CN111005429A - Drainage system and method of double-layer coupling structure - Google Patents
Drainage system and method of double-layer coupling structure Download PDFInfo
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- CN111005429A CN111005429A CN201911373089.5A CN201911373089A CN111005429A CN 111005429 A CN111005429 A CN 111005429A CN 201911373089 A CN201911373089 A CN 201911373089A CN 111005429 A CN111005429 A CN 111005429A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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Abstract
The invention discloses a drainage system and a drainage method of a double-layer coupling structure. The system comprises a plurality of rainwater inspection wells, wherein the rainwater inspection wells are communicated through rainwater drainage pipelines, a submersible pump is arranged in each rainwater inspection well, rainwater pressure pipelines are arranged on the shallow layer of the surface of the road above the outside of each rainwater inspection well, and the water outlet pipelines of the submersible pumps are connected into the rainwater pressure pipelines through check valves, so that a double-layer drainage system coupled with the existing municipal rainwater drainage pipelines is formed. The invention can avoid the structural damage to the existing rainwater (drainage) pipe network; the capacity of coping with short-term strong rainfall can be effectively improved, and the social and economic life loss caused by accumulated water waterlogging is reduced; the operation parameters are monitored in the whole process, a seamless access interface is provided for realizing digital management of a drainage pipe network, the operation performance of the system is automatically improved, and rainwater in the existing rainwater pipe network can be subjected to diversion treatment according to the water quality pollution degree; effectively improve the discharge capacity of the existing urban rainwater (drainage) pipe network.
Description
Technical Field
The invention relates to a drainage system and a drainage method, in particular to a drainage system and a drainage method for efficiently dealing with urban waterlogging caused by short-time heavy rainfall, and belongs to the field of municipal water supply and drainage.
Background
In recent years, extreme weather events of short-term heavy rainfall frequently occur, and the short-term heavy rainfall often exceeds the drainage capacity of an urban rainwater drainage pipe network to cause urban waterlogging and water accumulation, so that inconvenience is brought to normal production and life of cities, and even life and property loss is caused. The upgrading and transformation of the rainwater drainage pipe network become important problems in the design, operation and maintenance of the municipal drainage field. Because urban rainwater (drainage) pipe network pipeline buries deeply underground, the vernier height links up closely from top to bottom, and underground piping kind is many the spaces little, reforms transform and has present rainwater (drainage) pipe network to have great technical difficulty, and current technical scheme mainly changes the pipeline of bigger bore through the road surface excavation, adds the regulation pond, perhaps obtains bigger discharge capacity in urban underground deep excavation heavy-calibre tunnel, and these technical scheme main defects lie in: (1) the cost is high; (2) the construction period is long; (3) the influence on ground traffic is large; (4) in the construction process, normal production and life of residents are easily influenced, even accidents such as the residents fall into a sewer due to poor management of a construction site, or the human body casualties are caused by road surface collapse due to underground construction, and the like occur; (5) due to the fact that underground pipelines are dense, other pipelines in the existing urban underground space are easily damaged; (6) the utilization efficiency of investment funds is low, the probability of occurrence of heavy rainfall events is small, the harm is large, the utilization efficiency of large-caliber pipelines is very low, and the overcurrent flow in the large-caliber pipelines in most rainfall processes is lower than the design standard, so that the performance of the large-caliber pipelines cannot be fully exerted; (7) according to prior patent technical scheme, the way drawback that the initial stage rainfall was adjusted and is held by the regulation pond is obvious, because quality of water is relatively poor, silt deposits the evacuation pipe jam that leads to the bottom easily, pollutes the rainwater quality in later stage moreover easily, considers initial stage rainfall quality of water relatively poor in this patent application, leads to the end to receive the black smelly problem of water easily.
Disclosure of Invention
The invention discloses a drainage system and a drainage method with a double-layer coupling structure, which solve the technical problems as follows: (1) the damage to other underground pipelines of the existing city is avoided; (2) the use efficiency of the pipeline reconstruction fund is fully and effectively utilized; (3) the influence on normal production and life of society and ground traffic brought in the construction process and secondary damage caused by poor management of a construction site are avoided; (4) the manufacturing cost is low, and the construction period is short; (5) effectively improve the drainage ability of current urban rainwater (drainage) pipe network, the urban waterlogging incident that the short-time heavy rainfall incident brought is dealt with to the high efficiency.
The technical scheme of the invention is as follows:
the invention provides a drainage system with a double-layer coupling structure, which comprises a plurality of rainwater inspection wells, wherein the plurality of rainwater inspection wells are communicated through rainwater drainage pipelines, a submersible pump is arranged in each rainwater inspection well, a rainwater pressure pipeline is arranged on a shallow layer of the surface of a road above the outer part of each rainwater inspection well, and a water outlet pipeline of the submersible pump is connected into the rainwater pressure pipelines through a check valve, so that the double-layer drainage system coupled with the existing municipal rainwater drainage pipelines is formed.
Furthermore, the outlet of the rainwater pressure pipeline is connected to a river channel according to actual needs for direct discharge, or connected to a rainwater pollution rapid treatment and recycling facility for treatment and recycling, or connected to a sewage pipeline and sent to a sewage treatment plant for unified treatment and discharge.
Still further, still be provided with sensor, controller in the rainwater inspection shaft, the sensor includes level sensor, water quality sensor, well lid state monitoring sensor, inside air quality detection sensor that opens and shuts, will the sensor with the state monitoring input of controller links to each other, the power input control end of immersible pump links to each other with the switching value output of controller, install wireless data transmission RTU outside the inspection shaft, the signal output part of wireless data transmission RTU and controller links to each other.
Furthermore, the controller adopts an embedded microprocessor ARM as a central processing unit, the controller is provided with a sensor signal acquisition input end, a switching value output end, a data wireless transmission output end and an internal data state storage module, an input signal of the sensor signal acquisition input end comprises an analog value and a switching value, and the switching value output end is connected with a power control end of the submersible pump.
The invention also provides a drainage method of the double-layer coupling structure, wherein the double-layer drainage systems are switched by the intelligent rainwater node controller, and the two working modes comprise an in-situ autonomous intelligent judgment mode and a remote manual intervention mode; the intelligent in-situ automatic judgment is set according to operation needs, the adopted parameters comprise water level, water level change rate and water quality in the rainwater drainage inspection well, and the remote manual intervention mode is used for meeting the daily pipeline maintenance needs and the forced operation needs in an emergency state.
Furthermore, the pressure pipeline is backwashed by rainwater, and the backwashing mode comprises two backwashing modes: (a) starting a water pump in the diving well for backwashing in a remote manual intervention mode; (b) and in an automatic backwashing mode, after the controller sets a preset time interval for continuous work, the pump closing time is delayed for backwashing.
Furthermore, the equipment model selection parameters of the submersible pump comprise a lift and a flow; the flow parameter is selected based on the maximum flow capacity of an upstream rainwater inflow pipeline in the inspection well and a waterlogging prevention design flow difference value specified in 'urban waterlogging prevention and control technical specification', and meanwhile, the operation load is equally divided; and selecting local design rainfall type based on urban waterlogging prevention and control standards according to the lift parameters, and establishing a state model of constant flow and non-constant flow of the hydraulic power of the pipe network.
The invention has the following beneficial effects:
(1) the damage to other existing underground pipelines and the structural damage to the existing rainwater (drainage) pipe network are avoided;
(2) the early investment and later operation and maintenance cost is low, the capital use efficiency is higher than that of the similar transformation scheme, and the maintenance workload is small;
(3) the capacity of coping with short-term strong rainfall is effectively improved, and the social and economic life loss caused by accumulated water waterlogging is reduced;
(4) manual intervention is not needed in the operation process, the intelligent degree is high, the operation parameters are monitored in the whole process, and a seamless access interface is provided for realizing the digital management of the drainage pipe network;
(5) not only can detect the running state (water level, quality of water, inside air circumstance) of current rainwater (drainage) pipe network, avoid inside toxic gas gathering, can also improve rainwater (drainage) pipe network internal state as required, automatic promotion system operating performance.
(6) The rainwater pipe network can be shunted according to the water level, and can be shunted according to the water quality pollution degree, particularly, the pollution degree in the early stage of rainfall is heavier, and rainwater in the existing rainwater pipe network can be shunted according to the water quality pollution degree.
Drawings
FIG. 1 is a system configuration view of a drainage system of a double-layer coupling structure of the present invention;
FIG. 2 is a schematic diagram of a rainwater manhole structure;
fig. 3 is a control schematic of the controller.
The labels in the figure are: 1. a rainwater pressure line; 2. a rainwater inspection well; 3. a rainwater drainage line; 3-1, an upstream rainwater drainage pipeline; 3-2, a downstream rainwater drainage pipeline; 4. a river channel; 5. a facility for rapidly treating and recycling rainwater pollution; 6. a sewage conduit; 7. a submersible pump; 8. a rainwater inspection well cover; 9. an internal air quality detection sensor; 10. an exhaust fan; 11. a controller; 12. a wireless RTU transmission module; 13. a pressure pipeline end is accessed; 14. a manhole cover opening and closing state monitoring sensor; 15. a water level sensor; 16. a water quality sensor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The drainage system with a double-layer coupling structure is shown in figure 1 and comprises a plurality of rainwater inspection wells 2, wherein the rainwater inspection wells are communicated through rainwater drainage pipelines 3, a submersible pump 7 is arranged in each rainwater inspection well, a rainwater pressure pipeline 1 is arranged on a shallow layer of the surface of a road above the exterior of each rainwater inspection well, a water outlet pipeline of the submersible pump is connected into the rainwater pressure pipeline through a connection pressure pipeline end 13 by adopting a check valve, and the double-layer drainage system coupled with the existing municipal rainwater drainage pipelines is formed.
As shown in fig. 1, the outlet of the rainwater pressure pipeline is connected to a river 4 for direct discharge according to actual needs, or connected to a rainwater pollution rapid treatment and recycling facility 5 for treatment and recycling, or connected to a sewage pipeline 6 for delivering to a sewage treatment plant for unified treatment and discharge.
As shown in fig. 2, one side of the rainwater inspection well is connected with an upstream rainwater drainage pipeline 3-1, the other side is connected with a downstream rainwater drainage pipeline 3-2, a rainwater inspection well cover 8 is arranged at the upper part of the rainwater inspection well, an exhaust fan 10, a sensor and a controller 11 are further arranged in the rainwater inspection well, the sensor comprises a water level sensor 15, a water quality sensor 16, a well cover opening and closing state monitoring sensor 14 and an internal air quality detection sensor 9, the sensor is connected with a state monitoring input end of the controller, a power input control end of the submersible pump is connected with a switching value output end of the controller, a wireless RTU transmission module 12 is installed outside the inspection well, and a signal output end of the wireless data transmission RTU is connected with a signal output end of the controller.
As shown in fig. 3, the controller adopts an embedded microprocessor ARM as a central processing unit, the controller is provided with a sensor signal acquisition input end, a switching value output end, a data wireless transmission output end and an internal data state storage module, an input signal of the sensor signal acquisition input end comprises an analog value and a switching value, and the switching value output end is connected with a power control end of the submersible pump.
The intelligent rainwater node controller is finally combined with the original municipal rainwater drainage system to form a drainage system with a double-layer coupling structure, and switching is formed between the double-layer drainage systems through the intelligent rainwater node controller. The system scheme is shown in figure 3. There are two methods for handover: the intelligent monitoring system comprises two working modes of in-situ autonomous intelligent judgment and remote manual intervention, wherein the in-situ autonomous intelligent judgment is set according to operation requirements, the adopted parameters comprise three types, namely a rainwater drainage inspection well water level, a water level change rate and water quality, and the remote manual intervention mode mainly meets the requirements of daily pipeline maintenance and forced operation in an emergency state.
The invention can adopt rainwater to carry out back flush on the pressure pipeline to prevent the pipeline from being blocked, and enters a back flush mode through two modes: (a) starting a water pump in the diving well for backwashing in a remote manual intervention mode; (b) and in an automatic backwashing mode, after the controller sets a certain time interval for continuous work, the pump closing time is delayed for backwashing.
The method for selecting the key parameters of the lift and the flow of the submersible pump is different from the conventional design, the flow considers the maximum flow capacity of an upstream rainwater inflow pipeline in an inspection well and a flood prevention design flow difference value specified in urban waterlogging prevention and control technical specifications, meanwhile, the requirement for operation load sharing is considered, the lift selects a local design rainfall model specified according to the urban waterlogging prevention and control standards, a pipeline network hydraulic constant flow and non-constant flow state model is established, and the operation requirements under different pump-on water level working conditions are met.
Placing a controller in a selected inspection well of the rainwater pipe network, arranging a water level sensor, a well cover opening and closing state monitoring sensor, a water quality sensor and an internal air environment quality detection sensor (such as internal methane gas concentration detection) according to actual requirements, and connecting the sensors to a state quantity detection input end of the controller; installing and fixing an exhaust fan and a submersible pump in the inspection well, and connecting power supply control ends of the exhaust fan and the submersible pump to a switching value output end of a controller; installing and fixing a wireless data transmission RTU outside the inspection well, and connecting a signal input end of the RTU with a signal output end of a controller; the outlet pipe of immersible pump is worn out to be connected to the special pressure pipeline in the shallow layer earth's surface of rainwater from the inspection shaft lateral wall in, sets up the check valve on the outlet pipe and prevents the refluence.
Once the water level in the rainwater inspection well exceeds the set limit water level or the change rate of the water level in the rainwater inspection well in unit time exceeds the set limit, the controller starts the submersible pump to perform forced drainage; once the water quality in the rainwater inspection well exceeds the rainwater direct drainage standard, the controller starts the submersible pump to forcibly drain the water into a sewage pipeline; once the concentration of harmful gas in the inspection well exceeds the standard, the controller starts the exhaust fan to perform air exhaust and ventilation; once the controller detects that the well lid is opened through the well lid opening and closing state monitoring sensor, an alarm signal is started and sent to the remote transmission monitoring center.
The specific implementation steps comprise:
(1) checking the drainage capacity of the existing rainwater (drainage) pipe network according to urban inland inundation prevention and control standards, and determining drainage flow additionally needing to be promoted;
(2) selecting an inspection well of a rainwater (drainage) pipeline to be modified as an embedded modification node according to site construction conditions;
(3) selecting a proper submersible pump according to the design parameter flow pressure, and performing simulation calculation on the short-time heavy rainfall working condition according to a hydraulic simulation method of a pressure flow gravity flow coupling pipe network, so that the equipment meets the operation requirements under different working conditions;
(4) a submersible pump, an exhaust fan, a water quality sensor, a water level sensor, a well cover opening and closing sensor and an internal environment air quality sensor are installed in an inspection well on site and connected to an intelligent drainage node controller;
(5) the water outlet pipeline of the submersible pump is connected out of the side wall of the inspection well, connected with the check valve and connected into a special rainwater shallow layer surface pressure pipeline, a groove is formed in a proper position of a road, a rainwater shallow layer surface pressure pipeline is buried in the groove, a pipeline outlet is connected into a river channel according to actual requirements, and rainwater treatment and recycling facilities or sewage pipelines are arranged.
The method of the invention has the advantages of minimal damage to the existing drainage facilities and other underground pipelines and stronger maneuvering flexibility for scheduling. Because the time lag exists in the middle from the rainfall process with strong randomness to the formation of surface runoff and then to the pipeline flowing process of the underground rainwater drainage pipeline, and the time lag is influenced by the urban underlying surface and urban surface structures and other ground characteristics, the change process of the water level and the flow in the pipeline is complex in the running process of the rainwater drainage pipeline, the technical scheme fully considers the actual running characteristics, carries out accurate control and scheduling in the running process and utilizes the regulation and discharge capacity of the existing municipal rainwater drainage pipeline network to the maximum extent, thereby maximizing the utilization efficiency of the pipeline upgrading and reconstruction investment funds;
(4) the retrieved patent technical scheme does not have the controllability to early rainfall pollution, and the early rainfall is regulated and stored by the regulation and storage pond according to the retrieved patent technical scheme, because quality of water is relatively poor, silt deposits easily to the bottom and leads to the emptying pipe of bottom to block up, pollutes the rainwater quality in later stage easily moreover, considers that early rainfall quality of water is relatively poor in this patent application, leads to the terminal black and odorous problem of receiving the water, has increased and has dispatched and handled the measure according to the quality of water of the incoming water.
In conclusion, the invention implements embedded modification on the existing rainwater (drainage) pipe network, and intelligently adjusts the operation parameters according to the actual operation working conditions of the pipe network in the operation process, thereby improving the capability of the rainwater (drainage) pipe network in coping with complex working conditions; in the process of upgrading and transforming the rainwater pipe network, the state of the existing rainwater (drainage) pipe network is monitored, and dynamic operation parameters are provided for remotely acquiring the state of the existing drainage pipe network; the internal state of the inspection well can be remotely controlled according to actual needs; the invention implements an accurate node transformation technology on the existing rainwater (drainage) pipe network inspection well, an intelligent rainwater (drainage) pipe network node controller is arranged in the inspection well, the real-time monitoring and the remote transmission are implemented on the running state of the existing pipeline, meanwhile, the automatic judgment and identification are carried out according to the health state (water level, water quality and internal air environment quality) of the pipeline, and the relevant equipment (an exhaust fan and a water pump) is automatically operated according to the requirement to improve the running state and the performance of the existing rainwater (drainage) pipe network.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a drainage system of double-deck coupled structure, includes a plurality of rainwater inspection shaft, a plurality of rainwater inspection shaft is linked together through rainwater drainage line, be provided with immersible pump, its characterized in that in the rainwater inspection shaft: a rainwater pressure pipeline is arranged on a shallow layer of the road surface above the outside of the rainwater inspection well, and a water outlet pipeline of the submersible pump is connected into the rainwater pressure pipeline through a check valve, so that a double-layer drainage system coupled with the existing municipal rainwater drainage pipeline is formed.
2. The drainage system of a double-deck coupling structure according to claim 1, wherein: the outlet of the rainwater pressure pipeline is connected to a river channel according to actual needs for direct discharge, or connected to a rainwater pollution rapid treatment and recycling facility for treatment and recycling, or connected to a sewage pipeline and sent to a sewage treatment plant for unified treatment and discharge.
3. The drainage system of a double-deck coupling structure according to claim 1, wherein: still be provided with sensor, controller in the rainwater inspection shaft, the sensor includes level sensor, water quality sensor, well lid state monitoring sensor, inside air quality detection sensor that opens and shuts, will the sensor with the state monitoring input of controller links to each other, the power input control end of immersible pump links to each other with the switching value output of controller, install wireless data transmission RTU outside the inspection shaft, the signal output part of wireless data transmission RTU and controller links to each other.
4. A drainage system of a double-deck coupling structure according to claim 3, wherein: the controller adopts embedded microprocessor ARM as central processing unit, the controller has sensor signal acquisition input end, switching value output end, data wireless transmission output end, inside data state storage module, the input signal of sensor signal acquisition input end includes analog quantity and switching value, the power control end of switching value output connection immersible pump.
5. A drainage method of a double-layer coupling structure is characterized in that: the double-layer drainage systems are switched through an intelligent rainwater node controller, and the working modes comprise an in-situ autonomous intelligent judgment mode and a remote manual intervention mode; the intelligent in-situ automatic judgment is set according to operation needs, the adopted parameters comprise water level, water level change rate and water quality in the rainwater drainage inspection well, and the remote manual intervention mode is used for meeting the daily pipeline maintenance needs and the forced operation needs in an emergency state.
6. The drainage method of a double-layer coupling structure according to claim 5, wherein: adopting rainwater to carry out back flush on the pressure pipeline, comprising two back flush modes: (a) starting a water pump in the diving well for backwashing in a remote manual intervention mode; (b) and in an automatic backwashing mode, after the controller sets a preset time interval for continuous work, the pump closing time is delayed for backwashing.
7. The drainage method of a double-layer coupling structure according to claim 5, wherein: the equipment model selection parameters of the submersible pump comprise lift and flow; the flow parameter is selected based on the maximum flow capacity of an upstream rainwater inflow pipeline in the inspection well and a waterlogging prevention design flow difference value specified in 'urban waterlogging prevention and control technical specification', and meanwhile, the operation load is equally divided; and selecting local design rainfall type based on urban waterlogging prevention and control standards according to the lift parameters, and establishing a state model of constant flow and non-constant flow of the hydraulic power of the pipe network.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113431158A (en) * | 2021-05-31 | 2021-09-24 | 陕西四季春清洁热源股份有限公司 | Dry-type pollution-free drainage system between intermediate-depth buried pipe geothermal energy equipment rooms |
| CN114031244A (en) * | 2021-11-19 | 2022-02-11 | 九江精密测试技术研究所 | Novel distribution of rain and sewage processing system |
| CN114593958A (en) * | 2022-05-07 | 2022-06-07 | 奥来国信（北京）检测技术有限责任公司 | Continuous intermittent sampling and sample reserving device in remote control sewage inspection well |
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