphon scenarios according to claim 1, characterized in that, The inverted siphon body (100) includes two lower water conveyance pipes (110) arranged side by side along both sides of the waterway.

4. The high-efficiency composite flow structure for spatially constrained inverted siphon scenarios according to claim 3, characterized in that, The lower water supply pipeline (110) is an inverted siphon box culvert.

5. The high-efficiency composite flow structure for spatially constrained inverted siphon scenarios according to claim 2, characterized in that, The gate body (310) includes gate piers (311) and opening and closing platform (312). There are three gate piers (311) and they are distributed at intervals along both sides of the waterway. A gate slot is formed between adjacent gate piers (311). The opening and closing platform (312) is located on the top of the gate piers (311), and the opening and closing machine (330) is located on the opening and closing platform (312).

6. The high-efficiency composite flow structure for spatially constrained inverted siphon scenarios according to claim 5, characterized in that, The upper end of the opening and closing platform (312) is provided with an opening and closing room (400), the opening and closing machine (330) is located in the opening and closing room (400), and a traffic bridge (410) connecting the embankment and the opening and closing platform (312) is provided on one side of the gate pier (311).

7. The high-efficiency composite flow structure for spatially constrained inverted siphon scenarios according to claim 6, characterized in that, The traffic bridge (410) is equipped with guardrails (440) on the outside.

8. The high-efficiency composite flow structure for spatially constrained inverted siphon scenarios according to claim 1, characterized in that, The gate opener (330) is a dual-purpose manual and electric gate opener (330).

9. The high-efficiency composite flow structure for spatially constrained inverted siphon scenarios according to claim 1, characterized in that, The bottom plate (340) extends to the downstream of the waterway, and between its end and the inverted siphon outlet, there is a masonry riprap layer (500) and a crushed stone backfill layer (600) in sequence.

10. The high-efficiency composite flow structure for spatially constrained inverted siphon scenarios according to claim 1, characterized in that, It also includes a sedimentation tank located upstream of the inverted siphon inlet.

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