Foldable inflatable pulse flushing device and system suitable for large rainwater culverts

Abstract

This utility model relates to a foldable inflatable pulse flushing device and system suitable for large rainwater culverts. It includes a support frame, a flexible inflatable dam, an inflation component, and a deflation component. The support frame is mounted on the bottom plate of the culvert, and the flexible inflatable dam is housed within the support frame. The bottom of the flexible inflatable dam is fixedly connected to the bottom plate of the culvert. Both sides of the flexible inflatable dam are slidably connected to the side walls of the support frame. The flexible inflatable dam is connected to both the inflation component and the deflation component. During non-rainstorm periods, the flexible inflatable dam is inflated to form a water-blocking structure to accumulate water head, and rapid deflation generates a pulse water flow for sludge removal. During rainstorm periods, the flexible inflatable dam is deflated and folded up, reducing drainage resistance and replacing traditional rigid gates. This significantly reduces construction and maintenance costs. It is suitable for large rainwater culverts with gentle slopes, overcoming the limitations of traditional technologies that rely on terrain elevation differences. The foldable dam reduces head loss and is suitable for extremely flat areas.

Description

Technical Field

[0001] This utility model relates to the field of municipal drainage engineering technology, and in particular to a sediment pulse flushing device and system for large rainwater culverts. Background Technology

[0002] Currently, large stormwater culverts are prone to sediment accumulation during long-term operation, leading to a decrease in water flow capacity. Traditional dredging methods, including manual cleaning, high-pressure water flushing, and sludge pump suction, are generally inefficient and costly. While pulsed water flow flushing technology has been proposed, it faces the following challenges in practical application:

[0003] 1. In flat terrain, gravity flow pipes and channels have limited head, and pulse devices can easily increase head loss, affecting normal drainage;

[0004] 2. Siphon pulse devices may become a draining obstacle during heavy rain, and may even cause water backlog.

[0005] 3. Mobile devices require frequent disassembly, resulting in high maintenance costs and poor reliability. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to address the shortcomings of the prior art by providing a sediment pulse flushing device for large rainwater culverts. During non-rainstorm periods, it forms a water-blocking structure by inflating to accumulate water head and generates pulse water flow to clear silt by rapidly deflating; during rainstorm periods, it is folded up to reduce drainage resistance.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A sediment pulse flushing device for large rainwater culverts includes a support frame, a flexible inflatable dam, an inflation component, and a deflation component. The support frame is set on the bottom plate of the culvert, the flexible inflatable dam is set inside the support frame, and the bottom of the flexible inflatable dam is connected and fixed to the bottom plate of the culvert. The two sides of the flexible inflatable dam are slidably connected to the side walls of the support frame, and the flexible inflatable dam is connected to the inflation component and the deflation component. The two sides of the flexible inflatable dam can slide up and down along the side walls of the support frame when inflating and deflation.

[0008] The beneficial effects of this utility model are as follows: The sediment pulse flushing device for large rainwater culverts of this utility model forms a water-blocking structure to accumulate water head by inflating the flexible inflatable dam body during non-rainstorm periods, and quickly deflating it to generate pulse water flow for sludge removal; during rainstorm periods, the flexible inflatable dam body is deflated and folded up to reduce drainage resistance, replacing the traditional rigid gate, greatly reducing construction and maintenance costs, and is suitable for large rainwater culverts with small terrain slopes. It breaks through the limitation of traditional technology relying on terrain drop, and the foldable dam body reduces water head loss, making it suitable for extremely flat areas.

[0009] Based on the above technical solution, the present invention can be further improved as follows:

[0010] Furthermore, the interior of the flexible inflatable dam is provided with multiple transverse reinforcing ribs, which divide the interior of the flexible inflatable dam into independent inflation and deflation chambers, and each inflation and deflation chamber is connected to the inflation component.

[0011] The beneficial effects of the above-mentioned further solution are: by setting multiple transverse reinforcing ribs inside the flexible inflatable dam body and dividing the interior of the flexible inflatable dam body into independent inflation and deflation chambers, sequential inflation and deflation can be performed on each independent inflation and deflation chamber to generate diverse pulse waveforms, improve the flushing effect, and the inflation and deflation chambers will not affect each other.

[0012] Furthermore, each of the inflation and deflation chambers on the flexible inflatable dam is provided with a sealing slider on both sides, and the inner walls of the opposite sides of the support frame are respectively provided with slide rails that match the sealing sliders, and all the sealing sliders are slidably connected to the slide rails.

[0013] The beneficial effects of the above-mentioned further solution are: by setting the sealing slider and sliding it with the slide rail, the height of the flexible inflatable dam can be adaptively adjusted during inflation and deflation, and the close cooperation between the two can ensure that no obvious horizontal displacement or deformation occurs in the inflation and deflation states of the flexible inflatable dam.

[0014] Furthermore, the sealing slider is made of aging-resistant rubber material, and the cross-section of the sealing slider is a T-shaped structure. The fitting gap between the sealing slider and the slide rail is no more than 0.5mm.

[0015] The beneficial effects of the above-mentioned further solutions are: using aging-resistant rubber material, which has a long service life and good flexibility, ensuring the fit clearance with the slide rail, and improving water-blocking and sealing performance.

[0016] Furthermore, the two sides of the flexible inflatable dam are movably connected to the inner wall of the support frame via ropes.

[0017] The beneficial effect of the above-mentioned further solution is that by connecting the two sides of the flexible inflatable dam to the inner wall of the support frame through ropes, the flexible inflatable dam can be auxiliaryly limited and fixed, ensuring the stability of the lifting and lowering movement of the flexible inflatable dam.

[0018] Furthermore, the inflation assembly includes an inflation pipe, an inflation solenoid valve, and an air compressor. Each inflation / deflation chamber is connected to the air compressor through the inflation pipe, and each inflation pipe is equipped with an inflation solenoid valve.

[0019] The advantages of the above-mentioned further solution are: by setting up an inflation pipeline, it is convenient for the air machine to inflate the inflation and deflation chamber, and the inflation solenoid valve can control the opening and closing of the pipeline, which is very convenient.

[0020] Furthermore, the venting assembly includes a venting pipe, a venting solenoid valve, and a vacuum pump. Each of the filling and venting chambers is connected to the vacuum pump through the venting pipe, and each venting pipe is equipped with a venting solenoid valve.

[0021] The beneficial effects of the above-mentioned further solution are: by setting up a venting pipe, the air pump can easily vent the filling and venting chamber, and the venting solenoid valve can control the opening and closing of the pipe, which is very convenient.

[0022] Furthermore, the bottom plate of the box culvert is provided with a groove along the cross section of the box culvert for accommodating the flexible inflatable dam, and the flexible inflatable dam can be automatically stored in the groove after it is completely deflated.

[0023] The beneficial effect of the above-mentioned further solution is that by setting the groove, the flexible inflatable dam can be automatically stored in the groove after it is completely deflated, which can reduce drainage resistance during rainstorms.

[0024] Furthermore, the support frame is made of lightweight aluminum alloy, and the surface of the support frame is treated with anti-corrosion measures, with a tensile strength of not less than 200 MPa.

[0025] The advantages of the above-mentioned further solutions are: the use of lightweight aluminum alloy material facilitates installation, has high tensile strength, and the surface anti-corrosion treatment can improve corrosion resistance.

[0026] This utility model also provides a foldable inflatable pulse flushing system suitable for large rainwater culverts, including a sensor acquisition component for real-time monitoring of the water level difference between upstream and downstream and the flow rate of the culvert, a controller, and the foldable inflatable pulse flushing device suitable for large rainwater culverts. The sensor acquisition component, the inflation component, and the deflation component are electrically connected to the controller.

[0027] This utility model discloses a foldable inflatable pulse flushing system suitable for large rainwater culverts. It collects the water level difference between upstream and downstream and the flow rate of the culvert in real time through a sensor acquisition component, and remotely controls the inflation and deflation components to inflate and deflate the flexible inflatable dam body through a controller. This enables intelligent switching between dredging and flood discharge modes, meets the timeliness requirements of pulse flushing, and ensures the safety of flood discharge during rainstorms. Attached Figure Description

[0028] Figure 1This is a side view of the flexible inflatable dam body when a foldable inflatable pulse flushing device for large rainwater culverts is erected, according to an embodiment of the present invention.

[0029] Figure 2 This is a side view of the foldable inflatable pulse flushing device for large rainwater culverts according to an embodiment of the present invention, when the flexible inflatable dam collapses.

[0030] Figure 3 This is a front view of the foldable inflatable pulse flushing device for large rainwater culverts according to an embodiment of the present invention, when the flexible inflatable dam body is erected.

[0031] Figure 4 This is a top view of the foldable inflatable pulse flushing device for large rainwater culverts according to an embodiment of the present invention, when the flexible inflatable dam collapses.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Support frame; 2. Flexible inflatable dam body; 3. Inflatable component; 4. Deflatable component; 5. Box culvert bottom plate; 6. Sealing slider; 7. Slide rail; 8. Inflatable pipe; 9. Inflatable solenoid valve; 10. Deflatable pipe; 11. Deflatable solenoid valve; 12. Groove; 13. Reinforcing rib. Detailed Implementation

[0034] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0035] like Figures 1 to 4 As shown, a foldable inflatable pulse flushing device suitable for large rainwater culverts includes a support frame 1, a flexible inflatable dam 2, an inflation component 3, and a deflation component 4. The support frame 1 is mounted on the bottom plate 5 of the culvert. The flexible inflatable dam 2 is mounted inside the support frame 1, and its bottom is fixedly connected to the bottom plate 5. The two sides of the flexible inflatable dam 2 are slidably connected to the side walls of the support frame 1. The flexible inflatable dam 2 is connected to the inflation component 3 and the deflation component 4, respectively. The two sides of the flexible inflatable dam 2 can slide up and down along the side walls of the support frame 1 during inflation and deflation.

[0036] This utility model discloses a sediment pulse flushing device for large rainwater culverts. During non-rainstorm periods, it inflates the flexible inflatable dam 2 to form a water-blocking structure to accumulate water head, and then quickly deflates it to generate pulse water flow for sludge removal. During rainstorm periods, it deflates the flexible inflatable dam 2 and folds it up to reduce drainage resistance. It replaces the traditional rigid gate, greatly reducing construction and maintenance costs. It is suitable for large rainwater culverts with gentle slopes, breaking through the limitations of traditional technologies that rely on terrain elevation differences. The foldable dam body reduces water head loss and is suitable for extremely flat areas.

[0037] In the embodiments of this utility model, the bottom of the flexible inflatable dam 2 is connected to the box culvert bottom plate 5 through a hinge structure, and is fixed by bolts and nuts pre-embedded on the box culvert bottom plate 5. The support frame 1 is located on the outer periphery of the flexible inflatable dam 2, and each end of the support frame 1 is composed of two I-beams on both sides.

[0038] In one or more embodiments of this utility model, the flexible inflatable dam 2 is provided with multiple transverse reinforcing ribs 13, dividing the interior of the flexible inflatable dam 2 into independent inflation and deflation chambers, and each inflation and deflation chamber is connected to the inflation component 3. By providing multiple transverse reinforcing ribs 13 inside the flexible inflatable dam 2 and dividing the interior of the flexible inflatable dam 2 into independent inflation and deflation chambers, sequential inflation and deflation can be performed on each independent inflation and deflation chamber, generating diverse pulse waveforms, improving the flushing effect, and the inflation and deflation chambers do not interfere with each other.

[0039] In one or more embodiments of this utility model, sealing sliders 6 are respectively provided on both sides of each inflation / deflation chamber on the flexible inflatable dam 2, and slide rails 7 matching the sealing sliders 6 are respectively provided on the inner sidewalls of opposite sides of the support frame 1. All the sealing sliders 6 are slidably connected to the slide rails 7. By setting the sealing sliders 6 and slidably connecting them to the slide rails 7, the flexible inflatable dam 2 can easily adjust its height adaptively during inflation and deflation (standing upright during inflation and collapsing during deflation), and the close cooperation between the two can ensure that the flexible inflatable dam 2 does not experience significant horizontal displacement and deformation due to lateral water pressure during inflation and deflation.

[0040] Optionally, in one or more embodiments of this utility model, the sealing slider 6 is made of aging-resistant rubber material, and the cross-section of the sealing slider 6 is a T-shaped structure. The fitting gap between the sealing slider 6 and the slide rail 7 is no greater than 0.5mm. The use of aging-resistant rubber material ensures a long service life, adaptability to complex water qualities, and good flexibility, guaranteeing the fitting gap with the slide rail 7 and improving water-blocking sealing performance.

[0041] In one or more embodiments of this utility model, the two sides of the flexible inflatable dam 2 are movably connected to the inner wall of the support frame 1 via pull ropes. By movably connecting the two sides of the flexible inflatable dam 2 to the inner wall of the support frame 1 via pull ropes, the flexible inflatable dam 2 can be auxiliaryly limited and fixed, ensuring the stability of the lifting and lowering movement of the flexible inflatable dam 2.

[0042] In one or more embodiments of this utility model, the inflation assembly 3 includes an inflation pipe 8, an inflation solenoid valve 9, and an air compressor. Each inflation / deflation chamber is connected to the air compressor via the inflation pipe 8, and each inflation pipe 8 is equipped with an inflation solenoid valve 9. The inflation pipe 8 facilitates the air compressor's inflation of the inflation / deflation chambers, and the inflation solenoid valve 9 allows for control of the pipe's on / off state and opening degree, which is very convenient.

[0043] In one or more embodiments of this utility model, the venting assembly 4 includes a venting pipe 10, a venting solenoid valve 11, and a vacuum pump. Each of the inflation / deflation chambers is connected to the vacuum pump via the venting pipe 10, and each venting pipe 10 is equipped with a venting solenoid valve 11. The venting pipe 10 facilitates the vacuum pump's venting of the inflation / deflation chambers, and the venting solenoid valve 11 controls the flow and opening of the pipes, which is very convenient. When the venting solenoid valve 11 is controlled to vent rapidly, the flexible inflatable dam 2 collapses rapidly, generating a pulsed water flow for initial flushing. Each inflation / deflation chamber can be independently controlled via its corresponding inflation solenoid valve 9 and venting solenoid valve 11, which is very convenient and prevents them from interfering with each other.

[0044] In one or more embodiments of this utility model, a groove 12 for accommodating the flexible inflatable dam 2 is provided on the bottom plate 5 of the box culvert along the cross-sectional direction of the box culvert, and the flexible inflatable dam 2 can be automatically stored in the groove 12 after being completely deflated. By providing the groove 12, the flexible inflatable dam 2 can be easily stored in the groove 12 after being completely deflated, thus reducing drainage resistance during heavy rain.

[0045] Here, the depth of the groove is determined based on the thickness of the flexible inflatable dam 2 when it collapses, ensuring that the flexible inflatable dam 2 in its relaxed state can fall into the groove without affecting the drainage resistance. Both the inflation pipe 8 and the deflation pipe 10 need to use flexible hoses.

[0046] In one or more embodiments of this utility model, the support frame 1 is made of lightweight aluminum alloy, and the surface of the support frame 1 is treated with anti-corrosion coating, with a tensile strength of not less than 200 MPa. The use of lightweight aluminum alloy facilitates installation, provides high tensile strength, and the surface anti-corrosion treatment improves corrosion resistance. This utility model also provides a foldable inflatable pulse flushing system suitable for large rainwater culverts, including a sensor acquisition component for real-time monitoring of upstream and downstream water level differences and culvert flow, a controller, and the aforementioned foldable inflatable pulse flushing device suitable for large rainwater culverts. The sensor acquisition component, inflation component 3, and deflation component 4 are electrically connected to the controller.

[0047] This utility model discloses a foldable inflatable pulse flushing system suitable for large rainwater culverts. It collects the water level difference between upstream and downstream and the flow rate of the culvert in real time through the sensing and acquisition components, and remotely controls the inflation and deflation components 3 and 4 of the flexible inflatable dam body 2 through the controller. It realizes intelligent switching between dredging and flood discharge modes, meets the timeliness requirements of pulse flushing, and ensures the safety of flood discharge during rainstorms.

[0048] In this embodiment of the invention, the sensing and acquisition components include a liquid level sensor and a flow sensor, which monitor the upstream and downstream water level difference and the culvert flow rate in real time, respectively. For example, when the flow rate or water level is detected to be lower than the corresponding set threshold, a flushing mode is triggered; when the flow rate exceeds the set threshold, the venting component 4 is controlled to forcibly vent, causing the flexible inflatable dam to collapse rapidly and the water to drain quickly. The controller can use an existing 51 series microcontroller or an ARM series microcontroller; the specific control process is all prior art, and this is not within the scope of protection claimed by this invention.

[0049] The installation process of this utility model for a foldable inflatable pulse flushing device suitable for large rainwater culverts is as follows:

[0050] 1. Bolts are pre-embedded on the bottom plate 5 of the box culvert for fixing the flexible inflatable dam body 2;

[0051] 2. Install guide rails 7 on the side wall of the box culvert to cooperate with the sealing sliders 6 on both sides of the flexible inflatable dam body 2;

[0052] 3. Lay the inflation pipe 8 and connect the air compressor, inflation solenoid valve 9 and the inflation port of the flexible inflatable dam 2;

[0053] 4. Lay out the venting pipe 10 and connect the air pump, the venting solenoid valve 11 and the venting port of the flexible inflatable dam 2;

[0054] 5. Install the sensor acquisition component, and electrically connect the sensor acquisition component, the air compressor and air inflation solenoid valve 9 in the inflation component 3, and the air extraction machine and air deflation solenoid valve 11 in the deflation component 4 to the controller respectively.

[0055] This utility model discloses a foldable inflatable pulse flushing device and system suitable for large rainwater culverts. During non-rainstorm periods, when the culvert flow rate is lower than a set threshold, the controller controls the solenoid valve to open, and the inflation component 3 inflates the flexible inflatable dam 2. The flexible inflatable dam 3 is erected to a set height. When the upstream water level rises to the set water level, a rapid deflation mode is triggered, forming a pulse water flow to flush away sediment. After flushing, the dam collapses without affecting normal drainage. During rainstorm periods, when the upstream flow rate exceeds the set threshold, regardless of whether the flexible inflatable dam 2 is inflated, the controller forcibly opens the deflation solenoid valve 11 to deflate, which can control the rapid collapse of the flexible inflatable dam 2 within 20 seconds, ensuring smooth flood discharge.

[0056] This invention relates to a foldable inflatable pulse flushing device and system suitable for large stormwater culverts. The segmented inflation and deflation chambers inside the flexible inflatable dam body 2 can be controlled by independent solenoid valves to achieve stepped inflation and deflation, simulating wave force and enhancing the flushing effect on viscous sediments. It improves the flushing targeting of different sediment types and is suitable for large stormwater culverts with gentle slopes, overcoming the limitations of traditional technologies that rely on terrain elevation differences. The impact on daily drainage is minimal after dam collapse. Multiple flexible inflatable dam bodies can be connected in series to adapt to culverts with varying degrees of siltation, enabling long-distance segmented dredging without disassembly or maintenance. The quick-release design of vulnerable parts shortens maintenance time and solves the problem of dredging gravity-flow channels in flat areas. It has advantages such as simple structure, fast response, and low maintenance costs, and is suitable for dredging and maintenance of municipal drainage systems.

[0057] This utility model discloses a foldable inflatable pulse flushing device and system suitable for large rainwater culverts. The foldable inflatable dam body replaces the traditional rigid gate, reducing construction and maintenance costs. It adopts segmented inflation and deflation chambers: the independent inflation and deflation chambers can be sequentially inflated and deflated to generate diverse pulse waveforms and improve flushing effect. The precision sealing slider 6 uses aging-resistant rubber in conjunction with the guide rail 7 to improve water-blocking sealing. The lightweight support frame 1 is made of lightweight and corrosion-resistant material, extending its service life.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A foldable inflatable pulse flushing device suitable for large rainwater culverts, characterized in that... The system includes a support frame (1), a flexible inflatable dam (2), an inflation component (3), and a deflation component (4). The support frame (1) is set on the bottom plate (5) of the box culvert. The flexible inflatable dam (2) is set inside the support frame (1), and the bottom of the flexible inflatable dam (2) is connected and fixed to the bottom plate (5) of the box culvert. The two sides of the flexible inflatable dam (2) are slidably connected to the side walls of the support frame (1), and the flexible inflatable dam (2) is connected to the inflation component (3) and the deflation component (4), respectively. The two sides of the flexible inflatable dam (2) can slide up and down along the side walls of the support frame (1) when inflating and deflation.

2. The foldable inflatable pulse flushing device for large rainwater culverts according to claim 1, characterized in that... The flexible inflatable dam (2) is provided with multiple transverse reinforcing ribs (13) inside, which divide the interior of the flexible inflatable dam (2) into independent inflation and deflation chambers, and each inflation and deflation chamber is connected to the inflation component (3).

3. The foldable inflatable pulse flushing device for large rainwater culverts according to claim 2, characterized in that... Each of the inflation and deflation chambers on the flexible inflatable dam body (2) is provided with a sealing slider (6) on both sides. The inner walls of the opposite sides of the support frame (1) are provided with slide rails (7) that match the sealing sliders (6). All the sealing sliders (6) are slidably connected to the slide rails (7).

4. The foldable inflatable pulse flushing device for large rainwater culverts according to claim 3, characterized in that... The sealing slider (6) is made of aging-resistant rubber material, and the cross section of the sealing slider (6) is a T-shaped structure. The fitting gap between the sealing slider (6) and the slide rail (7) is no more than 0.5mm.

5. The foldable inflatable pulse flushing device for large rainwater culverts according to claim 1, characterized in that... The two sides of the flexible inflatable dam (2) are movably connected to the inner wall of the support frame (1) by ropes.

6. The foldable inflatable pulse flushing device for large rainwater culverts according to claim 2, characterized in that... The inflation assembly (3) includes an inflation pipe (8), an inflation solenoid valve (9), and an air compressor. Each inflation and deflation chamber is connected to the air compressor through the inflation pipe (8), and each inflation pipe (8) is equipped with an inflation solenoid valve (9).

7. The foldable inflatable pulse flushing device for large rainwater culverts according to claim 2, characterized in that... The venting assembly (4) includes a venting pipe (10), a venting solenoid valve (11), and a vacuum pump. Each of the filling and venting chambers is connected to the vacuum pump through the venting pipe (10), and each of the venting pipes (10) is provided with a venting solenoid valve (11).

8. The foldable inflatable pulse flushing device for large rainwater culverts according to claim 1, characterized in that... The bottom plate (5) of the box culvert is provided with a groove (12) along the cross section of the box culvert for accommodating the flexible inflatable dam (2), and the flexible inflatable dam (2) can be automatically stored in the groove (12) after it is completely deflated.

9. The foldable inflatable pulse flushing device for large rainwater culverts according to any one of claims 1-8, characterized in that... The support frame (1) is made of lightweight aluminum alloy, and the surface of the support frame (1) is treated with anti-corrosion and has a tensile strength of not less than 200MPa.

10. A foldable inflatable pulse flushing system suitable for large rainwater culverts, characterized in that: It includes a sensor acquisition component for real-time monitoring of the water level difference between upstream and downstream and the flow rate of the box culvert, a controller, and a foldable inflatable pulse flushing device for large rainwater box culverts as described in any one of claims 1-9, wherein the sensor acquisition component, the inflation component (3), and the deflation component (4) are electrically connected to the controller.

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