CN118160610B - Urban overpass unpowered rainwater intelligent sprinkling irrigation greening compensation system - Google Patents
Urban overpass unpowered rainwater intelligent sprinkling irrigation greening compensation systemInfo
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- CN118160610B CN118160610B CN202410507439.7A CN202410507439A CN118160610B CN 118160610 B CN118160610 B CN 118160610B CN 202410507439 A CN202410507439 A CN 202410507439A CN 118160610 B CN118160610 B CN 118160610B
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- rainwater
- sedimentation tank
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
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Abstract
本发明涉及城市立交桥桥面雨水利用技术领域，公开了一种城市立交桥无动力雨水智慧喷灌绿化补偿系统，包括：中心控制器、雨水收集沉淀池、喷淋系统及喷洒系统；雨水收集沉淀池与桥面雨水排放管连通，雨水收集沉淀池上连接有沉淀池出水管；喷淋系统与喷洒系统均连接在沉淀池出水管上，喷淋系统的喷淋头与喷洒系统的喷洒头均设置在绿化带的上方。本发明的系统利用立交桥桥面雨水对绿化带植物进行喷灌和对路面、空气进行降尘，不仅可以充分利用降雨雨水，节约市政用水，而且利用雨水的重力势能实现无动力自动喷灌；此外，由于该系统在立交桥桥面收集了部分带泥沙的雨水，减少了流入市政管网中的泥沙量，减轻了市政雨水管网清淤压力。
This invention relates to the field of rainwater utilization technology for urban overpasses, and discloses a non-powered intelligent sprinkler irrigation and greening compensation system for urban overpasses. The system includes: a central controller, a rainwater collection and sedimentation tank, a sprinkler system, and a spraying system. The rainwater collection and sedimentation tank is connected to the rainwater discharge pipe on the bridge surface, and a sedimentation tank outlet pipe is connected to the rainwater collection and sedimentation tank. Both the sprinkler system and the spraying system are connected to the sedimentation tank outlet pipe, and the sprinkler heads of both systems are positioned above the green belt. This system utilizes rainwater from the overpass surface to irrigate plants in the green belt and to reduce dust on the road surface and in the air. It not only makes full use of rainwater, saving municipal water, but also utilizes the gravitational potential energy of rainwater to achieve non-powered automatic sprinkler irrigation. Furthermore, because the system collects some rainwater containing sediment from the overpass surface, it reduces the amount of sediment flowing into the municipal pipe network, alleviating the pressure on municipal rainwater pipe network dredging.
Description
Technical Field
The invention relates to the technical field of urban overpass bridge deck rainwater utilization, in particular to an unpowered rainwater intelligent sprinkling irrigation greening compensation system for an urban overpass.
Background
The water resources of China are seriously deficient, the water resource quantity of people per minute of China is 2055m 3, only 25% of the global average level is one of the countries with the most scarce water resources of 13 people per minute, and along with the acceleration of the industrialization process, the pollutant emission is increased, and the method has great significance for recycling fresh water resources in cities.
Most of the rainwater is discharged to the river through a sewer pipe and then converged to the sea, and part of the water resources are not fully utilized, for example, most of the rainwater runoff formed on the bridge deck of the urban overpass is discharged into a municipal pipe network directly through a bridge deck rainwater drain pipe and finally enters a sewage plant for treatment or is discharged into a river channel, but the green belt below the overpass is blocked and can not be drenched by the rainwater, and even the green belt below the overpass needs to be drenched by water independently in a rainy day, so that the contradiction phenomenon that the rainwater cannot be utilized and additional municipal water is needed is formed. In addition, after the rainwater on the overpass bridge deck flows into municipal pipe network, then probably can cause municipal pipe network rainwater overflow, forms ponding flood on the road surface, influences urban traffic and resident normal life, and excessive rainwater gets into municipal pipe can increase municipal pipe network operating pressure and sewage plant's treatment pressure, makes the overload operation of sewage plant, finally leads to the emission of sewage not up to standard, makes more water resources contaminated.
Disclosure of Invention
The invention provides an intelligent rainwater sprinkling irrigation greening compensation system for an urban overpass, which solves the problems that the rainwater on the bridge deck of the overpass can not be utilized and the greenbelt under the bridge needs to be irrigated with additional water.
An intelligent rainwater sprinkling irrigation greening compensation system for an urban overpass comprises a central controller, a rainwater collecting and settling pond arranged on a pier, a sprinkling system and a sprinkling system, wherein the sprinkling system and the sprinkling system are communicated with the rainwater collecting and settling pond;
The lower side wall of the rainwater collecting sedimentation tank is provided with a sedimentation tank water outlet, the sedimentation tank water outlet is connected with a sedimentation tank water outlet pipe through a first right-angle elbow, the sedimentation tank water outlet pipe is arranged along the vertical direction of the bridge pier, and the inner side of the sedimentation tank water outlet is provided with a two-phase separator;
The spraying system and the spraying system are both connected to the water outlet pipe of the sedimentation tank, the spraying system is positioned at the upper part of the spraying system, and the spraying head of the spraying system are both arranged above the green belt;
And a filter assembly is arranged outside the water inlet of the sedimentation tank and is connected with a bridge deck rainwater drainage pipe.
The sprinkling irrigation greening compensation system has the advantages that the sprinkling irrigation greening compensation system collects rainwater on the bridge deck of the overpass and is used for sprinkling irrigation on the green belt under the bridge after filtering and precipitation, rainwater can be fully utilized, municipal water can be reduced, urban flood probability can be reduced when the rainfall is large, municipal pipe network operation pressure and treatment pressure of a sewage plant are reduced, and because a certain height difference exists between a rainwater collecting sedimentation tank and a sprinkling system, sprinkling irrigation can be realized by utilizing water pressure, additional power participation is not needed, energy conservation and emission reduction are realized. In addition, the rainwater collecting and settling pond with the conical bottom can concentrate sediment such as sediment on the conical bottom surface, quicken the sediment deposition rate of the sediment and is convenient for concentration, thereby being beneficial to dredging and flushing, and the two-phase separator is arranged at the water outlet of the settling pond and is used for separating the sediment from the rainwater, thereby reducing the sediment quantity entering the spraying system and the spraying system.
Further, the filter component comprises a filter plate, a filter plate enclosing block and a impurity discharging pipe, wherein the filter plate is obliquely arranged inside the filter plate enclosing block and above a water inlet of the sedimentation tank, and the impurity discharging pipe is communicated with the inside of the filter plate enclosing block and is positioned at the lower part of the filter plate enclosing block.
The technical scheme has the advantages that the filter plate is used for intercepting garbage sundries such as leaves and stones carried by rainwater in the bridge deck rainwater collecting pipe, sundries are prevented from entering the rainwater collecting and depositing tank to influence the normal operation of the rainwater collecting and depositing tank, the filter plate enclosure is used for sealing and protecting the filter plate, an installation position is provided for the filter plate, meanwhile, the phenomenon that hard sundries such as stones splash on the filter plate to cause high-altitude falling is prevented, the impurity discharging pipe is connected below the filter plate enclosure, and sundries fall into the impurity discharging pipe from the chute of the filter plate enclosure to be uniformly collected.
Further, an overflow groove is arranged in the rainwater collecting and settling tank, an overflow water outlet penetrating through the inner wall and the outer wall is arranged on the vertical side wall of the rainwater collecting and settling tank, a triangular weir is arranged at the overflow groove, the triangular weir and the overflow groove are positioned on one side far away from the water inlet of the settling tank, and a mud guard is further arranged on the triangular weir.
The technical scheme has the advantages that the overflow groove is arranged on the rainwater collecting and settling tank, redundant rainwater can be discharged, the rainwater collecting and settling tank is prevented from being overweight, the overflow water flow can be more uniform by arranging the triangular weir at the overflow groove, the water flow direction and speed of the rainwater entering the overflow groove are changed, and the mud guard on the triangular weir is used for reducing the floating of sediment in the tank, so that the sediment quantity entering the overflow water outlet is reduced.
Further, the overflow water outlet is connected with an overflow water outlet pipe, and the overflow water outlet pipe is communicated with a ground road rain inlet.
Further, the bottom of the rainwater collecting and settling tank is provided with a settling tank mud discharging port, the settling tank mud discharging port is connected with a settling tank mud discharging pipe through a second right-angle elbow, a second electromagnetic valve and a water turbidity detector are arranged on the settling tank mud discharging pipe, and the second electromagnetic valve and the water turbidity detector are respectively in communication connection with the central controller.
The technical scheme has the advantages that the turbidity of water in the mud pipe can be detected through the water turbidity detector, then data are fed back to the central controller, and the central controller instructs the second electromagnetic valve to close when water flow changes clear, so that sediment in the rainwater collecting and settling pond can be drained completely, and the waste of the collected rainwater is avoided.
Further, the spray header is connected on the sprinkler system inlet tube, and the sprinkler head is connected on the sprinkler system inlet tube, all is provided with first solenoid valve on sprinkler system inlet tube and the sprinkler system inlet tube, first solenoid valve and central controller communication connection.
The technical scheme has the beneficial effects that the first electromagnetic valve can control the on-off of water flow and the water flow of the water inlet pipe, so that the water can be used adaptively according to the water storage capacity of the rainwater collecting and precipitating tank, and water resources are saved.
Further, the water inlet pipe of the spraying system and the water inlet pipe of the spraying system are communicated with the water outlet pipe of the sedimentation tank through tee joints.
Further, an infrared liquid level meter is arranged on the rainwater collecting and precipitating tank and is in communication connection with the central controller.
The technical scheme has the beneficial effects that the water level in the rainwater collecting and settling tank can be detected in real time through the infrared liquid level meter, and basis and reference are provided for decision instructions to be made by the central controller.
Further, a drop plate is arranged on the inner side of the water inlet of the sedimentation tank.
The technical scheme has the beneficial effects that the drop plate is used for changing the water flow direction of rainwater entering the rainwater collecting and precipitating tank and reducing the water flow speed, reducing the disturbance of the rainwater to water in the rainwater collecting and precipitating tank and improving the sediment precipitating efficiency.
Further, the top of the rainwater collecting sedimentation tank is provided with a switchable sedimentation tank cover plate.
The technical scheme has the beneficial effects that the sedimentation tank cover plate is arranged at the top of the rainwater collection sedimentation tank, so that personnel can conveniently enter the sedimentation tank to carry out maintenance inspection and dredging operation, and the normal use of the rainwater collection sedimentation tank is ensured.
The invention has the following beneficial effects:
(1) The system of the invention uses the rain water on the bridge deck of the overpass to spray the plants on the green belt, thereby not only fully utilizing the rain water and saving municipal water, but also being capable of falling dust on roads.
(2) The system collects part of rainwater with silt and sundries on the ground, the rainwater amount directly entering the municipal rainwater pipe network is reduced, the silt amount flowing into the municipal rainwater pipe network is reduced, the pressure and dredging pressure of the municipal rainwater pipe network are reduced, the initial rainwater treatment load of a sewage treatment plant is reduced, meanwhile, the ground rainwater runoff amount and the municipal pipe network rainwater amount are reduced in rainy seasons, the occurrence probability of urban flood can be reduced to a certain extent, and the effect of a sponge city is deeply exerted.
(3) The rainwater collecting and settling tank, the spraying system and the spraying system of the system have height difference, the discharged rainwater can be atomized by utilizing gravitational potential energy of the rainwater accumulated in the tank, the collected rainwater is fully utilized, and unpowered automatic spray irrigation is realized.
(4) The system of the invention realizes automatic sprinkling irrigation while saving water resources by arranging components such as the first electromagnetic valve, the second electromagnetic valve, the water turbidity detector, the infrared ray liquid level meter and the like, and the components work in a linkage way.
(5) The system of the invention is provided with the filtering component, is used for reducing sundries entering the rainwater collecting and precipitating tank, avoids the blockage of a spraying system and a spraying system, and can ensure that the whole system continuously operates.
(6) According to the rainwater collecting and settling tank, the water drop plate is arranged at the water inlet of the settling tank, the direction of water flow entering the tank is changed, the flow speed is reduced, the disturbance to rainwater in the tank is reduced, sediment in water in the tank is accelerated, the mud guard is arranged at the overflow water outlet, sediment in the tank is turned up, so that the sediment amount entering a municipal pipe network is reduced, meanwhile, the two-phase separator is arranged at the water outlet of the settling tank, sediment and rainwater are separated, sediment is prevented from entering a spraying system and a sprinkling system, and sustainable operation of the system is guaranteed.
Drawings
FIG. 1 is a schematic diagram of a schematic cross-sectional front view of a sprinkler irrigation compensation system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a front view of a compensation system for sprinkling irrigation greening according to an embodiment of the present invention;
FIG. 3 is a schematic top cross-sectional view of a sprinkler irrigation compensation system according to an embodiment of the present invention;
FIG. 4 is a schematic side cross-sectional view of a sprinkler irrigation greening compensation system according to an embodiment of the invention;
FIG. 5 is a schematic top view of a multi-row plumbing arrangement of a spray system in an embodiment of the present invention;
FIG. 6 is a top view of the positional relationship between a filter plate and a filter plate enclosure in an embodiment of the invention;
FIG. 7 is a schematic front cross-sectional view of the positional relationship between a filter panel and a filter panel enclosure in an embodiment of the invention;
Fig. 8 is a schematic side cross-sectional view of the positional relationship between a filter plate and a filter plate enclosure in an embodiment of the invention.
The device comprises a bridge pier 1, a rainwater collecting and settling tank 2, a bridge deck rainwater discharge pipe 3, a settling tank water inlet 4, a settling tank cover plate 5, a overflow tank 6, a triangular weir 7, an overflow water outlet 8, an overflow water outlet 9, a settling tank water outlet 10, a settling tank water outlet 11, a first right-angle elbow 12, a first electromagnetic valve 13, a spraying system water inlet pipe 14, a spraying head 15, a spraying system water inlet pipe 16, a spraying head 17, a settling tank mud discharge opening 18, a settling tank mud discharge pipe 19, a second right-angle elbow 20, a second electromagnetic valve 21, a third-angle joint 22, a filter plate 23, a filter plate 24, a 25-trash discharge pipe 26-two-phase separator 27, a mud baffle plate 28-drop plate.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Referring to fig. 1 to 4, the invention provides an urban overpass unpowered rainwater intelligent sprinkling irrigation greening compensation system, which comprises a rainwater collecting sedimentation tank 2 arranged on a bridge pier 1, a sprinkling system and a sprinkling system communicated with the rainwater collecting sedimentation tank 2, a filtering component arranged above the rainwater collecting sedimentation tank 2 and a central controller.
The rainwater collecting and depositing tank 2 is used for collecting and storing rainwater and depositing impurities such as sediment in the rainwater. The rainwater collecting and settling pond 2 is arranged on the bridge pier 1 of the overpass and is far higher than the ground, so that the rainwater in the overpass has larger gravitational potential energy. The rainwater collecting and settling tank 2 can be in a box shape or a cylinder shape, can be made of high-strength synthetic plastic or can be formed by pouring concrete, and is exemplified by a rectangular box-shaped structure, the bottom of the rainwater collecting and settling tank 2 is arranged on a bracket, the bracket is fixed on the bridge pier 1 through expansion screws, and the bracket is formed by welding angle steel.
The top of the rainwater collection sedimentation tank 2 is provided with a sedimentation tank water inlet 4, the sedimentation tank water inlet 4 is communicated with a bridge deck rainwater discharge pipe 3 or is connected with a bridge deck rainwater inlet through a bridge deck rainwater collecting pipe, and rainwater runoffs collected on the bridge deck of the overpass are discharged into the rainwater collection sedimentation tank 2. The bridge deck rainwater collecting pipe is made of PVC or HDPE materials, and the pipe diameter and the length of the bridge deck rainwater collecting pipe and the size of the rainwater collecting sedimentation tank 2 are comprehensively determined according to the rainfall intensity, the bridge deck catchment area, the bridge deck runoff of the overpass and other coefficients of the place.
The top of the rainwater collection sedimentation tank 2 is provided with a switchable sedimentation tank cover plate 5, the sedimentation tank cover plate 5 is generally made of synthetic plastics or stainless steel and is connected with the rainwater collection sedimentation tank 2 through a hinge or a hinged support, and when the rainwater collection sedimentation tank 5 needs to be overhauled or dredged, the sedimentation tank cover plate 5 can be opened, and workers can enter the rainwater collection sedimentation tank to operate.
In order to prevent debris such as stone from entering into rainwater collection sedimentation tank 2, be provided with filter assembly outside sedimentation tank water inlet 4, filter assembly is connected with bridge floor rainwater drainage pipe 3 or bridge floor rainwater collecting pipe. The filter assembly may use a flexible filter screen or a rigid filter plate.
As an example, referring to fig. 6 to 8, the filter assembly includes a filter plate 23, a filter plate fence 24, and a trash discharge pipe 25. The filter plate 23 is formed by welding a plurality of round steel bars in parallel, gaps are reserved between adjacent round steel bars, rainwater can pass through conveniently to filter out sundries, the filter plate 23 is obliquely arranged inside the filter plate enclosure 24, and when the sundries strike on the filter plate 23, the sundries slide down into the chute below the filter plate enclosure 24 due to the oblique arrangement of the filter plate 23. The filter plate encloses fender 24 upper portion and is detachable roof, the installation of being convenient for and changing filter 23, roof and bridge floor rainwater discharge pipe 3 or bridge floor rainwater collecting pipe connection, and filter 23 are located bridge floor rainwater discharge pipe 3 or bridge floor rainwater collecting pipe's below, and filter 23 is located sedimentation tank water inlet 4's top simultaneously, and filter plate encloses fender 24 and can also prevent hard thing such as stone and splashes after the collision on filter 23, avoids causing the high altitude to weigh down the thing. The bottom of the chute of the filter plate enclosure 24 is communicated with the impurity discharging pipe 25, the impurity discharging pipe 25 is positioned at the lower part of the filter plate enclosure 24 and used for guiding and collecting impurities in the filter plate enclosure 24, a stainless steel dustbin with holes is arranged below the impurity discharging pipe 25 for conveniently and uniformly collecting the impurities, the height of the outlet end of the impurity discharging pipe 25 from the ground is about one meter, the outlet end of the impurity discharging pipe 25 can be blocked, and the impurities can be uniformly discharged when a garbage recycling vehicle passes through. Through setting up filter component outside sedimentation tank water inlet 4, can reduce effectively and get into debris in the rainwater collection sedimentation tank 2, guarantee that rainwater collection sedimentation tank 2 normal use.
Referring to fig. 4 again, the inside of sedimentation tank water inlet 4 is provided with drop board 28, drop board 28 is two rectangular boards that incline opposite direction and have overlap portion in vertical direction, connect respectively on the vertical lateral wall of rainwater collection sedimentation tank 2 and top cap below, need first two drop boards 28 when the rainwater in bridge floor rainwater discharge pipe 3 or bridge floor rainwater collecting pipe is discharged to rainwater collection sedimentation tank 2, drop board 28 has reduced the velocity of flow of rivers and has changed the direction of rivers, the disturbance of rivers to rainwater collection sedimentation tank 2 has been reduced, the disturbance to the rainwater in the pond has been reduced, the sedimentation efficiency of silt in the rainwater in the pond has been accelerated, the life of rainwater collection sedimentation tank 2 has been improved to a certain extent simultaneously.
The bottom of the rainwater collection sedimentation tank 2 is provided with a sedimentation tank mud discharging port 18, the sedimentation tank mud discharging port 18 is inserted with a second right-angle elbow pipe 20, the second right-angle elbow pipe 20 is connected with a sedimentation tank mud discharging pipe 19, and the sedimentation tank mud discharging pipe 19 is provided with a second electromagnetic valve 21. When the rainwater in the rainwater collecting and settling tank 2 is settled, water-insoluble suspended matters such as sediment are discharged from the settling tank mud discharging pipe 19, the settling tank mud discharging pipe 19 is made of PVC or HDPE materials, and the pipe diameter of the settling tank mud discharging pipe is determined according to the size of the rainwater collecting and settling tank 2. The sediment time of sedimentation tank 2 can be gone on simultaneously with municipal vatch basin, municipal sewage well, municipal pipeline's desilting, and the second solenoid valve 21 of installation on sedimentation tank mud pipe 19 opens second solenoid valve 21 when the mud is discharged, utilizes municipal desilting vehicle to collect the sediment suction of sedimentation tank 2 bottom through sedimentation tank mud pipe 19, takes the clarity of sedimentation tank mud pipe 19 play water as the time of the mud.
Preferably, a water turbidity detector is arranged on the sedimentation tank mud discharging pipe 19 and is in communication connection with the central controller, and is used for detecting whether sediment at the bottom of the rainwater collecting sedimentation tank 2 is discharged completely or not, and when the turbidity of the effluent becomes low, mud discharging is stopped, so that excessive loss of collected rainwater is avoided.
The rainwater collection sedimentation tank 2 is used as ground facilities, the sludge removal difficulty is far less than that of an underground municipal pipe network, a part of rainwater with silt is precipitated on the ground, so that the amount of silt entering the municipal rainwater pipe network is reduced, the purpose of reducing the dredging pressure of the municipal rainwater pipe network is achieved, the sludge removal of the rainwater collection sedimentation tank 2 and the dredging of the municipal pipe network are synchronously carried out, manual work and mechanical treatment are not required to be independently arranged, and the purpose of low-cost sludge removal of the rainwater collection sedimentation tank 2 is achieved.
Preferably, the bottom of the rainwater collecting and settling tank 2 is arranged into a cone shape, sundries such as sediment in rainwater in the tank are settled under the action of gravity, and the tank bottom of the cone-shaped structure can collect the sundries together, so that sediment settling speed and sediment discharge efficiency are accelerated.
The inside of rainwater collection sedimentation tank 2 is provided with overflow launder 6, and overflow launder 6 laminating rainwater collection sedimentation tank 2's upper portion pool wall and along the design of pond long direction, overflow launder 6 length is the same with the pond length, and width and degree of depth are according to the size decision of rainwater collection sedimentation tank 2, and overflow launder 6 and rainwater collection sedimentation tank 2 can be designed into integral type structure, adopt and rainwater collection sedimentation tank 2 the same material to make, and its position staggers with sedimentation tank water inlet 4's position, avoids the rainwater directly to discharge from overflow launder 6. The triangular weir 7 is arranged at the overflow trough 6, the triangular weir 7 can make overflow in the pool uniform, change the water flowing direction and speed of rainwater entering the overflow trough 7, and the triangular weir 7 can intercept floating sundries to be carried out in the overflow trough 6, wherein the triangular weir 7 is a plate with saw teeth at the top end. The vertical side wall of the rainwater collecting and settling tank 2 is provided with an overflow water outlet 8 which penetrates through the inner wall and the outer wall, the overflow water outlet 8 is positioned at the tail end of the overflow groove 6, the overflow water outlet 8 is connected with an overflow water outlet pipe 9, the overflow water outlet pipe 9 is communicated with a ground road water inlet, when the water quantity entering the rainwater collecting and settling tank 2 exceeds the maximum water storage quantity, redundant rainwater enters a municipal rainwater pipe network along the overflow water outlet pipe 9 through the overflow groove 6, so that the excessive rainwater is discharged, and the normal use of the rainwater collecting and settling tank 2 is ensured.
Preferably, a mud guard 27 is arranged on the triangular weir 7, and the mud guard 27 can reduce the floating of mud and sand, reduce the amount of mud and sand entering the overflow water outlet pipe 9, and further reduce the amount of mud and sand entering the municipal rainwater pipe network.
A sedimentation tank water outlet 10 is formed in the side wall of the lower part of the rainwater collecting sedimentation tank 2, the sedimentation tank water outlet 10 is connected with a sedimentation tank water outlet pipe 11 through a first right-angle elbow pipe 12, and the sedimentation tank water outlet pipe 11 is arranged along the vertical direction of the pier 1. As an example, the distance between the water outlet 10 of the sedimentation tank and the bottom of the tank is one fourth of the height of the tank, so that not only can enough clear rainwater be used, but also sediment at the bottom of the tank can not enter the water outlet pipe 11 of the sedimentation tank.
In order to avoid the blockage of the spraying system and the spraying system by sediment, a two-phase separator 26 is arranged on the inner side of the water outlet 10 of the sedimentation tank to separate rainwater and sediment, so that the sediment content entering the spraying system/the spraying system is reduced, and the normal operation of the whole system is ensured.
The spraying system and the spraying system are both connected to the sedimentation tank water outlet pipe 11, and the spraying system is positioned at the upper part of the spraying system, and the spraying system water inlet pipe 14 and the spraying system water inlet pipe 16 are both communicated with the sedimentation tank water outlet pipe 11 through a three-way joint 22. The shower system inlet pipe 14 is evenly distributed with the shower head 15, the shower system inlet pipe 16 is evenly distributed with the shower head 17, the shower head 15 of the shower system and the shower head 17 of the shower system are all arranged above the green belt, rainwater entering the shower system/the shower system is sprayed out through the shower head 15/the shower head 17, because the shower system/the shower system and the rainwater collecting sedimentation tank 2 have a certain height difference, the generated pressure can lead the rainwater to be sprayed out in an atomized manner from the shower head 15/the shower head 17, the plant of the shower green belt is sprayed, dust fall treatment is carried out on the road surface and the air, and the whole sprinkling irrigation process is unpowered and automatic.
The spraying system water inlet pipe 14 and the spraying system water inlet pipe 16 are respectively provided with a first electromagnetic valve 13, the first electromagnetic valves 13 are connected with street lamps around an overpass or other similar municipal wires by wires, the circulation of rainwater in the spraying system water inlet pipe 14 and the spraying system water inlet pipe 16 can be automatically controlled through the first electromagnetic valves 13, the flow of the rainwater in the pipes is controlled through the first electromagnetic valves 13 by a time controller, the spraying time of the spraying system and the spraying time of the spraying system are further controlled, and the specific spraying and spraying time and interval can be designed according to the local climatic conditions and the size of the rainwater collecting sedimentation tank 2.
Referring to fig. 5, the water inlet pipe 14 of the spraying system is arranged in parallel with the ground, the specific height of the water inlet pipe 14 of the spraying system from the ground is determined according to the specific geographical condition under the overpass, and the height of the water inlet pipe is not too high, otherwise, the water outlet pressure of the rainwater collecting and settling tank 2 is not enough to support the spraying atomization effect, and is not too low, otherwise, the dust settling effect of the spraying atomization on the road surface and the air is poor. The spray system inlet pipe 14 is made of PVC or HDPE material, and the pipe diameter of the spray system inlet pipe is matched with the pipe diameter of the sedimentation tank outlet pipe 11. The number and length of the water inlet pipes 14 of the spraying system are determined according to the greening area under the overpass and the width of the road surface, if the greening belt and the road surface are large, a plurality of spraying pipelines are arranged in parallel to spray the greening belt and dust fall the road surface and air, and if the greening belt and the road surface are long, the water inlet pipes can be connected with the spraying systems of the adjacent rainwater collecting sedimentation tanks 2 into a whole to keep the stability of the spraying pipelines.
Likewise, the water inlet pipe 16 of the spraying system is arranged in parallel along the ground, the specific height of the water inlet pipe 16 of the spraying system from the ground is determined according to the specific geographical condition under the overpass, and the height of the water inlet pipe cannot be too high, otherwise, the passing of passers-by is influenced, and also cannot be too low, otherwise, the spraying head 17 is easy to be blocked by ground mud ash. The pipe diameter of the water inlet pipe 16 of the spraying system is determined according to the size and greening area of the water outlet pipe 11 of the sedimentation tank. The number and the length of the water inlet pipes 14 of the spraying system are determined according to the greening area under the overpass, if the area of the greening belt is large, a plurality of spraying pipelines are arranged in parallel to spray greening, if the length of the greening belt is long, the water inlet pipes can be connected with the spraying systems of the adjacent rainwater collecting and settling tanks 2 to form a whole, and if the spraying pipelines are long, the ground support is installed to maintain the stability of the pipelines.
By way of example, the sedimentation tank outlet pipe 11 is connected to the shower system inlet pipe 14 at two meters from the ground by means of a three-way connection 22. The sedimentation tank outlet pipe 11 is connected with the spraying system inlet pipe 16 through another three-way joint 22 at the position twenty cm away from the ground, and the other port of the three-way joint 22 in the spraying system is blocked and used as a pipeline inspection port.
Preferably, an infrared liquid level meter is arranged at the top of the inner side of the rainwater collecting and settling tank 2, the liquid level meter respectively works in linkage with the first electromagnetic valve 13 and the second electromagnetic valve 21, water quantity information of the rainwater collecting and settling tank 2 measured by the liquid level meter is transmitted to a central controller, the central controller further controls the first electromagnetic valve 13 to spray out different water quantities according to different liquid levels in the rainwater collecting and settling tank 2, utilization efficiency of rainwater in the tank is improved, when sludge is required to be discharged in the tank, the central controller instructs the second electromagnetic valve 21 to open for sludge discharge, meanwhile, the central controller judges whether sediment is discharged through data dynamically detected in real time by a water turbidity detector, and after the sediment content in water reaches a preset standard, the central controller controls the second electromagnetic valve 21 to be closed.
The central controller adopts a programmable chip to carry out functional programming, is respectively in communication connection with the first electromagnetic valve 13, the second electromagnetic valve 21, the water turbidity detector and the infrared liquid level meter, and is used for receiving signals and data of the water turbidity detector and the infrared liquid level meter, judging the signals and the data and then giving proper instructions to the first electromagnetic valve 13 and the second electromagnetic valve 21, the chip type used by the central controller can be STM32 series, and the transmission line of the central controller is connected with street lamps around an overpass or similar municipal wires.
According to the sprinkling irrigation greening compensation system, the runoff of the bridge deck of the overpass is collected and is guided to be discharged into the rainwater collecting and precipitating tank 2 after being filtered, after the rainwater collecting and precipitating tank 2 is full of rainwater, excessive rainwater enters the overflow water outlet pipe 9 through the overflow groove 6 arranged at the upper part, the overflow water outlet pipe 9 is connected with a ground rainwater inlet, and the rainwater overflowed from the rainwater collecting and precipitating tank 2 finally flows into a municipal rainwater pipe network. After preliminary precipitation, the rainwater collected in the rainwater collecting and precipitating tank 2 flows out from the water outlet pipe 11 of the precipitating tank, the water outlet pipe 11 of the precipitating tank is connected with the water inlet pipe 14/16 of the spraying system through a tee joint, and the rainwater with a certain pressure is atomized and sprayed out from the spray head 15 and the spray head 17 to irrigate plants in the green belt and carry out dust fall treatment on the road surface and air. Sediment and sundries precipitated at the bottom of the rainwater collecting and precipitating tank 2 are periodically discharged from a sediment discharge pipe 19 of the precipitating tank.
The foregoing is merely a preferred embodiment of the invention, which is not representative of all possible forms of the invention, and the scope of the invention is not limited to such specific statements and embodiments. Various other modifications and improvements can be made in light of the teachings of the present disclosure without departing from the spirit and scope of the invention.
Claims (8)
1. The intelligent rainwater sprinkling irrigation greening compensation system for the urban overpass is characterized by comprising a central controller, a rainwater collecting and settling pond (2) arranged on a pier (1), a sprinkling system and a sprinkling system, wherein the sprinkling system and the sprinkling system are communicated with the rainwater collecting and settling pond (2);
The rainwater collecting and settling tank comprises a bridge deck rainwater drainage pipe, a rainwater collecting and settling tank (2), a settling tank water inlet (4), a settling tank water outlet (10), a settling tank water outlet pipe (11) and a two-phase separator (26), wherein the settling tank water inlet (4) is formed in the upper portion of the rainwater collecting and settling tank (2), the settling tank water inlet (4) is communicated with the bridge deck rainwater drainage pipe (3), the settling tank water outlet (10) is formed in the side wall of the lower portion of the rainwater collecting and settling tank (2), the settling tank water outlet (10) is connected with the settling tank water outlet pipe (11) through a first right-angle elbow pipe (12), the settling tank water outlet pipe (11) is arranged along the vertical direction of the bridge deck (1), and the two-phase separator (26) is arranged on the inner side of the settling tank water outlet (10), and the bottom of the rainwater collecting and settling tank (2) is in a conical shape.
The spraying system and the spraying system are both connected to a water outlet pipe (11) of the sedimentation tank, the spraying system is positioned at the upper part of the spraying system, and a spraying head (15) of the spraying system and a spraying head (17) of the spraying system are both arranged above the green belt;
A filtering component is arranged outside the water inlet (4) of the sedimentation tank and is connected with a bridge deck rainwater drainage pipe (3);
The filtering assembly comprises a filtering plate (23), a filtering plate enclosing block (24) and a impurity discharging pipe (25), wherein the filtering plate (23) is obliquely arranged inside the filtering plate enclosing block (24) and is positioned above a water inlet (4) of the sedimentation tank, and the impurity discharging pipe (25) is communicated with the inside of the filtering plate enclosing block (24) and is positioned at the lower part of the filtering plate enclosing block (24);
the bottom of rainwater collection sedimentation tank (2) is provided with sedimentation tank mud discharging port (18), and sediment Chi Paini mouth (18) are connected with sedimentation tank mud discharging pipe (19) through second right angle return bend (20), be provided with second solenoid valve (21) and water turbidity detector on sedimentation tank mud discharging pipe (19), second solenoid valve (21) and water turbidity detector respectively with central controller communication connection.
2. The urban overpass unpowered intelligent rainwater sprinkling irrigation greening compensation system according to claim 1 is characterized in that an overflow groove (6) is arranged in the rainwater collecting sedimentation tank (2), an overflow water outlet (8) penetrating through the inner wall and the outer wall is arranged on the vertical side wall of the rainwater collecting sedimentation tank (2), a triangular weir (7) is arranged at the overflow groove (6), the triangular weir (7) and the overflow groove (6) are located on one side far away from the sedimentation tank water inlet (4), and a mud guard (27) is further arranged on the triangular weir (7).
3. The urban overpass unpowered rainwater intelligent spray irrigation greening compensation system according to claim 2, wherein the overflow water outlet (8) is connected with an overflow water outlet pipe (9), and the overflow water outlet pipe (9) is communicated with a ground road rainwater inlet.
4. The urban overpass unpowered rainwater intelligent spray irrigation greening compensation system according to claim 1, wherein the spray header (15) is connected to a spray system water inlet pipe (14), the spray header (17) is connected to a spray system water inlet pipe (16), first electromagnetic valves (13) are arranged on the spray system water inlet pipe (14) and the spray system water inlet pipe (16), and the first electromagnetic valves (13) are in communication connection with the central controller.
5. The urban overpass unpowered rainwater intelligent sprinkling irrigation greening compensation system according to claim 4 is characterized in that the sprinkling system water inlet pipe (14) and the sprinkling system water inlet pipe (16) are communicated with the sedimentation tank water outlet pipe (11) through tee joints (22).
6. The urban overpass unpowered rainwater intelligent spray irrigation greening compensation system according to claim 1, wherein an infrared liquid level meter is arranged on the rainwater collection sedimentation tank (2), and the infrared liquid level meter is in communication connection with a central controller.
7. The urban overpass unpowered rainwater intelligent spray irrigation greening compensation system according to any one of claims 1 to 6, wherein a drop plate (28) is arranged on the inner side of the sedimentation tank water inlet (4).
8. The urban overpass unpowered rainwater intelligent spray irrigation greening compensation system according to claim 7 is characterized in that a switchable sedimentation tank cover plate (5) is arranged at the top of the rainwater collection sedimentation tank (2).
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