Combined system buried culvert and buried culvert pipe network sediment automatic control system

Abstract

The utility model discloses a combined system buried culvert and buried culvert pipe network sediment automatic control system, the tail end outlet of the buried culvert is adjacent to a riverway, a closure groove is arranged in the buried culvert, a gate is arranged at the tail end outlet of the buried culvert, and the gate separates the water body communication between the buried culvert and the riverway. A sediment washing area is arranged in the area between the intercepting groove and the gate, and when the buried culvert drains water to the river channel, pipe network sediments in the water body settle in the sediment washing area in a concentrated mode. The automatic control system automatically manages pipe network sediments in the combined system buried culvert, the sediment flushing area is sealed in the buried culvert in dry days, the river channel is prevented from being polluted, odor is prevented from overflowing, the sediment flushing area is conveniently backwashed through river channel water, the river channel desilting frequency and cost are effectively reduced, and the river channel desilting efficiency is improved. And the labor intensity for cleaning the buried culvert is reduced.

Description

Technical Field

[0001] The utility model relates to the field of drainage systems, in particular to a combined sewer culvert and an automatic control system for sediments in a culvert pipe network. Background Art

[0002] Common culverts are mainly formed by straightening a large number of sources or small rivers, covering open channels or replacing them with box culverts. These culverts are mainly used to transport sewage in dry days. When the river channel is culverted, the original rainwater discharge channel still discharges into the culvert. During the rainy season, a large amount of rainwater will flow in, causing the combined sewerage system to exceed the treatment capacity of the downstream sewage treatment plant, and then combined sewer overflow (CSO) pollution will occur at the end of the culvert. It is very easy to cause pollution to the downstream river. If unreasonable sewage interception or overflow discharge settings are made at the end of the culvert, it is more likely to aggravate overflow pollution emissions.

[0003] The main method of culvert renovation is "separation of clean and dirty water", which has a better effect, but also has the characteristics of large capital investment and high construction difficulty. Most projects adopt the method of intercepting sewage at the end of the culvert, but this method often has problems such as poor hydraulic conditions during dry days, high water level operation of the pipeline network, slow flow rate, and easier deposition of pipeline network sediments in the culvert; on rainy days, the culvert loses its storage capacity, drainage is not smooth, and a large amount of pipeline network sediments rush into the river, causing river pollution.

[0004] In addition, a large amount of pipeline sediment is easily deposited in the area within 100 to 200 meters downstream from the outlet of a large culvert or in the energy dissipation pool and sea flooding and other anti-impact measures at the outlet of the culvert, which often requires large-scale manual dredging. The black and smelly situation of the river channel or open channel is more obvious before dredging.

[0005] Patent CN207109987U uses upstream sewage to flush sediments into the entire interception well. Part of it can enter the sewage interception pipe, but there are still dead water areas that need to be manually managed, such as sediments and floating garbage within the gate and artificial flat grille range. Regular cleaning requires a lot of manual labor, and this patent is applicable to the outlet end and the construction area, but not to the construction inside the culvert.

[0006] Patent CN217480367U sets a water retaining weir and the outer cover of the water diversion pipe reduces the cross-sectional size of the culvert. With the improvement of flood control and drainage standards, this structural form is not conducive to drainage on rainy days. Moreover, this structural form is suitable for areas where there is a large amount of clean water in the culvert even in dry days. However, in reality, urban culverts often lack clean water on dry days, but are mainly composed of a large amount of sewage. The applicability of this technical solution is relatively low.

[0007] In view of the above technical problems, the present utility model is specially introduced. Summary of the invention

[0008] The main purpose of the utility model is to provide a combined sewer culvert and culvert pipe network sediment automatic control system for better automatic management of pipe network sediment in the culvert, reduce the intensity of manual operation and prevent overflow pollution and other problems.

[0009] In order to achieve the above-mentioned object, according to one aspect of the utility model, a combined sewer culvert is provided, wherein the terminal outlet of the culvert is adjacent to the river channel, and a intercepting trough is arranged in the culvert;

[0010] A gate is installed at the end outlet of the culvert, which separates the water body between the culvert and the river channel. In the culvert, a sedimentation and flushing area is set up in the area from the interception channel to the gate. When the culvert discharges water into the river channel, the pipe network sediments in the water body are concentrated and settled in the sedimentation and flushing area.

[0011] Furthermore, a transition zone is provided in the area between the sedimentation and flushing area and the intercepting trough, and the width of the transition zone gradually increases in the direction from the intercepting trough to the sedimentation and flushing area, so that the flow velocity is slowed down to facilitate sedimentation.

[0012] Furthermore, the length of the sedimentation and flushing zone accounts for more than 60% of the distance between the gate and the intercepting channel.

[0013] Furthermore, the distance between the gate and the intercepting channel is in the range of 50m to 150m.

[0014] Furthermore, the sedimentation and flushing area is divided into a plurality of sedimentation and flushing partitions along the width direction of the culvert, the gate includes a plurality of sub-gates, and a plurality of sub-gates are correspondingly arranged at the ends of the plurality of sedimentation and flushing partitions.

[0015] Furthermore, a sludge retaining weir is arranged on the outer side of the gate toward the river channel, and the sludge retaining weir blocks the pipe network sediments in the sedimentation and flushing area.

[0016] Furthermore, a hydraulic flushing gate is provided on the mud retaining weir, and the height of the hydraulic flushing gate is consistent with that of the mud retaining weir.

[0017] Furthermore, a plurality of mud retaining weirs are respectively arranged on the outer sides of the plurality of branch gates, and a plurality of hydraulic flushing gates are respectively arranged on the plurality of mud retaining weirs.

[0018] Furthermore, an intercepting pipe is arranged in the intercepting trough, the intercepting pipe extends to be connected to the sewage treatment plant, and the intercepting pipe has an opening in the intercepting trough.

[0019] Furthermore, the intercepting groove is opened on the bottom surface of the culvert, and the top elevation of the intercepting pipe is lower than the elevation of the bottom surface.

[0020] Furthermore, a flow limiting valve is provided at the opening of the intercepting pipe, and the flow limiting valve controls the flow in the intercepting pipe by adjusting the opening.

[0021] Furthermore, the intercepting groove runs through the width direction of the culvert and extends into the side wall of the culvert.

[0022] Furthermore, a guide groove is provided at the bottom of the intercepting groove.

[0023] The application of the hidden technical solution of the utility model achieves at least the following beneficial effects:

[0024] 1. The culvert of the present application sets up a sedimentation and flushing area in a section of the area at the end of the culvert, and designs a transition zone to slow down the flow rate and speed up the sedimentation rate, so that the pipe network sediments in the culvert can be concentrated in the sedimentation and flushing area in large quantities, which is convenient for centralized management.

[0025] 2. The culvert of this application separates the sedimentation and flushing area from the river channel by setting up gates, and encloses the sedimentation and flushing area inside the culvert on dry days to avoid polluting the river channel and preventing odor from overflowing. It is also convenient to use river water to backwash the sedimentation and flushing area, effectively reducing the frequency and cost of river channel dredging and reducing the labor intensity of cleaning the culvert.

[0026] 3. The culvert of the present application prevents a large amount of pipe network sediment in the sedimentation and flushing area from being flushed into the river channel by setting up a mud retaining weir and a hydraulic flushing gate outside the gate without affecting the drainage of the culvert, and opening the hydraulic flushing gate during backwashing can achieve a better flushing effect.

[0027] 4. The culvert of the present application designs the position and structure of the intercepting trough inside the culvert, and controls the flow of the intercepting pipe with a flow limiting valve, so that the intercepting trough, gate, sedimentation and flushing area, etc. together form a control system for the sewage and pipe network sediments inside the culvert. The overall structure has a wide range of applications and low construction costs. The opening of the flow limiting valve and the opening and closing of the gate can be controlled by manual or automatic control, thereby achieving effective management of the sewage and pipe network sediments at the end of the culvert.

[0028] In order to achieve the above-mentioned purpose, according to another aspect of the utility model, an automatic control system for culvert pipe network sediments is proposed, which is used to control the pipe network sediments in the above-mentioned culvert. The automatic control system includes a data collection and processing unit, which is connected to the sensor component, the flow limiting valve and the gate. The data collection and processing center collects data information transmitted by the sensor component and issues instructions to control the opening of the flow limiting valve and the opening and closing of the gate.

[0029] Furthermore, the sensor assembly includes a culvert liquid level meter, which is arranged in the culvert.

[0030] Furthermore, the sensor assembly includes a sewage treatment plant level meter, which reflects the current sewage treatment capacity of the sewage treatment plant.

[0031] Furthermore, the sensor assembly includes a rain gauge, which is arranged at the terminal outlet of the culvert.

[0032] Furthermore, the sensor assembly includes a flow meter, which is arranged in the intercepting pipe and is used to measure the flow in the intercepting pipe.

[0033] Furthermore, the data collection and processing unit is connected to the hydraulic flushing door, and the data collection and processing center controls the opening and closing of the hydraulic flushing door.

[0034] Furthermore, the data collection and processing unit is connected to a plurality of sub-gates, and opens or closes the plurality of sub-gates in sequence.

[0035] The application of the technical solution of the automatic control system for sediment in the culvert pipe network of the utility model achieves at least the following beneficial effects:

[0036] 1. The automatic control system proposed in this application designs data collection and processing units and sensor components, so that the real-time data of monitoring equipment such as culvert liquid level, rainfall, and sewage treatment plants can be transmitted to the data collection and processing unit for data processing and to issue control instructions to equipment such as gates and flow limiting valves. Real-time control and remote unmanned control can be achieved through intelligent algorithms, thereby improving the intelligence level of culvert control and achieving the goals of stabilizing the water inflow of sewage treatment plants, reducing culvert overflow pollution, and reducing the intensity of manual dredging.

[0037] 2. The automatic control system proposed in this application can automatically decide the best time to act based on online monitoring data, to avoid acting too early, causing the culvert to fail to play the role of storage space and sewage overflow to pollute the river, and to avoid acting too late, exceeding the treatment capacity of the sewage treatment plant and affecting effective drainage upstream. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0039] Figure 1 A schematic diagram showing the overall arrangement of the culvert end and the intercepting trough of an embodiment is shown;

[0040] Figure 2 A schematic diagram of the culvert end and the bottom surface of the intercepting trough of an embodiment is shown;

[0041] Figure 3 A schematic diagram of a transition zone of an embodiment is shown;

[0042] Figure 4 A schematic diagram of an automatic control system for sediment in a culvert network according to an embodiment is shown.

[0043] The above drawings include the following reference numerals:

[0044] 1. Intercepting trough; 2. Intercepting pipe; 3. Gate; 4. Sedimentation and flushing area; 5. Mud retaining weir; 6. Hydraulic flushing gate; 7. Sedimentation and flushing partition; 8. Flow limiting valve; 9. Transition zone; 10. River channel; 11. Flow meter; 12. Culvert level gauge; 13. Rain gauge; 14. Recycled water replenishment pipe. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0046] The present invention is further described in detail below in conjunction with specific embodiments, and these embodiments cannot be understood as limiting the scope of protection claimed by the present invention. The term "including" indicates the existence of a feature when used, but does not exclude the existence or addition of one or more other features; the orientation or position relationship indicated by the terms "lateral", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0047] In the description, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0048] Embodiment 1:

[0049] The present application proposes a combined sewer culvert, the terminal outlet of which is adjacent to a river-like open channel such as a river 10. An interception trough 1 is provided in the culvert, an interception pipe 2 is provided in the interception trough 1, the interception pipe 2 extends to connect to a sewage treatment plant, and the interception pipe 2 has an opening in the interception trough 1. The water in the culvert flows into the interception pipe through the opening and flows to the sewage treatment plant for treatment.

[0050] A gate 3 is provided at the end outlet of the culvert, which blocks the water connection between the culvert and the river 10. The combined sewer culvert receives domestic sewage and rainwater from various places, which will produce a large amount of pipe network sediment. In the culvert, a sedimentation and flushing area 4 is provided in the area between the interception trough 1 and the gate 3. When the culvert discharges water to the river 10, the pipe network sediment in the water body will be concentrated and precipitated in the sedimentation and flushing area 4.

[0051] Combination Figure 1 and Figure 3 As shown, a transition zone 9 is provided so that the sedimentation pipe network sediment can be concentrated in the sedimentation and flushing zone 4. A transition zone 9 is provided in the area between the sedimentation and flushing zone 4 and the intercepting trough 1. The width of the transition zone 9 gradually increases along the direction from the intercepting trough 1 to the sedimentation and flushing zone 4, so that the flow rate is slowed down to facilitate sedimentation. Preferably, the two ends of the sedimentation and flushing zone 4 are the gate 3 and the transition zone 9, respectively.

[0052] When the water in the culvert flows toward the river channel 10, the flow velocity decreases rapidly and the flow width increases in the transition zone, which facilitates the concentrated sedimentation of pipe network sediments in the water in the sedimentation and flushing zone 4. The culvert of the present application sets a sedimentation and flushing zone in a section of the end of the culvert, and designs a transition zone to slow down the flow velocity and speed up the sedimentation speed, so that the pipe network sediments in the culvert can be concentrated in the sedimentation and flushing zone in large quantities, which is convenient for centralized management.

[0053] The culvert of the present application separates the sedimentation and flushing area from the river channel by setting a gate, and seals the sedimentation and flushing area 4 inside the culvert on dry days to avoid polluting the river channel and prevent the odor in the culvert from overflowing, and also prevents the river channel water from flowing back into the culvert, and conveniently uses the water in the river channel 10 to reversely flush the sedimentation and flushing area 4. Compared with the prior art in which a large amount of pipe network sediment in the culvert enters the river channel, the frequency and cost of river channel desilting are effectively reduced, and the labor intensity of cleaning the culvert is reduced.

[0054] In this application, if Figure 1 and Figure 2 As shown, the distance A between the gate 3 and the intercepting trough 1 is within the range of 50-150m. And preferably, the length of the sedimentation and flushing area 4 accounts for more than 60% of the distance between the gate 3 and the intercepting trough 1. The design of this distance can achieve a better centralized sedimentation effect in the sedimentation and flushing area, and it is convenient to use river water to backwash the sedimentation and flushing area. The backwashing water can flush the pipe network sediment into the intercepting trough 1, and finally treat the pipe network sediment through the sewage treatment plant. Between the intercepting trough 1 and the gate 3, no other drainage pipe network access is arranged in the culvert to prevent affecting the sedimentation and flushing area.

[0055] like Figure 2 and Figure 3As shown, the sedimentation and flushing area 4 is divided into a plurality of sedimentation and flushing partitions 7 along the width direction of the culvert, and the gate 3 includes a plurality of sub-gates, and a plurality of sub-gates are correspondingly arranged at the ends of the plurality of sedimentation and flushing partitions 7. Preferably, if the culvert is a two-hole culvert upstream of the sedimentation and flushing area 4, the cross-sectional width increases after passing through the transition area 9, and the sedimentation and flushing area 4 can be arranged to have three or more flow channels. As shown in the figure, it is divided into three sedimentation and flushing partitions 7, so that there are three sub-gates corresponding to the downstream. In this way, when the gate 3 is opened or closed, a plurality of sub-gates can be opened or closed in sequence. When rainfall occurs, the overflow volume gradually increases, and when rainfall ends, the overflow volume gradually decreases. Each sub-gate can be opened or closed step by step according to the overflow volume to more accurately control the overflow volume and reduce the total overflow volume.

[0056] In addition, a mud retaining weir 5 is arranged outside the gate 3 toward the river channel 10, and the mud retaining weir 5 blocks the pipe network sediment in the sedimentation and flushing area 4. The height of the mud retaining weir 5 is slightly higher than the bottom surface of the culvert, but much lower than the height of the gate. Preferably, a hydraulic flushing gate 6 is arranged on the mud retaining weir 5, and the height of the hydraulic flushing gate 6 is consistent with the mud retaining weir 5. The culvert of the present application prevents a large amount of pipe network sediment in the sedimentation and flushing area from being flushed into the river channel without affecting the drainage of the culvert by setting a mud retaining weir and a hydraulic flushing gate outside the gate, and opening the hydraulic flushing gate during backwashing can achieve a better flushing effect.

[0057] Preferably, a plurality of mud retaining weirs 5 are respectively provided on the outer sides of the plurality of sub-gates, and a plurality of hydraulic flushing gates 6 are respectively provided on the plurality of mud retaining weirs 5.

[0058] Preferably, a recycled water replenishment pipe 14 is provided somewhere in the river channel, so that the water level of the river channel at the junction of the river channel and the end of the culvert can be better controlled to form the required water level difference between the river channel and the culvert, thereby facilitating backwashing and drainage operations.

[0059] like Figure 2 As shown, the intercepting groove 1 is opened on the bottom surface of the culvert, and the top elevation of the intercepting pipe 2 is lower than the elevation of the bottom surface. A flow limiting valve 8 is arranged at the opening of the intercepting pipe 2, and the flow limiting valve 8 controls the flow in the intercepting pipe 2 by adjusting the opening. The intercepting groove 1 runs through the width direction of the culvert and extends into the side wall of the culvert. The opening of the intercepting pipe 2 is located on the side wall of the intercepting groove.

[0060] A guide groove is provided at the bottom of the intercepting trough 1. The guide groove is used to prevent the pipe network sediment from being deposited at the bottom of the intercepting trough and blocking the opening of the intercepting pipe, thereby reducing the desilting intensity of the intercepting trough by personnel.

[0061] The culvert of the present application designs the position and structure of the intercepting trough inside the culvert, and controls the flow of the intercepting pipe with a flow limiting valve, so that the intercepting trough, gate, sedimentation and flushing area, etc. together form a control system for the sewage and pipe network sediments inside the culvert. The opening of the flow limiting valve and the opening and closing of the gate are controlled by manual or automatic control, thereby achieving effective management of the sewage and pipe network sediments at the end of the culvert.

[0062] Specifically, the control methods for sewage at the end of the culvert and pipe network sediment are as follows:

[0063] In dry weather, the gate 3 is closed to isolate the culvert, and the opening of the limiting valve 8 can be adjusted to the maximum. By controlling its opening, the water body in the culvert can be kept at a low water level at all times, reducing the siltation of the culvert and preparing for rainy days.

[0064] On rainy days, the culvert can be used as a storage space to control the gate from opening too early, thereby preventing sewage from overflowing into the river. When the rainfall is too heavy, resulting in insufficient treatment capacity of the sewage treatment plant or too high liquid level in the culvert, the gate 3 can be opened in time. The opening of the flow limiting valve 8 can be closed or reduced to stop the delivery of sewage to the sewage treatment plant.

[0065] The sub-gates are opened one by one according to the situation to discharge the combined sewage in the culvert. During the discharge process, the pipe network sediments in the water body are concentrated in the sedimentation and flushing area 4 and precipitated. Due to the effect of the mud retaining weir 5, the pipe network sediments will not be flushed into the river channel to cause pollution.

[0066] After the rain, the gates are closed one by one, the water level in the culvert drops, and conventional means can be used to desilt and maintain the sedimentation and flushing area 4. The gates 3 and multiple hydraulic flushing gates 6 can also be opened automatically or manually, and the opening of the flow limiting valve 8 is also the largest, so that the river water is led to backwash the sedimentation and flushing area 4, flushing the pipe network sediments into the interception tank and finally into the sewage treatment plant.

[0067] In summary, from the above description, it can be seen that the above-mentioned embodiment 1 of the utility model achieves the following technical effects:

[0068] 1. The culvert of the present application sets up a sedimentation and flushing area in a section of the area at the end of the culvert, and designs a transition zone to slow down the flow rate and speed up the sedimentation rate, so that the pipe network sediments in the culvert can be concentrated in the sedimentation and flushing area in large quantities, which is convenient for centralized management.

[0069] 2. The culvert of this application separates the sedimentation and flushing area from the river channel by setting up gates, and encloses the sedimentation and flushing area inside the culvert on dry days to avoid polluting the river channel and preventing odor from overflowing. It is also convenient to use river water to backwash the sedimentation and flushing area, effectively reducing the frequency and cost of river channel dredging and reducing the labor intensity of cleaning the culvert.

[0070] 3. The culvert of the present application prevents a large amount of pipe network sediment in the sedimentation and flushing area from being flushed into the river channel by setting up a mud retaining weir and a hydraulic flushing gate outside the gate without affecting the drainage of the culvert, and opening the hydraulic flushing gate during backwashing can achieve a better flushing effect.

[0071] 4. The culvert of the present application controls the flow of the intercepting pipe by designing the position and structure of the intercepting trough inside the culvert and the flow limiting valve, so that the intercepting trough, gate, sedimentation and flushing area, etc. together form a control system for the sewage and pipe network sediments inside the culvert. The opening of the flow limiting valve and the opening and closing of the gate are controlled by manual or automatic control, so as to achieve effective management of the sewage and pipe network sediments at the end of the culvert.

[0072] Embodiment 2:

[0073] This application proposes an automatic control system for sediment in a culvert pipe network, which is used to control the sediment in the pipe network in the culvert according to the above design, such as Figure 4 As shown, the automatic control system includes a data collection and processing unit, which is connected to the sensor component, the flow limiting valve and the gate. The data collection and processing center collects data information transmitted by the sensor component and issues instructions to control the opening of the flow limiting valve and the opening and closing of the gate.

[0074] Preferably, the data collection and processing unit is connected to the hydraulic flushing door 6 , and the data collection and processing center can also control the opening and closing of the hydraulic flushing door 6 .

[0075] Specifically, combined Figure 1 and Figure 4 As shown, the sensor assembly includes a culvert level meter 12, which is arranged in the culvert. The sensor assembly also includes a sewage treatment plant level meter, which reflects the current sewage treatment capacity of the sewage treatment plant. The sensor assembly also includes a rain gauge 13, which is arranged at the end outlet of the culvert.

[0076] Preferably, each monitoring device in the sensor assembly transmits real-time monitoring data to a PLC control station at the hydraulic flushing door, gate and flow limiting valve, and to a remote control platform by wired or wireless transmission.

[0077] like Figure 2 As shown, the sensor assembly includes a flow meter 11 , which is disposed in the intercepting tube 2 and is used to measure the flow in the intercepting tube 2 .

[0078] Preferably, the data collection and processing units are respectively connected to a plurality of sub-gates to open or close the plurality of sub-gates in sequence.

[0079] The automatic control system proposed in this application designs data collection and processing units and sensor components, so that real-time data from monitoring equipment such as culvert liquid level, rainfall, and sewage treatment plants can be transmitted to the data collection and processing unit for data processing and to issue control instructions to equipment such as gates and flow limiting valves. Real-time control and remote unmanned control can be achieved through intelligent algorithms, thereby improving the intelligence level of culvert control and achieving goals such as stabilizing the water inlet of sewage treatment plants, reducing culvert overflow pollution, and reducing the intensity of manual dredging.

[0080] This application also proposes a preferred data collection and processing unit control logic and an automatic control method for culvert pipe network sediments:

[0081] When the rain gauge reading is ≥A1mm / h or the culvert level gauge reading is ≥B1m, and the level gauge reading in the sewage treatment plant's lift pump room is ≥C1m, the adjustment is automatically started to close the electric flow limiting valve and open the electric flat gate at the end of the culvert, so that the level gauge reading in the sewage treatment plant's lift pump room always remains ≤C1m.

[0082] When the rain gauge reading is ≤A1mm / h and the culvert liquid level gauge reading is ≤B1m, and the sewage treatment plant lift pump room liquid level gauge reading is ≤C1m, the culvert electric flat gate will be automatically closed and the electric flow limiting valve will be fully opened.

[0083] After the rain, according to the river level and the dredging and maintenance needs of the culvert sedimentation and flushing area, the electric flat gate and hydraulic flushing gate of the culvert are opened manually or automatically, and closed after the flushing is completed, so as to meet the backwashing maintenance needs of the culvert sedimentation and flushing area.

[0084] In summary, from the above description, it can be seen that the above-mentioned embodiment 2 of the present invention achieves the following technical effects:

[0085] 1. The automatic control system proposed in this application designs data collection and processing units and sensor components, so that the real-time data of monitoring equipment such as culvert liquid level, rainfall, and sewage treatment plants can be transmitted to the data collection and processing unit for data processing and to issue control instructions to equipment such as gates and flow limiting valves. Real-time control and remote unmanned control can be achieved through intelligent algorithms, thereby improving the intelligence level of culvert control and achieving the goals of stabilizing the water inflow of sewage treatment plants, reducing culvert overflow pollution, and reducing the intensity of manual dredging.

[0086] 2. The automatic control system proposed in this application can automatically decide the best time to act based on online monitoring data, to avoid acting too early, causing the culvert to fail to play the role of storage space and sewage overflow to pollute the river, and to avoid acting too late, exceeding the treatment capacity of the sewage treatment plant and affecting effective drainage upstream.

[0087] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A combined sewer culvert, wherein the terminal outlet of the culvert is adjacent to a river channel (10), and a intercepting trough (1) is arranged in the culvert, characterized in that: A gate (3) is provided at the terminal outlet of the culvert, and the gate (3) blocks the water connection between the culvert and the river channel (10). In the culvert, a sedimentation and flushing area (4) is provided in the area between the intercepting trough (1) and the gate (3). When the culvert discharges water into the river channel (10), pipe network sediments in the water body are concentrated and precipitated in the sedimentation and flushing area (4).

2. The hidden culvert according to claim 1, characterized in that: A transition zone (9) is provided in the area between the sedimentation and flushing area (4) and the intercepting trough (1), and the width of the transition zone (9) gradually increases in the direction from the intercepting trough (1) to the sedimentation and flushing area (4), so that the flow rate is slowed down to facilitate sedimentation.

3. The hidden culvert according to claim 2, characterized in that: The length of the sedimentation and flushing area (4) accounts for more than 60% of the distance between the gate (3) and the intercepting trough (1).

4. The culvert according to claim 3, characterized in that: The distance between the gate (3) and the intercepting trough (1) is in the range of 50m to 150m.

5. The crypt according to any one of claims 1 to 4, characterized in that: The sedimentation and flushing area (4) is divided into a plurality of sedimentation and flushing partitions (7) along the width direction of the culvert, and the gate (3) comprises a plurality of sub-gates, and a plurality of sub-gates are correspondingly arranged at the ends of the plurality of sedimentation and flushing partitions (7).

6. The culvert according to claim 5, characterized in that: A mud retaining weir (5) is arranged on the outer side of the gate (3) toward the river channel (10), and the mud retaining weir (5) blocks the pipe network sediment in the sedimentation and flushing area (4).

7. The culvert according to claim 6, characterized in that: The mud retaining weir (5) is provided with a hydraulic flushing door (6), and the height of the hydraulic flushing door (6) is consistent with that of the mud retaining weir (5).

8. The culvert according to claim 7, characterized in that: A plurality of mud retaining weirs (5) are respectively arranged on the outer sides of the plurality of branch gates, and a plurality of hydraulic flushing gates (6) are respectively arranged on the plurality of mud retaining weirs (5).

9. The culvert according to claim 1, characterized in that: An intercepting pipe (2) is arranged in the intercepting trough (1), the intercepting pipe (2) extends to be connected to a sewage treatment plant, and the intercepting pipe (2) has an opening in the intercepting trough (1).

10. The culvert according to claim 9, characterized in that: The intercepting groove (1) is opened on the bottom surface of the culvert, and the top elevation of the intercepting pipe (2) is lower than the elevation of the bottom surface.

11. The culvert according to claim 9, characterized in that: A flow limiting valve (8) is provided at the opening of the intercepting pipe (2), and the flow limiting valve (8) controls the flow rate in the intercepting pipe (2) by adjusting the opening.

12. The culvert according to claim 9, characterized in that: The intercepting groove (1) runs through the width direction of the culvert and extends into the side wall of the culvert.

13. The culvert according to claim 9, characterized in that: A guide groove is provided at the bottom of the intercepting groove (1).

14. An automatic control system for sediment in a culvert network, characterized by: Used to control the pipe network sediment in the culvert according to any one of claims 1 to 13 above, the automatic control system includes a data collection and processing unit, the data collection and processing unit is connected to the sensor assembly, the flow limiting valve (8) and the gate (3), the data collection and processing center collects data information transmitted by the sensor assembly, and issues instructions to control the opening of the flow limiting valve (8) and the opening and closing of the gate (3).

15. The automatic control system according to claim 14, characterized in that: The sensor assembly comprises a culvert liquid level meter (12), and the culvert liquid level meter (12) is arranged in the culvert.

16. The automatic control system according to claim 15, characterized in that: The sensor assembly comprises a sewage treatment plant liquid level meter, and the sewage treatment plant liquid level meter reflects the current sewage treatment capacity of the sewage treatment plant.

17. The automatic control system according to claim 15, characterized in that: The sensor assembly comprises a rain gauge (13), and the rain gauge (13) is arranged at the terminal outlet of the culvert.

18. The automatic control system according to claim 14, characterized in that: The sensor assembly comprises a flow meter (11), which is arranged in the intercepting pipe (2) and is used to measure the flow in the intercepting pipe (2).

19. The automatic control system according to claim 14, characterized in that: The data collection and processing unit is connected to the hydraulic flushing door (6), and the data collection and processing center controls the opening and closing of the hydraulic flushing door (6).

20. The automatic control system according to claim 14, characterized in that: The data collection and processing unit is connected to a plurality of sub-gates and opens or closes the plurality of sub-gates in sequence.

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