Drainage device for bridge floor runoff hazardous chemicals in water source protection area

Abstract

The utility model provides a drainage device for bridge floor runoff hazardous chemicals in a water source protection area, and relates to the technical field of drainage of highway bridges crossing drinking water sources. The main drainage pipeline is installed on the bridge body through a hanging bracket, the multiple drainage branch pipelines are fixed to the side wall of the bridge body through a frame body, the multiple drainage holes are formed in the bridge floor and used for improving the drainage capacity of the structure, and the main drainage pipeline and the multiple drainage branch pipelines are all arranged on the outer side of the bridge body. The drainage pipeline is communicated with the drainage hole; the main drainage pipeline is provided with a communicating structure communicating with the drainage structure or the emergency water storage structure, after the dangerous chemicals leak, the communicating position of the main drainage pipeline and the drainage structure is intercepted through the communicating structure, at the moment, the main drainage pipeline communicates with the emergency water storage structure, and liquid carrying the dangerous chemicals enters the emergency water storage structure. And liquid with hazardous chemical substances is prevented from being directly guided into the water source from the drainage structure to pollute soil and water sources in the water source.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage of highway bridges across drinking water sources, and in particular to a drainage device for hazardous chemicals in bridge deck runoff in a water source protection area. Background Art

[0002] The traditional drainage system of highway bridges across drinking water sources collects rainwater on the bridge deck through bridge drainage pipes and puts it into a sewage treatment pool near the abutment. When it rains or a vehicle transporting hazardous chemicals leaks in a car accident, the rainwater will be discharged into the sewage treatment pool through the bridge drainage pipes. Although the bridge drainage system in the prior art has added various sensors to the system to determine whether the liquid flowing into the floor drain is ordinary rainwater, it does not promptly process rainwater carrying hazardous chemicals or rainwater not carrying hazardous chemicals, resulting in rainwater carrying hazardous chemicals or rainwater not carrying hazardous chemicals being mixed and directly introduced into the sewage treatment pool, making it difficult for the sewage treatment pool to store large amounts of sewage, making it difficult for pollutants to be effectively treated, thereby causing pollutants to leak to the vicinity of the drinking water protection area, resulting in frequent environmental pollution. Utility Model Content

[0003] The purpose of the utility model is to provide a bridge deck runoff hazardous chemicals drainage device in a water source protection area, which can solve the problems raised by the above-mentioned background technology in view of the shortcomings of the prior art.

[0004] The technical solution of the utility model is achieved in this way:

[0005] The utility model provides a drainage device for hazardous chemicals in bridge deck runoff in a water source protection area, comprising a drainage structure, an emergency water storage structure and a water guide structure arranged on both sides of a bridge body, the water guide structure comprising a main drainage pipe, a plurality of drainage branch pipes and a plurality of drainage holes arranged on the bridge deck, the main drainage pipe and the plurality of drainage branch pipes are all arranged on the outer side of the bridge body, the drainage pipe is connected with the drainage holes, and the drainage pipe is connected with the main drainage pipe; a connecting structure connected with the drainage structure or the emergency water storage structure is provided on the main drainage pipe.

[0006] In some technical solutions of the utility model, the connecting structure includes a control well arranged in the ground, the control well is provided with a detection component for detecting hazardous chemicals, and the control well is provided with two drainage valves respectively connected to the drainage structure or the emergency water storage structure.

[0007] In some technical solutions of the utility model, a buffer tank is provided between the main drainage pipe and the control well.

[0008] In some technical solutions of the utility model, the main drainage pipe includes a main pipe, a flange and a pipe compensator which are connected in sequence. The drainage pipe is arranged on the outside of the main pipe, and a fixed bracket for fixing the main pipe is provided on the bridge body.

[0009] In some technical solutions of the utility model, the emergency water storage structure includes an emergency pool arranged in the ground, a telescopic airbag is arranged in the emergency pool, and a drainage valve is connected to the telescopic airbag.

[0010] In some technical solutions of the utility model, a plurality of guide rods are arranged in the emergency pool along the extension direction of the emergency pool, a plurality of mounting rings are sleeved on the outer wall of the telescopic airbag, and guide holes matching the guide rods are opened on the mounting rings.

[0011] In some technical solutions of the present utility model, the detection component includes a PLC controller, a photoelectric water immersion sensor, a chemical detection sensor and an alarm device, and the photoelectric water immersion sensor, the chemical detection sensor and the alarm device are all electrically connected to the PLC controller.

[0012] In some technical solutions of the present utility model, there are two groups of water-conducting structures, and the two groups of water-conducting structures are respectively arranged on the outer side walls on both sides of the bridge body.

[0013] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0014] The water-guiding structure includes a main drainage pipe installed on the bridge body through a hanger, a plurality of drainage branch pipes fixed to the side wall of the bridge body through a frame, and a plurality of drainage holes arranged on the bridge deck. The plurality of drainage holes are used to increase the drainage capacity of the structure. The main drainage pipe and the plurality of drainage branch pipes are arranged on the outer side of the bridge body. The drainage pipe is connected with the drainage holes. The drainage pipe is connected with the main drainage pipe by being fixedly connected by welding or by means of a flange. A connecting structure connected with the drainage structure or the emergency water storage structure is provided on the main drainage pipe, which is used to intercept the connection between the main drainage pipe and the drainage structure through the connecting structure after a hazardous chemical leak occurs. At this time, the main drainage pipe is connected with the emergency water storage structure, and the liquid carrying hazardous chemicals will enter the emergency water storage structure for storage, so as to avoid the liquid carrying hazardous chemicals being directly introduced from the drainage structure into the water source and polluting the soil and water source in the water source. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall layout of the drainage device in the utility model;

[0017] Figure 2 It is a schematic diagram of the connection between the water guide structure, the emergency pool and the drainage structure in the utility model;

[0018] Figure 3 This is a schematic diagram of the installation combination of the main drainage pipe and the bridge body in the utility model;

[0019] Figure 4 This is a schematic diagram of the assembly structure of the main drainage pipe in the utility model;

[0020] Figure 5 It is a schematic diagram of the internal structure of the emergency pool in the utility model.

[0021] Icons: 1. Bridge body; 2. Drainage hole; 3. Main drainage pipe; 4. Buffer tank; 5. Control well; 6. Drainage structure; 7. Emergency tank; 8. Fixed bracket; 9. Drainage branch pipe; 10. Telescopic airbag; 11. Mounting ring; 12. Guide rod; 13. Main pipe; 14. Flange; 15. Pipeline compensator; 16. Drain valve. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] Please refer to Figure 1-Figure 5 shown.

[0026] The utility model provides a drainage device for hazardous chemicals in bridge runoff in a water source protection area, such as Figure 1 , Figure 2As shown, it mainly solves the problem in the prior art that the initial drainage of the bridge built in the water source and the direct infiltration of hazardous chemicals into the side ditch or the sump will cause pollution to the environment of the water source. In order to solve the above problems, the technical solution is provided with a drainage structure 6 on the roadbed on both sides of the bridge body 1 across the water source, which is used to guide the rainwater discharged from the bridge body 1 to the two sides of the roadbed to pass through the water source harmlessly, and avoid it being directly introduced into the water source to pollute the soil and water source in the water source; the emergency water storage structure and the water guide structure are used to collect the rainwater discharged initially from the bridge body 1 and the pollutants carried by the rainwater or the hazardous chemicals mixed with the water body, and avoid it being directly introduced into the water source to pollute the soil and water source in the water source or being introduced into other areas from the drainage structure 6; the water guide structure includes a main drainage pipe 3 installed on the bridge body 1 through a hanger, and multiple drainage branch pipes The channel 9 is fixed to the side wall of the bridge body 1 and a plurality of drainage holes 2 arranged on the bridge deck through a frame. The plurality of drainage holes 2 are used to increase the drainage capacity of the structure. The main drainage pipe 3 and a plurality of drainage branch pipes 9 are all arranged on the outer side of the bridge body 1. The drainage pipe is connected to the drainage hole 2. The drainage pipe is connected to the main drainage pipe 3 by welding or by a flange 14. The main drainage pipe 3 is provided with a connecting structure connected to the drainage structure 6 or the emergency water storage structure, which is used to intercept the connection between the main drainage pipe 3 and the drainage structure 6 through the connecting structure after a hazardous chemical leak occurs. At this time, the main drainage pipe 3 is connected to the emergency water storage structure, and the liquid carrying hazardous chemicals will enter the emergency water storage structure for storage, so as to avoid the liquid carrying hazardous chemicals being directly introduced from the drainage structure 6 into the water source to pollute the soil and water source in the water source.

[0027] Preferably, the drainage structure 6 adopts a drainage ditch made of existing precast concrete.

[0028] Preferably, diversion slopes are provided on both sides of the bridge body 1 to guide rainwater accumulated on the bridge body 1 to be quickly introduced into the drainage holes 2 .

[0029] In some technical schemes of the utility model, the connecting structure includes a control well 5 arranged on the ground, the control well 5 is used to store the initial liquid introduced into the interior from the main drainage pipe 3, and the liquid is detected by a detection component for detecting hazardous chemicals provided in the control well 5. When the detected liquid does not detect the hazardous chemical content by the detection component, the drainage valve 16 provided in the control well 5 and connected to the drainage structure 6 is closed, and the drainage valve 16 provided in the control well 5 and connected to the emergency water storage structure is opened. At this time, the water body is smoothly introduced into the emergency water storage structure and stored. The drainage valve 16 is an electromagnetic valve, which is convenient for users to remotely control and intelligently control the start-up drainage operation or interception operation of the drainage structure 6.

[0030] In some technical schemes of the utility model, the buffer tank 4 provided between the main drainage pipe 3 and the control well 5 can buffer the water entering the control well 5 from the main drainage pipe 3, thereby preventing the water with a faster flow rate from entering the control well 5 and causing damage to various detection instruments installed in the control well 5.

[0031] In some technical solutions of the utility model, the main drainage pipe 3 includes a main pipe 13, a flange 14 and a pipe compensator which are connected in sequence, the drainage pipe is arranged on the outer side of the main pipe 13, and a fixing bracket 8 for fixing the main pipe 13 is arranged on the bridge body 1. The flange 14 can be divided into a normal flange and a special-shaped flange; the main pipe 13 is formed by splicing a plurality of pipes, which have different models such as dn300, dn400 and dn500, and a plurality of main pipes 13 of different models are spliced ​​by special-shaped flanges, and the pipe compensator 15 arranged on the main pipe 13 and connected thereto is a main pipe telescopic compensator, which has the flexibility to move within a certain range to offset the relative displacement between the bridge joints, and avoid the damage of the multi-stage spliced ​​main pipes 13 in the relative displacement.

[0032] Preferably, the fixed bracket 8 can use a support frame or a hanger to fix the corresponding main pipeline 13 on the bridge body.

[0033] In some technical solutions of the utility model, the emergency water storage structure includes an emergency pool 7 arranged in the ground, and a telescopic airbag 10 is arranged in the emergency pool 7, wherein a drain valve 16 is connected to the telescopic airbag 10. The emergency pool 7 can provide an installation space for the telescopic airbag 10 and an expansion area for the rope airbag, so that the telescopic airbag 10 can store more liquid carrying hazardous chemicals per unit time. Thanks to its own elastic force, it can expand along its axial direction to increase the storage volume of the emergency pool 7, and avoid the liquid leaking in the later stage exceeding the volume of the emergency pool 7, resulting in the liquid carrying hazardous chemicals being directly introduced into the water source to pollute the soil and water source in the water source.

[0034] Preferably, the emergency pool 7 is provided with a sewage outlet connected to the telescopic airbag 10 for draining the sewage in the telescopic airbag 10 .

[0035] In some technical solutions of the utility model, a plurality of guide rods 12 are arranged in the emergency pool 7 along the extension direction of the emergency pool 7, and a plurality of mounting rings 11 are sleeved on the outer wall of the telescopic airbag 10, and the mounting rings 11 are provided with guide holes adapted to the guide rods 12. The guide rods 12 are set in the emergency pool 7 through the frame, and the mounting rings 11 sleeved on the telescopic airbag 10 can avoid the outer wall of the telescopic airbag 10 from rubbing against the inner wall of the emergency pool 7, thereby preventing the telescopic airbag 10 from being damaged and reducing its service life, and can also force the telescopic airbag 10 to telescope in a predetermined direction under the restriction of the guide rods 12 and the guide holes.

[0036] Preferably, the inner layer of the telescopic airbag 10 is provided with a corrosion-resistant coating to improve the corrosion resistance of the structure.

[0037] In some technical schemes of the utility model, the detection component includes a PLC controller, a photoelectric water immersion sensor, a chemical detection sensor and an alarm device, and the photoelectric water immersion sensor, the chemical detection sensor and the alarm device are all electrically connected to the PLC controller. When the detected liquid does not detect the hazardous chemical content by the detection component, the drainage valve 16 provided in the control well 5 and connected to the drainage structure 6 is closed, and the drainage valve 16 provided in the control well 5 and connected to the emergency water storage structure is opened. At this time, the water body is smoothly introduced into the emergency water storage structure for storage. The set drainage valve 16 is a solenoid valve, which is convenient for users to remotely control the drainage structure 6 and intelligently control the drainage operation or interception operation. The photoelectric water immersion sensor and the chemical detection sensor can detect multiple groups of leaks and improve the detection ability of the equipment for hazardous chemicals. The above-mentioned PLC controller, the photoelectric water immersion sensor is a GW-WDT photoelectric water immersion sensor, the chemical detection sensor is a sensor for detecting carbon monoxide CO, carbon dioxide CO2, nitric oxide HO, hydrocarbons HC, smoke, etc., and the alarm device are all existing technologies.

[0038] In some technical solutions of the utility model, the number of water-conducting structures is two groups, and the two groups of water-conducting structures are respectively arranged on the outer side walls on both sides of the bridge body 1. The drainage capacity of the structure can be increased to prevent rainwater from accumulating on the bridge deck of the bridge body 1, affecting driving safety or causing accumulated leaked materials to overflow the road edge of the bridge body 1 and be directly introduced into the water source, causing pollution to the soil and water source in the water source.

[0039] Normal rainfall:

[0040] During normal rainfall, the initial rainwater in the first 15 minutes is discharged to the treatment station outside the water source protection area and centrally treated by the supporting initial rainwater treatment facilities. After 15 minutes, the road and bridge deck runoff is discharged to the roadbed ditch through the pipe through the drainage valve in the opening and closing control well.

[0041] Dangerous chemical leaks during rainfall:

[0042] When the hazardous chemical detection sensor detects that the runoff contains hazardous chemicals or the video surveillance system finds that a hazardous chemical vehicle has an accident, the valve (drain valve) at one end of the inspection well leading to the emergency pool 7 corresponding to the control of the sensor group is opened, and the command center is alarmed, and the road and bridge runoff is discharged to the treatment station outside the water source protection area. The sewage collected in the emergency pool 7 is handed over to the professional department for disposal; the command center quickly assigns emergency disposal personnel and water tankers to rush to the scene. At the same time, the command center remotely controls the initial rainwater treatment facilities in the treatment station to stop operating, and the overflow pipe of the emergency pool 7 is prohibited from opening.

[0043] When hazardous chemicals leak on a sunny day:

[0044] When the video surveillance system or escort personnel discover a hazardous chemical vehicle leakage accident, emergency response personnel will arrive at the scene within 15 minutes to carry out emergency response.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drainage device for hazardous chemicals in bridge runoff in a water source protection area, comprising drainage structures arranged on both sides of a bridge body, characterized in that: It also includes an emergency water storage structure and a water guiding structure, the water guiding structure includes a main drainage pipe, a plurality of drainage branch pipes and a plurality of drainage holes arranged on the bridge deck, the main drainage pipe and the plurality of drainage branch pipes are all arranged on the outside of the bridge body, any one of the drainage pipes is connected to any one of the drainage holes, and the drainage pipe is connected to the main drainage pipe; the main drainage pipe is provided with a connecting structure connected to the drainage structure or the emergency water storage structure.

2. The device for draining hazardous chemicals from bridge runoff in a water source protection area according to claim 1, characterized in that: The connecting structure includes a control well arranged on the ground, wherein the control well is provided with a detection component for detecting hazardous chemicals, and wherein the control well is provided with two drain valves, which are respectively connected to the drainage structure or the emergency water storage structure.

3. The device for draining hazardous chemicals from bridge runoff in a water source protection area according to claim 2, characterized in that: A buffer tank is provided between the main drainage pipe and the control well.

4. The device for draining hazardous chemicals from bridge runoff in a water source protection area according to claim 1, characterized in that: The main drainage pipe includes a main pipe, a flange and a pipe compensator which are connected in sequence. The drainage pipe is arranged on the outside of the main pipe, and a fixing bracket for fixing the main pipe is provided on the bridge body.

5. The device for draining hazardous chemicals from bridge runoff in a water source protection area according to claim 2, characterized in that: The emergency water storage structure comprises an emergency pool arranged on the ground, a telescopic air bag is arranged in the emergency pool, and a drainage valve is communicated with the telescopic air bag.

6. The device for draining hazardous chemicals from bridge runoff in a water source protection area according to claim 5, characterized in that: A plurality of guide rods are arranged in the emergency pool along the extending direction of the emergency pool, a plurality of mounting rings are sleeved on the outer wall of the telescopic airbag, and the mounting rings are all provided with guide holes adapted to the guide rods.

7. The device for draining hazardous chemicals from bridge runoff in a water source protection area according to claim 2, characterized in that: The detection component comprises a PLC controller, a photoelectric water immersion sensor, a chemical detection sensor and an alarm device, and the photoelectric water immersion sensor, the chemical detection sensor and the alarm device are all electrically connected to the PLC controller.

8. The device for draining hazardous chemicals from bridge runoff in a water source protection area according to claim 1, characterized in that: There are two groups of water-conducting structures, which are respectively arranged on the outer side walls on both sides of the bridge body.

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