Independently overhauled multi-pipe parallel inverted siphon device

Abstract

The invention relates to the technical field of inverted siphoning, in particular to a multi-pipe parallel inverted siphoning device capable of being independently overhauled, which comprises a water inlet tank well and a water outlet tank well, the plurality of inverted siphon pipes are arranged in parallel at intervals along the river channel direction, and the two ends of each inverted siphon pipe are respectively communicated with the water inlet tank well and the water outlet tank well; the elbow is arranged at the turning position of the inverted siphon path and connected with the end of the corresponding inverted siphon to form an inverted siphon channel crossing a riverbed; a longitudinal communicating pipe and a transverse communicating pipe which are communicated with a through hole for a pipeline to penetrate through are arranged on the well wall of the overhaul connecting well located in the low point area of the inverted siphon pipes; the inverted siphon pipes connected in parallel are arranged at intervals in the river channel direction and are communicated with the water inlet groove well and the water outlet groove well, so that the system has redundancy capacity while meeting the design flow; and when a single pipe is blocked or needs to be overhauled, the target pipe can be switched to be stopped, water can continuously pass through other pipes, and the conveying stopping risk is remarkably reduced.

Description

Technical Field

[0001] This invention relates to the field of inverted siphon technology, specifically to a multi-tube parallel inverted siphon device that can be independently inspected and maintained. Background Technology

[0002] Inverted siphon engineering is widely used for water conveyance when channels or pipes cross obstacles such as rivers, depressions and underground structures. For large flow or scheduling operation needs, multi-hole / multi-pipe parallel connection is often used in engineering to expand water conveyance capacity and scheduling range.

[0003] In the prior art, Chinese patent document CN209211605U discloses an anti-siltation inverted siphon system, which mainly uses high and low drop chambers to make the inverted siphon tilted, and cooperates with bottom troughs, gates, and liquid level sensors to reduce siltation and ensure smooth drainage. Chinese patent document CN111335448A discloses an inverted siphon system and silt removal method, which discloses an inverted siphon system and silt removal ideas (such as setting silt removal floats and reciprocating motion of pulling components) to achieve silt removal inside the pipe. However, consistent with traditional methods, multi-hole / multi-pipe systems are prone to siltation when adjusting the opening, roughness changes, or abrupt changes in upstream and downstream boundaries. Uneven flow distribution between orifices affects flow capacity and flow stability, and may even lead to large fluctuations in inlet water level and induce structural vibrations, thus necessitating structural and operational support with pressure and flow equalization and stable scheduling. In addition, silt, dirt and gas are prone to accumulating in the low-point area of ​​the inverted siphon. Traditional configurations often rely on end chambers and valves for venting and maintenance, which has problems such as low venting efficiency, difficulty in achieving single-pipe isolation maintenance without interrupting water supply, limited working space and high safety risks. Therefore, a node-based maintenance structure that can concentrate drainage at the low point, quickly depressurize, and provide maintenance clearance and prevent detachment from constraints is needed. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-pipe parallel inverted siphon device that can be independently maintained, in order to solve the problems mentioned in the background art, such as uneven flow distribution between holes during scheduling and changes in operating conditions, which can lead to water level fluctuations and vibration risks. In addition, the low points are prone to sedimentation and gas stagnation. Traditional double-end well chamber venting maintenance is inefficient, difficult to isolate single pipes without interrupting water supply, and has limited operation and poor safety. There is an urgent need for a node structure with equal pressure and flow, centralized drainage at low points, rapid pressure relief, and maintenance clearance to prevent detachment.

[0005] The technical solution adopted by this application to solve its technical problem is: a multi-pipe parallel inverted siphon device that can be independently repaired, including: an inlet channel well and an outlet channel well;

[0006] A plurality of inverted siphons are arranged in parallel at intervals along the river channel, and both ends of each inverted siphon are respectively connected to the inlet channel well and the outlet channel well.

[0007] An elbow is provided at the turning point of the inverted siphon path, and the elbow is connected to the corresponding end of the inverted siphon to form an inverted siphon channel that crosses the riverbed;

[0008] On the well wall of the maintenance connection well located in the low point area of ​​the inverted siphon, there are longitudinal connecting pipes and transverse connecting pipes for through holes to connect the pipelines. The longitudinal connecting pipe is arranged along the parallel direction of the inverted siphon, and the transverse connecting pipe is arranged along the direction intersecting the parallel direction of the inverted siphon. The pipes are connected to the maintenance connection well through the through holes so that a connection path is formed between multiple inverted siphons in a parallel system.

[0009] An emergency discharge outlet is connected to the inlet well and is used for discharge during accidents or maintenance.

[0010] Preferably, the inverted siphons are a pipe group structure laid in parallel on the same elevation, and each inverted siphon includes two bends at both ends and a straight pipe section in the middle, the straight pipe section being located below the riverbed and crossing the lowest section of the river channel.

[0011] Preferably, the maintenance connection well is configured as at least one well chamber, with through holes for the longitudinal connecting pipe to pass through on the opposite two sides of the well chamber, and through holes for the transverse connecting pipe to pass through on the other opposite two sides of the well chamber, so that the longitudinal connecting pipe and the transverse connecting pipe are spatially intersected in a cross shape and connected by the maintenance connection well as a node.

[0012] Preferably, a limiting ring is provided at the edge of the through hole, and a limiting piece that cooperates with the limiting ring is provided on the inner side of the maintenance connection well. The limiting ring is used to limit the position of the longitudinal connecting pipe or the transverse connecting pipe, and the limiting piece is used to prevent the longitudinal connecting pipe or the transverse connecting pipe from falling off during maintenance swing. A locking ring is provided at the center of the outer periphery of the maintenance connection well.

[0013] Preferably, both the longitudinal connecting pipe and the transverse connecting pipe are fitted with support rings, and a plurality of first rotating seats are provided on the outer surface of the maintenance connection well. A plurality of second connecting seats are provided on the outer periphery of the support rings. A connecting rod transverse connecting pipe is rotatably installed between the support rings and the second connecting seats, so that the longitudinal connecting pipe or the transverse connecting pipe can swing / deflect relative to the maintenance connection well in the maintenance state.

[0014] Preferably, the inverted siphon is buried in the base structure below the riverbed. The base structure includes, from bottom to top, a layer of rubble, a layer of crushed stone, and a layer of coarse sand. The inverted siphon is set in the coarse sand layer. The rubble layer is used for bearing, the crushed stone layer is used for transition leveling, and the coarse sand layer is used for encapsulation and shaping.

[0015] Preferably, the emergency discharge outlet is located on the side of the inlet well and at a position higher than the lowest point of the inverted siphon, and the emergency discharge outlet is connected to the maintenance connection well or the inverted siphon, so that the inverted siphon channel can be quickly drained and depressurized during maintenance or blockage accidents.

[0016] Preferably, the outer surface of the inverted siphon is coated with an anti-corrosion coating, which can effectively prevent corrosion of the inverted siphon when it is in contact with water flow and the external environment for a long time, thereby extending the service life of the device and ensuring the stability and reliability of the inverted siphon device.

[0017] Preferably, the inverted siphon has an inner wall protrusion structure on its pipe wall. This protrusion structure can effectively reduce the adhesion and friction of the fluid when water flows through it, reduce the energy loss of the water flow, and effectively improve the water flow efficiency of the inverted siphon device.

[0018] Preferably, the inverted siphon uses multiple vibration sensors to monitor the internal water flow status and pipe stress. The sensors can provide real-time feedback on the water flow status and stress data of the inverted siphon, and transmit the data to the control system for automatic adjustment to prevent the device from malfunctioning under extreme conditions.

[0019] The beneficial effects of this application are:

[0020] This application provides a multi-pipe parallel inverted siphon device that can be independently maintained. The multi-pipe parallel inverted siphon is arranged at intervals along the river channel and connected to the inlet and outlet channels. This allows the system to meet the design flow rate while having redundancy. When a single pipe is blocked or needs maintenance, the target pipe can be switched off, while the remaining pipes can continue to carry water, significantly reducing the risk of outages. Furthermore, the connection path formed by the longitudinal and transverse connecting pipes at the maintenance connection well achieves pressure and flow equalization at low points, reducing flow deviation, water level fluctuations, and local scouring / siltation caused by the resistance difference between the orifices. This improves the operational stability of the parallel system and facilitates subsequent capacity expansion.

[0021] This application provides a multi-pipe parallel inverted siphon device that can be independently maintained. It employs a cross-shaped interconnection node structure through the maintenance connection well. A limiting ring is installed in the through hole, a limiting plate is installed inside the well, and a locking ring is installed outside the well, working in conjunction with a support ring, a first rotating seat, a second connecting seat, and a connecting rod. This allows the connecting pipes to be controllably swung and positioned during maintenance. During normal operation, it ensures reliable perforation positioning and sealing while maintaining uniform pressure connection. During maintenance, the pressure is first released by the guide pipe, then the locking ring is loosened and the pipe is swung to create working space, facilitating operations such as sealing, dredging, disassembly, and replacement. The limiting plate provides anti-detachment restraint, reducing the risk of accidental detachment and stress on the interface, and shortening maintenance time.

[0022] This application provides a multi-pipe parallel inverted siphon device that can be independently maintained. The inverted siphon uses a layered base with a layer of rubble for support, a layer of crushed stone for transition and leveling, and a layer of coarse sand for sealing and shaping, and is buried below the riverbed. This can disperse the load, weaken the effects of uneven settlement and scouring, reduce stress concentration and wear in the pipe body, and improve the resistance to settlement, scouring and deformation. The emergency discharge outlet is located on the side of the inlet channel well and is higher than the lowest point and connected to the maintenance connection well or the inverted siphon. In case of blockage or maintenance, it can quickly discharge and reduce pressure, provide a safety boundary for low-point venting and operation, and reduce water hammer impact, thereby improving the efficiency of emergency response and the reliability of the entire service life.

[0023] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. These will be further described in detail below with reference to figures. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0026] Figure 3 This is a schematic diagram of the buried pipe structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the maintenance connection well structure of the present invention;

[0028] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0029] Figure 6 This is a schematic diagram of the planar structure of the maintenance connection well of the present invention.

[0030] Drawing number explanation:

[0031] 1. Inlet channel well; 2. Outlet channel well; 3. Inverted siphon; 4. Elbow; 5. Emergency outlet; 6. Maintenance connection well; 7. Rock layer; 8. Crushed stone layer; 9. Coarse sand layer; 10. Riverbed; 11. Longitudinal connecting pipe; 12. Lateral connecting pipe; 13. Through hole; 14. Limiting ring; 15. Limiting plate; 16. First rotating seat; 17. Connecting rod; 18. Support ring; 19. Second connecting seat; 20. Locking ring. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0034] Please refer to Figures 1 to 6 A multi-pipe parallel inverted siphon device capable of independent maintenance includes an inlet channel well 1 and an outlet channel well 2; several inverted siphons 3, which are arranged in parallel at intervals along the river channel, with both ends of each inverted siphon 3 connected to the inlet channel well 1 and the outlet channel well 2 respectively; elbows 4 located at the turning points of the inverted siphon 3, which are connected to the corresponding ends of the inverted siphon 3 to form an inverted siphon channel spanning the riverbed 10; a maintenance connection well 6 located in the low point area of ​​the inverted siphon 3, with through holes 13 for pipes to pass through the well wall; and a longitudinal connecting pipe 11 and a transverse connecting pipe 12 connected to the maintenance connection well 6. The longitudinal connecting pipe 11 is arranged along the parallel direction of the inverted siphon 3, and the transverse connecting pipe 12 is arranged along the direction intersecting with the parallel direction of the inverted siphon 3. It is connected to the maintenance connection well 6 through the through hole 13 so that the multiple inverted siphons 3 form a connection path for the parallel system. The emergency discharge outlet 5 is connected to the water inlet well 1 and is used for discharge in the event of an accident or maintenance. Several inverted siphons 3 are pipe groups laid in parallel on the same elevation foundation. Each inverted siphon 3 includes two bends 4 at both ends and a straight pipe section in the middle. The straight pipe section is located below the riverbed 10 and crosses the lowest section of the river.

[0035] By arranging multiple inverted siphons 3 in parallel and spaced along the river channel between the inlet channel 1 and the outlet channel 2, and setting elbows 4 at both ends of each inverted siphon 3 to form an inverted siphon channel spanning the riverbed 10, the system has natural redundancy while meeting the design flow rate: when any single pipe is unloaded or shut down, the remaining pipes can still handle the water flow, thus significantly improving operational continuity and risk resistance. At the same time, maintenance connection wells 6 are centrally located in the low-point areas of each inverted siphon 3, and through holes 13 are opened in the well walls, so that the longitudinal connecting pipe 11 and the transverse connecting pipe 12 are connected to the maintenance connection well 6 along the parallel direction and the direction intersecting with the parallel direction, respectively, thereby forming a parallel system connection among the multiple inverted siphons 3. The passageway, with its "low-point connection—in-well collection" structure, not only facilitates centralized venting, air removal, and sediment pumping during maintenance or accident operations, reducing the risks of air resistance, water hammer, and corrosion caused by residual water and stagnant air in the pipes, but also enables balanced distribution of pressure and water volume during operation through the connecting pipes. This reduces the risk of localized scouring or siltation caused by single-pipe flow deviation and provides interface conditions for subsequent expansion or phased construction. Its workflow is as follows: During normal operation, water flows from the inlet well 1 into the parallel-arranged inverted siphons 3. Guided by bends 4, the water descends from the upstream elevation, crosses the low section below the riverbed 10, and is then lifted again by bends 4 downstream to enter the outlet well 2. Because multiple inverted siphons 3 are in the same... The parallel laying of the foundation at the same elevation, along with the connecting passage formed by the longitudinal connecting pipe 11 and the transverse connecting pipe 12 at the maintenance connection well 6, allows for mutual head compensation between pipes and more uniform flow, thereby reducing local energy loss and improving system stability under the same water delivery capacity. When a single pipe is suspected of being blocked, worn, or requires periodic maintenance, the remaining inverted siphons 3 can be kept in continuous flow with priority, and only the target inverted siphon 3 needs to be switched: air is first discharged and vented through the maintenance connection well 6 and its connecting pipes, allowing the target pipe section to be quickly vented at the lowest point and the residual pressure released, avoiding the problems of difficult venting and long maintenance time of traditional inverted siphons. At the same time, the connecting pipes provide a controllable transition channel, making the venting and refilling process smoother. The process is more stable and causes less disturbance to the system. After the maintenance is completed, the air inside the pipe is gradually reinjected and discharged through the connecting pipe at the maintenance connection well 6, and then the target inverted siphon 3 is restored and connected to the parallel system, so as to achieve rapid restoration of operation under the condition of no water interruption or minimal water interruption, and reduce the impact of maintenance on water supply and drainage. When a sudden accident occurs (such as abnormal upstream water inflow, pipe damage or emergency discharge required), the accident discharge outlet 5 can be put into use. The accident discharge outlet 5 is connected to the inlet channel well 1, which can quickly discharge and control the water level of the upstream water body in the state of accident or maintenance. This not only avoids the overflow or abnormal structural stress caused by the rise of the water level in the inlet channel well 1, but also provides a safe and controllable "unloading" condition for the maintenance connection well 6 and the inverted siphon 3.

[0036] The maintenance connection well 6 is configured as at least one chamber. Through holes 13 are respectively opened on the opposite two sides of the chamber for the longitudinal connecting pipe 11 to pass through, and through holes 13 are respectively opened on the other opposite two sides of the chamber for the transverse connecting pipe 12 to pass through. This allows the longitudinal connecting pipe 11 and the transverse connecting pipe 12 to intersect in space in a cross shape and be connected at the maintenance connection well 6. A limiting ring 14 is provided at the edge of the through hole 13, and a limiting piece 15 is provided inside the maintenance connection well 6 to cooperate with the limiting ring 14. The limiting ring 14 is used to limit the position of the longitudinal connecting pipe 11 or the transverse connecting pipe 12, and the limiting piece 15... To prevent the longitudinal connecting pipe 11 or the transverse connecting pipe 12 from detaching during the maintenance swinging process, a locking ring 20 is provided in the middle of the outer periphery of the maintenance connection well 6. A support ring 18 is sleeved on both the longitudinal connecting pipe 11 and the transverse connecting pipe 12. Several first rotating seats 16 are provided on the outer surface of the maintenance connection well 6. Several second connecting seats 19 are provided on the outer periphery of the support ring 18. A connecting rod 17 is rotatably installed between several support rings 18 and second connecting seats 19, so that the longitudinal connecting pipe 11 or the transverse connecting pipe 12 can swing / deflect relative to the maintenance connection well 6 in the maintenance state.

[0037] The maintenance connection well 6 is configured with at least one chamber and through holes 13 on opposite sides of the well wall for the longitudinal connecting pipe 11 to pass through, and through holes 13 on the other opposite sides of the well wall for the transverse connecting pipe 12 to pass through. This allows the longitudinal connecting pipe 11 and the transverse connecting pipe 12 to form a cross-shaped spatial network with the maintenance connection well 6 as the node. Under normal operating conditions, this cross-shaped connection provides a low-point pressure equalization and balanced distribution channel between multiple inverted siphons 3, reducing the risk of flow deviation and scouring / siltation caused by local resistance differences in the parallel system. It also facilitates single-pipe switching or... It acts as a buffer during local fluctuations, thereby improving the overall hydraulic stability. During installation and maintenance, a limiting ring 14 is installed at the edge of the through hole 13 to limit the insertion position of the longitudinal connecting pipe 11 or the transverse connecting pipe 12 and ensure coaxiality and sealing reliability at the perforation point. A limiting piece 15, which cooperates with the limiting ring 14, is installed inside the maintenance connection well 6, ensuring that the pipeline remains constrained within a safe stroke during maintenance rotation and forming an anti-detachment limit, preventing the pipeline from slipping and detaching under stress or deflection, thus avoiding failure. Simultaneously, a locking ring 20 is installed at the center of the outer periphery of the maintenance connection well 6, and the longitudinal connecting pipe... 11 and the transverse connecting pipe 12 are fitted with a support ring 18, and a first rotating seat 16 is arranged on the outer surface of the maintenance connection well 6. A second connecting seat 19 is arranged on the outer periphery of the support ring 18. The two are rotatably connected by a connecting rod 17, so that the longitudinal connecting pipe 11 or the transverse connecting pipe 12 can achieve swing / deflection displacement relative to the maintenance connection well 6 in the maintenance state. When it is necessary to perform individual maintenance on a certain inverted siphon 3 or connecting pipe, the system is first switched to the maintenance condition and the low point channel is guided / depressurized through the maintenance connection well 6. Then, the locking ring 20 is loosened and the connecting rod 17 is rotated. Under dynamic constraints, the corresponding longitudinal connecting pipe 11 or transverse connecting pipe 12 can be controlled to swing, thereby quickly freeing up working space without damaging the perforated structure of the well wall. This facilitates operations such as pumping out sediment, endoscopic inspection, plugging / removing or replacing pipe sections. During maintenance, the limiting ring 14 and limiting plate 15 provide dual protection of "positioning + anti-detachment" and reduce the additional stress of the swing on the well wall and pipe interface. After maintenance, the swing pipe is reset and locked. The cross-shaped connecting network enables gradual reinjection and venting, allowing the system to resume operation more smoothly and shorten downtime.

[0038] The inverted siphon 3 is buried in the base structure below the riverbed 10. The base structure includes, from bottom to top, a rubble layer 7, a crushed stone layer 8, and a coarse sand layer 9. The inverted siphon 3 is set in the coarse sand layer 9. The rubble layer 7 is used for bearing, the crushed stone layer 8 is used for transition leveling, and the coarse sand layer 9 is used for sealing and shaping. The emergency discharge outlet 5 is set on the side of the inlet channel well 1 and is higher than the lowest point of the inverted siphon 3. The emergency discharge outlet 5 is connected to the maintenance connection well 6 or the inverted siphon 3, so that the inverted siphon channel can be quickly discharged and depressurized in the event of maintenance or blockage.

[0039] Specifically, the inverted siphon 3 is buried in the base structure below the riverbed 10. The base structure, from bottom to top, includes a rubble layer 7, a crushed stone layer 8, and a coarse sand layer 9, with the inverted siphon 3 placed within the coarse sand layer 9. During normal operation, the rubble layer 7 provides reliable load-bearing capacity to disperse the inverted siphon 3 and the overlying load, and resist the fluctuation of the base bearing capacity caused by long-term scouring of the riverbed 10. The crushed stone layer 8 serves as a transitional leveling layer, improving the flatness of the top surface of the rubble layer 7 and reducing stress concentration caused by uneven support on the pipe body. The coarse sand layer 9 encapsulates and shapes the inverted siphon 3 to ensure dense backfill and uniform stress. At the same time, the finer coarse sand particles reduce local wear on the pipe body caused by sharp, hard contact and facilitate construction adjustments to elevation and slope, thereby comprehensively improving the inverted siphon 3's resistance to settlement, scouring, and deformation in the riverbed 10 environment. The emergency discharge outlet 5 is located on the side of the inlet channel well 1, higher than the lowest point of the inverted siphon 3, and connected to the maintenance connection well 6 or The inverted siphon 3 is connected, enabling rapid drainage and pressure reduction using the elevation difference during accidents or maintenance: When the inverted siphon channel is blocked, at risk of damage, or when venting maintenance is required in the low-point area, the system can be switched to drainage / maintenance mode and the accident outlet 5 can be opened, allowing the water level in the inlet well 1 to be rapidly and controlled to decrease, and the upstream head to be unloaded in a timely manner. This reduces the pressure in the inverted siphon 3 and lowers the water hammer and structural risks caused by forced venting. At the same time, in conjunction with the maintenance connection well 6 to guide the drainage of the low-point connection channel, the residual water and trapped gas in the pipe can be removed more quickly, shortening the venting time and improving maintenance safety. After maintenance or disposal is completed, the accident outlet 5 is closed and the system is gradually reinjected and vented through the connection channel to restore normal water flow. Because the base structure provides stable support and encapsulation shaping, the pipe body is subjected to more uniform stress and has a lower risk of deformation during backfilling and refilling, thus ensuring the long-term stable operation of the device under the complex conditions of the riverbed 10.

[0040] The outer surface of the inverted siphon 3 is coated with an anti-corrosion coating, which can effectively prevent corrosion of the inverted siphon 3 when in contact with water flow and the external environment for a long time, thereby extending the service life of the device and ensuring the stability and reliability of the inverted siphon device. The inverted siphon 3 has an inner wall protrusion structure on the pipe wall. This protrusion structure can effectively reduce the adhesion and friction of the fluid when water flows through, reduce the energy loss of the water flow, and effectively improve the water flow efficiency of the inverted siphon device. The inverted siphon 3 monitors the internal water flow state and pipe stress through multiple vibration sensors. The sensors can provide real-time feedback on the water flow state and stress data of the inverted siphon 3 and transmit the data to the control system for automatic adjustment to prevent the device from malfunctioning under extreme conditions.

[0041] The outer surface of the inverted siphon 3 is coated with an anti-corrosion coating, forming an effective barrier when in contact with water flow and the external environment for extended periods. This reduces the risk of thinning and pitting corrosion caused by electrochemical corrosion and environmental media erosion, thereby extending its service life and improving the reliability of the inverted siphon channel. Simultaneously, an inner wall protrusion structure is incorporated into the inverted siphon 3, creating disturbance and a "re-adhesion" effect near the wall layer as water flows through. This reduces fluid adhesion and frictional resistance, minimizes energy loss, and improves flow efficiency. Especially in parallel systems operating for extended periods, this reduces energy consumption per unit of water transport and slows the adhesion of sediment and biofilm to the pipe wall. Furthermore, multiple vibration sensors are installed in the inverted siphon 3 to monitor the internal water flow and pipe stress changes, transmitting the data in real time. The data is transmitted to the control system. During normal operation, the control system can identify working conditions such as flow fluctuations, local blockage trends, water hammer impacts, or abnormal supports based on vibration and stress characteristics, and perform linkage adjustment and early warning. For example, when abnormal vibration or stress increase is detected, control strategies such as flow limiting / slow start-stop are triggered in a timely manner to suppress transient impacts, reduce structural fatigue accumulation, and prevent the expansion of faults. In the event of extreme water inflow or sudden changes in working conditions, early warning and optimization of operating parameters can also provide a time window for maintenance switching, thereby forming a closed-loop workflow of "corrosion resistance life improvement - hydraulic efficiency improvement - condition monitoring and adaptive adjustment". While ensuring the long-term stable operation of the inverted siphon device, it significantly improves the perceptibility and controllability of abnormal working conditions.

[0042] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary. Under the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0043] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A multi-tube parallel inverted siphon device that can be independently inspected and maintained, characterized in that, include: Inlet channel well (1) and outlet channel well (2); A number of inverted siphons (3) are arranged in parallel at intervals along the river channel, and the two ends of each inverted siphon (3) are respectively connected to the inlet channel well (1) and the outlet channel well (2); A bend (4) is provided at the turning point of the path of the inverted siphon (3), and the bend (4) is connected to the end of the corresponding inverted siphon (3) to form an inverted siphon channel that crosses the riverbed (10); The maintenance connection well (6) is located in the low point area of ​​the inverted siphon (3), and the well wall of the maintenance connection well (6) is provided with a through hole (13) for the pipeline to pass through. The longitudinal connecting pipe (11) and the transverse connecting pipe (12) are connected to the maintenance connection well (6), wherein the longitudinal connecting pipe (11) is arranged along the parallel direction of the inverted siphon (3), and the transverse connecting pipe (12) is arranged along the direction intersecting with the parallel direction of the inverted siphon (3), and is connected to the maintenance connection well (6) through the through hole (13) so that a connection path for a parallel system is formed between multiple inverted siphons (3); An accident discharge outlet (5) is connected to the water inlet well (1) and is used for discharge in case of an accident or maintenance.

2. The multi-tube parallel inverted siphon device capable of independent maintenance according to claim 1, characterized in that, Several of the inverted siphons (3) are pipe groups laid in parallel on the same elevation basis, and each of the inverted siphons (3) includes two sections of the elbows (4) at both ends and a straight pipe section in the middle. The straight pipe section is located below the riverbed (10) and crosses the lowest section of the river channel.

3. The multi-tube parallel inverted siphon device capable of independent maintenance according to claim 1, characterized in that, The maintenance connection well (6) is configured as at least one well chamber. The well walls on opposite sides of the well chamber are respectively provided with through holes (13) for the longitudinal connecting pipe (11) to pass through, and the well walls on the other opposite sides of the well chamber are respectively provided with through holes (13) for the transverse connecting pipe (12) to pass through, so that the longitudinal connecting pipe (11) and the transverse connecting pipe (12) are cross-shaped in space and connected by the maintenance connection well (6) as a node.

4. A multi-tube parallel inverted siphon device capable of independent maintenance according to claim 3, characterized in that, A limiting ring (14) is provided at the edge of the through hole (13), and a limiting piece (15) that cooperates with the limiting ring (14) is provided on the inner side of the maintenance connection well (6). The limiting ring (14) is used to limit the position of the longitudinal connecting pipe (11) or the transverse connecting pipe (12). The limiting piece (15) is used to prevent the longitudinal connecting pipe (11) or the transverse connecting pipe (12) from falling off during the maintenance swing. A locking ring (20) is provided in the middle of the outer periphery of the maintenance connection well (6).

5. A multi-tube parallel inverted siphon device capable of independent maintenance according to claim 1, characterized in that, Both the longitudinal connecting pipe (11) and the transverse connecting pipe (12) are fitted with support rings (18). Several first rotating seats (16) are provided on the outer surface of the maintenance connection well (6). Several second connecting seats (19) are provided on the outer periphery of the support rings (18). Connecting rods (17) are rotatably installed between several support rings (18) and second connecting seats (19), so that the longitudinal connecting pipe (11) or the transverse connecting pipe (12) can swing / deflect relative to the maintenance connection well (6) in the maintenance state.

6. A multi-tube parallel inverted siphon device capable of independent maintenance according to claim 1, characterized in that, The inverted siphon (3) is buried in the base structure below the riverbed (10). The base structure includes, from bottom to top, a rubble layer (7), a crushed stone layer (8), and a coarse sand layer (9). The inverted siphon (3) is set in the coarse sand layer (9). The rubble layer (7) is used for bearing, the crushed stone layer (8) is used for transition leveling, and the coarse sand layer (9) is used for encapsulation and shaping.

7. A multi-tube parallel inverted siphon device capable of independent maintenance according to claim 6, characterized in that, The accident outlet (5) is located on the side of the water inlet well (1) and at a lower point higher than the inverted siphon (3). The accident outlet (5) is connected to the maintenance connection well (6) or the inverted siphon (3) to achieve rapid discharge and pressure reduction of the inverted siphon channel during maintenance or blockage accidents.

8. A multi-tube parallel inverted siphon device capable of independent maintenance according to claim 1, characterized in that, The outer surface of the inverted siphon (3) is coated with an anti-corrosion coating, which can effectively prevent the inverted siphon (3) from corroding when it is in contact with water flow and the external environment for a long time, thereby extending the service life of the device and ensuring the stability and reliability of the inverted siphon device.

9. A multi-tube parallel inverted siphon device capable of independent maintenance according to claim 8, characterized in that, The inverted siphon (3) has an inner wall protrusion structure on its pipe wall. This protrusion structure can effectively reduce the adhesion and friction of the fluid when water flows through, reduce the energy loss of the water flow, and effectively improve the water flow efficiency of the inverted siphon device.

10. A multi-tube parallel inverted siphon device capable of independent maintenance according to claim 9, characterized in that, The inverted siphon (3) monitors the internal water flow status and pipe stress through multiple vibration sensors. The sensors can provide real-time feedback on the water flow status and stress data of the inverted siphon (3) and transmit the data to the control system for automatic adjustment to prevent the device from malfunctioning under extreme conditions.

Images