Tunnel drainage ditch waterlogging prevention device

Abstract

The utility model discloses a waterlogging prevention device for a tunnel drainage ditch, and belongs to the technical field of tunnel drainage. A waterlogging prevention device for a tunnel drainage ditch comprises a drainage well, the side wall of the drainage well is communicated with a water conveying pipeline, the outer side of the water conveying pipeline is communicated with a connecting pipe with one end communicated with the drainage ditch, the outer side of the drainage well is communicated with a drainage pump, and the drainage end of the drainage pump is communicated with a drainage pipe; the waterlogging prevention device is arranged, the drainage well is arranged in the tunnel, the drainage well is communicated with the drainage ditch, when the water level of the drainage ditch rises to a certain height, reclaimed water in the drainage ditch can enter the drainage well through the connecting pipe and the water conveying pipeline, and when the water storage amount in the drainage well exceeds a preset safety threshold value, water in the drainage ditch enters the drainage well through the water conveying pipeline. The water level sensor is triggered, and the controller starts the drainage pump to drain water, so that accumulated water in the tunnel can be timely and effectively collected and drained, and waterlogging in the tunnel is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel drainage, and in particular relates to a tunnel drainage ditch anti-waterlogging device. Background Art

[0002] Tunnels are an important part of urban transportation. They are low-lying and have complex drainage systems, which make them very prone to waterlogging under extreme weather conditions such as heavy rain. Waterlogging not only causes serious waterlogging in tunnels, affecting vehicle traffic and personnel safety, but may also damage the tunnel structure and increase maintenance costs. Therefore, the problem of tunnel waterlogging has become a major problem in urban traffic management.

[0003] Existing tunnels usually use tunnel drainage ditches for drainage. However, some tunnel drainage ditches may not fully consider the drainage needs under extreme weather conditions during design, resulting in low design standards and insufficient drainage capacity. This is particularly obvious under extreme weather conditions such as heavy rain, which can easily cause water accumulation in the tunnel. Summary of the invention

[0004] The utility model aims to provide a tunnel drainage ditch anti-waterlogging device in view of the problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tunnel drainage ditch anti-flooding device, including a drainage well, the side wall of the drainage well is connected to a water supply pipeline, the outside of the water supply pipeline is connected to a connecting pipe, one end of the connecting pipe is connected to the drainage ditch, the outside of the drainage well is connected to a drainage pump, and the drainage end of the drainage pump is connected to a drainage pipe; a manhole cover is installed at the upper end of the drainage well, and a water level sensor is provided on the manhole cover.

[0006] By adopting the above technical solution, a drainage well is set up in the tunnel and connected with the drainage ditch, thereby ensuring that the accumulated water in the tunnel can be collected and discharged in a timely and effective manner, preventing the occurrence of tunnel waterlogging.

[0007] Optionally, there are several connecting pipes, and the connection between the connecting pipes and the drainage ditch is inclined downward, and the inclination angle is an acute angle.

[0008] By adopting the above technical solution, the connecting pipe is designed to be tilted downward, which can reduce the backflow of water.

[0009] Optionally, the water level sensor is electrically connected to a controller, and the drainage pump is controlled by the controller.

[0010] By adopting the above technical solution, automatic monitoring and response to water level changes are achieved through the linkage between the water level sensor and the controller. This automated process reduces the need for manual intervention and improves the operating efficiency and management level of the drainage system.

[0011] Optionally, a collecting piece is provided on the manhole cover, and the collecting piece includes a pair of connecting rods fixedly mounted on the lower end of the manhole cover, and the other end of the connecting rods is fixedly connected to a collecting frame; a floating plate is movably connected to the outer side of the connecting rod, a contact seat is installed at the upper end of the floating plate, and a trigger sensor that docks with the contact seat is installed at the lower end of the manhole cover.

[0012] By adopting the above technical solution, the design of the collection piece on the manhole cover improves the impurity collection and filtering capabilities, provides blockage warnings, reduces manual intervention, improves system reliability, and facilitates maintenance.

[0013] Optionally, the collecting frame includes a collecting frame and a screen installed on the collecting frame, and the maximum diameter of the collecting frame is compatible with the inner ring diameter of the drainage well.

[0014] By adopting the above technical solution, the setting of the collection frame can effectively collect and block impurities that enter the drainage well with the water flow, which not only helps to protect the drainage pump and other drainage equipment from damage by impurities, but also improves the overall operating efficiency of the drainage system.

[0015] Optionally, the outer side of the connecting rod is fixedly connected to a limit seat located at the lower end of the floating plate.

[0016] By adopting the above technical solution, the limit seat provides a lower limit position for the floating plate, ensuring that the floating plate can stay stably at a certain height when not affected by external force. This helps prevent the floating plate from moving randomly due to water flow fluctuations or other factors when not blocked, thereby ensuring the stability and reliability of the system.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. By setting up an anti-waterlogging device and setting up a drainage well in the tunnel, the drainage well is connected with the drainage ditch. When the water level in the drainage ditch rises to a certain height, the water in the drainage ditch will enter the drainage well through the connecting pipe and the water pipe. When the water storage in the drainage well exceeds the preset safety threshold, the water level sensor is triggered, and the controller starts the drainage pump to drain the water, thereby ensuring that the accumulated water in the tunnel can be collected and discharged in a timely and effective manner to prevent the occurrence of tunnel waterlogging; 2. By setting a collecting piece at the lower end of the manhole cover, the collection frame is located at the lower end of the water pipe, so that the impurities can be blocked and collected, the equipment is protected from damage, the drainage efficiency can be improved and maintenance is facilitated; by setting a floating plate on the outside of the connecting rod, when the collection frame is blocked, the water level in the collection frame rises, and the floating plate is driven synchronously, so that the contact seat on the floating plate contacts the trigger sensor, and the trigger sensor transmits a signal, which helps the management personnel to quickly grasp the blockage of the collection frame and take corresponding treatment measures. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the cross-sectional structure of the tunnel of the utility model viewed from above;

[0020] Figure 2 This is a schematic diagram of the three-dimensional connection structure of the drainage ditch and the connecting pipe of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the drainage well of the utility model;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the collection frame of the utility model.

[0023] In the figure: 1. drainage well; 2. water supply pipeline; 3. connecting pipe; 4. drainage pump; 5. drainage pipe; 6. well cover; 7. water level sensor; 8. collecting piece; 81. connecting rod; 811. limit seat; 82. collecting frame; 83. floating plate; 84. contact seat; 85. trigger sensor; 9. maintenance room. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] like Figure 1 —4, the specific scheme of the embodiment is as follows: a tunnel drainage ditch anti-flooding device, including a drainage well 1, the number of drainage wells 1 is set according to the needs of the tunnel, the side wall of the drainage well 1 is connected with a water pipeline 2, the number of the water pipeline 2 is two, and the two water pipelines 2 have a height difference when installed, the outer side of the water pipeline 2 is connected with a connecting pipe 3, one end of the connecting pipe 3 is connected with the drainage ditch, the number of the connecting pipes 3 is several, the connection between the connecting pipe 3 and the drainage ditch is inclined downward, and the inclination angle is an acute angle, there is a certain height difference between the connecting pipe 3 and the bottom wall of the drainage ditch, the upper end of the drainage ditch is installed with a grille net, the grille net can isolate larger impurities, the outer side of the drainage well 1 is connected with a drainage pump 4, the drainage end of the drainage pump 4 is connected with a drainage pipe 5, and the other end of the drainage pipe 5 is located outside the tunnel or in a designated drainage facility;

[0026] A manhole cover 6 is installed at the upper end of the drainage well 1, and a water level sensor 7 is provided on the manhole cover 6. The water level sensor 7 is electrically connected to the controller. When the water level exceeds a preset safety threshold, the controller starts the drainage pump 4 to drain water; when the water level drops below a preset minimum threshold, the controller stops the drainage pump 4. The drainage well 1 and the drainage pump 4 are both located in the maintenance room 9.

[0027] The water level sensor 7 can generate a corresponding electrical signal by sensing the height of the water level. When the water level changes, the water level sensor 7 transmits the generated electrical signal to the controller. This process can be performed in a wired or wireless manner. In the controller, two water level thresholds are preset: a safety threshold and a minimum threshold. These two thresholds are set according to the actual situation of the tunnel drainage system and the drainage requirements. After receiving the signal transmitted by the water level sensor 7, the controller will compare it with the preset threshold. When the water level exceeds the safety threshold, the controller determines that there is too much water in the drainage well 1 and it is necessary to start the drainage pump 4 for drainage. At this time, the controller will send a start instruction to the drainage pump 4; when the water level drops below the minimum threshold, the controller determines that the water in the drainage well 1 has been effectively removed and the drainage pump 4 does not need to continue to run. At this time, the controller will send a stop instruction to the drainage pump. The drainage pump 4 discharges the accumulated water to the outside of the tunnel through the drainage pipe 5, usually into a nearby drainage system or water body. During the drainage process, the controller will continuously monitor the water level changes and adjust the operating status of the drainage pump 4 as needed.

[0028] The manhole cover 6 is provided with a collecting member 8, and the collecting member 8 includes a pair of connecting rods 81 fixedly installed at the lower end of the manhole cover 6, and the other end of the connecting rod 81 is fixedly connected to a collecting frame 82, and the collecting frame 82 is located at the lower end of the connecting pipe 3. The collecting frame 82 includes a collecting frame 82 frame and a screen installed on the collecting frame 82 frame. The setting of the collecting frame 82 can perform secondary blocking and collection of impurities in the water, and the maximum diameter of the collecting frame 82 is adapted to the inner ring diameter of the drainage well 1;

[0029] The outer side of the connecting rod 81 is movably connected with a floating plate 83, and the outer side of the connecting rod 81 is fixedly connected with a limit seat 811 located at the lower end of the floating plate 83. The limit seat 811 is located at the upper end of the connecting pipe 3. The setting of the limit seat 811 can limit the position of the floating plate 83. The upper end of the floating plate 83 is installed with a contact seat 84, and the lower end of the manhole cover 6 is installed with a trigger sensor 85 that docks with the contact seat 84.

[0030] When the collecting frame 82 is not blocked, the water discharged from the connecting pipe 3 can flow smoothly and will not cause the water level to rise abnormally. At this time, the floating plate 83 is placed above the limit seat 811, and the contact seat 84 is not in contact with the trigger sensor 85; when the collecting frame 82 is blocked, the water flow discharged from the connecting pipe 3 is blocked, causing the water level in the collecting frame 82 to gradually rise. As the water level rises, the floating plate 83 moves upward due to the buoyancy. When the floating plate 83 rises to a certain height, the contact seat 84 at its upper end contacts the trigger sensor 85 at the lower end of the manhole cover 6. After contacting the contact seat 84, the trigger sensor 85 immediately generates an electrical signal or triggers a corresponding action. This signal is usually transmitted to the control system or monitoring equipment. After receiving the signal, the controller or monitoring system will process it and make a corresponding response. For example, the alarm device can be activated to remind the staff to pay attention, or the backup drainage system can be automatically started to alleviate the blockage.

[0031] The working principle of the above embodiment is:

[0032] The water in the tunnel enters the drainage ditch through the grille net, which initially blocks larger impurities. When the water level in the drainage ditch rises to a certain height, the water enters the water pipe 2 through the connecting pipe 3, and then flows into the drainage well 1. The water flowing into the drainage well 1 passes through the collection frame 82 for secondary filtration; the water level sensor 7 continuously monitors the water level in the drainage well 1 and transmits the water level information to the controller. When the water level exceeds the preset safety threshold, the controller starts the drainage pump 4 and discharges the accumulated water to the outside of the tunnel or to the designated drainage facilities through the drainage pipe 5. When the water level drops below the preset minimum threshold, the controller stops the operation of the drainage pump 4 and waits for the next drainage demand.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel drainage ditch anti-waterlogging device, characterized in that: The invention comprises a drainage well (1), wherein the side wall of the drainage well (1) is connected to a water delivery pipe (2), the outer side of the water delivery pipe (2) is connected to a connecting pipe (3), one end of the connecting pipe (3) is connected to a drainage ditch, the outer side of the drainage well (1) is connected to a drainage pump (4), and the drainage end of the drainage pump (4) is connected to a drainage pipe (5); a well cover (6) is installed at the upper end of the drainage well (1), and a water level sensor (7) is provided on the well cover (6).

2. The tunnel drainage ditch anti-flooding device according to claim 1 is characterized by: The number of the connecting pipes (3) is several, and the connection between the connecting pipes (3) and the drainage ditch is inclined downward, and the inclination angle is an acute angle.

3. The tunnel drainage ditch anti-waterlogging device according to claim 1 is characterized by: The water level sensor (7) is electrically connected to a controller, and the drainage pump (4) is controlled by the controller.

4. The tunnel drainage ditch anti-flooding device according to claim 1 is characterized by: The manhole cover (6) is provided with a collecting member (8), the collecting member (8) comprising a pair of connecting rods (81) fixedly mounted on the lower end of the manhole cover (6), the other end of the connecting rods (81) being fixedly connected to a collecting frame (82); a floating plate (83) is movably connected to the outer side of the connecting rods (81), a contact seat (84) is mounted on the upper end of the floating plate (83), and a trigger sensor (85) docking with the contact seat (84) is mounted on the lower end of the manhole cover (6).

5. The tunnel drainage ditch anti-flooding device according to claim 4 is characterized by: The collecting frame (82) comprises a collecting frame (82) frame and a screen mounted on the collecting frame (82) frame, and the maximum diameter of the collecting frame (82) is compatible with the inner ring diameter of the drainage well (1).

6. The tunnel drainage ditch anti-waterlogging device according to claim 4 is characterized by: The outer side of the connecting rod (81) is fixedly connected to a limiting seat (811) located at the lower end of the floating plate (83).

Images